Construction method for installing counterweight concrete on large-span multi-box steel box girder

Abstract

The invention discloses a construction method for installing counterweight concrete on a large-span multi-box steel box girder, which comprises a machine body, one side surface of the machine body is provided with a first conveyer belt, the first conveyer belt is connected with a second conveyer belt through a transition box, and the second conveyer belt is located in the machine body and obliquely leans against a side support; a plurality of sets of assembling grooves are formed in the side supports at equal intervals, the assembling grooves are used for containing balance weight concrete blocks, and electric discharging doors are arranged at the bottoms of the assembling grooves. According to the construction method for installing the counter weight concrete on the large-span multi-box steel box girder, the machine is arranged to be used for accurately placing the counter weight concrete into a steel box, fixing is achieved, the balance problem of the space in the box is solved, a positioning plate structure, a transporting and assembling structure, a clamping mechanism and a tightening structure are sequentially designed and utilized, and the construction efficiency is improved. And the automation degree is high, time and labor are saved, operation is conducted in a whole row, time and labor are saved, the device is suitable for different working conditions, and better use prospects are brought.

Description

technical field [0001] The invention relates to the technical field of building bridge construction, in particular to a construction method for installing counterweight concrete on a large-span multi-box steel box girder. Background technique [0002] Steel box girder is generally connected by top plate, bottom plate, web plate, transverse diaphragm, longitudinal diaphragm and stiffener through full welding. Because of its easy processing and strong structural bearing capacity, it is suitable for all kinds of special-shaped landscape bridges and bridges. For curved bridges, due to the special shape of the structure or the curved plane, and the light weight of the steel structure, it is very easy to cause the negative reaction force of the bearing, that is, the bearing is empty (commonly seen in the beam end bearing), which is used in the corresponding position in the prior art The concrete block is added at the bottom of the box girder due to the lack of fixation, resulting ...

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Problems solved by technology

[0002] Steel box girders are generally connected by roof, floor, web, transverse diaphragm, longitudinal diaphragm and stiffeners through full welding. Because of their easy processing and strong structural bearing capacity, they are suitable for various special-shaped landscape bridges and Curved bridges, due to the irregular shape of the structure or the plane is curved, and the steel structure is light in weight, it is very easy to cause the negative reaction force of the support, that is, the support is empty (commonly found in the beam end support), and the corresponding position is used in the prior art The counterweight concrete is placed, and the concrete blocks added to the bottom of the box girder due to lack of fixation will cause the concrete blocks to shift or tilt after a long time of use, resulting in poor counterweight effect, unable to balance the space in the box, and even steel boxes. The safety of the beam, and the current method of adding concrete blocks is manual handling, which is time-consuming and laborious. For this reason, we propose a construction method for installing counterweight concrete on large-span multi-box steel box girders

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