• Journal of The Korean Society For Urban Railway
• /
• v.6 no.4
• /
• pp.223-231
• /
• 2018

Since the introduction of PSD in 2005, the number of accidents involving passengers falling onto the tracks accidentally or intentionally have drastically decreased, but the number of PSD related passenger accidents is increasing. While existing papers on PSD have been devoted to systemic introduction and system improvement, papers on passenger casuality accidents due to deteriorated PSD have been limited. This paper proposes revising of the scenario model for passenger accidents using classified hazard sources of PSD.

• Journal of the Architectural Institute of Korea Planning & Design
• /
• v.35 no.11
• /
• pp.35-42
• /
• 2019

The purpose of this study was to study social housing and incubating module planning for the urban regeneration in the deteriorated residential areas. The site of this study is Gwange-ro Gwangmyeong 3-dong, where old residential areas are concentrated, and there are problems in the decreasing number of young people and the aging population and elderly population. In this study, the necessity of supporting housing according to local characteristics and various programs and facilities are proposed, and various alternatives of modular housing are derived. As a result, it proposed verification of local regeneration and activation and orientation of social housing and local regeneration programs using modularity in the future.

• Journal of the Korean Wood Science and Technology
• /
• v.31 no.6
• /
• pp.45-54
• /
• 2003

The density and strength of wood is affected by degradations and defects, such as voids and knots. Old wooden structures such as traditional cultural properties have been deteriorated by these types of defects. They were evaluated by a visual observation that is difficult to evaluate the inner deterioration in structures. In this study, three nondestructive testing techniques were investigated to detect the wooden structural members. Ultrasonic stress wave tests, drilling resistance tests and visual inspections were used to examine the structural wood members. Patterns of Resistograph using by drilling resistance tests could indicate the features of internal wood such as voids, knots, decay, fungi, and so on. The technique just like as ultrasonic stress wave tests, however, difficult to detect exactly area where small amounts of internal deterioration in logs are. In spite of results of ultrasonic stress wave test, the internal deterioration of wooden structural members could be evaluated by the relationship between ultrasonic stress wave tests and drilling resistance tests.

• Smart Structures and Systems
• /
• v.31 no.1
• /
• pp.79-88
• /
• 2023

As the number of deteriorated buildings increases, the importance of safety diagnosis, maintenance, and the repair of buildings also increases. Traditionally, building condition assessments are performed by one person or one company and various inspections are needed. This entails a subjective judgment by the inspector, resulting in different assessment results, poor objectivity and a lack of reliability. Therefore, this study proposed a method to bring about accurate grading results of building conditions. The limitations of visual inspection and condition assessment processes previously conducted were identified by reviewing existing studies. Building defect data was collected using the reverse-engineered three-dimensional (3D) model. The accuracy of the results was verified by comparing them with the actual evaluation results. The results show a 50% time-saving to the same area with an accuracy of approximately 90%. Consequently, defect data with high objectivity and reliability were acquired by measuring the length, area, and width. In addition, the proposed method can improve the efficiency of the building diagnosis process.

• The magazine of the Korean Society for Advanced Composite Structures
• /
• v.4 no.1
• /
• pp.9-13
• /
• 2013

• Magazine of the Korea Concrete Institute
• /
• v.12 no.3
• /
• pp.70-77
• /
• 2000

• Magazine of the Korea Concrete Institute
• /
• v.17 no.6 s.89
• /
• pp.83-91
• /
• 2005

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2002.11a
• /
• pp.47-53
• /
• 2002

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1996.11a
• /
• pp.180-180
• /
• 1996

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2003.10a
• /
• pp.105-111
• /
• 2003