Device for improving energy consumption and self-resetting capability of segmental assembly bridge pier, and construction method thereof

Abstract

The invention discloses a device for improving energy consumption and self-resetting capability of a segmental assembly bridge pier, and a construction method thereof, being applied to a pre-stress precast segmental assembly bridge pier formed by a bearing platform and a plurality of segments. The device includes a first cylinder, a sleeve and four cylindrical compression springs, wherein a part,in the pre-stress precast segmental assembly bridge pier, directly connected to the bearing platform is the first segment; a part, in the pre-stress precast segmental assembly bridge pier, connected to the top surface of the first segment is the second segment; the first cylinder sleeves and is fixedly connected to the lower part of the outer wall of the second segment; the sleeve includes a second cylinder and an annular pedestal; the annular pedestal sleeves the bottom of the second cylinder; the sleeve sleeves the first segment; the annular pedestal is located on the top surface of the bearing platform, and is fixedly connected to the bearing platform and the first segment through bolts; and the four cylindrical compression springs are distributed surrounding the first segment symmetrically, and one end of each of the four cylindrical compression springs is fixedly connected to the annular pedestal, and the other end of each of the four cylindrical compression springs is fixedly connected to the first cylinder. The device for improving energy consumption and self-resetting capability of a segmental assembly bridge pier can effectively solve the problems of poor energy consumption capability, poor robust performance, large relative displacement of the two bottom segments, and serious damage of the plastic hinge of the root of the first segment in the precast segmental assembly pier.

Description

technical field [0001] The invention belongs to bridge engineering, and in particular relates to a device and a construction method for improving energy consumption and self-resetting ability of segmentally assembled bridge piers. Background technique [0002] Segmentally assembled bridge piers have gradually become one of the main development trends of bridge construction technology due to the advantages of mass production of components, easy quality control, on-site hoisting and installation, little interference to existing traffic, and short construction period. At present, the design of segmental prefabricated and assembled bridge piers based on seismic performance has just started, and it is mainly constructed and used in areas with medium and low intensity earthquakes. In order to further promote the application of prefabricated segmental assembled bridge piers in bridge engineering in medium and high intensity areas, further development is required . [0003] In rece...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a device and construction method for improving the energy consumption and self-resetting ability of segmental assembled bridge piers, which can effectively solve the problem of prefabricated segmental bridge piers according to the damage characteristics of segmental assembled bridge piers in earthquakes and their own structural characteristics. Assembled piers have problems such as poor energy dissipation capacity, poor robustness, large relative displacement of the two sections at the bottom, and serious damage to the plastic hinge at the root of the first section.

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