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Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

机译：直接剪力作用下预制混凝土墙板之间灌浆竖缝的剪切特性研究

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摘要

A precast wall-type building is constructed by stacking wall panels and slabs. This paper presents a study of the in-plane shear behavior of vertical grouted joints between precast panels. Thirteen jointed wall panel specimens were tested under direct shear. Based on the results, analytical expressions were developed to predict the shear load versus slip behavior. These can be used in computational models of precast wall type buildings, through modeling of shear springs between the panels. To demonstrate the application, a numerical analysis of an isolated jointed shear wall was performed. The wall was modeled for three cases, (a) monolithic wall, (b) two walls with a gap and (c) two walls with shear links. Based on non-linear pushover analysis, it was demonstrated that the modeling of jointed walls using shear links reduces the conservatism inherent in a model neglecting the shear transfer across the joint.
机译：通过堆叠墙板和楼板来建造预制墙式建筑物。本文介绍了预制板之间垂直灌浆缝的面内剪切特性的研究。在直接剪切下测试了13个接缝墙面板样品。根据结果​​，开发了解析表达式来预测剪切载荷与滑移行为之间的关系。通过对面板之间的剪切弹簧进行建模，这些可用于预制墙式建筑物的计算模型。为了演示该应用，对隔离的联合剪力墙进行了数值分析。该墙是针对三种情况建模的：（a）整体墙，（b）两个有缝隙的墙，以及（c）两个有剪力连接的墙。基于非线性推覆分析，结果表明，使用剪力连杆对节理墙进行建模会降低模型中固有的保守性，而忽略了穿过节理的剪力传递。

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