The fema 356 rule, which is built in sap 2000 with the io, ls, and cp limit states for hinge rotation have been used for the acceptance criteria. Pdf a modal pushover analysis on multispan concrete bridges. Pushover analysis and seismic retrofitting using shear walls and bracing system of frame structure. Introduction one of the emerging fields in seismic design of. Nonlinear static pushover analysis of the model is presented by uniform acceleration lateral load pattern and inverted triangle lateral load pattern. Pushover analysis of i5 ravenna bridge electronic journal of. Pushover analysis of rc bridge designed according to en 19982. Pdf the performance of modal pushover analysis mpa in predicting the inelastic seismic response of multispan. Dear all, i am running a pushover analysis for some 3d rc frame structures with opensees and trying to compare the results with sap2000. Nov 09, 2016 check out this video on seismic design methods and see a demonstration of rm bridge. Time history, linear and nonlinear analysis, pushover analysis, base isolators, viscous dampers, power spectral density, staged construction. Re sponse spectrum, time history, linear and nonlinear analysis, pushover analysis, base isolators. Therefore, pushover analysis with single load pattern may not yield correct results for a bridge model. Balafas2 1 assistant professor, division of structural engineering department of civil engineering, aristotle university of thessaloniki, 541 24 greece email.
Eeri a relatively simple nonlinear method for the seismic. Pushover analysis can be viewed as a method for predicting seismic force and. The computer program sap2000 and all associated documentation are proprietary and. Sap 2000 tutorial, sap 2000 tutorial analysis of dynamic vehicle loading v12s. Practical three dimensional nonlinear static pushover analysis, computers and structures, inc. Pushover analysis of bridge deformation engineering. Target performance dictated by codes dbybhy 2007, section 1. Pushover analysis and seismic retrofitting using shear walls.
Deformation cable supported bridge analysis and pushover analysis. Sap 2000 tutorial,sap 2000 tutorial analysis of dynamic vehicle loading v12s. The general finite element package sap 2000 has been used for the analyses. To study the nonlinear mechanical characteristics of reinforced concrete shear wall structures under rare earthquakes, a single reinforced concrete shear wall model is established in. Nonlinear analysissap 2000 4 the hinges should be assigned at both the ends which means at the relative distance of 0 and 1 and form as shown in figure 7 will appear. Define properties for pushover hinges using define section properties hinge properties. Sap2000 tutorials training videos, manuals and model files 38 gb civil engineering community from. The manual of sap2000 recommends a distributed plastic hinge model.
Introduction one of the emerging fields in seismic design of structures is the performance based design. Itani and liao 2003 used the capacity spectrum method and sap2000 to evaluate the effect of different retrofit applications for a short. Non linear static pushover analysis in sap2000 engineers. In 2000, sap modeled and also analyzed three distinct bridges. Pushover analysis an inelastic static analysis methods courtesy of bar. Structural software for analysis and design sap2000. Nonlinear static pushover analysis for shear wall structures. Sap 2000 tutorial analysis of dynamic vehicle loading v12s.
Fiber hinges pushover analysis computers and structures. The sap name has been synonymous with stateoftheart analytical methods since its introduction over 30 years ago. It is part of the process of structural design, earthquake engineering or structural assessment and retrofit see structural engineering in regions where earthquakes are prevalent. The relationship curve between base shear and top displacement of shear wall, and the stress distribution diagrams of the concrete layer and rebar layer are obtained. 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. A 12span existing rc bridge was selected for the case study. Creating the basic computer model without the pushover data in the usual manner. 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. Sap2000 follows in the same tradition featuring a very sophisticated, intuitive and versatile user interface powered by an unmatched analysis engine and design tools for engineers working on transportation, industrial, public works, sports, and other facilities. 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. It comes in several versions standard, plus and advanced. Pushover analysis first steps tutorials computers and structures. To close, the pushover analysis of two bridges is carried in their longitudinal direction.
Keywords sap 2000, concrete girder bridge, dynamic analysis, moving loads introduction a bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose. Ahmet yakut april 2005, 156 pages pushover analysis involves certain approximations and simplifications that some amount of variation is always expected to exist in seismic demand prediction of pushover. Afterwards the fema 356 hinges are defined in the model and conducted nonlinear static pushover analysis. Seismic assessment of bridges using the pushover analysis technique often ignores the effect of some sources of nonlinearity such as those associated with the foundation soil and the boundary conditions. I am using nonlinear fiber sections distributed plasticity in. Seismic capacity assessment of existing rc buildings in. Sap2000 follows in the same tradition featuring a very sophisticated, intuitive and. The pushover analysis from basics presented by rahul leslie 42. V braced building by using pushover analysis shown in figure d. Guidelines and tutorial for modeling haunched steelgirder bridges. The pushover analysis from basics presented by rahul leslie 41. Mar 28, 2019 a detailed and extensive procedure which describes the modeling, analysis, and design of a 3d steelframe pipe rack system.
Nonlinear analysis of existing rc bridge using sap 2000. Practical three dimensional nonlinear static pushover. Inclined compression braced building by using pushover analysis s hown in f igure a. Sap2000 is a program developed by the company csi, computer and structures, inc.
Sap2000 seismic analysis civil engineering community. Standard pushover analysis using fema 356 2000 displacement coefficient method and an improved upper bound pushover analysis method were used to analyse the building. Seismic assessment of wsdot bridges with prestressed. A detailed and extensive procedure which describes the modeling, analysis, and design of a 3d steelframe pipe rack system. 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. Pushover analysis description robot structural analysis. Threedimensional finiteelement model of the bridge using sap2000 2007. The various aspects of pushover analysis and the accuracy of pushover analysis in predicting. The sap name has been synonymous with state of theart analytical methods since its introduction over 30 years ago. Sap2000 training collection civil engineering community.
Pradip sarkar, who provided me with valuable inputs at each and every moment. Practical implementation of generalized pushover analysis. American society of civil engineers, 2000, and atc40 applied technology council, 1996 documents, are used. The analysis options available in msbridge include. Several analyses were performed on these bridges including linear.
Eeri a relatively simple nonlinear method for the seismic analysis of structures the n2 method is presented. This tutorial provides an introduction to the assignment of joint patterns. Mar 27, 2019 csi analysis reference manual nonlinear static analysis static pushover analysis, page 394 habibullah, a. These were known as culpeper, welland river bridge and door creek bridge. Hakim et al seismic assessment of rc building using pushover analysis. Introduction the eurocode 82 proposes several methods for seismic analysis of bridge structures.
Jun 03, 2017 sap 2000 tutorial, sap 2000 tutorial analysis of dynamic vehicle loading v12s. Seismic demands are computed by nonlinear static analysis of the structure subjected to. Keywords sap 2000, concrete girder bridge, dynamic analysis, moving loads introduction a bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose of providing passage over the obstacle. Modeling with concentrated nonlinearity lumped plasticity is a commonly used approach in models for deformation capacity estimates. Pushover analysis is a nonlinear, static structure analysis, which enables presenting structure behavior caused by different types of loads resulting from an earthquake.
International journal of earth sciences and engineering, 4, 684690. Check out this video on seismic design methods and see a demonstration of rm bridge. Inverted v braced building by using pushover analysis shown i n figure c. In general, the advanced program is required to perform nonlinear analyses, with the exception being. Learn about the sap2000 structural analysis and design program. Pushover analysis in sap2000 civil engineering downloads. Mar 11, 2014 seismic analysis is a subset of structural analysis and is the calculation of the response of a building or nonbuilding structure to earthquakes. Sap2000 manual sap2000 is a program developed by the company csi, computer and structures, inc. Using sap2000 for pushover analysis we will use the same frame elastic beams, just modify dead loads. Nonlinear static analysis pushover assumes that response is governed by a single mode of vibration, and that it is constant during the analysis distribution of lateral forces applied at storey masses. The objective of seismic resistant design is to have no structuralnonstructural damage in low magnitude earthquakes, limited and repairable damage in moderate earthquakes and life safety for extreme earthquakes.
Pushover analysis of bridges two matlab programs were developed to perform nonlinear static 2. Nonlinear analysis sap 2000 4 the hinges should be assigned at both the ends which means at the relative distance of 0 and 1 and form as shown in figure 7 will appear. An overview of the procedure for pushover analysis is given as follows. Pushover analysis first steps tutorials computers and. The paper i have taken reference for validation work was done in ansys. They got maximum base shear as 770 kn, which i am not getting. The computer program sap2000 and all associated documentation. A nonlinear analysis method for performance based seismic design. This tutorial was initially written for sap2000, though the general procedure also applies to csibridge. A nonlinear analysis method for performance based seismic. The pushover analysis is executed separately for the two. There are many different designs that all serve unique purposes and apply to. Csi analysis reference manual nonlinear static analysis static pushover analysis, page 394 habibullah, a.
Pushover analysis in sap2000 civil engineering community. Pushover analysis and seismic retrofitting using shear. The performance of modal pushover analysis mpa in predicting the inelastic seismic response of multi. American society of civil engineers, 2000, and atc40 applied technology council. Feb, 2016 the pushover analysis from basics presented by rahul leslie 41. Inclined tensile braced building by using pushover analysis shown in figure b. Create the computational model, without pushover data, using conventional modeling techniques. Aug 12, 2014 sap2000 is a program developed by the company csi, computer and structures, inc. Pushover analysis allows tracing the sequence of yielding and failure on member and structural level as well as the progress of overall capacity curve of the structure. Hinges may be defined manually or by using one of several default specifications which are available. Define properties and acceptance criteria for the pushover hinges. Desain konstruksi dengan sap 2000 csi analysis reference manual. As well as specific details on the use of sap2000 software for such.
The three software to be used in the pushover analyses are. Sap2000 tutorials training videos, manuals and model files. Seismic assessment of an rc building using pushover analysis. Seismic capacity assessment of existing rc buildings in the. Pushover analysis, base isolators, viscous dampers.