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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Architectural Institute of Korea Structure & Construction
Journal Basic Information
Journal DOI :
Architectural Institute of Korea
Editor in Chief :
Volume & Issues
Volume 29, Issue 12 - Dec 2013
Volume 29, Issue 11 - Nov 2013
Volume 29, Issue 10 - Oct 2013
Volume 29, Issue 9 - Sep 2013
Volume 29, Issue 8 - Aug 2013
Volume 29, Issue 7 - Jul 2013
Volume 29, Issue 6 - Jun 2013
Volume 29, Issue 5 - May 2013
Volume 29, Issue 4 - Apr 2013
Volume 29, Issue 3 - Mar 2013
Volume 29, Issue 2 - Feb 2013
Volume 29, Issue 1 - Jan 2013
Selecting the target year
Floor Vibration Evaluation of Lightweight Steel Frame Floor for Different Design Factors and Measuring Methods
Kim, Deok-Ki ; Park, Je-Woo ; Kim, Hong-Jin ; Ha, Tae-Hyu ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 3~10
Since the natural frequency and damping ratio of the light weight steel floor are lower than those of the reinforced concrete floor, the floor vibration due to a dynamic load is significant and the serviceability issue becomes more critical. In this paper, the floor vibration performance of the light weight steel floor is evaluated for different design factors. The impact loading test and walking test were performed on the floor specimen built with different design factors. The acceleration data obtained from tests were analyzed to obtain the natural frequency and damping ratio of the specimen, and the effect of design factors on the floor stiffness and vibration are evaluated. Further, the effect of variables of walking test method on the floor vibration performance is also evaluated. The floor vibration performance is evaluated using AISC design guide and AIJ design guide. The results indicate that the connection between the upper and lower beams due to wall construction increases the stiffness and the natural frequency of the entire floor and thereby improves the floor vibration performance. However, the installation of floor heating system and furniture do not effect on the floor vibration performance considerably.
Analysis of Fire Resistance Performance of Curtain-Wall Systems Applying Light-Weight Inorganic Panels
Yang, Seung-Cho ; Lee, Jae-Sung ; Lee, Bang-Sup ; Koo, Young-Ah ; Oh, Chang-Won ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 11~18
Lightweight curtain-wall systems applying aluminum and glass are usually in use, thereby increasing of high-rise and large buildings. Commonly inorganic insulations are better fire-performance than the organic insulation, but in a lightweight respect, it is disadvantageous than insulation mortars. For this reason, there is a growing interest in materials for a high-fire resistance and a high-lightweight. In this study, fire tests on the basis of EN13830 were performed on the curtain-wall applying newly developed light-weight inorganic panels and the typical curtain-wall with mineral-wool panels. From the test, fire resistance integrity, thermal insulation, and radiation properties were compared for both system. From the test results, the curtain-wall applying the newly developed light-weight inorganic panels showed better fire-performance than the typical curtain-wall for the fire resistance integrity and insulation.
Evaluation of Progressive Collapse Resisting Capability of Seismic Designed 5-Story RC Moment-Resisting Frame Using Nonlinear Dynamic Analysis
Kang, Suk-Bong ; Oh, Jun-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 19~28
In this study, the effects of inelastic beam-column joint, moment-resisting frame system and seismic design category on the progressive collapse resisting capability of structures are evaluated via nonlinear dynamic analysis for elimination of column following the procedure of GSA2003, where RC OMRF, IMRF and SMRF structures were designed in accordance with KBC2009. The bending moment-curvature relationship for beams and columns was identified with a fiber model, and the bending moment-rotation relationship for beam-column joints was calculated using a simple and unified joint shear behavior model and the moment equilibrium relationship for the joint. The results of the nonlinear dynamic analysis showed that framed structure designed with greater seismic load was evaluated to have higher progressive collapse resisting capability, and that the best progressive collapse resisting capability of structure was estimated in case of elimination of corner column, and that the analysis of 2-dimensional plane frame underestimated the progressive collapse resisting capability of structure due to negligence of lateral beams.
Axial Force of a Member by Using Green Functions Under the Arbitrary Thermal Load Function T(x) in the Winker Model
Kwak, Soon-Seop ; Kim, Seong-Sik ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 29~38
In the axial Winkler model, the thermal loads induce the axial displacement and force. When the unit thermal load is applied at x=a, the thermal strain can be expressed by using generalized functions, and that the related differential equations are also easily solved with the aid of the characteristics of generalized functions. From these solutions, the related Green functions are obtained. Depending on the conditions of both ends, when any type of thermal load function T(x) is applied between x=c and x=d, the axial displacement and force can be obtained by the proper integration of those related Green functions within the given range. For the more, the trend of displacements and forces, due to the spring constant k, can be known by nondimensionalized the related displacement and force.
Dynamic Behavior Characteristics Evaluation of Stone Pagoda Structure According to Earthquake Return Period
Kim, Ho-Soo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 39~46
Recently, the interests for the earthquake disaster reduction of stone pagoda structure have been increased. So, the seismic performance evaluation is required according to the construction types and seismic intensity. But, it is not easy to apply the general structural analysis because of the difference in the masonry structural characteristics of stone pagoda structure. Therefore, this study presents the reasonable seismic performance evaluation method for the stone pagoda structure. To this end, the seismic loads are generated according to seismic return period and then the dynamic behavior characteristics are evaluated through the structural modelling and analysis.
Evaluation of Shear Strength of Composite Hollow Core Slab with Concrete Topping
Lee, Sang-Sup ; Hong, Sung-Yub ; Park, Keum-Sung ; Bae, Kyu-Woong ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 47~54
Hollow core slabs(HCS), as well as double tee slab, can offer improved span and load bearing capacity with a composite structural topping. To ensure a composite action between the precast concrete slab and cast-in situ concrete, shear connectors such as tie bars, shear studs and steel plates are required on the top surface of precast concrete slabs. However, the use of shear connectors is generally not practicable for HCS and shear reinforcement is likewise impossible. Therefore, the shear strength of composite HCS may be limited to the lesser of horizontal shear strength and web-shear strength. In this paper, the horizontal shear strength and web-shear strength for composite HCS with longitudinal groove at interface are evaluated. An experimental and theoretical study on the effects of roughened interface and concrete topping on the shear capacity of composite HCS is presented. It is concluded that the roughness of longitudinal groove can transfer the horizontal shear stress to obtain the composite action and the shear strength of composite HCS can be computed using Expression (11-12) of ACI 318-08 or Expression (6.4) of Eurocode 2.
Evaluation Criteria of Organizational Characteristics of Data Repositories for Structural Experiment Information
Lee, Chang-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 55~64
The data repositories for structural experiment information include the information involved in the structural experiments. The information in the data repositories can be stored and retrieved via the internet by structural engineers and researchers. The organization of the data repositories needs to be easy to understand and efficient to use. The evaluations for the organization of the data repositories have been made mainly by the descriptive way. This paper proposes some numerical criteria for evaluating the organizational characteristics of data repositories for structural experiment information, particularity the distribution of the classes and attributes at the class levels. The evaluation criteria includes the criteria for the overall class levels, the criteria for each level, and the criteria for lower class levels. The criteria for the overall class levels include the total number of class levels and the ratio of total number of classes to total number of class levels, to describe the basic characteristics of the overall class levels. The criteria for each level include the number of classes at level and the average number of attributes in class at level, to describe the organization at each level. The criteria for lower class levels include the number of lower class levels and the number of classes at lower levels, and can be applied to some classes to identify the distribution of the classes at levels in the data repositories.
The Effect of Microorganisms on Compressive Strength of Cement Paste
Lee, Jun-Cheol ; Kim, Wha-Jung ; Chun, Woo-Yong ; Lee, Chang-Joon ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 65~72
This study investigated the effect of microorganisms on compressive strength development of cement paste. The Sporosarcina pasteurii used in this study was capable of microbial induced calcite precipitation(MICP). Four different cell concentrations were selected ranging from 10 to
per ml. distilled water as mixing water. From experimental results, cement paste with microorganisms showed higher strength gain compared with reference cement paste at earlier ages. From TG/DSC analysis, more calcium hydroxide was observed in the cement paste with microorganisms. The degree of hydration of the cement paste with microorganisms, evaluated by measuring non-evaporable water contents in cement paste, was also higher than that of reference cement paste. It is very likely that the strength improvement of cement paste is due to acceleration of hydration process caused by the metabolism of microorganisms. Further investigation is in progress to identify the specific mechanisms which is responsible for the improvement of compressive strength in early ages.
Experimental Study on Performance Heating and Floor Impact Noise in Floor Heating System on Using Ondol Panel of Double Metal Rendering
Bae, Dae-Kwon ; Kim, Jin-Bong ; Kim, Hwan-Sung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 73~82
This study is Experimental Measurement of Heating performance, Energy Consumption and floor impact noise in Floor Heating Method of Construction by Using Ondol Panel of Double Metal Rendering. For this one, an experiment tests producing an each test speciment and measuring performance heating and noise. The result is proved as hot-water supply temperature as
, maximum temperature about surface of mortar and air space in case of supply for 8 hours, mortar surface that is as
, the gap of piping on center of mortar surface
and air space
. Also, these is proved as a temperature of hot-water supply
, hot-water supplying or circulating for 8 hours, as a technical development on mortar surface that is superstructure plumbing
, the gap of piping on center of mortar surface
and air space
. On the other hand, in floor heating structure, mortar surface is
, the gap of piping on center of mortar surface as
, air space is
. In addition, the measurement is identified by hot-water supply is
and supply heating time for 4 hours, 4,646 kcal in technical development, 4,814 kcal in standards in floor heating system structure,
in hot-water supply, accumulating energy consumption of test speciment 1 is 5,643 kcal in case of heating and 5,860 kcal on standards in floor heating system structure. Also, the result of an experiment on other test-place in regard to between existing technology and developed technology of floor impact noise, sound pressure level in parts of center frequency and evaluating the figure by this test, existing technology are light-weight is 55dB, heavy-weight is 50dB and developed technology are light-weight is 48dB, heavy-weight is 46dB, is verified.
Development of an Flame Protective Method Adapted on Surface of a Urethane Foam in Site Based on Large Scale Fire Experiments for Ignitability & Flame Spread Rate
Lee, Young-Jae ; Park, Hyung-Joo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 83~91
The building construction industry has the highest death rate related to fire accidents occurred during urethane foam works. In order to quantify the risk of urethane foam works in construction phase, several large scale fire experiments has done for discovering the ignitability and flame spread rate of the urethane foam in a compartment room. Consequently, an oxygen-welding flame is not easy to ignite the surface of urethane foam due to its self-extinguishment ability. Nevertheless, if the urethane foam surface was ignited by pool-pan flame touch, flame has proved to spread very fast along neighboring surfaces in a compartment. Because flame spread rate of urethane foam was very high, other instant endeavor for extinguishment has proved being useless in fire accident site. Therefore effective protection method has designed to prevent fire on the urethane foam surface and its ability was tested by large scale experiments by pool-pan flame. Consequently, vermiculite plaster covering method surface of urethane foam has proved to be best way when it comes to preventing fire in site.
A Study on the Comparison of Characterization of Environmental Impact of Major Building Material for Building Life Cycle Assessment
Roh, Seung-Jun ; Tae, Sung-Ho ; Kim, Tae-Hyoung ; Kim, Rak-Hyun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 93~100
The purpose of this study is to compare characterization of environmental impact of major building material as part of developing the building life cycle assessment program. For this purpose, the theoretical consideration of the life cycle assessment and environmental impact category was performed and the direction of the study was set up. That is, the major building material in the global warming potential view was drawn against the building and LCI database was selected. The classification was performed about 6 kinds of environmental impact categories that it specifies in KS I ISO 14025 based on the reference substance and impact index. And the environmental impact for the major building material was calculated through the characterization. Meanwhile, the environmental impact of major building material in the same category was compared based on the characterization of environmental impact which was calculated in this study. As a result, the formulation of cement ready-mix concrete is a major factor in determining the characterization of environmental impact, and characterization of environmental impact of cement is determined, depending on the content of the alite and belite.
A Study on the Electrical Characteristics of Electro Heat-Generation Mortar Mixing Amorphous Graphite
Kim, No-Dong ; Park, Sang-Joon ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 101~108
The aim of this study is to investigate the reproducibility of electro heat-generation that has been the biggest problem of electro heat-generation mortar. At first, electric properties, such as heat-generation, electric resistance, electric current and temperature coefficient, of electro heat-generation mortar mixing amorphous graphite were investigated under various curing conditions. The electric properties of electro heat-generation mortar was secondly investigated under various shapes of specimen. As a result of the study, the maximum temperature of mortar was higher in curing conditions of steam curing and wet curing. In case of Amorphous graphite addition of 50% and at age of 7 days, the maximum temperature of wet-cured and steam-cured specimens were respectively
, while autoclave-cured and dry-cured specimens showed the maximum temperature of
. The temperature coefficient of mortar with graphite addition of 50% was showed positive level similar with metals, while the temperature coefficient of mortar with graphite addition of 35% was showed negative level similar with carbon and electrolyte. It is finally analyzed that the mortar specimen with graphite addition of 50%, cross-section area of
and length of 74cm~158cm is most effective for heat-generation in this study.
Effect of Maintaining Time of Formwork on Strength and Dry Shrinkage of Mock-up Concrete in Cold Weather Condition
Cho, Han-Byung ; Kim, Hak-Young ; Lee, Young-Do ; Jung, Sang-Jin ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 109~116
This study examined the strength and durability of Mock-up concrete members according to the maintaining time of concrete form after concrete placement in winter season. Existing related research targets estimation of demolding and reducing the construction time due to low temperatures in winter, but atmospheric dry conditions as well as low temperatures need to be considered. The low temperatures and dry climate evaporate moisture on the surface of concrete members rapidly, so defects like cracks and reduced durability on the surface of the concrete members at the early time of curing with not enough hydrated condition may occur. As a result of the experiment of strength properties according to the maintaining time of 6 individual concrete forms by time differences, it shows low intensity and dynamics characteristics in the long-term concrete age as well as the initial age in case of Mock-up members demolded after 18 hours and 24 hours after placement. It is considered that the form protects concrete from the lateral pressure and external environmental factors until it is cured, and maintains the effect of insulation and watertight.
The Checklist & Manual Development for Safe Dismantling of Asbestos Building Materials
Jeon, Ra-Yi ; Yu, Yong-Sin ; Lee, Chan-Sik ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 117~124
Although the production and use of the asbestos building materials were prohibited, its dangerousness is increasing due to dismantling of the asbestos building materials used in the past. This study aims to develop a checklist for the safe and environmental-friendly removal of the asbestos building materials. In oder to develop a checklist, the researchers identified the 20 major factors that can reduce the risk cased by exposure to asbestos, through reviewing the related the literatures and interviewing a number of experts. A survey was distributed to those who manage asbestos dismantlement at the construction sites. The reliability of the major factors for management was confirmed through a reliability analysis, and four super-ordinate factors were identified through a factor analysis. In order to identify key factors that need attention, the importance degree of each key factor was calculated by using the Analytic Hierarchy Process (AHP) method. The checklist was separated as the category, importance level and the rank of the factors for easy search if necessary, and it also consists of a 'Yes/No tick box' to make it possible to check. To increase the adaptability and usefulness of the checklist, manuals for 20 items were also developed based on the analysis of relevant literature and regulations. The manuals are made in the form of the guidelines and consist of category, legislation and guideline.
Analysis of the Present Condition for Major Subcontractor and Process in Overseas Building Construction
Kim, Hwa-Rang ; Ock, Jong-Ho ; Jang, Hyoun-Seung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 125~132
In 2012, Korean overseas construction market has achieved 64.9 billion dollars of contract amount and its amount has increased since the mid of 2000's. However, it is the time to consider countermeasures on the change of overseas construction environment. As the Local Contents Policy is getting strengthened, an ordering organization forces a constructor to take local materials and subcontractors over regular part, and even restrict manpower of the constructor. For this reason, the importance of subcontractor management is especially emphasized in the overseas market. In order to select major subcontract processes, professionals based on Master Format on the overseas construction projects were participated to fill up questionnaires. The collected data were analyzed by Benefit-Structure Analysis(BSA) model. The findings of this study include: (1) the seven subcontract processes are positioned in the area of importance control factor; and the eight subcontract processes are positioned in the area of maintenance/control factor. (2) Securing management capability is needed for the processes in the area of importance control factor. Also, for maintenance/control factor area, sustainable management system is required. This research suggested and evaluated the major managerial subcontract processes for domestic construction company planning to extend to overseas market. Although this study is carried out with some limitations, it is expected to provide primary information and strategies for selecting and managing subcontractors. The further research is planned to include the survey of the various areas and work types for buildings to derive the regional characteristics.
Analysis of CM Project Trend and Cost Estimation in the CM Industry
Huh, Young-Ki ; Kim, Kyoung-Uk ; Kim, Dae-Young ; Ahn, Hye-Ryeon ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 7, 2013, Pages 133~140
According to public announcement meterial from Ministry of Land, the result of CM as increasing for 20% more than last year, it keep to steady growth even Construction Market's recession. But Regardless of various revisions made, in accordance with its present condition, construction management struggles to deal with unacceptable assessment costs and, therefore, hinders the overall development of the industry. As a result, this research is conducted to analyze fifty counts of illogical calculations ordered by the public CM corporations and examine the existence of irrationality among the expenses.