Friction-lasso composite energy-dissipative fabricated steel beam-column system capable of multi-stage vibration reduction

Abstract

The invention discloses a friction-lasso composite energy-consumption type assembly style steel beam column system capable of vibrating multi-levelly. The composite energy-consumption type assembly style steel beam column system can be prefabricated and assembled quickly on the spot; the occupied space is small. In the case of many earthquakes or wind vibrations, a limiting type friction energy-consumption device in the system can locally strengthen a plastic hinge area of a steel beam, the energy of the structure is dissipated through the friction and a small-titled trans-lasso energy-consumption device provides anti-lateral stiffness for the structure; when rare earthquakes occur, the limiting type friction energy-consumption device locally strengthen the plastic hinge area and limit sliding at the same moment. The small-titled trans-lasso energy-consumption device in the system makes a damper fully consume energy by amplifying the horizontal displacement. The system achieves multi-level control energy consumption and the energy consumption mechanism is clear, and has strong energy consumption capacity; the system can reduce the main injury and damage of the steel structure, and can be applied to steel structure buildings where the installed position of the energy-consumption device is limited and the requirement to the using space is high.

Description

technical field [0001] The invention relates to a friction-lasso composite energy-consuming assembled steel beam-column system capable of multi-stage vibration reduction, and belongs to the technical field of vibration reduction control and assembled structures of structural engineering. Background technique [0002] In recent years, with the improvement of our country's science and technology, the rapid growth of the economy, and the further enhancement of the comprehensive national strength, the steel output has leapt to the forefront of the world's major countries. Steel, under the guidance of this policy, a large number of steel structure buildings have emerged in economically developed regions. Due to the advantages of light weight, diverse structural forms, wide application range and environmental protection, multi-high-rise steel structures have been developed rapidly, solving the problems of scarcity of building land and environmental protection. At the same time, i...

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Problems solved by technology

The existing energy-dissipating components also have deficiencies. The viscous damper has a good energy-dissipating effect, but it provides a small lateral stiffness for the structure; the metal damper can provide a large lateral stiffness for the structure, but in frequent earthquakes Or wind vibration often cannot fully dissipate energy, and the vibration damping effect is poor; researchers also use different connection methods to improve the damping effect of energy-dissipating parts on the structure, commonly used are diagonal connection, horizontal connection, elbow connection and scissors The above connection method does improve the shock absorption effect, but it takes up a lot of space and has certain limitations in the layout position, which has a certain impact on the building space and the appearance of the building.

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