Structural behavior of a long-span partially earth-anchored cable-stayed bridge during installation of a key segment by thermal prestressing

Sang Hyo Kim, Jeong Hun Won

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This study investigated structural behavior of long-span partially earth-anchored cable-stayed bridges with a main span length of 810 m that use a new key segment closing method based on a thermal prestressing technique. A detailed construction sequence analysis matched with the free cantilever method (FCM) was performed using a three-dimensional finite element (FE) model of a partially earth-anchored cable-stayed bridge. The new method offers an effective way of connecting key segments by avoiding large movements resulting from the removal of the longitudinal restraint owing to the asymmetry of axial forces in the girders near the pylons. The new method develops new member forces through the process of heating the cantilever system before installing the key segment and cooling the system continuously after installing key segments. The resulting forces developed by the thermal process enhance the structural behavior of partially earth-anchored cable-stayed bridges owing to decreased axial forces in the girders.

Original languageEnglish
Article number231
JournalApplied Sciences (Switzerland)
Volume6
Issue number8
DOIs
Publication statusPublished - 2016 Aug 17

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Fingerprint Dive into the research topics of 'Structural behavior of a long-span partially earth-anchored cable-stayed bridge during installation of a key segment by thermal prestressing'. Together they form a unique fingerprint.

Cite this