Self-resetting efficiency-enhanced seismic isolation column and its underground space structure system

Abstract

A self-resetting synergistic seismic isolation column and its underground space structure system include a self-resetting synergistic seismic isolation column unit, an underground space structure roof, an underground space structure bottom plate and an underground space structure side wall. The present invention establishes a dual toughness mechanism for anti-seismic and anti-shock effects of the underground space structure, uses the prestressed steel bar of the center column as the first ductile self-resetting mechanism, and utilizes the swing motion of the self-resetting and synergistic shock-isolation column under external action to isolate earthquakes and shocks The effect is to amplify the deformation of the friction damper on the top of the self-resetting and synergistic isolation column to improve the energy dissipation capacity; the self-resetting friction damper on the top of the center column is used as the second ductile self-resetting mechanism to ensure the self-resetting performance of the structure under multi-level earthquakes. The self-resetting mechanism reduces the residual deformation of the structural system and realizes the rapid recovery and use of the underground space structure after the disaster; the double self-resetting mechanism realizes the amplified energy consumption of the center column of the seismic isolation, which can effectively absorb and dissipate the impact energy, and has multiple energy consumption and high efficiency and strong robustness.

Description

technical field [0001] The invention belongs to the field of underground construction engineering and protection engineering, and particularly relates to a self-reset and synergistic seismic isolation column and its underground space structure system. Background technique [0002] In recent years, with the continuous acceleration of my country's urbanization process, underground space structures have been built on a large scale in major cities in my country. The vigorous development of underground space structure, increasing the degree of urban intensification and reducing urban environmental pollution, has huge social and economic benefits; but it also brings new challenges to urban engineering earthquake prevention and disaster mitigation. The underground space structure is often an important part of lifeline projects, carrying a large number of people and logistics. Once damaged in an earthquake or explosion, it will lead to huge casualties and economic losses, and will b...

AI Technical Summary

Problems solved by technology

The vigorous development of underground space structure, which improves the degree of urban intensification and reduces urban environmental pollution, has huge social and economic benefits; but it also brings new challenges to the work of earthquake prevention and disaster reduction in urban engineering

The underground space structure is often an important part of the lifeline project, carrying a large number of people and goods. Once it is damaged in an earthquake or explosion, it will cause huge casualties and economic losses, and bring great losses to the earthquake emergency rescue and post-disaster recovery work. come with great difficulty

[0003] In the past, due to the lack of underground spatial structures and insufficient earthquake damage data, people generally believed that the seismic capacity of underground spatial structures was relatively good and there were few studies. When it happened, the existing underground space structure was not as safe as people imagined, and even caused serious damage caused by collapse; in addition, with the complexity of the global security situation, there were also many underground space explosion cases around the world, causing Numerous casualties and severe structural damage

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