Beam transport structure for newly constructed upper bridge on existing bridge and beam transport method through existing bridge

Abstract

The invention discloses a beam transport structure for a newly constructed upper bridge on an existing bridge. The beam transport structure comprises track mechanisms laid on a lower bridge floor, anda plurality of beam transport trolleys arranged on the track mechanisms; the lower bridge floor comprises a left bridge floor and a right bridge surface for opposite running of vehicles; the track mechanisms comprise a first track mechanism, a second track mechanism, a third track mechanism and a fourth track mechanism; the first track mechanism and the second track mechanisms are laid on the left bridge surface; the third track mechanism and the fourth track mechanisms are laid on the right bridge surface; each track mechanism is provided with two beam transport trolleys spaced back and forth; and each track transport trolley of each track mechanism is provided with a pushing device for supporting a transported box girder segment. The invention further discloses a beam transport method through an existing bridge. The technological means such as two-parallel-bridge load-bearing and box girder segment weight distribution in the longitudinal direction of the bridge through the track mechanisms, the ability of the existing bridge for transport the box girder segments is greatly improved, a sufficient transport space for transporting the ultralong and ultra-heavy box girder segments is provided, safety is ensured, and the beam transport efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction. Background technique [0002] In modern society, bridges are playing an increasingly important role. Not only do bridges need to be crossed in traditional waters (rivers, etc.), ditches, etc., but they also play an important role in three-dimensional traffic in cities. [0003] With the development of cities and the improvement of people's living standards, the number of motor vehicles in my country has increased rapidly year by year, which has brought increasing pressure on traffic. In some occasions with heavy traffic flow, existing single-story bridges The traffic capacity cannot meet people's traffic needs. In order to ensure smooth traffic, new bridges need to be erected above the existing bridges in order to increase traffic capacity. [0004] Building a new bridge above the existing bridge is a new task, and the box girder segments of the upper new bridge need to be transporte...

AI Technical Summary

Problems solved by technology

[0006] For larger box girder segments (in the occasions where double-layer or multi-layer bridges need to be built, usually large bridges, the box girder segments are longer and heavier), in the prior art, it is impossible to use the vehicle to transport the existing bridges on the lower layer. For transportation, the box girder segment can only be transported by erecting brackets. It is necessary to set up brackets under and above the existing bridge, otherwise the existing bridge will be collapsed, which will greatly reduce the efficiency of beam transportation. , and increased construction costs

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