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A wind-induced internal pressure test method for fully and nominally closed structures

A closed structure, internal pressure test technology, used in machine/structural component testing, aerodynamic testing, instrumentation, etc.

Active Publication Date: 2019-10-18
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • A wind-induced internal pressure test method for fully and nominally closed structures
  • A wind-induced internal pressure test method for fully and nominally closed structures
  • A wind-induced internal pressure test method for fully and nominally closed structures

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[0039]In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] The application principle of the present invention will be further described below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, the fully and nominally closed structure wind-induced internal pressure test method provided by the embodiment of the present invention includes the following steps:

[0042] S101, under the condition that the airtightness of the building model is absolutely good, explore the internal pressure characteristics of the fully enclosed structure through wind tunnel tests;

[0043] S102, the non-Gaussian characteristics of internal pressure were examined, and...

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Abstract

The present invention belongs to the technical field of closed structure wind-induced internal pressure, and discloses a complete and nominal closed structure wind-induced internal pressure test method. A wind tunnel test is employed to explore internal pressure features of a closed structure; non-Gaussian features of the internal pressure are checked, an average internal pressure level and a peakinternal pressure level in different homogeneous environment porosities, wind directions and relative porosities are researched in detail, internal pressure results in different homogeneous environment porosities and a wind load standard are compared and analyzed. The nominal closed structure wind-induced internal pressure follows the Gaussian distribution, the amplitude of variation of an extreme value internal pressure coefficient is similar to the amplitude of variation of a mean value, when a peak factor g is 3.5, the highest negative extremum wind pressure coefficient is -0.255 which isfar lower than a peak value internal pressure coefficient -0.326 obtained by calculation according to a standard (GB50009-2012).

Description

technical field [0001] The invention belongs to the technical field of wind-induced internal pressure of closed structures, in particular to a test method for wind-induced internal pressure of completely and nominally closed structures. Background technique [0002] Wind-induced internal pressure is an unavoidable problem in long-span spatial structures, high-rise buildings and low-rise residential buildings. Over the years, wind engineering researchers have done a lot of research work in this field, mainly focusing on single spaces with large openings in the walls. Theoretical and experimental studies on wind-induced internal pressure of structures have derived a complete internal pressure control equation after considering the background pores and roof flexibility, and verified the effectiveness and accuracy of the internal pressure control equation through wind tunnel tests. In terms of wind-induced internal pressure research on multi-space structures with openings, Saath...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/02
Inventor 余先锋谢壮宁
Owner SOUTH CHINA UNIV OF TECH