A driving wind tunnel test system for simulating the actual vibration form of structures

Abstract

The invention provides a driving wind tunnel test system for simulating the actual vibration form of a structure, which includes a numerical control circuit component, a driving vibration component and a multi-degree-of-freedom structural component. The numerical control circuit assembly includes a circuit controller and a motor driver. The motor driver receives instructions from the controller and controls the rotation of the servo motor in the driving vibration assembly. The driving vibration assembly is connected to the numerical control circuit, and the driving vibration assembly includes a servo motor. A motor and a three-way bottom plate, the servo motor drives the three-way bottom plate assembly to vibrate in X, Y, and Z directions. The lower part of the three-way bottom plate is connected with the multi-degree-of-freedom structural component, and drives it to vibrate in three degrees of freedom. The wind tunnel test system realizes structural three-way vibration with adjustable amplitude, frequency and phase, and successfully simulates the more realistic nonlinear vibration form under the driving device, which improves the simulation accuracy and ensures the test results, which can be better Important mechanical data such as wind pressure and torsional force of the test building structure.

Description

Technical field [0001] The present invention relates to the field of wind tunnel testing technology, in particular, a driving wind tunnel test system that simulates the actual vibration form of the structure, which can be used to test the mechanical data such as fluid wind pressure and torsional force of the building structure. Background [0002] With the development of economic construction, population expansion and shortage of land resources, more and more high-rise buildings have risen from the ground. Tall buildings have the structural characteristics of lightweight, low frequency and small damping, and wind loads are often the controlling loads for such structural designs. Wind-induced structural vibration and glass curtain wall destruction accidents occur frequently, so the accurate grasp of the wind-induced effect of high-rise buildings is the key point, and the most effective method at present is to analyze the characteristics of the structural wind response through wind...

AI Technical Summary

Problems solved by technology

[0006] The current vibration models place the vibration device at the bottom of the wind tunnel. There are many such devices, but the common point is that the vibration source at the bottom drives the rigid model to vibrate in the X or Y axis. The biggest problem is the simulated structural vibration. All are linear, and the simulated buildings cannot bend and vibrate

Moreover, the existing torsional vibration simulates that the top and bottom of the building are twisted at an angle at the same time, which is also inconsistent with the reality, because the foundation connected to the ground of the actual building will not be displaced after being affected by the wind

At present, there is no simulation device and system that can realize the simulation of the actual structural mode shape.

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