T型钢-混凝土组合梁试验研究与有限元分析  

Experimental Research and Finite Element Analysis of T-shaped Steel-concrete Composite Beam

作　　者：于瀚淞 王小平[1,2] 李涛 王乾坤[1,2] YU Han-song;WANG Xiao-ping;LI Tao;WANG Qian-kun(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;Hainan Research Institute,Wuhan University of Technology,Sanya 572024,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉理工大学海南研究院,三亚572024

出　　处：《武汉理工大学学报》2023年第10期84-90,共7页Journal of Wuhan University of Technology

基　　金：海南省重点研发计划(ZDYF2021GXJS211);海南省重大科技计划(ZDKJ2021024);国家大学生创新创业训练计划(S202110497256);武汉市城建局科技计划(202141)。

摘　　要：提出一种T型钢-混凝土组合梁,以单、双向T型钢梁(TSB-1、TSB-2)和单、双向T型钢-混凝土组合梁(TCB-1、TCB-2)为对象,通过试验和有限元分析研究了其极限承载力和弹性刚度。结果表明,TSB-2的极限承载力是TSB-1的1.81倍,弹性刚度比值为2.29;TCB-2的极限承载力是TCB-1的2.03倍,弹性刚度比值为2.21,说明双向T型钢梁或T型钢-混凝土组合梁都比单向更有优势。TCB-1与TSB-1的极限承载力和弹性刚度的比值分别为4.40和10.18,TCB-2与TSB-2的极限承载力和弹性刚度的比值分别为4.94和9.82。T型钢-混凝土组合梁与原T型钢梁相比,其极限承载力和弹性刚度均得到了极大的提升。TSB-1、TSB-2、TCB-1和TCB-2的弹性刚度、极限承载力的有限元分析与试验结果较为接近,证明了有限元建模方法的正确性和合理性。A T-shaped steel-concrete composite beam was proposed,which took single and bidirectional T-shaped steel beams(TSB-1,TSB-2)and single and bidirectional T-shaped steel-concrete composite beams(TCB-1,TCB-2)as the objects.Its ultimate bearing capacity and elastic stiffness were studied through experiments and finite element analysis.The results show that,the ultimate bearing capacity of TSB-2 is 1.81 times that of TSB-1,and the elastic stiffness ratio is 2.29.The ultimate bearing capacity of TCB-2 is 2.03 times that of TCB-1,and the elastic stiffness ratio is 2.21.Both bidirectional T-shaped steel beams or T-shaped steel-concrete composite beams have more advantages than single beams.The ratio of ultimate bearing capacity and elastic stiffness between TCB-1 and TSB-1 is 4.40 and 10.18,respectively,and the ratio of ultimate bearing capacity and elastic stiffness between TCB-2 and TSB-2 is 4.94 and 9.82,respectively.Compared with the original T-shaped steel beam,the T-shaped steel concrete composite beam has greatly improved its ultimate bearing capacity and elastic stiffness.The finite element analysis of the elastic stiffness and ultimate bearing capacity of TSB-1,TSB-2,TCB-1,and TCB-2 is relatively close to the experimental results,indicating the correctness and rationality of the finite element modeling method.

关 键 词：T型钢梁 T型钢-混凝土组合梁 承载力试验 极限承载力 弹性刚度 有限元分析 

分 类 号：TU398[建筑科学—结构工程]