Loads and Forces on Steel Railway Bridges - Design of Modern Steel Railway Bridges - page 114

(a) (b)

H B H B H B

H B

LF

LF LF LF

Floorbeam

Floorbeam

Stringer Stringer

FIGURE 4.14 Plan of the floor system (a) without traction bracing and (b) with an additional
member (dashed line) to create traction bracing.

LF LF

3

1

1 2

H B H B

FIGURE 4.15 Traction frame truss for a single track span with two stringers per track.

Centerline of track

CF A

A

CF A

CF A

A

8 '

A

A

CF A

2.5 '

Centerline
of rail

2.5 '

Elevation Plan

FIGURE 4.16 Centrifugal forces from a curved track.