摘要
采用顶管法施工的污水管道,管材如采用钢管,接头在工作井内焊接后顶进,钢管在顶进期间和使用期间的受力与钢筋混凝土承插管有很大区别。以力学原理为基础,根据钢管在顶进期间和运营期间的受力与变形特点,针对现行规范尚不完善之处,补充了施工期间的钢管应力计算方法和计算公式。对现行规范计算管道顶为黏性土时竖向土压力的计算公式提出了修正建议。给出了工程示例。
For steel pipe line which is welded joint to a line and launched by jacking method, the incurred stresses under launching and service period are quite different from precast reinforced concrete pipe. Based on machenics theories, accounting for the characteristics of surrounding forces on pipe and displacement of the pipe under jacking or service periods, the designer presents new method to calculate stresses, offers several formula. There are also modifications presented for the comtemprary design specification in transverse earth load calculation formula.
作者
陈继光
曲研
Chen Jiguang Qu Yan(Guangdong Metallurgical and Architectural Design Institute, Guangzhou 510080, Guangdong, China)
出处
《岩土工程技术》
2016年第6期271-274,285,共5页
Geotechnical Engineering Technique
关键词
钢管
顶管
壁厚
设计
验算
steel pipe
pipe jacking
wall thickness
design
calculation
