Structure for reinforcing pile and abutment connection and construction method thereof

Abstract

The invention relates to a structure for reinforcing pile and abutment connection and a construction method thereof. The structure comprises a bridge pile foundation and a bridge abutment rigidly connected to the top of the bridge pile foundation, the upper end of the bridge pile foundation is sleeved with a steel sleeve, the upper end of the steel sleeve is fixedly connected with a steel top plate, the top surface of the steel top plate fits the bottom surface of the bridge abutment, the steel top plate and the bridge abutment are in on-site pouring connection through shearing connectors, andthe top surfaces of the steel top plate, the steel sleeve and the bridge pile foundation are flush. The structure is simple and reasonable, the construction is convenient, the stress state of concrete at the junction of the bridge pile foundation and the bridge abutment can be improved, the safety and earthquake resistance of a bridge are improved, the service life is prolonged, and the structurehas important practical significance and engineering application value.

Description

Technical field: [0001] The invention relates to a structure and a construction method for strengthening the connection of pile platforms. Background technique: [0002] During the actual use of the bridge, due to the action of vehicle load, temperature or earthquake, the concrete at the junction of the pile foundation and the abutment or cap is prone to damage, which will lead to the destruction of the bridge substructure and other problems, which will affect the normal operation of the bridge. usage of. The main reasons for the failure of the connection between the bridge pile foundation and the abutment or cap: First, the stiffness of the pile foundation is small, while the stiffness of the abutment (or cap) is relatively large. The sudden change in stiffness at the joint between the foundation and the abutment is prone to stress concentration, which causes the pile foundation to experience greater stress at the joint, and the pile foundation concrete is damaged; second,...

AI Technical Summary

Problems solved by technology

[0002] During the actual use of the bridge, due to the action of vehicle load, temperature or earthquake, the concrete at the junction of the pile foundation and the abutment or cap is prone to damage, which will lead to the destruction of the bridge substructure and other problems, which will affect the normal operation of the bridge. usage of

The main reasons for the failure of the connection between the bridge pile foundation and the abutment or cap: First, the stiffness of the pile foundation is small, while the stiffness of the abutment (or cap) is relatively large. The sudden change in stiffness at the joint between the foundation and the abutment is prone to stress concentration, which causes the pile foundation to experience greater stress at the joint, and the pile foundation concrete is damaged; second, the abutment is under temperature load. Reciprocating motion and rotation occur, causing the concrete at the joint of the pile foundation to be crushed and cracked, and the pile foundation is prone to shear failure at the joint of the abutment under the action of an earthquake

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