福州长乐国际机场场地动力特性及稳定性研究  

Experimental study on dynamic characteristics of sand in Fuzhou Airport

作　　者：王小桃 程旭日 冯雨顺 黎章 童晨曦 张升[3] WANG Xiaotao;CHENG Xuri;FENG Yushun;LI Zhang;TONG Chenxi;ZHANG Sheng(Fujian Panport Airport Construction Co.,Ltd.,Xiamen 361016,China;Fujian Zhaoxiang Airport Construction Co.,Ltd.,Fuzhou 350200,China;School of Civil Engineering,Central South University,Changsha 410075,China)

机构地区：[1]福建兆翔机场建设有限公司,福建厦门361006 [2]元翔(福州)国际空港有限公司,福建福州350209 [3]中南大学土木工程学院,湖南长沙410075

出　　处：《岩土工程学报》2023年第S02期98-103,共6页Chinese Journal of Geotechnical Engineering

基　　金：湖湘高层次人才聚集工程创新团队项目(2019RS1008)。

摘　　要：场地稳定性判别对于保障机场长期安全稳定服役具有重要意义。以福州长乐机场饱和砂土为研究对象,通过室内动三轴试验,探究其动力性能及影响因素,并采用室内试验和现场剪切波速测试方法对场地的抗液化能力进行了场地稳定性判别。研究结果表明场地砂土的动剪切模量比随围压增大而增大,阻尼比随围压增大而减小,土体动强度随围压增大而增大;两种场地液化判别方法在深度小于8 m具有良好的一致性,验证了室内试验测定现场场地稳定性的可行性。Site stability determination is of great significance to ensure the long-term safety and stable service of airports.The dynamic properties and influencing factors of the saturated sandy soil of Fuzhou Airport are investigated by using the dynamic triaxial tests,and the site liquefaction resistance is discriminated by the indoor and field tests.The results show that the dynamic shear modulus ratio of the sandy soil increases with the increase of the enclosing pressure,the damping ratio decreases with the increase of the enclosing pressure,and the dynamic strength of the soil increases with the increase of the enclosing pressure.The two site liquefaction discrimination methods have good consistency at depths less than 8 m,which verifies the feasibility of the indoor tests to determine site stability.

关 键 词：动三轴 动剪切模量比 阻尼比 液化判别 

分 类 号：TU472.3[建筑科学—结构工程]