| 软土深基坑有支撑暴露变形研究 |
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| 引用本文： | 宋立峰. 软土深基坑有支撑暴露变形研究[J]. 城市轨道交通研究, 2008, 11(7) |
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| 作者姓名： | 宋立峰 |
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| 作者单位： | 中铁十九局集团第五工程有限公司,116100,大连 |
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| 摘 要： | 软土地区深基坑的变形控制和治理问题已成为目前岩土工程研究中的一个热点。大量工程实践证明,软土地区基坑有支撑暴露对变形的影响不容忽视。结合上海轨道交通7号线沪太路站基坑,对有支撑暴露时间及其发生的变形进行了分析。结果表明:有支撑暴露变形与暴露时间、开挖深度、支撑轴力及加固情况等因素有关,随暴露时间的延长变形会逐步增加,需引起足够重视。提出尽量缩短有支撑暴露时间,减少有支撑暴露期间的施工扰动并及时按要求复加支撑轴力等控制有支撑暴露变形的施工措施。
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| 关 键 词： | 软土深基坑 有支撑暴露 变形控制 |
On Bracing Exposure Displacement of Deep Pits in Shanghai Soft Soil Ground |
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| Song Lifeng. On Bracing Exposure Displacement of Deep Pits in Shanghai Soft Soil Ground[J]. Urban Mass Transit, 2008, 11(7) |
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| Authors: | Song Lifeng |
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| Abstract: | How to control and treat the displacement of deep pit in URT is a very important problem in the engineering on soft soil ground.Many projects have shown that the effects of bracing exposure on the pit displacement cannot be neglected.Based on the engineering of deep pit at Hutai Road station of Shanghai Rail Line 7,the relationship between bracing displacement and exposure time is analyzed,some measures which are supposed to control the bracing displacement of pits are discussed. |
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| Keywords: | soft soil deep pit bracing exposure displacement control |
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