基于ABAQUS的倒L形型钢混凝土梁受扭性能研究  

Research on Torsional Behavior of Inverted L-Shaped Steel Reinforced Concrete Beams Based on ABAQUS

作　　者：严舒云 邵永健[1] 谢强 YAN Shu-yun;SHAO Yong-jian;XIE Qiang(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《混凝土与水泥制品》2023年第4期68-73,80,共7页China Concrete and Cement Products

基　　金：江苏省研究生科研创新计划项目(KYCX21_3032);江苏省研究生实践创新计划项目(SJCX21_1421)。

摘　　要：为研究倒L形型钢混凝土梁的受扭性能,结合相关试验研究,采用ABAQUS有限元软件对5个试件作了建模分析,研究了混凝土强度、箍筋间距、纵筋配筋率、型钢型号、型钢与混凝土黏结滑移建模方法等对倒L形梁抗扭性能的影响。结果表明:混凝土强度等级对试件的极限承载力影响较大,但对试件延性和耗能能力的影响较小;纵筋配筋率对试件抗扭能力几乎没有影响;减小箍筋间距、提高型钢型号可以提升试件的延性和承载力;型钢-混凝土界面采用内聚力模型较摩擦接触模型的精度更高,但是计算成本相对较大,参数获取复杂。In order to study the mechanical properties of inverted L-shaped steel reinforced concrete beams,based on the experiments research of five inverted L-shaped steel reinforced concrete beams,the ABAQUS software was used to model and analyze the five specimens.The effects of concrete strength,stirrup spacing,longitudinal reinforcement ratio,section steel type,and modeling method of bond slip between section steel and concrete on the torsional behavior of inverted L-shaped beams were analyzed.The results show that the strength grade of concrete has a great influence on the ultimate bearing capacity of the specimen,but has a small impact on the ductility and energy consumption capacity of the specimen.The ratio of longitudinal reinforcement has little effect on the torsion resistance of the specimen.The ductility and bearing capacity of the specimen can be improved by reducing the number of stirrups and increasing the type of section steel.The cohesion model adopted for the steel-concrete interface is more accurate than the friction contact model,but the calculation cost is large and the parameter acquisition is complex.

关 键 词：倒L形型钢混凝土梁 有限元分析 受扭性能 拓展参数分析 

分 类 号：TU528.7[建筑科学—建筑技术科学]