A method for transporting bridge deck girder slabs

Abstract

The invention discloses a method for transporting bridge deck girder slabs. After a prefabricated beam is transported to the tail of a bridge erecting machine by a bridge deck beam transport vehicle, the first suspension beam is driven forward and stopped at the tail of the bridge erecting machine. When the prefabricated beam moves longitudinally to the erection point, the longitudinal movement stops, and the second crane lifts another prefabricated beam. After the beam body of the two prefabricated beams is basically level, the two cranes run synchronously. The method for bridge deck beam slab transportation, through the design of the prefabricated slab structure formed by the beam transport channel, the design of the bump support of the beam transport channel plate protects the pre-embedded steel bars at the top of the beam and reduces the damage to the pre-embedded steel bars at the top of the beam. The design of the side wedge-shaped stopper can guide the beam transport vehicle to prevent accidents when the wheels deviate from the driving path. At the same time, it can prevent scattered objects on the channel surface from rolling down from both sides of the channel plate to the bottom of the bridge, causing accidents and recovering the beam transport channel plate After that, the bridge deck can be constructed to avoid the pollution of fine sand or stone powder on the top surface of the beam, and ensure the construction quality of the subsequent bridge deck.

Description

technical field [0001] The invention relates to the technical field of girder slab erection construction in the construction of urban viaducts, in particular to a method for transporting bridge deck girder slabs. Background technique [0002] Beam-slab is a combination of interacting beams and slabs in the floor. The reinforced concrete cast-in-place beam-slab system is currently the most widely used and widely applicable floor form. Its safety and economy have a great impact on buildings. The beams and slabs of the whole poured floor are an interactive whole, they are closely connected with each other, and they are jointly stressed and deformed. The main raw materials for the production of concrete beams and slabs are as follows: sand, stone, water, cement, steel and additives. [0003] In bridges, the common bridge deck beam slab transportation processes usually have the following two types: after the pre-embedded steel bars on the erected beam slab are bent and flattened,...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the deficiencies of the prior art, the present invention provides a method for transporting bridge deck girder slabs. Through the structural design of the prefabricated slab formed by the beam transportation channel, the prefabricated slab includes a prefabricated slab main body, a wedge-shaped block, a bump support, Steel pipes and guardrails. The main body of the prefabricated slab is composed of steel bars inside the slab and concrete surrounding the steel bars in the slab. The thickness of the main body of the prefabricated slab is 20cm. There are 20cm high bump supports on both sides of the prefabricated slab. The distance is 20cm, steel pipes are pre-embedded around the top of the main body of the prefabricated slab, and guardrails are installed inside the two steel pipes at the front and rear. The design of the wedge-shaped stoppers on both sides can guide the beam transport vehicle to prevent accidents caused by the wheels deviating from the driving path, and at the same time prevent scattered objects on the channel surface from rolling down from both sides of the channel plate to the bottom of the bridge, causing accidents. The bridge deck can be constructed after recycling the girder channel slab, avoiding the pollution of fine sand or stone powder on the top surface of the girder, ensuring the construction quality of the subsequent bridge deck, and solving the problem that the pre-embedded steel bars on the top of the girder are easy to scratch the tires of the girder truck, There are great potential safety hazards. The paved stone powder and fine sand pollute the roof of the beam, which affects the construction quality of the subsequent bridge deck. The amount of materials laid is large and cannot be recycled, which increases the cost of construction. The stone powder or fine sand is easy to spill from the wet joints , causing pollution to the surrounding environment

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