曲线顶管稳定性理论分析探讨

Theoretical Analysis and Discussion on Stability of Curved Pipe Jacking

曲线顶管技术具有对周围环境及交通影响小、综合成本低、施工周期短等优势,应用前景广阔。目前,对曲线顶管顶进过程中稳定性的理论分析方法较少。文章对曲线顶管稳定性理论分析方法进行探讨,对曲线顶管受力特性进行理论分析,并给出了曲线顶管竖向及水平向允许附加土体抗力的表达式,提出一种曲线顶管稳定性判断的方法。

curved pipe jacking technology, as a series of advantages such as small impact on the surrounding environment and traffic, low comprehensive cost and short construction period, has broad application prospects. At present, there are few theoretical analysis methods for the stability of curved pipe jacking process. In this paper, the theoretical analysis method of the stability of curved pipe jacking is discussed, the mechanical characteristics of curved pipe jacking are theoretically analyzed, the expressions of allowable additional soil resistance in vertical and horizontal directions of curved pipe jacking are given, and a method for judging the stability of curved pipe ja cking is proposed.