粉细砂层盾构隧道地基的地震液化判别
|
摘要
以有效应力原理的有限元计算分析为主、铁路工程抗震设计规范及室内动三轴实验为辅 ,对修建在粉土或粉细砂层中的盾构隧道进行了两种不同埋深情况下的液化分析 ,得出了埋深不同液化区出现区域不同的结论 ,并提出隧道抗液化的合理埋深
In this paper,the efficient stress method is used as main means, while the Railway Engineering Anti Earthquake Design Specification and the dynamic triaxial test are used as additional means. The authors analyze the ground layer liquefaction of shield tunnelling built on powder soil or fine sand, whose top plate is buried under two kinds of depth,and conclude that the liquefaction area is different with different buried depth. Finally, the rational buried depth is proposed.
In this paper,the efficient stress method is used as main means, while the Railway Engineering Anti Earthquake Design Specification and the dynamic triaxial test are used as additional means. The authors analyze the ground layer liquefaction of shield tunnelling built on powder soil or fine sand, whose top plate is buried under two kinds of depth,and conclude that the liquefaction area is different with different buried depth. Finally, the rational buried depth is proposed.
引文
[1 ]宫全美 .灰坝的动力稳定分析及工程应用 [D].杭州 :浙江大学 .1 995 .
[2 ]宫全美 ,周顺华 ,等 .南京地铁一号线区间隧道地基地震液化研究报告 [R].上海 :上海铁道大学 ,1 999
[2 ]宫全美 ,周顺华 ,等 .南京地铁一号线区间隧道地基地震液化研究报告 [R].上海 :上海铁道大学 ,1 999
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心