鈥斺�?/p>
61
鈥斺�?/p>
褰卞搷绾垮強鍏跺簲鐢?/p>
涓�銆佸垽鏂锛?/p>
1
銆佸浘绀虹粨鏋?/p>
M
C
褰卞搷绾垮凡浣滃嚭濡傚浘锛?/p>
a
锛夋墍绀猴紝鍏朵腑绔栨爣
E
y
琛ㄧず
P
= 1
鍦?/p>
E
鏃讹紝
C
鎴潰鐨勫集鐭╁�笺�?/p>
M
C
褰?/p>
鍝?/p>
绾?/p>
D
E
A
B
C
P
=1
y
E
锛?/p>
a
锛?/p>
12m
A
B
6m
2m
60kN
60kN
C
锛?/p>
b
锛?/p>
2
銆佸浘锛?/p>
b
锛夋墍绀烘鍦ㄧ粰瀹氱Щ鍔ㄨ嵎杞戒綔鐢ㄤ笅锛屾敮搴?/p>
B
鍙嶅姏鏈�澶у�间负
110 kN
銆?/p>
浜屻�佷綔鍥俱�佽绠楅锛?/p>
3
銆佷綔鍥剧ず姊佷腑
R
A
銆?/p>
M
E
鐨勫奖鍝嶇嚎銆?/p>
2
a
a
a
A
B
C
D
E
a
4
銆佸崟浣嶈嵎杞藉湪姊?/p>
DE
涓婄Щ鍔紝浣滄
AB
涓?/p>
R
B
銆?/p>
M
C
鐨勫奖鍝嶇嚎銆?/p>
P=
1
a
a
2
a
A
B
C
D
E
5
銆佷綔鍥剧ず缁撴瀯
R
B
銆?/p>
Q
B
鍙?/p>
褰卞搷绾裤�?/p>
P
=1
B
C
D
A
E
4m
4m
2m
2m
6
銆佷綔鍥剧ず姊佺殑
M
K
銆?/p>
Q
E
褰卞搷绾裤�?/p>
a
a
a
a
a
a
a
a
K
E
F
2