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A platform for research: civil engineering, architecture and urbanism
Special-shaped cover arch structure for oblique crossing tunnel portal and construction method of special-shaped cover arch structure
The invention discloses a special-shaped cover arch structure for an oblique crossing tunnel portal and a construction method thereof.The special-shaped cover arch structure comprises a cover arch and a special-shaped cover arch reinforcing section, the special-shaped cover arch reinforcing section is fixedly arranged at the oblique crossing slope face of the tunnel portal and is triangular in an overlook view, and the cover arch is fixedly connected with the special-shaped cover arch reinforcing section; the special-shaped cover arch reinforcing section is communicated with a guide pipe of the cover arch, the distance between steel arch frames of the special-shaped cover arch reinforcing section is smaller than that between the steel arch frames of the cover arch, a notch groove structure is formed in the steel arch frame mounting and supporting position of the special-shaped cover arch reinforcing section and the oblique crossing slope face of the tunnel portal, and steel plates are welded to the two ends of the steel arch frames of the special-shaped cover arch reinforcing section. And the steel plate is fixedly mounted in the notch groove structure at the oblique crossing slope surface of the tunnel portal through an expansion bolt. By the adoption of the structure of the cover arch and the special-shaped cover arch reinforcing section, excavation of the tunnel portal can be effectively reduced, the construction difficulty is lowered, the construction progress is accelerated, the construction cost is reduced, and conditions are provided for follow-up optimization of the tunnel portal.
本申请公开了一种用于斜交隧道洞口的异形套拱结构及其施工方法，异形套拱结构包括套拱和异形套拱加强段，异形套拱加强段固定设置在隧道口斜交坡面处，所述异形套拱加强段俯视呈三角形，套拱固定连接异形套拱加强段，异形套拱加强段与套拱的导向管相互连通，异形套拱加强段的钢拱架间距小于所述套拱的钢拱架间距，异形套拱加强段与隧道口斜交坡面的钢拱架安装支撑处开设有刻槽结构，异形套拱加强段的钢拱架两端焊接有钢板，所述钢板通过膨胀螺栓固定安装在隧道口斜交坡面处的所述刻槽结构内。本申请采用套拱加异形套拱加强段的结构，可有效地减少洞口挖方，降低施工难度，加快了施工进度，减少了工程造价，为后续隧道洞门优化提供条件。
Special-shaped cover arch structure for oblique crossing tunnel portal and construction method of special-shaped cover arch structure
The invention discloses a special-shaped cover arch structure for an oblique crossing tunnel portal and a construction method thereof.The special-shaped cover arch structure comprises a cover arch and a special-shaped cover arch reinforcing section, the special-shaped cover arch reinforcing section is fixedly arranged at the oblique crossing slope face of the tunnel portal and is triangular in an overlook view, and the cover arch is fixedly connected with the special-shaped cover arch reinforcing section; the special-shaped cover arch reinforcing section is communicated with a guide pipe of the cover arch, the distance between steel arch frames of the special-shaped cover arch reinforcing section is smaller than that between the steel arch frames of the cover arch, a notch groove structure is formed in the steel arch frame mounting and supporting position of the special-shaped cover arch reinforcing section and the oblique crossing slope face of the tunnel portal, and steel plates are welded to the two ends of the steel arch frames of the special-shaped cover arch reinforcing section. And the steel plate is fixedly mounted in the notch groove structure at the oblique crossing slope surface of the tunnel portal through an expansion bolt. By the adoption of the structure of the cover arch and the special-shaped cover arch reinforcing section, excavation of the tunnel portal can be effectively reduced, the construction difficulty is lowered, the construction progress is accelerated, the construction cost is reduced, and conditions are provided for follow-up optimization of the tunnel portal.
本申请公开了一种用于斜交隧道洞口的异形套拱结构及其施工方法，异形套拱结构包括套拱和异形套拱加强段，异形套拱加强段固定设置在隧道口斜交坡面处，所述异形套拱加强段俯视呈三角形，套拱固定连接异形套拱加强段，异形套拱加强段与套拱的导向管相互连通，异形套拱加强段的钢拱架间距小于所述套拱的钢拱架间距，异形套拱加强段与隧道口斜交坡面的钢拱架安装支撑处开设有刻槽结构，异形套拱加强段的钢拱架两端焊接有钢板，所述钢板通过膨胀螺栓固定安装在隧道口斜交坡面处的所述刻槽结构内。本申请采用套拱加异形套拱加强段的结构，可有效地减少洞口挖方，降低施工难度，加快了施工进度，减少了工程造价，为后续隧道洞门优化提供条件。
Special-shaped cover arch structure for oblique crossing tunnel portal and construction method of special-shaped cover arch structure
一种用于斜交隧道洞口的异形套拱结构及其施工方法
MA JIANLEI (author) / DANG TIEHU (author) / YOSHITO (author) / LI ZHUOHAO (author)
2022-04-05
Patent
Electronic Resource
Chinese
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