Nonlinear Finite Element Analysis of Mechanical Performance of Reinforced Concrete Short-Limb Shear Wall

On the basis of test, nonlinear finite element analysis of reinforcedconcrete (R. C) short-limb shear walls under monotonic horizontal load are carried out by ANSYSprogram in order to understand the evolution of cracking, deformation and failure course of thespecimens. At the same time, the results of numerical calculation are compared with the results oftest. The results indicate that, under monotonic horizontal load the failures of the specimens withflange wall and without flange wall all occur at the intersections of lintel bottom and limb ofwall, the failures also occur at the bottom of limb; the load-displacement curve of wall withoutflange is steeper than that of wall with flange, and the ductility is worse than that of wall withflange; the results, such as cracking, deformation, yield load and so on of finite element analysisagree well with the results of test. These results provide theoretical basis of study andapplication of R. C short-limb shear wall.

高厚比变化时十字型短肢剪力墙弹塑性分析(英文)

利用ANSYS对七个十字型钢筋混凝土短肢剪力墙进行单调荷载作用下的弹塑性分析,比较了剪力墙截面高厚比变化时,剪力墙的承载能力、刚度和延性变化情况,分析结果表明,随高厚比的提高,结构的承载力有所提高,而延性先增加后降低,结构设计中应充分考虑该因素的影响.当剪力墙高厚比为6.6时,承载能力及变形能力均较好,屈服荷载与极限荷载提高显著,延性系数达到最大,为实际工程的截面设计提供了有意义的依据.

任意截面受弯极限承载力的无网格计算方法

为了分析短肢剪力墙的双向偏压正截面承载力,本文编写了基于插值原理的双向偏心受压正截面承载力分析程序.程序计算混凝土的内力完全按数学公式给出积分区域的精确解,避免了划分网格方法造成的误差.程序的计算结果与试验结果符合良好,为类似程序开发提供一条新的解决思路.利用程序得出的短肢剪力墙双向偏压N-M相关曲面,并发现曲面上的等轴力线和异形柱类似.利用本程序可以全面把握短肢剪力墙的双向偏心受压正截面承载力,能满足工程设计的要求.