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| body | --uriencoded--$$ \normalsize \text %7B(a) When %7D \frac%7BP_r%7D%7BP_c%7D \geq 0.2 \\ \qquad \qquad \qquad \qquad \frac%7BP_r%7D%7BP_c%7D + \frac%7B8%7D%7B9%7D \left ( \frac%7BM_%7Brx%7D%7D%7BM_%7Bcx%7D%7D + \frac%7BM_%7Bry%7D%7D%7BM_%7Bcy%7D%7D \right ) \leq 1.0 & \qquad \qquad \qquad \qquad \qquad \quad \qquad \qquad \qquad \qquad \qquad (H1-1a) \\ \text %7B(b) When %7D \frac%7BP_r%7D%7BP_c%7D < 0.2 \\ \qquad \qquad \qquad \qquad \frac%7BP_r%7D%7B2P_c%7D + \left ( \frac%7BM_%7Brx%7D%7D%7BM_%7Bcx%7D%7D + \frac%7BM_%7Bry%7D%7D%7BM_%7Bcy%7D%7D \right ) \leq 1.0 & \qquad \qquad \qquad \qquad \qquad \quad \qquad \qquad \qquad \qquad \qquad (H1-1b) $$ |
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Gövde Burkulması Kontrolü
Gövdeye Etkiyen Kuvvetler
Petek kiriş boşluklarının arasında kalan dolu gövdeli bölümün üst ve alt sınırına gelen eğilme momenti değerleri bulunur ve dikdörtgen kesite göre yanal burulma burkulması kontrolü yapılır.
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Petek kiriş boşluklarının arasında kalan dolu gövdeli bölüm AISC 360-10 bölüm F11 ve TÇY bölüm 9.11 e göre hesaplanmaktadır.
1. Yielding
For rectangular bars with
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| body | --uriencoded--$$ \normalsize \frac %7BL_b d%7D%7Bt%5e2%7D \leq \frac %7B0.08 E%7D%7BF_y%7D $$ |
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bent about their major axis, rectangular bars bent about their minor axis and rounds:| Mathinline |
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| body | --uriencoded--$$ \normalsize \qquad \qquad \qquad \qquad M_n = M_%7Bp%7D = F_yZ \leq 1.6M_y & \qquad \qquad \qquad \qquad \qquad \quad \qquad \qquad \qquad \qquad \qquad (F11-1) $$ |
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2. Lateral-Torsional Buckling
(a) For rectangular bars with
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| body | --uriencoded--$$ \normalsize \frac %7B0.08 E%7D%7BF_y%7D < \frac %7BL_b d%7D%7Bt%5e2%7D \leq \frac %7B1.9E%7D%7BF_y%7D $$ |
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bent about their major axis:| Mathinline |
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| body | --uriencoded--$$ \normalsize \qquad \qquad \qquad \qquad M_n = C_%7Bb%7D = \left [ 1.52-0.274 \left( \frac%7BL_bd%7D%7Bt%5e2%7D\right) \frac%7BF_y%7D%7BE%7D \right ] M_y \leq M_p & \qquad \qquad \qquad \qquad \qquad \qquad \; (F11-2) $$ |
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(b) For rectangular bars with
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| body | --uriencoded--$$ \normalsize \frac %7BL_b d%7D%7Bt%5e2%7D > \frac %7B1.9E%7D%7BF_y%7D $$ |
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bent about their major axis:| Mathinline |
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| body | --uriencoded--$$ \normalsize \qquad \qquad \qquad \qquad M_n = F_%7Bcr%7D S_x \leq M_p & \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \; (F11-3) \\ \text %7Bwhere%7D \\ \qquad F_%7Bcr%7D = \frac%7B1.9EC_b%7D%7B\frac%7BL_bd%7D%7Bt%5e2%7D%7D & \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \; (F11-4) $$ |
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Lb = length between points that are either braced against lateral displacement of the compression region, or between points braced to prevent twist of the cross section, in. (mm)
d = depth of rectangular bar, in. (mm)
t = width of rectangular bar parallel to axis of bending, in. (mm)