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Framed large-span combined pre-stress highway bridge and preparation process thereof

A highway bridge and prestressing technology, applied in the direction of erecting/assembling bridges, bridges, bridge materials, etc., can solve problems such as increasing project cost, and achieve the effect of increasing bearing capacity and reducing bearing capacity

Active Publication Date: 2012-09-12
中海外交通建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the project cost has been increased to varying degrees.

Method used

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  • Framed large-span combined pre-stress highway bridge and preparation process thereof
  • Framed large-span combined pre-stress highway bridge and preparation process thereof
  • Framed large-span combined pre-stress highway bridge and preparation process thereof

Examples

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Embodiment Construction

[0038] The present invention will be discussed in detail below in conjunction with accompanying drawing: figure 1 As shown, the present invention includes a frame bridge body 1, a composite bottom beam 2 and a figure-eight connection beam 3 arranged at the bottom of the frame bridge body 1; A steel strand 7 that is prestressed by tension is provided, and the steel strand 7 is anchored on the upper end surface of the frame bridge body 1 with a tension end anchor 8 .

[0039] The composite bottom beam 2 is provided with a composite bobbin 5, and a steel strand 7 which is tensioned to generate prestress is arranged in the composite bobbin 5, and the steel strand 7 is fixed with a tension end anchorage 8. The lower part of the end face of the frame bridge body 1 is anchored.

[0040]A connecting bobbin 6 is arranged in the said eight-shaped connecting beam 3, a steel strand 7 is arranged in the connecting copper pipe 6, and a fixed end anchorage 10 is arranged at the lower part o...

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Abstract

The invention discloses a framed large-span combined prestress highway bridge and a preparation method thereof. The highway bridge comprises a framed bridge body, a composite bottom beam arranged on the lower part of the framed bridge body and a splay connecting bridge, wherein vertical tubes are arranged in the framed bridge body; a steel strand which produces prestress by virtue of tensioning is arranged in the vertical tube, and composite tube is arranged in the composite bottom beam; a connecting tube is arranged in the splay connecting beam; and steel strands which produce prestress by virtue of tensioning are arranged in the composite tube and the connecting tube. The process comprises the following steps: manufacturing bridge foundation; manufacturing the composite bottom beam; manufacturing the splay connecting beam; manufacturing the framed bridge body; manufacturing a transverse grid beam; and detaching moulds, assembling anchors, tensioning and anchoring and the like. According to the highway bridge and the preparation method thereof, the reinforced concrete bridge structure is optimized according to the working condition, the advantages of the framed structure is sufficiently represented by adopting a novel framed combined prestress process, so that the bearing capacity of the reinforced concrete bridge body is increased, and the target requirement of saving sources and materials can be fulfilled.

Description

technical field [0001] The invention relates to a frame type long-span composite prestressed highway bridge and a preparation process thereof. Background technique [0002] The continuous construction of expressways has been in our country for more than ten years. The prestressing industry driven by this has become mature, and there are a variety of general-purpose products and a number of practical processes and technologies. In the process of implementing the large transportation network, the bridge structure has also undergone great changes, and has transitioned from the traditional construction method to the advanced level of modern structure. Due to the influence of traditional consciousness, local highways also adopt the structural methods of plate girder, T girder and box girder. Therefore, the project cost has been increased to varying degrees. While promoting high standards and high construction costs, it has actually affected the development of the transportatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/00E01D21/00E01D101/28
Inventor 张文武张文臣吕荣军陈鸿金刘永书陈黎王双团周向军徐文明王水成马连宏
Owner 中海外交通建设有限公司
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