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        검색결과 105

        16.
        2021.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, the types of thermal breakers applied to structures to prevent thermal bridges were identified. Condensation prevention performance was evaluated for apartment houses with standard floor structures to which a thermal breaker was applied. In addition, the effect of thermal cross-blocking was compared by calculating the total heat and equivalent U-value through the wall. (1) As a result of the evaluation of anti-condensation performance, when “가” grade insulation was applied, the surface temperature increased by about 1K due to the application of the thermal breaker. The TDR value increased by about 0.06 to 0.07. When "나" grade insulation was applied, the minimum surface temperature increased by about 1K, and the TDR value increased by about 0.05~0.06. (2) As a result of the evaluation of total heat and U-equivalent, it was possible to reduce the total heat by 38.5~44.9% and U-equivalent by 38.5~45.0% for the "가" grade insulation to which the thermal breaker was applied. In addition, the "나" grade insulation to which the thermal breaker was applied can reduce total heat by 38.9 to 43.6%, and reduce the Uequivalent by 38.9 to 43.7%.
        4,000원
        19.
        2019.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A tensegrity module structure is suitable type for spatial structures. Because the tensegrity is composed of set of discontinuous compressive elements (struts) floating within a net of continuous tensile elements (cables), the system can provide the basis for lightweight and strong. However, despite the advantages of tensegrities, design and fabrication of the systems have difficulty because of form-finding methods, pin-connection and the control of prestress. In this paper, the new pin-connection method was invented to make the tensegrity module. The production process and practical implementation of uniformly compressed the tensegrity structures by using a UTM are described. Experiments showed the mechanical response and failure aspects of the tensegrity system.
        4,000원
        20.
        2018.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study showed that experimental study of inelastic nonlinear behavior of two-way beam string structures. General large span structures consisting of beam members have large moment and long cross section of area. In order to decrease these excessive moment and deflection, the two-way beam string structures composed of H-Beam, strut, and cable elements were proposed. In the two-way string beam, the cable with the prestress improves force distribution of some weight reduction. Two systems made of structural steel and cables were tested. The nonlinear behaviour of the two-way beam string structures studied by using finite element model and compared to experimental results. The displacement of the LVDT in the center of the beam correspond with the ABAQUS results. 2,200MPa cable can afford to bear breaking load than 1,860MPa cable. The two-way beam string structures is correlated to the finite element model and the experimental results. In consequence, It showed that the system with two-way cables exhibits much better structural performances than H-Beam structures and beam with cable.
        4,200원
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