框架侧移刚度的计算
第三章框架侧移刚度的计算
3.1横梁线刚度i b的计算:
表3-1横梁线刚度ib
3.2柱线刚度计算
表3—2柱线刚度ic
1.底层
A,D:
K=5.4/7.12=0.758
αc=(0.5+K)/(2+K)=0.456
Di6=αc×12×i c/h2
=0.456×12×7.12×1010/45502
=18819.3
B,C:
K=(7.3+5.4)/7.12=1.8
αc=(0.5+K)/(2+K)=0.61
Di6=αc×12×i c/h2
=0.61×12×7.12×1010/45502
=24979.4
∑D1=18819.3×2+24979.4×2=87597.4
2、第二~六层:
A,D:
K=5.4×2/(9×2)=0.6
αc=K/(2+K)=0.23
Di1=αc×12×i c/h2
=0.23×12×9×1010/36002
=19230.77
B,C:
K=(5.4+7.43)/9=1.425
αc=K/(2+K)=0.416
Di6=αc×12×i c/h2
=0.416×12×9×1010/36002
=34685
∑D1=19230.77×2+34685×2=107831.64 ∑D1/∑D2=87597.4/107831.64=0.81>0.7 故框架符合要求
相关主题