• Title/Summary/Keyword: Supporting material

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Research on bearing characteristics of socket-spigot template supporting system

  • Guo, Yan;Hu, Chang-Ming;Lian, Ming
    • Steel and Composite Structures
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    • v.20 no.4
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    • pp.869-887
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    • 2016
  • The socket-spigot template supporting system is widely used in engineering applications in China. As a newer type of support structure, there has been growing research interest in its bearing capacity. In this paper, four vertical bearing capacity tests were carried out on the basic mechanical unit frame of a socket-spigot template supporting system. The first goal was to explore the influence of the node semi-rigid degree and the longitudinal spacing of the upright tube on the vertical bearing capacity. The second objective was to analyze the displacement trend and the failure mode during the loading process. This paper presents numerical analysis of the vertical bearing capacity of the unit frames using the finite element software ANSYS. It revealed the relationship between the node semi-rigid degree and the vertical bearing capacity, that the two-linear reinforcement model of elastic-plastic material can be used to analyze the socket-spigot template supporting system, and, through node entity model analysis, that the load transfer direction greatly influences the node bearing area. Finally, this paper indicates the results of on-site application performance experiments, shows that the supporting system has adequate bearing capacity and stability, and comments on the common work performance of a socket and fastener scaffold.

Analysis on the stress and economy of Feeder supporting metal designed a steel pipe (강관을 이용한 급전선금구의 응력해석 및 경제성 분석)

  • Na, Hyun;Ahn, Young-Hoon;Lee, Ki-Won
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.286-291
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    • 2008
  • The catenary line and feeder line installed on same electrical pole in opened place of AC electrical railroad. The Electrical pole has receive a different weight from the catenary line and feeder line. So we have designed the Feeder supporting metal with new shape and material based on this fact. And then we have examined the stability of Feeder supporting metal designed a steel pipe by FEM program. New steel pipe compared with existing steel pipe on a economy respect. That result give proof the stability and economy as feeder supporting steel. Therefore this device have a basic of Value Engineering, so we have the need of reflection to design as a device of new electrical pole.

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A Study on Improvements of the Educational Facilities & Equipment Services Supporting for Disabled Students in University (장애대학생 교육복지지원 시설·설비부문의 개선방안에 대한 연구)

  • Min, Kyung-Suk
    • Journal of the Korean Institute of Educational Facilities
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    • v.27 no.5
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    • pp.24-31
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    • 2020
  • This study proposed an effective improvement direction for the education and welfare supporting facilities and equipment sectors to guarantee the right of disabled students to study in university. To derive high-demand items, the value engineering quality model technique was conducted on the students who majoring in architecture and the disabled students. The high-demand items for the education and welfare supporting facilities and equipment was detailed by interviews with the disabled students. Especially, anti-skid floor material, spacious access space for electric wheelchair, efficient operation system for elevator and cafeteria waiting time are strongly demanded for the disabled students. Based on this research, universities can make efficient investments and improvements in the education and welfare supporting facilities and equipment sectors for disabled students.

Characteristics of Materials Recycling Product Using CPW from Households According to the Amount of r-LDPE (r-LDPE 혼입율에 따른 생활계 복합 폐플라스틱 물질재활용 제품 특성)

  • Kang, Suk-Pyo;Kang, Hye-Ju;Kim, Sang-Jin;Shin, Sung-Chul;Lee, Min-Hi
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.9 no.4
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    • pp.425-432
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    • 2021
  • In this paper, We produced supporting for ginseng cultivation facilities as a material recycling product of CPW(Complex Plastic Wastes, CPW) from households. And we analyzed the characteristics of material recycling products according to the amount of r-LDPE(Recycled low density polyethylene, r-LDPE) used. As a result, as the amount of recycled LDPE used increa sed, the tensile strength a nd elonga tion of ma teria l recycled products using CPW increa sed, but a sh decrea sed. When the recycled r-LDPE usage is 5% or more, the physical properties of the material recycling product using CPW stably satisfy the quality standard (GRM 3093-2021) of supporting for ginseng cultivation facilities.

Web Document's Efficient Browsing Using Fluid Link (Fluid Link를 이용한 웹 문서의 효율적인 브라우징)

  • 송승헌;윤보열;전형민;정선인;곽상호;김응곤
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 1999.11a
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    • pp.384-389
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    • 1999
  • Most document consists of primary content and supporting material, such as footnotes, detailed explanations, and illustrations, and the related supporting materials are linked as hypertext on web document. However the content of hypertext links Is appeared in the new windows on present web browser. Then the user will leave the primary material, may lose the entire context, and must have some difficulties to return to the primary context when the interest disappears. Using the technique for fluid links, we can solve these problems easily. If the mouse is putted on the link, the related material is presented in between lines or at margin maintaining the context of primary material. In this paper, we introduce the various browsing techniques using fluid links, analyze the forms and the features, and then we propose the best way to implement inJava.

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Basic Study for Theoretical Design of Rock Blots at Seong Ju Tunnel (성주 터널에 사용될 Rock Bolt의 이론적인 설계 기준에 관하여)

  • 강선덕
    • Explosives and Blasting
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    • v.16 no.2
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    • pp.23-33
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    • 1998
  • This study has been carried out to design the standards of rock bolts which are recommended to be used for supporting material in Seong Ju tunnel, Under recently planned to construct. Due to the weak bedding rocks along the Tunnel, NATM supporting method is assumed to be applied and the design and calculation for rock bolts which are important material for this supporting method. Though the study, the results obtained are as follows. 1) The rocks defined s coarse sandstone, fine sandstone, medium sandstone, sandy shale and silty shale are normal rocks in strength, and black shale, greywacke and conglomerate are weak rocks in strength. 2) When the length of 3∼4meters of rock bolts are used, the distances of bolts are supposed to be 1.3∼1.8m in sandstone and 1.3∼2.0m in shale and for greywacke the distance should be 1.5m.

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Design of a Planar LPDA Antenna with Light-Weight Supporting Structure for Installing on an Aircraft (항공기 탑재용 경량화 지지 구조를 갖는 평면 LPDA 안테나 설계)

  • Park, Young-Ju;Park, Dong-Chul
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.27 no.3
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    • pp.253-260
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    • 2016
  • This paper proposes a planar Log-Periodic Dipole Array(LPDA) antenna with light-weight supporting structure for installing on an aircraft. The proposed antenna is designed by applying a planar skeleton supporting structure that has light-weight for an aircraft and is capable of withstanding structural vibration. The material of the planar skeleton supporting structure is a Polyether ether ketone(Peek) which has excellent characteristics on strength and temperature. The proposed antenna is fabricated by attaching the radiating elements of the LPDA on both sides of the supporting structure. The changed input impedance due to the dielectric material of the supporting structure was compensated for by controlling the distance and length of several radiating elements. The 10-dB return loss bandwidths of the designed planar LPDA antenna with light-weight supporting structure are obtained as 0.4~3.1 GHz(7.3:1) in the simulation and 0.41~3.5 GHz(8.2:1) in the measurement. The average gains in 0.5~3 GHz band are 6.77 dBi in the simulation and 6.55 dBi in the measurement. Therefore, we confirm that the designed antenna is appropriate to be installed on an aircraft due to its light-weight structure and wideband directional radiation characteristics.

Analysis on the Stress and Economy of Feeder Supporting Metal Designed a Steel Pipe (강관을 이용한 급전선금구의 응력해석 및 경제성 분석)

  • Na, Hyun;Ahn, Young-Hoon;Lee, Ki-Won
    • Journal of the Korean Society for Railway
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    • v.11 no.5
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    • pp.499-503
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    • 2008
  • The catenary line and feeder line installed on same electrical pole in opened place of AC electrical rail-road. The Electrical pole has receive a different weight from the catenary line and feeder line. So we have designed the Feeder supporting metal with new shape and material based on this fact. And then we have examined the stability of Feeder supporting metal designed a steel pipe by FEM program. New steel pipe compared with existing steel pipe on a economy respect. That result give proof the stability and economy as feeder supporting steel. There-fore this device have a basic of Value Engineering, so we have the need of reflection to design as a device of new electrical pole.