Residual seismic capacity evaluation of overall weak-beam RC frame based on energy absorption capacity

Chunri Quan, Noriyuki Takahashi, Ho Choi, Yoshiaki Nakano

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, residual seismic capacity ratio of overall frame, which means the reduction degree of seismic safety margin until the safety limitation of frame, is proposed for the weak-beam RC frame based on energy absorption capacity (exact calculation method). The feature sections, which assume the damage ranks such as slight, minor, moderate, severe and collapse, are then defined based on the engineering demand parameter. The relationship between residual seismic capacity ratio of overall frame and feature sections is also discussed to determine the threshold value of residual seismic capacity ratio of overall frame. The simplified calculation method for residual seismic capacity ratio of overall frame is furthermore proposed employing for the damage information, such as maximum residual crack width of members, obtained at on-site. The simplified calculation method for residual seismic capacity ratio of overall frame is finally applied to the previous test results of two weak-beam RC frames, and its feasibility is discussed. As a result, the damage ranks of 2SH-64 specimen are found similar to each other estimated based on the exact and simplified calculation melhod. The damage ranks of 1SF specimen are however overestimated by the simplified calculation method.

Original languageEnglish
Pages (from-to)1931-1938
Number of pages8
JournalJournal of Structural and Construction Engineering
Volume78
Issue number693
DOIs
Publication statusPublished - 2013 Nov

Keywords

  • Damage rank
  • Energy absorption capacity
  • RC frame
  • Residual seismic capacity evaluation
  • Residual seismic capacity ratio of overall frame

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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