Hanger platform for T-shaped beam maintenance and reinforcement

Abstract

The invention discloses a hanger platform for T-shaped beam maintenance and reinforcement. The hanger platform comprises a platform fixing device and a working platform. The platform fixing device isarranged on a T-shaped beam in an assembled mode. The working platform comprises a plurality of hanger sets, and all the hanger sets are arranged at intervals in the longitudinal direction of a bridge. Each hanger set comprises two vertically-arranged hangers which are arranged in a spaced mode in the transverse direction of the bridge. The tops of the hangers are detachably connected to the platform fixing device. A rectangular frame is detachably arranged between every two adjacent hanger sets, and a passage for allowing a maintainer to pass through is formed between each rectangular frame and the platform fixing device. All the rectangular frames are located in the same horizontal face. By adopting modular construction, the construction time for platform erecting is short, the construction technology is simple, operation is easy, and safety of a constructor can be ensured.

Description

technical field [0001] The invention relates to the field of maintenance engineering, in particular to a hanger platform for T-beam maintenance and reinforcement. Background technique [0002] T-beam bridges are simply supported reinforced concrete T-section beams. Because the section design is economical and reasonable, the compressive capacity of concrete is fully utilized, the area of ​​concrete in the tension zone is minimized, and the weight of the T-beam structure is reduced. Most of the construction techniques adopt prefabrication and assembly methods, and integral The cast-in-place method has the characteristics of light lifting weight, simple construction, and less investment in equipment. It is widely used in small and medium-span bridges on existing highways in my country. However, under the long-term action of overloaded vehicles, the T-beam will suffer fatigue damage, the bending bearing capacity will decrease, and there will be vertical cracks on the inner web ...

AI Technical Summary

Problems solved by technology

However, under the long-term action of overloaded vehicles, the T-beam will suffer fatigue damage, the bending bearing capacity will decrease, and there will be vertical cracks on the inner web and bottom plate of the span; oblique cracks at the end will occur due to concrete shrinkage or insufficient shear bearing capacity; Since the T-beam is a prefabricated assembly structure, the diaphragms between the T-beams are connected by welding the lower connecting steel plates. This structure has its inherent disadvantages, that is, the lower connection of the diaphragm is under the load of the vehicle The mortar is very prone to cracking, damage, and peeling, resulting in exposed and corroded connecting steel plates, stress concentration at the solder joints, fatigue damage, and even desoldering, thereby weakening the transverse connection between T-beams and deteriorating the stress of each T-beam, tending to a single beam force

[0003] In view of the above problems, it is necessary to repair and strengthen the T-beam. Generally, carbon fiber material paste, steel plate paste and other maintenance operations are carried out on the T-beam. At present, conventional maintenance platforms such as maintenance vehicles, mobile hanging baskets and hanging baskets are usually used, but the current conventional maintenance platforms are erected. The construction time is long, the construction process is complicated, the operation is inconvenient, and the safety of construction personnel cannot be guaranteed

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