高层结构风振性能水准的二级模糊综合评价研究
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摘要
针对风振作用下高层结构的性能状态,引入模糊综合评价理论,研究高层结构风振性能水准的评价因子,给出上部结构、外部环境和地基与基础三类评价因子划分的等级标准。建立高层结构风振性能水准预测的层次评价体系,提出高层结构风振性能水准的二级模糊综合评价模型,并基于Matlab语言编制了结构风振性能模糊概率预测的计算程序。将所提模糊综合评价模型用于广州某四个高层结构风振性能水准的预测评价中,计算结果表明模糊综合评价模型可充分考虑影响结构风振性能水准的各种不确定信息,能根据权重系数的大小对所有评价因子的影响均衡兼顾,进而实现对高层结构的风振性能状态进行很好的预测;二级模糊综合评价模型能更加合理地考虑各评价因子的权重系数,计算结果优于一级模糊综合评价。研究结果可为工程结构抗风设计和加固改造提供参考指导。
The fuzzy comprehensive evaluation theory was introduced here to predict performance level of high-rise buildings in wind-induced vibration.A series of evaluation factors,such as,top peak acceleration and story drift,were studied in detail and divided into three categories of main structure,outer environment and foundation.To fully reflect the influence of the factors on the performance level,a multi-level evaluation system was established firstly and then a fuzzy comprehensive evaluation model was proposed to predict the performance level of high-rise buildings with wind excitation.Based on the proposed model,the performance level of four high-rise buildings built in Guangzhou city were predicted and calculated with Matlab program.Results showed that influences of all of the evaluation factors can be well considered and the corresponding weight coefficient of each factor can be calculated reasonably with an analytic hierarchy process,they then realize the prediction of the performance level of the four buildings and the reliable prediction results are obtained;the results of the proposed two-level fuzzy comprehensive evaluation are more superior than that of a single fuzzy comprehensive evaluation,especially for some engineering cases with many evaluation factors existing.The results of this study provided a guide and a reference for structural wind-resistant designs or reinforcing engineering designs.
The fuzzy comprehensive evaluation theory was introduced here to predict performance level of high-rise buildings in wind-induced vibration.A series of evaluation factors,such as,top peak acceleration and story drift,were studied in detail and divided into three categories of main structure,outer environment and foundation.To fully reflect the influence of the factors on the performance level,a multi-level evaluation system was established firstly and then a fuzzy comprehensive evaluation model was proposed to predict the performance level of high-rise buildings with wind excitation.Based on the proposed model,the performance level of four high-rise buildings built in Guangzhou city were predicted and calculated with Matlab program.Results showed that influences of all of the evaluation factors can be well considered and the corresponding weight coefficient of each factor can be calculated reasonably with an analytic hierarchy process,they then realize the prediction of the performance level of the four buildings and the reliable prediction results are obtained;the results of the proposed two-level fuzzy comprehensive evaluation are more superior than that of a single fuzzy comprehensive evaluation,especially for some engineering cases with many evaluation factors existing.The results of this study provided a guide and a reference for structural wind-resistant designs or reinforcing engineering designs.
引文
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[2]叶浩,钱家忠,黄夕川,等.投影寻踪模型在地下水水质评价中的应用[J].水文地质工程地质,2005,32(5):9-12.YE Hao,QIAN Jia-zhong,HUANG Xi-chuan,etc.Application of projection pursuit model to evaluation of groundwater quality[J].Hydrogeology&Engine-ering Geology,2005,32(5):9-12.
[3]汤洁,李艳梅,卞建民,等.物元可拓法在地下水水质评价中的应用[J].水文地质工程地质,2005,32(5):1-4.TANG Jie,LI Yan-mei,BIAN Jian-min,et al.Application of matter-element and extension to groundwater quality evaluation[J].Hydrogeology&Engine-ering Geology,2005,32(5):1-4.
[4]盛继亮.地下工程围岩稳定性模糊综合评价模型研究[J].岩石力学与工程学报,2003,22(1):2418-2421.SHENG Ji-liang.Research on fuzzy synthetic evaluation model for the stability of surrounding rocks of underground project[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(1):2418-2421.
[5]冯启民,孙峥,颜锋,等.城市社区抗震能力模糊综合评价模型[J].世界地震工程,2007,23(1):1-5.FENG Qi-ming,SUN Zheng,YAN Feng,et al.Model of fuzzy synthetic evaluation on seismic resistance capacity of urban communities[J].World Earthquake Engineering,2007,23(1):1-5.
[6]徐坤,杨更社.模糊综合评判在土体冻胀灾害预测中的应用[J].岩石力学与工程学报,2004,23(1):4339-4342.XU Kun,YANG Geng-she.Application of comptrehensive fuzzy evaluation model in frost heaving forcast[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(1):4339-4342.
[7]刘浩学,杨俊儒.危险货物运输路线模糊综合评价模型[J].交通运输工程学报,2006,6(2):80-82.LIU Hao-xue,YANG Jun-ru.Fuzzy synthetic evaluation model of transportation routes of dangerous goods[J].Journal of Traffic and Transportation Engineering,2006,6(2):80-82.
[8]张跃,邹寿平,宿芬.模糊数学方法及其应用[M].北京:煤炭工业出版社,1992.
[9]建筑抗震设计规范(GB50011-2010)[S].北京:中国建筑工业出版社,2010.
[10]高层民用建筑钢结构技术规程(JGJ99-98)[S].北京:中国建筑工业出版社,1998.
[11]高层建筑混凝土结构技术规程(JGJ3-2010)[S].北京:中国建筑工业出版社,2010.
[12]民用建筑可靠性鉴定标准(GB50292-1999)[S].北京:中国建筑工业出版社,1999.
[13]SEAOC,Vision2000.Performance based seismic engineering of buildings,I-II:Conceptual framework[R].Structural Engineers Association of California,Sacramento,1995.
[14]BSSC.NEHRP Recommended provisions for seismic regulation of new buildings and other structures[R].Report No:FEMA302,Washington,D.C.,1998.
[15]FEMA368.NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures[R].Federal Emergency Management Agency,Washington,D.C.,2000.
[16]FEMA355.State of the art report on connection performance[R].Federal Emergency Management Agency,Washington,D.C.,2000.
[17]周云,汪大洋,陈小兵,等.基于性能的结构抗风设计理论框架[J].防灾减灾工程学报,2009,29(3):244-251.ZHOU Yun,WANG Da-yang,CHEN Xiao-bing.et al.Framework on performance-based wind-resistant design theory[J].Journal of Disater Prevention and Mitigation Engineering,2009,29(3):244-251.
[18]建筑地基基础设计规范(GB50007-2002)[S].北京:中国建筑工业出版社,2002.
[19]陈守煜.系统模糊决策理论与应用[M].大连:大连理工大学出版社,1994.
[20]汪大洋.高层结构基于性能的抗风设计与风振控制研究[D].广州:广州大学,2011.
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