Modal superposition in mode superposition analysis, it is assumed that the structural response can be obtained from the p lowest modes of the structure. Pro is one of the most widely used structural analysis and design software products worldwide. Time history displacements when saved in a text file from. Time history analysis is also known as nonlinear dynamic analysis. Staad sets p to be the value defined through the cut off mode shape command. Analysis and design of turbo generator machine foundation. This paper presents the dynamic time history analysis and response spectrum method of a concrete gravity dam by using staadpro. In the first case i showed to you i had used a newmark method for the time history analysis. Timehistory analysis first steps tutorials computers and.
In the case showed in th epicture below i am using modal decomposition method, but the results are so different from each other. Us29 time history analysis of a frame for seismic loads. This paper presents the dynamic time history analysis and response spectrum analysis of a concrete gravity dam by using staad pro. Select define functions time history to define a time history function which characterizes load variation over time. Pro consists of a set of manuals as described below. Program calculates sag for each mode utilizing time period and damping for each mode. To perform such an analysis, a representative earthquake time history is required for a structure being evaluated. Program calculates time periods for first six modes or as specified by the user. Linear time history analysis of mdof structure by mode superposition method using newmarks. Learn to interpret the result which is utmost important part of learning.
In that report the displacements reported for a particular time step is that for a subsequent time step. Advanced analysis and design with an array of advanced analysis capabilities including linear static, response spectra, time history, cable, imperfection, pushover and nonlinear analyses. Response spectrum analysis as per is1893 in staad pro. These manuals are normally provided only in the electronic format, with perhaps some exceptions such as the getting started manual which may be supplied as a printed book to first time and newversion buyers. Here finite element approach is used to analyze the dam. Test problems to demonstrate the differences and similarities between steadystate and time history analyses. Test problems to demonstrate the differences and similarities between steadystate and timehistory analyses. Pro is a structural analysis and design software application originally developed by research engineers international in 1997. Design procedure of tabletop foundations for vibrating machines. Pro, includes linear static, response spectra, time history, cable, imperfection, pushover, and nonlinear analyses. Nonlinear dynamic analysis it is known as time history analysis.
Pro advanced, which extends the scope of the standard version of staad. Reinforcement calculations for concrete beams, columns, slabs and shear. Comparison between response spectrum and time history. Results from time history analysis ethesis nit rourkela. Inclusion of static, dynamic, pdelta, nonlinear and cable analysis along with steel. Us16 time history analysis for forcing function and ground motion.
The remainder of the words form a title to identify this project. Comparison between response spectrum and time history method. Absolute responses blast loading finding amplitude of vibration large. Dynamic analysis may be performed either by time history method or by. Time history analysis in staad pro v8i structures under seismic. Design engines for code checking and optimization of steel, aluminum and timber members.
If you edit or modify your data file, you would need to edit the time history load case to reload the data. The time history response of a structure is simply the response motion or force of the structure evaluated as a function of time including inertial. Time history analysis in staad pro v8i structures under seismic accelerations duration. Time line diagram introduction scope of work aim of project introduction of analysis and design design of structural elements beam column slab stairs footing shear wall problem definition plan of residential building analysis and design of building in staad. In late 2005, research engineers international was bought by bentley systems. Elnashai, fundamentals of earthquake engineering basic information on dynamic analysis 15. Pro advanced provides your engineering team with a scalable solution that will meet the demands of your project. What is difference between time history analysis and response spectrum analysis. One can save the time history of displacements in a text file from within postprocessing dynamics timedisp page, by right clicking on the plot and choosing the option save data in a text file. And by using time history method for multistorey building the story displacement and story drift calculated. Model analysis find natural frequency of structure. A time history analysis method for studying the multi. The word space signifies that the structure is a space frame and the geometry is defined through x, y and z axes.
Conclusions the rc turbine foundation has been effectively broke down by time history analysis utilizing staad pro. Sep 19, 2017 export pdf files instead of printing at the time of design analysis of staad pro export pdf files instead of printing at the time of design analysis of staad pro. Broad spectra of design codes steel, concrete, timber, and aluminum design codes from all around the world including a number of historical codes means that you can take staad. Create the model and assign support conditions to restrained joints. Mar 27, 2019 time history analysis may be initiated using the process which follows. Staad pro product data sheet staad, staad pro, civil. With an array of advanced analysis capabilities including linear static, response spectra, time history, cable, and. The time history analysis method is also capability to. With time, staad progress to create its own graphical environment, this was a major change for the staad users, as they were able to build their input file without the need to understand the. In example 29 the acceleration time history is referred to an external file, i assumed that the external. Assign load conditions to the model through assign joint loads or frame loads. Pdf analysis by staadpro and design of structural elements. Analysis of framed machine foundation using time history analysis introduction to time history analysis analysis of turbine, pump foundation using time history analysis m. From the three dynamic characteristics of ground motion, which are pga.
This page contains a list of faqs related to time history analysis. A research presents the dynamic time history analysis and response spectrum method of a concrete gravity. Every staad input file has to begin with the word staad. Structural analysis is the prediction of performance of a given. This paper presents the dynamic time history analysis and response spectrum method of a concrete gravity dam by using staad pro. So the correct giving similar results to staad modal definition in robot.
Timehistory is used to find the structural response under ground. Pdf today, tall structures have turned out to be overall engineering wonder. May 25, 2017 time history analysis of structures is carried out when the input is in the form of specified time history of ground motion. A response time history analysis can be used to calculate a structures response to time varying loads. Analysis of each of above type of structure using staad fem and design using is. Us16 time history analysis for forcing function and. Time history analysis is performed using direct integration methods or by using fourier transformation technique. Time history is basically a method of seismic analysis for the simulation of an earthquake motion.
Pro a leading product in structural analysis and design. Pro v8i is the premier fem analysis and design tool for any type of project including towers, culverts, plants, bridges, stadiums, and marine structures. Models run in the new version should produce the same results as in the previous version, subject to minor. Export pdf files instead of printing at the time of design analysis of staad pro export pdf files instead of printing at the time of design analysis of staad pro. Pro crashing for dell laptop when browsing a file location. Hi all, just have a couple of clarifications with regards to time history analysis in staadpro. The time history response of a structure is simply the response motion or force of the structure evaluated as a function of time including inertial effects.
Aug 16, 2016 14 artificial time history acceleration matched to a code spectrum amr s. It is an ultimate tool to study the dynamic response of a structure. Analysis engines for performing linear elastic and pdelta analysis, finite element analysis, frequency extraction, and dynamic response spectrum, time history, steady state, etc. A time history is the advanced method of dynamic analysis. The time history response of a structure is simply the response motion or. Learn seismic analysis by seismic coefficient method in staad pro. What is difference between time history analysis and. Time history analysis ram staad bentley communities. Design of multistoried residential building using staad. References are provided to other resources for the use of response spectrum curves, selection and scaling of ground motions, and definition of additional parameters required for the different nonlinear analysis types. V8i for structures under seismic accelerations, analysis of a structure, applying data over increment time steps as a function of. Why does this happen, and which ishould be most reliable one. Comparative study of static and dynamic seismic analysis of a. It is an important technique for structural seismic analysis especially when the evaluated structural response is nonlinear.
944 261 1251 49 571 399 595 63 782 503 68 1339 996 515 1026 1147 893 666 240 24 871 670 1157 840 807 449 55 792 430 853 1307 398 209 367 672 725 661 1178 1294 1105 592 1387 579 1309