基于不同屋顶方案的轻钢结构抗风性能
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摘要
为有效增加沿海地区开阔地带厂区轻钢结构的稳定、强度及经济性,针对常用的双坡屋顶及单坡屋顶轻钢结构,运用Midas/Gen、SAP2000与PKPM-STS这3种结构软件中相应模块的有限元分析方法,给出了不同屋顶形式下结构节点及杆件内力、抗风性能等参数分析结果.结果表明:在常用的轻钢结构屋面结构形式中,双坡屋顶抗风性能与单坡屋顶抗风性能在独立分析时前者优于后者;结构整体分析时需要考虑维护系统的参与作用.
In order to effectively increase the stability,strength and economical efficiency of light steel structures in the factories in the open area of coastal areas and aiming at the commonly used double-slope roof and single-slope roof light steel structures,the analysis results of such parameters as structure nodes,rod internal force and wind resistance under different roof forms were given with the finite element analysis method of the corresponding modules in three structural software of Midas/Gen,SAP2000 and PKPM-STS.The results showthat among the commonly used light steel structure roof structures,the wind resistance of the double-slope roof is better than that of single-slope roof in the independent analysis, while the participation role of maintenance system should be considered in the overall structure analysis.
In order to effectively increase the stability,strength and economical efficiency of light steel structures in the factories in the open area of coastal areas and aiming at the commonly used double-slope roof and single-slope roof light steel structures,the analysis results of such parameters as structure nodes,rod internal force and wind resistance under different roof forms were given with the finite element analysis method of the corresponding modules in three structural software of Midas/Gen,SAP2000 and PKPM-STS.The results showthat among the commonly used light steel structure roof structures,the wind resistance of the double-slope roof is better than that of single-slope roof in the independent analysis, while the participation role of maintenance system should be considered in the overall structure analysis.
引文
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[3]赵明伟,顾明.轻型钢结构风灾易损性概率分析[J].中南大学学报(自然科学版),2012,43(9):3609-3618.(ZHAO Ming-wei,GU Ming.Probabilistic wind vulnerability analysis of light-w eight steel buildings[J].Journal of Central South University(Science and Technology),2012,43(9):3609-3618.)
[4]龚盈.轻型门式刚架抗风性能和极限承载力分析[D].杭州:浙江大学,2011.(GONG Ying.Analysis of wind resistant behavior and ultimate load carrying capacity of light-w eight steel structures[D].Hangzhou:Zhejiang University,2011.)
[5]European Committee for Standardization.EN 1993-1-1Eurocode 3:design of steel structures[S].London:European Committee for Standardization,2005.
[6]中华人民共和国建设部.GB50009-2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.(The Ministry of Construction of the People’s Republic of China.GB50009-2012 The load code for the design of building structures[S].Beijing:China Architecture&Building Press,2012.)
[7]中华人民共和国建设部.GB51022-2015门式刚架轻型房屋钢结构技术规范[S].北京:中国建筑工业出版社,2015.(The Ministry of Construction of the People’s Republic of China.GB51022-2015 Technical code for steel structure of light-w eight building w ith gabled frames[S].Beijing:China Architecture&Building Press,2015.)
[8]中华人民共和国建设部.GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.(The Ministry of Construction of the People’s Republic of China.GB50011-2010 The code for seismic design of building[S].Beijing:China Architecture&Building Press,2010.)
[9]袁波,曾明会,李霞昭.钢筋混凝土框架结构中次梁的抗连续倒塌性能分析[J].沈阳建筑大学学报(自然科学版),2014,30(1):41-48.(YUAN Bo,ZENG Ming-hui,LI Xia-zhao.Performance analysis of anti-progressive collapse of secondary beam in reinforced concrete frame structures[J].Journal of Shenyang Jianzhu University(Natural Science),2014,30(1):41-48.)
[10]Holmes J D.Mean and fluctuating internal pressuresby w ind[C]//Proceedings of Fifth International Conference on Wind Engineering.Colorado,USA,1997.
[11]郑健.封闭式多跨双坡轻钢结构屋面抗风研究[D].昆明:昆明理工大学,2013.(ZHENG Jian.Wind-resistant research of closed type multi-span double slope roof of steel structure[D].Kunming:Kunming University of Science&Technology,2013.)