leyes de variación de un pórtico para la grafica de cortante y de momento flector
Grfico de reacciones X Tramo AB = 0
1000 = 0
= 1000 ( ) = 0+ 1000 = 0 = 1000 = 0 = 1000 = 2 = 1000 = 0 = 0 =
2 = 2000 X Tramo BC
= 0
+4975 1900 = 0
= 4975 1900 ( ) = 0+ 4975 +1000(2) +1900 (
2) + = 0 = 9502+4975 2000 = 0 = 4975 = 3 =725 = 0 = 2000 = 3 =
4375 = 0 = 4975 1900 = 0 = 2.618421
=950(2.618421)2+4975(2.618421) 2000
= 4513.322
X Tramo CD
= 0
1000 = 0
= 1000 ( ) = 0+ 1000( +2) 4975(3) +1900 3(32) = 0 = 1000
4375
= 0 = 1000 = 2 = 1000 = 0 = 4375 = 2 = 2375 X Kg/m Tramo CD
= 0
1000 +1000 = 0
= 0 ( ) = 0+ 1000(2 +2 +) 4975(3) +1900 3(32) 1000 = 0 = 2375 =
0 = 0 = 1 = 0 = 0 = 2375 = 1 = 2375 X Tramo FE
= 0
1000 +3525 900 2 = 0
= 725 ( ) = 0+ 1000() +3525(2 +) 900 2(22+2 +) = 0 = 725 +1650 =
0 = 725 = 1 =725 = 0 = 1650 = 1 = 2375 X Tramo GF
= 0
+3525 900 2 = 0
= 1725 ( ) = 0+ 3525() 900 2(22+) = 0 = 1725 1800 = 0 = 1725 = 2
=1725 = 0 = 1800 = 2 = 1650 X Tramo HG
= 0
900 = 0
= 900 ( ) = 0+ 900 (
2) = 0 = 4502
= 0 = 0 = 2 =1800 = 0 = 0 = 2 = 1800
