04 Tablice-beton Prema EC2

Betonske konstrukcije - EC2

1

Tablica za dimenzioniranje AB pravokutnih presjeka prema EC2

εc2 (%o) εs1 (‰) ξ=x/d ζ=z/d μsd -0.1 20.0 0.005 0.998 0.000 -0.2 20.0 0.010 0.997 0.001 -0.3 20.0 0.015 0.995 0.002 -0.4 20.0 0.020 0.993 0.003 -0.5 20.0 0.024 0.992 0.005 -0.6 20.0 0.029 0.990 0.007 -0.7 20.0 0.034 0.988 0.009 -0.8 20.0 0.038 0.987 0.011 -0.9 20.0 0.043 0.985 0.014 -1.0 20.0 0.048 0.983 0.017 -1.1 20.0 0.052 0.982 0.019 -1.2 20.0 0.057 0.980 0.023 -1.3 20.0 0.061 0.978 0.026 -1.4 20.0 0.065 0.977 0.029 -1.5 20.0 0.070 0.975 0.033 -1.6 20.0 0.074 0.973 0.036 -1.7 20.0 0.078 0.971 0.039 -1.8 20.0 0.083 0.969 0.043 -1.9 20.0 0.087 0.968 0.046 -2.0 20.0 0.091 0.966 0.050 -2.1 20.0 0.095 0.964 0.053 -2.2 20.0 0.099 0.962 0.056 -2.3 20.0 0.103 0.960 0.060 -2.4 20.0 0.107 0.959 0.063 -2.5 20.0 0.111 0.957 0.066 -2.6 20.0 0.115 0.955 0.069 -2.7 20.0 0.119 0.953 0.073 -2.8 20.0 0.123 0.951 0.076 -2.9 20.0 0.127 0.949 0.079 -3.0 20.0 0.130 0.947 0.081 -3.1 20.0 0.134 0.945 0.084 -3.2 20.0 0.138 0.943 0.088 -3.3 20.0 0.142 0.942 0.091 -3.4 20.0 0.145 0.940 0.093 -3.5 20.0 0.149 0.938 0.096 -3.5 19.5 0.152 0.937 0.098 -3.5 19.0 0.156 0.935 0.100 -3.5 18.5 0.159 0.934 0.102 -3.5 18.0 0.163 0.932 0.105 -3.5 17.5 0.167 0.931 0.107 -3.5 17.0 0.171 0.929 0.109 -3.5 16.5 0.175 0.927 0.112 -3.5 16.0 0.179 0.926 0.114 -3.5 15.5 0.184 0.923 0.117 -3.5 15.0 0.189 0.921 0.120 -3.5 14.5 0.194 0.919 0.123 -3.5 14.0 0.200 0.917 0.126 -3.5 13.5 0.206 0.914 0.130 -3.5 13.0 0.212 0.912 0.133 -3.5 12.5 0.219 0.909 0.137 -3.5 12.0 0.226 0.906 0.141 -3.5 11.5 0.233 0.903 0.145 -3.5 11.0 0.241 0.900 0.149


2

εc2 (%o) εs1 (‰) ξ=x/d ζ=z/d μsd

-3.5 10.5 0.250 0.896 0.154 -3.5 10.0 0.259 0.892 0.159 -3.5 9.5 0.269 0.888 0.164 -3.5 9.0 0.280 0.884 0.170 -3.5 8.5 0.292 0.879 0.177 -3.5 8.0 0.304 0.874 0.183 -3.5 7.5 0.318 0.868 0.190 -3.5 7.0 0.333 0.861 0.197 -3.5 6.5 0.350 0.854 0.206 -3.5 6.0 0.368 0.847 0.214 -3.5 5.5 0.389 0.838 0.224 -3.5 5.0 0.412 0.829 0.235 -3.5 4.5 0.438 0.818 0.247 -3.5 4.0 0.467 0.806 0.259 -3.5 3.5 0.500 0.792 0.272 -3.5 3.0 0.538 0.776 0.287 -3.5 2.5 0.583 0.757 0.304 -3.5 2.0 0.636 0.735 0.322 -3.5 1.5 0.700 0.709 0.342 -3.5 1.0 0.778 0.676 0.362 -3.5 0.5 0.875 0.636 0.383


3


4

Tablice za odabir armature (ploča, zid)

Razmak Površina presjeka u cm2 na širini ploče od 100 cm

šipaka Promjer šipke u mm

t 6 7 8 10 12 14 16 18 20

7.0 4.04 5.50 7.18 11.22 16.16 21.99 28.73 36.36 44.87

7.5 3.77 5.13 6.70 10.47 15.08 20.52 26.81 33.93 41.88

8.0 3.53 4.81 6.28 9.82 14.14 19.24 25.14 31.81 39.26

8.5 3.33 4.53 5.91 9.24 13.31 18.11 23.66 29.94 36.95

9.0 3.14 4.28 5.59 8.73 12.57 17.10 22.34 28.28 34.90

9.5 2.98 4.05 5.29 8.27 11.90 16.20 21.17 26.79 33.06

10.0 2.83 3.85 5.03 7.85 11.31 15.39 20.11 25.45 31.41

10.5 2.69 3.67 4.79 7.48 10.77 14.66 19.15 24.24 29.91

11.0 2.57 3.50 4.57 7.14 10.28 13.99 18.28 23.14 28.55

11.5 2.46 3.35 4.37 6.83 9.84 13.39 17.49 22.13 27.31

12.0 2.36 3.21 4.19 6.54 9.42 12.83 16.76 21.21 26.17

12.5 2.26 3.08 4.02 6.28 9.05 12.32 16.09 20.36 25.13

13.0 2.17 2.96 3.87 6.04 8.70 11.84 15.47 19.58 24.16

13.5 2.09 2.85 3.72 5.82 8.38 11.40 14.90 18.85 23.27

14.0 2.02 2.75 3.59 5.61 8.08 11.00 14.36 18.18 22.44

14.5 1.95 2.65 3.47 5.42 7.80 10.62 13.87 17.55 21.66

15.0 1.89 2.57 3.35 5.24 7.54 10.26 13.41 16.97 20.94

15.5 1.82 2.48 3.24 5.07 7.30 9.93 12.97 16.42 20.27

16.0 1.77 2.41 3.14 4.91 7.07 9.62 12.57 15.90 19.64

16.5 1.71 2.33 3.05 4.76 6.85 9.33 12.19 15.42 19.04

17.0 1.66 2.26 2.96 4.62 6.65 9.05 11.83 14.97 18.48

17.5 1.62 2.20 2.87 4.49 6.46 8.79 11.49 14.54 17.95

18.0 1.57 2.14 2.79 4.36 6.28 8.55 11.17 14.14 17.46

18.5 1.53 2.08 2.72 4.25 6.11 8.32 10.87 13.76 16.94

19.0 1.49 2.03 2.65 4.13 5.95 8.10 10.58 13.39 16.54

19.5 1.45 1.97 2.58 4.03 5.80 7.89 10.31 13.05 16.11

20.0 1.41 1.92 2.51 3.93 5.65 7.69 10.05 12.72 15.72


5

Tablice za odabir armature ploče ili zida za uobičajene razmake 10, 12.5, 15 i 20 cm.

φ (mm) razmak As 8 20 2.51 8 15 3.35 10 20 3.93 8 12.5 4.02 8 10 5.03 10 15 5.24 12 20 5.65 10 12.5 6.28 12 15 7.54 14 20 7.70 10 10 7.85 12 12.5 9.05 16 20 10.05 14 15 10.26 12 10 11.31 14 12.5 12.32 16 15 13.40 19 20 14.18 14 10 15.39 20 20 15.71 16 12.5 16.08 19 15 18.90 22 20 19.01 16 10 20.11 20 15 20.94 19 12.5 22.68 25 20 24.54 20 12.5 25.13 22 15 25.34 19 10 28.35 22 12.5 30.41 28 20 30.79 20 10 31.42 25 15 32.72 22 10 38.01 25 12.5 39.27 32 20 40.21 28 15 41.05 25 10 49.09 28 12.5 49.26 36 20 50.89 32 15 53.62 28 10 61.58 32 12.5 64.34

36 15 67.86 32 10 80.42 36 12.5 81.43 36 10 101.79


6

Tablice za odabir armature (grede)

Fi(mm) kg/m 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

8 0,405 0,50 1,01 1,51 2,01 2,51 3,02 3,52 4,02 4,52 5,03 5,53 6,03 6,54 7,04 7,54

10 0,634 0,79 1,57 2,36 3,14 3,93 4,71 5,50 6,20 7,07 7,85 8,64 9,42 10,21 11,00 11,78

12 0,911 1,13 2,26 3,39 4,52 5,66 6,79 7,92 9,05 10,18 11,31 12,44 13,57 14,70 15,83 16,97

14 1,242 1,54 3,08 4,62 6,16 7,70 9,24 10,78 12,32 13,86 15,39 16,93 18,47 20,01 21,55 23,09

16 1,621 2,01 4,02 6,03 8,04 10,05 12,06 14,07 16,09 18,10 20,11 22,12 24,13 26,14 28,15 30,16

18 2,170 2,54 5,09 7,63 10,18 12,72 15,27 17,81 20,36 22,90 25,45 27,99 30,54 33,08 35,63 38,17

19 2,288 2,84 5,67 8,51 11,34 14,18 17,01 19,85 22,68 25,52 28,35 31,19 34,02 36,86 39,69 42,53

20 2,536 3,14 6,28 9,43 12,57 15,71 18,85 21,99 25,13 28,27 31,42 34,56 37,70 40,84 43,98 47,12

22 3,058 3,80 7,60 11,40 15,21 19,01 22,81 26,64 30,41 34,21 38,01 41,81 45,62 49,42 53,22 57,02

24 3,652 4,52 9,05 13,57 18,10 22,62 27,14 31,67 36,19 40,72 45,24 49,76 54,29 58,81 63,34 67,86

25 3,951 4,91 9,82 14,73 19,64 24,54 29,45 34,36 39,27 44,18 49,09 54,00 58,90 63,81 68,72 73,63

28 4,956 6,16 12,32 18,47 24,63 30,79 36,95 43,10 49,26 55,42 61,58 67,73 73,88 80,05 86,21 92,36

32 6,474 8,04 16,09 24,13 32,17 40,21 48,26 56,30 64,34 72,38 80,42 88,47 96,50 104,55 112,60 120,64

36 8,200 10,18 20,36 30,54 40,72 50,89 61,07 71,25 81,43 91,61 101,79 111,97 122,15 132,32 142,50 152,68

razmak armature/m 100,00 50,00 33,34 25,00 20,00 16,67 14,30 12,50 11,11 10,00 9,10 8,33 7,70 7,14 6,67


7

Tablice za odabir armature grede.

kom φ (mm) As 2 8 1.01 3 8 1.51 2 10 1.57 4 8 2.01 2 12 2.26 3 10 2.36 5 8 2.51 2 14 3.08 4 10 3.14 3 12 3.39 5 10 3.93 2 16 4.02 4 12 4.52 3 14 4.62 5 12 5.65 2 19 5.67 3 16 6.03 4 14 6.16 2 20 6.28 2 22 7.60 5 14 7.70 4 16 8.04 3 19 8.51 3 20 9.42 2 25 9.82 5 16 10.05 4 19 11.34 3 22 11.40 2 28 12.32 4 20 12.57 5 19 14.18 3 25 14.73 4 22 15.21 5 20 15.71 2 32 16.08 3 28 18.47 5 22 19.01 4 25 19.63 2 36 20.36 3 32 24.13 5 25 24.54 4 28 24.63 3 36 30.54 5 28 30.79 4 32 32.17 5 32 40.21 4 36 40.72 5 36 50.89


8

R mreže

Tip Profili (mm) Razmaci (mm) Dimenzije (m) kg/m2 kg/komR 131 5,0x4,2 150x250 6,00x2,20 1,50 19,80 R 131 5,0x4,6 150x250 6,00x2,20 1,63 21,50 R 139 4,2x4,2 100x250 6,00x2,20 1,55 20,50 R 166 4,6x4,2 100x250 6,00x2,20 1,76 23,30 R 166 4,6x4,6 100x250 6,00x2,20 1,85 24,50 R 188 6,0x4,2 150x250 6,00x2,20 1,96 26,00 R 188 6,0x4,6 150x250 6,00x2,20 2,08 27,50 R 196 5,0x4,2 150x250 6,00x2,20 2,00 26,50 R 226 6,0x4,2 125x250 6,00x2,20 2,27 30,00 R 257 7,0x5,0 150x250 6,00x2,20 2,72 35,80 R 283 6,0x4,6 100x250 6,00x2,20 2,77 36,60 R 283 6,0x5,0 100x250 6,00x2,20 2,88 38,00 R 335 8,0x5,0 150x250 6,00x2,20 3,33 44,00 R 335 8,0x6,0 150x250 6,00x2,20 3,63 48,00 R 385 7,0x5,0 100x250 6,00x2,20 3,68 48,60 R 424 9,0x6,0 150x250 6,00x2,20 4,34 57,30 R 503 8,0x5,0 100x200 6,00x2,20 4,77 63,00 R 503 8,0x5,0 100x250 6,00x2,20 4,58 60,50 R 503 8,0x6,0 100x250 6,00x2,20 4,89 64,60 R 524 10,0x6,0 150x250 6,00x2,15 5,15 68,00 R 636 9,0x6,0 100x250 6,00x2,15 5,95 78,50 R 785 10,0x6,0 100x250 6,00x2,15 7,35 97,00 R 785 10,0x6,0 100x200 6,00x2,20 7,39 97,50

Q mreže

Tip Profili (mm) Razmaci (mm) Dimenzije (m) kg/m2 kg/komQ 069 4,2x4,2 200x200 6,00x2,20 1,10 14,50 Q 131 5,0x5,0 150x150 6,00x2,20 2,12 28,00 Q 139 4,2x4,2 100x100 6,00x2,20 2,20 29,05 Q 166 4,6x4,6 100x100 6,00x2,20 2,64 34,90 Q 188 6,0x6,0 150x150 6,00x2,20 3,06 40,40 Q 196 5,0x5,0 100x100 6,00x2,15 3,07 40,50 Q 226 6,0x6,0 125x125 6,00x2,20 3,63 48,00 Q 257 7,0x7,0 150x150 6,00x2,20 4,16 55,00 Q 283 6,0x6,0 100x100 6,00x2,20 4,48 59,15 Q 335 8,0x8,0 150x150 6,00x2,20 5,45 72,00 Q 385 7,0x7,0 100x100 6,00x2,20 6,10 80,60 Q 424 9,0x9,0 150x150 6,00x2,20 6,81 90,00 Q 503 8,0x8,0 100x100 6,00x2,20 8,03 106,00 Q 524 10,0x10,0 150x150 6,00x2,20 8,40 110,90 Q 636 9,0x9,0 100x100 6,00x2,20 10,08 133,05 Q 785 10,0x10,0 100x100 6,00x2,20 12,46 164,50


9

Tablice za proračun ploča nosivih u dva okomita smjera opterećenih ravnomjerno podijeljenim opterećenjem po cijeloj ploči

y

x

ll

λ = 2x

xmaksx

q lMϕ

= 2y

ymaksy

q lM

ϕ= qx=κ◊q qy=(1-kx)q

______________ ±±±±±±±±±±±±± upeti ležaj ---------------------- slobodno položeni ležaj

Slučaj 1 l j1x D j1y D k1x D

1 2 3 4 5 6 7

0.50 0.55 0.60 0.65 0.70 0.75

0.80 0.85 0.90 0.95 1.00

1.10 1.20 1.30 1.40 1.50

1.60 1.70 1.80 1.90 2.00

169.17 125.10 94.94 75.31 61.60 51.69

43.97 38.29 34.26 30.44 27.43

22.79 19.45 17.02 15.22 13.87

12.88 12.06 11.45 10.97 10.57

8.814 6.031 3.927 2.741 1.983

1.544 1.136 0.807 0.764 0.602

0.464 0.334 0.244 0.180 0.135

0.099 0.082 0.061 0.048 0.040

10.57 11.35 12.30 13.44 14.79 16.35

18.01 20.15 22.36 24.79 27.43

33.37 40.34 48.60 58.45 70.22

84.43 100.77 121.69 143.00 169.17

0.156 0.190 0.228 0.270 0.313

0.331 0.427 0.444 0.486 0.527

0.594 0.697 0.826 0.985 1.176

1.421 1.634 2.092 2.131 2.617

0.0588 0.0838 0.1147 0.1515 0.1936 0.2404

0.2906 0.3430 0.3962 0.4489 0.5000

0.5942 0.6747 0.7407 0.7935 0.8351

0.8666 0.8931 0.9130 0.9287 0.9412

0.0050 0.0062 0.0073 0.0084 0.0093

0.0100 0.0105 0.0106 0.0105 0.0102

0.0094 0.0080 0.0066 0.0053 0.0042

0.0033 0.0025 0.0020 0.0016 0.0012


10


8 9 10 11 12 13 14

ly UVIJEK PARALELNO S UKLIJEŠTENIM RUBOM

0.50 0.55 0.60 0.65 0.70 0.75

0.80 0.85 0.90 0.95 1.00

1.10 1.20 1.30 1.40 1.50

1.60 1.70 1.80 1.90 2.00

140.91 107.37 85.30 70.59 59.24 50.86

44.56 39.70 35.74 32.54 29.93

26.02 23.33 21.43 20.04 19.02

18.30 17.63 17.05 16.67 16.50

6.707 4.414 2.942 2.270 1.676

1.259 0.971 0.792 0.640 0.522

0.391 0.269 0.191 0.138 0.103

0.071 0.067 0.059 0.037 0.021

11.28 12.38 13.70 15.29 17.19 19.41

21.99 24.96 28.37 32.30 36.75

47.58 61.38 78.75 100.28 126.64

158.52 196.69 239.81 295.08 357.03

0.217 0.266 0.320 0.379 0.444

0.516 0.595 0.683 0.786 0.890

1.083 1.381 1.736 2.153 2.636

3.189 3.817 4.312 5.527 6.195

0.1351 0.1862 0.2447 0.3086 0.3751 0.4417

0.5059 0.5661 0.6212 0.6706 0.7143

0.7854 0.8383 0.8772 0.9057 0.9268

0.9425 0.9543 0.9633 0.9702 0.9756

0.0102 0.0117 0.0128 0.0133 0.0133

0.0129 0.0121 0.0110 0.0099 0.0087

0.0071 0.0053 0.0039 0.0029 0.0021

0.0016 0.0012 0.0009 0.0007 0.0005


15 16 17 18 19 20 21

ly UVIJEK PARALELNO S UKLIJEŠTENIM RUBOM

0.50 0.55 0.60 0.65 0.70 0.75

0.80 0.85 0.90 0.95 1.00

1.10 1.20 1.30 1.40 1.50

1.60 1.70 1.80 1.90 2.00

136.06 107.42 87.62 73.76 63.69 56.16

50.42 45.97 42.48 39.70 37.47

34.18 31.93 30.34 29.18 28.31

27.64 27.12 26.71 26.37 26.09

5.728 3.960 2.772 2.014 1.505

1.148 0.891 0.698 0.555 0.446

0.329 0.225 0.159 0.116 0.087

0.067 0.052 0.041 0.034 0.028

12.48 14.10 16.12 18.60 21.16 25.24

29.56 34.66 40.65 47.64 55.74

75.33 101.68 134.65 175.88 226.65

288.36 362.50 450.72 555.49 675.81

0.323 0.404 0.496 0.603 0.725

0.864 1.021 1.199 1.398 1.620

1.959 2.635 3.298 4.123 5.077

6.171 7.414 8.822 10.377 12.132

0.2381 0.3139 0.3932 0.4716 0.5456 0.6127

0.6709 0.7230 0.7664 0.8029 0.8333

0.8798 0.9120 0.9346 0.9505 0.9620

0.9704 0.9766 0.9813 0.9849 0.9877

0.0152 0.0159 0.0157 0.0148 0.0134

0.0116 0.0104 0.0087 0.0073 0.0061

0.0046 0.0032 0.0023 0.0016 0.0012

0.0008 0.0006 0.0005 0.0004 0.0003


11


22 23 24 25 26 27 28

0.50 0.55 0.60 0.65 0.70 0.75

0.80 0.85 0.90 0.95 1.00

1.10 1.20 1.30 1.40 1.50

1.60 1.70 1.80 1.90 2.00

271.75 194.98 145.73 112.92 90.16 73.99

62.18 53.34 46.58 41.52 37.15

31.09 27.01 24.17 22.12 20.62

19.49 18.62 17.95 17.41 16.98

6.707 4.414 2.942 2.270 1.676

1.259 1.768 1.352 1.052 0.833

0.606 0.408 0.285 0.204 0.150

0.113 0.087 0.068 0.053 0.043

16.98 17.84 18.89 20.16 21.65 23.41

25.47 27.84 30.56 33.65 37.15

45.52 56.01 69.02 84.99 104.38

127.72 155.54 188.41 226.93 271.75

0.171 0.209 0.254 0.298 0.353

0.411 0.465 0.543 0.619 0.700

0.837 1.063 1.287 1.596 1.940

2.334 2.782 3.287 3.852 4.882

0.0588 0.0838 0.1147 0.1515 0.1936 0.2404

0.2906 0.3430 0.3962 0.4489 0.5000

0.5942 0.6747 0.7407 0.7935 0.8351

0.8676 0.8931 0.9130 0.9287 0.9412

0.0050 0.0062 0.0073 0.0084 0.0093

0.0100 0.0105 0.0106 0.0105 0.0102

0.0094 0.0080 0.0066 0.0053 0.0042

0.0033 0.0025 0.0020 0.0016 0.0012


29 30 31 32 33 34 35

ly UVIJEK PARALELNO SA SLOBODNO POLOŽENIM RUBOM

0.50 0.55 0.60 0.65 0.70 0.75

0.80 0.85 0.90 0.95 1.00

1.10 1.20 1.30 1.40 1.50

1.60 1.70 1.80 1.90 2.00

246.42 186.97 138.61 110.30 90.65 76.58

66.24 58.46 52.51 47.86 44.18

38.84 35.27 32.79 31.01 29.71

28.73 27.97 27.38 26.92 26.54

11.891 9.671 5.661 3.931 2.814

2.068 1.556 1.191 0.980 0.736

0.535 0.357 0.248 0.178 0.130

0.093 0.075 0.059 0.047 0.038

17.88 19.12 20.68 22.60 24.92 27.69

30.98 34.84 39.35 44.56 50.57

65.30 84.25 108.24 138.11 174.79

219.29 272.66 336.02 410.58 497.61

0.251 0.313 0.384 0.464 0.555

0.658 0.772 0.900 1.043 1.201

1.474 1.895 2.398 2.987 3.669

4.450 5.337 6.337 7.456 8.702

0.1111 0.1547 0.2058 0.2631 0.3244 0.3876

0.4503 0.5108 0.5675 0.6196 0.6667

0.7454 0.8057 0.8510 0.8848 0.9101

0.9291 0.9435 0.9545 0.9631 0.9697

0.0087 0.0102 0.0114 0.0123 0.0126

0.0125 0.0121 0.0114 0.0104 0.0094

0.0079 0.0060 0.0045 0.0038 0.0025

0.0019 0.0014 0.0011 0.0009 0.0007


12


36 37 38 39 40 41 42

0.50 0.55 0.60 0.65 0.70 0.75

0.80 0.85 0.90 0.95 1.00

1.10 1.20 1.30 1.40 1.50

1.60 1.70 1.80 1.90 2.00

436.53 310.15 229.50 175.97 139.24 113.30

94.51 80.60 70.10 62.04 55.74

46.77 40.90 36.89 34.08 32.04

30.54 29.40 28.52 27.75 27.28

25.276 16.130 10.706 7.346 5.189

3.757 2.782 2.100 1.614 1.259

0.897 0.588 0.400 0.282 0.204

0.151 0.114 0.088 0.077 0.047

27.28 28.38 29.74 31.41 33.43 35.85

38.71 42.08 46.00 50.53 55.74

68.48 84.80 105.38 130.92 162.22

200.13 245.53 299.38 362.69 436.53

0.220 0.273 0.334 0.404 0.483

0.573 0.673 0.784 0.907 1.043

1.274 1.632 2.057 2.555 3.130

3.790 4.540 5.385 6.331 7.384

0.0588 0.0838 0.1147 0.1515 0.1936 0.2404

0.2906 0.3430 0.3962 0.4489 0.5000

0.5942 0.6747 0.7407 0.7935 0.8351

0.8676 0.8931 0.9130 0.9287 0.9412

0.0050 0.0062 0.0073 0.0084 0.0093

0.0100 0.0105 0.0106 0.0105 0.0102

0.0094 0.0080 0.0066 0.0053 0.0042

0.0033 0.0025 0.0020 0.0016 0.0012


13


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PRIJENOS OPTEREĆENJA S PLOČE NOSIVE U DVA SMJERA NA GREDE I ZIDOVE Ležajni pritisak pravokutnih ploča na grede ili zidove kontinuirano je promjenljiv oblika parabole. Za potrebe prakse ovo opterećenje zamjenjuje se trapeznim (za dužu stranu ploče) ili trokutnim (za kraću stranu ploče). Grede se radi jednostavnosti proračuna nadalje mogu proračunavati sa zamjenjujućim jednolikim kontinuiranim opterećenjem (prema izrazima danim na slici). Ovim zamjenjujućim opterećenjem dobiju se isti momenti savijanja, ali oko 25% veće poprečne sile.


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Prosta greda:

RA,g=RB,g=VA,g=VB,g = 0.5◊g◊L RA,q=RB,q=VA,q=VB,q = 0.5◊q◊L M1,g= 0.125◊g◊L2 M1,q= 0.125◊g◊L2 MSd=1.35◊Mg+1.5◊Mq

VSd=1.35◊Vg+1.5◊Vq

Prosta greda s jednim prepustom:

( )2 2, , 2A g A g k

gR V L LL

= = ⋅ −⋅

, , 0.5A q A qR V q L= = ⋅ ⋅

( )2, 2B g k

gR L LL

= ⋅ +⋅

( )2, 2B q k

qR L LL

= ⋅ +⋅

( )2 2, , 2B l g k

gV L LL

= ⋅ +⋅

( )2 2, , 2B l q k

qV L LL

= ⋅ +⋅

, ,B d g kV g L= ⋅

, ,B d q kV q L= ⋅

2,

1, 2A g

g

RM

g=

⋅

21, 0.125qM q L= ⋅ ⋅

22, 0.5g kM g L= − ⋅ ⋅

22, 0.5q kM q L= − ⋅ ⋅


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Prosta greda s dva prepusta:

( ),

22

kA g

g L LR

⋅ + ⋅=

( ),

22

kA q

q L LR

⋅ + ⋅=

, ,A l g kV g L= ⋅

, ,A l q kV q L= ⋅

, , , , ,A d g A g A l gV R V= −

, , , , ,A d q A q A l qV R V= −

2 21, 0.125 0.5g kM g L g L= ⋅ ⋅ − ⋅ ⋅

21, 0.125qM q L= ⋅ ⋅

22, 0.5g kM g L= − ⋅ ⋅

22, 0.5q kM q L= − ⋅ ⋅

Kontinuirani nosač preko dva raspona:

A,g A,gR V 0.375 g L= = ⋅ ⋅

A,q A,qR V 0.438 q L= = ⋅ ⋅

B,gR 1.25 g L= ⋅ ⋅

B,qR 1.25 q L= ⋅ ⋅

B,gV 0.625 g L= ⋅ ⋅

B,qV 0.625 q L= ⋅ ⋅

21,gM 0.070 g L= ⋅ ⋅

21,qM 0.096 q L= ⋅ ⋅

2

2,gM 0.125 g L= − ⋅ ⋅ 2

2,qM 0.125 q L= − ⋅ ⋅

04 Tablice-beton Prema EC2

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Transcript of 04 Tablice-beton Prema EC2