分期围护桩对不设缝的地铁接口受力影响分析

Analysis of Influence of Stage Retaining Pile on Force of Subway Interface Without Joint

对分期实施且不设变形缝的地铁明挖区间主体与外挂结构的接口进行受力计算,分析了接口处分期围护桩对接口受力的影响,提出了类似工程设计的要点。同时,基于计算结果及工程实际,参考现有研究成果,提出了当接口采用不设变形缝的方式连接时,提高接口处施工缝抗剪承载力及连接质量的施工措施。

This paper calculates the force on the interface between the main body of the subway open-cut section and the external structure which is implemented in stages without deformation joint,analyzes the influence of the phased retaining pile on the interface force,puts forward the key points of similar engineering design and suggestions on the treatment of the construction joint.At the same time,based on the calculation results and engineering practice,and referring to the existing research results,the construction measures to improve the shear strength and connection quality of the construction joints at the joints are proposed when the joints are connected without deformation joints.