Research status and development of indirect splice of vertical reinforcement in precast shear wall structure
Reinforcement connection of assembled concrete shear wall structure has always been the focus of attention in the industry,and the way of reinforcement force transmission has an important impact on the reliability of the connection and the construction and installation efficiency of the assembled structure.In this paper,the research status of indirect splice of vertical reinforcement in precast shear wall structures is summarized.The construction methods of indirect splice of vertical reinforcement in different precast shear wall structure systems are summarized.The force transfer mechanism between vertical reinforcement and connecting reinforcement is analyzed.The influence of factors such as layout form of steel bars,spacing,diameter,transverse reinforcement,concrete strength and lapping length on the force transfer effect of indirect splice of steel bars and the force performance of precast shear walls is summarized.The influence of concrete interface's treatment process and construction quality of superimposed shear wall on the indirect splice force transfer effect of steel reinforcement is found to be lacking in existing research.It is suggested to carry out quantitative research on the influence of different influencing factors on the lap length,which can provide the basis for practical engineering applications.
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