摘要
进行了植筋锚固试件的单向拉拔试验,通过测量在不同荷载等级下的钢筋滑移、钢筋应变分布并通过观察试件受力破坏过程,归纳植筋锚固的破坏模式,探讨粘结锚固的机理,寻找粘结应力分布规律,研究粘结滑移本构关系。建议在正常使用极限状态设计中,植筋锚固拉力位移曲线可采用四阶段模式,给出了粘结滑移本构关系的基本形式,可用于植筋锚固的有限元非线性分析。
The experiment of adhesive steel bars in concrete under tensile load is finished. Through observing the experiment process and measuring the displacement and strain of steel bars, the behavior of adhesive steel bar in concrete is analyzed. Some important problems such as the failure process, the failure model, the bond mechanism, the distribution of shear stress in adhesive steel bar are all discussed. It is suggested that adhesive steel bar should also be designed according to displacement. The failure process of the steel bar under tensile load is suggested as 4 phases. The basic formula of stressdisplacement relationship for adhesive steel bar is presented, which could be used in nonlinear finite element analysis.
出处
《建筑结构》
CSCD
北大核心
2006年第3期17-21,共5页
Building Structure
基金
德国技术合作公司(GTZ)PPP项目资助
关键词
植筋
锚固
粘结
滑移
adhesive steel bar
embedment
bond
slide displacement
