| 正台阶环形开挖法有限元模拟 |
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| 引用本文： | 肖翔.正台阶环形开挖法有限元模拟[J].水运科技信息,2011(2):63-65. |
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| 作者姓名： | 肖翔 |
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| 作者单位： | 荆岳铁路有限责任公司,荆门434000 |
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| 摘 要： | 正台阶环形开挖法是针对不良土体的一种常用的开挖方法,对IV级和V级围岩进行正台阶环形开挖法的有限元数值模拟。结果表明：在较差的围岩情况下,正台阶环形开挖法环状开挖受力较为均匀,但对于沉降的控制一般,对于沉降控制要求较高的地段应谨慎使用;对于围岩岩质较差但不需要控制沉降的地段,正台阶环形开挖法环状开挖留核心土法有较明显的优势。
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| 关 键 词： | 隧道 环状开挖留核心土 有限元 应力 位移 |
FEM Simulate of Annular Excavation with Core Rock Support Method |
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| Xiao Xiang.FEM Simulate of Annular Excavation with Core Rock Support Method[J].Transportation Science & Technology,2011(2):63-65. |
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| Authors: | Xiao Xiang |
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| Institution: | Xiao Xiang(JingzhouYueyang Railway Co.,Ltd.,Jingmen 434000,China) |
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| Abstract: | The annular excavation with core rock support method is a method which is often used in poor soil.This paper completed finite element simulation for this method in V grade and IV grade surrounding rock.The results show that in poor rock conditions,the surrounding stress is uniform by annular excavation with core rock support method,but the settlement control is not good.The method has obvious advantages in poor surrounding rock and without strictly settlement control area. |
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| Keywords: | tunnel the annular excavation with core rock support method FEM stress displacement |
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