狭窄空间中沉井拔桩施工技术的应用研究

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英文篇名：Application Research on the Construction Technology of Drawing out Pile from Open Caisson in Narrow Space 作者：贺婷 英文作者：HE Ting;Guangzhou Railway Investment and Construction Group Co.Ltd.; 关键词：狭窄空间 ; 地下桩基础 ; 沉井拔桩 英文关键词：narrow space;;underground pile foundation;;drawing out pile from open caisson 中文刊名：GCJS 英文刊名：Construction & Design for Engineering 机构：广州铁路投资建设集团有限公司; 出版日期：2019-06-30 出版单位：工程建设与设计 年：2019 期：No.410 语种：中文; 页：GCJS201912089 页数：2 CN：12 ISSN：11-3914/TU 分类号：212-213

摘要

以广州地铁某区间盾构隧道线路在穿越河涌一段为例,为实现在狭窄空间及河道范围内进行原有地下桩基础清除,开展沉井拔桩施工技术的研究。经过实践证明,采用沉井拔桩施工技术,恢复桩基础拔除后上方构筑物的支承作用,能减少建筑物的迁改、保护等工程费用,为其他类似工程提供借鉴与参考。
        Taking the shield tunnel undercrossing the river in a certain section of Guangzhou subway as an example, in order to clear the original underground pile foundation in the narrow space and within the scope of the river, the research on the construction technology of drawing these piles from the caisson is carried out. It has been proved by practice that the adoption of the construction technology of caisson pile drawing and the restoration of the supporting function of the upper structure after the removal of pile foundation can reduce the engineering cost of building relocation and protection and provide reference for other similar projects.

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