[1]朱俊,梁建文.饱和土-隧道动力相互作用对地震动土作用和孔隙动水压力的影响[J].自然灾害学报,2018,27(06):066-74.[doi:10.13577/j.jnd.2018.0609]
 ZHU Jun,LIANG Jianwen.Effects of dynamic soil-tunnel interaction on seismic soil pressures and pore pressures[J].,2018,27(06):066-74.[doi:10.13577/j.jnd.2018.0609]
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饱和土-隧道动力相互作用对地震动土作用和孔隙动水压力的影响
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
27
期数:
2018年06期
页码:
066-74
栏目:
出版日期:
2018-12-28

文章信息/Info

Title:
Effects of dynamic soil-tunnel interaction on seismic soil pressures and pore pressures
作者:
朱俊12 梁建文12
1. 天津大学 水利工程仿真与安全国家重点实验室, 天津 300354;
2. 天津大学 建筑工程学院土木工程系, 天津 300354
Author(s):
ZHU Jun12 LIANG Jianwen12
1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300354, China;
2. Department of Civil Engineering, Tianjin University, Tianjin 300354, China
关键词:
饱和两相介质间接边界元方法土-隧道动力相互作用土骨架-孔隙水耦合地震动土作用孔隙动水压
Keywords:
water-saturated poroelastic mediumindirect boundary element methoddynamic soil-tunnel interactionsolid frame-pore water couplingseismic soil pressureseismic pore pressure
分类号:
X43;X93;TU93
DOI:
10.13577/j.jnd.2018.0609
摘要:
本文利用间接边界元方法,研究了饱和土-隧道动力相互作用对隧道地震动土作用和孔隙动水压力的影响,考虑了不同隧道质量和埋深,以及地震波斜入射情况。饱和场地根据Biot理论模拟为两相介质,通过将饱和两相介质模型所得隧道地震动土作用与单相介质模型结果进行比较,分析了饱和土骨架和孔隙水动力耦合作用的影响。结果表明,饱和土-隧道动力相互作用对地震动土作用有明显放大效应,本文算例中,隧道水平地震动土作用较自由场结果最大放大1.7倍,竖向地震动土作用较自由场结果最大放大1.6倍;饱和土骨架和孔隙水的动力耦合作用对隧道地震动土作用大小也有显著影响,本文算例中,单相介质模型所得地震动土作用较饱和两相模型的最大差别可达210%。
Abstract:
This paper investigates the effects of dynamic soil-tunnel interaction on seismic soil pressures and pore pressures using an indirect boundary element method. The results are presented for different tunnel mass and tunnel buried depths as well as for different incident angles of the seismic wave. The water-saturated poroelastic half-space is modelled as a two-phase medium based on the Biot’s theory. Furthermore, comparisons of the seismic soil pressure between the water-saturated half-space case and the single-phase half-space case are made to investigate the effect of solid frame-pore water coupling. It is shown that the seismic soil pressure is evidently amplified due to dynamic soil-tunnel interaction, and the horizontal soil pressure on the tunnel can be 1.7 times larger than that of the free field while the vertical soil pressure can be 1.6 times larger. It is also shown that the solid frame-pore water coupling has a significant influence on the magnitude of the seismic soil pressure, and the maximum difference between the two-phase medium model and the single-phase medium model is up to 210% in this paper.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-09-15;改回日期:2018-10-20。
基金项目:国家自然科学基金项目(51578372)
作者简介:朱俊(1989-),女,博士研究生,主要从事地震工程研究.E-mail:zhujuncq@163.com
通讯作者:梁建文(1965-),男,教授,博士,主要从事地震工程研究.E-mail:liang@tju.edu.cn
更新日期/Last Update: 1900-01-01