钢筋预埋深度对握裹力的影响研究  

Study on Impact of Steel Embedment Depth on Bonding Strength

作　　者：邓斌 赵洪春 伍贤翠 

机构地区：[1]重庆建工第二建设有限公司,重庆400030

出　　处：《重庆建筑》2012年第12期7-9,共3页Chongqing Architecture

摘　　要：混凝土对钢筋握裹力的大小,与混凝土施工的强度等级、钢筋直径的大小、钢筋埋入深度等相关。该文使用预埋钢筋来测试不同的预埋深度对钢筋握裹力的影响,采用拉拔试验方法进行试验。实验表明:相同直径的钢筋,握裹力随着预埋深度的增加而增大;并且钢筋混凝土的植筋破坏主要表现在钢筋拉断(达到钢筋屈服强度)、胶-混破坏、混凝土劈裂三种破坏形式;相同的预埋深度,钢筋直径越大,握裹力也越大。The impact of concrete on steel bonding strength is related to the concrete strength grade, steel diameter and steel embedment depth. Impacts of different embedment depths of embedded steel on steel bonding strength are presented through pull-out test. The results show that the bonding strength of steel with the same diameter increases with the increase of embedment depths and the failure is mainly presented through steel rupture（reach steel yielding strength）, glue-concrete failure and concrete splitting, and with the same embedment depth, the bigger steel diameter is, the greater bonding strength is.

关 键 词：预埋深度 钢筋握裹力 拉拔试验 破坏形式 

分 类 号：TU375[建筑科学—结构工程]