TRAIL SUSPENSION BRIDGE
CE 72503
Course Objectives:

  • To introduce trail suspension bridge
  • To make capable to plan, analyse, design and construct trail suspension bridge
  • Introduction
    (2 hours)
    • Historical Background
    • Trail Bridge in Nepal
    • Classification of Trail Bridges and their Components
  • Essential Data for Design and their Acquisition
    (6 hours)
    • Essential Data for Design
    • Socio-Economic Study
    • Topographic Study and Engineering Survey
    • Geological and Geotechnical Study
  • Design of Trail Suspension Bridge
    (26 hours)
    • Cable
      • Introduction to Cable and its Specifications
      • Cable Geometry and its Analytical Presentation
      • Deformation of Cable and its Calculation
      • Nonlinear Analysis of Extensible Cable
    • Design of Main Cable Structure
      • Cable Structure Design of Suspended Bridges
      • Cable Structure Design of Suspension Bridges
    • Design of Wind Bracing Structure
      • Wind Guy Cable Arrangement
      • Design of Wind Guy Structure
    • Design of Suspenders/Hangers
    • Design of Towers
    • Design of Tower Foundation and Cable Anchorage
    • Design Calculation of Trail Suspension Bridge by Computer
  • Estimating and Costing
    (2 hours)
    • Rate Analysis
    • Cost Estimate
  • Construction of Trail Suspension Bridge
    (9 hours)
    • Construction Planning
    • Setting Out of the Bridge
    • Transportation, Handling and Hoisting of Cable
    • Fabrication and Erection/Construction of Bridge
    • Test Operation and Commissioning
    • Maintenance of Bridge

Tutorial:

  • Design Exercise on Cable Structure of N and D Type Bridges(8 hours)
  • Design Exercise on Tower(4 hours)
  • Design Exercise on Tower Foundation and Cable Anchorage(3 hours)

Practical:

  • Practical of the course consists of a minor project work and field work.
  • Every individual student is assigned with a minor project work on design of D / N type Trail Bridge and student has to defend the project work at the end of academic semester.
  • One day field visit to bridge sites is organised. Student has to submit a visit report.

References:

  • Survey, Design and Construction of Trail Suspension Bridges for Remote Areas
    • Volume A: Design, F. Grob, J. Krahenbi.lhl, A. Wagner
    • Volume B: Survey, J. Krahenbuhl, A. Wagner
    • Volume C: Standard Design Drawings, C. B. Basnet, J. Krahenbuhl
    • Volume D: Execution of Construction Works, D. Panciotto
    • Volume E: Costing and Contracting, J. Krahenbuhl
  • Trail Suspension Bridges (Course Manual), SBD, DOR & IOE
  • Short-span Trail Bridge Standard, Technical Handbook, Trail Bridge Section, GoN

Evaluation Scheme:
The questions will cover all the chapters in the syllabus. The evaluation scheme will be as indicated in the table below:

Chapter

Hours

Marks Distribution*

1

2

6

2

6

12

3

26

40

4

2

6

5

9

16

Total

45

80

*There could be minor deviation in mark distribution.

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