郑东新区顶管施工中顶进阻力的确定方法探讨

Discussion of Jacking Resistance Determination Method in Pipe-jacking Construction in Zhengdong New District

介绍顶管施工尤其是长距离顶管施工中顶进阻力的重要性,列举了采用《给水排水工程顶管技术规程》(CECS:2008)、《给水排水管道工程施工及验收规范》(GB 50268—2008)计算顶进阻力的公式和日本下水道协会制定的顶进钢筋混凝土管顶力的计算公式。在郑东新区土压平衡顶管工程实例中对顶进阻力进行了测试和研究,指出理论计算结果与实际值之间存在的差异。提出了适合郑东新区的顶管顶进阻力的计算方法。

This paper introduces the importance of pipe jacking resistance in pipe jacking construction, especially in long distance pipe jacking construction. The formulas for calculating jacking resistance in Technical Specification for Pipe Jack- ing in Water Supply and Drainage Engineering （CECS：2008）and Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering（ GB 50268--2008）as well as the formula for calculating jacking force of jacking rein- forced concrete pipe made by Japan Sewer Association are listed. In a case of earth pressure balancing pipe jacking engi- neering in Zhengdong new district, the jacking resistance is tested and studied, the difference between theoretical calcula- tion results and actual value is pointed out and new calculating method for the pipe jacking resistance suitable for Zheng Dong new district is put forward.