带斜筋单排配筋L形截面剪力墙的非工程方向抗震性能

Seismic Performance of L-Shaped Shear Wall with Single Row of Steel Bars and Inclined Reinforcements Along Non-Engineering-Axis Direction

带斜筋单排配筋混凝土剪力墙结构是为取代粘土砖多层住宅结构而发展起来的一种新型多层混凝土结构,其经济性合理,抗震性能优于传统的砌体结构。为进一步充分了解其抗震性能,开展该新型结构体系中"L"形截面剪力墙的非工程轴方向抗震性能试验研究。进行1个单排配筋混凝土"L"形截面剪力墙和1个带斜筋的单排配筋混凝土"L"形截面剪力墙低周反复荷载试验,对比分析其破坏特征、滞回特性、耗能能力、承载力、延性、刚度,并利用ABAQUS软件进行非线性有限元分析,探究斜筋对其抗震性能的影响。研究结果表明,在非工程轴方向,带斜筋单排配筋"L"形截面混凝土剪力墙的抗震性能优于不带斜筋的剪力墙。

To substitute the multi-storey brick residential structure,a new concrete shear wall structure with single row of steel bars and inclined reinforcements was proposed.It has proved to be more economical and shows better seismic behavior than traditional masonry structures by some tests.In order to fully understand its seismic performance,a cycle-load test of L-shaped shear walls along non-engineering-axis direction were carried out,including one L-shaped shear wall with single row of steel bars and another shear wall with single row of steel bars and inclined reinforcements.A comparative analysis of their failure characteristics,hysteretic property,energy dissipation,load-bearing capacity,ductility and stiffness was made.On the basis of the test,a finite element analysis to investigate the mechanical behavior of the test specimens along non-engineering-axis direction was conducted by using ABAQUS software.The results show that the inclined reinforcements can improve the seismic performance of L-shaped shear wall at non-engineering-axis direction.Due to the seismic performance of the shear wall with inclined reinforcements being better than that of the shear wall without inclined reinforcements,it can more easily meet the requirements for seismic performance of multi-story residential structure design.