Research on Hysteretic Behavior of Dual Steel Concrete Composite Shear Walls(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2015年04期
- Page:
- 39-45
- Research Field:
- Publishing date:
Info
- Title:
- Research on Hysteretic Behavior of Dual Steel Concrete Composite Shear Walls
- Author(s):
- MA Kai-ze; QUE Ang; LIU Bo-quan
- School of Civil Engineering, Chang’an University
- Keywords:
- dual steel concrete composite shear wall; quasi-static test; hysteretic behavior; fiber model; ductility factor
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to research the hysteretic behavior of dual steel concrete composite shear walls, the quasistatic tests of four specimens were carried out. The shearspan ratio of all specimens was 2.5. The failure mechanism and hysteretic behavior under lateral cyclic loading were investigated by changing the spaces of binding bars and stiffeners. Based on the seismic analysis software OpenSees, the fiber model method was used to establish numerical simulation model of dual steel concrete composite shear walls, and the nonlinear analysis under low cyclic loading was carried out. The results show that the failure patterns of the shear wall include the buckle of the steel tube and the crash of core concrete at the base of the specimens. Under the same condition of axial compression ratio, the specimens with stiffeners show better seismic performance than the ones with binding bars. Moreover, the deformation of the specimen is significantly improved when the spaces of stiffeners and binding bars decrease, and the specimens show better energy dissipation capacity. It makes no difference between the theoretical and experimental values of flexural loadbearing capacity and ductility coefficient, and the fiber model can better simulate the seismic performance of shear walls. With increase of the axial compression ratio, the deformation of the shear walls decreases, and the ultimate loadbearing capacity is improved. With increase of the concrete strength, the loadbearing capacities are improved, the deformation of the shear walls decreases. With increases of the steel thickness, the deformation and loadbearing capability of the shear walls are significantly improved.
Last Update: 2015-07-21