LEAP-ASIA-2019: Validation of centrifuge experiments and the generalized scaling law on liquefaction-induced lateral spreading

LEAP-ASIA-2019: Validation of centrifuge experiments and the generalized scaling law on liquefaction-induced lateral spreading
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LEAP-ASIA-2019:离心机实验和液化引起的横向扩散的广义标度定律的验证

DOI:
10.1016/j.soildyn.2022.107237
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发表时间:
2022
影响因子:
4
通讯作者:
Iai, Susumu
Iai, Susumu
中科院分区:
工程技术2区
文献类型:
--
作者:
Tobita, Tetsuo;Ueda, Kyohei;Vargas, Ruben R.;Ichii, Koji;Okamura, Mitsu;Sjafruddin, Asri Nurani;Takemura, Jiro;Hang, Lyu;Uzuoka, Ryosuke;Iai, Susumu

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在国际液化试验与分析项目(LEAP)框架下,对同一饱和斜坡存款进行了不同初始条件下的离心模型循环试验。追求两个主要目标:(1)广义标度律(GSL)的验证;(2)补充实验数据的开发,以填补前LEAP的空白,每个研究所都被分配了两个原型规模相同的试验:一个遵循广义标度律的模型和一个遵循常规离心标度律的模型。试验结果表明,这些模型的动力学行为的显着匹配,这验证了GSL在给定条件下的适用性。然而,在本研究中,当地表地面变形变大时(即,250毫米)。与输入加速度的峰值幅度(PGAeff)、地面的相对密度(Dr_qc(2.0 m))和表面横向位移(Ux)相关的趋势面被更新并用新的数据集确认。
A round-robin centrifuge model test for an identical saturated sloping deposit with various initial conditions was conducted in the framework of liquefaction experiments and analysis project (LEAP) with 10 international institutes. To pursue two main objectives: (1) the validation of the generalized scaling law (GSL); and, (2) the development of additional experimental data that fill the gaps in the previous LEAP, each institute was assigned two tests, identical in prototype scale: a model following the generalized scaling law and a model following conventional centrifuge scaling law. The test results show a significant match in the dynamic behavior of these models, which validates the applicability of the GSL under given conditions. However, in this study, a deviation is observed when the surface ground deformation becomes larger (i.e., 250 mm). The trend surface that correlates peak amplitude of input acceleration (PGAeff), the relative density of the ground (Dr_qc(2.0 m)), and surface lateral displacement (Ux) is updated and confirmed with new data sets.
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