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ID number:491936
 
Author:
Evaluation:
Published: 22.12.2010.
Language: Latvian
Level: College/University
Literature: n/a
References: Not used
Extract

Darba mērķis: Noteikt zīmējumā parādītajai sijai nepieciešamo šķērsgriezumu (t.i., velmēta tērauda profila numuru), izejot no sijas stiprības un stinguma prasībām. Aprēķinu veikt tērauda elastīga darba apgabalā.
Aprēķini:
Mmax= q* L2/8= (67*6.12)/8=311.63 (kN*m); Wcal­=Mmax/ Ryγc
Ry= 240 MPa (pēc CHuП ll-23-81* 1. pielukma 51. Tabulas)
Tā kā nav doti konstrukcijas darbības apstākļi, pieņēmu ka γc=1 (pēc CHuП ll-23-81* 6 tabulas.
Wcal­=311.63 / 240*1= 31163kN*cm / 24kN/cm2=1298.46cm3
Pieņēmu: l 50 (ГОСТ 8239-72)
Ix= 39 727 cm4; W­x=1589 cm3 ; E= 2.06* 105 MPa= 2.06*104 kN/cm2…

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