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Anti-buckling assembled tunnel combined structure supporting system and construction method thereof

A combined structure and anti-buckling technology, applied in tunnels, tunnel linings, shaft equipment, etc., can solve problems such as buckling failure of arch structures, and achieve the effects of enhancing bearing capacity, improving operating environment, and reducing local buckling

Pending Publication Date: 2020-06-02
CHANGAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-buckling assembled tunnel composite structure support system and its construction method, which solves the problem of buckling failure of the arch structure, and at the same time adopts prefabricated assembled lining to improve the tunnel construction efficiency and construction accuracy

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  • Anti-buckling assembled tunnel combined structure supporting system and construction method thereof
  • Anti-buckling assembled tunnel combined structure supporting system and construction method thereof
  • Anti-buckling assembled tunnel combined structure supporting system and construction method thereof

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Embodiment Construction

[0058] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0059] Such as figure 1 As shown, a buckling-resistant assembled tunnel composite structure support system of the present invention includes three parts: a buckling-resistant composite arch frame 1, an inner concrete 2-1 and a prefabricated concrete lining 2-2. Anti-buckling combined arch 1 includes wing plate 3, core tube 4, reinforcement angle plate 5 and fixing bolts 8; ; The core pipe 4 is poured with in-pipe concrete 2-1, and a prefabricated concrete lining 2-2 is installed between the adjacent anti-buckling composite arches 1.

[0060] The anti-buckling combined arch 1 is used as the bearing part of the arch. The anti-buckling composite arch frame is used to immediately close the excavation space to form the first-floor support structure of the support system, which bears the surround...

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Abstract

The invention discloses an anti-buckling assembled tunnel combined structure supporting system and a construction method thereof. The supporting system comprises anti-buckling combined ached trusses,in-pipe concrete and a precast concrete lining; reinforced angle plates and fixed bolts are additionally arranged on the anti-buckling combined arched trusses; the precast concrete lining comprises avault lining, a spandrel lining, an arch springing lining and an arch bottom lining; the four linings are provided with angle plate installation joints; bolt holes are reserved in the ends of the fourlinings, and the outer edge surfaces of the four linings are provided with protrusions between the arch trusses; the positions of the bolt holes are adapted to those of the fixed bolts; the positionsof the angle plate installation joints are adapted to those of the reinforced angle plates; and the protrusions between the arch trusses are used for filling the gap between the two adjacent anti-buckling combined arched trusses. The precast concrete lining is adopted, and the precast concrete lining can be installed after the two adjacent anti-buckling combined arched trusses are installed; andthrough the factory prefabrication, the manufacturing accuracy and the installation speed of the precast concrete lining can be guaranteed and improved, and moreover, the working environment in a tunnel is improved.

Description

technical field [0001] The invention belongs to the technical field of tunnel support structures, and in particular relates to a buckling-resistant assembled tunnel composite structure support system and a construction method thereof. Background technique [0002] At present, during the construction process of many loess tunnels, the arch frame is twisted and damaged, and the shotcrete is cracked, which leads to the deformation and invasion of the chamber, and even engineering disasters such as landslides. The commonly used primary support structures for loess tunnels at this stage are steel arch frames and shotcrete. However, structural instability problems often occur, ranging from local buckling to overall buckling, forming a "twisted shape". Especially for tunnels with longitudinal bias conditions, out-of-plane instability of the arch frame often occurs, resulting in buckling failure of the structure, which is caused by the large difference in bending stiffness between t...

Claims

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Application Information

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IPC IPC(8): E21D11/18E21D11/08
CPCE21D11/18E21D11/08
Inventor 王志超谢永利张梦泽闫钰丰苏旭林
Owner CHANGAN UNIV
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