Replaceable shear-resistant energy consumption device for high-speed railway hollow swing pier

Abstract

The invention discloses a replaceable shear-resistant energy consumption device for a high-speed railway hollow swing pier, which is detachably mounted in an inner cavity of the hollow pier, and a plurality of energy consumption components are arranged at the bottom of the inner cavity of the hollow pier in an inclined strut manner, so that the shear-resistant capability of a pier body of the hollow pier can be ensured, and the shear-resistant capability of the pier body of the hollow pier can be improved. The problems that a traditional swing pier bottom energy dissipation device is insufficient in disassembly and installation space, the service life is affected due to environmental erosion when the energy dissipation device is arranged outside the pier bottom and the pier bottom is stressed in a concentrated mode can be solved, and the pier bottom stress area is effectively enlarged. And energy consumption accumulation can be achieved through the arrangement of the multiple dispersion energy consumption components, and the large damage probability caused by the fact that a large energy consumption device is arranged on the hollow pier can be avoided. Under normal use and frequent earthquakes, the pier does not have lift-off swing of a pier bottom interface, and the stress of the pier is the same as that of a traditional pier; under the action of design earthquakes and rare earthquakes, lift-off swing of a pier bottom interface of the pier occurs, and earthquake energy is dissipated through pier body swing and pier bottom energy dissipation components.

Description

technical field [0001] The invention belongs to the field of vibration reduction and isolation of bridge engineering, in particular to a replaceable anti-shear energy consumption device for hollow swing pier of high-speed railway. Background technique [0002] At present, the application and research of swinging piers are mainly concentrated in highway bridges, and there are few related researches on high-speed railway piers. Swing bridge piers have excellent seismic isolation and post-earthquake self-resetting capabilities. As the main energy-dissipating components of swinging bridge piers, energy-dissipating components should be easy to replace. Therefore, energy-dissipating components are mostly arranged outside the pier body for easy replacement. However, the external energy-consuming components are easily eroded by the external environment (such as rainwater, mudslides, rockfall impacts, etc.), and the service life will be greatly shortened. [0003] High-speed railway...

AI Technical Summary

Problems solved by technology

However, the external energy-consuming components are easily eroded by the external environment (such as rainwater, mudslides, rockfall impacts, etc.), and the service life will be greatly shortened.

[0003] High-speed railway piers are generally gravity piers, which have high requirements for the shear resistance of the piers, while hollow piers have relatively limited shear resistance. The existing swing piers The energy-dissipating structure at the bottom of the pier cannot provide additional shear capacity for the pier body

[0004]The energy dissipation device of the existing swinging pier system is mainly installed at the lift-off interface at the bottom of the pier, and the position of the swinging interface at the bottom of the pier is more complicated and concentrated The problem is that under the action of strong earthquakes, it is easy to cause damage to the bottom of the pier

[0005] Hollow bridge piers generally require larger energy-dissipating devices, and too large energy-dissipating devices will greatly increase the probability of damage, and the space for installation and disassembly is limited

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