| 高层建筑引发地面沉降模拟预测三维流固全耦合模型 |
| |
| 引用本文： | 付延玲,骆祖江,廖翔,张建忙.高层建筑引发地面沉降模拟预测三维流固全耦合模型[J].吉林大学学报(地球科学版),2016,46(6):1781-1789. |
| |
| 作者姓名： | 付延玲 骆祖江 廖翔 张建忙 |
| |
| 作者单位： | 河海大学地球科学与工程学院,南京,211100;河海大学地球科学与工程学院,南京,211100;河海大学地球科学与工程学院,南京,211100;河海大学地球科学与工程学院,南京,211100 |
| |
| 基金项目： | 河北省重大科研项目(CZCG2012055)Supported by Major Program of Science and Technolgy Foundation of Hebei Province(CZCG2012055) |
| |
| 摘 要： | 为了准确预测由高层建筑引发土体应力场和渗流场变化而导致的地面沉降,以比奥固结理论为基础,结合土体非线性流变理论,将比奥固结理论中的本构关系拓展到黏弹塑性,并考虑了土体孔隙度、渗透系数及变形参数随有效应力的动态变化关系。以河北省沧州市为例,建立了沧州市高层建筑荷载、地下水渗流与土体变形三维流固全耦合数学模型。在对模型进行识别、验证的基础上,模拟预测了沧州市在地下水停采、仅存在高层建筑荷载的影响下,从2010年12月底到2025年12月底逐年的各含水层组地下水流场变化特征和地面沉降发展趋势。结果表明:沧州市由高层建筑荷载引发的最大地面沉降量为40.57mm,最大地面沉降速率为2.7 mm/a,位于沧州市区。
|
| 关 键 词： | 高层建筑荷载 地面沉降 比奥固结理论 地下水渗流 三维全耦合数学模型 河北沧州 |
A Three-Dimensional Full Coupling Model to Simulate and Predict Land Subsidence Caused by High-Rise Building |
| |
| 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 Unviersity:Earth Science Edition,2016,46(6):1781-1789. |
| |
| Authors: | Fu Yanling Luo Zujiang Liao Xiang Zhang Jianmang |
| |
| 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 40.57 mm,and the maximum rate of land subsidence is 2.7 mm/a,locate in the urban district of Cangzhou. |
| |
| Keywords: | high-rise building load land subsidence Biot’s consolidation theory groundwater seepage three-dimentional full coupling math model Cangzhou Hebei Province |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
