• Architectural research
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• 제15권1호
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• pp.53-58
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• 2013

High strength concrete is being used increasingly in mass structure projects. The purpose of this study is to investigate the influence of temperature during mixing, placing and curing on the strength development, hydration products and pore structures of high strength concrete in mass structures. The experiments were conducted with two different model walls, viz.: 1.5 m and 0.3 m under typical summer and winter weather conditions. The final part of this study deal with the clarification of the relationship between the long-term strength loss and the microstructure of the high strength concrete at high temperatures. Test results indicated that high elevated temperatures in mass concrete structures significantly accelerate the strength development of concrete at the early ages, while the long-term strength development is decreased. The long-term strength loss is caused by the decomposition of ettringite and increased the total porosity and amount of small pores.

• Structural Engineering and Mechanics
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• 제31권1호
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• pp.25-38
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• 2009

Local failure of a primary structural component induced by direct air-blast loading may be itself a critical damage and lead to the partial or full collapse of the building. As an extensive research to mitigate blast-induced hazards in steel frame structure, a state-of-art analytical approach or high-fidelity computational nonlinear continuum modeling using computational fluid dynamics was described in this paper. The capability of the approach to produce reasonable blast pressures on a steel wide-flange section column was first evaluated. Parametric studies were conducted to observe the effects of section sizes and boundary conditions on behavior and failure of columns in steel frame structures. This study shows that the analytical approach is reasonable and effective to understand the nature of blast wave and complex interaction between blast loading and steel column behavior.

• 한국실내디자인학회논문집
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• 제13권6호
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• pp.115-122
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• 2004

The space planning and interior lay out of youth centers should be determined carefully for youth education and leisure after school which is considered cultural exchange, hobby, physical training in area of the daily life and to prevent unvaried or unwanted situation in the interior space. Recently, the youth center in youth facilities is architectural planning and managing without consideration of conditions of location environment, regional characteristics and prior condition of space. This paper try to provide basic architectural concept of the space planning for youth centers in urban. On the bases of survey and analysis, the basic data for youth centers have been proposed in consideration of the development of youth activity and community environment in korea. The results of the study were firstly, general basic data for the general architectural planning, secondly, guidelines for the space planning of youth centers in urban, thirdly, new alternative youth centers with 3 types.

• Journal of Construction Engineering and Project Management
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• 제5권1호
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• pp.40-46
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• 2015

This study presents the results of our analysis and recommendations for process and productivity improvements. The project studied consists of a 5-story research building, with a structure of steel frames supporting concrete slabs. The observations focused on the analysis of the overall erection and framing process. The methods used for the analysis consisted in intensive visits on site, where construction processes were observed in term of resources, activities, durations, materials' handling procedures, and technology used. Back to the office, authors used the information captured to model the different trades' activities, using work sampling and 5-minute rating technique. The work sampling provides insight into the activity, hence allowing for process improvements. The productivity of various trades is strongly dependent on the organization of the work process and work site conditions. Improving the productivity of the entire project or company is not possible until everyone is committed to improvement.

• Architectural research
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• 제3권1호
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• pp.37-44
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• 2001

This study aims to find out sector effects with the appraisal of building energy systems of urban ecosystem considering cost effects and environmental constraints condition such as climatic change factors including $CO_2$ gas which are not dealt in the institutional boundary as components standards and performance standards on energy performance of each part of a building applied on heavy energy spending buildings at present. The results of the appraisal of building energy systems shows that the existing building energy systems are not enough to fulfil the environmental condition under the environmental constraints supposing QELROs(Quantified Emission Limitation and Reduction Objectives) of carbon-dioxide exhaust. Henceforth, it is needed to fulfill the environmental criteria required by the Climatic Change Agreement for improving the adiabatic performance of each part of a building and active using of the solar energy.

• 한국농촌건축학회논문집
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• 제8권3호
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• pp.35-42
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• 2006

There are some studies about user's participation to reflect their desire and value on the planning of house by this time. These were constitution of unit space focused on the apartments, which is mostly theoretical. In architectural planning process, it takes time for continuous discussion and revision between architects and users. Also changes of plan must of necessity be so because of in or outside conditions. So, user's participation has its meaning that they take part in each step and portion of process faithfully on whole architectural processes. In this case, tenants of single houses were decided and they already buy building site and lay out rules jointly. With this circumstance I've researched a kind of test the reflection on various desires and its acceptance in each steps through completion of a construction work, which is based on their participation.

• 설비공학논문집
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• 제21권2호
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• pp.118-125
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• 2009

The purpose of this study is to evaluate the stack effect reduction alternatives in tall complex buildings in cold climates. The main problems in tall buildings occur in elevators. Such problems as elevator doors that do not close and exhaust airflows result in excessive pressure differences across elevator doors due to stack effect. Under the expected conditions causing these pressure differences, Field measurements are performed in three tall buildings. Each result of the measurements is analyzed in architectural design aspects. With these analysis, building design guidelines are proposed and analyzed by field measurements and computer simulations.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제7권2호
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• pp.37-45
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• 2001

The hospice movement evolved as an alternative to hospitals as places to die. Recently, the palliative care for dying and hospice has been developed rapidly and placed itself as one of the medical systems. But the studies on hospice program and establishment method in Korea are few or no in comparison with developed countries. Hospice unit within a general hospital is more efficient hospice type than other terminal care establishments, therefor it will be developed rapidly. With this in mind, this study puts elements of architectural planning on the hospice unit for the space requirements. Also, It is investigated the architectural conditions of hospice unit within a general hospital, analyzed the unit space and spatial composition in hospice unit. The purpose of this study is to propose the fundamental data and unit space for architectural plan and design.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제3권5호
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• pp.97-105
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• 1997

According as the medical demands have been high, ward dept, in general Hospital become more specifying. One thing of its sample is Children ward in general Hospitals and Children's medical demand become increasing. Therefore, this study aims to represent the standard for the architectural planning of the children ward in general Hospital. For it, the present conditions and space programs of 4 general Hospitals were investigated, analyzed. And to present children ward's functional programs, plans of the 2 domestic children hospitals and foreign children hospitals were analyzed. Then one children ward in general hospital was selected, architectural remodeing process was performed by the whole those sources.

• 한국공간구조학회논문집
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• 제19권1호
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• pp.93-100
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• 2019

There has been considerable recent interest in deep learning techniques for structural analysis and design. However, despite newer algorithms and more precise methods have been developed in the field of computer science, the recent effective deep learning techniques have not been applied to the damage detection topics. In this study, we have explored the structural damage detection method of truss structures using the state-of-the-art deep learning techniques. The deep neural networks are used to train knowledge of the patterns in the response of the undamaged and the damaged structures. A 31-bar planar truss are considered to show the capabilities of the deep learning techniques for identifying the single or multiple-structural damage. The frequency responses and the elasticity moduli of individual elements are used as input and output datasets, respectively. In all considered cases, the neural network can assess damage conditions with very good accuracy.