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직선 배치된 외부 비부착 프리스트레스 거더의 긴장재 극한응력 : 비교 연구
배종완 ( Bae Jong-wan ),홍성남 ( Hong Sung-nam ),김태완 ( Kim Tae-wan ),한경봉 ( Han Kyoung-bong ),박선규 ( Park Sun-kyu ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.2
This study deals with the stress f<sub>ps</sub> in unbonded tendons of prestressed concrete girder of bridges which was located in the straight line. Experimental variables were rectilinear arrangement of tendons and prestressing level of steel bar. Two types of improved anchorage system(6 total beams) designed. Static tests were carried out. This paper deals with stress at ultimate stage of the beams. A suitable method for the prediction of the ultimate stress f<sub>ps</sub> in the prestressed beams is also investigated. These values are compared with experimental stresses and stresses obtained from codes, proposed equations.
인양홀 이용 정착장치로 외부 후긴장 보강된 RC거더의 거동
배종완 ( Bae Jong-wan ),홍성남 ( Hong Sung-nam ),한경봉 ( Han Kyoung-bong ),박선규 ( Park Sun-kyu ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.2
The main purpose of this paper develops an improved anchorage system using the lifting hole of prestressed concrete girder of bridges. In addition, Aforementioned anchorage system was checked whether it can be conveniently applied to structures. To verify strengthening efficiency, Static tests were carried out. Experimnetal variables were anchorage shapes, prestressing level on the prestressing steel bar and tendon profiles. Deflections, strains and failure mode were evaluated to examine strengthening effect of the test specimens. Comparing cracking load of the experimental data, yielding load, ultimate load were analyzed.
Responsible Behavior of the Firm
Sang-Joon Kim(김상준),Hannah Oh(오한나),Jong-Wan Bae(배종완),Soojung Lee(이수정) 한국경영학회 2016 한국경영학회 통합학술발표논문집 Vol.2016 No.8
This study postulates that the inconclusive relationship between social and financial performance may be based on different motivation to engage in corporate social responsibility (CSR). As an unexplored dimension of the motivation for CSR actions, we propose the aspect that firms seek for enhancing ethical status, called conspicuous CSR. Drawn from the theory on conspicuous consumption (Veblen, 1899), we explore the possibilities that firms may spend their resources for society to reveal their ethical status. This implies that firms are likely to engage in CSR to advertise their CSR status. From this standpoint, we attempt to discern the behavioral aspect that a firm’s prosocial activities are dependent on its prior ethical status. And we investigate how different motivations, i.e. strategic CSR vs. conspicuous CSR, affect financial performance, especially instantiated by Tobin’s q. With a sample of 1,665 U.S. public firms between 1993 and 2012, we find that conspicuous CSR has a negative impact on market performance while strategic CSR has a positive impact. We expect that these findings can reconcile the inconclusive debate on the CSR-CFP relationship.