Mortise and tenon joint type self-resetting pier with half-moon-shaped energy dissipater

Abstract

The tenon-and-mortise type self-resetting pier comprises a half-cast-in-place pier, an upper segment pier, a half-moon-shaped energy dissipater body and prestressed tendons, a fixing groove is formed in the upper portion of the half-cast-in-place pier, a rubber cushion layer is laid on the fixing groove, a tenon is arranged on the lower portion of the upper segment pier, and the half-moon-shaped energy dissipater body is arranged on the lower portion of the half-moon-shaped energy dissipater body. The tenon is in a downward protruding shape, a second notch is formed in the periphery of the tenon, and the second notch is in an inward concave shape. According to the tenon-and-mortise type self-resetting pier with the half-moon-shaped energy dissipater, the half-moon-shaped energy dissipater body is arranged, energy dissipation pieces are made of low-yield-point steel, and energy dissipation parts do not need to be arranged through expensive materials or advanced technologies; the energy dissipation piece is designed to be detachably installed, after the energy dissipation piece is damaged in an epicenter, the performance of the pier can be restored by timely replacing the energy dissipation piece, cost and carbon emission can be reduced, and the half-moon-shaped steel plates located on the energy dissipation piece can be additionally arranged and reduced according to different working conditions and engineering requirements.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a mortise and tenon type self-resetting bridge pier equipped with a half-moon energy dissipator. Background technique [0002] With economic development and improvement of social living standards, the consumption of energy and resources is accelerating. For traditional cast-in-place bridges, there are problems such as long construction period, complicated construction process, and irreparable repair after the earthquake, which will cause a lot of waste of resources and a large amount of engineering residues. Prefabricated construction refers to the prefabricated components in the prefabrication yard or site in advance, and then transported to the bridge site for assembly, which can reduce environmental pollution and have little impact on the traffic and residents' lives around the construction site. Especially for energy saving and emission reduction, prefabricated te...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a mortise and tenon type self-resetting bridge pier with a half-moon energy dissipator, to solve the above-mentioned background technology. For the traditional self-resetting pier system, the prestressed connection method is usually used to provide sufficient self-resetting. ability, but the prestressed tendons need to bear the shear force at the segmental joints, which is easy to cause damage to the prestressed tendons; this system has good self-resetting performance, but the energy dissipation capacity is poor, and it is often added at the segmental joints Energy-dissipating steel bars can achieve the effect of energy dissipation through the yielding of energy-dissipating steel bars, but the energy-dissipating steel bars cannot be replaced and restored after yielding, resulting in large residual displacement of the bridge pier, which is not conducive to the post-earthquake recovery of the bridge pier

Images