保证变形能力的钢筋混凝土低矮剪力墙抗剪承载力计算  

Shear Capacity Equations of Low Aspect-ratio Reinforced Concrete Walls Satisfying Deformation Requirements

作　　者：刘建 陈晓磊 Liu Jian;Chen Xiaolei(MCC Construction Engineering Group Co.Ltd.,Chongqing 400080 China)

机构地区：[1]中冶建工集团有限公司,重庆400080

出　　处：《特种结构》2020年第6期1-8,共8页Special Structures

基　　金：重庆市科委创新与应用发展专项(cstc2019jscxmsxmX0053);重庆市建设科技计划项目(2018-0558)。

摘　　要：钢筋混凝土低矮剪力墙由于具有整体性好、侧向刚度大、承载力高等优点而被广泛用于实际工程,许多学者对其抗剪承载能力进行研究并提出了相关计算公式,且被用于相关设计规范并取得了良好效果。除抗剪承载力计算外,构件变形能力的设计同样是当代抗震设计中不可缺少的部分,然而上述公式未将其因素考虑到公式计算中。为此本文将对五组应用较为广泛的低矮剪力墙抗剪承载力计算公式从计算误差及保证变形能力的角度进行性能评估,并在评估结果的基础上选出性能最优公式并进行改进从而给出保证变形能力的抗剪承载力计算公式。Low aspect-ratio reinforced concrete walls are widely used in low-rise buildings due to their good integrity performance large lateral stiffness and high load capacity.Many scholars have studied its shear capacity and proposed calculation formulas which have been used in some related design codes with good results.However deformation capacity is also a key factor in seismic design and those equations do not take the deformation factor into account.In this paper five groups of widely used formulas for calculating the shear capacity of low aspect-ratio reinforced concrete walls are evaluated from the perspective of calculation errors and deformation capacity.Based on the evaluation results the optimal shear capacity formula is selected and improved to satisfy the deformation requirements.

关 键 词：抗剪承载力公式 低矮剪力墙 变形能力 钢筋混凝土 

分 类 号：TU375[建筑科学—结构工程]