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(中國(guó)建筑設(shè)計(jì)研究院 北京 100044)
【提要】 現(xiàn)行規(guī)范的建筑結(jié)構(gòu)扭轉(zhuǎn)不規(guī)則判別指標(biāo)——樓層的最大彈性水平位移與該樓層兩端彈性水平平均位移的比值不能很好地反映結(jié)構(gòu)扭轉(zhuǎn)不規(guī)則的程度。建議改用剛性樓板假定下的樓層轉(zhuǎn)角界定結(jié)構(gòu)扭轉(zhuǎn)不規(guī)則的程度。該轉(zhuǎn)角值取1/16 000，1/8 000及1/4 000可作為框架結(jié)構(gòu)，1/24 000，1/12 000及1/6 000可作為框架剪力墻結(jié)構(gòu)，1/32 000，1/16 000及1/8 000可作為剪力
墻結(jié)構(gòu)扭轉(zhuǎn)不規(guī)則、特別不規(guī)則及嚴(yán)重不規(guī)則的判別界限。
【關(guān)鍵詞】 扭轉(zhuǎn)不規(guī)則 樓層轉(zhuǎn)角 判別界限
Discussion on Judgement Index of Torsional Irregularity for Building Structure/Chen Caibao,An Lai (China Architecture Design and Research Group,Beijing 100044,China)
Abstract:Current judgement index of torsional irregularity for building structure—the ratio of floors' maximum elastic displacement to average displacement of two ends of the floor can not reflect structure torsional irregularity exactly. The floor torsional angle as the hypothesis of floor slab rigidity is suggested to be the judgement index of torsional irregularity. The angle values which are 1/16 000,1/8 000 and 1/4 000 for the frame structure,1/24 000,1/12 000 and 1/6 000 for the frameshear wall structure,and 1/32 000,1/16 000 and 1/8 000 for the shear wall structure,are suggested as judgement limits of structure torsional irregularity,specialirregularity and seriousirregular
ity.
Keywords:torsional irregularity; torsion angle of floor; judgement index