| 1. | Reducing uplift of underground structures using cutoff walls
截断墙法降低地下结构地震液化上浮 |
| 2. | Seismic liquefaction and its prevention measures for saturated sand
饱和砂土地震液化及治理措施 |
| 3. | Calculation and analysis of large ground displacement induced by seismic liquefaction
地震液化诱发地面大位移的计算分析 |
| 4. | Seismic liquefaction hazards of saturated sand and analysis of liquefaction mechanism
饱和砂土地震液化危害及液化机理分析 |
| 5. | Earthquake - induced liquefaction and pore water pressure based on cusp catastrophe model
基于尖点突变模型的地震液化和孔压研究 |
| 6. | On the basis of measured data of earthquake liquefaction and damage quantity , this thesis set forth artificial neural network models of estimation and grade evaluation of liquefaction , which take versatile factors into account
本文依据地震液化及其危害程度实测资料，综合考虑多方面因素，建立了液化判别及等级评价的人工神经网络模型。 |
| 7. | The innovation of multiple mechanism boundary surface plasticity model is that the effect of rotation of principal stress axial directions and large shear displacement of sand in the earthquake induced liquefaction are taken into account at the same time in the model
独到之处在于所建立的多机构边界面塑性模型能够同时考虑土体在复杂荷载作用下主应力轴旋转的影响和砂土地震液化时剪切大位移特性。 |
| 8. | Based on the plasticity theory , combined with test results in laboratory , the deformation disciplinarians of sand in the earthquake induced liquefaction are discussed , a new model is proposed , and validation & analysis are performed with the new model in this study
本文在塑性力学的理论基础上，探讨了以上问题的不足。结合室内试验分析结果，探讨了砂土地震液化的变形规律，提出了新的本构模型，并对模型进行验证和分析。 |
| 9. | When it comes to the research about the post - liquefaction behavior of saturated sand , the situation is not so famous . the current research is supported by the national science foundation project of large ground displacement due to seismic liquefaction ( no . 59809004 ) , and in this thesis the basic aspects about the post - liquefaction behavior of saturated sand has been thoroughly investigated . the main contents of the current research are as follows : in order to investigate the behavior of saturated sand , a multi - functional tri - axial test equipment has been designed
饱水砂土地震液化引起的地面大变形会对液化区的各种结构产生灾难性的破坏，在过去的几次大地震中均发现有因地面大变形而导致的破坏现象，但目前对该问题的研究较为欠缺，有关饱水砂土液化问题现有的研究基本都局限在初始液化之前，在饱水砂土地震液化的影响因素、产生的机理及条件、液化势的判别等方面积累了大量的研究成果，而液化后问题的研究才处于起步阶段。 |
| 10. | 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
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。 |
