碎石桩排水抗液化的一种实用化解析解  

A practical analytic solution for reduction of soil liquefaction by gravel drains

作　　者：王四根[1] 廖名亮[1] 伍琪琳[1] WANG Si-gen;LIAO Ming-liang;WU Qi-lin(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China)

机构地区：[1]中交第四航务工程勘察设计院有限公司

出　　处：《水运工程》2019年第9期282-288,共7页Port & Waterway Engineering

摘　　要：碎石桩排水抗液化目前缺少简便且实用化的计算办法。在等应变砂井固结理论基础上,假定起始超静孔压按线性分布,给出了地震情况下碎石桩排水抗液化作用下的孔压比解答方法。为工程设计提供了一个简便可行的算法,采用径向平均孔压比计算即可满足工程需要。在与Onoue(1987)碎石桩排水原位试验结果对比的基础上,说明了该方法的可行性和偏差。对碎石桩排水抗液化设计参数选取提出了一些建议。There is currently no simple and practical calculation method for the anti-liquefaction of gravel pile drainage.Based on the consolidation theories for sand wells under equal strain condition,assumed that the initial excess pore water pressure is linearly distributed,the solution method of pore pressure ratio of gravel pile under drainage and liquefaction resistance under earthquake is given.A simple and feasible algorithm for engineering design is provided,which is recommended to use radial average pore pressure ratio to meet project needs.On the basis of the comparison with Onoue(1987)in-situ experimental results of gravel piles,the feasibility and deviation of the method are illustrated.Some suggestions are put forward for selection of design parameters of gravel drains to prevent liquefaction.

关 键 词：线性分布超静孔压 碎石桩 排水 抗液化 

分 类 号：U652.7[交通运输工程—港口、海岸及近海工程]