京沪高速铁路真空联合堆载预压加固软基质量控制建筑本科毕业论文93dzxf5h.doc

京沪高速铁路真空联合堆载预压加固软基质量控制 摘 要 为对真空预压法加固软基施工实现有效控制，结合天津碱厂搬迁改造软地基处理工程（真空预压）实例，对真空预压法加固软基的过程和结果进行了实验、监测分析，得出了结论：真空预压的实施和传递主要由两部分组成，间距为1m的塑料排水板形成的竖向通道和φ75PVC塑料管、300mm厚砂垫层组成的水平方向通道，通过真空预压加固的软基达到了设计要求，我单位运用真空预压处理软基是成功的 关键词：软土地基 真空预压 变形分析 加固效果 Abstract For the vacuum preloading method for reinforcement of soft foundation construction to achieve effective control, combined with the relocation of Tianjin Soda Plant transformation of the soft ground treatment works (pre-vacuum pressure) example of the vacuum preloading method for reinforcement of soft foundation of the process and results of the experiment, monitoring and analysis, come to the conclusion: the implementation of vacuum，preloading and delivery of two key components, spacing of 1m of plastic drainage plate vertical channels and the formation of soft plastic tube φ63 water, 400mm thick sand cushion composed of horizontal channels, reinforced by vacuum preloading soft Quetta to the design requirements, I use vacuum preloading unit to deal with soft ground to be successful Keywords: Soft Ground deformation analysis of vacuum preloading consolidation effect 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc227259841 摘 要 PAGEREF _Toc227259841 \h 3 HYPERLINK \l _Toc227259842 第一章 京沪高速铁路运用真空堆载联合预压工程概况 PAGEREF _Toc227259842 \h 6 HYPERLINK \l _Toc227259843 第一节 工程范围 PAGEREF _Toc227259843 \h 6 HYPERLINK \l _Toc227259844 第二节 工程自然地理特征 PAGEREF _Toc227259844 \h 6 HYPERLINK \l _Toc227259845 一、地形地貌及地质特征 PAGEREF _Toc227259845 \h 6 HYPERLINK \l _Toc227259846 二、主要河流、水系特征及水文特征 PAGEREF _Toc227259846 \h 6 HYPERLINK \l _Toc227259847 三、现场实验各层土物理力学性能指标 PAGEREF _Toc227259847 \h 6 HYPERLINK \l _Toc227259848 四、京沪高速铁路真空堆载联合预压软基处理示意图 PAGEREF _Toc227259848 \h 7 HYPERLINK \l _Toc227259849 第二章 京沪铁路真空堆载联合预压施工工艺 PAGEREF _Toc227259849 \h 8 HYPERLINK \l _Toc227259850 第一节 施工前的准备工作 PAGEREF _Toc227259850 \h 8 HYPERLINK \l _Toc227259851 第二节 真空预压隔水墙搅拌桩施工 PAGEREF _Toc227259851 \h 8 HYPERLINK \l _Toc227259852 第三节 填铺砂垫层施工 PAGEREF