摘要
为保护拟开挖基坑邻近的地铁隧道,需提前在隧道周围进行搅拌桩加固;但加固的同时会对周围土体产生扰动和变形,因此如何有效地控制搅拌桩施工引起的周围隧道变形成为急需解决的问题。本文结合实际工程,分析研究地铁隧道上方大面积加固深层搅拌桩引起的竖向位移后,提出控制连续成桩数量、隧道上方地基加固、优化打桩顺序、自动监测等控制隧道位移的方法。
In order to protect a subway tunnel adjacent to the foundation to be excavated, it is necessary to make reinforcement with mixing piles around the tunnel in advance.But it may bring~ about soil displacement and deformation. Therefore, how to control the deformation effectively is a pending issue. Based on actual pro- jects, after the analysis of the vertical displacement resulted from the reinforcement of deep mixing piles in the large area over the tunnel,some controlling methods of tunnel displacement were put forward,such as controlling the number of continuous piling,strengthening the foundation over the tunnel,optimizing the piling sequence, automatic monitoring and etc.
出处
《建筑技术》
北大核心
2006年第3期223-225,共3页
Architecture Technology
基金
上海市科学技术委员会资助项目(03QMH1411)
关键词
深层搅拌桩
邻近隧道
控制方法
deep mixing pile
neighboring tunnel
control method
