http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
우상벽,이승원,김선희,신진욱,김응호 한국복합신소재구조학회 2014 복합신소재구조학회 학술발표회 Vol.2014 No.04
Recently, the use of buried flexible pipes is widespread and ever increasing trend in the construction field. In this paper, we present the result of an investigation pertaining to the pipe stiffness of buried unplasticized polyvinyl chloride (PVC-U) pipes. To estimate the mechanical properties of PVC pipe produced by the domestic manufacturers, tensile test specimens were prepared and tested. In addition, parallel plate loading tests for the pipes with 150mm and 400mm inside diameters were conducted. From the test result, the pipe stiffness according to the ASTM D 2412 (2008) is estimated.
우상벽,김선희,이승원,천진욱,윤순종 한국복합신소재구조학회 2015 복합신소재구조학회 학술발표회 Vol.2015 No.04
In recent years, the Glass Fiber Reinforced Polymer Plastic (GFRP) structural shapes are available in civil engineering applications. Among many manufacturing techniques used for GFRP structural shapes, pultrusion process is one of the most widely used techniques to produce the structural members in civil engineering applications. This study was focused on the mechanical behavior of singly bolted lap-joint connection with various hole clearances (tight-fit: 0.5mm, 1.0mm, 1.5mm, 2.0mm, 3.0mm) in Pultruded GFRP structural members. The specimens with single bolt-hole have been tasted in tension under bolt-loading conditions. The failed specimens were examined for their failure load and fracture patterns with respect to the various hole clearances.
아치형 복부판 보강재가 설치된 플레이트거더 강합성교의 구조적 거동특성
우상벽 ( Sang Pyuk Woo ),유종호 ( Jong Ho Yoo ),이홍규 ( Hong Kyu Lee ),원용석 ( Yong Seok Won ),김선희 ( Sun Hee Kim ),윤순종 ( Soon Jong Yoon ) 한국복합신소재구조학회 2015 복합신소재구조학회논문집 Vol.6 No.4
In this paper, we present the result of analytical investigation pertaining to the structural behavior of steel-concrete composite plate girder with arch-type web stiffener. In the arch-type web stiffener located in the compression side of web, infill concrete is cast to strengthen the arch-type stiffener and also to exert resisting force against compression force. This type of composite steel-concrete plate girder bridge is built and is in service. To understand the behavior thoroughly, analytical parametric study was conducted by using the finite element method. As a result it was found that the effect of arch-type stiffener with infill concrete is considerable for the design of such type composite girder bridge.
아치형 복부판 보강재가 설치된 플레이트거더 강합성교의 구조적 거동특성
우상벽,유종호,이홍규,원용석,김선희,윤순종 한국복합신소재구조학회 2015 복합신소재구조학회논문집 Vol.6 No.4
In this paper, we present the result of analytical investigation pertaining to the structural behavior of steel-concrete composite plate girder with arch-type web stiffener. In the arch-type web stiffener located in the compression side of web, infill concrete is cast to strengthen the arch-type stiffener and also to exert resisting force against compression force. This type of composite steel-concrete plate girder bridge is built and is in service. To understand the behavior thoroughly, analytical parametric study was conducted by using the finite element method. As a result it was found that the effect of arch-type stiffener with infill concrete is considerable for the design of such type composite girder bridge.
김선희,우상벽,이홍규,유종호,윤순종 한국복합신소재구조학회 2015 복합신소재구조학회 학술발표회 Vol.2015 No.04
FRP members which have light weight, high specific strength and stiffness, and good corrosion resistance are used widely in the electrical transmission system. Recently, FRP instead of steel, wood, and concrete tower is installed and in use. In this paper, we investigated the feasibility of replacement of traditional materials (steel, wood, and concrete) in electrical transmission towers by the fiber reinforced polymer plastic (FRP) members through the literature review. It was found that the FRP electrical transmission towers were applied in many countries due to its various advantages.
김선희,박준석,유종호,우상벽,윤순종 한국복합신소재구조학회 2016 복합신소재구조학회 학술발표회 Vol.2016 No.04
Pultruded fiber reinforced polymeric plastic (PFRP) has many advantages such as high corrosion resistance, high specific stength/stiffness, light weight, etc. Pultrusion is a manufacturing process for producing continuous lengths of reinforced polymeric structural shapes with constant cross-section. The mechanical property of PFRP is usually regarded as an orthotropic material. The pultruded structural shapes are usually composed of thin-walled plate element. Because the composite material has relatively low elastic moduli, the design of pultruded compression members may not be governed by the material strength limit state but by the stability limit state such as the local buckling. Therefore, the stability limit state must be checked to design pultruded thin-walled compression members. In this paper, we present the analytical study results of elastic buckling strength of PFRP orthotropic plates with different fiber volume ratios. The local buckling analysis of pultruded compression members was conducted for various composite materials using the closed-form solution. From the study it was found that if E11/E22 is increased then the plate buckling coefficient, hence the plate buckling strength, is decreased.
Installation and Safety Evaluation of Tracking-type Floating PV Generation Structure
장민준,김선희,이영근,우상벽,윤순종 한국복합신소재구조학회 2014 복합신소재구조학회논문집 Vol.5 No.1
Pultruded glass fiber reinforced polymeric plastic (PFRP) and FRP member manufactured by sheet molding compound (SMC) have superior mechanical and physical properties compared with those of conventional structural materials. Since FRP has an excellent corrosion-resistance and high specific strength and stiffness, the FRP materialmay be highly appreciated for the development of floating-type photovoltaic (PV) power generation system. In this paper, advanced floating PV generation system made of PFRP and SMC is designed. In the design, it includes tracking solar altitude by tilting photovoltaic arrays and tracking solar azimuth by spinning structures. Moreover, theresults of the finite element analysis (FEA) are presented to confirm stability of entire structure under the external loads. Additionally, installation procedure and mooring systems in the Hap-Cheon Dam are discussed and the measurement of strain under the actual circumstances is conducted for assuring stability of actually installed structures. Finally, by comparison with allowable stress, appropriate safety of structure is confirmed to operate the system.
장민준 ( Min Jun Jang ),김선희 ( Sun Hee Kim ),이영근 ( Young Geun Lee ),우상벽 ( Sang Byock Woo ),윤순종 ( Soon Jong Yoon ) 한국복합신소재구조학회 2014 복합신소재학회논문집 Vol.5 No.1
Pultruded glass fiber reinforced polymeric plastic (PFRP) and FRP member manufactured by sheet molding compound (SMC) have superior mechanical and physical properties compared with those of conventional structural materials. Since FRP has an excellent corrosion-resistance and high specific strength and stiffness, the FRP material may be highly appreciated for the development of floating-type photovoltaic (PV) power generation system. In this paper, advanced floating PV generation system made of PFRP and SMC is designed. In the design, it includes tracking solar altitude by tilting photovoltaic arrays and tracking solar azimuth by spinning structures. Moreover, the results of the finite element analysis (FEA) are presented to confirm stability of entire structure under the external loads. Additionally, installation procedure and mooring systems in the Hap-Cheon Dam are discussed and the measurement of strain under the actual circumstances is conducted for assuring stability of actually installed structures. Finally, by comparison with allowable stress, appropriate safety of structure is confirmed to operate the system.