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115 results on '"Kim, Heung-Youl"'

1. A Study of the Comparative Evaluation System of the Lower-Limb Exoskeleton

Author

Kong, Yong-Ku, Park, Sang-Soo, Shim, Jin-Woo, Kim, Dae-Min, Kim, Heung-Youl, Shim, Hyun-Ho, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Stephanidis, Constantine, editor, Antona, Margherita, editor, Ntoa, Stavroula, editor, and Salvendy, Gavriel, editor

Published
2024
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13. Study on prevention of spread of vertical fire along finishing materials for external wall of high-rise buildings

Author

Yoo Yong Ho, Chae Seung Un, Kim Heung Youl, and Kim Woon Hyung

Subjects
Engineering (General). Civil engineering (General), TA1-2040
Abstract

Although there are laws in the Korea Building Act relating to exterior finishing materials, fireproof structures and fire-stop of curtain wall structures, the standards relating to and test methods on securing detailed fire safety functions for exterior materials of all buildings including high-rise buildings have not been prepared. This is due to the fact that test methods and standards to quantitatively evaluate the vertical fire spread of the exterior material of buildings do not exist. In addition, while semi non-combustible materials or non-combustible materials are required to be used to prevent fire spread in buildings which exceed 30-stories, it is necessary to review the standards and regulations in cases where fire blocking systems, capable of preventing the vertical fire spread within the curtain wall, are installed to consider permitting the utilization of fire retardant material following an assessment of the construction characteristics of high-rise buildings. The functional evaluation standards and test methods on the vertical fire spread introduced in this study will be a more effective method for performing evaluations to prevent fire spread compared to the currently utilized method of performing small scale tests.

Published
2013
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28. Experimental Study on the Fire Resistance Performance of Prestressed Composite Beam with Corrugated Web under Standard Fire with Loading Condition

Author

Kim, Heung-Youl, Kim, Hyung-Jun, Park, Kyung-Hoon, Cho, Bum-Yean, Kim, Heung-Youl, Kim, Hyung-Jun, Park, Kyung-Hoon, and Cho, Bum-Yean

Abstract

In this study, fire resistance tests were performed on a conventional slim floor beam and a prestressed composite beam with corrugated webs, which is suitable for a long-span structure with a reduction in story height by utilizing the prestress and accordion effect. In the fire test program, the ISO 834 standard fire curve was adopted. Key test variables were the effect of prestress, shape of corrugated webs, and thickness of sprayed fireproofing material. All of the test specimens demonstrated enhanced fire resistance performance exceeding the expected performance level. The prestressed composite beams with corrugated webs especially showed excellent fire performance, considering these specimens had thin fireproofing thickness compared to the conventional slim floor specimen.

Published
2014

29. Experimental Study on Fire Resistance Performance of a Hollow Slab Using a Lightweight Hollow Sphere

Author

Cho, Bum-Yean, Kim, Hyung-Jun, Park, Kyung-Hoon, Kim, Heung-Youl, Cho, Bum-Yean, Kim, Hyung-Jun, Park, Kyung-Hoon, and Kim, Heung-Youl

Abstract

This study evaluates the fire resistance performance (1–2h) of a reinforced concrete (RC) structure-void slab using a lightweight hollow sphere, which can reduce the unnecessary dynamic of removing the central concrete. For this experiment, we set up the depth of the concrete cover, live load, and span length as the factors. The result comes out with 50 mm cover depth of the RC structure hollow slab secured. It was shown that 120 minutes of fire resistance performance can be secured regardless of the length of the structure and loading. Among these factors, the resisting capability changes more sensitively with the live load rather than the thickness of cover. The shorter span in length could assure better fire resistance performance.

Published
2014

30. The Study on Fire Safety by a Real-Scale Combustion Experiment of Composite Material

Author

Kweon, Oh-Sang, Kim, Heung-Youl, Chae, Seung-Un, Cho, Bum-Yean, Kweon, Oh-Sang, Kim, Heung-Youl, Chae, Seung-Un, and Cho, Bum-Yean

Abstract

In this study, a real-scale combustion experiment was carried out for a Styrofoam and glass wool sandwich panel to figure out the fire safety for the composite material used for a building. In the experiment, a heat release rate of a sandwich panel was measured by the ISO 9705 fire test method. Research has also tested and compared temperature change in the Large Scale Calorimeter (LSC) experiment equipment to evaluate the structural safety of the structure body. As a result of the experiment, the structural body with the Styrofoam sandwich panel collapsed which was caused by propagation, and in case of the glass wool sandwich panel, the combustion did no propagate inside. Since the composite material experiences various types of fire hazards depending on the combustion characteristics of the core material, the exact combustion characteristic should be expected by the full-scale combustion experiment.

Published
2014

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