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Steel-FRP composite corrugated plate tunnel secondary lining structure and construction method thereof

A secondary lining and corrugated plate technology, applied in the direction of tunnel lining, shaft lining, tunnel, etc., can solve the problems of brittle failure, poor corrosion resistance of steel, and high price, so as to reduce project cost, improve construction environment, and reduce excavation. area effect

Active Publication Date: 2018-03-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion resistance of steel is poor, and it cannot meet the corrosion requirements of tunnel engineering in areas with developed groundwater.
Fiber-reinforced plastic (FRP) has good 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 composite corrugated plate tunnel secondary lining structure and construction method thereof
  • Steel-FRP composite corrugated plate tunnel secondary lining structure and construction method thereof
  • Steel-FRP composite corrugated plate tunnel secondary lining structure and construction method thereof

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Embodiment Construction

[0020] The technical solutions of the present invention will be described below with reference to the accompanying drawings and embodiments.

[0021] like figure 1 A steel-FRP composite corrugated plate tunnel secondary lining structure and a construction method thereof shown in the present invention, the method includes: prefabricating corrugated plates, excavating tunnels, applying initial support, applying waterproofing and drainage systems, and inverted arch corrugations. Slab installation, side wall corrugated board installation, top corrugated board installation, concrete grouting and inverted arch fill.

[0022] Specifically, the corrugated board 1 is prefabricated according to the design requirements, and the thickness of the corrugated board 1 is determined. The corrugated board is a composite material corrugated board compounded by a thermosetting molding process. . The steel core thickness is about 60-70% of the plate thickness, and the FRP thickness is about 30-4...

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Abstract

The invention discloses a steel-FRP composite corrugated plate tunnel secondary lining structure and a construction method thereof and belongs to the technical field of tunnel engineering. The secondary lining structure is formed by prefabricating and splicing steel-FRP composite corrugated plates, the middles of the corrugated plates are inlaid steel cores, and the inlaid steel cores are wrappedwith FRP. The FRP and the inlaid steel cores are composited and formed though a heat curing forming technique, the thickness of the inlaid steel cores is 60-70% of that of the corrugated plates, and the thickness of the FRP is 30-40% of that of the corrugated plates. The thickness of the corrugated plates is calculated and determined according to stress. The direction of corrugated lines is perpendicular to the longitudinal direction of a tunnel. The curve radian of the corrugated plates accords with the designed outline of the tunnel. Bolt holes and grouting holes are reserved in corrugated plate bodies. Flanges for connection are arranged on the two sides of the corrugated plates in the longitudinal direction. Water-stop belts are arranged at the connecting positions of the corrugated plates, so that underground water seepage is prevented. Supports adopt prefabricated component splicing type construction, and the construction period is shortened. The construction environment is improved, the tunnel outline is optimized, the excavation area is reduced under the premise that the building boundary is ensured, and the engineering manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and particularly relates to a secondary lining structure of a steel-FRP composite corrugated plate tunnel for tunnel engineering and an application method thereof. The invention has the characteristics of high strength, fast construction, good corrosion resistance and high cost performance. Background technique [0002] At present, the secondary lining support of the tunnel is mostly supported by reinforced concrete. Reinforced concrete support has good durability and mature construction technology, but the production efficiency of steel mesh is low. The tunnel support structure of the steel corrugated plate is an assembled support structure, which can quickly seal the excavation surface and reduce the construction period. [0003] In the traditional design process, due to the conservative design of the nature of the concrete material, the thickness of the lining is large, which incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/20E21D11/18E21D11/10E21D11/38
CPCE21D11/105E21D11/183E21D11/20E21D11/383
Inventor 马国伟李鹏飞杨云轩李之建王德华
Owner BEIJING UNIV OF TECH
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