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Seismic Performance Evaluation of Existing Low-rise RC Frames with Non-seismic Detail

비내진상세를 가지는 기존 저층 철근콘크리트 골조의 내진거동평가

  • Received : 2012.12.18
  • Accepted : 2013.02.20
  • Published : 2013.05.02

Abstract

In this paper, the a static experiment of on two reinforced concrete (RC) frame sub-assemblages was conducted to evaluate the seismic behaviors of existing RC frames that were not designed to support a seismic load. The specimens were a one span and actual-sized. One of them had two columns with the same stiffness, but the other had two columns with different stiffness values. As Regarding the test results, lots of many cracks occurred on the surfaces of the columns and beam-column joints for the two specimens, but the cover concrete splitting hardly occurred was minimal until the test ends. In the case of the specimen with the same stiffness offor the two columns, the flexural collapse of the left-side column occurred. However, in the case of the specimen with different stiffness values for of the two columns, the beam-column joint finally collapsed, even though the shear strength of the joint was designed to be strong enough to support the lateral collapse load. The nonlinear Nonlinear static analysis of the two specimens was also conducted using the uniaxial spring model, and the analytical results successfully simulated the nonlinear behaviour of the specimens in accordance with the test results.

Keywords

Reinforced concrete;Non-seismic details;Seismic behaviour;Beam-column joint

Acknowledgement

Supported by : 부산대학교

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