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| Extreme value of wind-induced transient internal pressure of buildings suffering sudden opening |
| YU Xianfeng1,DUAN Min2,XIE Zhuangning1 |
1.State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China;
2.School of Civil Engineering,City College of Science and Technology,Chongqing University,Chongqing 402167,China |
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Abstract Peak values of wind-induced transient internal pressure response were studied in detail when a structure’s doors/windows suddenly were broken based on the classical governing equation of internal pressure.The effects of opening time on the peak transient internal pressure were analyzed.The estimated method for extreme value of transient internal pressure of buildings suffering sudden opening was presented,it was compared with the accurate calculation method.The results showed that the larger the external pressure when a building’s doors/windows suddenly open,the larger the peak value of the transient internal pressure; however,there is a time lag between the maximum external pressure and the peak transient internal pressure; an amplification factor (G=1.17) can be used to describe the ratio of the extreme value of transient internal pressure to the peak internal pressure response when the external pressure reaches its maximum value; the presented method can be effectively used to estimate the extreme value of transient internal pressure of a building suffering sudden opening.
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Received: 09 December 2015
Published: 25 April 2017
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