钢筋混凝土十字形柱框架节点裂缝开展数值模拟研究  

Numerical simulation study on crack growth of reinforced concrete cross-shaped column frame joint

作　　者：柳阳[1] 刘洪兵[1] 任兴民[1] Liu Yang;Liu Hongbing;Ren Xingmin(School of Mechanics and Civil & Architecture,Northwestern Polytechnical University,Xi'an 710129,China)

机构地区：[1]西北工业大学力学与土木建筑学院

出　　处：《建筑科学》2019年第5期14-21,共8页Building Science

摘　　要：基于非线性本构关系的整体式有限元模型,采用弥散裂缝的方法,研究混凝土十字形框架节点在低周反复荷载以及单调荷载作用下的力学性能,展现节点裂缝形成与发展的过程、荷载作用下的应力分布;对十字形柱节点的破坏形态进行分析。结果表明,十字形柱框架可以满足“强柱弱梁”设计原则。Based on the integral finite element model of nonlinear constitutive relation,and with the method of smeared cracks,the mechanical properties of concrete cross-shaped frame joint under low cyclic loading and monotonic loading are studied.The formation and development of cracks in joint are demonstrated,the stress distribution under loading is revealed,and the damage form of the cross-shaped column joint is analyzed.The results show that the cross-shaped column frame can meet the design principle of "strong column and weak beam".

关 键 词：十字形柱 有限元分析 非线性本构关系 整体式模型 

分 类 号：TU375.4[建筑科学—结构工程]