地基/路基不均匀沉降防治研究现状及分析  

Research Status and Analysis on Control of Differential Settlement of Foundation or Subgrade

作　　者：刘萌成[1] 周佳俊 LIU Meng-cheng;ZHOU Jia-jun(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学土木工程学院,杭州市310023

出　　处：《公路》2023年第2期19-24,共6页Highway

基　　金：浙江省基础公益研究计划项目,项目编号LGF22E080031、LGG20E080003;杭州市市政行业协会创新课题,项目编号HSZY20210213。

摘　　要：地基/路基不均匀沉降严重影响道路、铁路和地铁等交通基础设施的正常运营。为探究不均匀沉降防治研究现状,通过文献搜集、整理,对当前不均匀沉降防治措施进行了系统梳理,主要概述了目前较为常用的6种不均匀沉降防治技术(包括表面加铺、土工加筋、桥头搭板、轻质回填、压力注浆和膨胀顶升)的研究现状,并详细分析了各项技术的适用条件及优缺点。同时指出,轻质回填、微扰动注浆和膨胀顶升3项技术具有较大优势,已成为当前不均匀沉降防治研究热点。但在轻质回填和膨胀可控新材料开发及工程性质方面,仍需深入、系统地开展大量试验研究工作。The uneven settlement of foundation/subgrade seriously affects the normal operation of transportation infrastructure such as roads, railways and subways. To explore the research status of control of differential settlement, the current control measurements are systematically sorted out by collecting and looking through of literature, and six control measurements of differential settlement are summarized, such as surface overlaying, geotechnical reinforcement, approach slab of bridge, lightweight backfill, grouting and expansion jack-up. Their suitable conditions, the advantages and disadvantages are analyzed in detail, and meanwhile it is pointed out that three technologies of lightweight backfills, micro-perturbation grouting and expansion jack-up have become the current research hotspots for the prevention and control of uneven settlement, however, there is still a lot of in-depth and systematic research work in the development and engineering properties of lightweight backfill and expansion controllable new materials.

关 键 词：地基/路基基础 不均匀沉降 轻质回填 微扰动注浆 膨胀顶升 

分 类 号：U416.1[交通运输工程—道路与铁道工程] TU47[建筑科学—结构工程]