Self-resetting guide plate structure suitable for seamless bridge and method thereof

Abstract

The invention provides a self-resetting guide plate structure suitable for a seamless bridge and a method thereof. The self-resetting guide plate structure comprises a bridge abutment, a main beam lapped on the bridge abutment and a guide plate fixedly connected with the main beam, the guide plate is L-shaped; the guide plate comprises a horizontal plate fixedly connected with the main beam and avertical plate extending downwards from one end, deviating from the main beam, of the horizontal plate; an expanded foundation is fixed at the lower end of the vertical plate; unbonded prestressed tendons are arranged in the vertical plates; the upper ends of the unbonded prestressed tendons are anchored to the tops of the guide plate, the lower ends of the unbonded prestressed tendons are anchored to the bottom of the expanded foundation. By means of the flexibility of the vertical plate of the L-shaped guide plate, the self-resetting capacity and the anti-overturning capacity of the guide plate under the earthquake action are provided through the unbonded prestressed tendons.

Description

technical field [0001] The invention relates to a self-resetting guide plate structure and method suitable for seamless bridges. Background technique [0002] Bridge expansion joints are weak points in bridge structure design, and have become one of the difficult problems in bridge construction and maintenance. It is not only expensive but also requires long-term maintenance. Chinese designers and scholars have made a lot of valuable explorations in the mechanism, performance and materials of expansion joints, which have played a positive role in solving the problem of longitudinal deformation of bridges, but they cannot fundamentally solve the problem of the vulnerability of expansion joints. With the development of the economy and the increase of traffic pressure, the phenomenon of bridge expansion joint damage is becoming more and more serious, and the increase of maintenance cycle and maintenance cost is also increasing the pressure on the maintenance of bridge expansion...

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Problems solved by technology

[0005] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that with the increase of traffic pressure, the damage phenomenon of bridge expansion joints is becoming more and more serious, and there are problems of difficult maintenance and high maintenance costs

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