海岛地区管桩静压沉桩与固结数值模拟研究  

Numerical Simulation Study on Statically Pressed Sinking Pile and Consolidation of Pipe Piles in Island Area

作　　者：蔡军 毛力 冯浩清 马昊天 王哲[2] 宋佳峰 章韬 CAI Jun;MAO Li;FENG Haoqing;MA Haotian;WANG Zhe;SONG Jiafeng;ZHANG Tao(East China Engineering Consulting Co.,Ltd,311122,Hangzhou,PRC;Collge of Civil Engineering,Zhejiang University of Technology,310023,Hangzhou,PRC;Jinhua Duohu Central Business District Construction Investment Co.,Ltd,321000,Jinhua,Zhejiang,PRC)

机构地区：[1]华东工程咨询有限公司,杭州311122 [2]浙江工业大学土木工程学院,杭州310023 [3]金华市多湖中央商务区建设投资有限公司,浙江金华321000

出　　处：《江西科学》2022年第3期559-563,共5页Jiangxi Science

摘　　要：利用ABAQUS有限元,对海岛地区预制混凝土管桩静压施工以及工后桩周土体固结进行数值模拟。得到静压沉桩过程中桩周土体位移的变化规律,以及沉桩施工完成后桩周土体超孔隙水压力的产生与消散规律。结果显示,静压沉桩对桩周土体产生位移与孔隙水压力。推测沉桩对土体位移的影响范围约为8倍桩径;孔隙水压力的径向影响范围约为10倍桩径,消散需要约55 d。Abaqus platform is used to simulate the static pressure construction of precast concrete pipe pile and the consolidation of soil around the pile.The change law of displacement of soil around pile in the process of static pressure pile driving is obtained,and the generation and dissipation law of excess pore water pressure of soil around pile after pile driving is completed.The results show that the displacement and pore water pressure of soil around the pile are affected by static pressure driving.The radial influence range of displacement field is about 4~5 m,and the vertical influence range is about 1.5 m under the pile end;the radial influence range of pore water pressure is about 5 m,it takes 55 days to dissipate.

关 键 词：管桩 静压施工 数值模拟 位移 孔隙水压力 

分 类 号：TU475[建筑科学—结构工程]