Concrete hollow slab bridge reinforced by transverse steel beams

Abstract

The invention discloses a concrete hollow slab bridge reinforced by transverse steel beams. The concrete hollow slab bridge comprises a bridge deck beam constituted by arranging a plurality of hollow plate beams in parallel and at least one stiffening cross beam which is arranged on the bottom surface of the bridge deck beam and is used for transversely reinforcing the bridge deck beam so as to enable all the hollow plate beams to transversely transfer loads on the hollow plate beams, wherein the stiffening cross beam is fixedly connected with the hollow plate beams. According to the concrete hollow slab bridge reinforced by the transverse steel beams, disclosed by the invention, the overall structural strength is high, the bearing capacity of the bridge is strong, the single-plate stress can be avoided by reinforcing through the transverse steel beams, the service life of the bridge is prolonged, and the concrete hollow slab bridge has the advantages of simple structure construction, easiness in ensuring engineering construction quality, good stress performance, obvious reinforcing effect, convenience and quickness in construction, lower requirements for machines, tools and equipment required for construction and significant economic benefits, and is further conductive to popularization.

Description

technical field [0001] The invention relates to a bridge construction, in particular to a concrete hollow slab bridge reinforced with transverse steel girders. Background technique [0002] Concrete hollow slab bridge is a bridge with multiple hollow slab longitudinal girders along the bridge direction to form a spanning structure. It has the advantages of convenient construction, low engineering cost, standardized centralized prefabrication production, and small building height. Concrete hollow slab bridges are prone to various degrees of functional and structural defects, such as concrete defects, cracks, and long-term shedding of hinge joints. At the same time, due to improper construction methods of concrete hollow slab bridges, the width of the hinge joints between the actual construction hollow slab beams is much larger than the designed one. The width of the hinge joints, after a period of operation, the hinge joints are prone to diseases, which will lead to the decli...

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Problems solved by technology

[0002] Concrete hollow slab bridge is a bridge with multiple hollow slab longitudinal girders along the bridge direction to form a spanning structure. It has the advantages of convenient construction, low engineering cost, standardized centralized prefabrication production, and small building height. Concrete hollow slab bridges are prone to various degrees of functional and structural defects, such as concrete defects, cracks, and long-term shedding of hinge joints. At the same time, due to improper construction methods of concrete hollow slab bridges, the width of the hinge joints between the actual construction hollow slab beams is much larger than the designed one. The width of the hinge joints, after a period of operation, the hinge joints are prone to diseases, which will lead to the decline of the bridge's transverse force transmission performance, and make the bridge deck prone to longitudinal cracks along the hinge joints, which will affect the normal use of the hollow slab bridge. Plates are damaged plate by plate under force

[0003] In addition, for concrete hollow slab bridges with longitudinal cracks on the bridge deck along the hinge joints, the usual corresponding treatment measures are to eradicate the old deck and replace it with a new deck. The requirements for machinery and equipment are high, and the construction period is long, which has a great impact on traffic. The structural damage of hinge joints has not been fundamentally cured, and the hinge joints between hollow slab beams are prone to cracking again under the action of fatigue load and concentrated stress after repair, and the service life is short

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