带填板的端板连接梁拼接节点抗弯性能有限元分析  

Finite Element Analysis of Bending Performance of End-Plate Beam Splices with Filler Plates

作　　者：田欣 张素梅 陈振明 陶宇 张冰 TIAN Xin;ZHANG Sumei;CHEN Zhenming;TAO Yu;ZHANG Bing(Department of Civil and Environmental Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China)

机构地区：[1]哈尔滨工业大学(深圳)土木与环境工程学院,广东深圳518055

出　　处：《工业建筑》2023年第9期78-87,共10页Industrial Construction

基　　金：中国五矿集团有限公司“应用基础研究”科技专项计划(2019ZXB07);住建部科学技术计划项目(2019-K-089)。

摘　　要：目前装配式钢梁连接常采用高强螺栓端板连接形式,构件在工厂制作完成,加工精度高;构件运抵施工现场采用高强螺栓完成拼接,安装快捷方便;但在连接端板之间经常存在对接缝隙,工程中常采用填板弥补空隙。但目前相关规范中对于填板的厚度并无规定。为研究填板对于端板连接梁梁拼接节点抗弯刚度及抗弯承载力的影响,采用有限元软件ABAQUS建立了含有填板的端板连接节点实体单元模型,设置了结构各组件间复杂的接触关系,考虑了端板厚度及填板厚度的影响,研究了螺栓杆的拉力传递、中和轴位置的变化、填板的受力情况及端板受拉区的极限受力状态等工作机理。分析结果表明:当钢梁为H400×200×8×13,端板为-400×200×t_(p1)(t_(p1)=12~24 mm)时,随着填板厚度的增加,节点的初始抗弯刚度减小,当填板厚度在15 mm以内时,对节点抗弯承载力无明显影响。Currently,the connection of prefabricated steel beams often adopts the form of high-strength bolt end-plate splices.The beam components are manufactured in the factory and thus have high manufacture procision.When the beam components arrive at the construction site,high-strength bolts are used to complete the splicing,which is fast and convenient for installation.However,there are often assembly gaps between the end plates of prefabricated steel beams,and filler plates are often used to fill these gaps in the construction process.At present,there is no regulation in the design code regarding the influence of filler plates.In order to study the effect of filler plate on the bending stiffness and bending capacity of end-plate splice,finite element software ABAQUS was used to establish a solid element model of end-plate splice with filler plate,the complex contact relations between these components were set up.By considering the effects of thicknesses of end-plate and filler plate,the paper investigated the working mechanism of the tensile force transmitted by high-strength bolts,the position changes of the neutral axis,the stress state of the filler plate,and the ultimate stress state of the end-plate in the tensile zone.The analysis results indicated that for the H-section steel beam H400×200×8×13 and filler plate-400×200×t_(p1)(t_(p1)=12-24 mm),the initial bending stiffness of the end-plate beam splice increased with the increase of the filler plate thickness,when the filler plate thickness was within 15 mm,the bending capacity of the end-plate beam splice was not significantly influenced by the filler plate thickness.

关 键 词：端板连接 填板 高强螺栓 抗弯性能 承载力 

分 类 号：TU391[建筑科学—结构工程]