摘要
在预制钢筋混凝土剪力墙中采用型钢边缘约束构件,一方面提高了墙体的抗震性能,另一方面利用型钢作为上下层墙体之间的连接便于现场施工。首先介绍了新型墙体的抗震试验,然后建立非线性有限元模型模拟了试验构件在轴压和水平循环往复荷载下的力学行为,再现了构件损伤破坏的全过程,最后进行参数分析研究了型钢面积率对构件整体性能的影响。分析结果表明,带型钢边缘约束构件的预制钢筋混凝土墙片的承载力、延性及耗能能力均是普通钢筋混凝土剪力墙的1.5倍,且承载力和延性与型钢板厚度成正比,但增加型钢板厚对构件整体耗能能力提高不大,因此在设计时需综合考虑承载能力和耗能能力的要求选择合适的板厚。
Shaped-steel boundary constraint components in precast RC panels not only improve the seismic performance of the panel, but also bring convenience for site construction of RC wall structures. This paper firstly introduces the seismic test of two pieces of RC panels which are loaded with constant axial compression and cyclic horizontal displacement loading. Nonlinear finite element models were employed to simulate the mechanical behavior of the panels, by which the damage process is well reproduced. Finally, parametric analysis was carried out to study the effect of the steel area ratio on the overall behavior of the panels. The result demonstrates that the bearing capacity, ductility and energy-dissipating capacity of precast RC panels with shaped-steel boundary constraint components are 1.5 times the traditional RC walls. The bearing capacity or ductility is proportional to the thickness of shaped-steel. However, the influence on the energy dissipation capacity is not pronounced. Therefore, it should be comprehensively considered to balance the bearing capacity and energy-dissipating capacity.
出处
《世界地震工程》
CSCD
北大核心
2014年第3期93-101,共9页
World Earthquake Engineering
基金
地震行业科研专项经费(201108006)
