高层、超高层建筑结构弹性阶段变形验算的研究
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摘要
为解决部分高层、超高层建筑结构弹性阶段变形验算不满足规范这一问题,对建筑结构规范中弹性阶段变形验算规定的目的、方法和限值进行了探讨。通过大量的结构分析计算,总结出了高层建筑结构受力与变形之间关系的一些规律。指出了建筑结构规范中有关弹性阶段变形验算部分的值得商榷之处,在此基础上提出了弹性阶段变形验算方法的改进建议。
Reviews the six opinions about the purposes of calculations for elastic deformation:1)Ensuring stability of buildings;2)Meeting the requirement of comfort;3)Enabling the P-Δeffect to be ignored;4)Avoiding the touch of adjacent buildings;5)Ensuring the structural components to undestroyed;6)Ensuring the accessorial components to undestroyed And analyses hundreds of buildings under wind and earthquake loads using a finite element anal-ysis program,which identifies the intentions of calculation for elastic deformation,and points out that nowadays,the calculation for elastic deformation of many high-rise buildings,especially some steel high-rise buildings,cannot meet the regulations of Chinese codes and this shows that the calculation for elastic deformation should be intensively studied and unified.And concludes from the results of stress of structural members and the deformation between two adjacent floors that elastic deformation calculation should not be used to ensure structural members not to be destroyed.Because the direct relationship between the stress of structural members and the de-formation between the two adjacent floors cannot be found.And it must be pointed out that the stress of the structural members and the deformation between the two adjacent floors in flexible structures are different in their distribution.
Reviews the six opinions about the purposes of calculations for elastic deformation:1)Ensuring stability of buildings;2)Meeting the requirement of comfort;3)Enabling the P-Δeffect to be ignored;4)Avoiding the touch of adjacent buildings;5)Ensuring the structural components to undestroyed;6)Ensuring the accessorial components to undestroyed And analyses hundreds of buildings under wind and earthquake loads using a finite element anal-ysis program,which identifies the intentions of calculation for elastic deformation,and points out that nowadays,the calculation for elastic deformation of many high-rise buildings,especially some steel high-rise buildings,cannot meet the regulations of Chinese codes and this shows that the calculation for elastic deformation should be intensively studied and unified.And concludes from the results of stress of structural members and the deformation between two adjacent floors that elastic deformation calculation should not be used to ensure structural members not to be destroyed.Because the direct relationship between the stress of structural members and the de-formation between the two adjacent floors cannot be found.And it must be pointed out that the stress of the structural members and the deformation between the two adjacent floors in flexible structures are different in their distribution.
引文
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2刘大海,杨翠如,钟锡根.高层建筑抗震设计M.北京:中国建筑工业出版社,1993.
3张相庭.高层建筑抗风抗震设计计算M.上海:同济大学出版社,1997.
4武藤清.结构物动力设计M.北京:中国建筑工业出版社,1984.
5赵西安,李国胜,李国强,等.高层建筑结构设计与施工问答M.上海:同济大学出版社,1991.
6N.M.纽马克,E.罗森布鲁斯著.地震工程学原理M.叶耀先,蓝倜恩,钮泽蓁,译.北京:中国建筑工业出版社,1986.
7IgnacioMartin.高层建筑中侧向位移的限制A.高层建筑结构概念与结构设计译文集C.建筑科学编辑部,1988.
8龚思礼,高小旺,汪颖富.建筑抗震设计新规范(89)讲评M.北京:中国建筑工业出版社,1990.
9钟益村,王文基,田家骅.钢筋混凝土结构房屋变形性能及容许变形指标J.建筑结构,1984,(2):38-45.
10JGJ99-98,高层民用建筑钢结构技术规程S.
11潘亦培.框剪结构的几何与材料非线性分析J.同济大学学报,1991,9:265-272.
12AvigdorRutenberg.Adirectp-deltaanalysisusingstandardplaneframecomputerprogramsJ.Computer&Structures1981,141-2:97-102.
13GBJ11-89,建筑抗震设计规范S.
14JGJ3-91,钢筋混凝土高层建筑结构设计与施工规程S.
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