岩土力学Issue(8)：2212-2218,7.
基于Peck公式的双线盾构引起的土体沉降预测
Prediction of soil settlement induced by double-line shield tunnel based on Peck formula
陈春来 1赵城丽 1魏纲 1丁智1
作者信息
- 1. 浙江大学城市学院 土木工程系，杭州 310015
- 折叠
摘要
Abstract
Based on Peck formula, the calculation approaching to study the three-dimension soil settlement caused by ground loss during double-line parallel shield tunnel (DLPST) construction is proposed. Considering the influence of first tunnel construction on second tunnel and different excavation face positions of two tunnels, modified three-dimensional Peck formula is established. It was used to calculate soil settlement caused by both the first and the second shield tunnel construction and combined the results, then the total soil settlement induced by DLPST is obtained. It is indicated that this method forecast value almost satisfied the measured value. With two tunnels excavation facing before and after distance of approximation, the maximum soil settlement volume will gradually increase. With the depth of z increasing, the settlement slightly increases and the settlement slot width slightly reduces. When the two tunnel axis level distance (L) is small, the soil settlement volume will be larger, and it is accord with normal distribution. The maximum soil settlement volume will gradually reduce and the settlement curve shape will slowly change by V type into W type as the increase of L.关键词
双线平行盾构隧道/Peck公式/土体沉降/土体损失Key words
double-line parallel shield tunnel/Peck formula/soil settlement/ground loss分类
建筑与水利引用本文复制引用
陈春来,赵城丽,魏纲,丁智..基于Peck公式的双线盾构引起的土体沉降预测[J].岩土力学,2014,(8):2212-2218,7.
