硬塑粘土层中钢筋混凝土顶管结构计算问题的探讨  

Calculation of Reinforced Concrete Pipe Jacking in Hard-plastic Cohesive Soil

作　　者：王志进 苑藜 沙浣玲 

机构地区：[1]合肥市市政设计研究总院有限公司,安徽合肥200031 [2]合肥市市政设计研究总院有限公司特种结构院,安徽合肥200031

出　　处：《混凝土世界》2022年第7期50-55,共6页China Concrete

摘　　要：本文通过工程算例,分别计算管道顶进穿越均质淤泥、饱和粘性土、硬塑性粘性土和砂性土时,其管顶上部竖向土压力、管拱背部土压力和管道侧向土压力标准值,分析在硬塑性粘性土顶进时管顶上部竖向土压力和管道侧向土压力标准值出现负值的原因,并提出将负值调整为零后带入后续计算的修正思路,供工程设计人员参考。In this paper,the standard values of the vertical soil pressure on the pipe top,the soil pressure at the back of the pipe arch and the lateral soil pressure of the pipe when the pipe is jacked through homogeneous silt,saturated cohesive soil,hard-plastic cohesive soil and sandy soil are calculated respectively,and the reasons for the negative values of the vertical soil pressure on the pipe top and the the lateral soil pressure of the pipe when the pipe is jacked through hard-plastic cohesive soil are analyzed,this paper puts forword the correction idea of adjusting the negative value to zero and bringing it into the subsequent calculation as well.In addition,the ideas of modifying are given for reference of engineering designers.

关 键 词：顶管 硬塑性黏性土 管顶上部竖向土压力标准值 管道侧向土压力标准值 

分 类 号：TU990.3[建筑科学—市政工程]