Steel bar splicing structure with anchoring ends at joint of prefabricated bridge decks

Abstract

The invention discloses a steel bar splicing structure with an anchoring end at a joint of prefabricated bridge decks, belongs to the field of bridge structures, and mainly solves the problem of weakcracking strength at the joint of the prefabricated bridge decks. According to the steel bar splicing structure, the overall performance of the joint is improved by pouring UHPC ultrahigh-strength concrete and the high-bonding anchoring capacity of reinforcing steel bars with anchoring ends and the concrete at the joint. The threaded steel bar is located in the center of the bridge deck, the bearing capacity is enhanced in the bridge deck, the tensile capacity and the anti-shearing capacity are improved in the joint, and therefore the problem that the joint is prone to cracking and damage is solved. And the joints and the bridge deck slabs are connected into a whole through the anchoring end nuts and the connecting plates. The steel bar splicing structure with the anchoring end at the joint of the prefabricated bridge deck slab is clear in stress mode, the strength of the joint of the prefabricated bridge deck slab can be remarkably improved by adopting the UHPC, the high-strength anchoring nut and the integral steel bar connecting steel plate, the stress defect of the joint of the bridge deck slab is overcome, construction is convenient, fast and efficient, the construction cost is reduced, and the use performance is improved.

Description

technical field [0001] The invention relates to a splicing structure of steel bars with anchor ends at the seams of prefabricated bridge decks, which belongs to the field of bridge structures. Background technique [0002] With the development of construction technology, the prefabricated assembly method has become a new development trend in bridge construction and is widely used in various bridge decks. The safe and reasonable assembly structure and assembly technology of adjacent segments is the key to using the prefabricated assembly method of bridge decks. Seeking a reasonable, safe and effective joint structure is a research hotspot for many engineers and scholars. Although the prefabricated assembly method can be constructed quickly and conveniently, compared with the monolithic bridge, the strength of the prefabricated bridge deck is weak at the junction of the joints, easy to crack, frequent quality problems, and the joints are prematurely destroyed during use . Th...

AI Technical Summary

Problems solved by technology

Although the prefabricated assembly method can be constructed quickly and conveniently, compared with the monolithic bridge, the strength of the prefabricated bridge deck is weak at the junction of the joints, easy to crack, frequent quality problems, and the joints are prematurely destroyed during use

Images