Dynamic response of a thawing soil around the tunnel under the vibration load of subway

Dynamic response of a thawing soil around the tunnel under the vibration load of subway
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地铁振动荷载作用下隧道周边解冻土的动力响应

DOI:
10.1007/s12665-014-3596-8
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发表时间:
2015-03
影响因子:
2.8
通讯作者:
Cui, Zhen-Dong
Cui, Zhen-Dong
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
He, Peng-Peng;Cui, Zhen-Dong

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软土地区地铁隧道采用人工冻结法施工后,会留下一定厚度的融土。冻融后土体的物理力学性质发生了很大变化,因此,在相同的地铁振动荷载作用下,融化土的动力响应与原状土的动力响应不同。本文对融化土和原状土进行了数值模拟。分析了表面和某些特殊点的加速度和位移的变化规律。得到了波在土中的传播特性以及解冻土与原状土的差异。
A certain thickness of thawing soil remains after the construction of subway tunnel by the artificial freezing method in soft soil area. The physical and mechanical properties of soil change a lot after freezing and thawing; therefore, the dynamic response of thawing soil is different from that of undisturbed soil under the same vibration loads of subway. The numerical simulations of thawing soil and undisturbed soil were conducted in this paper. The variations of the acceleration and the displacement of the surface and some special points were analyzed. The propagation characteristics of wave in the soil and the differences between thawing soil and undisturbed soil were obtained.
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