既有挡土墙加固关键技术研究  

Study on Key Technologies for Reinforcing an Existing Retaining Wall

作　　者：袁报 王伟 苏谦[3] YUAN Bao;WANG Wei;SU Qian(North Survey and Design Co.,Ltd.of CREEC,Jinan 250000,China;China Railway Jinan Bureau Group Co.,Ltd.,Jining 272100,China;Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]中铁二院北方勘察设计有限责任公司,济南250000 [2]中国铁路济南局集团有限公司,山东济宁272100 [3]西南交通大学,成都610031

出　　处：《高速铁路技术》2024年第2期108-112,共5页High Speed Railway Technology

摘　　要：本文依托某挡土墙加固工程,结合实施环境、项目实施工期、安全、经济、技术等因素对加固方案进行了综合比选,选用扰动小的拼接螺旋钢桩进行地基加固处理,选择轻型悬臂式挡土墙结构方案,采用自钻锚杆将既有浆砌片石挡土墙与悬臂式挡土墙进行连接,打通泄水孔,加强现场监测,最终确定合理的路基结构形式。本研究为类似挡墙加固工程提供了借鉴案例。Based on this retaining wall reinforcement project,combined with the implementation environment,project implementation period,safety,economy,technology and other factors,this paper makes a comprehensive comparison and selection of reinforcement schemes,selects spliced spiral steel piles with little disturbance for foundation reinforcement,selects the light cantilever retaining wall structure scheme,uses self-drilling anchor rods to connect the existing mortar rubble retaining wall with the cantilever retaining wall,opens drainage holes,strengthens on-site monitoring,and finally determines a reasonable subgrade structure form.It provides a reference case for similar retaining wall reinforcement projects.

关 键 词：拼接螺旋钢桩 自钻锚杆 悬臂式挡土墙 泄水孔 

分 类 号：U417.1[交通运输工程—道路与铁道工程]