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Big-span roof and super high-rise building structure wind vibration response detecting and computing method

A technology of building structure and wind vibration response, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., which can solve the problems of low calculation efficiency, large memory space, and large calculation load, and achieve the effect of saving occupancy

Inactive Publication Date: 2006-10-25
SHANTOU UNIV
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Problems solved by technology

However, since large-scale engineering structures have a very large degree of freedom, the direct use of the CQC method has the problems of large calculation and huge memory space, which affects its engineering adaptability. It is especially obvious in the wind vibration response of random excitation, which ultimately leads to low calculation efficiency, long data analysis and calculation time, and once the structural parameters are adjusted, the calculation will take the same calculation time, which is often difficult to meet the needs of structural design

Method used

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  • Big-span roof and super high-rise building structure wind vibration response detecting and computing method
  • Big-span roof and super high-rise building structure wind vibration response detecting and computing method
  • Big-span roof and super high-rise building structure wind vibration response detecting and computing method

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Embodiment Construction

[0033] Using multi-point synchronous pressure measurement equipment to measure the wind pressure signal on the surface of the structure to obtain the excitation time history acting on the building, directly calculate the modal coordinates and the Fourier transform of the node displacement response by the Fourier transform of the excitation truncated function, and then calculate the modal The power spectral density function of the response and the displacement response of the main nodes, and thus the covariance of the modal coordinate response and the displacement response of the nodes for the equivalent static wind load calculation. Algorithm flow chart of the present invention sees figure 1 .

[0034] Practical application results:

[0035] figure 2 In order to compare the maximum dynamic displacement of a super high-rise building under different winds calculated by this method and CQC, it can be seen that the calculation results of this method and CQC method are consisten...

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Abstract

The invention relates to testing method used in wide span house cover and super tall building structure wind induced oscillation response. The feature is that it directly adopts the mold analyzing method to use the response of physical coordination and mode coordination under the random air driving bearing final function. The calculating result has the same accuracy as the method of CQC. But the calculating speed is much faster than CQC method, and the request for memory is also lowered. It is especially suited for realizing on middle class PC.

Description

Technical field: [0001] The invention relates to the field of structural wind resistance analysis of long-span roofs and super high-rise building structures, in particular to wind tunnel synchronous wind pressure measurement of building models and calculation of wind-induced vibration responses of such structures and equivalent static wind loads of structures. Background technique: [0002] Long-span roofs and super high-rise building structures are subjected to smooth random wind loads, and the response at any position can be calculated theoretically. Before the present invention, the precise method adopted was the complete quadratic combination ( CQC) method, accurate calculation of structural wind-induced response analysis is the key to further calculation of equivalent static wind load that can be used for structural design. However, since large-scale engineering structures have a very large degree of freedom, the direct use of the CQC method has the problems of large ca...

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Application Information

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IPC IPC(8): G01M9/06G01M9/00G01M9/02
Inventor 谢壮宁
Owner SHANTOU UNIV
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