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      蔣利學(xué)      （上海市建筑科學(xué)研究院 200032）

[提要]  國(guó)內(nèi)外規(guī)范均以限制層間位移角的方式來(lái)控制高層建筑的結(jié)構(gòu)與非結(jié)構(gòu)構(gòu)件出現(xiàn)影響正常使用的裂縫與損壞，而最常見(jiàn)的彎剪型結(jié)構(gòu)中層間位移角與結(jié)構(gòu)及非結(jié)構(gòu)構(gòu)件受力狀態(tài)的相關(guān)性較差。作者提出一個(gè)限制高層建筑層間變形的新參數(shù)——廣義剪切變形，證明了其與剪力墻、柱、梁及填充墻等結(jié)構(gòu)與非結(jié)構(gòu)構(gòu)件受力狀態(tài)有很好的相關(guān)性，導(dǎo)出了廣義剪切變形的計(jì)算方法及其與層間位移角的關(guān)系，并對(duì)豎向構(gòu)件、框架區(qū)格與連梁的廣義剪切變形限值分別進(jìn)行分析與討論。九幢超高層建筑算例表明，用廣義剪切變形的參數(shù)分析超高層建筑的層問(wèn)變形具有明顯的優(yōu)越性。
[關(guān)鍵詞]  超高層建筑  層間位移  廣義剪切變形  相關(guān)性

Almost all of the building codes at home and abroad limit interstory drift in order to prevent structural and nonstructural components from cracking and deteriorating to affect their serviceability. Howcever, the correlation between interstory drift and the stress status of structural and nonstructural components is quite poor. A new parameter to limit the interstory deformation of high-rise buildings-generalizcd shear deformation is developed, a good corretation between this parameter and the stress status of the components such as shear walls, columns, beams and partition fitted walls is proved. In addition, the calculating method of generalized shear deformation and the relationship between this parameter and interstory drift are presented, and the limit valucs of the generalizcd shear deformation for vertical members, frame regions and link beams are analyzcd and discussed. It is proved by the analysis of nine super high-rise buildings that using the parameter of generalizcd shear deformation to analyze the interstory deformation of super high-rise buildings is of obvious advantages.
Keywords:  super high-rise building; interstory drift; generalizcd shear deformation; correlation