基于侧向打桩挤土及注浆加固的沉降路基修复工法  

Subgrade Settlement Repair Method Based on the Lateral Piling Compaction and Grouting Reinforcement

作　　者：李佳坤[1] 陈远川[1] 

机构地区：[1]重庆文理学院建筑工程学院,重庆402160

出　　处：《价值工程》2015年第28期133-135,共3页Value Engineering

基　　金：重庆市前沿与应用基础研究科技项目"山区沿河公路水毁风险评估理论与方法"(课题编号:cstc2014jcyj A30019);重庆文理学院科技项目"山区公路地质灾害防治理论及灾害治理技术研究"(课题编号:R2013JG10)

摘　　要：根据道路沉降变形和破坏问题的工程处治需求,将水平侧向打桩的挤土效应和注浆的化学加固效应有效结合,提出一种工程实用的路基沉降修复工法。通过路基侧向近水平方向的打桩来挤密路基填料,使路基在竖直方向上挤高膨胀,恢复竖向沉降变形。通过在预制桩中预留压力灌浆通道和孔洞,使注浆加固更加便利和有效,通过压力灌浆体的化学加固效应进一步修复路基岩土体结构的强度、刚度和稳定性。本方法可推广应用于路基水毁修复工程。According to engineering treatment requirements of the deformation and failure of subgrade settlement, the horizontal lateral piling compaction is effectively combined with the chemical reinforcement effect of grouting to put forward a kind of utility engineering subgrade settlement repair method. The roadbed filling is compacted by the subgrade lateral piling to make the subgrade crowded high and inflation in vertical direction and restore vertical subsidence deformation. By reserving pile pressure grouting channels and holes in the precast, the grouting reinforcement is more convenient and effective. The strength, stiffness and stability of the subgrade ground structure is further repaired by the chemical reinforcement effect of pressure grouting body. The method can be applied to the water damage repair engineering of subgrade.

关 键 词：道路工程 路基沉降 路基修复 侧向打桩挤土 注浆加固 

分 类 号：U213.15[交通运输工程—道路与铁道工程]