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ID number:170458
 
Author:
Evaluation:
Published: 08.05.2009.
Language: Latvian
Level: College/University
Literature: n/a
References: Not used
Extract

Sastādot momentu līdzsvara vienādojumu pret punktu A, nosakām reakciju VB:
MA= q*1*4.5- VB*3+q*1.5*0.75+1*P-q*1*0.5-m=0
MA=4*1*4.5-VB*3+4*1.5*0.75+1*10-4*1*0.5-5=0
10+18-3 VB+4.5-2-5=0
3 VB=25.5
VB=8.5 kN
Sastādot projekciju vienādojumu uz vertikālu asi:
VA+ VB-q*1-P-q*2.5=0
VA+ VB-4*1-10-4*2.5=0
VA=-8.5+24=15.5 kN
Sadalām siju posmos tā, lai katra posma robežās iekšējās piepūles mainītos pēc viena noteikta likuma. Dotajai sijai jāapskata 6 posmi:
Šķērsspēku epīras konstruēšana:
Q1-= -q*1 (izkliedētā slodze 4kNm)
Q1-= -4*1= -4 kN
Q1+= -q*1+ VA (pievienojas balsta reakcija VA=15.5 kN)
Q1+= -4*1+15.5=11.5 kN
Q2-= -q*2+ VA (turpina darboties izkliedētā slodze un balsta reakcija)
Q2-= -4*2+15.5=7.5 kN
Q2+= -q*2+ VA –P (pievienojas spēks P=10kN).…

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