As traditional pushover analysis is widely used for design and seismic performance evaluation purposes, its limitations, weaknesses and the accuracy of its predictions in routine application should be identified by studying the factors affecting the pushover predictions. Pushover analysis using etabs and sap2000 strength of. The pushover analysis is relatively simple way to explore the design of. Sap2000 training collection civil engineering community. Setelah itu akan nampak jendela program sap2000 terbuka sbb. Learn about the sap2000 structural analysis and design p. Nonlinear analysissap 2000 nonlinear static analysis using. In pa, in the global sense, it is the base shear vb vs roof top displacement. Performance based seismic analysis for buildings in india. However nsp suffers from a major drawback in that it is restricted with a singlemode response and therefore the procedure can be.
Introduction the indian subcontinent has a history of devastating earthquakes. From a simple small 2d static frame analysis to a large complex 3d nonlinear dynamic analysis, sap2000 is the answer to all structural analysis and design needs. Dear all, i am running a pushover analysis for some 3d rc frame structures with opensees and trying to compare the results with sap2000. Therefore, pushover analysis with single load pattern may not yield correct results for a bridge model. For the pushover analyses realized with concentrated hinges, sap 2000 5 and midascivil 6 are in fact the two commercial software used to reach such goal. Bridge designers can use sap2000 bridge templates for generating bridge models, automated bridge live load analysis and design, bridge base isolation, bridge construction sequence analysis, large deformation cable supported bridge analysis and pushover analysis. Seismic performance analysis of unreinforced masonry wall. Get one month free at linkedin learning sap2000 complete course course at the cheapest. Using sap2000 software package in earthquake engineering. The static pushover analysis is becoming a popular tool for seismic performance evaluation of existing and new. Applicable to static, modal, and buckling load cases.
Analysis of trusses using sap2000 introduction manual. Deformation cable supported bridge analysis and pushover analysis. Pushover analysis for seismic evaluation of masonry wall amit. Analysis is done using sap 2000 3 for bare frame model and frame with infill walls on all floors except ground floor using response spectrum method. Assessment of the applicability of pushover analysis for a. Feb, 2016 the pushover analysis from basics presented by rahul leslie 41. The nonlinear pushover analysis is performed to find performance point and analyzed the behavior of the irregular structure. Methods for drift control and segmental construction analysis. However, most of these researches made use of specifically designed structures in the context of the study or specific forms of pushover procedure. Mar 27, 2019 hinges may be defined manually or by using one of several default specifications which are available.
I am doing pushover analysis for 12 story rc frame using sap2000 and. The pushover analysis from basics presented by rahul leslie 42. Brick masonry in sap 2000 computers and structures. The analysis procedure can be divided into three parts. Im also looking for information about how to use sap 2000 to make ida of an school building, because the perform 3d isnt easy to use and, by the other side, using sap 2000 we can process the. A threedimensional rc flat slab structure l shape building is modelled using sap 2000. Fiber hinges pushover analysis computers and structures. Study on the performance of flat slab structure using. The aim of the current paper is the assessment of the applicability of pushover analysis for a concrete gravity dam by using sap 2000 software. Reduction in stiffness and increase in energy dissipation capacity. The lateral loads acting on the frames were obtained from the guidelines of is 1893part1. The frame has been designed as per the guidelines of is 456. After which nonlinear analysis was performed using sap 2000 software. How to do model the pushover analysis in sap 2000 along a.
The dam is supposed to be fixed in a rigid foundation. An incremental response spectrum analysis procedure based on. Guidelines for accelerationload application in an arbitrary direction. Buka program sap 2000 versi 10 dengan cara klik start all programs sap2000 10 demo sap2000. Learn about the sap2000 3d finite element based structural analysis and design program and how it can be used to perform a nonlinear static. Get one month free at linkedin learning sap2000 complete course course at the cheapest rate. For the purpose of analysis, modeling has been done using sap 2000 software of computers and structures inc. Using sap2000 for pushover analysis we will use the same frame elastic beams, just modify dead loads. The major reason for the high frequency and intensity of the earthquakes is that the indian plate is driving. In other words, the applicability of pushover analysis in predicting. The third part of this volume, the sap2000 introductory tutorial manual, is intended to provide firsttime users with handson experience using the modeling, analysis and design features of sap2000. Pushover analysis in sap2000 civil engineering community.
Desain konstruksi dengan sap 2000 csi analysis reference manual. I need some sort of synopsis or any tutorial that may provide me clear understanding. In sap2000, by using define load cases add new load case you can define a nonlinear static load. Plastic hinge length using sap 2000 5 some authors have proposed various expressions in order to establish the correct hinge length. Boumrkik, static analysis of multistoreyed rc building by pushover analysis, ijirst, jan 2008. Pushover analysis first steps tutorials computers and.
Stateoftheart 3d finite element technology for structural engineers. Hinges may be defined manually or by using one of several default specifications which are available. Assign the pushover hinges to selected frame objects using assign frame hinges. Pdf seismic damage prediction of reinforced concrete. Pushover analysis first steps tutorials computers and structures. In the present study a 4 span rc bridge existed in sh12 in karnataka, india, was selected and by defining fema 356 auto hinges conducted nonlinear static pushover analysis using atc 40 capacity spectrum method and software sap2000 was used to analyze the bridge. Select define load patterns to define load patterns which will contain the loads applied during pushover analysis. Pushover analysis using etabs and sap2000 free ebook download as pdf file. In sap2000 more than one pushover load case can be run in the same. Pdf pushover analysis of rcc set back building using. On sa, the analysis results are always the elastic limit state forces moment, shear and axial forces to be designed for. Analysis of elastoplastic soilstructure interaction system.
The socalled nonlinear static procedure nsp based on pushover analysis has been developed in the last decade as a practical engineering tool to estimate the inelastic response quantities in the framework of performancebased seismic evaluation of structures. Immediate occupancy io, damage control dc and life safety ls the results are compared in terms of various performance parameters. All the stresses tensile and shear are found within the permissible limit as per is1905. Standard pushover analysis using fema 356 2000 displacement coefficient method and an improved upper bound pushover analysis method were used to analyse the building. In addition, the pushover method is easy to carry out, resulting in its popularity among the researchers and the engineers pu et al 2000, dasui et al2004. Segment oa has time period ta, curve a representing the rs curve and saa is the lateral load demand, in its elastic range. Sap2000 nonlinear version 10 2005 users reference manual. But the question is, how is it possible to run a pushover analysis in sap2000 using distributed load. Pushover is a staticnonlinear analysis method where a structure is subjected to gravity loading and a monotonic displacementcontrolled lateral load pattern which continuously increases through elastic and inelastic behavior until an ultimate condition is reached. Nonlinear analysis of existing rc bridge using sap 2000. The various aspects of pushover analysis and the accuracy of pushover analysis in predicting seismic demands are investigated by several researchers. The pushover analysis from basics presented by rahul leslie 41. Pushover analysis of fixed offshore structures ijert. Girgin, evaluation of pushover analysis procedure for steel frames, jung lee, april 2007.
Pushover analysis features in sap2000 include the implementation of fema 356 and the hinge and fiber hinge option based on stressstrain. The grids provided in sap makes it easier to create the geometric input than with the staadpro. The nonlinear layered shell element enables users to consider plastic behavior of concrete shear walls, slabs, steel plates, and other area finite elements in the pushover analysis. Dynamic analysis is stronger in sap2000 earthquake force applied in any direction, automatic lumping of masses for earthquake, live load reduction, bridges transient loads, eigenmodes and ritz modes, etc. Where can i find a detailed example of pushover analysis. Lateral load may represent the range of base shear induced by earthquake loading. In sap 2000 the shell element is a three or four node formulation that combines separate. How can i perform incremental dynamic analysis on sap 2000. Hi experts, i am about to run a pushover analysis of my model to establish a comparative study. Analysis capabilities include static nonlinear analysis for material and geometric effects, including pushover analysis. I hope i can help you with an answer to this question. The hinges should be assigned at both the ends which means at the relative distance of.
Frames structures can be model using linear elements beams, columns, braces connected in nodes modelling of inelastic behavior of structural components must be accounted to perform a inelastic structural analysis software. And further i have to do non linear pushover analysis of the structure seems to be similar as yours. Conversely, in pushover analysis, based on one or more. Yielding, seismic performance, pushover analysis, elastic capacity, sap 2000 1. In deformed shape form the step at which the result is to be seen should be given. The deformed shape form will appear as shown in figure 16.
Nonlinear analysis sap 2000 nonlinear static analysis using sap 2000 mitesh surana research scholar, department of earthquake engineering, iit roorkee for queries please mail to. Based on the analysis performed for three different performance levels viz. Sap2000 video tutorials and manuals 2000 business ideas. I am using nonlinear fiber sections distributed plasticity in opensees, so, to achieve a similar modelling in sap2000, i used section designer to create the sections, set reinforcing bars and define fiber layout, and then assigned fiber hinges pmm with. Modeling in sap 2000 software in order to model the wall in sap2000 we use shell area element. To see the deformed shape under pushover load case and hinges at any step, go to display show deformed shape select load case push. Hinges may be defined manually or by using one of several default. Sap2000 represents the stateoftheart in three dimensional finite element technology for structural engineering. Incremental modal pushover analysis for bridges applied sciences. A 12span existing rc bridge was selected for the case study. In order to achieve this result, a concrete gravity dam with 45m of height and 40m of water level in the reservoir has been studied. The sap2000 graphic user interface gui is used to model, analyze, design, and display the structure geometry, properties and analysis results.
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