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Deformation control method for implementing foundation pit engineering through reverse construction method
The invention belongs to the field of underground space development, and relates to a deformation control method for implementing foundation pit engineering by a reverse construction method, which comprises the following steps of: firstly, constructing a foundation pit support structure, temporary support side columns and middle support piles, and sequentially excavating a foundation pit to be below each layer of reverse construction beam plate to construct the reverse construction beam plate and an outer wall hidden beam; supporting plate structures are arranged on the periphery of the top-down beam plate and used for placing servo jacks in the later period; an inner structure edge beam is arranged on the periphery of the top-down structure beam plate and is connected with the temporary supporting edge column; a servo jack is installed between a reversed structure beam plate and an outer wall hidden beam, and jacking force is applied, so that deformation of an enclosure structure is reduced. The deformation of the foundation pit is controlled, the influence of excavation construction of the foundation pit on surrounding buildings and structures and an underground pipe network is reduced, and the method plays an important role in urban renewal construction projects.
本发明属于地下空间开发领域的一种用于逆作法实施基坑工程的变形控制方法，首先施工基坑围护结构、临时支承边柱和中间支承桩柱，基坑依次开挖至各层逆作结构梁板以下施工逆作结构梁板和外墙暗梁；逆作梁板梁板周边设置托板结构用于后期放置伺服千斤顶；逆作结构梁板周边设置内结构边梁与临时支承边柱连接；在逆作结构梁板和外墙暗梁之间安装伺服千斤顶并施加顶推力，从而减小围护结构变形。其实现了控制基坑变形，减小基坑开挖施工对周边建构筑物及地下管网的影响，在城市更新建设工程中具有重要作用。
Deformation control method for implementing foundation pit engineering through reverse construction method
The invention belongs to the field of underground space development, and relates to a deformation control method for implementing foundation pit engineering by a reverse construction method, which comprises the following steps of: firstly, constructing a foundation pit support structure, temporary support side columns and middle support piles, and sequentially excavating a foundation pit to be below each layer of reverse construction beam plate to construct the reverse construction beam plate and an outer wall hidden beam; supporting plate structures are arranged on the periphery of the top-down beam plate and used for placing servo jacks in the later period; an inner structure edge beam is arranged on the periphery of the top-down structure beam plate and is connected with the temporary supporting edge column; a servo jack is installed between a reversed structure beam plate and an outer wall hidden beam, and jacking force is applied, so that deformation of an enclosure structure is reduced. The deformation of the foundation pit is controlled, the influence of excavation construction of the foundation pit on surrounding buildings and structures and an underground pipe network is reduced, and the method plays an important role in urban renewal construction projects.
本发明属于地下空间开发领域的一种用于逆作法实施基坑工程的变形控制方法，首先施工基坑围护结构、临时支承边柱和中间支承桩柱，基坑依次开挖至各层逆作结构梁板以下施工逆作结构梁板和外墙暗梁；逆作梁板梁板周边设置托板结构用于后期放置伺服千斤顶；逆作结构梁板周边设置内结构边梁与临时支承边柱连接；在逆作结构梁板和外墙暗梁之间安装伺服千斤顶并施加顶推力，从而减小围护结构变形。其实现了控制基坑变形，减小基坑开挖施工对周边建构筑物及地下管网的影响，在城市更新建设工程中具有重要作用。
Deformation control method for implementing foundation pit engineering through reverse construction method
一种用于逆作法实施基坑工程的变形控制方法
WENG QIPING (author) / LI JING (author) / WANG WEIDONG (author) / LIU RUOBIAO (author)
2024-12-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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