"e3y" - 1 õppematerjal

Kivikonstruktsioonid projekt

Inertsmomendid th 33 I1z = I2z = I3z= I4z = = 0,51×15,503/12 = 158,3 m4, 12 th 34 I5y = = 0,51×11,263/12 = 60,67 m4. 12 I6y = 0,51×6,03/12 = 9,18 m4. I7y = 0,51×6,03/12 = 9,18 m4. I8y = 0,51×27,263/12 = 860,9 m4. I9y = 0,51×56,523/12 = 7673,5 m4. Kaugused e1z = 28,0 m, e2z = 4,0 m, e3z = -12,0 m, e4z = -28,0 m, e1y = e2y = e3y = e4y =0 m, e5y = - 8,0 m, e6y = - 8,0 m, e7y = - 8,0 m, e8y = - 8,0 m, e9y = 8,0 m, Väändetsentri kaugus y ­ teljest ez = 158,26×(28,0 + 4,0-12,0-28,0)/(4*158,26)= -2,0 m, Väändetsentri kaugus z ­ teljest on sümmeetria tõttu ey = 0. Väändeinertsimoment (1.8) 2 n ( 2 Bv = z i B iz + y i B iy , i =1 ) Koostas N.N 2011 15