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A widening method of an interchange ramp bridge

A technology for overpass ramps and overpasses, applied to roads, bridges, roads, etc., can solve problems such as the inability to meet the expansion requirements of ramp bridges, and achieve the effect of easy construction

Inactive Publication Date: 2019-05-03
CHONGQING ZHONGSHE ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for widening an overpass ramp bridge, which can solve the technical problem that conventional construction methods cannot meet the expansion requirements of the ramp bridge

Method used

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  • A widening method of an interchange ramp bridge
  • A widening method of an interchange ramp bridge
  • A widening method of an interchange ramp bridge

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0039] In this embodiment, the ramp is widened on the basis of the existing ramp bridge. The existing ramp bridge is supported on the piers, and there are multiple piers. The piers distributed at both ends are called abutments 8, and the piers distributed in the middle are called abutments 8. For column piers.

[0040] In addition: in this embodiment, the end beam refers to the position located at the end of the bridge and the cross section is solid, the platform cap is located under the upper end beam of the abutment, and is used to install the support 1, and the superstructure 4 refers to the support on the bridge pier. The part consists of a box girder and a bridge deck. Split pier 7 refers to a column pier at the junction of two adjacent sections; a single column pier refers to a column pier with only one pier at the pier position.

[0041] Such as figu...

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Abstract

The invention discloses a widening method of an interchange ramp bridge. The widening method comprises the following steps: 1, widening an end cross beam and a platform cap; 2, adjusting the distancebetween supports at a bridge abutment after the strength of the concrete poured in the first step reaches 100%, and additionally adding transverse limiting blocks on the two sides of a single-column pier; 3, reinforcing the upper structure of the bridge, wherein steel plates are pasted to the outer sides of the beam bottom and the web; 4, widening a box girder cantilever; 5, carrying out unilateral loading treatment on the end part of the box girder; 6, paving a bridge floor, and installing anti-collision guardrails. The method has the beneficial effects that in the process of widening the ramp bridge, the existing ramp is less dismantled, the plane linearity, span and elevation of the original bridge can be reserved, the construction is easy, and the mechanical indexes such as bending resistance, shearing resistance and torsion resistance of each section can be met after widening.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a method for widening an overpass ramp bridge. Background technique [0002] The ramp bridge is an auxiliary connecting road section used for the overpass entering and exiting the main line. It is usually a short section of auxiliary roads that provide vehicles entering and exiting bridges, tunnels, expressways, elevated roads, or connecting roads for land bridges, ramps, and leads of other main lines. [0003] At present, with the gradual increase in the number of vehicles with vehicles, the demand for roads is also increasing, including the demand for ramp bridges. However, many ramp bridges that have been built did not consider the large carrying demand at the beginning of the design, resulting in many Existing ramp bridges cannot meet the needs of transportation, so many ramp bridges urgently need to be expanded and widened. Since ramp bridges are gen...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D19/10E01C1/04
Inventor 李量黄华华蔡冬军刘鹏飞
Owner CHONGQING ZHONGSHE ENG DESIGN