Papers by Keyword: Skeleton Curves

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Authors: Hai Tao Wan, Hua Yuan
Abstract: The software ABAQUS is used to perform the finite element simulation of a group of reinforced concrete beam tests. The load-displacement skeleton curves of the beams are obtained after the completion of the simulation. Test results and simulation results are compared, results showed that the finite element simulation can be more accurately simulate the test situation. Then, the software ABAQUS is also used to simulate different types of reinforced concrete frame beams, and access to load-displacement skeleton curves and moment – rotation curves of the beams. Reference to the advanced performance-based design method, the curve classified according to different factors. The performance parameters of beams are obtained from the curves. Performance parameters can provide quantitative reference index for performance evaluation of beam.
967
Authors: Xun Zhong Zhang, Ru Heng Wang, Wei Hu
Abstract: Through the ANSYS finite element method, the seismic performance of frame columns reinforced with wing walls has been analyzed, indicating that the wing wall reinforcement can effectively improve the lateral stiffness and remarkably increase the bearing capacity of columns. With the wing wall reinforcement, the envelop area of the column’s hysteresis curve increases, and the bearing capacity improves, however, the shrinking phenomena of the curve suggests that the ductility of the section reduces. When the centerline of the additional wing wall coincides with that of the original column, the hysteresis curve inclines to be full, thus advising overlapping the centerline of the wing wall with that of the original column.
1691
Authors: De Jian Yang, Zong Chen
Abstract: The structural system and seismic performance of the composite shear wall are analyzed based on the horizontal load model tests. The test models are three groups of combined shear walls with shear span of 1.5, including an ordinary shear wall, a shear wall with vertical steel plates and a shear wall with transverse steel plates. The finite element software ABAQUS is used to build the calculation model of the shear wall structure. And the analysis the influence of steel plates to bearing capacity, ductility, and stiffness of shear wall are carried out. The research results indicate that the combination shear wall has good seismic behaviors.
1506
Authors: Sheng Сai Li
Abstract: Pseudo dynamic test and pseudo static test were carried out on 1/2 scale model of light composite structure. By experimental research, hysteretic curves of base shear force and top displacement of the model structure were got, which come from various sections of pseudo dynamic test and pseudo static test, and through hysteretic curves of base shear force and top displacement of the model structure, skeleton curve of base shear force and top displacement of the model structure can be got. Outside line of all skeleton curves was skeleton curve of the light composite structure model. By analyzing and simplifying of the skeleton curve, finally restoring force model of the model structure was obtained, so reasonable dynamic analysis method of seismic design of the model structure can be offered. Research shows that as peak acceleration of inputting seismic wave continuously grows, especially when the peak acceleration reaching 800 gal, after the model structure reached plastic stage and in the stage of pseudo static test, the hysteretic curves become fuller and fuller, which shows that, with continuous emerging and propagation of crack, the structural rigidity losses gradually, and its energy dissipation capacity increases gradually. So earthquake fortification level of not collapse when hit by rarely occurred earthquake will achieve.
130
Authors: Chun Ming Wei, De Long Shao, Hui Su, Qiang Zhao
Abstract: To investigate the effect of the horizontal construction joint on seismic behavior of the exterior joint of the reinforced concrete frame structure, the numerical simulation of the exterior joint with the construction joint under the low cyclic loading was done. The experimental results and the numerical simulation values were compared. Seen from the ultimate load, the experiment value is 158.7kN, the simulation value is 170kN, the relative error is about 11%.Further analysis of the exterior joint of reinforced concrete frame skeleton properties, the feasibility of applying unit construction joints is verified.
172
Authors: Dong Fang Zhang, Jun Hai Zhao, Yu Fen Zhang, Qian Zhu
Abstract: Abstract:According to our team experimental study on the joints for the Multibarrel tube-confined concrete column and the reinforced concrete ring beam, The software ANSYS of finite element is used to simulate the behavior of connections in this paper. The simulated hysteretic curves and skeleton curves are compared with the experimental data and good agreement can be observed. Moreover, parametric studied have been carried out to investigate the influences of anchorage length of vertical steel bars for the nodes area, the strength of the concrete for the nodes area, the concrete strength of the frame beam, and the longitudinal reinforcement ratio of the frame beam on the skeleton curves.
658
Authors: Hai Tao Wan, Chao Yan
Abstract: Reinforced concrete (RC) frame structure is one type of building structure which is widely used in China. Damage of some reinforced concrete frame structures under the earthquake is caused by the damage of beams and columns, so beams and columns are essential seismic members. However, the test datum are not enough to study the performance of RC beams and columns , Therefore, Finite element simulation of RC beams and columns is performed by software ABAQUS in the paper. Through comparing with the finite element simulation and the test of load - displacement skeleton curve, failure mode and steel bar strain, the result shows that the finite element simulation can more accurately simulate the situation of the test and verifies the finite element simulation is the most important research tool besides test.
3529
Authors: Hai Tao Wan, Peng Li
Abstract: Reinforced concrete (RC) shear wall component is a very important lateral force-resisting member which is widely used in China. Its seismic behavior has a great impact on the seismic performance of the overall structure. Damage of some RC shear wall structures under the earthquake is caused by the damage of shear wall components, So shear wall components are an essential seismic members. However, the test datum are not enough to study the performance of RC shear wall components, Therefore, Finite element simulation of RC shear wall components is performed by software ABAQUS in the paper. Through comparing with the finite element simulation and the test of load - displacement skeleton curve, failure mode and steel bar strain, the result shows that the finite element simulation can more accurately simulate the situation of the test, verifying the finite element simulation is the most important research tool besides test.
3594
Authors: Yang Bing Liu, Fang Chen, Jing Bo Liu
Abstract: In order to model the elasto-plastic behavior of steel-concrete beams in high-rise buildings correctly and conveniently, plastic hinge method is used. Based on experimental and theoretical research on composite beams, the trilinear moment-curvature skeleton curve of steel-concrete composite beams is amended by numerical simulation and theoretical analysis. And the 4 poly-line moment-curvature skeleton curve model is suggested for elasto-plastic analysis of steel-concrete composite beams. The elastic-plastic model is then used for real composite beams under monotonic load experimental analysis to verify its precision. The suggested model can lay a foundation for the dynamic analysis under strong earthquake for the globe steel-concrete composite structures.
861
Authors: Shan Suo Zheng, Yue Heng Yan, Qing Lin Tao, Wen Yong Li
Abstract: Based on the experiments of a reinforced concrete frame column, 5 new members with different volumetric percentage of stirrups which are applied with constant axial load and horizontal low-frequency cyclic load are analyzed with ABAQUS. This paper aims to study the relationship between volume-stirrup ratio and seismic behavior of reinforced concrete column. By analyzing skeleton curve and hysteretic curve of members, the results show that, if stirrups are reasonably arranged and the volume-stirrup ratio is larger enough, the good ductility, carrying capacity, energy dissipation capacity, and seismic behavior still be obtained with high axial compression ratio.
2046
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