大跨度悬挑混凝土框架斜拉索结构设计与研究  被引量:2

Design and Analysis of Large Span Cantilever Concrete Frame-Cable Structure

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作  者:张凝[1] 黄勇[2] 

机构地区:[1]贵州大学土木工程学院,贵州贵阳550025 [2]贵州大学建筑与城市规划学院,贵州贵阳550025

出  处:《贵州大学学报(自然科学版)》2015年第5期76-83,共8页Journal of Guizhou University:Natural Sciences

基  金:国家自然科学基金项目(50478122)

摘  要:遵义规划展览馆为四周大悬挑钢筋混凝土建筑,悬挑距离达22 m,结构自重大、扭转效应明显、竖向刚度明显不规则。设计建立了两种不同的大跨度混凝土框架-斜拉索结构方案,方案一为内拉式,方案二为外拉式,并运用Midas Gen有限元软件对两种方案进行了静动力有限元分析。分析结果表明,静力荷载作用下,方案一在竖向挠度、结构内力分布等方面优于方案二;地震作用下,两种方案的层间位移角、剪重比、底部剪力等计算结果相差不多。两种方案分析结果均满足现有规范的要求。The Zunyi Planning Exhibition Hall was reinforced concrete building, surrounded by large cantilever overhung distance up to 22 m. The structure with big dead weight, irregular torsion effect obviously, vertical stiffness significantly. Two different kinds of large span cantilever concrete frame-cable structures were designed and established, one is intra-cable the other is outer-cable. The Midas Gen software was used to conduct static and dynamic analysis for two schemes respectively. Analysis results show that under the action of static loads of first scheme in the vertical deflection and structure internal force distribution is better than the second scheme; Under the action of earthquake, two schemes of inter story displacement Angle, shear ratio, shear at the bottom of the calculation results are similar. Two kinds of scheme analysis results meet the requirements of existing spec- ifications.

关 键 词:大跨度悬挑结构 钢筋混凝土框架 预应力斜拉索 

分 类 号:TU398[建筑科学—结构工程]

 

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