Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of underground structure crossing existing tunnel
The invention relates to the technical field of underground engineering construction, in particular to a construction method of an underground structure crossing an existing tunnel, which is characterized in that a protective structure is constructed in a to-be-formed area of a foundation pit, so that the to-be-formed area is divided into a protective area and non-protective areas arranged on two sides of the non-protective area; secondly, a plurality of mutually-spaced isolation structures are arranged in the protection area so as to divide the protection area into a plurality of areas to be excavated, then excavation construction is conducted on all the areas to be excavated in a bin-separated skip excavation mode, and finally the protection area structure is obtained. The protection effect on the existing tunnel can be guaranteed when excavation construction is conducted on the crossing area of the existing tunnel, synchronous and symmetrical excavation construction is conducted on the two non-protection areas in a clockwise and anticlockwise combined mode, and it can be guaranteed that when loads on the left side and the right side of the extending direction of the existing tunnel are removed, the protection effect on the existing tunnel can be guaranteed; the existing tunnel cannot be damaged due to left-right displacement, and normal operation of the existing tunnel cannot be affected.
本发明涉及地下工程施工技术领域，特别涉及一种跨既有隧道的地下结构施工方法，本发明通过在基坑待成形区域施作防护结构，以将待成形区域分隔为保护区域以及设置于非保护区域两侧的非保护区域，然后先在保护区域内设置多道相互间隔的隔离结构以将保护区域划分为多个待开挖区域，然后采用分仓跳挖方式对所有待开挖区域进行开挖施工，最终得到保护区结构，使得本发明在对既有隧道的穿越区域进行开挖施工时能够保证对既有隧道的防护效果，采用顺逆结合的方式对两个非保护区进行同步对称开挖施工，能够保证在既有隧道的延伸方向的左右两侧的荷载被去除时，既有隧道不会因发生左右位移而造成损坏，也不会影响既有隧道的正常运营。
Construction method of underground structure crossing existing tunnel
The invention relates to the technical field of underground engineering construction, in particular to a construction method of an underground structure crossing an existing tunnel, which is characterized in that a protective structure is constructed in a to-be-formed area of a foundation pit, so that the to-be-formed area is divided into a protective area and non-protective areas arranged on two sides of the non-protective area; secondly, a plurality of mutually-spaced isolation structures are arranged in the protection area so as to divide the protection area into a plurality of areas to be excavated, then excavation construction is conducted on all the areas to be excavated in a bin-separated skip excavation mode, and finally the protection area structure is obtained. The protection effect on the existing tunnel can be guaranteed when excavation construction is conducted on the crossing area of the existing tunnel, synchronous and symmetrical excavation construction is conducted on the two non-protection areas in a clockwise and anticlockwise combined mode, and it can be guaranteed that when loads on the left side and the right side of the extending direction of the existing tunnel are removed, the protection effect on the existing tunnel can be guaranteed; the existing tunnel cannot be damaged due to left-right displacement, and normal operation of the existing tunnel cannot be affected.
本发明涉及地下工程施工技术领域，特别涉及一种跨既有隧道的地下结构施工方法，本发明通过在基坑待成形区域施作防护结构，以将待成形区域分隔为保护区域以及设置于非保护区域两侧的非保护区域，然后先在保护区域内设置多道相互间隔的隔离结构以将保护区域划分为多个待开挖区域，然后采用分仓跳挖方式对所有待开挖区域进行开挖施工，最终得到保护区结构，使得本发明在对既有隧道的穿越区域进行开挖施工时能够保证对既有隧道的防护效果，采用顺逆结合的方式对两个非保护区进行同步对称开挖施工，能够保证在既有隧道的延伸方向的左右两侧的荷载被去除时，既有隧道不会因发生左右位移而造成损坏，也不会影响既有隧道的正常运营。
Construction method of underground structure crossing existing tunnel
跨既有隧道的地下结构施工方法
MA GUOLIANG (Autor:in) / AN HUILI (Autor:in) / FENG JIAQIANG (Autor:in) / XIANG RONG (Autor:in) / LI YULIN (Autor:in) / WANG JINGCHAO (Autor:in) / ZHENG LAN (Autor:in)
03.02.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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