焊接锚垫板及锚下混凝土受力分析  

Stress Analysis of Weld Bearing Plate and Concrete Under Anchorage

作　　者：江倩敏 王赞芝[1] 王丹 李生梅 陈道森 江林雁[5] JIANG Qianmin;WANG Zanzhi;WANG Dan;LI Shengmei;CHEN Daosen;JIANG Linyan(School of Civil and Architectural Engineering,Guangxi University of Science and Technology,Liuzhou,Guangxi,545006,China;Chongqing Yapai Bridge Inspection and Monitoring Co.Ltd,Chongqing,401121,China;Liuzhou Branch of Beijing Forest-song Patent Agency,Liuzhou,Guangxi,545006,China;Seventh Branch of Tianjin Urban Construction Design Institute,Hangzhou,Zhejiang,310051,China;Handan Design Engineering Chinacoal Company Limited,Handan,Hebei,056031,China)

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006 [2]重庆亚派桥梁工程质量检测有限公司,重庆401121 [3]北京风雅颂专利代理公司柳州分公司,广西柳州545006 [4]天津城建设计院第七分院,浙江杭州310051 [5]中煤邯郸设计工程有限责任公司,河北邯郸056031

出　　处：《宁波工程学院学报》2020年第2期6-12,共7页Journal of Ningbo University of Technology

基　　金：广西科技计划项目(桂科AB17292022);国家自然科学基金项目(51908141)。

摘　　要：设计制作了5孔圆形Q235焊接锚垫板以及与锚具配套的混凝土试件,根据国家标准对试件进行锚固区传力性能试验,研究了试件表面混凝土的应变变化、裂缝宽度扩展、破坏荷载和锚垫板变形情况。结果表明:试件混凝土应变和裂缝宽度分别在第13次和第10次循环中达到稳定,破坏荷载为1813.96 kN,试件周围混凝土破坏后锚垫板仅发生1 mm塑性变形,达到国家标准《预应力用锚具、夹具和连接器》规定要求,能满足工程应用。A 5-hole circular Q235 welded bearing plate and a concrete specimen matched with the anchorage device were designed and manufactured. According to the national standard, the test of the force transmission performance of the anchorage zone was carried out, and the strain change, crack width expansion, failure load and anchor plate deformation of the bearing plate on the surface of the specimen surface are studied. The results show that the concrete strain and crack width of the specimen are stable in the 13 th and 10 th cycles respectively, and the failure load is 1813.96 KN. Though the concrete around the specimen is damaged, the anchor plate only has 1 mm plastic deformation which meets the requirements of the national standard anchorage, grip and coupler for pre-stressing tendons and can satisfy the engineering application.

关 键 词：焊接锚垫板 混凝土 锚固区传力性能试验 应力分布 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]