高层建筑引发地面沉降模拟预测三维流固全耦合模型

doi:10.13278/j.cnki.jjuese.201606201

Abstract

Abstract: In order to predict the land subsidence accurately caused by high-rise building which led to the changing of stress field and seepage flow field, the constitutive relation was extended to viscoelastic plasticity based on Biot's consolidation theory and combined with the nonlinear rheological theory of soil, and the dynamic change relationship of mechanical parameters and hydraulic parameters were also took into account. A three-dimensional full coupling mathematic model of Cangzhou combined with high-rise building load, groundwater seepage and deformation of soil settlement was set up. Based on identification and verification of the model, the characteristics of each aquifer groundwater flow field and developing tendency of land subsidence from the end of December 2010 to the end of December 2025 was predicted with the condition that exploitation of the groundwater in the study area was stopped. The results show that:the maximum of land subsidence caused by high-rise building in Cangzhou is 40.57mm, and the maximum rate of land subsidence is 2.7 mm/a, locate in the urban district of Cangzhou.

Key words: high-rise building load, land subsidence, Biot's consolidation theory, groundwater seepage, three-dimentional full coupling math model, Cangzhou, Hebei Province

CLC Number:

P642.26

Fu Yanling, Luo Zujiang, Liao Xiang, Zhang Jianmang. A Three-Dimensional Full Coupling Model to Simulate and Predict Land Subsidence Caused by High-Rise Building[J].Journal of Jilin University(Earth Science Edition), 2016, 46(6): 1781-1789.

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A Three-Dimensional Full Coupling Model to Simulate and Predict Land Subsidence Caused by High-Rise Building

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