某大型填海造地工程人工岛护岸结构固结沉降及蠕变数值分析  

Numerical analysis of consolidation settlement and creep deformation in artificial island bank protection structure of a large-scale marine reclamation land project

作　　者：赵杰[1] 程翔[1] 王桂萱[1] 

机构地区：[1]大连大学土木工程技术研究与开发中心,辽宁大连116622

出　　处：《水运工程》2013年第5期150-156,共7页Port & Waterway Engineering

基　　金：辽宁省教育厅资助项目(0102517);大连市科学技术基金(2010J21DW013)

摘　　要：为了分析填海造地工程中软基沉降的影响因素,运用岩土工程专业有限元分析软件PLAXIS,借鉴日本关西机场工程经验数据,采用软土蠕变模型,进行整个场区的固结沉降及其孔压消散数值模拟,绘制出不同基准期沉降及孔压分布图,对比分析不同深度地基土层孔压消散趋势,得出相应成果。此外,针对软土蠕变模型中的主要参数开展敏感性分析,总结其对沉降结果的影响规律,相应成果可为填海造地相关工程提供参考和指导。同时提出,蠕变指标的经验取值法尚未得到广泛应用,有待于进一步研究。In order to analyze the factors of settlement of soft foundation in marine reclamation land project, as a professional geotechnical engineering finite element software, the PLAXIS is used in this paper, and learn from Japan＇s Kansai airport project experience data, soft soil creep model is used and consolidation settlement and pore pressure dissipation of the numerical analysis of the entire area is done. It also draw out the settlement and pore pressure results of different base period in figure comparative analysis, and the different depth of soil pore water pressure dissipation trends. In addition, this paper carries out the necessary sensitivity analysis and obtains the law of the main parameters in soft soil creep model on the results of settlement, and its corresponding results for marine reclamation land project to provide reference and guidance. Moreover, it is suggested that the empirical method of the creep index value has not been applied widely, further research needs to be done.

关 键 词：填海造地 软土蠕变模型 固结沉降 孔压 数值分析 

分 类 号：TU433[建筑科学—岩土工程]