Deformable connection method and deformable connection structure between steps and floors of concrete trestle bridge

Abstract

A deformable connection method and deformable connection structure between concrete trestle steps and floor, wherein the trestle steps are constructed in a layered structure, and embedded iron pieces are arranged on the beams of the floor; a certain distance is left between the trestle steps and the floor. Deformation joint; the iron sheet is installed on the upper end face of the concrete step structure and the floor slab; the iron sheet forms a U-shaped structure in the deformation joint, and the U-shaped iron sheet extends in the deformation joint; the U-shaped iron sheet is filled with asphalt hemp; Asphalt wood fiber board is laid on the wire; cement mortar cushion is laid on the iron sheet; the profiled steel plate is covered on the cement mortar cushion; Leave a lateral gap; this gap is closed with a polyurethane sealing material after welding. The invention can meet the demand for deformation joints in large-scale projects, and at the same time plays the functions of settlement, shock resistance, expansion and contraction, and improves waterproof performance.

Description

technical field

[0001] The invention relates to a building wall connecting method and a connecting structure, in particular to a deformable connecting method and a deformable connecting structure between steps and floors of a concrete trestle bridge. Background technique

[0002] Trestle is a station, port, mine or factory, used for loading and unloading goods or getting on and off passengers, or a temporary bridge structure specially used for construction site traffic, mechanical layout and overhead operations. In civil engineering, temporary bridge facilities built for transporting materials, equipment, and personnel are divided into wooden trestle bridges and steel trestle bridges according to the materials used. The trestle in a railway ferry is a bridge building for rolling stock to drive on and off the ferry.

[0003] At present, the trestle structure composed of steel structure and concrete is widely used in railway engineering, tunnel construction, electric power en...

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