Steel-FRP (fiber reinforced plastic) composite corrugated plate tunnel supporting method

A technology of corrugated plates and tunnels, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of inability to meet the corrosion requirements of tunnel engineering, poor corrosion resistance of steel, and low elastic modulus, etc. The effect of digging area, reducing steel corrosion, and reducing difficulty

Inactive Publication Date: 2018-03-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steel has poor corrosion resistance and cannot meet the corrosion requirements of tunnel engineering
Fiber-reinforced plastic (FRP) has good durability and corrosion resistance, but has the problems of low elastic modulus, large deformation, high price and brittle failure

Method used

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  • Steel-FRP (fiber reinforced plastic) composite corrugated plate tunnel supporting method
  • Steel-FRP (fiber reinforced plastic) composite corrugated plate tunnel supporting method
  • Steel-FRP (fiber reinforced plastic) composite corrugated plate tunnel supporting method

Examples

Experimental program
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Embodiment Construction

[0025] The process flow of the composite material tunnel support method includes: prefabricated corrugated boards, reinforced surrounding rock with advanced small conduits, excavation on upper steps, installation of corrugated boards on the top, excavation on lower steps, installation of corrugated boards on side walls, excavation of inverted arches, inverted arches Corrugated plate fixing, waterproof and drainage system setting and secondary lining construction.

[0026] Such as figure 1 The shown tunnel support structure includes corrugated plate support 1 , anchor rod 2 , concrete layer 11 and secondary lining 5 . Corrugated plate support 1 is composed of top corrugated plates, side wall corrugated plates, inverted arch corrugated plates and concrete. The corrugated plates are connected into a ring as the main force-bearing member of the structure, and the corrugated plates are overlapped 3 and fixed by two rows of bolts at the overlapping positions. Each corrugated plate...

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Abstract

The invention discloses a steel-FRP (fiber reinforced plastic) composite corrugated plate tunnel supporting method and belongs to the technical field of research and development of composites and novel structures in the tunnel engineering field. The method comprises procedures as follows: prefabrication of a corrugated plate, reinforcement of surrounding rock by driving advanced small pipes, excavation of upper steps, mounting of a top corrugated plate, excavation of lower steps, mounting of side wall corrugated plates, excavation of an inverted arch, fixation of a corrugated plate at the inverted arch, setting of a waterproofing and drainage system and secondary lining construction. After the steps are implemented, construction of preliminary tunnel supporting, the waterproofing and drainage system and a secondary lining structure is completed, and the whole tunnel supporting structure can be completed through repeated implementation of the steps with advancing of the tunnel during specific construction. According to the method, performance of an FRP material and a steel material are sufficiently played, advantages of the corrugated plate are combined, and the method has the advantages that the corrosion resistance is good, the bearing capability is high, the hoop rigidity is high, the construction speed is high, the operation environment is excellent, the excavation range issmall and the like.

Description

technical field [0001] The invention belongs to the technical field of research and development of composite materials and new structures in the field of tunnel engineering, and in particular relates to a method for replacing traditional support with steel-FRP composite material corrugated plates for tunnel engineering. The invention has fast assembly speed, excellent working environment, high strength, high cost performance and excellent corrosion resistance. Background technique [0002] The current tunnel support form is mostly steel arch frame or grid arch frame plus shotcrete support form. When this support form is adopted, the production efficiency of the arch frame is low, and the concrete needs to be cured for a period of time before it can fully play its role, which prolongs the construction period. The tunnel support structure of the corrugated plate is an assembled support structure, which can quickly realize the closure of the excavation surface and reduce the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10E21D20/00E21D11/38E21D9/00E21F16/02
CPCE21D11/006E21D9/001E21D11/00E21D11/10E21D11/105E21D11/38E21D11/386E21D20/00E21F16/02
Inventor 马国伟杨云轩李鹏飞李之建王德华
Owner BEIJING UNIV OF TECH
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