Etabs Response Spectrum Analysis Scale Factor







For dynamic analysis time history method or response spectra method is used. 2 Methods on How to Scale Base Shear in ETABS ABOUT US Civilax based to server in Civil Engineering provides ETABS and SAP2000 Tutorials, Civil Engineering Spreadsheets, Civil Engineering e-books and Many more Civil Engineering Downloads. In general, the response spectra analysis procedure is based on the assumption that the dynamic response of a structural model can be approximated as a summation of the responses of the independent dynamic modes of the model. The analysis of the building is done by using equivalent static method and dynamic method. Lateral force method of analysis f. Combination of actions for member design i. 1 Response Spectrum Analysis in STAAD explanation Video; 2 Methodology; 3 STAAD utilizes the following procedure to generate the lateral seismic loads. , 2010, Practical Guidelines to Select and Scale Earthquake Records for Nonlinear Response History Analysis of Structures: U. I dont know what I am doing wrong but I cant have the Responce spectrum base Reaction table (as seen at your spreadsheet at the instructions tab) at my 2013 Etabs. Linear Dynamic Analysis (Response Spectrum Analysis) The design codes covered are American and Indian Standards with Introduction to European Standards. first run we apply with scale facctor = g = 9. Failure punching shears 2. Introduction The spectral analysis is widely used in the analysis of noise-like signals because it provides a frequency decomposition in harmonics the behaviour of which can be studied separately. For that reason, it has become more important than the pure statistical analysis of the surface elevation. To compare equivalent static analysis and response spectrum analysis method on flat slab for above parameters. Definirea materialelor Define – Material Properties. A concrete gravity dam model is prepared in STAAD-PRO to perform the time history analysis and response spectrum analysis and a comparison is done between both these methods. modal and response spectrum (is 18932002) analysis 0f r. Scale factor = 9,81 x 1 / 4,8 = 2,044. Have been searching throughout the whole “Choose tables” tree and cant find anything. 3 Required Indian Standard Codes IS 456:2000 As per clause 32, design for wall describes, design of horizontal shear in clause 32. The two-day course aims to equip the participants with the necessary technical expertise and software skills for seismic analysis and design of buildings with reference to Eurocode 8. A response spectrum is defined by giving a table of values of S at increasing values of frequency, ω, for increasing values of damping, ξ. BUILDING OF G+9 FLOORS IN RESPONSE SPECTRUM METHOD USING ETABS 2013 SOFTWARE. The results from the analysis obtained from both the methods are presented in tabular form and the results are compared using graphical form Keywords:ETABS-2013, SHEAR WALL, IS456-2000, IS1893-2002 1. There are three types of Analysis covered in this Tutorial Series. , base shear) you may want to include that in the scale factor specified for the response spectrum. E based software E TABS. , 2010, Practical Guidelines to Select and Scale Earthquake Records for Nonlinear Response History Analysis of Structures: U. The Response Spectrum option in PV Elite is a generic one (except for few codes). In that case you would input a scale factor equal to the product of the scale factor to convert the spectrum to the appropriate units and the scale factor to scale the response spectrum base shear to the appropriate level. Lateral force method of analysis f. Dynamics ETABS dynamic analysis capabilities include the calculation of vibration modes using Ritz or Eigen vectors, response-spectrum analysis, and time-history analysis for both linear and nonlinear. Response spectrum; Modify the model after making Construction sequence analysis in Etabs; Read the result - fix the scale factor - Fix the load Combinations. Here i will discuss the importance of parameters. 981 30 | P a g e CHAPTER- 4 Modeling and Analysis in ETABS ETABS 2013 is used for the seismic analysis of buildings by seismic coefficient method. We all know response spectrum method gives better result then equivalent static method. The accelerograph records three orthogonal components of ground acceleration. Es-sentially the program assumes the response spectrum functions are unitless (normalized) and that the scale factor converts them into the appropriate units. Instructional Material Complementing FEMA 451, Design Examples Seismic Load Analysis 9 - 17 1a, 1b) Stiffness (Soft Story) Irregularity Vertical Structural Irregularities Irregularity (1a) exists if stiffness of any story is less than 70% of the stiffness of the story above or less than 80% of the average stiffness of the three stories above. 4 of ASCE 7-10 for a linear analysis, “force response parameters shall be multiplied by I e / R ” and “Drift quantities shall be multiplied by C d / R. chosen in between 0 to 20 degree is taken. This is to convert the spectrum into required units and for the base shear to scale it to an appropriate level. Presentation on Response Spectrum Analysis as per Indian Code. The analysis revealed that three major factors, called reserved strength, ductility and redundancy affects the actual value of response modification factor and therefore they must be taken into consideration. based on the Conditional Spectrum; (2) response-spectrum matching; and (3) near-fault ground motions and fault-rupture directivity. Apply non-seismic loads to unstressed structure Select pushover direction and mode shape for. com Step 3: Define load case data Load type - Acceleration Load Name - U1(This is with respect to global axis) Function - THX Scale factor- If the values of time history function is given in the current units the scale factor is set to 1 otherwise. 1, Shilpa P. If the meshes on common edges of adjacent area objects do not match up, automated line constraints are generated along those edges. From the Main Menu. The analysis of absolute displacements of a building using linear response spectrum methods, taking into account indirectly the nonlinear behavior of structural elements by introducing the behavior factor, and the nonlinear static analysis using pushover procedure have been performed. Seismic Analysis of Prefabricated Structures using ETABS. Presumably, Midas simply combines the relevant results as the results of the combo is there right away. response spectrum examination, linear response history, nonlinear static proce-dure or non-linear response history analysis must be used [9]. 5 used in seismic load cases. ETABS issue, for analysis and design for building systems. After the analysis is run, the scale factor obtained by the ratio of average base shear of the structure due to time history load case to that of equivalent static force case in each direction of the model is calculated and by replacing the scale factor provided in time history analysis, the model is analyzed for the load cases again. Therefore, Response Spectrum Function must be defined, which includes the range of the natural periods obtained from the Eigenvalue analysis. 1 For 15 storey 5. ppt), PDF File (. Response spectrum analysis. 36, importance factor 1. Responses to all items were given on a scale including 0 (not at all), 1 (once a week or less), 2 (2–4 times a week), to 3 (5 or more times a week). with time interval of 0. Linear dynamic analysis can be performed by response spectrum method. The data output choices are considerably more conducive to lateral design in particular purpose software like ETabs. using nonlinear response history analysis (RHA) to demonstrate performance of structures. 81 m/sec this is not possible it means just to calebrate the results next time we we apply the exact scale factor = 9. Records for Nonlinear Response History Analysis of Structures By Erol Kalkan and Anil K. Pro V8i and the value of maximum axial force, maximum shear force and maximum bending moment are calculated for the structures with setbacks and compared with the same member in regular structure. It is a plot of the peak value of any response quantity as a function of the small strain natural vibration period (T n ) or frequency (f n ) of a population of inelastic (bilinear elastoplastic) SDOF systems. Click: Add. Time period and Mode participation factor of building in X an d Y direction Seismic force calculation as per IS: 1893(Part 1) - 2002. , it has the same effect as providing an un-normalized acceleration value of 193. ETABS is an engineering designing software that caters to multi-story building analysis and design. 150 × 8 + 0. 1645 Difference Analysis of Loess Seismic Subsidence between In Situ Experiment and Laboratory Test. Response Spectrum Method : Response spectrum method of analysis shall be performed using the design spectrum specified in Clause 6. 13 Time History Response Prediction for Multi-Storey Buildings under Earthquake Ground Motions • For the structure (G+12) the results from time history analysis gives 0. *Divide only T 1 response by R (other modes respond elastically) *Adjust Cs in the short period range to account for higher displacement demands (equal displacement rule doesn't apply) *Should we scale only to base shear? (also to OTM, e. Introduction to Tool Bars,Menus,Model explorer, Help menu Tips to Scheme a building. « Hide 10 20 30 40 50 MVRKKNPPLR NVASEGEGQI LEPIGTESKV SGKNKEFSAD QMSENTDQSD 60 70 80 90 100 AAELNHKEEH SLHVQDPSSS SKKDLKSAVL SEKAGFNYES PSKGGNFPSF 110 120 130 140 150 PHDEVTDRNM. 2 For 20 storey. d behaviour factor for displacements (q d = q, unless otherwise specified) d e displacement determined by a linear analysis based on the design response spectrumthe design response spectrum Upper limit: value from the elastic displacement spectrum Torsional effect are taken into account. Crearea unui nou model structural File – New Model. These peak. Phần mềm CSi – SAP2000, Etabs, Safe, CSiBridge, CSiCOL, Perform 3D, CSiXRevit TRANG THÔNG TIN PHẦN MỀM CHÍNH HÃNG CSI – Nơi chia sẻ thông tin, cập nhật những phiên bản và tính năng mới nhất của các phần mềm SAP2000, ETABS, SAFE, CSIBridge, CSiCOL, Perform 3D, CSiXRevit. In ETabs, model creation and reporting of results are accomplished at the object level. In ETabs, model creation and reporting of results are accomplished at the object level. The overall genetic composition of each genotype, acting in trans, modulated the specific response to environment. Calculation of base shear and its distribution along the height for response spectrum method in IS 1893 (Part 1) : 2016 V. modal and response spectrum (is 1893:2002) analysis 0f r. Introduction The most direct description of an earthquake motion in time domain is provided by accelerograms that are recorded by instruments called Strong Motion Accelerographs. gust (V) 85 mph Basic Wind Speed, 3 sec gust (V), for serviceability wind demands based on a 10 year mean recurrence interval 67 mph Exposure B Occupancy Category II Importance Factor (I w) 1. 19 Recommended Type 1 elastic response spectra for site class A to E with 5% damping 85 4. Structural Final Report Faculty Advisor: Dr. 60 or the Uniform Building Code response spectra. Etabs example-rc building seismic load response-. ETabs is very much prepared to handle rearranged parallel methodology, Push-over investigation, Response Spectrum investigation and Response History investigation. ETABS Training Institute in Noida is all around prepared to deal with rearranged sidelong strategies, Push-over investigation, Response Spectrum Analysis and Response History Analysis. 3 ETABS- Time History Analysis Prof. From the response spectrum analysis the properties of the building such as displacement, storey drift and storey shear have been studied for all the models. Revision of Ver. c frame building (it office, almora) in sap 2000 v14 1. analysis and Dynamic method of analysis. Now the numbers 2. We see the light that arrived from the supernovae 16 million light years after it occurred. In ETABS, it looks like this: the response spectrum is non-dimensional, so the scale factor must include the acceleration due to gravity (g). Perform analysis by clicking Perform Analysis or using the Main Menu, Analysis>Perform Analysis. 60 spectra at 9 Hz to the 1. For the analysis of G+10 RCC flat scheme structure, response spectrum method recommended by IS 1893:2002 was used and structure was assumed to be situated in earthquake zone V on a medium. Q: How does the diaphragm eccentricity option work in the response spectrum load case?. Dynamic analysis carried out using response spectrum method and performance of building evaluated in terms of storey drifts, lateral. The SAPFire Analysis Engine can support multiple 64-bit solvers for analysis optimization and perform both Eigen Analysis and Ritz Analysis. To encourage consensus and consistency in the state of the practice going forward, recommendations related to selecting and scaling ground motions for design and performance assessment of low-. Etabs example-rc building seismic load response- 1. com Abstract. analysis 21 A. 60 spectra enhanced in high frequency from 9 Hz to 50 Hz Increase the Regulatory Guide 1. Response Spectrum Case Data, type a Spectrum Case Name. 13 Time History Response Prediction for Multi-Storey Buildings under Earthquake Ground Motions • For the structure (G+12) the results from time history analysis gives 0. , 2010, Practical Guidelines to Select and Scale Earthquake Records for Nonlinear Response History Analysis of Structures: U. Introduction. The analysis of the building is done by using equivalent static method and dynamic method. In the table the acceleration spectrum in m/s2 (in/sec2) has been doubled and a compensating scale factor of 0. Dividing the two sensitivities will result in a unit-less scale factor that will correct the amplitude in our recorded data. If you are scaling your response spectrum to match some static analysis results (e. Shock Response Spectrum Analysis. we doing seismic loads analysis, if Vspec > Vstatic never reduce scale factor. Impact of friction dampers and ductility factor on the seismic response of concrete the overall results of analysis, the ductile Response Spectrum ETABS Data. Introduction to ETABS Strengths of ETABS How ETABS enables to perform the role. In the first run, the value of the scale factor should be SF = I*g/(2R), in which I is the importance factor. 81 (g) scale factor is assigned as shown in Figure ETABS-14 ETERDCS-Nirma Uni. A linear analysis requires additional scale factors to be applied to the analysis results whereas the results of a nonlinear analysis do not require additional scaling. Evaluation of seismic response of a building with soft story. Probability Factor (Kp). Hence, the scale factor to be provided in ETABS is g x 1000 in m/s2 or 9810. It defines the future of building design software, setting the stage for unsurpassed capability and efficiency worldwide. RSA was conducted with ETABS program. The accelerograph records three orthogonal components of ground acceleration. ETabs is well equipped to handle simplified lateral procedures, Push-over analysis, Response Spectrum Analysis and Response History Analysis. Q: How does the diaphragm eccentricity option work in the response spectrum load case?. Response Spectrum Analysis method is used which is based on ideal predefined data which are not real time data’s collected from real earthquake in the area. Geological Survey Open-File Report 2010, 113 p. Furthermore, elastic response spectra [§6. response spectrum method of analysis, values are determined for each mode of the subsystem from the in-structure response spectra (ISRS). Individuals with autism spectrum disorder (AS. The response spectrum specified for the analysis is the 5%-damped spectrum modified for the effects of the higher damping. This is a function to generate elastic response spectra including Displacement Spectrum, Pseudo Acceleration Spectrum and Pseudo Velocity Spectrum which are needed in "Response Spectrum Analysis" of Structures. , base shear) you may want to include that in the scale factor specified for the response spectrum. These “framing effects” emerge through the integration of emotional responses into decision-making under uncertainty. This tutorial will illustrate how to set up a model for a response spectrum analysis in ETABS however before we do this let's discuss what a response spectrum analysis is response spectrum analyses are typically used for performing seismic analysis response spectrum analysis calculates the maximum response values in each mode of the structure from a spectrum curve and then combines these. No cases of urosepsis due to Klebsiella pneumoniae were identified. The standard response spectrum analysis (RSA) procedure prescribed in various design codes is commonly used by practicing engineers to determine the seismic demands for structural design purpose. Equivalent Static Lateral Force Method (pseudo static method). Deliver projects on ETABS 2016 with seismic (Equivalent static & Response spectrum dynamic) and Wind Analysis (using IS Code and Gust factor). The two-day course aims to equip the participants with the necessary technical expertise and software skills for seismic analysis and design of buildings with reference to Eurocode 8. 1 Storey displacement 5. Linear Static Analysis. Analysis of Building With Response Spectrum Method Seismic Analysis of high-rise building having following data is analyzed for different models of lateral load resisting systems. In contraposition to its extreme mass sensitivity is a limited. Analysis is carried out using FEM software ETABS 2015. Factors to be considered for earthquake design ( Static Method) Below factors are useful when doing the earthquake analysis in sap2000 or etabs. seismic behavior of RCC Columns. Select Dynamics (Eigensolution / Response Spectra) from the Solve menu. Figure 1 ETABs - 3D Model of the Importance factor, I = 1. It lacks some of the simplicity that ETABS has of discretizing the structure into macroscopic elements. When defining response spectrum load case in ETABS, we have three directions; u1, u2 and u3. If exceeded 7mm, recheck the whole model. Response Spectrum Analysis. Linear Static Analysis. The SAPFire Analysis Engine can support multiple 64-bit solvers for analysis optimization and perform both Eigen Analysis and Ritz Analysis. The earthquake ground acceleration in each direction is given as a digitized response-spectrum curve of pseudo- spectral acceleration response versus period of the structure. Response-spectrum analysis seeks the likely maximum response to these equations rather than the full time history. Response spectra load cases are define in Response Spectrum cases The damping value is specified which is used to generate the response spectrum curve. If you are scaling the response spectrum to match with the static analysis results, you need to input the computed scale factor and specified it under response spectrum cases in ETABS. It enables the designer to focus on macroscopic performance targets. The analysis has been purely done through software approach using the software STAAD Pro for analysis. The areas selected are meshed with the line intersecting the area. 95 assumes that the optics in the emission light path (with the exception of the dichroic and the emitter) have 95% transmission. In general, the response spectra analysis procedure is based on the assumption that the dynamic response of a structural model can be approximated as a summation of the responses of the. Failure punching shears 2. Response Spectrum Analysis. Enter a scale factor that multiplies each acceleration load. The appropriate scale factors for response spectrum analysis was determined, by scaling between average story acceleration from nonlinear response history analysis and response spectrum analysis since the inertial forces were governing the design rather than. Response Spectrum Analysis The seismic loads are taken into account according to the Response Spectrum Analysis method. 0 Directionality factor, k d = 0. BUILDING OF G+9 FLOORS IN RESPONSE SPECTRUM METHOD USING ETABS 2013 SOFTWARE. Preliminary limited to building design it encapsulate advance building modeling and drawing options. Oral Buyukozturk Fall 2003 3. response spectrum method of analysis, values are determined for each mode of the subsystem from the in-structure response spectra (ISRS). Dynamic Analysis - Response Spectra A Response Spectra Analysis may be performed after the dynamic analysis to obtain forces, stresses and deflections. and a scale factor of 1. djvu Analysis of Alternative Systems for a Berthing Structures Analysis of Composite Structures Analysis of Concrete Structures by Fracture Mechanics Analysis of Engineering Structures Analysis of Structural Member Systems. In the table the acceleration spectrum in m/s 2 (in/sec 2) has been doubled and a compensating scale factor of 0. seismic zone factor on the seismic performance of G+20 building structure. Response spectra load cases are define in Response Spectrum cases The damping value is specified which is used to generate the response spectrum curve. 95 assumes that the optics in the emission light path (with the exception of the dichroic and the emitter) have 95% transmission. etabs software. To encourage consensus and consistency in the state of the practice going forward, recommendations related to selecting and scaling ground motions for design and performance assessment of low-. response spectrum analysis procedure and the equivalent static design were used to verify the seismic design base shear, story drift, roof displacement, response spectrum modal, and peak floor acceleration under different spectral response acceleration parameters suggested by above codes. Duplicated genes and transcription factors, establishing different number of network connections by gaining or losing links, play a dominant role in shaping organoleptic profile. ETABS 2015 Applications of of Seismic Standards - Some Features of ETABS 2015 Loading, Automated response-spectrum functions for Argentina. Summed scores can range from 0 to 39. Inter-storey drift check j. Comparison of results from scale models (3 × 3 groups of piles from sections of Pohang New Port, Korea) with those from the analysis showed that the response spectrum analysis using virtual fixed points does not adequately simulate the natural period or pile bending moment of a pile-supported wharf system. ETabs is very much prepared to handle rearranged parallel methodology, Push-over investigation, Response Spectrum investigation and Response History investigation. RESPONSE SPECTRUM ANALYSIS RESULTS. If the spectrum is ASCE, the appropriate values will light up. Scale factor = 9,81 x 1 / 4,8 = 2,044. response spectrum method of analysis, values are determined for each mode of the subsystem from the in-structure response spectra (ISRS). Dynamic analysis. Nilai spectrum respons tersebut dikalikan dengan suatu factor skala (scale factor) yang besarnya = g x I/R dengan g = percepatan grafitasi (g = 981 cm/det 2). , 2010, Practical Guidelines to Select and Scale Earthquake Records for Nonlinear Response History Analysis of Structures: U. Once the scale factor is set in the response spectrum case, it is automatically adjusted if the length units are changed. The images are 100 percent image scale and are cropped from the full size image. Therefore, Response Spectrum Function must be defined, which includes the range of the natural periods obtained from the Eigenvalue analysis. The analysis of the building is done by using equivalent static method and dynamic method. c frame building (it office, almora) in sap 2000 v14 1. can we do that in ETABS? A: Once you've run the analysis and determined the static base shear value, users can adjust the scale factor in the response spectrum load case to match the static base shear value. Load Case Data - Response Spectrum. but if i remember it right, you just put something like i think sds and sdm (not sure). 95 assumes that the optics in the emission light path (with the exception of the dichroic and the emitter) have 95% transmission. c frame building (it office, almora) in sap 2000 v14 1. In ASCE and UBC, you need to first multiply the forces obtained via response spectrum analysis by the importance factor I divided by the response modification coefficient R. We at engineeringcivil. Coefficient Method The coefficient, or displacement modification method, builds on the linear modal response spectrum procedure described previously. Comparison of total DL and LL. Static analysis gives higher storey shear values compared to dynamic analysis, hence, Response Spectrum method may be used for seismic zone-II and III to optimize the design. In this paper, the earthquake response of symmetric multistoried building is studied by manual calculation and with the help of ETABS 9. 040) • 20) = 2. The effects of child complexity on responses to behavioural interventions for sleep problems in children with autism spectrum disorders. For dynamic analysis time history method or response spectra method is used. Analysis is carried out using FEM software ETABS 2015. 1371/journal. RVT site response analysis for forward-directivity motions was performed by characterizing the near-fault, forward-directivity input motions via modified acceleration response spectra with enhanced long period spectral values. The data output choices are considerably more conducive to lateral design in particular purpose software like ETabs. It defines the future of building design software, setting the stage for unsurpassed capability and efficiency worldwide. 4 allows to equate the RS-BS to 90% or 100% of ELFP-BS, no matter, whether to increase or decrease. Participants are assumed to have basic knowledge of structural dynamics (through short course or workshop) and familiar with ETABS software. bracing in the bottom storey. (b) Dynamic Analysis Method The design response spectra of IS 1893-2002 given as input in the Define menu > Response Spectrum Functions. seismic analysis is done considering with and without viscoelastic dampers. Re: Response spectrum analysis - getting wrong results Hello, the main reason of difference between seismic load cases and spectral load cases in your last model was the behaviour factor R=8. *Divide only T 1 response by R (other modes respond elastically) *Adjust Cs in the short period range to account for higher displacement demands (equal displacement rule doesn't apply) *Should we scale only to base shear? (also to OTM, e. The maximum value of the integral in (13) will. Perform analysis by clicking Perform Analysis or using the Main Menu, Analysis>Perform Analysis. Since one is the inverse of the other, the two graphs are just mirrored when plotting on a logarithmic scale. 3 Required Indian Standard Codes IS 456:2000 As per clause 32, design for wall describes, design of horizontal shear in clause 32. 8 T eff are divided by the damping reduction factor B for the effective damping of the isolated bridge. The analysis has been done taking torsion into consideration and analyzed as per IS code. develop reduced response spectrum. 81 hoping this clear. Use the name shown or type a new name in this edit box. using nonlinear response history analysis (RHA) to demonstrate performance of structures. 5 Modal response spectrum analysis 5. When defining response spectrum load case in ETABS, we have three directions; u1, u2 and u3. 3) Time period and Mode participation factor of building in X and Y direction. The analysis of the building models is done with the help of CSI ETABS 2016 software. Re: Response spectrum analysis - getting wrong results Hello, the main reason of difference between seismic load cases and spectral load cases in your last model was the behaviour factor R=8. The SAPFire Analysis Engine can support multiple 64-bit solvers for analysis optimization and perform both Eigen Analysis and Ritz Analysis. • Pushover analysis is one of the analysis methods recommended by Eurocode and FEMA 273. 4 Structural type of the building and behaviour factor 2. Table of Content Objective 5 Problem 5 Step by Step 11 1. E-Tabs is well equipped to handle simplified lateral procedures, Push-over analysis, Response Spectrum Analysis and Response History Analysis. SAP2000 released September, 1998 ; Full 3D implementation ; Single model for - linear static analysis - linear response spectrum analysis - linear time history analysis - nonlinear time history analysis - nonlinear static pushover analysis - steel and concrete design ; 51 SAP2000/ETABS Pushover Options. A response spectrum is defined by giving a table of values of S at increasing values of frequency, ω, for increasing values of damping, ξ. Finally the dampers are placed, first at top 25 stoteys and then from 7th storey to 32nd storey to obtain the suitability of damper location. The behavior of flat slab is investigated in terms of the following factors: 1. The Dizziness Handicap Inventory (DHI) is a validated, self-report questionnaire which is widely used as an outcome measure. Dynamic analysis is further classified into response spectrum method or time history method. The frame geometry is shown in Figure 4-1. Dynamic analysis carried out using response spectrum method and performance of building evaluated in terms of storey drifts, lateral. Multi-tower building b. The analysis of absolute displacements of a building using linear response spectrum methods, taking into account indirectly the nonlinear behavior of structural elements by introducing the behavior factor, and the nonlinear static analysis using pushover procedure have been performed. 4 allows to equate the RS-BS to 90% or 100% of ELFP-BS, no matter, whether to increase or decrease. Essentially ETASS assumes the response spectrum functions are unitless normalized and that the scale factor converts them into the appropriate units i. column at various floors. 81 m/sec2 for kN-m). 17% at DBE and MCE. The industry-leading Tektronix real time spectrum analyzers, powered with SignalVu software, provide advanced analysis capabilities. Analysis has been carried out using different method of analysis for static earthquake forces, dynamic earthquake forces (response spectrum analysis and time history analysis performed under the guidelines of IS: 1893-2002 and IS: 800-2000 respectively) and static wind forces. 1371/journal. در شکل زیر مسیر تعریف حالت بار طیفی نشان داده شده است. modal and response spectrum (is 18932002) analysis 0f r. Response-spectrum data, as well as acceleration time-history records, are often provide in g's, so they need to be scaled into ft/s^2, or whatever are the current length/time^2 units. with time interval of 0. key factors for seismic response modification factor of RCC framed staging of elevated water tank. A real scale earthquake data of El centro has been considered and excitations has been scaled to initial 6 sec. The present study involves response spectrum analysis (RSA) and construction sequence analysis (CSA), which are done on a setback steel structure and the structural analysis results such as storey displacement, maximum axial force, maximum shear force and maximum bending moment of the structural frame elements are compared. 36, importance factor 1. CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. The site specific response spectrum obtained at various sites of Ahmedabad are compared with the standard response spectrum given in IS 1893:2002 for medium soil condition. Response spectrum analysis Response spectrum analysis is performed to verify that the column Enter Scale Factor = 32. The maximum value of the integral in (13) will. Response Spectrum Method of Analysis - Free download as Powerpoint Presentation (. all degrees of freedom. 1 in2 and is subjected to a vertical motion of support by displacement spectrum of 1 in. This local-scale urban meteorological parameterization scheme (LUMPS. Definirea tipurilor de. Analysis and design of the structure is done and then the results generated by these softwares are compared and a conclusion is drawn from them. 1] Scaling of the results of Modal Response Spectrum Analysis is required and allowed. To Perform a Response Spectra Analysis. Apply non-seismic loads to unstressed structure Select pushover direction and mode shape for. For seismic analysis, a well-known response spectrum method is used. Build an analysis model consistent with ASCE 7 requirement for Modal Response Spectrum Analysis. analysis of buildings; two of them are presented here: a. Seismic Performance of RC Building Using Spectrum Response and Pushover Analyses Mehani Youcef(&), Kibboua Abderrahmane, and Chikh Benazouz National Earthquake Engineering Research Center (CGS), Algiers, Algeria [email protected] Factors to be considered for earthquake design ( Static Method) Below factors are useful when doing the earthquake analysis in sap2000 or etabs. The damping value is specified which is used to generate the response spectrum curve. Linear Static Analysis. displacement for response spectrum analysis with different case for X and Y directions are compared. The ordinates of the 5%-damped response spectrum for values of period larger than 0. For dynamic analysis time history method or response spectra method is used. Tutorial for Response Spectrum Analysis using CAEPIPE The following are the Steps for performing the Response Spectrum Analysis using CAEPIPE. Calculate the seismic demands for a structure using the Modal Response Spectrum Analysis Method. « Hide 10 20 30 40 50 MVRKKNPPLR NVASEGEGQI LEPIGTESKV SGKNKEFSAD QMSENTDQSD 60 70 80 90 100 AAELNHKEEH SLHVQDPSSS SKKDLKSAVL SEKAGFNYES PSKGGNFPSF 110 120 130 140 150 PHDEVTDRNM. It is equipped to handle lateral procedures simply, Response Spectrum Analysis, Push-over analysis, and Response History Analysis. In Octave Spectrum analysis, you get options to change settings like Bands per octave, min and max amplitude (in dB), response time, etc. These maximum responses are then combined to give a total response of the structure. The analysis is carried by using F. Civilknowhow Tutorials 91,879 views. modal and response spectrum (is 1893:2002) analysis 0f r. then scale down the dynamic base shear by the ratio on the load combination factor. 3-times amplified spectral values at 25 Hz. When scaling results, one should verify that R, I, g (gravity conversion for mass) factors are included. Thus, only (3 Sigma probability) 0. A Response Spectrum input of Displacement is entered to excite the structure in this example. all degrees of freedom. Time history site response analyses were performed with forward-directivity and non-directivity input rock motions. Vaidya Mob: 9619110342 Email- [email protected] modal and response spectrum (is 18932002) analysis 0f r. Model (1) is the special moment resisting frame (SMRF) structural system and other three models are composed of shear walls and SMRF (dual type) structural system. For each mode, a response is read from the design spectrum, based on the modal frequency and the modal mass, and they are then combined to provide an estimate of the total response of the structure. Modal and directional combinations h. Any number of spectra can be defined. ETABS 2015 Applications of of Seismic Standards - Some Features of ETABS 2015 Loading, Automated response-spectrum functions for Argentina. In ETABS - special purpose software, the data output options are more favorable to lateral design. 3 Analysis GFRP. response spectrum analysis procedure and the equivalent static design were used to verify the seismic design base shear, story drift, roof displacement, response spectrum modal, and peak floor acceleration under different spectral response acceleration parameters suggested by above codes. Pro V8i-Dynamic Response Spectrum Seismic Analysis-Video Training Chapter-1 What is Earthquake Types of Seismic Waves Classification Seismotonics of India Earth Quake Zone GENERAL EFFECTS OF EARTHQUAKES Types of Damage and reason Effects of Earthquakes Site Selection Building Construction Materials Horizontal and Vertical Shaking of a Structure Building Planning | Earthquake Resistant. Enter spectral data for response spectrum analysis. 0 kN/m ANALYSIS A. The frame geometry is shown in Figure 4-1. It defines the future of building design software, setting the stage for unsurpassed capability and efficiency worldwide. Multi-tower building b.