高强混凝土剪力墙屈服位移计算方法  

Yield Displacement Calculation Method of High-Strength Concrete Shear Wall

作　　者：赵花静[1,2] 梁兴文[1,2] 宋璨[1,2] 

机构地区：[1]西安建筑科技大学理学院,西安710055 [2]西安建筑科技大学土木工程学院,西安710055

出　　处：《土木建筑与环境工程》2014年第3期80-85,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金(81278402;51078305;50908187);长江学者和创新团队发展计划(PCSIRT)

摘　　要：考虑高强混凝土受压强度高等特点,在高强混凝土剪力墙截面刚达到屈服状态时,假定截面受压区混凝土压应力为线性分布,基于平截面假定,用弯矩曲率分析法得到了剪力墙截面屈服曲率公式。采用屈服曲率公式,对影响高强混凝土剪力墙屈服曲率的参数进行了分析。结果表明,除轴压比外,纵向受力钢筋屈服应变对屈服曲率影响最大;在轴压比较大时,剪力墙截面两端翼墙的影响也较大。通过对计算结果的回归分析,提出了考虑轴压比、纵向受力钢筋屈服应变和剪力墙截面两端翼墙面积影响的屈服曲率计算公式。提出了高强混凝土剪力墙顶点屈服位移的计算公式,公式的计算值与12个高强混凝土高悬臂墙顶点屈服位移的试验值比较吻合。简化公式也适用于普通混凝土剪力墙的屈服位移计算。It is assumed that distribution when the cross-s the plane section assumption curvature analysis method. are studied by using the yiel concrete compressive stress of the cross-section compression zone is linear ection of high-strength concrete shear wall reaches yield situation. Based on the yield curvature formula of shear wall section is obtained by using moment The parameters affecting yield curvature of high-strength concrete shear wall d curvature formula. The results show that longitudinal reinforcement yield strain is the most vital factor of the yield curvature in addition to axial load ratio. When axial load ratio is larger, both wing walls of shear wall section have larger impact. The yield curvature formula is presented, considering the impact of axial load ratio, boundary reinforcement yield stress and both ends of wing walls of shear wall section based on the regression analysis of calculation results. On this basis, the vertex yield displacement formula of high-strength concrete shear wall is proposed, and the calculation results of formula correspond well to the vertex yield displacement experimental values of the 12 high-strength concrete cantilever wall. The formula is also suited for the vertex yield displacement of comment concrete shear wall.

关 键 词：高强混凝土 剪力墙 屈服曲率 屈服位移 抗震性能设计 

分 类 号：TU356.1[建筑科学—结构工程]