Design of cable stay pedestrian footbridge: SH18 Hobsonville Deviation and SH16 Brigham Creek extension

Architectural urban design is becoming an important aspect in the majority of roading projects as non price attributes such as the urban design are ranked highly in the assessment of tenders. This was the case for the assessment of SH18 Hobsonville deviation and SH 16 Brigham Creek extension in which the urban design was ranked highly. Architecturally designed footbridges present many challenges to the structural engineer these challenges include creating a structure that fit with in the environment while meeting the strength requirements under loadings such as crowd loading, seismic, wind loads and collision loading while staying within the required slender forms of the architectural design. These forms also create serviceability issues not usually considered in structures carrying traffic these include dynamic excitation from pedestrian foot impact load and wind loading. Durability also becomes an issue because of the more extensive use of structural steel in place of New Zealand's commonly used materials of prestressed and reinforced concrete. This paper presents how these challenges were calculated and overcome in the design of the cable stay footbridge located at Clarks Lane. (a) For the covering entry of this conference, please see IRRD abstract no. E218160.

Language

  • English

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Filing Info

  • Accession Number: 01143984
  • Record Type: Publication
  • Source Agency: TRL
  • Files: ITRD, ATRI
  • Created Date: Nov 16 2009 12:18PM