预制装配式结构中预留孔钢筋浆锚搭接的试验研究  

EXPERIMENTAL RESEARCH ON REINFORCED ANCHORAGE BY GROUTING IN PREFORMED HOLE OF PREFABRICATED CONCRETE STRUCTURE

作　　者：吴涛[1] 刘全威[1] 赵天俊[1] 张磊[1,2] 

机构地区：[1]长安大学建筑工程学院,西安710061 [2]陕西建筑产业投资集团有限公司,西安710003

出　　处：《工业建筑》2017年第5期68-73,共6页Industrial Construction

基　　金：国家自然科学基金项目(51578072);陕西省自然科学基金(2016JM5070);陕西省科技统筹创新工程计划项目(2015KTZDSF03-04;2015KTZDSF03-05-01);西安市科技计划项目(CXY1512(6));中央高校基本业务费(310828163410)

摘　　要：提出一种焊接预留孔钢筋浆锚搭接连接技术,通过对36个钢筋浆锚搭接连接试件的拉拔试验,研究其破坏形态、荷载-试件变形曲线以及裂缝发展过程等。试验中,33个试件为钢筋拉断破坏,3个搭接长度为0.3ll的试件发生了锚固破坏,且锚固破坏的试件出现了纵向贯穿劈裂裂缝。研究表明:该连接方式性能良好,可显著减小钢筋搭接长度。A new connection technique of anchorage rebar by grouting in a preformed grout holes surrouded stirrups with longitudinal reinforcements was designed, and the failure mode, loading-deformation curve and the development processes of cracks were studied through the pull-out tests of 36 grouting anchorage specimens. The research showed that the 33 specimens were rebar fracture failure mode, and the 3 specimens with the lap length of 0.3ll were anchor failure mode. The longitudinal cracks appeared in the 3 specimens were anchor failure mode. The connection technique had good performance in reducing lap length.

关 键 词：预制装配式结构 浆锚搭接 拉拔试验 搭接长度 

分 类 号：TU758.11[建筑科学—建筑技术科学]