Multi-disaster-resistant vibration reduction design method suitable for super high-rise building antenna structure

Abstract

The invention belongs to the field of structural vibration and control in civil engineering discipline, and relates to a multi-disaster-resistant vibration reduction design method suitable for a super high-rise building antenna structure, which comprises the following steps: establishing a super high-rise building finite element analysis model comprising the antenna structure, and selecting and simulating a seismic wave and coherent wind load time history suitable for a target structure; disconnecting the joint of the main body structure and the antenna structure of the super high-rise building, arranging a shock insulation rubber support, and determining support parameters through finite element analysis under the action of earthquakes and wind loads; thirdly, disconnecting the joint of the antenna and the top layer of the main body structure, connecting the antenna structure with the main body structure by adopting a displacement type damper, and determining the rigidity of the damper through anti-seismic and wind-resistant finite element calculation; performing finite element analysis of the whole structure according to the shear stiffness of the selected shock insulation support and the stiffness of the displacement type damper, calculating the vibration reduction effect of the antenna structure under the action of frequent earthquakes, rare earthquakes and wind loads in different return periods, and checking whether the shear displacement of the support is smaller than the limit value requirement or not.

Description

technical field [0001] The invention belongs to the field of structural vibration and control of the civil engineering discipline, and proposes an anti-multiple-disaster vibration-reduction design method suitable for an antenna structure of a super high-rise building. Background technique [0002] Super high-rise buildings (such as landmark skyscrapers, TV towers, etc.) symbolize a country's infrastructure construction capabilities, and its functions of signal transmission, tourism, catering, entertainment, and office accommodation can greatly promote economic development. . In order to meet the needs of building appearance design and communication, taller antennas are usually installed on the top of high-rise buildings; although the antenna is an auxiliary structure, if it is damaged, it will directly affect signal transmission and communication functions, and indirectly cause other components of super high-rise buildings to break down. damage, and ultimately seriously aff...

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Problems solved by technology

[0004] The traditional super high-rise building antenna structure is fixed to the main structure, which is the root cause of the whiplash effect and large vibration of the antenna structure

Up to now, many scholars at home and abroad have studied the mechanism of the whiplash effect of the antenna structure of super high-rise buildings, but there are very few related studies on its vibration control under the action of earthquakes and strong winds.

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