作　　者： ; ; ; ; ;

机构地区： 广东石油化工学院

出　　处： 《混凝土与水泥制品》 2013年第6期54-57,共4页

摘　　要： 植钢锚固技术是一种新型的加固技术,本文基于植筋技术的研究,通过混凝土锚固型钢的静力拉拔实验,得到了不同型号角钢在不同强度等级混凝土下的植钢锚固的荷载-滑移全过程曲线。试验的破坏形式有两类:型钢拉断破坏和型钢与胶的界面滑移破坏,在不同破坏形式下荷载滑移曲线为三段式。并分析了型钢混凝土界面的粘结破坏机理。提出线荷载-滑移本构关系作为植钢锚固技术的粘结滑移本构关系,该关系式可用于指导有限元计算。 Embedded steel in concrete is a new reinforcement technology. Based on the adhesive bar research, though the static stress pull-out tests of adhesive steel in concrete, the whole load-slip curves of different style angle steel with different strength grade concrete are obtained. There are two types of failure modes： the section steel snapping failure and interface sliding failure between the section steel and the structural adhesive. The load-slip curve can be divided into three stages under different failure modes. The failure mechanism of interface between steel and concrete is analyzed. The line toad-slip constitutive relationship is proposed as the bond-slip constitutive relationship of embedded steel in concrete, which can be used to conduct the finite element calculation.

关 键 词： 植钢技术 拉拔试验 破坏机理 本构关系

领　　域： [建筑科学]