高桩码头岸坡变形加固技术研究及方案优化  

Analysis and optimization of reinforce technology for high-piled wharf slope deformations

作　　者：李越松[1] 焉振[1] 张强[1] LI Yue-song;YAN Zhen;ZHANG Qiang(Tianjin Research Institute for Water Transport Engineering, National Engineering Laboratory for Port Hydraulic Construction Technology, Key Laboratory of Harbor ＆ Marine Structure Safety,Ministry of Transport, Tianjin 300456, Chin)

机构地区：[1]交通运输部天津水运工程科学研究所港口水工建筑技术国家工程实验室水工构造物检测诊断与加固技术交通行业重点实验室,天津300456

出　　处：《水道港口》2018年第2期181-187,共7页Journal of Waterway and Harbor

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(TKS140210)

摘　　要：针对软土地区高桩码头的岸坡变形问题,提出MCDM挡土墙、CDM格构式挡土墙、钻孔灌注挡土桩三种加固方案。以有限元软件ABAQUS为分析平台,建立高桩码头与土相互作用的三维弹塑性蠕变有限元模型,对比分析蠕变影响下三种加固方案的码头基桩桩身水平位移、桩身应力以及土体水平位移、沉降等,研究确立MCDM挡土墙为三种加固方案的最优化方案。进一步从MCDM挡土墙施工可行性及经济性进行论证,建议实际工程中采用MCDM挡土墙作为码头岸坡加固方案。Three schemes including the MCDM retaining wall,the CDM lattice retaining wall and the bored retaining piles were proposed respectively to reinforce the high-piled wharf slope and decrease the deformation. 3D elastic-plastic-creep analysis models of the high-piled wharf were established with finite element software ABAQUS.The horizontal displacement and stress status of the wharf piles,the horizontal displacement and settlement of the slope soil under three reinforce schemes were analyzed and contrasted. The MCDM retaining wall is considered to be the optimum scheme as a result of relatively small deformation and reasonable stress status. Further discussions are conducted on the construction feasibility and economical efficiency,and the MCDM retaining wall is suggested to be employed in practical engineering.

关 键 词：高桩码头 岸坡变形加固 有限元 方案优化 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]