震动液化间接测试技术在吉林西部砂土地层中的应用
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摘要
鉴于目前常用的剪切波速测试法、液性指数法和原位测试法等进行砂土震动液化的复判方法存在弊端,本文提出标准贯入击数--锥尖阻力复判法(qc--N复判法)及瑞利波法等间接测试击数的方法进行砂土震动液化判别。通过理论计算及实例验证表明,判别结果与相对密度法测得结果一致,同时具有工作效率高、生产成本低的优点,有较高的实际应用价值。
Because the shear wave velocity testing,liquid index and in situ testing methods have shortcomings in judging the vibrate liquefaction of sand,qc——N discriminance and Rayleigh wave methods are proposed to distinguish sand vibrate liquefaction by testing blow count indirectly.Theoretical calculation and examples show that its results are the same with the testing results of relative density method.Meanwhile,it has higher efficient in work,lower cost in production,and more valuable in practical applications.
Because the shear wave velocity testing,liquid index and in situ testing methods have shortcomings in judging the vibrate liquefaction of sand,qc——N discriminance and Rayleigh wave methods are proposed to distinguish sand vibrate liquefaction by testing blow count indirectly.Theoretical calculation and examples show that its results are the same with the testing results of relative density method.Meanwhile,it has higher efficient in work,lower cost in production,and more valuable in practical applications.
引文
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[11]张喜发.岩土工程勘察与评价[M].长春:吉林科学技术出版社,1995:166,167.ZHANG Xi-fa.Geotechnical engineering investigationand evaluation[M].Changchun:Jilin Science andTechnology Press,1995:166,167.
[2]薄景山,景立平.地震小区划中的土动力学问题[J].世界地质,1997,16(2):66-71.BO Jing-shan,JING Li-ping.On the problems of soil dy-namics related to seismic microzonation[J].Global Ge-ology,1997,16(2):66-71.
[3]宋宝玉,司富安.哈达山水利枢纽坝基砂层震动液化研究[J].工程地质学报,2003,11(3):275-279.SONG Bao-yu,SI Fu-an.Study on shock liquefaction ofsand layers below dam foundation of the Hadashan waterconservancy project[J].Journal of Engineering Geolo-gy,2003,11(3):275-279.
[4]冯伟,李斌,李占军,等.大顶子山工程土坝段砂土振动液化判别的新思路[J].水运工程,2008,415(5):29-32.FENG Wei,LI Bin,LI Zhan-jun.New train of thoughtfor judgment of sand soil vibrating liquefaction at earthdam section of Dadingzishan engineering[J].Port&Waterway Engineering,2008,415(5):29-32.
[5]杨玉生,刘小生,刘启旺,等.地基砂土液化判别方法探讨[J].水利学报,2010,41(9):1061-1068.YANG Yu-sheng,LIU Xiao-sheng,LIU Qi-wang,et al.Study on the method for evaluating sand liquefaction po-tential[J].Journal of Hydraulic Engineering,2010,41(9):1061-1068.
[6]曹宇清,武志飞,李安生.砂土液化研究概述[J].山西建筑,2009,35(8):100,101.CAO Yu-qing,WU Zhi-fei,LI An-sheng.General intro-duction of the liquefaction study of sand soil[J].ShanxiArchitecture,2009,35(8):100,101.
[7]黄志全,姚海慧,王玲玲,等.砂土液化判别的液化系数法[J].华北水利水电学院学报,2005,26(3):47-50.HUANG Zhi-quan,YAO Hai-hui,WANG Ling-ling,etal.Liquefaction coefficient method on the judgment ofsandy soil liquefaction[J].Journal of North China In-stitute of Water Conservancy and Hydroelectric Power,2005,26(3):47-50.
[8]刘建炎,李景林,吴春勇,等.吹填砂土地基的不同加固方法效果评价[J].世界地质,2006,25(1):81-85.LIU Jian-yan,LI Jing-lin,WU Chun-yong,et al.Evalu-ation of different reinforcement methods for treating abarged-in fall sandy soil foundation[J].Global Geology,2006,25(1):81-85.
[9]李平,纪真平,赵占久.天津泰达地区粉土振动液化特性的研究[J].水文地质工程地质,2004,5:84-87.LI Ping,JI Zhen-ping,ZHAO Zhan-jiu.Research on vi-brating liquefaction of sandy soil in Tianjin area[J].Hydrogeology&Engineering Geology,2004,5:84-87.
[10]蔡耀军,赵旻,马贵生,等.南水北调中线工程地质综述[J].人民长江,2005,36(10):1-3.CAI Yao-jun,ZHAO Min,MA Gui-sheng,et al.Engi-neering geological summarization of the middle route pro-ject of S-N water transfer[J].Yangtze River,2005,36(10):1-3.
[11]张喜发.岩土工程勘察与评价[M].长春:吉林科学技术出版社,1995:166,167.ZHANG Xi-fa.Geotechnical engineering investigationand evaluation[M].Changchun:Jilin Science andTechnology Press,1995:166,167.
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