基于三维实体模型的栓钉连接件推出试件数值模拟  

Numerical Simulation of Push-out Specimens of Stud Connectors Based on Three-dimensional Solid Model

作　　者：廖平 朱海峰 屈兵 黄耀龙 林文聪 LIAO Ping;ZHU Haifeng;QU Bing;HUANG Yaolong;LIN Wencong(School of Civil Engineering,Putian University,Putian Fujian 351131,China;Fujian Nanyu Engineering Construction Limited Company,Sanming Fujian 365000,China)

机构地区：[1]莆田学院土木工程学院,福建莆田351131 [2]福建省南禹工程建设有限公司,福建三明365000

出　　处：《莆田学院学报》2024年第5期77-83,共7页Journal of putian University

基　　金：福建省自然科学基金资助项目(2021J05239);福建省高校产学合作科技计划项目(2023Y4013);莆田市科技项目(2023SZ3001PTXY10);横向课题(2023AHX003(L))。

摘　　要：为研究栓钉连接件推出试件的栓钉抗剪承载力和抗剪刚度,以推出试件为研究对象,建立材料非线性、几何非线性和接触关系的三维实体有限元计算模型,探究了混凝土强度、界面摩擦因数、栓钉屈服强度和钢筋直径对栓钉抗剪承载力和抗剪刚度的影响规律。研究结果表明:1)栓钉与H型钢梁的连接关系可采用绑定形式进行模拟,其计算结果与相关试验结果吻合较好;2)通过提高钢筋直径、栓钉屈服强度和混凝土强度等级来增强栓钉抗剪承载力和抗剪刚度的效果相对较差;3)建议通过提高栓钉直径和界面摩擦因数来改善栓钉的抗剪承载力和抗剪刚度。In order to study bearing capacity and shear stiffness of studs in push-out specimens of stud connections,push-out specimens were selected as the research object.A three-dimensional solid finite element calculation model considering material non-linearity,geometric non-linearity,and contact relationship was established.The effects of concrete strength,interface friction coefficient,stud yield strength and steel bar diameter on bearing capacity and shear stiffness of studs were investigated.The results show that the connection relationship between studs and H-shaped steel beam can be simulated by binding,and the calculated results are in good agreement with the relevant test results.It is relatively poor to increase the shear capacity and shear stiffness of studs by enhancing steel bar diameter,stud yield strength and concrete strength grade.It is recommended to improve the bearing capacity and shear stiffness of studs by increasing the diameter of the stud and the interface friction coefficient.

关 键 词：栓钉连接件 推出试件 三维实体模型 抗剪刚度 抗剪承载力 

分 类 号：TU398.9[建筑科学—结构工程]