Energy-consuming prefabricated pier structure and construction method thereof

Abstract

The invention discloses an energy-consuming prefabricated pier structure and a construction method thereof. Multiple prefabricated assembled piers are vertically arranged on the upper surface of a bearing platform, every four prefabricated assembled piers form a group, multiple dampers are arranged among the prefabricated assembled piers in one group, and a cover beam is arranged on the upper surface of the prefabricated assembled piers; and a pre-stressed tendon penetrates through the prefabricated assembled piers to be respectively connected with the bearing platform and the cover beam. The energy-consuming prefabricated pier structure has the advantages that one pier is divided into four-leg frame piers respectively composed of four pier columns, so that the sectional area of each segment can be effectively reduced, the height of each segment can be increased, the quantity of the segments of a single pier body is reduced, and the construction efficiency and mechanical properties of the prefabricated segment assembled piers are improved; and energy consumption of the dampers in operation is provided in two aspects of soft steel deformation and friction energy dissipation of a mandrel and a lantern ring, and energy produced by plane deformation and spatial deformation can be absorbed, so that different vibration modes which can be produced by the piers under strong shock can be adaptive.

Description

technical field [0001] The invention relates to a bridge component, in particular to an energy-dissipating assembled bridge pier structure and a construction method with dampers between pier columns. Background technique [0002] The prefabricated segmental assembly piers adopt the process of factory prefabricated segments and on-site assembly, which can improve the quality of component production, shorten the construction period, reduce the construction area, and make later maintenance and dismantling more convenient and economical, reducing the cost of the whole life cycle. Due to the limitation of road transportation, the height of a single section is limited, resulting in many pier column sections, and the tension side of the joint between sections is allowed to open under horizontal load, on the one hand, the structure loses the tension of the concrete. The energy dissipation provided by cracking and steel bar deformation and elongation, on the other hand, also causes g...

AI Technical Summary

Problems solved by technology

Due to the limitation of road transportation, the height of a single section is limited, resulting in many pier column sections, and the tension side of the joint between sections is allowed to open under horizontal load, on the one hand, the structure loses the tension of the concrete. The energy dissipation provided by cracking and steel bar deformation and elongation, on the other hand, also causes greater local stress at the joints on the compression side, resulting in more prone to damage near the joints and poor mechanical performance

Too many segments will also increase the difficulty of construction, reduce the construction speed, and it is not easy to repair after the earthquake

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