滨海铁路深厚泥炭土路基DSM桩加固地基病害处理  

Research on Disease Treatment of Foundation Reinforced by DSM Piles in Deep Peat Soil Subgrade of Coastal Railway

作　　者：冯荣先 金军良 钟钙冰 程文才 叶锡钧[2] FENG Rongxian;JIN Junliang;ZHONG Gaibing;CHENG Wencai;YE Xijun(The First Engineering Company of CCCC Fourth Harbor Engineering,Co.,Ltd.,Guangzhou 510450,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]中交四航局第一工程有限公司,广州510450 [2]广州大学土木工程学院,广州510006

出　　处：《路基工程》2025年第2期202-208,共7页Subgrade Engineering

基　　金：国家自然科学基金项目(51908150)。

摘　　要：针对马来西亚某沿海铁路项目深厚泥炭土软基处理采用DSM桩加固路基施工过程中出现路基开裂的问题,通过现场调查和补充地层勘察,并结合施工监测结果,运用理论分析和数值模拟,探讨路基开裂机理;提出二次加固措施及治理方案,通过将路基中心区域DSM桩复合地基增设桩长至软土层底部,地基整体工后沉降能满足设计要求。For problems concerning the subgrade cracking in the treatment of foundation reinforced by DSM piles in deep peat soil subgrade of a coastal railway project in Malaysia,through on-site investigation and supplementary stratigraphic survey,combined with construction monitoring results,theoretical analysis and numerical simulation are used to explore the mechanism of subgrade cracking.The secondary reinforcement measures and treatment scheme are put forward.By increasing the pile length of DSM pile composite foundation in the central area of subgrade to the bottom of soft soil layer,the overall post-construction settlement of foundation can meet the design requirements.

关 键 词：铁路路基 深厚泥炭土 水泥搅拌桩 病害分析 施工监测 二次加固 稳定性 

分 类 号：U655[交通运输工程—港口、海岸及近海工程]