Slot type and socket type combined connecting structure of prefabricated bridge substructure

Abstract

The invention discloses a slot type and socket type combined connecting structure of a prefabricated bridge substructure. The slot type and socket type combined connecting structure comprises a prefabricated pier, a prefabricated pier main rib, a bearing platform, a positioning cushion block, a cushion layer, a corrugated pipe, a reinforcing mesh, a steel formwork and a post-pouring cup opening. Asteel formwork is embedded in the lower portion of the prefabricated pier, a mortar cushion layer is arranged between the bottom face of the prefabricated pier and the top face of the cup opening ofthe bearing platform, the corrugated pipes are embedded in the bearing platform, and the number and positions of the corrugated pipes need to be matched with those of the notches and the prefabricatedpier main ribs so that the prefabricated pier main ribs can be inserted into the corrugated pipes of the bearing platform. The reinforcing mesh is arranged in a post-pouring cup opening of the bearing platform, and the prefabricated pier and the bearing platform are connected into a whole through post-pouring concrete. The method is simple and convenient in construction, controllable in quality,easy to control, safe and reliable; by extending the prefabricated pier main reinforcements outwards and arranging the post-pouring cup openings, the bearing capacity is greatly improved, the strengthis high, the ductility is good, and the connecting structure can be used for connecting prefabricated bridge lower structures in high earthquake areas and is wide in application range.

Description

[0001] The invention relates to a slot type and socket type combined connection structure of a prefabricated assembled bridge substructure, which belongs to the field of assembled bridge engineering. Background technique [0002] In recent years, with the continuous upgrading and policy advancement of my country's transportation engineering industrialization construction, a large number of prefabricated assembly structures have been applied to bridge engineering, and prefabricated assembly technology has become more and more widely used. At present, the commonly used methods of prefabricated assembly of bridge substructure mainly include grouting sleeve connection, socket connection, slot connection and so on. The construction of grouting sleeve connection is convenient and quick, but the construction accuracy and grouting professional technical ability are required to be high, and the quality of on-site grouting is not easy to control; the socket connection and slot connection...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical defects of the current common methods for connecting prefabricated bridge substructures and the need for high-quality development of bridge engineering prefabricated assembly technology, the present invention provides a high-quality, efficient and universal prefabricated bridge substructure socket type and socket type Composite connection structure

Improve the defects of poor ductility and unknown seismic performance of the existing slot connection and socket connection technology, and overcome the defects of uncontrollable grouting quality and difficulty in matching construction accuracy of the existing grouting sleeve connection technology

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