Building outer surface wind pressure measurement method

Abstract

The invention provides a building outer surface wind pressure measurement method. The method includes the steps that a rigid model is manufactured and pressure measurement points are set; a wind tunnel test is conducted on the rigid model in a single round, so that a point wind pressure coefficient independent peak value reserving sequence and a face average wind pressure coefficient independent peak value reserving sequence are acquired; maximum likelihood estimation is conducted on point scale parameters and point position parameters of the point wind pressure coefficient independent peak value reserving sequence and face scale parameters and face position parameters of the face average wind pressure coefficient independent peak value reserving sequence, so that the maximum design value and the minimum design value of point wind pressure coefficients and the maximum design value and the minimum design value of face average wind pressure coefficients are determined, wherein the point scale parameters, the point position parameters, the face scale parameters and the face position parameters submit to extreme value distribution; the most disadvantageous maximum design value and the most disadvantageous minimum design value of the point wind pressure coefficients and the most disadvantageous maximum design value and the most disadvantageous minimum design value of the face average wind pressure coefficients are determined; the wind pressure of the outer surface of a building is determined. The method has the advantages of being low in cost, high in safety and capable of being widely applied to the field of buildings.

Description

technical field [0001] The invention relates to measurement technology, in particular to a method for measuring wind pressure on the outer surface of a building. Background technique [0002] In actual production and life, the safety performance of various buildings is related to the safety of people's lives and properties, so the safety performance of buildings has always been the focus of people's concern. Wind pressure, which affects the safety performance of buildings, is the main load of the building envelope and its connectors. Here, the building envelope includes doors and windows, building curtain walls, roof panels, wall panels, purlins, wall beams, etc. At present, the most effective way to determine the wind pressure on the outer surface of the building envelope is the wind tunnel model test. According to the principle of similarity, the rigid model pressure test is carried out on the building structure in the boundary layer wind tunnel. According to the measured ...

AI Technical Summary

Problems solved by technology

In the implementation process of the method based on the multi-stage wind pressure coefficient time history, it is necessary to repeat multiple rounds of tests on the building model under each test wind direction angle, usually not less than 10 to 16 rounds, which has a large amount of data storage and processing time. In the implementation process of the method based on the single-segment wind pressure coefficient time history, only one round of testing is performed on the building model under each test wind direction angle, which reduces the time and storage consumption. Unable to consider the uncertainty of the extreme wind pressure coefficient, it may give a low wind pressure design value, thus endangering the safety of the building

[0003] It can be seen that in the prior art, there is still no low-cost and high-safety method for measuring the wind pressure on the outer surface of a building

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