Structure for enhancing transverse connection of hollow slab beams through steel hoops

Abstract

The invention discloses a structure for reinforcing the transverse connection of hollow slab girders through steel hoops, which comprises hollow slab girder bodies, inter-beam holes are formed between the hollow slab girder bodies, ribbed upper hoops are arranged at the tops of the hollow slab girder bodies, upper fixing plates are welded on the inner sides of the ribbed upper hoops, and opposite-pulling anchor rods are welded on the inner sides of the upper fixing plates. A ribbed lower steel hoop and a movable plate are arranged at the lower end of the outer surface of the counter-pulling anchor rod in a sleeving mode, the top of the movable plate is welded to the bottom of the ribbed lower steel hoop, anchor bolt holes are formed in the left side and the right side of the ribbed lower steel hoop, and chemical anchor bolts are arranged on the inner sides of the anchor bolt holes. Through the effects of the ribbed upper hoop, the ribbed lower steel hoop, the upper fixing plate, the counter-pulling anchor rod, the movable plate, the anchor bolt hole, the inter-beam hole and the high-strength shrinkage-free slurry body, the problems that transverse connection of an existing hollow plate beam is scattered, the requirement for integrity of the hollow plate beam cannot be met, and then the service life of the hollow plate beam is shortened are solved.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement or reconstruction in civil engineering, in particular to a structure in which steel hoops reinforce the transverse connection of hollow plate girders. Background technique [0002] A large number of existing bridges have problems affecting the safety and use of bridges due to low early design loads, changes in structural use functions, construction defects, damage during long-term use, aging, and increased traffic volume. The diseases of the upper parts of hinged hollow slab bridges are becoming more and more serious, especially problems such as hinge joint disease, bridge deck damage, beam body cracks, and plate girder fractures in extreme cases. Compared with the beam, the hinge joint of the hollow slab girder has a large difference in rigidity, which causes the integrity of the entire upper structure to be weak. The discreteness of the superstructure is the main cause of the hinge...

AI Technical Summary

Problems solved by technology

[0002] A large number of existing bridges have problems affecting the safety and use of bridges due to low early design loads, changes in structural use functions, construction defects, damage during long-term use, aging, and increased traffic volume. The upper part of hinged hollow slab bridges is becoming more and more serious, especially problems such as hinge joint disease, bridge deck damage, beam cracks, and plate girder fractures in extreme cases.

Compared with the beam, the hinge joint of the hollow slab beam has a large difference in rigidity, resulting in the weak integrity of the entire upper structure.

The discreteness of the superstructure is the main cause of the hinge joint disease and bridge deck pavement damage, so strengthening the lateral connection to improve the integrity of the beam part is fundamental to improve the hinge joint disease, and it is necessary to check the plate girder for some seriously overloaded road sections However, the existing horizontal connection of hollow slab girders is relatively scattered, which cannot meet the requirements of the integrity of hollow slab girders, thereby reducing its service life. Therefore, we propose a structure in which steel hoops strengthen the horizontal connection of hollow slab girders

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