钢筋混凝土纯扭构件的非线性有限元分析  

Nonlinear Finite Element Analysis on Pure Torsion Members of Reinforced Concrete

作　　者：刘宝兴[1] 邵永健[1] 杨文成[1] 

机构地区：[1]苏州科技学院,215011

出　　处：《混凝土与水泥制品》2014年第1期70-73,共4页China Concrete and Cement Products

摘　　要：为研究钢筋混凝土构件在扭矩作用下的受力性能,利用有限元软件ABAQUS建立了3个钢筋混凝土纯扭构件的有限元模型,分别以截面尺寸和配箍率为研究参数,对其受力全过程进行非线性数值模拟。有限元计算结果表明:截面尺寸和配箍率是影响钢筋混凝土构件抗扭承载力的重要因素,增大截面尺寸可提高构件的开裂扭矩和极限扭矩,增加配箍率可延缓裂缝的发展,提高构件的极限扭矩;模拟得到的开裂扭矩、极限扭矩与GB 50010—2010《混凝土结构设计规范》的计算公式得出的计算值吻合较好。In order to study the torsional behavior of reinforced concrete members, three kinds of finite element mod- els with different parameters （including the sectional dimension and stirrup reinforcement ratio） are established to simulate the pure torsion of the reinforced concrete members by nonlinear finite element analysis software of ABAQUS. The results show that the section dimension and stirrup reinforcement ratio are the key factors for the torsional capacity of reinforced concrete members. The cracking torque and ultimate torque of the members can be improved with the increasing of section dimension. The development of cracks can be delayed and the ultimate torque of the members can be improved with the increasing of stirrup reinforcement ratio. The cracking torque and ultimate torque of simulation are in good agreement with the calculation values got by the formulae of GB 50010--2010＂code for design of concrete structures＂.

关 键 词：钢筋混凝土 纯扭 有限元 非线性分析 

分 类 号：TU375[建筑科学—结构工程]