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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
A Study on Structural Effects of Building-augmented Wind Turbine on Building
Lee, Jong-Won ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 3~10
Green building can be realized by energy conservation, environmentally friendly design, and active application of new and renewable energy. Wind power has technical and economic advantages and especially can use excellent wind source at a high place. Building-augmented wind turbine, installed at outer wall or rooftop of high-rise building, generates electrical power using excellent wind source. In this study, a method to investigate structural effects of building-augmented wind turbine on building is presented. Dynamic analysis for horizontal-axis upwind wind turbines is carried out to estimate additional load due to the wind turbines, and structural behaviors of an example building by changing location of the wind turbines are analytically studied. Then natural frequencies of the wind turbines and example building are calculated to check the resonance problem.
A Matlab Code for Structural Topology Optimization
Lee, Sang-Jin ; Park, Gyeong-Im ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 11~18
In this paper, we provides a two-dimensional topology optimization (TO) code which is an extended version of the 99-line TO code written by Sigmund. The 99-line TO code has been very popular for both engineers and researchers. However, it is only applicable to the rectangular design domain with square finite element (FE). Therefore, a new TO code is here produced by the extension of the optimality criteria and the filtering process. In addition, the input routine and FE analysis module are introduced to deal with more general TO problems. Numerical examples are carried out to verify the capability of the present Matlab code. From numerical results, it is found to be that the present code can successfully optimize arbitrary shapes of two-dimensional structures without any restrictions. Finally, we provide the present code as a prototype of structural TO Matlab code for future research works.
Analytical Modeling of Reinforced Concrete Frame Infilled with Hexagonal Blocks
Chang, Kug-Kwan ; Yoo, Ha-Na ; Seo, Dae-Won ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 19~26
Reinforced concrete framed structures in urban areas are usually infilled with interior and exterior masonry walls. However, the effect of masonry infilled wall is often neglected in the analysis of infilled walls by structural engineers, as it is in current practice. But, experimental studies revealed that hexagonal block infilled walls have favourable effects on strength and stiffness of structures. The objective of this paper is to propose a nonlinear macro model for the lateral load analysis of reinforced concrete frames infilled with hexagonal blocks. The analysis procedure, based on the experimental and analytical studies reported in the literature, accounts for the effect of infilled walls. The results of the analyses were compared to damage and residual cracks observed on the masonry infilled walls. Analytical studies conducted shows that hexagonal block infilled wall could adequately be modeled by single and double diagonal compression struts.
Aircraft Impact Theory and Mass Model for the Missile-Target Interaction Analysis of Large Aircraft
Lee, Kyoung-Soo ; Kim, Hyo-Jin ; Han, Sang-Eul ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 27~34
In this paper, we model the total mass and mass distribution to simulate the missile-target interaction analysis of aircraft. And the difference of mass of fuel was also considered, because it is about 40 percent of total mass when it is full-filled. The aircraft FE model was developed by determining mass distribution. And aircraft FE model was verified by impact analysis simulated by AUTODYN. Through the developed aircraft FE model, the impact on the various surface of target, which cannot be analyzed by Riera model, can be analyzed by the missile-target interaction analysis. The large commercial B747 aircraft was used for the missile which is using for long distance flight. To determine the mass model of aircraft, the Riera approach was used for the reference impact time history graphs which provided by OECE-NEA (2002) and Arros and Doumbalski (2007).
Study on Enhancement of the System to Improve the Quality through Analysis of the Structure Crack and Structure Supervision of the Reinforced Concrete Structures
Choi, Jung-Wook ; Kim, Byung-Yun ; Cho, Seung-Ho ; Kim, Sang-Shik ; Kim, Dai-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 35~42
In this study, the surveys and the interviews have been conducted to prepare measures for structure crack, with analyzing the cause of the structure crack, which appeared on the structures. In addition, we have intended to suggest the proposals for enhancing the system to reduce the crack and to improve the quality of the reinforced concrete structures by analyzing the practices and the system of structure supervision. The proposed conclusion is shown as following. 1) Consolidate the ordinances related to construction supervision 2) Importance on design supervision, such as architecture, structure, and construction 3) Importance on construction supervision 4) New establishment of regulations related to structure supervision.
A Study on the Estimate of Peak Factor
Oh, Jong-Seop ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 43~50
This study is concerned with the estimation of peak factors in the major cities reflecting the recent meteorological with wind data samples(yearly 2003-2012). Customarily, in the area of wind effects on structures, peak factors for Gaussian processes have been widely used in most codes and standards to estimate the expected extremes to wind loads and the related response for design application of tall buildings. However, this factor generally yields nonconservative values when applied to non-Gaussian processes, e.g., a time history of fluctuation wind speeds around tall buildings. The estimation of the extreme of non-Gaussian load effects for design applications has often been treated tacitly by invoking a conventional wind design(gust load peak factor) on the basis of Gaussian processes. This assumption breaks down when the loading processes exhibits non-Gaussianity, in which a conventional wind design yields relatively non conservative estimates because of failure to include long tail regions inherent to non-Gaussian processes. This study seeks to ascertain the probability distribution function, fluctuation wind velocity random processes and peak factor from recent wind data with largest yearly mean wind speed.
Experimental Study on the Enhancement of Early Age Compressive Strength of Mortar cooperated Ground Granulated Blast Furnace Slag with CSA stimulants
Kim, Jin-Hyoung ; Lee, Han-Seung ; Lee, Kang-Jin ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 51~58
The purpose of this study is to improve the early age compressive strength of concrete (1 age, 3 ages) with Ground Granulated Blast Furnace Slag. Therefore, we performed several experimental studies using the new Calcium Sulfo Aluminate(CSA) as a strength accelerator specially early age at the mortar level. we considered the studies of the early-age strength enhancement through early age strength and the nano-analysis of mortar that mortar contains Ground Granulated Blast Furnace Slag with new CSA. As a result, It was showed that the CSA of the fast hydration reaction was rather decreased hydration of the slag. But this could be solved by using TTA. The compressive strength was showed 130.7% higher than OPC on 1 age. And, the compressive strength was showed 93.4% higher than OPC on 3 ages. So, we know that new CSA is very effective to improve the early ages compressive strength in mortar contains Ground Granulated Blast Furnace Slag.
Development of Prediction Equations of High and Ultra-High-Strength Concrete with Compressive Strength from 55 to 220MPa for Design Application
Shin, Hyun-Oh ; Lee, Seung-Hoon ; Lee, Woo-Jin ; Yoon, Young-Soo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 59~66
Increasing need for ultra-high-strength concrete as a primary structural material in high-rise building construction has underlined mechanical properties of ultra-high-strength concrete as one of the key consideration in design. Unfortunately, current code provisions are the results of tests done on normal strength concrete or high-strength concrete and these provisions may neither be adequate nor safe for structural member with ultra-high-strength concrete. Accordingly, regression analysis was carried out using experimental data from this study and data from the literature and prediction equations for mechanical properties such as compressive strength gain with time, splitting-tensile strength, flexural strength, modulus of elasticity, and poisson's ratio were proposed. The reliability of the proposed equations were assessed by R2 value and the proposed equations have been found to give a good representation of the actual mechanical properties of concrete. The validity of equations recommended by KCI 2007 for estimating mechanical properties of concrete can be extended for high-strength and ultra-high-strength concrete with average compressive strengths ranging between 55 and 220MPa.
Autogenous Shrinkage and Engineering Properties of High Strength Mortar incorporating Waste Cooking Oil depending on the Types of Emulsifier
Han, Min-Cheol ; Han, Sang-Yun ; Jo, Man-Ki ; Lee, Dong-Gyu ; Kim, Tae-Cheong ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 67~74
In this paper, tests were carried out to investigate experimentally the effect of emulsifying agent type on reduction of autogenous shrinkage and engineering properties of the waste cooking oil added high strength mortar with 20% of W/B. Eucarol (EWCO-1) and Emulsion (EWCO-2) were applied for emulsifying agent. Existing waste cooking oil(WCO) and shrinkage reducing agent(SR) were also used and compared. Test results indicated that the increase of shrinkage reducing agents used in this study resulted in a decrease of flow and, contents and compressive strength. However, the use of EWCO-2 made the mortar reduce the decrease of their physical properties. For autogenous shrinkage, it was found that the use of shrinkage reducing agent also led to reduce the autogenous shrinkage. Moreover, the use of EWCO-2 had comparably larger reducing effect on autogenous shrinkage than other agent.
Life Cycle Assessment for Carbon Emission Impact Analysis of Concrete Mixing Ground Granulated Blast-furnace Slag(GGBS)
Kim, Tae-Hyoung ; Tae, Sung-Ho ; Roh, Seung-Jun ; Kim, Rhak-Hyun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 75~82
Concrete produced with admixtures, such as ground granulated blast-furnace slag(GGBS), which has a low
emission base unit, is frequently used in Korea for active studies on the decrease of
emissions in the cement/concrete industry. However, the
emission base unit for admixtures such as GGBS and fly ash(FA) has not yet been developed in Korea. Therefore, this study developed a
emission to meet the domestic situation base unit for GGBS in accordance with the LCA technique in ISO 14044 regulation. Also, GGBS production company was selected in Korea and assessed life cycle
emission. As a result, life cycle
emission of GGBS has been assessed as 0.0418kg-
. In total
emission, manufacturing step was the highest percentage and the electric power of the manufacturing step accounted about 43% of the total
emission. And raw material step and transportation step has been 17%, 8% of the total
emission of GGBS concrete mixture according to increased strength showed a tendency to increase.
A Study on the Application Characteristics of the Hybrid Resin Mixed the Silica for Covering the Surface of Concrete Floor
Oh, Sang-Keun ; Choi, Sung-Min ; Chae, Woo-Byung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 83~90
The thermo-hardening epoxy resin is widely used in the various industries including the construction and civil engineering for its adhesiveness, chemical resistance and electric properties. However, when epoxy resin used finishing material for concrete slab, it had appeared to the peeling by decreasing bond strength in wet condition, weakness of impact, lack of film rigidity and corrosion, lack of eco-friendliness, and noise in car driving. When hybrid resin checked as the optimal mixture ratio applied on the surface of concrete floor, we want to know the application characteristics of the hybrid resin integrated the silica for covering the surface of concrete Floor by evaluating the mechanical strength changing and the environmental effect in the parking lot by testing the wheel load characteristics. As a result of wheel load test and the other test related on indoor environmental in this study, the hybrid resin is judged to the suitable materials for the concrete floor than the epoxy resin.
A Experiment Study on the Mechanical Properties of the PVC Waterproofing Sheet by the Patterns of the Reinforcing Fiber
Choi, Sung-Min ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 91~98
PVC waterproofing sheet is applied in exposed form on the rooftop of building. Most of the PVC waterproofing sheet of exposed type are improved mechanical properties of waterproofing sheet through laminating the patterns of reinforcing fiber. However, existing reinforcing fiber is would be occurred defect of waterproofing layer tear, because it has a anisotropy. The test targets are reinforcing fiber of three types. and the test items are total six items that is specified by KS F 4911. As a result of test, while A-specimen and C-specimen have not the anisotropy, B-specimen has the anisotropy. B-specimen which is applied patterns of reinforcing fiber of I-type, is wide variations in the mechanical properties. C-specimen which is applied patterns of reinforcing fiber of Z-type, is not wide variations in the mechanical properties because it has the anisotropy.
Slumping Behavior and Segregation Resistance of Ultra-Lightweight Concrete
Ahn, Jae-Cheol ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 99~106
This study is to investigate rheological properties(slumping behavior & segregation resistance) of ultra-lightweight concrete and present fundamental data for mixing design of ultra-lightweight concrete. As a result of this study, it is suggested that slump target for quality control of fresh ultra-lightweight concrete will be set up differently from normal concrete. Because, unit weight of ultra-lightweight concrete is much smaller than normal concrete, though rheological constants(yield value) of NC is the same as LC's, these slump values are very different. And, segregation resistance can analysis as quantitatively taking advantage of unit weight of ultra-lightweight concrete. lightweight concrete using ultra-lightweight aggregate showed segregation when the slump is more than 20cm, also the more quantity of paste have, the movement of aggregates cover a wide range.
A System Dynamics Analysis Model for Housing Demand-Supply according to the Changes in the Household Structure - Focused on the Market Change of Single-person Housing in Gwangjin-Gu, Seoul -
Oh, Jin-Hee ; Yi, June-Seong ; Shin, Seung-Woo ; Son, Jeong-Wook ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 107~116
The current changes in household structure affect the residential environment and lifestyle of households. Especially the change of requirements to spec of housing has been considered to provide housing to meet the demands. As an important factor of national economy, the housing market needs to respond elastically to the change of demand caused by the new trend of household structure. However, owing to the complexity of housing market, the event-oriented approach methodologies have several difficulties and shortage to forecast housing market. Herein, System Dynamics(SD) methodology has been applied to provide understandable reasons in detail on how the housing market responses to the change in the household structure. Based on the casual loop diagram of housing market, the simulation model was constructed using Vensim DSS 6.0.1, and the case of single-person household in Gwangjin-Gu, Seoul was simulated. The result of this study provides the demand-supply model as foundation of an analysis and forecast the housing market according to the change in household structure. Due to the lead time of housing supply, however, the imbalance between supply and demand had caused an insecure housing market to be solved by government and stakeholders of market. The suggested model is expected to support decision making on the housing policy and business.
Improving Direction of the Differing Site Conditions Clause in Design-Build Contract
Cho, Young-Jun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 117~124
In performing construction contract, differing site condition cannot be avoided due to it's specificity. Because of the advent of new material and new methods with industry development, many facilities have been built on and below the site at the same time. In the construction performed in urban areas or the large-scale underground project, liability for the design can be transferred to the other contract parties according to contract type. If the risk is not effectively managed through contract documents, then various issues faced in the construction site may not be resolved and the possibility of claim is likely to increase. Until now in Korea the research for differing site conditions(DSC) claim has been insufficient. Therefore, in this study, the improvement direction of differing site conditions were suggested in order to prevent disputes due to different site conditions.
BIM Applicability Analysis of the PMIS Modules using Component Business Model
Lee, Jong-Ho ; Eom, Shin-Jo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 125~132
Recently, the enactment of a construction industry promotional law encourages the increasing application of construction management to the Korean construction industry. Furthermore, given the large size and high complexity of major projects, use cases of PMIS(project management information system) are increasing rapidly with the application of BIM (building information modeling) to project lifecycles. The objective of this study is to suggest the order of priority of BIM application to PMIS component modules through an analysis of the CBM (component business model) of PMIS, investigation of IFC (industry foundation class) / BIM data connection, and analysis of the BIM applicability-expectation matrix to the PMIS. The results of this study show that BIM can be applied to components such as design management, cost management, and project administration mainly in the construction stage. This results of this study would be helpful to decision makers developing BIM-based PMIS applications.
Analyzing Expected Effect on Construction Industry and Future Direction of the Direct Construction Control Method for Public Apartment Construction Projects
Song, Sang-Hoon ; Sohn, Jeong-Rak ; Bang, Jong-Dae ; Shin, Dong-Woo ; Kim, Ki-Hyun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 133~140
The direct construction control method(DCCM) is based on the direct contract between owner and specialty contractors without involvement of a general contractor. The application of the DCCM, originally, aimed to cut down the public rental apartment price, and the introduction of DCCM to public construction has gained a plenty of attention from the construction sector as it causes major change in current production and profit structure. The purpose of this study was to suggest its application strategy to public construction projects based on the various opinions about DCCM collected from the survey targeting related stakeholders. The results of survey showed that the DCCM is expected to be relatively inefficient in project performance area. Despite its strength over the cost aspect, many respondents expect that it has a negative effect on the time, quality, safety, and environment performance. However, DCCM is considered to contribute to enhancing the competitiveness of constructors and reinforcing fair trading with transparency. As the preparation stage, the DCCM is suggested to be continuously applied mainly with the small-scale projects till the technical capability is ensured along with legal amendment.
Analyzing the Image Status of Construction Industry and Its Improvement Measures
Shin, Won-Sang ; Son, Chang-Baek ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 10, 2013, Pages 141~148
Construction industries in South Korea have taken the lead in reconstructing the nation in the ruin of war in past 20C and the pain of poverty, played a role in the foundation of economic development and taken the important responsibility for improving economic development of the nation and the quality of life by establishing industry based facilities and national life based facilities for development of techniques. Recently, they also account for a great part of economic growth of the nation as a provider of foreign currency as there are many orders of overseas constructions by overseas expansion. Construction industries are based on such positive images while they are considered as negative images such as rough work, poor construction and 3D jobs. As they have influenced teenagers who decided their careers in construction industries, there are many issues such as the lack of young technical talented people and the evasion of having a career in construction industries. In this study, we examined the actual images of construction industries, found the problems on current improvement activities of images in domestic construction industries and conducted a study to suggest solutions of improving images of domestic construction industries by conducting a survey with vacational high school students and academic high school students in order to attract young talented people.