Earthquake-Induced Deformation Analysis of a Bridge Approach Embankment in Missouri
Earthquake-Induced Deformation Analysis of a Bridge Approach Embankment in Missouri
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DOI：
10.1007/s10706-011-9421-1
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发表时间：
2011-06
影响因子：
1.7
通讯作者：
W. Liu;R. Luna;R. Stephenson;S. Wang
中科院分区：
文献类型：
--
作者：
W. Liu;R. Luna;R. Stephenson;S. Wang
本文采用校正后的数值模型对某桥梁靠近土路堤的地震变形进行了预测。土的本构模型是一种修正的双曲模型，它采用了Masing规则和增量孔压关系。该模型使用实验室和现场数据进行校准。采用振动台物理模型对数值模拟结果进行了验证。此外，对圣费尔南多上游大坝进行了模拟，重现了1971年地震中的变形。采用现场和实验室方法对地下和路堤土壤条件进行了表征。开发的模型用于预测密苏里州海提附近NMSZ A1466桥的引路路堤的地震引起的变形，该地区预计在未来50年内会发生7.0级的强烈地震。
Earthquake-induced deformations for a bridge approach earth embankment are predicted using a calibrated numerical model. The constitutive soil model is a modified hyperbolic model that uses Masing rules and incremental pore pressure relations. The model was calibrated using both laboratory and field data. A shaking table physical model was used to verify the numerical simulation. Additionally, the upper San Fernando dam was modeled to reproduce the deformations in the 1971 earthquake. The subsurface and embankment soil conditions were characterized using field and laboratory methods. The model developed was used to predict the earthquake-induced deformations of an approach embankment to Bridge A1466 in the NMSZ near Hayti, Missouri, where strong earthquakesM> 7.0 are anticipated in the next 50 years.