A bionic bridge pier and its construction method

Abstract

The invention discloses a bionic bridge pier and a construction method thereof. The bionic bridge pier comprises a bridge pier body arranged on a foundation of the bridge pier, wherein the bridge pier body comprises a solid pier bottom section, a hollow pier body section and a branch-shaped pier top section which are sequentially connected from bottom to top, the branch-shaped pier top section comprises a plurality of pier branches which are arranged on the upper end surface of the hollow pier body section in a symmetric or non-symmetric manner and extend obliquely and upwards, the hollow pier body section comprises prestressed steel strands and a plurality of hollow pier body blocks, adjacent hollow pier body blocks are in positioned mortise-and-tenon joint, the prestressed steel strands are arranged in the side walls of the hollow pier body blocks and penetrate through the hollow pier body section, the lower ends of the prestressed steel strands are anchored in the solid pier bottom section, each pier branch comprises multiple groups of assembling components and a plurality of prestressed ribs, the assembling components are in positioned mortise-and-tenon joint, the cross section of each pier branch is a solid or hollow section, two adjacent assembling components are anchored through the prestressed ribs arranged in the assembling components, and the assembling component at the bottommost end of each pier branch is anchored on the upper end surface of the hollow pier body section through the prestressed ribs arranged in the assembling components.

Description

technical field [0001] The invention belongs to the technical field of bridge pier construction, and in particular relates to a bionic bridge pier and a construction method thereof. Background technique [0002] Ordinary bridge structures rely on piers to support and transfer the upper load. With the increase of traffic volume, many bridges with large spans and wide widths have appeared. Due to the unbalanced load of vehicles and dangerous operation methods such as overrunning, the upper main girder structure has laterally overturned. Accidents happen from time to time, and overturning will cause great harm to the bridge structure and traffic operation. In addition, the force of the bridge structure is closely related to the span, so the reasonable layout of bridge piers has become an important design content to ensure the safety of bridge structure spanning and operation. Usually, the pier structure along the longitudinal direction of the bridge is set according to the requ...

AI Technical Summary

Problems solved by technology

Bridge design is based on the center line of the pier or the distance between the center lines of the supports on the pier as the calculated span for structural analysis; the problem of unbalanced load in the transverse direction of the load is not prominent for narrow bridges, but some urban viaducts and overpasses are very wide in the transverse direction. The eccentric load of the transverse bridge poses a huge threat to the safe operation of the bridge structure. It can be clearly seen from some bridge overturning accidents that the upper girder structure is tilted and the girder falls, but the overall structure is not damaged. In addition to load factors such as eccentric loads, insufficient lateral support of bridge piers is an important cause of accidents. In addition, large-tonnage bearings for long-span and wide-width bridges will also increase bridge construction and maintenance costs.

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