Dynamic Target Surveying

This article describes how automatic surveying technology was used in two bridge construction and monitoring projects in China. The first project was the Lu Pu suspension bridge, which is the longest arch bridge in the world. Installing the final three connectors in the middle of the bridge presented a special challenge because of the swing, torsion and deformation of the iron-structured connectors. During the assembly surveying, automated laser total stations with automatic target recognition were used to obtain precise, real-time coordinates of reflector targets mounted on the connectors. The swing range between the two connecting parts of the bridge also made traditional surveying methods unworkable, so a remote method of surveying and calculating the dimensions of the linking section was developed. In the second project, automatic surveying technology is being used to make deformation measurements on the Yang Pu suspension bridge. The monitoring system consists of two sets of automated total stations, each controlled by a personal computer. Circular prisms were affixed to the bridge structure and a total of 148 cycles of measurements were recorded and are being used to measure deflection and elongation.

  • Authors:
    • James, Howard
  • Publication Date: 2005-3

Language

  • English

Media Info

  • Media Type: Print
  • Features: Photos;
  • Pagination: pp 14-15
  • Serial:
    • Bridges
    • Volume: 8
    • Issue Number: 2
    • Publisher: ZweigWhite

Subject/Index Terms

Filing Info

  • Accession Number: 01002279
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 21 2005 10:50AM