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Vortex induced vibration method of subduction tower type construction

A vortex-induced vibration and building technology, which is applied to building components, earthquake resistance, etc., to achieve the effect of reducing vortex-induced vibration

Inactive Publication Date: 2013-05-22
CHINA JILIANG UNIV
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AI Technical Summary

Problems solved by technology

The Reynolds number of buildings such as TV towers often reaches 10. 6 ~10 7 magnitude, cannot be used

Method used

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  • Vortex induced vibration method of subduction tower type construction
  • Vortex induced vibration method of subduction tower type construction
  • Vortex induced vibration method of subduction tower type construction

Examples

Experimental program
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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with specific embodiments.

[0023] Such as Figure 1-3 Shown, the tower type building is a TV tower in the present embodiment, and the upper and lower two ends of the TV tower main body 4 are provided with eight pairs of rotatable poles and eight cloth strips (strips). All are equipped with cloth strips 3 and their lifting devices. The eight support rods 2 at the upper end are arranged in a meter shape, that is, the angle between two adjacent support rods is 45 degrees, and the eight support rods 2 at the lower end are also in a meter shape. Arrangement, that is, the angle between two adjacent poles is 45 degrees, and each pair of upper and lower poles 2 is located in the same vertical plane. Each pair of upper and lower corresponding poles 2 plays the role of raising, lowering and supporting cloth strips 3 . When there is wind, select the cloth strips on one to three poles with an included angle ...

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Abstract

The invention discloses a vortex induced vibration method of a subduction tower type construction, eight pairs of rotary supporting rods and eight strips of cloth are arranged on the upper end and lower end of the tower type construction, the eight supporting rods (2) on the upper end are arranged in the shape of a Chinese character 'mi', namely included angles between adjacent two supporting rods are 45 degrees, the eight supporting rods (2) on the lower end are also arranged in a shaped of Chinese character 'mi', namely included angles between adjacent two supporting rods are 45 degrees, and each pair of two upper and lower supporting rods are located at the same vertical surface; stripes of cloth on one to three supporting rods which have a minus 45 degrees to a positive 45 degrees with a wind direction included angle are selected to lift as windy weather; at the premise of not changing structural basic shape, the vortex induced vibration method of the subduction tower type construction has the advantages of applying an easy, feasible and effective method to control and prevent a vortex from falling off, and achieving the purpose of vortex induced vibration.

Description

technical field [0001] The invention relates to the technical field of building vibration reduction, in particular to a method for reducing vortex-induced vibration of a tower-shaped building. Background technique [0002] When the fluid bypasses the non-streamlined building at a certain speed, flow separation will occur, and alternate vortex shedding will be formed on both sides of the building, causing the pressure distribution on the surface of the building to change periodically, thereby forming an alternating force acting on the building. Cause building vibration, cause fatigue damage to the building structure and physical discomfort of the resident staff. The changing frequency of the alternating force is directly proportional to the velocity of the incoming flow and inversely proportional to the lateral scale of the building. When the frequency of the alternating force is close to the natural frequency of the building, resonance will be formed, which poses a threat t...

Claims

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Application Information

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IPC IPC(8): E04B1/98
Inventor 邵传平
Owner CHINA JILIANG UNIV
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