于子望, 李洪岩, 张延军. 2008: 辽宁省海岸带软土模型及沉降系数研究. 工程地质学报, 16(S1): 6-9.
    引用本文: 于子望, 李洪岩, 张延军. 2008: 辽宁省海岸带软土模型及沉降系数研究. 工程地质学报, 16(S1): 6-9.
    YU Ziwang, LI Hongyan, ZHANG Yanjun. 2008: RESEARCH ON SOFT SOIL MODEL AND SUBSIDENCE COEFFICIENT OF COASTAL ZONE OF LIAONING PROVINCE. JOURNAL OF ENGINEERING GEOLOGY, 16(S1): 6-9.
    Citation: YU Ziwang, LI Hongyan, ZHANG Yanjun. 2008: RESEARCH ON SOFT SOIL MODEL AND SUBSIDENCE COEFFICIENT OF COASTAL ZONE OF LIAONING PROVINCE. JOURNAL OF ENGINEERING GEOLOGY, 16(S1): 6-9.

    辽宁省海岸带软土模型及沉降系数研究

    RESEARCH ON SOFT SOIL MODEL AND SUBSIDENCE COEFFICIENT OF COASTAL ZONE OF LIAONING PROVINCE

    • 摘要: 在大量工作区原位测验和室内实验室静动力力学三轴试验的基础上,根据适用性和实用性选择合适的土体弹塑性本构模型,并重点针对辽宁省海岸带的软土建立宏观数值模型,总结出不同的的埋深,层厚对场地工程性质的影响,探求区域软土沉降的规律。针对已建立的土静力学模型开展模型验证,验证主要以轴对称问题的径向排水固结试验和固结不排水试验验证已建立的本构模型的准确性;并与常规的av1-2, e-lgp等规范方法计算成果进行对比分析后,选择较合理的沉降计算方法,确定本区域沉降计算经验系数Ψs,供估算沉降时应用。基于三种非线性模型计算研究和三轴试验对比,得出了区域的软土实用本构模型,营口—辽滨经济区采用非线性邓肯-张模型较为合适,东港—浪头地区采用剑桥修正模型较为准确。

       

      Abstract: In the foundation of massive area examination and the indoor laboratory static mechanics triaxial tests, choosed the appropriate soil body elastoplasticity modeling according to the serviceability and the usability, and established the macroscopic numerical model of the soft soil of Liaoning Province coastal zone, summarized the influence of different burying depth, the level thick to the location project nature, seeked the rule of region soft soil subsidence. It was validated the established earth statics model by the axial symmetry question's radial direction draining concretion test and undraining concretion test and choosed reasonable subsidence computational method compare with conventional av1-2, e-lgp and so on standard method and definited the subsidence empirical coefficient Ψs of this area for estimate subsidence. Based on contrast of three kind of model computation and the triaxial test, we have obtained the region soft soil practical modellings, the Yingkou-iaobin economic zone usesd nonlinear elastic (Duncan and Chang )model to be more appropriately and the modified Cam-Clay model to be more accurately to Donggang-Langtou.

       

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