超高层建筑施工脚手架连墙件风载作用分析

Analysis on Scaffold Tie Member in Super High-Rise Building Construction under Wind Load

目的研究风荷载对扣件式钢管脚手架连墙件的影响参数和计算方法,为超高层建筑施工脚手架连墙件合理设计提供参考.方法按《建筑结构荷载规范》(GB50009-2012)的规定,结合工程实例,对超高层建筑施工脚手架风压标准值,风压随建筑物高度变化系数,风振系数等进行计算分析,选取合理的计算参数.结果得出实用、合理的风载作用体型系数计算中的挡风系数计算方法及实用的高度变化系数,给出风振系数的算法及单个连墙件水平风压标准值.结论超高层建筑施工脚手架连墙件合理设计的风振作用应根据施工情况具体分析,在依据《建筑施工扣件式脚手架安全技术规范》(JGJ130-2011)基础上增加风振系数.

In order to improve design and provide some references, influence parameters and calcu- lation method of scaffold tie member in super high-rise building under wind loads were studied. According to the code＂Load code for design of building construction＂（ GB50009 -2012 ）, com- bined with engineering, the reasonable wind pressure characteristic value, the wind shape factor, the wind vibration factor, the height exposure factor etc. were analyzed and selected. A rational calcu- lation method for wind resistance factor and wind vibration factor was proposed;applied height exposure factor and level wind pressure characteristic value were obtained. Conclusion is that the in- fluence of wind vibration on scaffold tie member in super high-rise building should be specifically analyzed according to the construction case. The wind vibration factor should be increased on the basis of the code＂ Technical code for safety of steel tubular scaffold with couplers in construction＂ （ JGJ130 - 2011 ）.