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pBCsstF1psst..word.zl-

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..-參考答案一判題二單選題三填題x

四計題

M()0:F:FyBC7.5kNF2.5kNBCAC

F:FyACM()AA

F2.5kNMA

M()0:DF:FyBDFF10kNBDy157.5mmy72.5mm..word.zl-

AyDy..-AyDy

tmax

M203BIz

24.1MPat

tmax

M10157.51I60125000z

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MyB1Iz

]c

DM()Ft2

FF2.5kNyyABCr3

M32(

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d

3

32M)y

2

5.1mm

M()FPAF:FPAyy15FPFP22..word.zl-

ttc..-ttc

tmax

MyC2Iz

Pa2]IzP24.5kN

tmax

MyPaD11]IIzzP22.1kN

yD2]IIzP42.0kNP..word.zl-

st..-st

FN

M4FW

32Fa)Fl)23

2

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F22

(F)2Fl)23

2

)

2

4(1

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2

M()CABAB

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140/4

6

99.3ABFAcrcr

E220042

2

248.1ncr2.6593.75ABAB..word.zl-

tmaxttc..-tmaxttcyy20.8A1]IIzzP

tmax

My2]IIzP44.2kNcmax

MyPA2]IIzP

FNA2

3

σ，σxyx

x

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x

y

cos2

x

sin2

13.95MPa

75.15MPa

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r4

.

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2

7MPa

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crcrsty..-crcrsty

M

A

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i

180/4

2006

99.3p

E220092FA42248.1ncr3.9762.5AB

F

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F:FyM()FAF20kNF7.5kN

M()0:Ay

125

F12.5kN..word.zl-

pst..-pstFM3NzW2z

32

29.84MPaT

29.8426.96r3F

i

1204

200E2006p

9

pFAcr

E2002002

3.0ABF5.17kN

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tmax

My40/DI1.738z

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97.8

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E220092424

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FFsinxC

aM()0:BFBx

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cr..-cr

FM4FNW2

32Fl2

Fl3

2T16M3

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