A combined type seamless expansion joint structure used for bridge pavement structures

Abstract

A combined type seamless expansion joint structure used for bridge pavement structures is disclosed. The expansion joint structure includes a straddle steel plate spanning an expansion joint, and an elastic telescoping component between two pavement structures. The bottom surface of the straddle steel plate is provided with a self-leveling mortar base layer paved on two sides of the top surface of the expansion joint. The elastic telescoping component covers the straddle steel plate and the self-leveling mortar base layer. Bottom two sides of the elastic telescoping component are provided with two mounting slots longitudinally. Fiber rods are disposed in the mounting slots. Anchoring adhesion seams are between the elastic telescoping component and the pavement structures. The anchoring adhesion seam and the mounting slot which are at same side are communicated through a connecting slot in the bottom surface of the elastic telescoping component. The anchoring adhesion seams, the mounting slots and the connecting slots are filled with flexible structural glue. The expansion joint structure has low-temperature toughness, a characteristic of high-speed deformation resilience under heavy loads and a simple structure, and is convenient to construct.

Description

technical field [0001] The invention relates to a combined seamless expansion joint structure for bridge pavement structure. Background technique [0002] Bridge expansion joints are an important part of bridge design, construction, and maintenance. They are designed to ensure the smooth operation of vehicles under the conditions of environmental temperature changes and structural load-bearing expansion and expansion of the bridge structure. A special device that can be freely deformed is set between them. At present, the bridge expansion joint devices used at home and abroad can be divided into six types: seamless type, filling butt joint type, embedded butt joint type, rubber plate type, steel structure support type and steel structure modular type. [0003] Compared with other structures (or components) in the bridge design and construction, the bridge expansion joint device has a small volume or cost. In the environment polluted by vehicle exhaust gas, it is the weakes...

AI Technical Summary

Problems solved by technology

The actual working condition of the bridge expansion joint structure is that several small effective lengths bear long-term temperature deformation and impact load. Therefore, typical diseases such as low temperature and fatigue cracking, rutting and permanent deformation, and bond interface damage with the original structure of the bridge expansion joint , if we only improve or innovate unilaterally such as material, structure or bonding, it is obviously impossible to meet the requirements of seamless expansion joints

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