振挤碎石桩处理液化地基问题原因分析及对策  

Reason Analysis and Countermeasures for Liquefied Foundation Treatment with Vibrating Crushed Stone Piles

作　　者：陈正元 柴朝生 CHEN Zhengyuan;CHAI Chaosheng(Geothermal Energy Development and Utilization Co.,Ltd.,Zhengzhou,He’nan,450053,China;Ecological Environment Geological Service Center of He’nan Geological Bureau,Zhengzhou,He’nan,450003,China)

机构地区：[1]河南省地热能开发利用有限公司,河南郑州450053 [2]河南省地质局生态环境地质服务中心,河南郑州450003

出　　处：《工程建设（维泽科技）》2023年第9期160-162,共3页Engineering Construction

摘　　要：对某水厂振动沉管碎石桩(也称振挤碎石桩)下料困难和断桩问题进行了分析,从沉管成孔引起土体液化导致管底流动土体压力大于管底干碎石柱净压力,导致干碎石无法下料和断桩问题,提出了采用振动沉管气冲法、锤击法、振动沉管饱和碎石成桩法,解决了碎石桩下料问题。An analysis was conducted on the difficulty in cutting and breaking of the vibrating immersed tube gravel pile(also known as the vibrating crushed stone pile)in a certain water plant.The problem was solved by using the vibrating immersed tube air impact method,hammering method,and vibrating immersed tube saturated crushed stone pile formation method,which caused the soil liquefaction at the bottom of the tube to cause the soil pressure to be greater than the net pressure of the dry crushed stone column at the bottom of the tube,resulting in the inability to cut and break the dry crushed stone pile.

关 键 词：振动沉管 碎石桩 超孔隙水压力 液化 

分 类 号：TD472.32[矿业工程—矿山机电]