组合结构螺栓连接件初始弹性行为研究  

STUDY ON INITIAL ELASTIC BEHAVIOR OF BOLTED SHEAR CONNECTORS IN COMPOSITE STRUCTURES

作　　者：曹佃凯 魏东 高照 杨国涛 CAO Diankai;WEI Dong;GAO Zhao;YANG Guotao(School of Civil Engineering,Qingdao University of Technology,ShandongQingdao 266033,China;Shandong High Speed Engineering Construction Croup Co.,Ltd.,Jinan 250014,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]山东高速工程建设集团有限公司,济南250014

出　　处：《低温建筑技术》2021年第8期66-70,共5页Low Temperature Architecture Technology

摘　　要：采用通用有限元分析软件ABAQUS对钢和混凝土组合结构摩擦型高强螺栓连接件初始弹性行为进行分析,有限元模型不考虑钢梁、混凝土板、螺栓连接件等材料非线性,并通过已有的试验结果进行验证。通过已验证的有限元模型,分析比较螺栓、钢梁和混凝土等参数变化对初始弹性刚度的影响,并对抗剪模型和剪拉模型两种工况下的不同向初始弹性行为进行分析。研究结果表明,螺栓直径、混凝土弹性模量以及螺栓预紧力对螺栓连接件的初始弹性刚度有重要影响。Initial elastic behavior of friction-grip high-strength bolted shear connectors of steel-concrete composite structure is analyzed by ABAQUS.The material nonlinearity of steel beams,concrete slabs and bolted joints is not considered in the finite element model and the modeling results are verified with other test results.Through the verified finite element model,the influence of the parameters such as bolt,steel beam and concrete on the initial elastic stiffness is analyzed and compared.The initial elastic stiffness in different directions is analyzed based on the shear model and shear tensile model.The results show that the bolt diameter,the elasticity modulus of concrete and the bolt pretension has important influence on the initial elastic stiffness of bolted shear connectors.

关 键 词：钢和混凝土组合结构 摩擦型高强螺栓连接件 初始弹性行为 

分 类 号：TU328[建筑科学—结构工程]