Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Expanding excavation structure for shield tunnel foundation and construction method thereof
The invention discloses an expanding excavation structure for a shield tunnel foundation and a construction method thereof. The expanding excavation structure comprises an arch frame at a tunnel expanding excavation contour line, a supporting structure connected into a duct piece in the arch frame and a supporting piece connected between the arch frame and the supporting structure. The supportingstructure comprises a frame shaped like a square mesh located at the center of the cross section of the tunnel excavation contour, an extension rod connected to the peripheral intersection point of the frame shaped like the square mesh, a reinforcing piece and an additional piece. According to the expanding excavation structure, expanding excavation construction is conducted on the basis of shieldconstruction, the labor hour is saved, installation of the supporting structure in the early stage is facilitated, and the construction quality during expanding excavation is guaranteed; by arrangingthe supporting structure, a supporting foundation is provided during expanding excavation, and the frame shaped like the square mesh on the supporting structure can enable the whole component to be stressed evenly and adapt to design sections of different forms; by arranging the supporting piece, synchronous supporting is conducted while partition expanding excavation is conducted; and by means of partition excavation and the excavation mode from top to bottom, the orderliness of expanding excavation is guaranteed, and the expanding excavation quality is guaranteed.
本发明公开了一种用于盾构隧道基础上的扩挖结构及其施工方法，扩挖结构包含隧道扩挖轮廓线处的拱架、连接于拱架内部管片中的支撑结构、连接于拱架与支撑结构间的支撑件；支撑结构包含位于隧道开挖轮廓横断面中心处的田字架、连接于田字架外周交点处的伸长杆、加强件和附加件。本发明通过在盾构施工的基础上进行扩挖施工，利于节省工时且便于前期支撑结构的安装，保证扩挖时的施工质量；通过支撑结构的设置，利于扩挖时提供支撑基础，且支撑结构上田字架可使得构件整体均匀受力和适应不同形式的设计断面；通过支撑件的设置，利于在分区扩挖的同时进行同步支撑；通过分区开挖和自上而下的开挖方式，保证了扩挖的有序性，利于保证扩挖质量。
Expanding excavation structure for shield tunnel foundation and construction method thereof
The invention discloses an expanding excavation structure for a shield tunnel foundation and a construction method thereof. The expanding excavation structure comprises an arch frame at a tunnel expanding excavation contour line, a supporting structure connected into a duct piece in the arch frame and a supporting piece connected between the arch frame and the supporting structure. The supportingstructure comprises a frame shaped like a square mesh located at the center of the cross section of the tunnel excavation contour, an extension rod connected to the peripheral intersection point of the frame shaped like the square mesh, a reinforcing piece and an additional piece. According to the expanding excavation structure, expanding excavation construction is conducted on the basis of shieldconstruction, the labor hour is saved, installation of the supporting structure in the early stage is facilitated, and the construction quality during expanding excavation is guaranteed; by arrangingthe supporting structure, a supporting foundation is provided during expanding excavation, and the frame shaped like the square mesh on the supporting structure can enable the whole component to be stressed evenly and adapt to design sections of different forms; by arranging the supporting piece, synchronous supporting is conducted while partition expanding excavation is conducted; and by means of partition excavation and the excavation mode from top to bottom, the orderliness of expanding excavation is guaranteed, and the expanding excavation quality is guaranteed.
本发明公开了一种用于盾构隧道基础上的扩挖结构及其施工方法，扩挖结构包含隧道扩挖轮廓线处的拱架、连接于拱架内部管片中的支撑结构、连接于拱架与支撑结构间的支撑件；支撑结构包含位于隧道开挖轮廓横断面中心处的田字架、连接于田字架外周交点处的伸长杆、加强件和附加件。本发明通过在盾构施工的基础上进行扩挖施工，利于节省工时且便于前期支撑结构的安装，保证扩挖时的施工质量；通过支撑结构的设置，利于扩挖时提供支撑基础，且支撑结构上田字架可使得构件整体均匀受力和适应不同形式的设计断面；通过支撑件的设置，利于在分区扩挖的同时进行同步支撑；通过分区开挖和自上而下的开挖方式，保证了扩挖的有序性，利于保证扩挖质量。
Expanding excavation structure for shield tunnel foundation and construction method thereof
一种用于盾构隧道基础上的扩挖结构及其施工方法
AN JIANYONG (Autor:in) / JIN XIN (Autor:in) / LEI HAIBO (Autor:in) / GUAN XIAOMING (Autor:in) / LI YANKE (Autor:in) / YIN HONGWEI (Autor:in) / ZHAO WENKE (Autor:in) / YANG XIAODONG (Autor:in) / LIU XU (Autor:in) / WANG GANG (Autor:in)
14.07.2020
Patent
Elektronische Ressource
Chinesisch
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