Water tank damper for controlling buffeting response in bridge construction period

Abstract

The invention provides a water tank damper for controlling buffeting response in the bridge construction period, the partition plates and the partition plate positioners are additionally arranged in atraditional water tank damper, the water depth does not need to be changed, and the partition plate positioners can be used for conveniently and rapidly adjusting the different intervals of the multiple partition plates to achieve adjustment of multiple target frequencies of water body vibration; therefore, the purpose of controlling the buffeting of various frequency components is achieved. Thewater tank damper has the advantages that only one water tank is needed, the water depth does not need to be changed, the target frequency of the water body can be quickly adjusted only by adjusting the distance between the partition plates through the partition plate positioner, operation is more convenient, and efficiency is higher; multiple target frequencies can be realized at the same time byonly one water tank and a plurality of partition plates, so that the targets which can be realized by several different water tanks in the traditional method are finished, the cost is lower, and thepracticability is higher; the partition plate can adopt a rigid corrugated windproof net and is high in rigidity, light in weight and low in price, and the vibration control effect is superior to thatof a flat plate; the water depth adjusting frequency does not need to be adjusted repeatedly like a traditional water tank, workloads are reduced, the construction period is shortened, and cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of bridge structure wind-induced vibration control research, and relates to a water tank damper device that adjusts the frequency of a control system in time according to the vibration frequency change of a bridge structure to maximize control efficiency. Background technique [0002] Long-span bridges (cable-stayed bridges and suspension bridges) are subject to fewer constraints during the cantilever construction phase, and their structural stiffness and damping are relatively small, and they are more sensitive to wind loads, so they are prone to large wind-induced buffeting responses. Excessive buffeting will inevitably have adverse effects on construction, and may even damage construction machinery and equipment, endanger the safety of construction personnel, and may also cause local bridge fatigue problems. Therefore, it is necessary to control the wind-induced buffeting response of long-span bridge stru...

AI Technical Summary

Problems solved by technology

Correspondingly, multiple water tanks are required, which undoubtedly increases the construction cost and inconvenience

Aiming at the deficiencies of traditional water transfer tank dampers in controlling buffeting during bridge construction, a water body vibration frequency can be adjusted conveniently and quickly to adapt to the dynamic change of time-varying structural frequency, and multiple water body vibration frequencies can be realized simultaneously with only one water tank Targeted tank dampers, with their relative strengths and features

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