Sep 11, 2019 pushover analysis of a reinforced concrete frame structure by atena. The numerical simulation of the seismic performance of the rc frame structure incorporating different levels of rebar corrosion was conducted using pushover analysis method. In seismic analysis, the earthquake effect is displayed through the acceleration of the underlying soil in the form of time acceleration or in the form of an elastic spectrum of the soil acceleration response. The softening model of concrete as well as the elastoplastic model of reinforcement was considered in the analysis associated with. Seismic performance of a corroded reinforce concrete frame structure using pushover method. At the same time, it can also provide reference about the seismic per. Seismic performance based design of reinforced concrete. Traditionally, ls capacities are defined according to design code provisions or using deterministic pushover analysis without. Pushover analysis for reinforced concrete portal frames. In this approach, the inelastic force deformation of hinges could be defined as either the nonlinear properties suggested in fema. Frames, nonlinear static analysis, pushover analysis. A journal paper kadid and boumrkik, 2008 reported pushover analysis of reinforced concrete frame structures and provided information to evaluate the performance of framed buildings under future. Bolea, ovidiu, the seismic behaviour of reinforced concrete frame structures with infill masonry in the bucharest area. Pdf pushover analysis of existing reinforced concrete.
Pushover analysis of reinforced concrete 875 view finite element modeling of reinforced concrete structures 1,242 view seismic design of reinforced concrete mat 1,093 view pushover analysis of plan irregular masonry build 2,845 view shear strength of concrete beams reinforced with frp b 1,027 view. After designing and detailing the reinforced concrete frame structures, a nonlinear pushover analysis is carried out for evaluating the structural seismic response. Finite element analysis of load bearing capacity of a. Pushover analysis of reinforced concrete buildings. Overall pushover analysis can be unconservative in estimating seismic demands of structures and it may lead to unsafe design. Pdf nonlinear analysis of reinforced concrete frame. Performancebased pushover analysis for reinforced concrete frame. The seismic displacement response of the rc frameshear wall building is obtained using the 3d pushover analysis. The pushover analysis has been carried out using sap 2000, product of computers and structures international. Reinforced concrete frame pushover analysis openseeswiki. This paper focused on the pushover analysis of a frame structure infilled with lowrise reinforced concrete rc wall.
Rc frame, pushover analysis, fiber element mesh, probabilistic analysis, probabilistic distribution, montecarlo simulation, yields base shear, histogram. Seismic assessment of reinforced concrete frameworks through. Nonlinear pushover analysis of seismic load on multistorey reinforced concrete hospital building abstract nonlinear pushover analysis is a nonlinear static procedure which is a very useful tool to evaluate the seismic performance of a highrise building. Pushover analysis of reinforced concrete frame structure using sap 2000 685 international journal of earth sciences and engineering issn 09745904, volume 04, no 06 spl, october 2011, pp. Evaluation of pushover analysis procedures for frame structures oguz, sermin m. Overall pushover analysis can be unconservative in estimating seismic demands of structures and it. Seismic assessment of reinforced concrete frameworks. Due to its simplicity, lumped plasticity approach is usually used for nonlinear characterization of reinforced concrete rc members in pushover analysis. This is especially true for structures built according to older building code provisions and thus possessing nonductile reinforcement details. Each concrete strength was used withthe four different reinforced concrete building heights 5. Introduction one of the emerging fields in seismic design of structures is the performance based design. Effects of plastic hinge properties in nonlinear analysis of. Seismic evaluation of reinforced concrete frames in the.
The main components of the analysis are discussed in detail followed by the formulation. 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. Marefat, effects of joint flexibility on lateral response of reinforced concrete frames. Pdf on mar, 2020, andrew john pierre and others published seismic performance of reinforced concrete structures with pushover analysis find, read and cite all the research you need on. Pushover analysis of reinforced concrete structures. This example demonstrates the use of tcl programming in order to perform the nonlinear analysis. Pushover analysis of retrofitted reinforced concrete. Automated nonlinear pushover analyses of reinforced concrete structures thesis directed by prof. For more reasonable and convenient evaluating structure seismic performance,static elastoplastic analysis of reinforced concrete frame is presented by pushover with different lateral load distributing modes including uniform distribution, inverted triangle distribution and selfadaption distribution adopted, custom plastic hinge, bending momentcurvity relation and bending momentaxial force.
Effect of elaborate plastic hinge definition on the. Pushover analysis is a staticnonlinear analysis method 20. Pdf estimating uncertainty in limit state capacities for. This technical reference covers the pushover analysis of reinforced concrete and steel bridges with confined and unconfined concrete column members of either circular. Each concrete strength was used withthe four different reinforced concrete building heights 5, 15, 20 and 30 stories. Pushover analysis of rc frame for effective column design. Pdf seismic performance of reinforced concrete structures. Victor saouma abstract the purpose of this thesis is to develop a guide for the means and methods entailed in a pushover analysis. Seismic design aids for nonlinear pushover analysis of. Pushover analysis on the failure mechanism of reinforced. According to the current indian practice, designers have two options for the seismic design of reinforced concrete frames is 18932000 part 1. The pushover analysis method has been adopted by atc40 1996, fema273, 274 1997 and fema356 2000. They discussed nonlinear pushover analysis as a key component for the nonlinear dynamic analysis and overall retro.
Comparison of seismic responses of the structure in terms of base shear, time period and displacement has been done by. Pushover curves for reinforced concrete frame six different concrete strengths were used in the analysis 4000 psi, 3500 psi, 3000 psi. An analytical procedure is presented for the nonlinear analysis of reinforced concrete frame structures consisting of beams, columns, and shear walls under monotonic and pushover loads. The procedure is capable of accurately representing shearrelated mechanisms coupled with flexural and. The softening model of concrete as well as the elastoplastic model of reinforcement was considered in the analysis associated with the equilibrium and compatibility conditions. Influences on reinforced concrete frame in a nonlinear static, the pushover analysis determines the dependency between total shear force and horizontal displacement. Seismic performance of a corroded reinforce concrete frame.
Seismic performance of reinforced concrete structures with pushover analysis article pdf available in iop conference series earth and environmental science 426. The pushover analysis consists of the application of gravity loads and a representative lateral load pattern. Evaluation of modal and traditional pushover analyses in. Figure 6 shows the horizontal displacement of load forces due to the forces obtained in the calculation. The presentation will discuss nonlinear structural analysis of existing buildings. Masonry infill s ha ve been considered as non structural membe rs during this entire study. Values of plastic hinges were calculated by section builder software, which based on constitutive relations of material and the section forms, then the data was written into corresponding components in the model to carry out pushover analysis. The 3d static pushover analysis was carried out using sap2000 incorporating inelastic material behavior for concrete and steel. Lateral system of the building consists of concrete shear walls. The response of four systems with the same geometry, but.
We have investigated the effect of the layout of masonry infill panels over the elevation of masonry in filled rc frames on the seismic performance and potential seismic damage of the frame under strong. A case study international journal of advanced technology in engineering and science volume no. Automated nonlinear pushover analyses of reinforced concrete. Pushover analysis is a simple method for the nonlinear. The procedure is capable of accurately representing shearrelated mechanisms coupled with flexural and axial behaviors. Pushover analysis of a reinforced concrete frame structure by.
Seismic evaluation of multistorey rc frame using modal. For this study pushover analysis was not effective in capturing the seismic demands imposed by both a farfield and a nearfault ground motion. Comparison of seismic responses of the structure in terms of base shear, time period and displacement has been done by performing nonlinear static pushover analysis. Seismic design aids for nonlinear pushover analysis of reinforced concrete and steel bridges fills the need for a complete reference on pushover analysis for practicing engineers.
The main output of a pushover analysis is in terms of response demand versus capacity. An analytical procedure is presented for the nonlinear analysis of reinforced concrete frame structur es consisting of beams, columns, and shear walls under monotonic and pushover loads. The degradation characteristics of the seismic performance of the corroded structure under. Pushover analysis of a 19 story concrete shear wall building. Apr, 2016 the presentation will discuss nonlinear structural analysis of existing buildings. Pushover analysis of a reinforced concrete frame structure. Seismic performance analysis of frp reinforced concrete frame. The pushover analysis of the frame with steel obtained from the tensile tests, indicates that, although the building is able to withstand the level of design earthquake, the examination of test results shows that there isnt yet a standard and a control over the steel used for reinforced concrete structures. Existing reinforced concrete frame structure behavior will be analyzed through three typical pushover procedure.
Effects of plastic hinge properties in nonlinear analysis. A study on pushover analysis of frame structure infilled with. In reinforced concrete rc structures, the loss of gravity loadcarrying capacity in columns has been observed to trigger a chain of collapse events. If the demand curve intersects the capacity envelope near the elastic range, then the structure has a good resistance. A study on pushover analysis of frame structure infilled. Seismic performance of a corroded reinforce concrete. Based on the experimental study for seismic performance of frp reinforced concrete beamcolumn joints, twostorey twospan plane frames were taken for examples, in which the static elastoplastic analysis the pushover method was carried on the joints of the frp strengthened concrete. Introduction moment resisting frames are the most commonly used framing system for reinforced concrete structures. Beam and column elements are modeled as nonlinear frame elements with lumped plasticity by defining plastic hinges at both ends of the beams and columns.
During pushover analysis, a structure is subjected to lateral load which continuously increases through elastic and inelastic behaviours until the ultimate condition is reached. Since most current seismic capacity evaluations of reinforced concrete rc frame structures are implemented by either static pushover analysis pa or dynamic time history analysis, with diverse settings of the plastic hinges phs on such main structural components as columns, beams and walls, the complex behavior of shear failure at beamcolumn joints bcjs during major earthquakes is. Pushover analysis of reinforced concrete structures with coupled shear wall and moment frame yungon kim1. Seismic performance analysis of frp reinforced concrete. Introduction recent earthquakes in which many concrete structures have been severely damaged or collapsed, have indicated the need for evaluating the seismic adequacy of existing buildings.
Automated nonlinear pushover analyses of reinforced. In this book, nonlinear pushover analysis has been used to evaluate the seismic performance of reinforced concrete buildings. Nonlinear static pushover analysis of an eight story rc. A large number of multistorey reinforced concrete rc framed building structures in urban india are constructed with masonry in fills for architectural, aesthetic or economic reasons.
Pushover analysis of reinforced concrete structures with. In seismic fragility and risk analysis, the definition of structural limit state ls capacities is of crucial importance. A reinforced concrete frame model was designed by pkpm software and then a pushover analysis is performed in this paper. Nonlinear analysis, material nonlinearity, geometric nonlinearity, reinforced concrete, newton raphson method, portal frame, pushover analysis i. The interior frames of 4 and 7story buildings were considered in pushover analyses to represent low and mediumrise reinforced concrete rc buildings for study. Pushover analysis of reinforced concrete frames considering. Pushover, analysis, retrofitted reinforced concrete, buildings, using, sap 1. Beam and column elements are modeled as nonlinear frame elements with lumped plasticity by. In this example the reinforced concrete portal frame which has undergone the gravity load analysis is now be subjected to a pushover analysis. Nonlinear response of reinforced concrete structures is sensitive to the material properties of the constituents. Sap2000 software was used to build the finite element model of a sixstoreythreespan reinforced concrete rc frame structure. Pushover analysis of multistoried building semantic scholar.