Method and structure of deformable connection between concrete trestle step and floor

Abstract

The invention discloses a method and structure of deformable connection between a concrete trestle step and a floor. The concrete trestle step is constructed to be of a layered structure, an embedded iron casting is installed on a beam of a floor slab, a deformation joint with a certain size is reserved between the trestle step and the floor slab, an iron sheet is installed on the upper end face of the concrete trestle step structure and the upper end face of the floor slab in a complete covering mode, the portion, in the deformation joint, of the iron sheet is of a U-shaped structure, the U-shaped iron sheet extends in the deformation joint, the U-shaped iron sheet is filled with bitumastic oakum, a bitumastic wood-wool plate is laid on the bitumastic oakum, a cement mortar bedding cushion is laid on the iron sheet, a section steel plate covers the cement mortar bedding cushion, the end portion, close to the floor, of the section steel plate is fixedly welded to the embedded iron casting, a transverse gap is reserved between the section steel plate and the floor, and the gap is plugged through polyurethane sealing materials after being welded. According to the method and structure of deformable connection between the concrete trestle step and the floor, the requirement of large-scale projects for the deformation joint can be met, the effect of sedimentation, the effect of shock prevention and the effect of stretching and contraction are achieved, and performance of water resistance is improved.

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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Problems solved by technology

[0004] The main purpose of the present invention is to propose a brand-new deformable connection method and deformable connection structure between the steps of the concrete trestle and the floor under the existing technical conditions, so as to solve the deformation and waterproof of the steps and the floor of the concrete trestle in the project connection needs

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