受 力 分 析 习 题 课画出各构件的受力图
· o2.
1.
A B A B
DA BαD
A B
α
O
A B
F?
F?
F?
F?DA
Bα
F? F?
DN
BN
AX
AY
AR
BN?
AX
AY
DN
AR?
3.
C
B
A
C
A
C
A B
CF?
F?
F?
F?
CR
BR
CR′
CR′
AX
AY
AR
CR
4.
F?
BC
A
C B
A
C B
A
· O
C
B
A
AN
CR
C
A
B
F?
CX
CY
F?
F?
AN
AN
B
A
B
C D
E
D
5.
B
C
A
ED
F?
F?
BR
AR
BR′
CX
CY
DN
DN′
ER
B
C D
BR′
CR
DN′
6.
B
AD
C
B
B
B
D
A C
1T
B
D
A
C
P?
P? P?2T?
2T′
DR
CR
DR
BX
BY
AX
AY
AX
AY
BX
BY
CR′
BX′
BY′
BX′
BY′
1T
q
D
m
B
C
A
7.
D
C
q m
FD
FCy
FCx
CA B
FCy′FCx′FB
FAy
FAx
q
9.
8,C A
AA
B
FA1
FA1′
FA2
FA2′F
B
C
A
F
AB
C G
A
A
CF
C
FA1
ABFB FA2
FAy3
FAx3
FT2
FT1 AF
A1′
FA2′
FAy3′
FAx3′
FCFB
10.
G
B
C
D E
A
F
D EF
D
FE
B
C
FE′ · O
FB
FC
G
C
F
FCy
FCx
C
A
FCy
FCx
FD′
FAy
FAx
C
FC′
FCy′
FCx′
FCy
FCx
作业,1-3,1-4