顶管穿越堤防的施工过程影响分析
Analysis of the Impact of Pipe Jacking Construction Process on Embankment Crossing
李瑞贤 1闫志刚 2杨巧1
作者信息
- 1. 江海职业技术学院,江苏 扬州 225101
- 2. 扬州职业大学,江苏 扬州 225126
- 折叠
摘要
为了满足水系丰富的城市基础设施建设需求,顶管穿堤工程越来越多.为保证水下施工质量及岸坡稳定,分析穿堤顶管施工过程对岸坡稳定的影响是十分必要的.通过构建典型的三维边坡计算模型,分析顶管穿堤至不同位置时岸坡的变形,并对埋设深度、管道尺寸和坡比等指标进行敏感性分析.研究发现,增大管径会使管壁表面摩擦力增大,进而会增加岸坡土体下滑力,不利于岸坡的安全稳定性;当顶管埋深达到管径的6 倍左右时,顶管穿越对岸坡稳定的影响较小.
Abstract
In order to meet the increasing demand for urban infrastructure construction in water-rich areas,the construction of pipe jacking through embankments is becoming more common.Analyzing the impact of construction of pipe jacking through embankments on slope stability is crucial to ensure the quality of underwater construction and the stability of riverbank slopes.By constructing a typical 3D slope calculation model,the deformation of river-bank slopes during pipe jacking through different positions is analyzed,and sensitivity analysis is conducted on in-dicators such as burial depth,pipe size,and slope ratio.The study finds that increasing the pipe diameter increa-ses the frictional force on the pipe wall,which in turn increases the sliding force of the slope soil,posing challenges to slope safety and stability.However,when the burial depth of the pipe jacking reaches around 6 times the pipe diameter,the impact on slope stability from pipe jacking through embankments is relatively small.
关键词
顶管/岸坡/三维模型/安全系数/影响范围Key words
pipe jacking/riverbank slope/3D model/safety factor/impact range引用本文复制引用
出版年
2024
NETL
NSTL
万方数据