土木工程与管理学报2017，Vol.34Issue(3)：91-96,6.
混凝土结构后锚固连接化学锚栓群锚的抗拉性能
Tensile Properties of Bonded-metal-anchor Group for Post-installed Fastenings in Concrete Structures
摘要
Abstract
The anchor group form is different from single anchor in mechanical properties.The researches of chemical anchor bolt are quite limited in China, and the relevant norms and theoretical research are need to be improved.The tensile tests on single anchor, double anchors, four anchors and six anchors were carried out to analyze the impact of group anchor on the failure mode and tensile strength.It was observed in the present test, the failure mode of the post-installed system changed from tensile rupture of anchors (single and double anchors) to concrete fracture in case of four anchors or six anchors.With the specific concrete strength, substrate thickness and embedded depth, the averaged ultimate strength of single anchor decreases gradually with the increase of the of anchor bolts number.Furthermore, the uneven stress behavior of the anchor bolt and the improvement of anchor force caused by stiffness of fixture exist in anchor group,and the coefficients induced by uneven anchor contribution and the stiffness of anchor fixture are proposed as a reference to the practice engineering.关键词
后锚固/群锚/抗拉试验/破坏模式Key words
post-installed fastenings/anchor group/tensile test/failure mod分类
建筑与水利引用本文复制引用
周萌,赵挺生,刘文,张亚静..混凝土结构后锚固连接化学锚栓群锚的抗拉性能[J].土木工程与管理学报,2017,34(3):91-96,6.基金项目
国家高技术研究发展计划(863计划)(2012AA050903) （863计划）
