钢框架预应力支撑结构拉索初始预拉力设计方法
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
为了研究钢框架预应力支撑结构体系中拉索初始预拉力的取值方法,从理论上对钢框架预应力支撑结构体系进行分析,推导出预应力框架支撑结构体系拉索初始预拉力的取值公式,得到预应力拉索初始预拉力与结构层间位移角之间的关系.采用反弯点法,推导出预应力框架支撑结构体系的抗侧刚度计算公式,得到预应力框架支撑结构体系的抗侧刚度与构件的材料属性、截面属性、预应力拉索与水平面的倾角有关,与拉索的初始预拉力无关.基于推导出的预应力拉索初始预拉力和层间位移角的关系公式,提出一种预应力拉索初始预拉力的设计方法,通过算例验证了提出的预应力拉索初始预拉力设计方法的可行性,保证结构体系在设计的外荷载作用下,卸载索不退出工作,而增载索的安全储备提高了30%左右.
To study the design method of initial tension of cables in prestress-braced steel frame structure system,this structure system was theoretically analyzed. Formula of initial tension of cables in prestressbraced steel frame structure system was derived,it was obtained the relation of initial tension of cables and story drift angle. Based on inflexion point method,it was derived that formula of lateral stiffness of prestress-braced steel frame structure,lateral stiffness of the structure is related to material properties,section properties and angles between cables and horizontal plane. Based on the formulas derived in this paper,a design method of initial tension of cables in prestress-braced steel frame structure was proposed.Practicability of this method is proved through an example,this method can make sure the tension of cables is more than zero under designed exterior loads,and emergency capacity of cables is improved by30%.
引文
[1]BOSCO M,ROSSI P P.Seismic behaviour of eccentrically braced frames[J].Engineering Structures,2009,31:664-674.
    [2]YI^GITSOY G,TOPKAYA C,OKAZAKI T.Stability of beams in steel eccentrically braced frames[J].Journal of Constructional Steel Research,2014,96:14-25.
    [3]连尉安,张耀春.钢支撑及框架-中心支撑双重抗侧力体系研究现状、不足及改进[J].地震工程与工程振动,2005,25(3):67-75.LIAN Wei-an,ZHANG Yao-chun.Present research,problems and improvements on steel braces and dual systems of concentrically braced frames[J].Earthquake Engineering and Engineering Vibration,2005,25(3):67-75.(in Chinese)
    [4]石永久,熊俊,王元清,等.多层钢框架偏心支撑的抗震性能试验研究[J].建筑结构学报,2010,31(2):29-34.SHI Yong-jiu,XIONG Jun,WANG Yuan-qing,et al.Experimental studies on seismic performance of multistorey steel frame with eccentric brace[J].Journal of Building Structures,2010,31(2):29-34.(in Chinese)
    [5]HOU X,TAGAWA H.Displacement-restraint bracing for seismic retrofit of steel moment frames[J].Journal of Constructional Steel Research,2009,65:1096-1104.
    [6]陆赐麟,刘学春.预应力钢结构技术的创新和拓展[J].钢结构,2008,23(8):1-5.LU Ci-lin,LIU Xue-chun.The innovation and development of prestressed steel structure technology[J].Steel Structure,2008,23(8):1-5.(in Chinese)
    [7]刘学春.新型大跨度弦支穹顶结构体系创新研究与奥运工程应用[D].北京:北京工业大学建筑工程学院,2010.LIU Xue-chun.Innovation of new-type large-span prestressing suspend-dome structure system and application of project for Beijing Olympic Games[D].Beijing:College of Architecture and Civil Engineering,Beijing University of Technology,2010.(in Chinese)
    [8]陆赐麟,尹思明,刘锡良.现代预应力钢结构[M].北京:人民交通出版社,2006.
    [9]张爱林.预应力钢结构技术发展及应用[J].钢结构,2005,20(6):108-109.ZHANG Ai-lin.Development and application of prestressed steel structure[J].Steel Construction,2005,20(6):108-109.(in Chinese)
    [10]KAWAGUCHI M,TATEMICHI I,CHEN P S.Optimum shapes of a cable dome structure[J].Engineering Structures,1999,21:719-725.
    [11]张爱林,王冬梅,刘学春,等.2008奥运会羽毛球馆弦支穹顶结构模型动力特性试验及理论分析[J].建筑结构学报,2007,28(6):68-75.ZHANG Ai-lin,WANG Dong-mei,LIU Xue-chun,et al.Dynamic performance experiment and theoretical analysis on the suspend-dome structure model of the badminton gymnasium for the 2008 Olympic Games[J].Journal of Building Structures,2007,28(6):68-75.(in Chinese)
    [12]葛家琪,王树,梁海彤,等.2008奥运会羽毛球馆新型弦支穹顶预应力大跨度钢结构设计研究[J].建筑结构学报,2007,28(6):10-21.GE Jia-qi,WANG Shu,LIANG Hai-tong,et al.Design and research of the large-span steel structure of the badminton gymnasium for 2008 Olympic Games[J].Journal of Building Structures,2007,28(6):10-21.(in Chinese)
    [13]杨维国,邹清,李兴坡,等.索托结构中拉索预应力水平的优化研究[J].中国矿业大学学报,2012,41(2):219-224.YANG Wei-guo,ZOU Qing,LI Xing-po.An optimized pre-stress level for the design of cable supported trusses[J].Journal of China University of Mining and Technology,2012,41(2):219-224.(in Chinese)
    [14]中国工程建设标准化协会.CECS212:2006《预应力钢结构技术规程》[S].北京:中国计划出版社,2006.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心