钢筋半套筒灌浆连接的静力拉抻试验研究  

Investigation into Half Grout Sleeve Splicing for Rebars via Static Tensile Test

作　　者：黄远[1] 朱正庚 黄登[1] 易伟建[1] 张锐[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《华南理工大学学报（自然科学版）》2016年第2期26-32,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51478174;51338004);湖南省自然科学基金资助项目(14JJ3054);湖南大学中央高校基本科研业务费专项资金资助项目(2015HNDX)~~

摘　　要：为了研究钢筋半套筒灌浆连接试件的力学性能,对14个钢筋半套筒灌浆连接试件进行了静力拉伸试验,试验中研究的主要参数为钢筋直径、套筒尺寸以及钢筋偏位.研究表明:所采用的半灌浆套筒满足强度要求;试件发生了钢筋拉断、钢筋刮犁式拔出和套筒滑丝3类破坏;当破坏形态为钢筋拉断时,钢筋是否偏位对试件的承载力几乎没有影响.在试验结果及分析的基础上,提出了防止试件发生钢筋刮犁式拔出和套筒滑丝破坏的设计方法.In order to investigate the mechanical properties of half grout sleeve splicing for rebars,14 specimens were tested under static tension,with such main parameters as bar diameter,sleeve dimension and rebar deviation being considered.The results show that( 1) the tested half grout sleeves meet the strength requirements well;( 2)the specimens are destroyed in three failure patterns including the tension fracture of the rebar,the rebar scratchplough pulling out of the rebar and the sliding wire of the sleeve;and( 3) when the tension fracture of the rebar occurs,the rebar deviation has little effect on the bearing capacity of specimens.Based on the analysis of the test results,a design method is put forward to avoid the occurrence of the rebar scratch-plough pulling out and the sleeve sliding wire.

关 键 词：钢筋 半套筒灌浆连接 破坏形态 力学性能 静力拉伸试验 承载力 

分 类 号：TU375[建筑科学—结构工程]