Construction method of long-service-life bridge deck pavement structure capable of preventing bridge deck cracks

Abstract

The invention discloses a construction method of a long-life bridge deck pavement structure for preventing bridge deck cracks, which comprises the following steps: A, after a bridge body is erected, paving a steel fiber non-shrinkage concrete leveling layer on a bridge deck slab; b, an expansion joint is cut in the steel fiber non-shrinkage concrete leveling layer, the joint is filled with a TST elastic material, and the concrete leveling layer is divided into a plurality of plates; and C, a stress absorption belt is pasted on the expansion joint of the concrete leveling layer. And D, uniformly spreading a layer of cement-based capillary crystalline waterproof material on the concrete leveling layer. And E, paving an asphalt concrete pavement layer. The TST elastic expansion joints and the stress absorption belts are adopted for providing deformation expansion amount for the bridge deck structure, stress is dissipated, and a bridge deck pavement layer is prevented from being broken; the bridge deck pavement layer is clear in structural stress, high in construction operability and capable of effectively prolonging the service life of bridge deck pavement.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, in particular to a construction method of a long-life bridge deck pavement structure for preventing bridge deck cracks. Background technique [0002] The pavement structure of the bridge deck is mostly composed of "concrete leveling layer + asphalt concrete pavement layer". During the operation and use of the bridge, under the repeated action of heavy-duty vehicles, the bridge deck structure repeatedly deflects. Because the concrete leveling layer is a rigid structure, the concrete leveling layer is easily crushed and cracked. Cracks in the concrete leveling layer will be further reflected to the asphalt concrete pavement layer, resulting in cracking of the pavement layer, and rainwater will penetrate into the asphalt concrete pavement layer and the concrete leveling layer through the cracks. Under the repeated action of vehicle load, rain, freezing and other actions, the cracks in th...

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Problems solved by technology

[0003] In view of the above problems, the present invention provides a long-life bridge deck pavement structure construction method to prevent bridge deck cracks, which solves the problem that conventional bridge deck pavement structures are prone to cracking and damage under heavy traffic and rain

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