鐩村緞
1.4m
鐑熷洷璁＄畻涔?/p>
鐑熷洷褰㈠紡锛氱洿寰?/p>
1400mm
锛岄珮
15m
锛屽熀纭�椤惰嚦
10m
鏍囬珮閲囩敤
蠁
2600x12
鐨勯挗
绠★紝
涓婃閲囩敤
蠁
2596x10
閽㈢锛?/p>
璁＄畻鏃跺皢鐑熷洷鎸夋爣楂樺垎涓?/p>
0-10m
锛?/p>
10-15m
锛?/p>
15-20m
锛?/p>
20-28.1m
鍏?/p>
4
娈点�?/p>
1
銆佹湁鍏冲嚑鍜屽弬鏁帮細
瑙佷笅琛細
鍑犱綍鍙傛暟銆侀鍘嬮珮搴﹀彉鍖栫郴鏁板拰鑴夊姩褰卞搷绯绘暟
鏍囬珮
(m)
澶栧緞
B
(m)
褰㈠績楂樺害
z (m)
椋庤嵎杞戒綔鐢?/p>
闈㈢Н
(m
2
)
褰㈠績澶勭殑
澶栧緞
(m)
z/H
楂樺害鍙?/p>
鍖栫郴鏁?/p>
鑴夊姩褰?
鍝嶇郴鏁?/p>
28.1
2.596
24.05
21.03
2.596
0.856
1.39
0.823
20
2.596
17.5
12.98
2.596
0.623
1.20
0.823
15
2.596
12.5
12.98
2.596
0.445
1.07
0.823
15
1.4
7.5
21
1.4
0.5
1.13
0.823
0
2
銆侀鑽疯浇浣撳瀷绯绘暟锛?/p>
鎬婚珮搴︿负
15m
锛屽钩鍧囩洿寰勪负杩戜技鍙寜
1.4m
锛?/p>
渭
z
蠅
0
d
2
=
渭
z
*0.6*1.4
2
=1.176
渭
z
锛?/p>
鍦伴潰绮楃硻搴︾被鍒负
B
绫伙紝鎵�浠?/p>
渭
z
鈮?/p>
1.0
锛屽緱
渭
z
蠅
0
d
2
>0.015
锛?/p>
H/d=15/1.4=10.72
锛?/p>
鍙堝洜姝ら挗鐑熷洷琛ㄩ潰鈥滃厜婊戔�?/p>
锛屾墍浠ュ彲寰?/p>
渭
s
=0.6+(0.5-0.6)/(7-25)*(10.8-25)=0.52
3
銆侀杞界殑楂樺害鍙樺寲绯绘暟
鍦伴潰绮楃硻搴︾被鍒负
B
绫伙紝鏌ャ�婂缓绛戠粨鏋勮嵎杞借鑼冦�嬭〃
7.2.1,
寰楀悇楂樺害澶勭殑椋?/p>
鍘嬮珮搴﹀彉鍖栫郴鏁?/p>
渭
z
瑙佷笂琛ㄣ�?/p>
4
銆侀鎸郴鏁?/p>
鏍规嵁銆婂缓绛戠粨鏋勮嵎杞借鑼冦�?/p>
7.4.2
鏉★紝鐭ユ湰鐑熷洷鍙彧鑰冭檻绗竴鎸瀷鐨勫奖鍝嶏紝
椤洪鍚戦鎸郴鏁板彲鎸?/p>
尾
z
=1+(
尉
谓
蠁
z
)/
渭
z
璁＄畻銆?/p>
鏌?/p>
銆婂缓绛戠粨鏋勮嵎杞借鑼冦�?/p>
闄勫綍
E
缁?/p>
鏋勫熀鏈嚜鎸懆鏈熺殑缁忛獙鍏紡寰楃儫鍥卞熀鏈嚜鎸懆鏈熶负
T
1
=0.011H=0.011x15=0.165s
锛?/p>
0.25s
锛屾晠涓嶉渶瑕佽�冭檻椤洪鍚戦鎸奖鍝嶃�?/p>
5
銆佸悇娈甸鑽疯浇鐨勯泦涓姏
搴旂敤銆婂缓绛戠粨鏋勮嵎杞借鑼冦�嬩腑寮?/p>
7.1.1
鏉?/p>
蠅
k
=
尾
z
渭
s
渭
z
蠅
0
姹傞鑽疯浇锛屽悇鍒嗘
鐨勯泦涓姏
Pi=
蠅
k
A
w
锛屾澶?/p>
A
w
鐨勪负椋庤嵎杞戒綔鐢ㄩ潰绉紝鍏惰绠楄繃绋嬭涓嬭〃锛?/p>
椋庤嵎杞芥爣鍊艰绠?/p>
鏍囬珮
z (m)
椋庤嵎杞戒綔
鐢ㄩ潰绉?/p>
渭
s
蠅
0
渭
z
尾
z
蠅
k
(kN/m
2
)
闆嗕腑鍔?
P
k
(kN)
24.05
21.03
0.52
0.6
1.39
1.86
0.52*0.6*1.39*1.8
6=0.81
21.03*0.81
=17.03
17.5
12.98
0.52
0.6
1.20
1.60
0.52*0.6*1.2*1.60
=0.60
12.98*0.60
=7.79
12.5
12.98
0.52
0.6
1.07
1.38
0.52*0.6*1.07*1.3
8=0.43
12.98*0.43
=5.58
7.5
21
0.52
0.6
1.1
1
0.52*0.6*1.1*1=0
.3432
21*0.3432=
7.2
6
銆佸簳閮ㄤ骇鐢熺殑寮煩鍜屽壀鍔?/p>