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Suspended and cable-stayed combined structural bridge

A combined structure and cable-stayed technology, applied in construction and other directions, can solve problems such as inability to implement, and achieve the effect of reducing scale, obvious economic advantages, and eliminating adverse effects.

Inactive Publication Date: 2011-06-15
ZHONGTIE MAJOR BRIDGE RECONNAISSANCE & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the use of multiple pairs of suspenders and cables intersecting and the arrangement of the fully continuous beam structure, it is deeply trapped in theoretical misunderstandings and cannot extricate itself, so this scheme has not been implemented

Method used

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  • Suspended and cable-stayed combined structural bridge
  • Suspended and cable-stayed combined structural bridge

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, the present invention is further described, as shown in accompanying drawing, stay cable 6 is established between bridge tower 5 of the present invention and the prestressed reinforced concrete box girder of cable-stayed part or combined beam 1, and two ends are anchored in anchorage The main cable 4 of 7 is fixed on the top of the bridge tower 5, and there is a conventional suspender 8 between the main cable and the mid-span steel box girder 2 of the suspension part. Low-strain tie rods 3 are used at the intersection of suspension cable-stays, and movable hinge supports are used to connect the mid-span steel box girder and the cable-stayed part of the prestressed reinforced concrete box girder or combined beam.

[0016] The suspension cable-stayed composite structure bridge of the present invention has the following advantages:

[0017] 1. Low-strain tie rods are used at the intersection of suspension and cable-stayed, wh...

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Abstract

The invention relates to a suspended and cable-stayed combined structural bridge. A stay cable is arranged between a bridge tower and a pre-stressed reinforced concrete box girder or a composite girder; a main cable two ends of which are anchored at an anchor is fixed on the top of the bridge tower; a conventional suspension rod is arranged between the main cable and the suspension part of a midspan steel box girder; a low-strain tie rod is adopted at the suspended and cable-stayed intersection; and the midspan steel box girder is connected with the pre-stressed reinforced concrete box girder or the composite girder at a cable-stayed part through a movable hinged support. By utilizing the suspended and cable-stayed combined structural bridge, the in-plane geometric line shapes of a main-span suspension cable and the main cable in a section of which two ends are provided with no suspension lines can be effective controlled under the load action, so that the main cable keeps in-plane stability; the fatigue problem of the suspension rod and the stay cable close to the suspended and cable-stayed intersection is avoided; adverse effects of live load negative moment and high-low temperature variation on a structure can be eliminated by means of movable hinged support connection; and the material dosage of the main cable and an anchoring structure can be greatly lowered. The suspended and cable-stayed combined structural bridge has the advantages of scientific and reasonable structure and reliable power transmission and is durable, practical, safe and economical.

Description

technical field [0001] The patent of the present invention relates to a bridge with a suspension cable-stayed composite structure. Background technique [0002] Suspension cable-stayed composite bridge is a kind of cable-bearing bridge. Due to the combined use of the suspension and cable-stayed parts, it has many advantages: the main beams of the suspension and cable-stayed parts can be made of different materials, such as prestressed reinforced concrete beams or combined beams for the cable-stayed part, and prestressed reinforced concrete beams or composite beams for the suspension part. Steel girders, etc., can improve structural performance and reduce the amount of beams, cables, and anchor materials; the reduction in the length of the main beam in the suspension part can also reduce the force of the main cable and reduce the difficulty of anchor construction, so that the suspension cable structure can be used on soft soil foundations. It becomes possible to implement on...

Claims

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Application Information

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IPC IPC(8): E01D11/00
Inventor 杨进王忠彬
Owner ZHONGTIE MAJOR BRIDGE RECONNAISSANCE & DESIGN INST
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