• Title/Summary/Keyword: Roof structure

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Operationg Characteristics of 50kW Utility Interactive Photovoltaic System (목포대학교 기숙사 30[kW]급 태양광발전시스템 발전특성)

  • Moon, Chae-Joo;Lim, Joung-Min;Cheang, Eui-Heang;Park, Sang-Jin;Park, Gui-Yeol
    • 한국태양에너지학회:학술대회논문집
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    • 2008.11a
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    • pp.53-56
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    • 2008
  • A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system used infinity of solar energy, cost of fuel is needless and there in no air pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 30[kW] large scale applications installed in Mokpo National University dormitory roof. The status of photovoltaic system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory. In this paper represent 30[kW] utility photovoltaic system examination result.

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Indian Earthquake(2001. 1. 26) and its damaged charateristics (2001. 1. 26 인도지진 및 그 피해 특성)

  • 전명순
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2001.04a
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    • pp.3-9
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    • 2001
  • The Ms 7.7 earthquake of Gujarat, India occured early in the morning of January 26, 2001. Subsequent of the earthquake, as a Seismologist at Korea Institute of Geoscience and Mineral Resources(KIGAM), I have been visited epicentral area here reporting the impressions and initial observations collected during the period of Feb. 07 to 13. The trace of surface faulting was not founded. However the mechanism of the earthquake suggests the indenting Indian plate to the Eurasian plate was the tectonic background of this earthquake. Large casualties compare with the magnitude and focal depth of the event, seems due to the poor construction of the typical ordinary Indian housing structure. The wall and roof of the house are very thick to avoid high temperature of the epicentral region.

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An Analysis of Stabilizing Process of Cable Dome and Its Application (케이블 돔의 안정화 이행과정해석 및 적용)

  • HwangBo, Seok;Yoo, Yong-Ju;Han, Sang-Eul
    • Journal of Korean Association for Spatial Structures
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    • v.6 no.2 s.20
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    • pp.69-76
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    • 2006
  • Cable dome is one of tension structure which is gradually stabilized by tensioning tables from initially unstable state to finally stable state. This stabilizing process is not able to be developed by general analysis because some cables endure compression forces during stabilizing process. Thus, this paper uses dynamic relaxation method to solve this problem. To apply this stabilizing process analysis to the actual project, this paper deals with cable dome roof of Seoul Olympic Gymnasium. Finally, this paper prove the usefulness of stabilizing process analysis by comparing the analysis results and the measurements.

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Structural System Development by Nonlinear Analysis of Polyhedron Curved Space Structure Using Quasicrystal System (준결정 시스템을 이용한 다면체 곡면 대공간구조의 비선형해석을 통한 구조시스템 개발)

  • Kim, Seung-Deog;Lee, Kyoung-Su
    • Journal of Korean Association for Spatial Structures
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    • v.16 no.4
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    • pp.125-132
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    • 2016
  • This paper is a study on the nonlinear behavior of polyhedron curved space roof as building structures of quasicrystal system. The quasicrystal is made up of two kinds of parallel hexahedrons, and all the line elements of the parallelepiped have the same length. The quasicrystal design grid dome has a pentagonal symmetry and all members have the same length. This paper described form of design gird dome, and showed the analysis conditions. Also, The displacement-load curve is shown through the analysis and we grasped the flow of the load and forces through analysis of design grid dome applied quasicrystal system.

Development on the Aluminum Carbody for Rubber-Tired AGT Vehicle (고무차륜형 AGT 경량전철 차량용 알루미늄 차체의 개발)

  • Kim, Yeon-Su;Park, Sung-Hyuk;Baek, Nam-Uk;Kim, Dong-Seong
    • Proceedings of the KSME Conference
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    • 2003.04a
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    • pp.1118-1123
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    • 2003
  • Based on the design requirements(size, strength, structure, weight, and etc.) for the rubber-tired AGT vehicle, carbody made of aluminum alloy is designed. The analysis of strength and stiffness is performed in the designed carbody, which results in the modification for optimal shapes and structures. It consists of a under frame, side frame, roof frame, end frame and forehead frame. After the carbody manufactured, tests are performed, which are vertical load test, longitudinal compressive load test, twisting load test, twisting natural frequency measurement, bending natural frequency measurement and 3 points supporting test. Results of them can guarantee a structural safety.

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Analysis of light-frame, low-rise buildings under simulated lateral wind loads

  • Fischer, C.;Kasal, B.
    • Wind and Structures
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    • v.12 no.2
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    • pp.89-101
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    • 2009
  • The Monte Carlo procedure was used to simulate wind load effects on a light-frame low-rise structure of irregular shape and a main wind force resisting system. Two analytical models were studied: rigid-beam and rigid-plate models. The models assumed that roof diaphragms were rigid beam or rigid plate and shear walls controlled system behavior and failure. The parameters defining wall stiffness, including imperfections, were random and included wall stiffness, wall capacity and yield displacements. The effect of openings was included in the simulation via a set of discrete multipliers with uniform distribution. One and two-story buildings were analyzed and the models can be expanded into multiple-floor structures provided that the assumptions made in this paper are not violated.

Structural Characteristics of a Hybrid Composite Carbody of Korean Tilting Train by Weight Load (한국형 틸팅열차용 복합재 차체의 하중적재에 따른 구조적 특성고찰)

  • Kim Jung-Seok;Jeong Jong Cheol;Han Jeong-Woo;Lee Sang-Jin;Kim Seung-Cheol;Seo Sung-Il
    • Journal of the Korean Society for Railway
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    • v.9 no.3 s.34
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    • pp.251-256
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    • 2006
  • This paper explains manufacturing process, analysis and experimental studies on a hybrid composite carbody of Korean tilting train. The composite carbody with length of 23m was manufactured as a sandwich structure composed of a aluminium honeycomb core and woven fabric carbon/epoxy faces. In order to evaluate deformational behavior of the composite carbody, the static load test under vertical load has been conducted. From the test, the vertical deflection an겨 cross sectional deformation of the carbody were analysed and measured. The maximum deflection along the side sill was 9.25mm in the experiment and 8.28mm in the analysis. The maximum cross sectional deformation was measured 5.42mm at carbody center in lateral direction and 4.06mm at roof center in vertical direction.

The Three Dimensional Modeling Method of Structure in Urban Areas using Airborne Multi-sensor Data (다중센서 데이터를 이용한 구조물의 3차원 모델링)

  • Son, Ho-Woong;Kim, Ki-Young;Kim, Young-Kyung
    • Journal of the Korean Geophysical Society
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    • v.9 no.1
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    • pp.7-19
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    • 2006
  • Laser scanning is a new technology for obtaining Digital Surface Models(DSM) of the earth surface.It is a fast method for sampling the earth surface with high density and high point accuracy. This paper is for buildings extraction from LiDAR points data. The core part of building construction is based on a parameters filter for distinguishing between terrain and non-terrain laser points. The 3D geometrical properties of the building facades are obtained based on plane fitting using least-squares adjustment. The reconstruction part of the procedure is based on the adjacency among the roof facades. Primitive extraction and facade intersections are used for building reconstruction. For overcome the difficulty just reconstruct of laser points data used with digital camera images. Also, 3D buildings of city area reconstructed using digital map. Finally, In this paper show 3D building Modeling using digital map and LiDAR data.

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A Clinical Experience of Direct Extension to Frontal Sinus of Orbital Dermoid Cyst (전두동을 침습한 안와부 피부모양기형낭의 치험례)

  • Lee, Sang Soon;Lee, Hyung Chul
    • Archives of Plastic Surgery
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    • v.33 no.2
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    • pp.252-254
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    • 2006
  • The dermoid cyst is the one of common space occupying orbital lesion. This lesion is regarded as a non-invasive tumor, but infrequently causes destruction of adjacent bony structure and displacement of adjacent tissue. We experienced a characteristic ovoid orbital dermoid cyst that occupied in the frontal sinus and causes displacement of the eyeball with well-defined lining. This 55-year-old male presented a mass in left orbit, which rapidly increased in size for past 12 months, and patient could not open left eyelid. We removed this tumor totally then reconstructed the orbital roof and frontal sinus with an iliac bone graft and polyethylene sheet(Medpor Newnan, USA). This patient was followed up for 12 months and patient obtained satisfactory result without any complication suck as recurrence or infection.

Power Survey of 30kW Solar System without tracking mechanism (30kW 고정식 태양광발전시스템의 발전 특성 조사)

  • Moon, Chae-Joo;Lim, Joung-Min;Chang, Young-Hak;So, Soon-Youl;Choi, Byung-Chun
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.1126-1127
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    • 2008
  • A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system used infinity of solar energy, cost of fuel is needless and there in no air pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 30[kW] large scale applications installed in Mokpo National University dormitory roof. The status of photovoltaic system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory. In this paper represent 30[kW] utility photovoltaic system examination result.

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