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.
出处
《工业建筑》
CSCD
北大核心
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)
关键词
预制装配式结构
浆锚搭接
拉拔试验
搭接长度
prefabricated concrete structure
grouting anchorage
pull-out test
lap length
