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10

10.1

123

301015m5.0m

12

3130kPa

456

12

31.04

501.0

Sk= SGk SQ1k c2SQ2k cnSQnk Sk= SGk q1SQ1k q2SQ2k qnSQnk Sd = GSGk Q1SQ1k Q2c2SQ2k QncnSQnk SGk Gk SQik iQik ci iQi 0.70.9 qi i 0.30.8 G 1.2 / 1.35 Qi i 1.3 / 1.4

SdSd 1.35Sk Sk

0 Sd Rd 0 Sd Rd

(1) (2) (3) (4) (5) (6) (7)

10.2

H0

MU10 M5100mmC10C7.5

(a) (b)

200mm200mm150mm

1:2:41:3:6220mm150mm

3:72:8220 ~250mm150mm1.55t/m31.50t/m3 1.45t/m3

C152530 300mm

h1b1300mm20dd 10d20d

()

a b cabc

10.3 1 0.5m1/151/18

2

3

MRMs 1.2 MR Ms

3m2.5m

a b d

458m

h0

k0.7~1

4

5

zd zd z0 zs zw ze zd z0 zs zw ze dmin= zd - hmax hmax

z0

zs

zs zs 1.00 1.30 1.20 1.40

zw

zw 1.00 0.95 0.90 0.85 0.80

ze

20~50501001005km

ze 1.00 0.95 0.90

hmax

10.5

fa pk

Fk kN Am2 Gk

G G =20kN/m3 dm

Abllb

1m

pk fa 1.2 pkmax 1.2 fa e l/6 e b/6

Wx = bl2/6 Wy = b2l/6ex = Mkx / (Fk + Gk), ey = Mky / (Fk + Gk)MkWkPkmaxPkmin

e b/6 pkmax

l a

pk fa 1.2 pkmax 1.2 fa

e l/6 e b/6

Wx = bl2/6 Wy = b2l/6ex = Mkx / (Fk + Gk), ey = Mky / (Fk + Gk)MkWkPkmaxPkmin

e b/6 pkmax

l a

1 A1 b12 A1 b1 10%~40% A=1.11.4 A1

3 Apkmax pkmin:pk(pkmax pkmin) / 2 fa pkmax 1.2 fa

pz pcz faz pz pcz faz

b l pc, kPa z

1. Es1Es2 2. z/b < 0.25 = 0 z/b > 0.50

1.

b d01.0e IL 0.8501.0w > 0.8 w 0.800.151.21.40.95,c10%2.1t/m3001.52.0c10%c

2. 3. 20%4.

5. GkG A d = 202.41.61.15 = 88.3kNpkmax= 261.7 kPa < 1.2fa =1.2240 = 288.0kPa pkmin= 148.8 Pa > 0pk= (261.7+149)/2 = 205.3kPa < fa = 240.0kPa

240mm0.5m17.2kN/m3170kPa18.0kN/m30.900.880.8m190kN/m

(1) d = 0.8m

e = 0.88IL= 0.90>0.8510.11b = 0d = 1.0fa = 170+1.017.5(0.8-0.5) = 175.3kPa

b < 3mb = 1.2m

2MU10M5C15300mm

10.41.0300mm

H = 1202+60+300 = 600mm800-600 = 200mm > 100mm3002+240+606 = 1200mm200kN/mb = 1.4m0.4m

(1) d = 0.8m

e = 0.88IL= 0.90>0.8510.11b = 0d = 1.0fa = 170+1.017.5(0.8-0.5) = 175.3kPa

b < 3mb = 1.4m

2MU10M5C15400mm

10.41.0400mm

n = 3

H = 1202+60+400 = 700mm800-700 = 100mm4002+240+606 = 1400mm

Fk= 1100kNMk= 140 kNm3.6m2.6m

(1)

e = 0.8IL= 0.8210.11 b = 0.3d = 1.6fa = 135+1.613.5(2-0.5) = 167.4kPaGk (201.2+100.8)3.62.6 = 299.5kN e = 140/(1100+299.5) = 0.10m pk = (1100+299.5)/(3.62.6) = 149.5kPa < fa ()

pkmax= 174.4 kPa < 1.2fa = 200.9kPa () pkmin= 124.6kPa > 0 ()2pcz = 16.51.2+(19-10)3.8 =54kPaz = 54/5 =10.8kN/m310.11d = 1.0 fza = 85+1.010.8(5-0.5) = 133.6kPaEs1/Es2 = 7.5/2.5 = 3z/b = 3/2.6 >0.510.12 = 23

pz + pcz = 36.2+54 = 90.2kPa< faz=133.6kPa()

10.6

6~10m

1. 2. 3. l (mm)Hg(m)4. 5. 610m

he1czp1e2czzp2Es

scc c 1.0pc(kPa)Eci GB/T50123-1999

10.7

1. 200mm300~500mm2. 70mmC103. 10mm200mm100mm8mm300mm15%40mm70mm

4. C205. 2.5m0.9()

6. T1/4()()

()

bh

pjpjkPa

FkN/mMkNm/m

II

VI (kN/m)MI(kNm/m )

bt ; p1jpjmaxI-I

a1I-Im: I-I a1b1 1/4I-I a1 = b1 + 1/4m p1jpjmaxpjminI-I

h0mm

ft MPa h0mm h h =(800/ h0)1/4h0 2000mm h0 = 2000mm h h0 h = b/8

As fy

bh

Fl 0.7 hp ft am h0 am= (at + ab) / 2 Fl = pj Al hph800mm hp1.0h2000mm hp0.9;

1-2-

fth0amat

ab(10-24ab)22

pj Al (10-24abABCDEFFl Al

Vs 0.7 hs ft A0hs = (800/h0) 1/4 Vs (kN)hsh0 < 800mmh0 = 800mmh0 > 2000mmh0 = 2000mmA0(m2)U

a b

2.5b/6b

MIIIMIV

10.8

1. 1/4 ~ 1/8200mm250mm1:32. 0.25

3.

4. 1/35. C20

abcde

1. l

2.

3. 1. 1/61.22. 3.

3. 4. 5. 6.

4.

4. Winkler

4.

20%

12 RFi L RFi xc A

a1 a2 a a1 a2 0.250.33 xc L a1 L= 2(xc + a1) = a1 + a + a2 a2 = 2 xc + a1 - a a2 a1 a a2 2 xc4 fa b

5pjmaxpjmin

6h7MQ8910

FiQiQiRiPiPi = Fi Ri Ri = Qi- Qiq1 = P1 /(l0 + l1/3) ()qi = Pi /(li-1/3 + li/3) () qi li-1 li i

10.4

10%MQ

10.9

10.10

1 2 3 4

1.

E

2. LHf

1L/Hf2.52.5< L/Hf 3.0120mm 2 3

7.6

3. 123456

abcc)

4.

(m) 1. L(m)Hf (m) 2. 1.5< L/Hf

5. 1 2

160%~70%40%~50% 1

2 3

2. 1120mm C15 48300mm 24~6M5 46 120mm

12

3 1 2 3 4

4

1 200mm

2

3.