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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
Seismic Performance of Lead-Rubber-Dampers Attached on Building Exterior
Jeon, Seong-Ha ; Park, Ji-Hun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 3~11
New detail of lead rubber bearing installed between an existing building structure and an added steel frame for seismic retrofit is proposed and verified. Dependency of the damper's characteristics on deformation amplitude and frequency is evaluated through cyclic loading tests. The elastic stiffness, yield displacement and post-yield stiffness ratio of the bi-linear model based on experimental force-displacement relationship have considerable dependency on amplitude and frequency. Bi-linear models of the test specimen is applied to the numerical analysis of an existing masonry-infilled RC frame. Proposed installation scheme of lead rubber bearing mitigates displacement response of the RC frame effectively below collapse margins determined from a nonlinear pushover analysis, and shows slightly dependency of the seismic performance on the idealized model characteristics.
Analysis on the Wind Flow Characteristic of Around Area according to Installation of Road Facilities(Culvert)
You, Jang-Youl ; Paek, Sun-Young ; You, Ki-Pyo ; Kim, Young-Moon ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 13~20
The start of the freeway era in Korea has led to a dramatic increase in the demand for road traffic between cities, and the following damages have been emerging. Examples include sunshine and ventilation disturbance emerging from the construction of roads, bridges, and tunnels which have led to crop damages. The ventilation disturbance damages due to the wind resulting from freeway facilities (noise barrier, road embankment) are continuously on the increase. Accordingly, the purpose of this study is to use an culvert to research methods which can promote wind movements which have been modified from road mounding, perform wind tunnel test from different wind speed, compare changes in the overall air current conditions following the number and form of culvert, and discover the ventilation effects which promote smooth wind flow.
Development of Optimum Design Program of Sinusoidal Corrugated Web Beam Using Differential Evolution Algorithm
Shon, Su-Deok ; Yoo, Mi-Na ; Lee, Seung-Jae ; Kang, Joo-Won ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 21~28
Corrugated steel plates offer several advantages that make them preferred materials for use in various structures including bridges and steel frames. Aside from aircraft design, the corrugated steel plate has also been applied to container, bridges, PEB system, etc. Corrugated steel plates have also been the subject of various research efforts. However, these studies focus on the strength of the beams and the buckling analysis of corrugated steel plates. Optimum design of corrugated web beam remains insufficient. Therefore, this study focuses on the structural design program of sinusoidal corrugated web steel beams using Differential Evolution algorithm. A simple beam model is selected as a numerical example to verify the program. The optimum program is compared with the program using Genetic Algorithm.
Flexural Behaviors of Composite Prestressed Double-T 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 12, 2013, Pages 29~36
KCI(Korea Concrete Institute) structural concrete design code provides provisions for composite concrete members in Chapter 17. However there are no provisions for the flexural strength of composite concrete members. So, the provisions for prestressed members in Chapter 9 are applied to calculate the flexural strength of composite concrete members. The equation to estimate the nominal flexural strength of prestressed members should be validated to apply to composite concrete members. In this paper, the experimental studies and theoretical analysis to investigate the validity of this equation for composite concrete members are presented. 4 specimens whose parameters are the amount and location of shear connector were tested under 4-point bending. Test results show that the full flexural strength of composite section can be developed without shear connectors in case the shear span-to-depth ratio is about 5.6. It is concluded that the equation for flexural strength of prestressed members may be used to estimate the full flexural strength of composite concrete members, because the flexural strength of the prestressed double tee slab with structural concrete topping computed from this equation is more conservative than the flexural strength calculated from strain compatibility and equilibrium method.
Influencing Factors of the Deflection of Floor Sound Insulation Systems
Lee, Bum-Sik ; Jun, Myoung-Hoon ; Lee, Jung-Yoon ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 37~44
Approximately 60 percent of Koreans are living in apartment houses in 2013. One of the big residential environment concerns in living apartment houses is noise pollution induced by floor impact sound. Korean government regulates several standards on floor soundproofing to reduce the impact noise of apartment houses. The maximum of light-weigh impact sound and heavy-weigh impact sound was enforced to be lower than 58dB and 50dB, respectively. To reduce floor impact sound, soft resilient materials or resilient materials with small slab contact area are commonly used, which are placed between concrete slab and finishing materials. Though soft resilient materials are satisfied with the limitation of light-weigh impact sound or heavy-weigh impact sound, these materials may not support load on the floor. As a result, there is some possibility that cracks develop on the finishing mortar and the floor sags. This paper investigates the influencing factors of the deflection of floor sound insulation systems. An analytical method was used to investigate the influencing factors. The analyzing results indicated that the modulus of elasticity of resilient materials, loading point in slab, and weights were most significant influencing factors to induce the deflection of floor sound insulation systems.
An Analysis of Structural Behaviors during Construction for Twisted High-Rise Steel Buildings
Choe, Mi-Mi ; Kim, Jea-Yo ; Eom, Tae-Sung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 45~53
This study presents the analysis procedure and results for the structural performances of twisted tall buildings under construction. Six sample models of 60-story twisted steel structure in diagrid system or braced tube system were selected, and design load requirements during construction for the buildings were analyzed. At construction stages of 20 stories completion and 40 stories completion, the structural behaviors for wind and seismic loads were presented and compared with those of completed buildings. Also, for load combinations of gravity loads, seismic loads, and wind loads, the design loads of structural members were calculated, and design strength ratios at construction stages and after completion were compared. The analyzed results may be used as guidelines for structural design or construction planning.
Development of Eigen Analysis Computer Program Considering Load-Dependent Ritz Vectors
Jung, Sung-Jin ; Lee, Min-Sub ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 55~62
The use of well selected Ritz vectors is shown to be very efficient in the dynamic analysis of large structures using modal superposition method. However, Ritz vectors are mostly used in the dynamic analysis of civil structures, they are rarely used in the dynamic analysis of building structures. Consideration of the trend toward larger building structures, it is necessary to study on the use of Ritz vectors in the building structures. Therefore, in this study, methods for the computer program development based on Ritz vector generation algorithm are investigated first, then some algorithms available in case of a computer program development are studied on the basis of investigated methods. On the basis of studied algorithms, a computer program sNs is developed, the results by this program is compared with the results by a program SAP2000 and theory for the verification of their accuracy.
Prediction of Shear Strength of Slender Reinforced Concrete Beams with and without Shear Reinforcement Using ANFIS
Sim, Woo-Chang ; Choi, Kyoung-Kyu ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 63~71
An analytical method based on fuzzy theory was developed for accurate evaluation of the shear strength of slender reinforced concrete beams with and without shear reinforcement. 636 experimental datasets of shear tests of simply supported reinforced concrete beams, which cover a wide range of design parameters, were used for training and validation of the proposed fuzzy-based model. The strength prediction by the proposed model was compared to those by current design codes including the American code (ACI 318-11) and the Euro code (EC2). The results showed that proposed model based on the fuzzy set theory can properly address the complicated interaction between various modeling parameters, and the fuzzy-based model enhances the prediction of the shear strength.
Evaluation of Connection Stiffness of Test-bed Hanok Using a 1/4 Scale Two-Storied Model
Kim, Yeong-Min ; Lee, Seul-Gi ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 73~80
In this study, the lateral stiffness of the 1/4 scale two-storied model of test-bed Hanok was analyzed according to the vertical loading and target lateral displacement. According to the experiments, lateral stiffness of Hanok was increased as vertical loading increased, but, on the same vertical loading, it decreased as the target lateral displacement increased. We proposed formulas for the relative rotational stiffness of basic connection types of test-bed Hanok reflecting their geometric characteristics, and extracted those stiffness by applying results of static lateral loading experiments to the static analysis model. The extracted relative rotational stiffness were on the range of 0.05~0.35 according to the basic connection types and these values were verified using impact hammer test and eigenvalue analysis, and we concluded that those values were on the rational range.
A Study for Unit Requirement and Material Classification of Construction Wastes for Improving Rate of Material Recycle
Kim, Byoung-Il ; Song, Tae-Hyeob ; Lee, Sea-Hyun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 81~88
The quantity of construction wastes have been continuously increasing 178,120ton/day in 2010 compared to 148,489ton/day in 2004 such as concretes, asphalt concretes, metals, woods, synthetic resins, etc due to increased demolishing old apartments and expanding social facilities. Therefore, national efforts including department of environment, many universities and research centers have been studying to establish an effective system for reducing amount of waste, as well as improving rate of material recycle of construction wastes. One of the very best is to set up the exact basic unit of construction wastes for both new construction and demolition work. The purpose of this study was to classify construction wastes based on rate of material recycle and analyze basic unit of new construction and demolition work from analysis of a lot of data from construction company, as well as a field study. The types of construction wastes were classified into six for new construction and five for demolition work. The results for units of construction wastes showed that generation of concrete classes and mixed wastes was significantly greater than others specifically, apartment buildings. In conclusion, exacting separation and sorting efforts at on-site require to reduce waste amounts and activate rate of material recycle, as well as efforts on establishing systemized management.
Analysis on Behavior of Adiabatic Temperature Rise of Concrete considering Final Setting Time
Ham, Eun-Young ; Kim, Gyu-Yong ; Koo, Kyung-Mo ; Kim, Hong-Seop ; Lee, Eui-Bae ; Yoo, Jae-Kang ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 89~96
In this study, it was conducted to evaluate a wider range of properties of adiabatic temperature rise in placement temperature condition considering hot weather, and temperature rise and temperature rise rate focused on cement content excluding replacement ratio of mineral admixtures were evaluated and compared with binder content. In order to set clear standard of adiabatic temperature rise in the previous section of hydration heat prediction equation was set by using time constant
considering final setting time and compared with measured values. As a result, temperature rise, temperature rise rate increased as cement content increased and especially it was confirmed that placing temperature affects temperature rise rate dominantly. In addition, properties of adiabatic temperature rise analyzed focusing on cement content showed higher correlation than the one analyzed focusing on the binder content. It was also showed that
in the previous section of hydration heat was closely indicated with final setting time and the prediction equation.
A Study of the Pore Characteristics of Hydrated Fly Ash Cement Containing Calcium Sulfoaluminate
Song, Tae-Hyeob ; Park, Ji-Sun ; Lee, Sea-Hyun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 97~104
Fly ash used as an admixture material in cement has been applied to mass concrete amongst others for reduction of hydration heat and regarded by the cement industry as an essential material in concrete manufacture that reduces greenhouse gas emission and has a cost-saving effect. However, the downside of using fly ash is that it reduces the initial strength of concrete and resistance to neutralization. In this study, it was examined whether addition of calcium sulfoaluminate (CSA) could improve the initial strength of concrete and the micropore structure as a means to ameliorate the reduced initial strength and neutralization resistance caused by increased porosity resulting from the use of fly ash. Up to 30% of cement was substituted with fly ash, while the amount of CSA substitution was 8% of the fly ash weight. The results of the experiment showed that increasing the amount of fly ash resulted in an increase in the distribution of pores with a diameter of more than 0.1um. In particular, 30% substitution resulted in higher porosity distribution in the 20nm~0.1um and over 1um distribution ranges compared to cement. On the other hand, adding CSA in an amount equivalent to 8% of the fly ash weight resulted in the pores having an average particle diameter of 0.18um with a relatively low distribution of pores that are larger than 0.5um. Based on this result, it was determined that the use of CSA would enhance the initial strength and neutralization resistance.
A Study on the Estimation of Rebar Detection by Electrical Resistivity Method
Lim, Young-Chul ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 105~112
This study aims to estimate the effect rate of surrounding rebar at the apparent resistivity measurements. To this end, the analysis range of Resistivity Estimation Model (REM) is extended from right above the reinforcement to some distant area. Response voltage and apparent resistivity using an improved REM showed that the effect of reinforcing bar was well reflected in a distance area as well as right above the reinforcement. In addition, the apparent resistivity ratio exhibits the effect of surrounding rebar in a quantitative measure. Therefore, this method could be used as a helpful indicator to estimate concrete resistivity and to detect the location of rebar.
Analysis of Chemically Resistant Characteristic to the Liquid-Applied Membrane Waterproofing Materials of the Rapidly Hardening Sprayed Type Applied on the Concrete Structure
Oh, Sang-Keun ; Kim, Su-Ryun ; Choi, Eun-Kyu ; Choi, Sung-Min ; Kim, Young-Keun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 113~120
In this study, the chemical resistance of polyurea resin waterproofing and anti-corrosion materials that is applied to the social infrastructure was analyzed. The chemical performances were realized by the validation test for understanding as detailed point of view to the characteristics of the polyurea waterproofing and anti-corrosion Among the specimens that are the polyurea resin waterproofing and anti-corrosion, polyurea resin waterproofing and anti-corrosion, polyurethan-polyurea waterproofing and anti-corrosion, and polyurethane waterproofing and anti-corrosion were analyzed as the specimen. As a result of chemically resistant characteristic to three kinds of polyure type materials, it's polyurethane, polyurea-urethane, and polyurea were arranged in the order. This order is generally predictable order that is expected by any user, but it was settled first by the quantitative evidence of chemical evaluation in this time. And, the result in this study will be utilizing as a basic data for establishing the quality standards which are able to judge the chemically resistant characteristic of polyurea resin waterproofing and anti-corrosion materials.
Measuring Managerial Efficiency of Korean Construction Firms using Data Envelopment Analysis-Tier and Cluster Analysis
Ryu, Hyeok-Jun ; Park, Jung-Lo ; Kim, Ju-Hyung ; Kim, Jae-Jun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 121~128
This study aims to study the efficiency of corporate governance structure of domestic construction companies using data envelopment analysis-tier and cluster analysis. The authors analyzed thirty five construction firms whose main business are in architectural and civil construction. We selected these companies based on their construction capacity rank of 2012 and the availability of credible financial statement. So, analysis of this study was conducted in two steps. First step, we conducted an analysis of efficiency of companies using data envelopment analysis-tier. Second step, we classified companies in same corporate governance structure using cluster analysis. After two steps, we presented result of benchmark to improve inefficient companies.
Effects of the Qualities of Ordinary Portland Cement on Chloride Migration of Offshore Concrete
Park, Sang-Joon ; Sho, Kwang-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 129~136
In this study, effects of the qualities of ordinary portland cement on chloride migration of offshore concrete were evaluated. Firstly, physical property and chemical composition of six domestic type I ordinary portland cements were investigated. And properties of chloride resistance of concrete using six cements were tested. As a result, even thought six cements met the criteria of KS L 5201, physical property and chemical composition of cements were varied with the kinds of cement. The density and fineness of cements showed
, respectively. In mineral composition, the content of
showed the range of 16.1 % to 47.4 % and 21.6 % to 54.1 %, respectively. The chloride content of concrete was proportional to the chloride content of cement. Also, it could be analyzed that over 65 % of the chloride content of concrete came from cement. Compressive strength of concrete had the difference of maximum 24.8 % at age 7days and maximum 15.7 % at age 28days depending on the kinds of cement. Chloride diffusion coefficient of concrete showed the range of
at age of 7 days and the range of
at age of 28 days. Based on chloride diffusion coefficient, it could be analyzed that chloride ingress time of concrete had the difference of maximum 1.5 times depending on the kinds of cement.
An Experimental Study on Fire Resistance and Sound Insulation Performance for Application of Partition Wall between Housing Units of Wood Framed Light Weight Wall with Loess Board
Cho, Kyung-Suk ; Yeo, In-Hwan ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 137~144
This study tested, in Long-Life Housing, partition wall between housing units which composite with middle lintel and Loess board, whether corresponded with requirements for performance criteria related with codes. It was get a performance level of Loess board that compared with gypsum board which used to partition wall components generally. It was tested requirements for fire resistance and sound insulation performance of partition wall in Korea Building Code. The results are, a insulation of the wall with gypsum board was better than Loess board, integrity of wall with loess board was better than gypsum board in fire. The sound insulation was, Loess board was better gypsum board due to porosity of loess and rice straw. Therefore, the partition wall between building units which composite with gypsum board on inside layer and Loess board on outside layer, with glass wool for insulation, is prefer to apply.
Development and Field Applicability.Technical Feasibility Analysis of Automated Exterior Wall Painting Robot for Apartment Buildings
Choi, Seung-Ho ; Na, Eun-Ge ; Kim, Young-Suk ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 12, 2013, Pages 145~153
The exterior painting work of apartment houses is conducted every 5 years during the buildings life cycle. It has been investigated that the construction industry has shown increase in size and volume that the potential market of the painting work is also expected to increase. The labor participating in the work is hanged to a fixed rope which sometimes lead to crash accidents. Numerous researches all over the world have been conducted in order to develop an automated technology to suggest solutions for this problem. However, it has been analyzed that the previous studies are not appropriate to be implemented in the domestic apartment houses. Thus, general and technical consideration demanded have been deducted by analyzing the properties of apartment houses. Moreover, a survey has been conducted in order to analyze the technical feasibility and actual site application. It is expected that the development of automated exterior wall painting robot overcomes suggests solutions to current problems such as labor aging and accidents which has a direct impact on productivity, quality and safety.