新型索承网壳结构非线性风振反应特性及参数分析
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摘要
根据随机过程理论,考虑风压脉动及风的空间相关性,给出了具有空间相关性风场的计算机模拟方法,建立了一种适合大跨空间结构非线性风振响应计算分析的时域方法,并编制了相应的抗风设计程序.对一K8型索承网壳结构进行了非线性风振反应分析,分析表明该结构具有良好的抗风性能.通过改变几何、结构、荷载等参数,研究诸多因素对素承网壳风振反应的影响,结果表明矢跨比和撑杆长度是索承网壳抗风设计的主要控制参数.
According to the theory of random process,the wind histories generation method which can consider the time and spatial correlativity of wind is given.The nonlinear wind vibration response analysis method in the time domain is established with the relevant program complied,which is adaptable to the long span structures.The results of a K8 type cable-supported lattice shell indicate the structure has good wind-resistance performance.In addition,through changing factors such as structural parameters,geometric parameters,etc.,the rules of wind-induced vibration response are systematically studied. The results show the rise-span ratio and the lengths of bars are the main control parameters for wind-resistance design.
According to the theory of random process,the wind histories generation method which can consider the time and spatial correlativity of wind is given.The nonlinear wind vibration response analysis method in the time domain is established with the relevant program complied,which is adaptable to the long span structures.The results of a K8 type cable-supported lattice shell indicate the structure has good wind-resistance performance.In addition,through changing factors such as structural parameters,geometric parameters,etc.,the rules of wind-induced vibration response are systematically studied. The results show the rise-span ratio and the lengths of bars are the main control parameters for wind-resistance design.
引文
[1]李永梅,张毅刚.新型索承网壳结构静力、稳定性分析[J].空间结构,2003,9(1):25-30.LI Yong-mei,ZHANG Yi-gang.Stability and static a-nalysis of cable-supported lattice shells[J].SpatialStructure,2003,9(1):25-30.
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[4]李元齐,董石麟.大跨度网壳结构抗风研究现状[J].工业建筑,2001,31(5):50-53.LI Yuan-qi,DONG Shi-lin.Wind resistant research oflarge span reticulated shell structures[J].IndustrialConstruction,2001,31(5):50-53.
[5]SHINOZUKA M,JAN C M.Digital simulation of ran-domprocesses and its application[J].Journal of Sound&Vibration,1972,25(1):111-128.
[6]李永梅.新型索承网壳结构体系理论和试验研究[D].北京:北京交通大学,2004.LI Yong-mei.Theoretical analysis and experi ment studyof cable-supported Lattice shell structures[D].Beijing:Beijing Jiaotong University,2004.
[7]李永梅,张毅刚.索承网壳结构截面与预应力优化设计研究[J].建筑结构,2007,37(2):40~43.LI Yong-mei,ZHANG Yi-gang.Opti mal design of ca-ble-supported lattice shells on section sizes and cableforces[J].Building Structure,2007,37(2):40-43.
[8]李永梅,张毅刚.凯威特型索承网壳结构的自振特性及参数分析[J].世界地震工程,2007,23(1):91-97.LI Yong-mei,ZHANG Yi-gang.Dynamic characteris-tics and parametric analysis of Kiewitt cable supportedlattice shells[J].World Earthquake Engineering,2007,23(1):91-97.
[9]李永梅,郑志英,张毅刚.新型索承网壳结构非线性地震反应特性和参数分析[J].地震工程与工程振动,2006,26(6):93-100.LI Yong-mei,ZHEN Zhi-ying,ZHANG Yi-gang.Non-linear seismic response characteristic and parametric a-nalysis of cable-supported lattice shell structuress[J].Earthquake Engineering and Engineering Vibration,2006,26(6):93-100.
[2]张相庭.工程结构风荷载理论和抗风计算手册[M].上海:同济大学出版社,1990.
[3]赵臣,沈世钊.双曲抛物面鞍形索网风振反应分析[J].哈尔滨建筑工程学院学报,1990(2),23(2):25-30.ZHAO Chen,SHEN Shi-zhao.Response analysis of HP-shaped cable roofs to the fluctuating wind action[J].Journal of Harbin Architecture&Civil Engineering In-stitute,1990,23(2):73-79.
[4]李元齐,董石麟.大跨度网壳结构抗风研究现状[J].工业建筑,2001,31(5):50-53.LI Yuan-qi,DONG Shi-lin.Wind resistant research oflarge span reticulated shell structures[J].IndustrialConstruction,2001,31(5):50-53.
[5]SHINOZUKA M,JAN C M.Digital simulation of ran-domprocesses and its application[J].Journal of Sound&Vibration,1972,25(1):111-128.
[6]李永梅.新型索承网壳结构体系理论和试验研究[D].北京:北京交通大学,2004.LI Yong-mei.Theoretical analysis and experi ment studyof cable-supported Lattice shell structures[D].Beijing:Beijing Jiaotong University,2004.
[7]李永梅,张毅刚.索承网壳结构截面与预应力优化设计研究[J].建筑结构,2007,37(2):40~43.LI Yong-mei,ZHANG Yi-gang.Opti mal design of ca-ble-supported lattice shells on section sizes and cableforces[J].Building Structure,2007,37(2):40-43.
[8]李永梅,张毅刚.凯威特型索承网壳结构的自振特性及参数分析[J].世界地震工程,2007,23(1):91-97.LI Yong-mei,ZHANG Yi-gang.Dynamic characteris-tics and parametric analysis of Kiewitt cable supportedlattice shells[J].World Earthquake Engineering,2007,23(1):91-97.
[9]李永梅,郑志英,张毅刚.新型索承网壳结构非线性地震反应特性和参数分析[J].地震工程与工程振动,2006,26(6):93-100.LI Yong-mei,ZHEN Zhi-ying,ZHANG Yi-gang.Non-linear seismic response characteristic and parametric a-nalysis of cable-supported lattice shell structuress[J].Earthquake Engineering and Engineering Vibration,2006,26(6):93-100.
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