Experimental research on flexural rigidity of grouted single mortise-tenon#br# joints for prefabricated metro station structures
Yang Xiuren1,2 Lin Fang1,2 Huang Meiqun1,2
1. Beijing Urban Construction Design and Development Group Co., Ltd., Beijing 100037, China;
2. National Engineering Lab for Green & Safe Construction Technology in Urban Rail Transit, Beijing 100037, China
Abstract：The flexural rigidity of grouted single mortise-tenon joints used in prefabricated metro station structures is analyzed on the basis of the prototype experiments on a 1∶1 scale model loaded in the key working direction. The M-θ relationship curves of the joints under various conditions are obtained and the empirical formula for the joint flexural rigidity is established by using the fitting and differentiation method. Relationship curves of flexural rigidity and bending moment under different axial forces, grouting ranges and joint lengths are discussed. The results show that the joint shows the characteristic of variable rigidity under different loads. Change laws of flexural rigidity and the influence factors of different kinds of joints under different loading conditions are illustrated. The general calculation formulas for calculating the flexural rigidity of single mortise-tenon joint are proposed, which can provide reference for the design and research of similar joints.
杨秀仁 林放 黄美群. 地铁车站预制装配式结构注浆式#br# 单榫接头抗弯刚度试验研究[J]. 土木工程学报, 2020, 53(3): 38-43.
Yang Xiuren Lin Fang Huang Meiqun. Experimental research on flexural rigidity of grouted single mortise-tenon#br# joints for prefabricated metro station structures. 土木工程学报, 2020, 53(3): 38-43.
