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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Interpretation from large-scale shake table tests on piles undergoing lateral spreading in liquefied soils
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Interpretation from large-scale shake table tests on piles undergoing lateral spreading in liquefied soils

机译：大型振动台试验对液化土壤中横向扩散桩的解释

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Results from a benchmark test on full-scale piles are used to investigate the response of piles to lateral spreading. In the experiment, two single piles, a relatively flexible pile that moves together with the surrounding soil and a relatively stiff pile that does not follow the ground movement have been subjected to large post-liquefaction ground displacement simulating piles in laterally spreading soils. The observed response of the piles is first presented and then the results are used to examine the lateral loads on the pile from a non-liquefied soil at the ground surface and to evaluate the stiffness characteristics of the spreading soils. The measured ultimate lateral pressure from the crust soil on the stiff pile was about 4.5 times the Rankine passive pressure. The back-calculated stiffness of the liquefied soil was found to be in the range between 1/30 and 1/80 of the initial stiffness of the soil showing gradual decrease in the course of lateral spreading.
机译：对全尺寸桩进行基准测试的结果用于研究桩对横向扩展的响应。在实验中，两个单桩，一个与周围土壤一起移动的相对柔软的桩和一个不跟随地面运动的相对坚硬的桩在横向扩散的土壤中经受了大的液化后地面位移模拟桩。首先介绍观察到的桩的响应，然后将结果用于检查地面上非液化土壤在桩上产生的侧向载荷，并评估传播土的刚度特性。从硬桩上的地壳土壤测得的极限侧向压力约为朗肯被动压力的4.5倍。发现液化土的反算刚度在土体初始刚度的1/30到1/80之间，在横向扩展过程中逐渐降低。

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