Wind-induced vibration implementation method for connected tower and multiple tuned liquid dampers

Abstract

The invention discloses a wind-induced vibration realization method for a connected tower and a plurality of tuned liquid dampers, and the method comprises the following steps: S1, carrying out the simulation of an atmospheric boundary layer flow field, and obtaining the wind load time history of the connected tower through a wind tunnel test; s2, establishing a motion equation of the connected tower; s3, calculating the frequency and damping ratio when each TLD achieves the optimal control effect according to the dynamic characteristics of the connected tower, and designing the size and water storage height of the TLD; s4, determining a scheme of an internal damping component by comparing the damping ratio of the TLD numerical model with the optimal damping ratio; s5, establishing a plurality of TLD synchronous vibration numerical models; s6, establishing a coupling motion equation of the connected tower under the control of the TLD; and S7, calculating wind-induced vibration responses of the connected tower and the plurality of TLD systems under the action of wind loads in different return periods according to the coupled motion equation. The method is not limited to the calculation of the vibration of a single tower and a single TLD, but can calculate the coupled wind-induced vibration of a connected multi-tower structure and a plurality of TLDs.

Description

technical field [0001] The invention belongs to the technical field of structural vibration control, and in particular relates to a wind-induced vibration realization method of a conjoined tower and a plurality of tuned liquid dampers. Background technique [0002] With the development of cities and technological progress, the forms of super high-rise building structures have become increasingly diversified, and large-scale conjoined multi-tower structures have emerged one after another. Because the shape of the conjoined tower is changeable and there is often aerodynamic interference between the structures, the wind effect of this type of super tall building has become one of the main factors controlling its safety and comfort. [0003] Tuned liquid dampers (TLDs) are a very effective passive dynamic damper in high-rise building wind vibration control, which can significantly reduce the top-of-structure acceleration and improve occupant comfort. The basic principle of TLD ...

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Problems solved by technology

[0004] For the above methods, method 1) equates TLD to TMD to simplify the nonlinear liquid sloshing problem, but this approach may cause large errors for complex TLDs with irregular shapes or damping components

Method 2) can only consider the vibration of the basic single building structure and a single TLD. However, the conjoined towers are interrelated. Separate analysis of the towers cannot fully and accurately reflect their dynamic characteristics, resulting in distortion of the calculation results.

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