【作者】 张卫明；

【导师】 贾永刚；

【作者基本信息】 中国海洋大学 ， 环境工程， 2003， 硕士

【摘要】 本文根据对纯化水库进行的现场勘察、室内土工试验、室内资料处理、计算、分析获得了坝基以下各土层的分布规律及物理、力学性质指标，进而确定静、动应力变形分析的典型断面。根据静、动三轴仪对坝体和坝基土料进行的静、动力三轴试验，研究了土料静、动应力变形特性，测定了对坝体进行静、动力应力变形分析所需的参数。采用非线性静、动力有限元分析程序对围坝的4个典型剖面进行了静、动力仿真模拟，模拟计算了坝体自填筑至蓄水运行和发生7°地震各阶段坝体及坝基的变形以及应力分布，地震应力响应和地震引起的超静振动孔隙水压力分布以及永久变形。判断了坝体和坝基中出现裂缝、塑性区以及地震液化的可能性。根据大坝原型观测系统观测的各种数据，对研究的结果和得出的数据进行了检验，为黄河三角洲软土地区兴建“深水高坝”提供了理论和实践的支持。更多还原

【Abstract】 Based on in-situ investigation, indoors soil tests, data process and calculation analysis for CHUNHUA reservoir , this article acquires the distributing regulation and physical & mechanical properties for each layer soil below the dam base, and further determines typical model cross sections for static & dynamic stress deformation analysis. By the static & dynamic triaxial tests on the soil derived from dam and dam base, the article makes research on the soil static & dynamic deformation properties and measured the parameters needed by stress deformation analysis. Non linear static & dynamic finite element procedure is adopted for the true emulation of the four typical geologic profiles of the dam, and imitates to compute the each stage deformation and stress distribution from the dam fill to full water run and during the 7 degree seismic intensity, the article also imitates to compute the response to earthquake force , the excess vibration pore water pressure distribution and permanent deformation, predicting the occurrence possibility of the crac^ plastic zone and earthquake liquefaction. According to all kinds of data obtained from prototype observations system, this article examined the research results and data, it provides the theoretical and practical support for the construction of deep water and high dam in YELLOW RIVER delta soft land area.更多还原