Opening and closing bridge with CFRP (carbon fiber reinforced plastic) plate and support

A technology of opening and closing bridges and strips, applied in opening bridges, bridges, bridge materials, etc., can solve the problems of excessive self-weight of the box girder in the durable opening and closing section and high stress requirements of the cables

Pending Publication Date: 2022-07-08
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the durability problem caused by the corrosion of the steel cables of the current opening and closing bridges and the high stress demand of the cables caused by the excessive weight of the box girder of the opening and closing section, the invention provides a new type of material as the cable opening and closing cable-stayed bridge

Method used

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  • Opening and closing bridge with CFRP (carbon fiber reinforced plastic) plate and support
  • Opening and closing bridge with CFRP (carbon fiber reinforced plastic) plate and support
  • Opening and closing bridge with CFRP (carbon fiber reinforced plastic) plate and support

Examples

Experimental program
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Embodiment Construction

[0017] like figure 1 As shown, an opening and closing bridge supported by CFRP plates includes CFRP plates 1 , V-shaped bridge towers and piers 2 , and GFRP box girder 3 . The bridge replaces the traditional steel stay cables with CFRP strips, which pass through the saddle of the bridge tower but are not anchored to the tower, but are anchored to the GFRP box girder through corrugated tooth clips, and are set on the top of the bridge pier The bearing is connected with the GFRP box girder, and the bridge deck is opened and closed by tightening and relaxing the CFRP strip.

[0018] Specific operation: After the cantilever pouring of the main girder is completed, pass the CFRP strip through the saddle of the bridge tower but not anchor it on the bridge tower, and anchor the CFRP strip at both ends of the GFRP box girder through the corrugated tooth clip anchor, which is equivalent to giving The GFRP box girder is externally prestressed.

[0019] An opening and closing bridge su...

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Abstract

The invention discloses a CFRP plate strip supported opening and closing bridge which comprises a CFRP plate strip, a V-shaped bridge tower, a bridge pier and a GFRP box girder, and the CFRP plate strip directly penetrates through the V-shaped bridge tower to be anchored on the GFRP box girder. Bearings are arranged at the connecting positions of the V-shaped bridge piers and the GFRP box girders, so that the GFRP box girders can rotate in the mode of tensioning and releasing the CFRP plate strips, and opening and closing of the bridge deck are achieved. The GFRP box girder is used as the main girder, and the characteristics of light weight and high strength of GFRP are mainly considered, so that the self-weight influence from a bridge floor during retraction and release of the CFRP plate strip can be reduced, and the bearing capacity requirement of the bridge under the normal use condition can be met.

Description

technical field [0001] The invention relates to the technical field of transportation infrastructure construction, in particular to an opening and closing cable-stayed bridge made of a novel cable material. Background technique [0002] The opening and closing cable-stayed bridge is a novel bridge type. The bridge function is reasonable, the shape is novel, light and simple, economical and beautiful, and it is in harmony with the surrounding landscape. Traffic function, as well as meeting the functional requirements of large ships passing through the canal after opening. [0003] The traditional steel cable faces serious corrosion problems in the natural environment, which greatly affects the durability of the cable-stayed bridge; in addition, the material of the steel cable has a large self-weight, which will occupy most of the allowable stress. The bearing efficiency is reduced, and the cost and construction difficulty of the structure will further increase with the incre...

Claims

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Application Information

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IPC IPC(8): E01D15/06E01D19/16E01D101/26
CPCE01D15/06E01D19/16E01D2101/264Y02A30/30
Inventor 刘越刘开全武辰昊
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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