ISA-Hypoplasticity accounting for cyclic mobility effects for liquefaction analysis
ISA-Hypoplasticity accounting for cyclic mobility effects for liquefaction analysis
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DOI：
10.1007/s11440-019-00846-2
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发表时间：
2020-06-01
期刊：
影响因子：
5.7
通讯作者：
Lascarro, Carlos
中科院分区：
文献类型：
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作者：
Fuentes, William;Wichtmann, Torsten;Lascarro, Carlos
Wolffersdorff提出的砂土亚塑性模型（Mech Cohes Matter 1：251-271，1996）与Fuentes和Triantafyllidis提出的粒间应变各向异性（Int J Numer Anal Meth Geomech 39：1235-1254，2015）相结合，在本文中进行了扩展，以考虑循环流度效应，从而模拟液化现象。该扩展是基于引入一个额外的状态变量，允许循环移动路径的检测。模型的模拟能力与卡尔斯鲁厄细砂的不排水三轴试验进行了比较。最后，建立了一个埋在沙子中的离岸平台在加勒比海环境力作用下的有限元模拟模型，并进行了分析。
The hypoplastic model for sands proposed by Wolffersdorff (Mech Cohes Frict Mater 1: 251-271, 1996) combined with the intergranular strain anisotropy by Fuentes and Triantafyllidis (Int J Numer Anal Meth Geomech 39: 1235-1254, 2015) is herein extended to account for cyclic mobility effects to allow for the simulation of liquefaction phenomena. The extension is based on the introduction of an additional state variable that permits the detection of cyclic mobility paths. The simulation capabilities of the model is compared with undrained triaxial tests of Karlsruhe fine sand. At the end, a finite element simulation of an offshore monopile embedded in sand, exposed to environmental forces from the Caribbean Sea, is constructed and analyzed.