2011年4月下 施工技术 第40卷第339期 CONSTRUCTION TECHNOLOGY 93 某京沪高铁软土路基PHC管桩桩网结构施工技术 谢大伟，陈利民 (上海铁路局南京桥工段，江苏南京210015) [摘要]PHC管桩桩网结构由加筋土、复合操垫层和桩土加固区三部分组成，对其加固机理进行研究.通过PHC 管柱桩网结构在京沪高铁路基工程中的应用，对PHC管桩桩网结构处理软土地基的施工工艺、质量控制要点及注 意事项、加固处理效果进行了详细述.实践证明，PH管桩桩网加固的复合地基具有良好的承载能力，地基沉降 满足要求，取得良好效果. [关键词]京泸高铁：PHC管桩桩网；软基处理；加固效果 [中图分类号]TU755.3;U443.15 [文献标识码]A[文章编号]1002-8498(2010)11-0093-03 Construction Technology of PHC Tube Pile-net Structure in Soft Soil Foundation Treatment of Beijing-Shanghai High-speed Railway Xie Dawei Chen Limin Nanjing Bridge Section of Shanghai Railway Bureau Nanjing Jiangsu 210015 China) Abstract:PHC tube pile-net structure consists of reinforced earth posite cushion and pile-soil reinforcement area.The reinforcement mechanism of PHC tube pile-net structure is researched.Based on Beijing-Shanghai high-speed railway construction technology quality control points and attention factors of PHC tube pile-net structure are introduced as well as reinforcement effect.It proves that good bearing capacity of posite foundation is gained by reinforcing with PHC tube pile-net structure and the settlement of foundation is controlled in allowable range.Furthermore good reinforcement effect of the posite foundation in high-speed railway can be gained. Key words:Beijing-Shanghai high-speed railway:PHC tube pile-net;soft soil foundation treatment; reinforcement effect 软土、松软土在我国沿海、沿湖、沿河等地带有 外加装 广泛分布，而长三角、珠三角和环渤海地区普遍分布 受 有湖相、海相及近海冲洪积软弱土层，其面积广、厚 度大、工程性质差，给我国这些地区正如火如茶大规 土 模建设的高速铁路、客运专线带来了严重...
某京沪高铁软土路基PHC管桩桩网结构施工技术.pdf
