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Effects of the back-filling to the stability of a caisson

机译：回填对沉箱稳定性的影响

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It is well known that using the back-filling to a caisson improves the stability of the caisson. But, the extent of the improvement of the stability is affected by the interaction among the back-filling and the caisson and the foundation. To reveal the effects of the interaction the model loading tests are carried out. The shape of the back-filling, the confining condition of the mound, and the loading point are changed in each test case. The applied load, the movement of the caisson, and the deformation of both the back-filling and the mound are measured. Discussions as to the test results on the existing design method, failure mode, and the sliding resistnace are made. They show that the existing design method is not enough to explain the effect of back-filling. Finally new design method is presented in this paper.
机译：众所周知，对沉箱使用回填可提高沉箱的稳定性。但是，回填与沉箱和地基之间的相互作用会影响稳定性的提高程度。为了揭示交互作用的影响，进行了模型加载测试。在每个测试案例中，回填的形状，土堆的限制条件和加载点均会发生变化。测量了施加的载荷，沉箱的运动以及回填土和土墩的变形。讨论了有关现有设计方法，破坏模式和滑动阻力的测试结果。他们表明，现有的设计方法不足以解释回填的效果。最后提出了一种新的设计方法。

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