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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 31, Issue 12 - Dec 2015
Volume 31, Issue 11 - Nov 2015
Volume 31, Issue 10 - Oct 2015
Volume 31, Issue 9 - Sep 2015
Volume 31, Issue 8 - Aug 2015
Volume 31, Issue 7 - Jul 2015
Volume 31, Issue 6 - Jun 2015
Volume 31, Issue 5 - May 2015
Volume 31, Issue 4 - Apr 2015
Selecting the target year
Structural Performance Evaluation of Steel Wire-Integrated Deck Plate according to the Construction Load
Kang, Min-Joung ; Kim, Sang-Seup ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 3~12
DOI : 10.5659/JAIK_SC.2015.31.5.3
Recently, due to the decreased construction period and the convenience of construction work, deck plate system has been widely used in the construction sites. Most of all, owing to its good stiffness and economic consideration, the steel wire-integrated deck plate has become very popular in recent years. This research suggested the new-type shear connector that can perform the roles of vertical bar and shear connector at the same time to obtain safety on construction load of the steel wire-integrated deck plate and improvement on constructability, and used many variables such as the location of lattice end and diameter of the lattice bar to evaluate the structural safety of the steel wire-integrated deck plate in construction step. The experiment results show that the new-type shear connectors sufficiently perform the roles of the vertical bars.
Review of Lateral Resisting and Moment Carrying Capacity Studies for Wood to Wood Connections
Jeong, Gi Young ; Kong, Jin Hyuk ; Song, Jin Kyu ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 13~24
DOI : 10.5659/JAIK_SC.2015.31.5.13
The goal of this study is to review on the previous studies of mechanical behaviors of traditional wood to wood connections. The load carrying capacity of various types of wood to wood connections was investigated. The highest load carrying capacity of 26.67kN was found from goose neck connection, whereas the lowest load carrying capacity of 0.82kN was found from end lap connection. Comparing the moment carrying capacity of dovetail and sagae joints, the sagae joint showed a higher moment value. However, the direct comparison from the different wood to wood connections was limited due to the different size, species, geometry of tenon and mortise, and different testing methodologies. To apply the wood to wood connection to the modern buildings, optimized geometries of tenon and mortise for the wood to wood connection should be established to obtain the highest structural performance. Also, standardized testing methodologies should be used to accumulate the structural design data.
An Experimental Study on the Size Effect of Reinforced Concrete Beams without Stirrups Using Recycled Coarse Aggregates
Lee, Ho-Kyung ; Gong, Hyo-Mung ; Baek, Seung-Min ; Kim, Woo-Suk ; Kwak, Yoon-Keun ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 25~32
DOI : 10.5659/JAIK_SC.2015.31.5.25
The authors examined the size effect of reinforced concrete(RC) beams using natural coarse aggregates and recycled coarse aggregates. The specimens were made of concrete with a maximum coarse aggregate size of 20 mm. In this study, depth-to-width ratio, shear span-to-depth ratio, tension steel ratio and RCA replacement ratio were fixed 1.5(i.e., h/b=1.5), 3(i.e., a/d=3), 1.2%(i.e.,
) and 30%(i.e.,
) respectively. The test variables only include the RC beam size and aggregate type. A total of 10 simple RC beams were tested under four points loading. It has been shown that shear strength decreases as member size increases. This is associated with a phenomenon called size effect. However, the size of the RC beams does not seem to affect the shear strength proportionally. Besides, test results were analyzed and then compared with the findings and various shear design equations. To conclude, the shear equations reflect relatively well with most of experimental data.
Minimum Embedded Length of Hybrid Steel Coupling Beam
Lim, Woo-Young ; Hong, Sung-Gul ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 33~44
DOI : 10.5659/JAIK_SC.2015.31.5.33
The purpose of this study was to estimate the minimum embedded length of the hybrid steel coupling beam. Cyclic loading tests for six hybrid steel coupling beams were performed. Primary variables of the tests were the embedded length of the steel beam. Test results indicated that the embedded length of the steel beam and top - seat angles had influence on the shear strength and energy dissipation capacity of the hybrid steel coupling beam. Required embedded length of hybrid steel coupling beam was proposed. Minimum embedded length was expressed as function of concrete compressive strength and plastic shear strength of the steel coupling beam.
Evaluation of Damage Class and Residual Seismic Capacity of RC Frame with Unreinforced Masonry Infill Wall Suffered by Earthquake
Choi, Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 45~52
DOI : 10.5659/JAIK_SC.2015.31.5.45
After an earthquake, the major concerns to damaged buildings are their safety/risk to aftershocks, quantitative damage assessment to evaluate their residual seismic capacity and to identify necessary actions on the damaged buildings. Few investigations on unreinforced masonry infill walls, however, have been made to quantitatively identify their damage level and criteria to judge necessary actions for their continued use, repair and rehabilitation although their damage has been often found in the past damaging earthquake. In this study, reinforced concrete (RC) frames with unreinforced concrete block (CB) walls for school buildings in Korea were tested under cyclic loadings to propose the evaluation method of their residual seismic capacity. In this paper, the relationships between the damage class represented by residual crack widths and the seismic capacity reduction factor
corresponding to residual seismic capacity for columns and CB walls were estimated analytically and experimentally, and the factor
corresponding to each damage class of RC frame with CB wall was proposed. Futhermore, the damage descriptions and crack widths corresponding to damage classes for CB walls was defined.
A Study on Compressive Strength and Microstructure Properity of Reactive Powder Concrete Containing Copper Slag as Aggregate
Kim, Young Su ; Lee, Yong Mu ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 53~60
DOI : 10.5659/JAIK_SC.2015.31.5.53
Thesedays, ultra high strength concrete that exceeds compressive strength of 100MPa is used widely in modern structure. Reactive powder concrete is an ultra high strength cement-based material. In this study, copper slag has been replaced with quartz sand at 10, 20, 30, 40and 50 %. Three different curing methods(water, steam and autoclave curing) were applied to the specimens. After mixing, tests of mini slump flow, unit volume weight and amount of air were conducted on fresh reactive powder concrete. Compressive strength was determined after 28days on the hardened reactive powder concrete specimens. Test results of compressive strength of reactive powder concrete containing copper slag was over 200MPa after autoclave curing.
Influence of Mixing Factors on the Early-Age Properties of Magnesium Potassium Phosphate Cement Mortar
Kang, Suk-Pyo ; Kim, Jae-Hwan ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 61~68
DOI : 10.5659/JAIK_SC.2015.31.5.61
In early applications of Magnesia-phosphate cements (MPCs) in civil repair engineering, ammonium dihydrogen phosphate(ADP) was usually used as the phosphate component. the ADP-based MPC can be termed as magnesium ammonium phosphate cement (MAPC), However, as the byproduct of the reaction forming struvite, ammonium gas would generate an unpleasant odor, leading to attempts to replace ADP by potassium dihydrogen phosphate(KDP), The KDP based MPC can be termed as magnesium potassium phosphate cement(MKPC). The properties of magnesium potassium phosphate cement (MKPC) mortars with different potassium phosphate to magnesia (KDP/MgO) weight ratios and water to binder (W/B) weight ratios have been investigated. The experimental results show that both KDP/MgO and W/B ratios have large influence on the setting time and mechanical properties of MKPC mortars. Therefore, the formulation has to be optimized in terms of the workability, performance, as well as cost consideration.
Water Reducing Rate and Compressive Strength of Alkali-Activated Mortar with Plasticizer
Chang, Ji-Han ; Han, Cheon-Goo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 69~75
DOI : 10.5659/JAIK_SC.2015.31.5.69
It is well known that the water reducing rate of concrete are affected by the kind of organic admixtures. Organic admixture can improve the properties of concrete. Sulfonated Naphthalene - Formaldehyde(Pn) superplasticizer and Poly - carboxylate(Pc) are used representatively, but most study deal with alkali - activator and amorphous binder. In this study, we investigated the influence of mixture ratio of superplasticizer's type on the water reducing rate and compressive strength. In view of the results, we found that the admixture ratio of superplasticizer's type results to be significant factors. It is represent that water reducing rate of Pn and Li is about 16 % in the dosage of 2 %, but air content was severly increased in the case of Li. Also the compressive strength was increased with superplasticizer's ratio is until 0.5 %.
An Unit Module Plan of Cross Stacking Method for Design Diversity
Jun, Young-Hun ; Lee, Gi-Cheol ; Lee, Young ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 77~85
DOI : 10.5659/JAIK_SC.2015.31.5.77
This research is to suggest a unit-module plan of cross stacking method for design diversity of modular housing. In this study, we analyzed cases of the domestic and overseas modular construction which applied with the cross stacking method. Through case studies, we confirmed that the method was suitable for diverse design plan of modular housing. In addition, we performed 3D modeling, using framed modules of dormitory for foreigners and public dormitory for university students. Through this process, we have identified constructional and structural problems. Futhermore, we derived solutions for the problems and also for detailed unit-module plan of the cross stacking method. Thus, we made a model of unit-module plan to verify its utility and then we confirmed that it is very useful to the cross stacking method for design diversity of modular housing.
Strengths, Weaknesses, Opportunities, and Threats Analysis of Korea Construction Companies in the Vietnam Market
Kim, Hwa-Rang ; Jang, Hyoun-Seung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 87~96
DOI : 10.5659/JAIK_SC.2015.31.5.87
SWOT model was used to develop strategies for the Korean construction firms in entering the construction market in Vietnam. Literature review, interview survey, official statistics survey and other research methods were utilized in order to extract internal and external environmental factors of both the firm and local area. By extracting strength, weakness, opportunity and threat factors, a total of 11 strategies were produced: three from SO(Strengths-Opportunities), ST(Strengths-Threats) and WT(Weaknesses-Threats) respectively, and two from WO(Weaknesses-Opportunities). The result of the study can be utilized as a basic data in developing a strategy for the Korean construction firms to penetrate into the construction market in Vietnam.
A Study on Strategies of Small and Midsize Construction Companies for Joint Overseas Expansion
Yun, Seong-Hee ; Yu, Jung-Ho ; Cho, Hun-Hee ; Jang, Hyoun-Seung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 31, issue 5, 2015, Pages 97~104
DOI : 10.5659/JAIK_SC.2015.31.5.97
Overseas construction market continues to grow while that of Korea suffers sluggish growth. Under the circumstances, Korean construction companies are expanding its presence in the overseas market to overcome the crisis. However, only a handful of construction conglomerates have entered into the overseas market so far. Different working and business environment, language, culture and system also pose great risks for small and medium construction firms that are relatively incompetent to enter the market abroad. Therefore, the paper suggested ways to enhance their competence and address problems they face. To this end, with focus on the small and medium construction firms that were deemed to have less overseas work experience and less competency among the local ones, it identified their issues arising from overseas projects and incompetent areas and the cause and effect of such incompetency through DEMATEL technique.