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커플링 보의 접합방식에 따른 복합 벽체 시스템에 관한 연구
윤현도 ( Yun Hyun-do ),박완신 ( Park Wan-shin ),한병찬 ( Han Byung-chan ),윤여진 ( Yun Yeo-jin ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 논문집 Vol.7 No.4
철근콘크리트 코어 벽체와 외부 철골골조로 구성된 복합벽체시스템은 중앙 코아 전단벽 주변의 오픈공간을 갖는다. 이와 같은 복합 벽체시스템은 연결된 벽체가 대부분의 횡하중에 저항하고 벽체저면과 커플링 보에서 대부분의 에너지를 소산할 수 있는 설계기법을 개발하는 것이 필요하다. 본 연구논문은 커플링 보의 접합방식 및 층규모를 주변수로 수직하중 및 풍하중과 지진하중을 받는 복합 벽체시스템에 대하여 전단력, 전도모멘트, 최대 횡변위, 층간변위비 및 동적특성을 규명하였다. The Hybrid Wall System(HWS) building composed of center core reinforced concrete walls and exterior steel frame has open space around the center core walls. It is necessary to develop design methodologies for the HWS building that the coupled shear walls withstand the most of lateral load and expect the most energy dissipation at the coupling beams and at wall foots. Major factors considered in this paper are connection type of coupling beams and scale of story. The studies of the system are investigated in terms of shear force, overturning moment, maximum lateral displacement, story drift ratio, and dynamical characteristics under the action of vertical and lateral forces such as wind and seismic loads.
커플링 정도와 상세에 따른 병렬 전단벽의 내진거동 비교
윤현도 ( Yun Hyun-do ),박완신 ( Park Wan-shin ),이주화 ( Lee Joo-hwa ),박희연 ( Park Hee-yeon ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
In high multistory, reinforced concrete buildings, coupled shear walls(CSWs) can provide an efficient structural system to resist horizontal forces due to wind and seismic effects. Behavior of these structures depend on degree of coupling and details of coupling beam. This paper composed of two subjects. First subject is a verification of proposed statistical regression formula for evaluation of the degree of coupling and determination of fundamental periods of CSWS by Chaallal et al. Second subject is a comparison of elastic behavior and nonlinear seismic behavior of fully coupled shear wall and partially coupled shear wall for Details and Degree of coupling. This paper used IDARC-2D and Midas Gen 4.3.1 for the purpose of achievement these subjects. Analysis results shows that statistical regression formula by Chaallal revise a little. Elastic and nonlinear seismic analytical result shows that steel coupling beam and diagonally reinforced concrete coupling beam have good behavior. Also, fully coupled shear wall have good behavior than partially coupled shear wall.
아웃케이블 공법을 적용한 프리스트레싱 도입 철근콘크리트 슬래브의 휨보강 성능
윤현도 ( Yun Hyun-do ),박완신 ( Park Wan-snin ),한병찬 ( Han Byung-chan ),황선경 ( Hwang Sun-kyoung ),임재형 ( Lim Jae-hyung ),문정호 ( Moon Jeong-ho ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
A strengthening technique for reinforced concrete beams using external unbonded reinforcement offers advantages in speed and simplicity of installation over other, established, strengthening techniques. The purpose of this paper is to investigate the capabilities of a new retrofitting technique, namely external prestressing, for flexural strengthening of beams. The paper provides a general description of structural behavior of beams strengthened using the technique. The variable in the test program was retrofitting method. It is shown that the technique can provide greater strength enhancement to lightly reinforced sections and that provision of deflectors enhances efficiency.
고인성 시멘트 복합체를 사용한 철판보강 합성 커플링 보의 손상평가
윤현도 ( Yun Hyun-do ),김선우 ( Kim Sun-woo ),전에스더 ( Jeon Esther ),서수연 ( Seo Soo-yeon ),최창식 ( Choi Chang-sik ),최기봉 ( Choi Ki-bong ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2
High performance fiber-reinforced cement composites(HPFRCCs) have the potential to provide seismic devices or elements with high ductility and damage tolerance. Acoustic emission(AE) is another emerging area that can monitor architectural and civil structures for signs of deterioration and damage. Developed in isolation of one another, these two promising technologies can be integrated to provide HPFRCC structural elements capabilities to accurately monitor their performance to highly demanding loading conditions such as those posed by seismic events. AE characteristics of HPFRCC composite coupling beam was investigated during the entire loading period. The fundamental test performed in laboratory shows that the cracking(damage) process can be practically monitored by the measurement of AE signals.