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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
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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
Reduction of Differential Column Shortening by Placing Additional Reinforcement
Kim, Han-Soo ; Shin, Seung-Hak ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 3~10
In this study, a method to control the differential column shortening by placing additional reinforcement was proposed and the optimum distribution of reinforcement for reducing the differential column shortening was investigated. To reduce the differential column shortening, the axial stiffness of the columns below the story in which maximum differential column shortening occurred should be increased. The axial stiffness can be increased by placing additional reinforcement. The amount of reduction in differential column shortening of 2-bays frame structure according to four reinforcement distribution schemes were examined to find out the most effective reinforcement distribution scheme. We investigated the efficiency between the proposed distribution schemes when they were applied to the 2-bays frame structure with outrigger by comparing the reduction in maximum differential column shortening. As a result, the distribution scheme determined by considering the stiffness of the outriggers was the most efficient in terms of amount of reduction in differential column shortening and the required quantity of reinforcement.
Development of Operation & Maintenance Cost Estimating Model for Facility Management of Buildings
Kim, Se-Ryang ; Jin, Run-Zhi ; Hyun, Chang-Taek ; Cho, Chae-Gyung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 11~21
As office buildings are becoming larger, state of the art, higher by development of domestic industry section, professional organizations are necessary for outsourcing operation & maintenance(O&M) of office buildings. However, the O&M cost estimating standards for facility management have not standardized against the outsourcing management trend. In addition, it is difficult to estimate operation & maintenance cost systematically. When owners and managers decide O&M plan or rent, they may have problems on estimating budget for facility management. Therefore, this study developed an O&M cost estimating model using various construction characters through Case-based Reasoning(CBR) and Multiple Regression Analysis(MRA). It is expected that by using the O&M cost estimating model, facility owners or mangers could have advantages to perform tasks of O&M cost plan for the facility management, and could make a decision weather to reduce or increase the O&M cost by derived specific cost on the O&M. Also, when the owners want to change self-operated facility management to outsourcing facility management, they can first compare O&M cost which is needed in self-operated facility management with that of outsourcing facility management, and then make a decision to select a appropriate facility management method.
Comparison of Building Code for Design of Non-structural Elements for Buildings
Chang, Kug-Kwan ; Lim, Young-Chul ; Seo, Dae-Won ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 23~30
Non-structural elements of a building are not a part of the main load resisting system. Therefore, there are often neglected from the structural design point of view. Seismic design of buildings has been well developed and is being continually updated and improved. But nonstructural elements in buildings are rarely designed with the same care or under the same degree of scrutiny as buildings. As a result, buildings that remain structurally sound after a strong earthquake often are rendered unserviceable due to damage to their nonstructural elements, such as access floors, telecommunication equipment and others. This damage has caused interruption of operations and large economic losses in the past. This paper reviews the design philosophy and design provisions of several international seismic codes, and compare design lateral forces recommended in these codes.
Flexural Capacity Evaluation of Prestressed Steel-Concrete Composite Beams with Discontinuous Webse
Oh, Jae-Yuel ; Lee, Deuck-Hang ; Kim, Kang-Su ; Kang, Huyn ; Kim, Heung-Youl ; Kim, Hyung-Jun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 31~39
A corrugated steel plate has very little axial stiffness in longitudinal direction due to the accordion effect resulted from its geometric characteristics. Based on this phenomenon, the corrugated webbed steel beams can be utilized for prestressed members to get greater prestressing efficiency on the top and bottom flanges of steel beams that are the main resistant elements against the bending moment. Also, the resistance to any unbalanced construction loading can be improved and the composite action between concrete and steel web can be significantly enhanced by the corrugated web. Due to this reason, researches on the corrugated webbed steel beams have been continued so far. Manufacturing the corrugated webs, however, may have considerable disadvantageous in workability and economical point of view. In this study, therefore, the prestressed composite beam with discontinuous webs has been developed to improve such shortcomings of the corrugated webbed steel beam system. In order to verify the structural performance of the developed prestressed steel-concrete composite beam, its prestressing efficiency has been compared to the steel beams with corrugated webs by finite element analysis, and two full-scaled specimens were also fabricated and tested to evaluate their structural behavior.
Vertical Vibration Control of 39-Story Steel Structure with Tuned Mass Damper
Woo, Sung-Sik ; Lee, Sang-Hyun ; Hwang, Ji-Hyun ; Chung, Lan ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 41~48
An abnormal vibration accident occurred in a 39 story steel frame structure on July 5th, 2011. In this study, The eigenvalue and time history analyses were conducted using a 3 dimensional numerical model to investigate the vertical vibration cause. The vertical accelerations of the several floors measured during the tests of human rhythmic movements in a fitness center on the 12th floor were compared with the analysis results. Based on test data and numerical results, it was identified that the natural frequency of vertical vibration mode of the building is equal to the main frequency of human group rhythmic movements and the resonance of the vertical mode caused the abnormal vertical vibration of the building.
Dynamic Characteristics of Traditional and New Korean-style Houses According to Excitation Amplitude
Lee, Seul-Gi ; Kim, Yeong-Min ; Roh, Ji-Eun ; Lee, Sang-Hyun ; Woo, Sung-Sik ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 49~58
In this study, dynamic characteristics of both traditional and new Korean-style houses according to excitation amplitude were evaluated through shaking table tests of 1/15 scale models. Along with the experiments, nonlinear structural analysis which considers frictional characteristics of joints was also performed and both the experiments and analysis results were compared. As the excitation amplitude increased, natural frequency of the experimental models and maximum magnitude of transfer functions decreased. This indicates that stiffness of the structures is much related with the excitation amplitude. As the excitation amplitude increases, damping ratio of the traditional Korean-style house has increased much more than that of the new Korean-style house. This explains that energy dissipation capacity of the traditional wooden joints is bigger than that of the modern steel joints. The analysis results which considers nonlinear frictional behavior of joints showed that bi-linear model can be used for modeling the joints of new Korean-style house, but another frictional force should be considered for simulating the experiments of the traditional Korean-style houses.
Study on the Physical Properties of
as a Blowing Agent Utilized Insulation
Yoon, Sang-Hyuck ; Lee, Jong-Chan ; Lee, Sea-Hyun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 59~66
Hydrochlorofluorocarbon (HCFC) is an ozone-depleting substance that is subject to environmental regulations based on the Montreal Protocol, and in South Korea, which is regarded as a developing country, its use will be restricted in phase starting in 2013 until finally being prohibited in 2030. HCFC is regulated Based on the Tokyo Protocol, HCFC is a regulated construction material for carbon dioxide reduction with GWP of 1,700~2,400 times that of
, with a GWP of 1. At present in South Korea, the foaming agent used for extruded polystyrene insulation consists of solely HCFC, whereas it has been replaced with eco-friendly foaming agents (carbon dioxide, hydrocarbons) by advanced countries such as European countries and Japan as a measure for environmental change. A review of the physical properties of insulation material utilizing
showed that the compressive strength, flexural failure load, thermal conductivity, combustibility and moisture permeance satisfied the standards of KS M 3808 foaming polystyrene by 4~60%, and it was determined that the foaming agent could be replaced with
by 30%. Also, it is thought that adding graphite will improve the thermal conductivity of the insulation material.
A Research on Tensile Strength of Jointing Form and Distance of Butt Joint in Waterproofing System Builded-up the Sheet-Liquid Composites Membrane in the Roof Exposure Waterproofing
Heo, Neung-Hoe ; Go, Gun-Woong ; Kim, Yun-Ho ; Park, Jin-Sang ; Oh, Sang-Keun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 67~74
The joint systems have been mainly used overlap joints and mechanical fixation methods of sheet-membrane composite waterproofing methods on roof exposure waterproofing of structure. However, these methods have been frequently occurred damages at joints by contraction and thermal behavior of sheet. The area applied in this study is an exposed area of the rooftop, and stainless steel sheet was used in a preceding study to secure maximum specimen performance from tensile force, deformation and elastic force, where waterproofing sheets of a synthetic polymer system as an actual material for the complex waterproofing construction method were tested using identical conditions. Test pieces were divided into a total of 2 kinds consisting of a general form and a pierced form, and coating materials divided into a total of 2 kinds such as cross section coating and both side coating with application of 4 types in total including general form, general form, pierced form, pierced form. In this research, we find proper joint distance in butt joint of sheet-membrane composite waterproofing methods and select the stable joint type by tensile strength test at joints.
A Study on Properties of Crack-Reducing Concrete Containing Urea
Choi, Won-Il ; Kim, Hak-Young ; Choi, Byung-Sun ; Lee, Young-Do ; Jung, Sang-Jin ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 75~82
When urea is mixed with concrete, the temperature of the concrete is reduced by endothermic reaction between water and urea. By using this property, it is possible to reduce the temperature of concrete at both casting stage and during the hydration process. This can be very advantageous in mass concrete constructions and when concrete is being cast under high ambient temperature like in the summer or in hot. In this study the influence of urea in concrete on flowability, heat of hydration, setting time, strength and drying shrinkage strain are discussed. The result of the experiment show that apart from the fact that urea can reduce the hydration temperature in concrete, it can also enhance both flowability and durability of concrete.
A Research on Enactment Plan of Standard of Bonding Strength in Bonding Part of External Insulation Method
Park, Wan-Goo ; Park, Jin-Sang ; Song, Je-Yeoung ; Oh, Sang-Geun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 83~90
Energy issues is accelerated. As a result, insulation method is being applied actively in the buildings. External insulation method is efficient batter than other insulation method and it is applied on the external wall of the building actively. Apply method of external Insulation is divided Wet Construction, Dry Construction, Semi-Dry Construction. Wet Construction is adhesion method on the buildings using mortar of adhesion. Dry Construction is adhesion method on the buildings using anchor except water. Finally, Semi-dry Construction is adhesion method on the buildings using anchor + mortar. But When the strong wind blows, method of external Insulation is occurring problem of drop out in the rainy season. Therefore, this research progress enactment plan of standard of bonding strength in bonding part of external insulation method of wet construction, dry construction, semi-dry construction The results of this research, Adhesion of Semi-Dry Construction is best than other methods. Should try to use based on the adhesion strength standard on the basis of the results as described above.
Development of Energy Saving Strategy Model for Reducing Energy Consumption in Educational Facilities - Focusing on Facilities in Universities -
Song, Kwon-Sik ; Park, Moon-Seo ; Lee, Hyun-Soo ; Shin, Jin-Ho ; Kim, Soo-Young ; Jung, Hye-Jin ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 91~100
Recently, the energy consumption of domestic educational facilities has been steadily increased and they were classified as a top energy consumption business in building industry in 2009. In order to prevent the energy overconsumption in educational facilities, the government requests educational facilities to make a plan for energy saving while new building, operation, and extension. However, they have been considering only the amount of energy saving as criteria in the phase of making energy saving plans, not the input costs. Especially, the costs for energy saving are limited in educational facilities, so that they need a cost-effective method when selecting energy saving measures. This paper proposes a model for selecting energy saving measures which derive maximum energy saving within allowable cost using genetic algorithms. As a result of this research, the developed model will be utilized for making a cost-effective plan in educational facilities.
Effects of Work Tools and Musculoskeletal Disorders on Labor Productivity - The Mediating Effects of Musculoskeletal Disorders -
Kwark, Dong-Jin ; Park, Jung-Lo ; Kim, Ju-Hyung ; Kim, Jae-Jun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 101~108
Given the characteristics of construction work, which is highly dependent on labor compared to other industries, management of labor productivity is closely related with the construction industry. Therefore, it has become more important than ever to boost productivity in construction projects. The present study used a survey of form workers to conduct correlation analysis between factors of working tools, musculoskeletal disorders, and labor productivity. In addition, using structural equation modeling and the Sobel model, the study verified the mediating effects of musculoskeletal disorders. The findings of the analysis showed that friction sawing cutters are related with waist/back musculoskeletal disorders. In the relation between working tools and labor productivity, the hammer showed a strong positive relationship with Productivity1, standing out as the tool with the highest correlation. In the relation between musculoskeletal disorders and labor, hands/wrists showed a significant correlation with Productivity 1. The test result on the mediating effects of musculoskeletal disorders derived a statistically significant value, at Z=1.215 (p<0.05), suggesting that musculoskeletal disorders have mediating effects in the relation between working tools and labor productivity. Through this study, we identified relationships among factors related to labor productivity in construction sites; the findings of this study could be used as basic data regarding factors adversely affecting labor productivity, as well as to determine how to improve labor productivity strategically.
Client/Server based CYCLONE System for Revising Construction Standard Production Unit System (C/S CYCLONE)
Son, Chang-Baek ; Lim, Tae-Kyung ; Lee, Dong-Eun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 1, 2013, Pages 109~116
This study introduces a Client/Server based CYCLONE (C/S CYCLONE) that enables to support the revision of construction standard production unit (CSPU) effectively. Construction processes are highly repetitive. A resource entity continuously cycles through work tasks that processes or uses resources. Web-CYCLONE (Halpin 1992) has been accepted as a useful tool for modeling a construction operation and analyzing the productivity of it. However, the system has a lack of practicality as follows: (1) it does not efficiently record and keep track of operation models in a database; (2) it does not allow users to retrieve a model for reuse and update the model with local conditions; finally (3) extending it into a practical domain is rare. In order to overcome the aforementioned limitations of the simulation system in the view of practitioners, this paper presents three strategies to converting the existing CYCLONE system to be suitable for an CSPU's revision process and provides system user interfaces corresponding to the strategies. The usability of the developed C/S CYCLONE was verified by using a case study on jobsite steel erection operation.