{"id":19516,"date":"2025-01-26T06:20:05","date_gmt":"2025-01-26T06:20:05","guid":{"rendered":"http:\/\/141.23.68.248\/wp\/?page_id=19516"},"modified":"2025-02-07T15:20:55","modified_gmt":"2025-02-07T15:20:55","slug":"parametric-model-suspension-bridge","status":"publish","type":"page","link":"http:\/\/141.23.68.248\/wp\/?page_id=19516","title":{"rendered":"Parametric Model: Suspension Bridge"},"content":{"rendered":"

Design Challenge:<\/b><\/h3>\n

The design challenge is to create a parametric model of a cable-stayed bridge, ensuring that the number of cables and the spacing between the crossbeams are perfectly aligned with the length of the bridge.<\/span><\/h3>\n

Parameters:<\/b>
\n<\/b>The user can adjust the following parameters:<\/span><\/h3>\n\n\n\n\n\n\n\n\n\n\n\n
Input Parameter<\/span><\/td>\n\u00a0 \u00a0 \u00a0 \u00a0 <\/span> Unit<\/span><\/td>\n\n

Range<\/span><\/p>\n<\/td>\n<\/tr>\n

Ratio Outer Field Inner Field<\/span><\/td>\ndouble<\/span><\/td>\n0.3…0.5<\/span>\u00a0<\/span><\/td>\n<\/tr>\n
Length of the bridge<\/span><\/td>\ndouble<\/span><\/td>\n–<\/span><\/td>\n<\/tr>\n
Pylon Ratio H\/L<\/span><\/td>\ndouble<\/span>\u00a0<\/span><\/td>\n1\/5…1\/4<\/span><\/td>\n<\/tr>\n
Pylon height under superstructure<\/span><\/td>\ndouble<\/span>\u00a0<\/span><\/td>\n–<\/span><\/td>\n<\/tr>\n
Number of Carlanes<\/span>\u00a0<\/span><\/td>\ninteger<\/span><\/td>\n0…3<\/span><\/td>\n<\/tr>\n
Pedestrian lane?<\/span><\/td>\nboolean<\/span><\/td>\n–<\/span><\/td>\n<\/tr>\n
Bicycle lane?<\/span><\/td>\nboolean<\/span><\/td>\n–<\/span><\/td>\n<\/tr>\n
SuspensionCablesMainField<\/span><\/td>\ninteger<\/span><\/td>\n–<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n

High Performance Criteria:<\/b><\/h3>\n

The model can independently determine a sensible spacing of the crossbeams in the main and side spans.<\/span>
\n<\/span>Additionally, the program can provide feedback on whether the number of cables in the main span has been chosen appropriately.<\/span><\/p>\n

The model also incorporates the High-Performance Criteria, which ensures that, based on the selected number of traffic lanes, bicycle and pedestrian paths, and the calculated spacing between the crossbeams, it independently computes a structurally sound height for the crossbeams.<\/span><\/p>\n

As an additional output, it also provides the traffic loads per running meter.<\/span><\/p>\n

3 Design alternatives<\/b><\/h3>\n

Combined Pedestrian and Street Bridge<\/b><\/h4>\n

The first option is a 700 metre long bridge with 2 lanes, cycle paths and footpaths. The ratio of the outer spans is 0.4. A number of cables between 26 and 38 is recommended for this alternative. Due to the parameterisation, however, 27 cables would create too great a distance in the outer fields, so 28 cables were selected here. The height of the cross members is 3 metres.<\/span><\/p>\n