软土地区某轨道交通岩土工程风险评估探讨
Discussion on Risk Assessment of Geotechnical Engineering of a Railway Transportation in Soft Soil Areas
孙健1
作者信息
- 1. 上海勘察设计研究院(集团)有限公司 上海市 200093
- 折叠
摘要
该文将上海市轨交15 号线沿线场地分为 6 个工程地质分区,基于层次分析法以及风险矩阵法建立软土地区轨交岩土工程风险评估体系,对轨交15 号线沿线场地岩土工程风险程度进行半定量、半定性评价.评估结论为:浅部有粉性土、砂土分布的区域基坑围护施工的岩土风险较大,盾构区间施工和工程桩(钻孔灌注桩)施工的岩土风险也相对较大;各地质分区的降排水、基坑开挖的岩土风险均大.
Abstract
The site along Shanghai Rail way Transit Line 15 is divided into 6 engineering geological zones in this paper.Based on analytic hierarchy process method and risk matrix method,a rail transit geotechnical engineering risk assessment system in soft soil areas is established,and the geotechnical en-gineering risk degree of the site along Rail Transit Line 15 is assessed by semi-quantitative and semi-qual-itative.The assessment conclusions are:the geotechnical risk of foundation pit enclosure construction in shallow areas comprised by silty soil and sandy soil is larger;the geotechnical risks of drainage and foun-dation pit excavation in each geological zone are greater;the geotechnical risks of shield tunnel construc-tion and engineering piles(bored piles)construction in areas with silty soil and sandy soil distribution are larger.
关键词
岩土工程风险评估/层次分析法/风险矩阵法/软土地区/轨道交通Key words
geotechnical risk assessment/analytic hierarchy process/risk matrix method/soft soil area/railway engineering引用本文复制引用
出版年
2024
NETL
NSTL
万方数据