差ѧԺľ̽רҵҵ 10ҳ
42ؼ
¥µĽṹͼͼʾͼиֵ :
P7AB= P7BC=2.03.4=6.8 kN/m P7CD=2.03.4=6.8 kN/m P7A=1/2(3.4+3.4-1.5) 0.752.0+1/23.41/23.42.0=9.76 kN P7D=1/23.41/23.42.0=5.78 kN P7B= P7C=21/23.41/23.42.0=11.58 kN
P7XL=2.51.5=3.75 kN/m P=1/21.51/21.52.5=1.41 kN м
PAB= PBC= PCD=2.03.4=6.8 kN/m
PA=1/2(3.4+3.4-1.5) 0.752.0+1/23.41/23.42.0=9.76 kN PD=1/23.41/23.42.0=5.78 kN PB= PC=21/23.41/23.42.0=11.58 kN
PXL=2.1.5=3.75 kN/m P=1/21.51/21.52.5=1.41 kN
差ѧԺľ̽רҵҵ 11ҳ
ͼ
差ѧԺľ̽רҵҵ 12ҳ
4.3ؼ
ѹw0=0.3kN/m2
wk=zszw0߶H=20.7 m <30mʦz=1.0 ھƽs=1.3zɲع淶 ̼± 7 6 5 4 3 2 1
ͼλkN
z 1.0 1.0 1.0 1.0 1.0 1.0 1.0 s 1.3 1.3 1.3 1.3 1.3 1.3 1.3 Z(m) 20.35 17.55 14.75 11.95 69.15 6.35 3.55 z 0.85 0.79 0.74 0.74 0.74 0.74 0.74 w0 0.3 0.3 0.3 0.3 0.3 0.3 0.3 A(m2) 9.66 11.76 11.76 11.76 11.76 11.76 13.34 PW 3.20 3.62 3.39 3.39 3.39 3.39 3.85
差ѧԺľ̽רҵҵ 13ҳ
.
5.1
1 صЧ м
:gXL=15.12+5/84.11=17.69 kN/m
gAB= gBC=15.12+1-20.40.4+0.40.4=22.05 kN/m gCD=15.13+1-20.470.47+0.470.47=21.28 kN/m ˵Ĺ̶Ϊ
M XL=1/217.691.51.5=19.90 kN.m M AB= MB A=1/222.054.24.2=32.41 kN.m M BC= M CB=1/222.054.24.2=32.41 kN.m M CD= MDC=1/221.283.63.6=22.98 kN.m 㣺
g7XL=2.28+5/85.22=5.54 kN/m
g7AB= g7BC=2.28+1-20.40.4+0.40.40.4=11.08 kN/m g7CD=2.03+1-20.470.47+0.470.470.47=9.86 kN/m ˵Ĺ̶Ϊ
M 7XL=1/25.541.51.5=6.23 kN.m M AB= MB A=1/211.084.24.2=16.29 kN.m M BC= M CB=1/211.084.24.2=16.29 kN.m M CD= MDC=1/29.863.63.6=10.65 kN.m صЧļͼ