내진보강을 위한 손상유도형 PC 끼움벽의 구조성능 (Structural Performance of Precast Infill Walls as a Damage-Fuse Element for Seismic Retrofit)

서지정보

· 발행기관 : 대한건축학회
· 수록지 정보 : 대한건축학회논문집 구조계 / 25권 / 3호 / 43 ~ 50페이지
· 저자명 : 김선우, 윤현도, 장용헌

초록

Infilled frames have been investigated experimentally and theoretically by many researchers during last decades. It is noted
that frame structures incorporating infill walls have shown definite economic and performance advantages over conventional rigid
frame structures, especially when the structures are required to resist large lateral loads due to earthquake ground motion.
However, there are a number of complicated failure mechanisms that can be caused by the frame-walls interaction. The
reinforced concrete (RC) infill itself may fail in a variety of ways, most often involving some combinations of bed joint sliding,
corner crushing, and diagonal cracking. Flexible frames on their own offer little resistance to lateral forces, resulting often in
large deflections and rotations at the joints. On the other hand, walls subjected to lateral loads fail mainly in shear at relatively
small displacements. Therefore, when the frames and wall act together, the combined action of the composite system differs
significantly from that of the frame or wall alone. Strain-hardening cement composites (SHCC) are a class of high ductile
fiber-reinforced cementitious composites developed for applications in the sensitive construction industry. The SHCC have
undergone major evolution in both materials development and the range of emerging applications. The objective of the study is
to evaluate infill wall system with particular attention to understanding the seismic response including failure mechanism and
behavior of infill wall elements. The experimental investigation consisted of a cyclic loading tests on 1/3-scale models of infill
panels. Material ductility and web panel reinforcement details were main variables in the experiment. The experimental results, as
expected, show that the multiple crack pattern, strength, ductility and energy dissipation capacity are superior for SHCC infill
wall due to bridging of fibers and stress redistribution in cement matrix.

영어초록

Infilled frames have been investigated experimentally and theoretically by many researchers during last decades. It is noted
that frame structures incorporating infill walls have shown definite economic and performance advantages over conventional rigid
frame structures, especially when the structures are required to resist large lateral loads due to earthquake ground motion.
However, there are a number of complicated failure mechanisms that can be caused by the frame-walls interaction. The
reinforced concrete (RC) infill itself may fail in a variety of ways, most often involving some combinations of bed joint sliding,
corner crushing, and diagonal cracking. Flexible frames on their own offer little resistance to lateral forces, resulting often in
large deflections and rotations at the joints. On the other hand, walls subjected to lateral loads fail mainly in shear at relatively
small displacements. Therefore, when the frames and wall act together, the combined action of the composite system differs
significantly from that of the frame or wall alone. Strain-hardening cement composites (SHCC) are a class of high ductile
fiber-reinforced cementitious composites developed for applications in the sensitive construction industry. The SHCC have
undergone major evolution in both materials development and the range of emerging applications. The objective of the study is
to evaluate infill wall system with particular attention to understanding the seismic response including failure mechanism and
behavior of infill wall elements. The experimental investigation consisted of a cyclic loading tests on 1/3-scale models of infill
panels. Material ductility and web panel reinforcement details were main variables in the experiment. The experimental results, as
expected, show that the multiple crack pattern, strength, ductility and energy dissipation capacity are superior for SHCC infill
wall due to bridging of fibers and stress redistribution in cement matrix.

참고자료

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