A PRACTICAL TREATISE ON SUSPENSION BRIDGES

Chapter 1: Stresses in suspension bridges. Section 1: The cable. 1. Form of the cable for any loading. 2. The parabolic cable. 3. Unsymmetrical spans. 4. The catenary. 5. Deformations of the cable. Section 2: Unstiffened suspension bridges. 6. Introduction. 7. Stresses in the cables and towers. 8. Deformations under central loading. 9. Deformations under unsymmetrical loading. 10. Deflections due to elongation of cable. Section 3: Stiffened suspension bridges. 11. Introduction. 12. Assumption used. 13. Fundamental relations. 14. Influences lines. Section 4: Three-hinged stiffening trusses. 15. Analysis. 16. Moments in the stiffening truss. 17. Shears in the stiffening truss. Section 5: Two-hinged stiffening trusses. 18. Determination of the horizontal tension H. 19. Values of H for special cases of loading. 20. Moments in the stiffening truss. 21. Shear in the stiffening truss. 22. Temperature stresses. 23. Deflection of the stiffening truss. 24. Straight backstays. Section 6: Hingeless stiffening trusses. 25. Fundamental relation. 26. Moments at the towers. 27. The horizontal tension H. 28. Values of H for special: cases of loading. 29. Moments in the stiffening truss. 30. Temperatures stresses. 31. Straight backstays. Section 7: Braced-chain suspension bridges. 32. Three- hinged type. 33. Two-hinged type. 34. Hingeless type. Chapter 2: Types and details of construction. 1. Introduction. 2. Various arrangement of suspension spans. 3. Wire cables vs. eyebar chains. 4. Methods of vertical stiffening. 5. Methods of lateral stiffening. 6. Comparison of different types of stiffening truss. 7. Types of braced- chain bridges. 8. Economic proportion for suspension bridges. 9. Arrangements of cross- sections. 10. Materials used in suspension bridges. 11. Wire ropes (for cable and suspenders) 12. Parallel wire cable. 13. Cradling of the cables. 14. Anchoring of the cables. 15. Construction of chains. 16. Suspender connections- (cable bands sockets). 17. Suspension of the roadway. 18. Construction of stiffening trusses. 19. Braced-chain construction. 20. Wind and sway bracing. 21. Towers. 22. Saddles and knuckles. 23. Anchorage's. Chapter 3: Typical design computations. Examples 1: Calculations for two-hinged suspension bridge with straight backstays. 1. Dimension. 2. Stresses in cable. 3. Moments in stiffening truss. 4. Shear in stiffening truss. 5. Wind stresses in bottom chords. Example 2: Calculations for two-hinged suspension bridge with suspended side spans. 1. Dimension. 2. Stresses in cable. 3. Moments in stiffening truss- main span. 4. Bending moments in side spans. 5. Shear in stiffening truss-main span. 6. Shears in side spans. 7. Temperature stresses. 8. Wind stresses. Example 3: Calculations for towers of two-hinged suspension bridge. 1. Dimension. 2. Movement of top of tower. 3. Forces acting on tower. 4. Calculation of stresses. 5. Wind stresses. Example 4: Estimate of cable and wrapping. 1. Calculation of cable wire. 2. Calculation of cable diameter. 3. Calculation of wrapping wire. 4. Estimate of rope strand cable. Example 5: Analysis of suspension bridge with continuous stiffening truss. 1. Dimension. 2. Stresses in cables. 3. Influences line for H. 4. Bending moments in main span. 5. Shear in main span. 6. Bending moments in side spans. 7. Shear in side spans. Examples 6: Design of anchorage. 1. Stability against sliding. 2. Stability against tilting. Chapter 4: Erection of suspension bridges. 1. Introduction. 2. Erection of the tower. 3. Stringing the footbridge cables. 4. Erection of footings. 5. Parallel wire cable. 6. Initial erection adjustments. 7. Spinning of the cables. 8. Compacting the cables. 9. Placing cable bands and suspenders. 10. Erection of trusses and floor system. 11. Final erection adjustments. 12. Cable wrapping . 13. Erection of wide-rope cables. 14. Erection of eye-bar chain bridges. 15. Time required for erection.

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