soil failure

The failure modes of the single tension pile to mainly have three kinds of the following: ( 1) Follow the pile-the soil side interface shears to break;

抗拔单桩的破坏模式主要有以下三种：（1）沿桩&土侧界面剪破；

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Frost damage is main cause for earth-retaining wall failure in seasonally frozen soil region.

冻害是季节冻土区挡土墙破坏的主要原因.

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Urban forest is an important branch in China forest reconstruction area and drought is the bottle-neck for environment restoration and urban forest construction. People have paid much attention on soil drying and afforestation failure caused by tree species improper selection.

城市森林是我国森林建设的重要领域，黄土高原城市森林建设和生态恢复与重建的关键限制环境因素是干旱缺水，树种选用不当引起土壤干化和造林失败等问题已引起人们的关注和重视。

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The triaxial extension test and the cyclic extension compression test are used in the research of soil failure under static tensile crack or cyclic tensile crack conditions to identify the development of tensile crack as well as shock crack in FEM analysis of embankments.

三轴拉伸试验和周期拉压试验，用于研究静力拉裂和周期加荷拉裂的破坏，在土石坝有限元分析中判别防渗体土料拉裂和震裂的发生与发展。

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According to the failure condition defined by soil deformations, the parameters of model are determined and the model is built up.

根据土的破坏条件，确定出相应参数并建立其尖点突变模型。

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Numerical Simulation for Heterogeneous Soil Failure Process under Compression

非均匀土体受压破坏数值模拟

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A valuable information that can be used to study mechanism of soil failure and improved further tractive performance of tracked vehicles is obtained from the process of plastic failure of the soil under the action of track link and the σ max~σ min figures.

计算得到的履带作用下的土体的塑性破坏过程和σ（max）～σ（min）图为研究土壤破坏机理和进一步改善履带车辆的牵引性能提供了参考资料。

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By simulating of the process of uniaxial tensile tests on a certain cohesive soil, the applicability of the brittle fracture model and the corresponding calculation method for tensile failure and crack development is verified.

通过对某压实黏土单轴拉伸试验成果的模拟计算，验证了构建的脆性断裂模型和有限元算法对土体拉伸破坏特性和裂缝发展过程的适用性。

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Failure of Highway in Expansive Soil Region and Engineering Design Countermeasure

膨胀土地区公路病害及其工程设计对策

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When it was tensile failure, the curve of stress-strain relationship was softening and the reinforcement only increased the angle of internal friction of soil.

当发生拉断破坏时，其应力-应变曲线为软化型，此时加筋仅增加土体的粘聚力分量；

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Therefore, the seabed soil failure due to the tidal current scour in the cable route area may occur to affect the safety of submarine cable buried in the seabed soil.

路由区海底土会因潮流冲刷作用而发生失稳破坏，影响埋设在海底土中海缆的安全。

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