Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for excavation construction of foundation pit above existing tunnel
The invention provides a method for excavation construction of a foundation pit above an existing tunnel. Excavation of the foundation pit in a protection zone above the existing tunnel is constructedby section stripping and excavation to avoid the subway tunnel floating due to excavation unloading. Floating of an existing tunnel structure is prevented through the methods of hardening of an excavation earthwork at the top of the foundation pit, mounting of a ballast structure at the bottom of the excavated foundation pit for pile-loading and the like. The problems of how to ensure the safetyand stability of the existing tunnel, and how of ensure the fast promotion of excavation construction of the earthwork on the upper part of the subway are solved.
本发明提供了一种既有隧道上方的基坑开挖施工方法，在既有隧道上方的保护区范围的基坑开挖通过分段抽条开挖施工，避免开挖卸载引起地铁隧道上浮，通过硬化基坑顶部的开挖土方、于开挖的基坑的底部设置压载结构进行堆载等方式预防和防止既有隧道结构的上浮。本发明解决了如何既可保障既有隧道的安全稳定，又能保证地铁上部的土方开挖施工快速推进的问题。
Method for excavation construction of foundation pit above existing tunnel
The invention provides a method for excavation construction of a foundation pit above an existing tunnel. Excavation of the foundation pit in a protection zone above the existing tunnel is constructedby section stripping and excavation to avoid the subway tunnel floating due to excavation unloading. Floating of an existing tunnel structure is prevented through the methods of hardening of an excavation earthwork at the top of the foundation pit, mounting of a ballast structure at the bottom of the excavated foundation pit for pile-loading and the like. The problems of how to ensure the safetyand stability of the existing tunnel, and how of ensure the fast promotion of excavation construction of the earthwork on the upper part of the subway are solved.
本发明提供了一种既有隧道上方的基坑开挖施工方法，在既有隧道上方的保护区范围的基坑开挖通过分段抽条开挖施工，避免开挖卸载引起地铁隧道上浮，通过硬化基坑顶部的开挖土方、于开挖的基坑的底部设置压载结构进行堆载等方式预防和防止既有隧道结构的上浮。本发明解决了如何既可保障既有隧道的安全稳定，又能保证地铁上部的土方开挖施工快速推进的问题。
Method for excavation construction of foundation pit above existing tunnel
既有隧道上方的基坑开挖施工方法
LU JIANWEN (Autor:in) / OU JIANFENG (Autor:in) / CAI QINGJUN (Autor:in) / WANG CHAOLONG (Autor:in) / YUAN GUANGHUI (Autor:in) / LI TIANLONG (Autor:in) / LI ZONGYANG (Autor:in) / KUANG CHUZHAO (Autor:in)
02.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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