A Study on the Reinforcement of Steel Composite Beam Using the External Post-Tensioning Method

외부 후 긴장 공법을 이용한 강합성보의 보강에 관한 연구

  • Received : 2000.08.09
  • Published : 2000.10.27

Abstract

In strengthening structure, the external post-tensioning method which secure clearness in the structure analysis process is adopted to bridges as well as architecture structure. In this study, to investigate the behavior of composite beam in the process of post-tensioning, the amount of prestress force loss, the amount of prestressed compression stress at the lower flange and the behavior of lower flange connected with anchorage are analyzed by comparing the results of finite element analysis with the measured results of installed strain gauges. After finishing the post-tensioning, the strengthening effect of external post-tensioning method is analyzed by static loading test. It is also investigated that the strengthening effect of shear section in the harped external post-tensioning specimens.

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