Elastic-plastic Analysis Of T-shaped Short-leg Shear Wall

Short-limbed wall(SLW)is defined as the shear wall with a ratio of section depth to width(RDW) being 5~8.Usually,the section width is 200-250mm,and the depth is between l000 and 2500mm.It is an integration structure style between erose-section-column frame and convention shear wall structure. This kind of structure form bases on convention shear wall structure and draws on the advantage of framework. So it has become the most important structure form for residence projects with 20-30 stories. Now basic dynamics capability of this structure is realized little,and computing analysis method is not full-blown to this structure. So, these factors affect this structural generalizing and application. We must develop deep meticulous study.Because of lack of fond in research,these structure systems cannot be well used in fact. Now people are adopting the simulation test to resolve this question. And all l: 1scale specimen can be employed in simulation test that can avoid appearing the'distortion'in the scale-down test. In simulation test, the same test can be made times without number and results of test are more full-scale and exact.According to the finite element theory and the computer simulative principle basic mentality, using finite element analysis software ANSYS, the load capacity, deformation capacity and ductility of T-shaped short-leg shear wall are tested by push-over simulative test, and carried on the optimized analysis to its influential factors. First 3D unit SOLID65and link8 is used in ANSYS to establish the finite element analysis model of T-shaped short-leg shear wall. Then changing some influential factors such as concrete strength rank,reinforcement ratio,ratio of axial compressive force, the simulative testis carried on the T-shaped short-leg shear wall. Though grouping comparison method the paper analyzes the influence of each factor to the load capacity, deformation capacity and ductility, as well as has the reasons why it leads to the influence, then carries on the optimized analysis, discovers the optimized value of each influential factor, and does the analysis to the broken process of T-shaped short-leg shear wall. The simulative test real reflects the response of T-shaped short-leg shear wall in the axial compression and gradually increasing horizontal side force together. The test result indicated that through changing concrete strength rank,reinforcement ratio,ratio of axial compressive force can enhance the yield and limit load of the specimen, but should synthesize consider the relations among they and deformation capacity and ductility...