地下结构物对饱和砂土地基液化的影响
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摘要
以我国东南沿海地区砂土地层大型地铁站为背景,进行了自由场和埋设地下结构物的饱和砂土地基动力离心模型试验,对比分析了强震作用下两种模型不同深度的地基加速度、超孔隙水压力及地基沉降等变化规律,数据结果显示埋设地下结构物的饱和砂土层地基相比于自由场相同位置的砂土层地基更易发生液化,提升了人们对地下结构物影响砂土液化效果的认识.
Based on the background of large subway station of Southeast coastal of China in the sandy soil,two groups of centrifuge dynamic tests on saturated sand deposits with and without underground structure model were performed.The results of acceleration,excess pore water pressure in different depth and the settlement of foundation were analyzed.The results showed that the sand foundation with the underground structure model is more likely to liquefy in the same depth.
Based on the background of large subway station of Southeast coastal of China in the sandy soil,two groups of centrifuge dynamic tests on saturated sand deposits with and without underground structure model were performed.The results of acceleration,excess pore water pressure in different depth and the settlement of foundation were analyzed.The results showed that the sand foundation with the underground structure model is more likely to liquefy in the same depth.
引文
[1]佘才高.南京地铁南北线隧道地基的地震液化问题[J].城市轨道交通研究,2001,(3):38-42.
[2]CHOU H S,YANG C Y,Hsieh B J,et al.A Study of Liquefac-tion Related Damages on Shield Tunnels[J].Tunneling and Un-derground Space Technology,2001(16):185-193.
[3]Leung C F,Lee F H,Tan T S.Principles and Applications ofGeotechnical Centrifuge Model Testing[J].Journal of the Insti-tution of Engineers,Singapore,1991,31(7):39-45.
[4]Su Dong.Centrifuge Investigation on Response of Sand Depositand Sand-pile System Under Multi-directional EarthquakeLoading[D].Hong Kong:The Hong Kong University of Scienceand Technology,2005.
[5]封渊惟.埋设地下结构物的砂土地层液化离心机试验及数值分析[D].上海:同济大学,2011.
[6]谢定义.饱和土体液化的若干问题[J].岩土工程学报,1992,14(3):90-98.
[7]陈小亮.地下结构物周围砂土层液化宏细观机理研究[D].上海:同济大学,2011.
[8]Gregg L.Fiegel,Bruce L.Kutter.Liquefaction Mechanism forLayer Soils.Journal of Geotechnical Engineering,1994,120(4).
[2]CHOU H S,YANG C Y,Hsieh B J,et al.A Study of Liquefac-tion Related Damages on Shield Tunnels[J].Tunneling and Un-derground Space Technology,2001(16):185-193.
[3]Leung C F,Lee F H,Tan T S.Principles and Applications ofGeotechnical Centrifuge Model Testing[J].Journal of the Insti-tution of Engineers,Singapore,1991,31(7):39-45.
[4]Su Dong.Centrifuge Investigation on Response of Sand Depositand Sand-pile System Under Multi-directional EarthquakeLoading[D].Hong Kong:The Hong Kong University of Scienceand Technology,2005.
[5]封渊惟.埋设地下结构物的砂土地层液化离心机试验及数值分析[D].上海:同济大学,2011.
[6]谢定义.饱和土体液化的若干问题[J].岩土工程学报,1992,14(3):90-98.
[7]陈小亮.地下结构物周围砂土层液化宏细观机理研究[D].上海:同济大学,2011.
[8]Gregg L.Fiegel,Bruce L.Kutter.Liquefaction Mechanism forLayer Soils.Journal of Geotechnical Engineering,1994,120(4).
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