. Sollecitazioni nelle strutture ferroviarie sulle curve . Truss Truss Truss binario interno bd -330,700 -407,900 -293,800 df 435,900 -548,600 -382,500 AC + 199 ,600 +241,700 + 181,300 CE +412,100 +513,400 + 360 ,900 AB -336,900 -408.000 -305,900 BC + 254,300 +319,3900 + 219 -23.400 -155 -1500 -155 -1500 183 +400 121,600 104,900 EF - 70,000 - 85,300 - 63,300 FG + 33,400 + 38,500 + 32,500 GH - 8,500 - 9 ,200 - 9 94,600 BB + 97,800 +102,800 + 94,600 DD + 78,800 +121,800 + 14 Art. . Sollecitazioni nel sistema laterale.è stato mostrato prima che la forza centrifuga causesa orizzonte

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. Stresses in railway structures on curves . Track Member Straight Out er Inner Track Truss Truss bd -330, 700 -407, 900 -293, 800 df 435, 900 -548, 600 -382, 500 AC + 199 , 600 +241, 700 + 181, 300 CE +412, 100 +513, 400 + 360 , 900 Ab -336, 900 -408, 000 -305, 900 bC + 254, 300 +319, 900 + 219 , 900 Gd -183, IOC -233, 100 -155 , 400 dE + 121, 600 +153, 000 + 104, 900 Ef - 70, 000 - 85, 300 - 63, 300 fG + 33, 400 + 38, 500 + 32, 500 Gh - 8, 500 - 9 , 200 - 9 , 000 bB + 94, 600 +102, 800 + 97, 800 dD + 94, 600 +121, 800 + 78, 800 Art. 14. Stresses in Lateral System.It has been shown before that the centrifugal force causesa horizontal force which is to be carried by the lateral system. Forsimplicity, we shall assume that the horizontal force is applied atthe panel points of the outer truss only. The assumption as to thedistribution oi the horizontal force between the panel points of theouter and inner trusses has no effect upon the stresses in the chordsand diagonals, except those in the struts (the floor-beams). Fig.34 shows the lateral system and the forces acting.. Fig. 34. According to the usual assumption, the diagonals will heconsidered to take tensions only. In Fig. 35 (a) and (h) are shownthe diagonals which are in action for maximum moments at the panelpoints and maximum shears in the panels respectively for a train go-ing from right to left. f c I e 1 L J N N A 3 C 3> f f <r H K V i V U 6i 7~ratr? 7* v T ■ 1 ■ A 8 C £ P f H K Fig. 35. Since the centrifugal force at any point is equal to qtimes the total vertical load at that point, it follows that theshears in the panels and the moments at the panel points in the lat-eral truss due to the horizontal force [- centrifugal forcej are 87 respectively equal to 2q times the shears and moments in one verticaltruss (for straight track and central loading) due to the verticalload. The shears and moments in the vertical truss for straighttrack have already been found and shown in Table 6 and Table 8 re-spectively. The shears and moments in the

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