今天发现pkpm楼板计算中有个问题,楼板支座的计算弯矩图和计算书中的计算弯矩不一致,有哪位知道是什么原因呢?这是pkpm的计算书:二、计算结果: Mx =(0.01760+0.01760/5)*(1.20* 35.0+1.40* 10.0)* 4.1^2 = 19.40kN·M 考虑活载不利布置跨中X向应增加的弯矩: Mxa =(0.03680+0.03680/5)*(1.4* 10.0)* 4.1^2 = 10.14kN·M
这是pkpm的计算书:
二、计算结果:
Mx =(0.01760+0.01760/5)*(1.20* 35.0+1.40* 10.0)* 4.1^2 = 19.40kN·M
考虑活载不利布置跨中X向应增加的弯矩:
Mxa =(0.03680+0.03680/5)*(1.4* 10.0)* 4.1^2 = 10.14kN·M
Mx= 19.40 + 10.14 = 29.54kN·M
Asx= 822.82mm2,实配φ12@125 (As = 905.mm2)
ρmin = 0.236% , ρ = 0.452%
My =(0.01760+0.01760/5)*(1.20* 35.0+1.40* 10.0)* 4.1^2= 19.40kN·M
考虑活载不利布置跨中Y向应增加的弯矩:
Mya =(0.03680+0.03680/5)*(1.4* 10.0)* 4.1^2 = 10.14kN·M
My= 19.40 + 10.14 = 29.54kN·M
Asy= 877.20mm2,实配φ12@125 (As = 905.mm2)
ρmin = 0.236% , ρ = 0.452%
Mx’ =0.05130*(1.20* 35.0+1.40* 10.0)* 4.1^2 = 47.12kN·M
Asx’=1359.42mm2,实配φ16@100 (As =2011.mm2,可能与邻跨有关系)
ρmin = 0.236% , ρ = 1.005%
My’ =0.05130*(1.20* 35.0+1.40* 10.0)* 4.1^2 = 47.12kN·M
Asy’=1359.42mm2,实配φ16@100 (As =2011.mm2,可能与邻跨有关系)
ρmin = 0.236% , ρ = 1.005%
pkpm的弯矩计算图: