台风季节珠海机场围护结构施工顺序研究

RESEARCH ON THE CONSTRUCTION SEQUENCE OF ZHUHAI AIRPORT ENVELOPE STRUCTURE OVER THE PERIOD OF TYPHOON SEASON

结构围护系统是非常容易受到台风破坏的部位。台风过境时大量建筑正处于建设过程中,结构设计对围护结构施工过程中各工况的抗风设计考虑较少。而施工过程中未完工的围护结构其风效应特征与完整围护结构的风效应特征存在显著差别。基于珠海机场项目自身特征及风洞试验结果,在围护结构施工前,优化了围护结构施工顺序,减少了台风对施工过程中围护结构的破坏,达到了减轻风险的效果。

The structural envelope system is the most vulnerable to typhoon damage.When the typhoon appears,a great number of constructions are in the construction process,but the structural design has less consideration for the wind resistance design of each working condition during the construction of the enclosure structure.However,there might be obvious differences between the wind effect characteristics of the unfinished envelope structure and the wind effect characteristics of the finished envelope structure during the construction process.Based on the characteristics of the Zhuhai Airport project and the results of the wind tunnel test,this paper optimizes the construction sequence of the enclosure structure before the construction of the enclosure structure,reduces the damage of the typhoon to the enclosure structure during the construction process,and achieves the effect of risk reduction.