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Reinforced concrete through arch bridge suspender direct replacement structure and replacement method thereof

A reinforced concrete and hanger technology, applied in arch bridges, bridges, bridge maintenance, etc., can solve the problems of bridge traffic interruption, time-consuming and laborious, and achieve the effect of ensuring reasonable stress

Pending Publication Date: 2020-11-27
兰州交通大学工程检测有限公司
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  • Abstract
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Problems solved by technology

[0004] The object of the present invention is to provide a structure for direct replacement of the suspender of a reinforced concrete under-supported arch bridge and its replacement method, so as to solve the problem that the single suspender of the reinforced concrete under-supported arch bridge needs to be replaced by temporary tensioning and dragging devices, bridge traffic, etc. Disruptive, time-consuming and labor-intensive problems

Method used

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  • Reinforced concrete through arch bridge suspender direct replacement structure and replacement method thereof
  • Reinforced concrete through arch bridge suspender direct replacement structure and replacement method thereof

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Embodiment

[0032] Such as Figure 1-2 As shown, a reinforced concrete under-supported arch bridge directly replaces the suspender structure, including a suspender, an arch rib 2, and a beam 3, and the suspender is arranged between the arch rib 2 and the beam 3. The boom is a double boom member 1, and the double boom member 1 includes a first anchor rod 11, a first cable branch plate 12, a boom 15, a second cable branch plate 18, a second Anchor rod 19; wherein, the first anchor rod 11 is arranged in the arch rib interface 21 on the arch rib 2; the second anchor rod 19 is arranged in the beam interface 31 on the beam 3; the suspender 15 and the first branch cable plate A first screw set 14 is arranged between 12, and a second screw set 16 is arranged between the suspender 15 and the second cable branch plate 18.

[0033] Specifically: the first screw set 14 is a group, connected to each other by the first adjusting screw 13, the top of the first screw set 14 on the upper part is set in t...

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Abstract

The invention discloses a reinforced concrete through arch bridge suspender direct replacement structure and a replacement method thereof, belongs to the technical field of bridge engineering, and aims to solve the problems that a single suspender of a reinforced concrete through arch bridge needs to be replaced by means of a temporary tensioning and dragging device, bridge traffic needs to be interrupted, and time and labor are wasted. The structure comprises a suspender, an arch rib and a cross beam, wherein the suspender is arranged between the arch rib and the cross beam, the suspender isa double-suspender component, the double-suspender component comprises a first anchor rod, a first cable distributing plate, a suspender unit, a second cable distributing plate and a second anchor rodwhich are sequentially arranged from top to bottom, a first screw sleeve is arranged between the suspender unit and the first cable distributing plate, and a second screw sleeve is arranged between the suspender unit and the second cable distributing plate. The method comprises primary replacement and secondary replacement. The suspenders can be replaced one by one through portable equipment, thestress reasonability of a bridge structure can be guaranteed, and great convenience is brought to cable replacement construction.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a structure for directly replacing suspension rods of a reinforced concrete under-supported arch bridge and a method for replacing them. Background technique [0002] Among the concrete-filled steel tube arch bridges, under-supported arch bridges are commonly used in bridge structures, and more than 400 have been completed and put into operation. A large number of single suspender structures are designed for this structure. Suspenders, as one of the most important force-transmitting components of mid- and under-through arch bridges, have an important impact on the operational safety of the bridge. Generally, the design reference period of large-span concrete-filled steel tube under-supported arch bridges is 100 years, and the design service life of suspenders is 20 to 25 years. Therefore, there will be replacement of suspenders during the operation of arch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D4/00
CPCE01D4/00E01D22/00
Inventor 刘世忠董长军冯志勇陶永贵俞培莉孙建军王文哲王波毛亚娜徐浩
Owner 兰州交通大学工程检测有限公司
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