I

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,M : :______________________________ _________________________________

2014 206 . : __________ / __________

1., :1. ( ).2. , 3. .4. 2 3 .

F1 = 6 kN ; F2 = 8 kN ; F3 = 2 kN ; l = 1 m

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(1). Xi = 0 => XB F3 = 0(2). Yi = 0 => YA F2 F1 + YB =0(3). MA = 0 => F3*1 F2*2 F1*3 YB*4 = 0

(1). XB 2 = 0 => XB = 2 kN(3). 2 8*2 6*3 4YB =0 2 16 18 4YB = 0 36 4YB = 0 YB = YB = 9 kN(2). YA 8 6 + 9 =0 YA 5 = 0 YA = 5 kN-3- I :1.Xi=0 => S1 S22. Yi=0 => YA S2

2. 5 S2 = 0 1. S1 52* = 0 S2 = 5 /*(1) S1 5 = 0 S2 = 5 /*2 S1 = 5 kN S2 = 52 S2 = 5 * 1,414 S2 = 7.07 kN II : 1.Xi=0 => S4 S1 = 02.Yi=0 => S3 = 0 1.S4 5 = 0 S4 = 5 kN

VIII :1.Xi=0 => XB S12 S13 = 02.YB=0 => YB S13 = 0

2. 9 S13 = 0 1. 2 S12 92* = 0 S13 = 9 /*(1) 2 S12 9 = 0 S13 = 9 /*2 S12 7 = 0 S13 = 92 S12 = 7 /*(1) S13 = 9 * 1,414 S12 = 7 kN S13 = 12.726 kN-4- VII :1.Xi=0 => S12 S8 = 02.Yi=0 => F1 S11 = 0

1.7 S8 = 0 2.6 S11 = 0 S8 = 7 /*(1) S11 =6 /*(1) S8 = 7 kN S11 = 6 kN

VI :1.Xi=0 => S13 S9 S10 = 02.Yi=0 => S11 +S9 S10 + S13 = 0

1.S13 S10 = 0 /*(92) 2. 6 +S9 92* + 92* = 0 S13 S10 =0 6 + S9 = 0 92 S10 = 0 S9 = 6 /*(2) S10 = 92 /*(1) S9 = 62 S10 = 92 S9 = 6 * 1,414 S10 = 9*1,414 S9 = 8,484 kN S10 = 12,726 kN

-5- V :1.Xi=0 => S10 S6 = 02.Yi=0 => S7 F2 S6 + S10 = 0

1.92* + S6 = 0 2.S7 8 92* + 92* = 0 9 + S6 = 0 S7 8 = 0 S6 = 9 /*(2) S7 = 8 kN S6 = 92 kN S6 = 9 * 1,414 S6 = 12,726 kN

IV :1.Xi=0 => S8 S4 + S9 S5 = 02.Yi=0 => S7 S5 S9 = 0

1.7 5 + 62* S5 = 0 12 + 6 S5 = 0 6 S5 =0 S5 = 6 /*(2) S5 = 62 S5 = 6 * 1,414 S5 = 8,848 kN

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3.-7-UF = 1 kN/10 mm

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1.MB=0 => F1 S11 = 02.MVI=0 => S8 + YB XB = 03.MVII=0 => YB S132 = 0

1.6 S11 = 0 S11 = 6 /*(1) S11 = 6 kN2.S8 + 9 2 = 0 S8 + 7 = 0 S8 = 7 kN3.9 S132 = 0 S132 = 9 /*(2) S13 = 92 kN

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