软土盾构隧道纵向设计综述

A Survey of the Designing Methods for Shield Tunnel in Soft Soil

通过对软土盾构隧道结构设计理论的现状和已建软土盾构隧道结构存在问题的分析,指出克服软土盾构隧道结构发生过量纵向沉降或不均匀沉降而引起隧道渗水、漏泥、结构局部破坏等影响隧道正常使用及其耐久性问题的关键是展开纵向设计理论研究。在纵向设计理论指导下,通过软土盾构隧道衬砌管片拼装形式、管片材料等方面的创新改造,使软土盾构隧道的设计方法更加科学合理。

The designing methods of the shield tunnel and the main problems of the shield tunnels built in soft soil are discussed in this paper. The way to conquer such problems as the failure of tunnel structure and waterproofing of joints caused by the longitudinal deformation of shield tunnel, is the development of the theory of the longitudinal structure design of shield tunnel.