携裂纹盖板加强型局部试件力学性能研究  

Research on Mechanical Properties of Reinforced Partial Specimens with Crack Covers

作　　者：闫新 朱广耀 冯立欣 杨云 刘芸[2] 吴天祥 曹瑞泽 YAN Xin;ZHU Guang-yao;FENG Li-xing;YANG Yun;LIU Yun;WU Tian-xiang;CAO Rui-ze(China Construction Communications Engineering Group Corporation Ltd Henan Branch,Zhengzhou 450o02,China;School of Civil Engineering,Qingdao University of Technology,Qingdao 266033;Benchmark Fangzhong Architectural Design Co.Ltd.,Zhengzhou 450002,China;Shandong Institute of Housing and Urban-rural Development,Jinan 250004,China)

机构地区：[1]中建交通建设集团有限公司河南分公司,郑州市450002 [2]青岛理工大学土木工程学院,青岛市266033 [3]基准方中建筑设计有限公司,郑州市450002 [4]山东省住房和城乡建设发展研究院,济南市250004

出　　处：《公路》2025年第3期173-179,共7页Highway

摘　　要：为研究焊缝初始裂纹对梁柱节点抗震性能的影响,采用一种在焊缝表面制作宏观裂纹的方法,在盖板加强型节点局部试件的焊缝区域预制裂纹,对试件进行拉卸循环加载试验,分析裂纹位置对局部试件力学性能的影响。结果表明,初始裂纹的存在会降低试件的承载力和延性性能;初始裂纹位于端部角焊缝左侧时,对加强型节点受力性能的影响更为明显。In order to study the effect of the initial crack of the weld on the seismic behavior of the beam-column joints,a method of making macro crack on the surface of the weld is adopted,which is applied to the partial specimens of the cover plate reinforced joints.Then,the pull-unloading cyclic loading test is carried out to analyze the influence of crack position on the mechanical performance of the partial specimens.The results show that the presence of initial cracks will reduce the bearing capacity and ductility of the specimens,and the effect on the force performance of the reinforced joints is more obvious when the initial crack is located on the left side of the end fillet weld.

关 键 词：桥梁工程 焊缝 初始裂纹 局部试件 力学性能 加强型节点 

分 类 号：U445.583[建筑科学—桥梁与隧道工程]