盾构隧道内部双层预制结构梁-柱节点连接技术研究

Study on Connection Technology of Internal Double-layer Prefabricated Structure Beam - Column Joint of Shield Tunnel

摘要:

以诸光路盾构隧道工程为依托，进行了预制结构梁-柱节点的试验研究。试验结果表明，采用超高性能混凝土UHPC作为后浇材料，梁端钢筋可以采用只搭接不焊接的形式，既保证了连接接头强度和刚度，又提高了施工效率和施工质量，为隧道内部结构的预制拼装设计、快速化施工提供了参考。

Abstract:

Based on Zhuguang Road Shield Tunnel Project, the experimental study of prefabricated structure beam-column joints is carried out. The experimental results show that ultra-high performance concrete (UHPC) is used as the post-pouring material, and the steel bar at the end of the beam can be in the form of overlap without welding, which not only guarantees the strength and stiffness of the joints, but also improves the construction efficiency and quality, and provides a reference for the prefabricating assembly design and rapid construction of the tunnel internal structure.