Numerical Simulation of the Influence of Row Piling on Underground Pipelines
Numerical Simulation of the Influence of Row Piling on Underground Pipelines
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DOI：
10.1061/9780784413821.079
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
Hui-Fen Guo;Jianbo Yuan;Qun Lu;Xiangnan Zhou
中科院分区：
文献类型：
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作者：
Hui-Fen Guo;Jianbo Yuan;Qun Lu;Xiangnan Zhou
以往对挤土效应的研究主要集中在单桩上，对群桩挤土效应的分析较少，而在实际过程中，桩基工程的设计和施工都是以群桩的形式进行的。为了进一步研究群桩施工对地下管线的影响，采用三维实体模型。采用位移贯入法完成打桩过程。考虑了桩土摩擦、管土摩擦、大变形和非线性等因素。打桩过程更符合实际工艺。以排桩贯入为例，对静压桩在不同成桩顺序条件下进行了数值模拟，分析了桩身应力和位移的变化。结果表明，排桩贯入对地下管线产生的各种应力和位移随着每根桩的贯入量以及每根桩贯入对管线产生的应力和位移与打桩顺序有关而累积增大。
Previous research on soil compaction effect mainly focused on single pile, and the analysis of the effect in the group piles was less. In the actual process, though, the design and construction of pile foundation engineering are based on the form of group piles. In order to further study the effect of construction of group piles on an underground pipeline, a three-dimensional entity model is adopted. The displacement penetration method is used to complete the process of piling. The friction between piles and soil, pipe and soil, large deformation and nonlinear factors are taken into account. The process of piling is more in line with the actual process. Taking the penetration of row piles for example, the numerical simulation of the static pressure pile is carried on under the condition of different piling sequences and the change of stress and displacement are analyzed. The results show that all kinds of stress and displacement of underground pipeline produced by the penetration of row piles increase cumulatively as the penetration of each pile and the stress and displacement of pipeline produced by the penetration of each pile are related with the sequence of piling.