类矩形盾构壳体与土相互作用下周边地层变形模式

doi:10.13722/j.cnki.jrme.2016.1054

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摘要

为从地层变形控制能力评价新型类矩形盾构工法的推广价值，依托国内首例类矩形盾构隧道工点试验线，通过有限元模拟判定盾构壳体与土相互作用过程下周边地层的变形规律，并建立了测试项目较为齐全的现场原位试验段，最终构建了类矩形盾构壳体与土相互作用下周边地层变形模式。研究结果表明：垂直于类矩形盾构掘进方向的地层变形可划分为挤土外扩和回弹收缩两阶段，而沿着盾构掘进方向的地层变形受类矩形盾构扁平状壳体背土的影响显著。

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	季昌1
	周顺华1
	朱瑶宏2
	王柳善3
	司金标1

关键词 ：隧道工程, 类矩形盾构, 掘进施工, 地层变形模式, 原位测试

Abstract：

From the angle of strata-deformation ability，this paper is aimed at evaluating the promotion value of a new kind of quasi-rectangular shield method. Based on the domestic first quasi-rectangular shield tunnel worksite test facilities，this paper proposes the finite element method which can simulate the physical process of the interaction of soil and quasi-rectangular shield shell to study the deformation mechanism of surrounding strata. An in situ test project with a complete testing program was then established. Finally，the surrounding strata deformation pattern under the interaction of soil and shield shell has been built. The results of the study prove that： strata deformation pattern on the vertical direction of shield tunneling can be divided into compaction expansion stage and resilient contraction phase，and strata deformation pattern on the direction of shield tunneling is greatly influenced by quasi-rectangular shield back earth on the flat shell.

Key words： tunnelling engineering quasi-rectangular shield tunneling construction strata deformation pattern in-situ test

引用本文:

季昌1，周顺华1，朱瑶宏2，王柳善3，司金标1. 类矩形盾构壳体与土相互作用下周边地层变形模式[J]. 岩石力学与工程学报, 2017, 36(S1): 3644-3655.
JI Chang1，ZHOU Shunhua1，ZHU Yaohong2，WANG Liushan3，SI Jinbiao1. Surrounding strata deformation pattern under the interaction between shell of quasi-rectangular shield and soft soil. , 2017, 36(S1): 3644-3655.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2016.1054 或 https://rockmech.whrsm.ac.cn/CN/Y2017/V36/IS1/3644

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