3-1
鏌愬洓灞傚洓璺ㄧ幇娴囨鏋剁粨鏋勭殑绗簩灞傚唴鏌辫酱鍚戝帇鍔?/p>
璁?/p>
璁?/p>
鍊?/p>
N=140
脳
104N,
妤?/p>
灞?/p>
楂?/p>
H
锛?/p>
5.4m,
璁?/p>
绠?/p>
闀?/p>
搴?/p>
L0=1.25H,
娣锋偿鍦熷己搴︾瓑绾т负
C20
锛?/p>
HRB400
绾ч挗绛嬨�?/p>
璇?/p>
姹傛煴鎴潰灏哄鍙婄旱绛嬮潰绉�?/p>
銆?/p>
瑙?/p>
銆?/p>
鏌?/p>
琛?/p>
寰?/p>
锛?/p>
1
飦?/p>
=1.0
,
c
f
=9.6N/
2
mm
,
y
f
飩?
=360N/
2
mm
0
l
=1.25
飩?/p>
5.4
锛?/p>
6.75m
鎸?/p>
鏋?/p>
閫?/p>
瑕?/p>
姹?/p>
鍙?/p>
鏋?/p>
浠?/p>
闀?/p>
缁?/p>
姣?/p>
锛?/p>
:
15
l
b
飥?/p>
鍗?
b=
l
0
=6.75
飩?/p>
10
3
/15=450mm
璁捐鏌辨埅闈负鏂瑰舰锛屽垯
b
飩?/p>
h=450mm
飩?/p>
450mm
鏌ヨ〃
3-1
寰楋細
飦?/p>
=0.895
S
A
飩?
=(N-0.9
飦?
c
f
A
锛?
/0.9
飦?/p>
y
f
飩?/p>
=
4
140
10
0.9
0.895
9.6
450
450
0.9
0.895
360
飩?/p>
飥?/p>
飩?/p>
飩?/p>
飩?/p>
飩?/p>
飩?/p>
飩?/p>
mm<0.1943
鎸夌収鏋勯�犻厤绛嬪彇
0
0
min
0.6
飦?
飥?/p>
锛?/p>
0
0
0
0
0.6
3
飩?/p>
飦?/p>
飩?/p>
锛?/p>
飦?/p>
S
A
飩?
锛?/p>
0
0
0.6
bh
=
0
0
0.6
450
450
1215
飩?/p>
飩?/p>
飥?/p>
2
mm
閫夐厤閽㈢瓔锛屾煡闄勮〃
11-1
寰楋紝
4
20
锛?/p>
S
A
飩?/p>
锛?/p>
1256
2
mm
锛?/p>
绠嶇瓔鎸夋瀯閫犺姹傞�夊彇锛屽彇
s=250mm
锛?/p>
d=6mm
3-2
鐢变簬寤虹瓚涓婁娇鐢ㄨ姹傦紝鏌愮幇娴囨煴鎴潰灏哄涓?
250mm
脳
250mm
锛屾煴楂?/p>
4.0m
锛岃绠楅珮搴?/p>
L0=0.7H=2.8m,
閰嶇瓔涓?/p>
4
16
锛?/p>
As/=804mm2
锛?/p>
銆?/p>
C30
娣锋偿鍦燂紝
HRB400
绾?/p>
閽㈢瓔锛屾壙鍙楄酱鍚戝姏璁捐鍊?/p>
N=950KN
銆傝瘯闂煴鎴潰鏄惁
瀹夊叏锛?/p>
銆?/p>
瑙?/p>
銆?/p>
鏌?/p>
琛?/p>
寰?/p>
锛?/p>
1
飦?/p>
=1.0
,
c
f
=14.3N/
2
mm
,