建筑结构风致内压的研究进展

Research Progress of Windinduced Internal Pressure in Structures

摘要:

从理论分析方面概括了内压控制方程的发展过程,评述了结构柔度、Helmholtz共振、干扰效应及结构内部分区等几个影响风致内压的主要因素,并从风洞试验、现场实测与CFD(计算流体动力学)模拟3个方面回顾与总结了国内外风致内压的研究进展,列举了各国风荷载规范对内压的描述.通过分析内压控制方程、影响因素以及研究方法中所存在的问题,指出了当前内压研究中的不足,并提出了进一步研究的建议.

Abstract:

The study progress of internal pressure governing equation is first summarized from theoretical analysis.Then several main factors that affect windinduced internal pressure including building flexibility,Helmholtz resonant effect,interferer effect and internal partitioning are reviewed,and a comprehensive survey is presented from the aspects of wind tunnel test,field measurement and computational fluid dynamics (CFD) numerical simulation.Description of internal pressure in wind load codes of several main countries is presented too.Finally some limitations in current researches are pointed out by analyzing the problems existed in internal pressure governing equations,influencing factors and research methods,and some recommendations are made for further researches on internal pressure.