不同影响因素下矩形型钢混凝土复合受扭构件抗扭性能研究  

Study on torsional performance of rectangular steel reinforced concrete subjected to complex torsion under different influencing factors

作　　者：张保涛 刘继明[1] 吴成龙[1] 李得生 Zhang Baotao;Liu Jiming;Wu Chenglong;Li Desheng(School of Civil Engineering, Qingdao Technological University, Qingdao 266000 ,Shandon)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《工程建设》2018年第6期11-15,共5页Engineering Construction

摘　　要：为研究矩形型钢混凝土复合受扭构件的抗扭性能,以轴压比、配筋率、混凝土强度、型钢尺寸为影响因素,通过ABAQUS对6根构件进行有限元分析,发现合理增大构件的轴压比能够显著提高型钢混凝土构件开裂前的抗扭性能;提高混凝土的强度能够提高构件的开裂扭矩,但对构件开裂后的抗扭性能影响极小;增加构件的配筋率会使构件开裂后的抗扭刚度显著提高;合理增大含钢率能够显著提高构件的开裂扭矩与开裂后的抗扭刚度。To study the torsional performance of rectangular SRC composite torsion components,the finite element analyses of 6 components are carried out by ABAQUS with the influence factors of axial compression ratio,reinforcement ratio,concrete strength and steel size.,and it is found that reasonable increase of axial compression ratio can remarkably improve the torsion resistance of SRC members before cracking. Improving the strength of concrete can increase the cracking torque of the component,but it has little effect on the torsion resistance of the component after cracking. Increasing the reinforcement ratio of the members can increase the torsional stiffness of the members after cracking. Reasonable increase of steel ratio can significantly improve the cracking torque and the torsional stiffness of the components after cracking.

关 键 词：型钢混凝土构件 抗扭刚度 不同影响因素 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程]