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Response Modification Factors of Non-seismic School Buildings Considering Short Column Effects and Natural Period

단주효과 및 고유주기를 고려한 비내진 학교시설의 반응 수정계수

Kim, Beom Seok;Park, Ji-Hun
김범석;박지훈

  • Received : 2019.02.26
  • Accepted : 2019.05.03
  • Published : 2019.07.01

Abstract

Response modification factors of school facilities for non-seismic RC moment frames with partial masonry infills in 'Manual for Seismic Performance Evaluation and Retrofit of School Facilities' published in 2018 were investigated in the preceding study. However, since previous studies are based on 2D frame analysis and limited analysis conditions, additional verification needs to be performed to further apply various conditions including orthogonal effect of seismic load. Therefore, this study is to select appropriate response modification factors of school facilities for non-seismic RC moment frames with partial masonry infills by 3D frame analysis. The results are as follows. An appropriate response modification factor for non-seismic RC moment frames with partial masonry infills is proposed as 2.5 for all cases if the period is longer than 0.6 seconds. Also if the period is less than 0.4 seconds and the ratio of shear-controlled columns is less than 30%, 2.5 is chosen too. However, if the period is less than 0.4 seconds and the ratio of shear-controlled columns is higher than 30%, the response modification factor shall be reduced to 2.0. If the period is between 0.4 and 0.6 seconds, then linearly interpolates the response correction factor.

Keywords

Non-seismic school buildings;Seismic performance evaluation;Response modification factor;Partial masonry infill

Acknowledgement

Supported by : 한국연구재단