• 건축역사연구
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• 제15권3호
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• pp.7-25
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• 2006

This research examines symbolic meanings of architectural style of Japanese ruling era of Korea through analysis of Expo buildings. Expo buidings of Joseon Product Evaluation Expo(1915), Joseon Expo(1929), and Joseon Grand Expo(1940) are chosen as subjects of this research. Expos held in Korea since 1945 were creatures of colonial reign and their objectives are advertising the advancement of Japan. New and latest architectural styles of Western countries were used as a symbol of advancement in non-western countries. Renaissance style and Secession style in Joseon Product Evaluation Expo and Modernism style in Joseon Expo were introduced as architectural styles that symbolize advancement. On the contrary, the traditional architectural style of Joseon Dynasty was distorted as symbol of backwardness. Latest Western Architectural Styles were used elaborately and Intentionally to symbolize advancement and industrialization by Japanese ruling power and companies. Specially, Modernism style operating as 'symbol of advancement' is characteristic of non-western society in attempt to proceed Modernization through Westernization. Also, it can be suggested that architectures in Modernism style are used in ways to symbolize the advancement of the colonial reign authorities within the colonial society.

• 한국방재학회 논문집
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• 제5권3호
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• pp.67-72
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• 2005

본 연구는 건축물내의 완전 암흑상태에서 축광유도타일이 피난에 미치는 영향을 측정하기 위하여 조사하였다. 실험조사는 대구 Fire EXPO '05에 실험 장치를 전시하여 엑스포 관람자 520명을 대상으로 2005년 5월 26일부터 29일까지 실시되었다. 실험 조사결과 안전 암흑상태일 때 피난자세는 남자의 경우 70%, 여자는 72%가 벽을 더듬으며 피난한 반면에 축광유도타일이 설치된 경우에는 남자의 경우 88%, 여자의 경우 83%가 선채로 피난을 한 것으로 나타났다. 공공건물의 바닥에 축광유도타일을 설치하면 화재시 정전이 되더라고 평소와 다름없이 피난을 할 수 있는 것으로 나타났다.

• Structural Engineering and Mechanics
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• 제43권5호
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• pp.607-621
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• 2012

The Expo Culture Centre is one of the permanent buildings at the World Expo 2010 in Shanghai, China. The main structure has an oval shape and consists of 36 radial cantilever steel trusses with different lengths and inner frames made of concrete-filled rectangular steel tube members. Tuned mass dampers are used to reduce the excessive vibrations of the sixth floor that are caused by human-induced resonance. A three-dimensional analytical model of the system is developed, and its main characteristics are established. A series of field tests are performed on the structure, and the test results show that the vertical vibration frequencies of most structural cantilevers are between 2.5 Hz and 3.5 Hz, which falls in the range of human-induced vibration. Twelve pairs of tuned mass dampers weighing 115 tons total were installed in the structure to suppress the vibration response of the system. These mass dampers were tuned to the vertical vibration frequency of the structure, which had the highest possibility of excitation. Test data obtained after the installation of the tuned mass dampers are used to evaluate their effectiveness for the reduction of the vibration acceleration. An analytical model of the structure is calibrated according to the measured dynamic characteristics. An analysis of the modified model is performed and the results show that when people walk normally, the structural vibration was low and the tuned mass dampers have no effect, but when people run at the structural vibration frequency, the tuned mass dampers can reduce the floor vibration acceleration by approximately 15%.

• 한국화재소방학회논문지
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• 제19권4호
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• pp.69-74
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• 2005

본 연구는 건물화재의 정전시 완전 암흑상태에서 축광유도표지가 피난에 미치는 영향을 측정하기 위하여 조사하였다 실험조사는 대구 Fire EXPO '05에 실험 장치를 전시하여 엑스포 관람자 520명을 대상으로 2005년 5월 26일부터 29일까지 실시되었다. 실험 조사결과 안전 암흑상태일 때 피난자세는 남자의 경우 $70\%$, 여자는 $72\%$가 벽을 더듬으며 피난한 반면에 축광유도표지가 설치된 경우에는 남자의 경우 $88\%$, 여자의 경우 $83\%$가 선채로 피난을 한 것으로 나타났다. 나이별, 신장별, 시력별로 53초에서 64초까지 피난시간이 단축된 것으로 나타났다. 공공건물의 바닥에 축광유도표지를 설치하면 화재시 정전이 되더라도 평소와 다름없이 피난을 할 수 있는 것으로 나타났다.

• Wind and Structures
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• 제1권4호
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• pp.337-349
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• 1998

A numerical and experimental study was performed for the wind flow field in one area, comprising a group of several pavilions separated by passageways, of the EXPO '98 - a World Exposition (Lisbon, Portugal). The focus of this study is the characterization of the flow field to assess pedestrian comfort. The predictions were obtained employing the Reynolds averaged Navier-Stokes equations with the turbulence effects dealt with the ${\kappa}-{\varepsilon}$ RNG model. The discretization of the differential equations was accomplished with the control volume formulation in a Cartesian coordinate system, and an advanced segregated procedure was used to achieve the link between continuity and momentum equations. The evaluation of the overall numerical model was performed by comparing its predictions against experimental data for a square cylinder placed in a channel. The predicted values, for the practical geometry studied, are in a good agreement with the experimental data, showing the performance and the reliability of the ${\kappa}-{\varepsilon}$ RNG model and suggesting that the numerical simulation is a reliable methodology to provide the required information.