地铁车站预制装配式结构注浆式单榫#br# 短接头抗弯承载性能试验研究#br#

文章基于注浆式单榫短接头在偏心受压条件下的承载性能试验研究，分析单榫短接头的M-θ曲线特征、裂缝发展规律、混凝土和钢筋应力特性，明确短接头的破坏形态，提出主要承载阶段的占比关系；同时对不同注浆材料和不同荷载条件下短接头的抗弯承载表现进行分析，得到不同因素对短接头抗弯承载的影响；并通过与单榫长接头在承载特性、裂缝发展及接缝变形等方面进行对比研究，揭示短接头的承载机理，明确短接头的应用条件。

Experimental study on flexural bearing capability of short grouted single#br# mortise-tenon joints in prefabricated metro station structure

The experimental study on bearing capacity of short grouted single mortise-tenon joints under eccentric compression condition was conducted. The characteristics of M-θ curves, development law of cracks and distribution characteristics of concrete and steel stress are investigated. The final failure mode of the joints are obtained and the proportion rules of bearing capacity for main bearing stage are concluded. The flexural behaviors of the short joints with different grouting materials and different loading conditions are compared and the influence laws of different factors on short joints are obtained. Furthermore, the bearing behavior, crack development and joint deformation are compared between the long joints and the short joints. Finally, the bearing mechanism and application condition of short joints are revealed, which can provide reference for the design of similar structures.