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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Architectural Institute of Korea Structure & Construction
Journal Basic Information
Journal DOI :
Architectural Institute of Korea
Editor in Chief :
Volume & Issues
Volume 30, Issue 12 - Dec 2014
Volume 30, Issue 11 - Nov 2014
Volume 30, Issue 10 - Oct 2014
Volume 30, Issue 9 - Sep 2014
Volume 30, Issue 8 - Aug 2014
Volume 30, Issue 7 - Jul 2014
Volume 30, Issue 6 - Jun 2014
Volume 30, Issue 5 - May 2014
Volume 30, Issue 4 - Apr 2014
Volume 30, Issue 3 - Mar 2014
Volume 30, Issue 2 - Feb 2014
Volume 30, Issue 1 - Jan 2014
Selecting the target year
Effects of Composite Floor Slab on Progressive Collapse Resistance of Steel Moment Frames
Kim, Seon-Woong ; Lee, Cheol-Ho ; Lee, Kyung-Koo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 3~10
DOI : 10.5659/JAIK_SC.2014.30.2.003
In this paper, a kinematic modeling of the composite floor slabs under the column missing scenario is proposed that can be used for more accurate evaluation of progressive collapse resistance of steel moment frames. To this end, the behavior of double-span composite floor slabs is first investigated using the advanced nonlinear finite element analysis. The functional form of the deformed shape of the double-span floor slab is derived from the numerical analysis and used for analytically modeling the energy absorption contribution of composite floor slabs under the column missing scenario. It is shown that the analytical model proposed in this study can be used in conducting more accurate energy-based progressive collapse analysis of steel moment frames.
Effect of Correlation Structure of Ground Motions on the Response of Structures
Ha, Seong-Jin ; Han, Sang-Whan ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 11~18
DOI : 10.5659/JAIK_SC.2014.30.2.011
For seismic design for high-rise buildings and special structures, linear or nonlinear response history analysis (RHA) have been used for estimating accurate seismic demands of structures. In order to obtain satisfactory analysis results, proper selection of input ground motions are very important. Current seismic design provisions require a set of multiple ground motions rather than a single ground motion. Several studies reported that Trial-and-error procedure did not provide accurate and consistent selection results. Several procedures were proposed to select ground motions which have the mean and variance of their response spectra matching target response spectrum mean and variance. This study considers correlation structure with mean and variance of target response spectrum for selecting ground motions. The effect of correlation structure on seismic demand on structures is evaluated. NGA data base is used to construct ground motion library and 20-story steel moment frame is considered as model frame. This study showed that the effect of correlation structure on the seismic demands of the structure can not be neglected when selecting ground motions.
Study on the Color Changes of Blast-Furnace Slag Concrete subjected to High Temperatures using Photo Image Analysis
Lee, Joong-Won ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 19~26
DOI : 10.5659/JAIK_SC.2014.30.2.019
When reinforced concrete is subjected to high temperatures in a fire, there is a deterioration in its properties. It is very important to know loss in compressive strength, loss of elastic modulus, cracking and spalling of the concrete. To determine whether a structure can be repaired rather than demolished after a fire, an assessment of structural integrity must be made. To assess the remaining bearing capacity of the structural elements after fire, information of the temperatures reached inside the elements is necessary. On heating, a change in color from normal to a pink/red is often observed and this is useful since it coincides with the onset of significant loss of concrete strength. The purpose of this study is to quantify changes in color for blast-furnace slag concrete using photo image analysis and to identify the relationship between color change and increasing temperatures. For this purpose, we manufactured concrete samples with varying water-to-binder ratios and heated them to target temperatures of 100, 200, 300, 400, 500, 600, and
in an electric oven, whereupon their color changes in photos of the specimen were measured using photoshop program. The result of this study shows that color changes in a concrete exposed to high temperature have a consistent relationship with several variables according to RGB, HSB, and Lab color coordinates. Therefore, it is possible to estimate how much temperature the specimen was exposed considering these results of color change.
Modal Properties and Force Identification Algorithm of a Building Structure Using Acceleration Responses and ICA Technique
Hwang, Jae-Seung ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 27~35
DOI : 10.5659/JAIK_SC.2014.30.2.027
In this paper, a new system-force identification technique in frequency domain is proposed that is simultaneously to estimate the natural frequency, damping ratio and external modal load by back-calculation from the Kalman filter and the acceleration responses of building structure. The technique is a kind of output-only system identification method to predict the dynamic properties of governing modes separated by applying independent component analysis to the measured acceleration responses and then by minimizing the performance index cooperated with a power spectral density and its derivative of estimated modal load by Kalman filter and the corresponding modal responses. For the verification of the proposed method, a numerical simulation for SDOF system and an application for in-situ measurement data were performed. The results from the simulations show that the proposed technique can estimate the modal properties and modal load more precisely than a conventional output-only subspace identification technique. Because the damping ratio obtained by the proposed technique has a some variations depending on the number of sections for averaging and a duration time in the process of in-situ measurement, so it needs a profound research and additional verification process for more stable estimation of damping ratio.
A Study on the Development of Section Tables for Lateral Members of Hanok
Kim, Yeong-Min ; Kim, Jang-Hee ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 37~44
DOI : 10.5659/JAIK_SC.2014.30.2.037
In this study the section tables were developed which help to decide appropriate section size of lateral members of 3-ridge and 5-ridge roof hanok, such as, ridgepole, Jusim-Dori, Dori and Jangyeo, Pyung-Bang and Chang-Bang, and rafters. The main items which were considered in developing section tables are roof structure types, timber species and material properties, overburden loads, length and disposition of members. We proposed schemes for computing allocation loading area for each lateral members according to geometric shapes and topological disposition between members. The length of members and size of sections are restricted to a field applicable ranges. The filed applicability of the developed section tables were evaluated using a test-bed hanok in Myongji University and a pilot hanok in Eunpyeong hanok village. The evaluation was carried out by comparing three results of sections from detailed structural design, section tables and actual construction. It turns out that the sections from section tables are somewhat conservative but has sufficient field applicability in early design stage.
QFD Assessment based on Required Performance Criteria and Change Process by Construction Stakeholder's Needs
Kim, Sang-Woo ; Shin, Chang-Hyun ; Cho, Jae-Ho ; Suh, Sang-Wook ; Chun, Jae-Youl ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 45~52
DOI : 10.5659/JAIK_SC.2014.30.2.045
It is a essential element of decision-making problem on design quality management and change process. Domestic design quality management has a major problem such as Methods/Materials/Systems selection error, insufficient design features caused by inadequate design review, and qualitative decision making process. It is due to lacks of comprehensive review of method in design solutions, insufficient of understanding of stakeholder requirements, and rely on technicians' empirical experience. Therefore, this study is fucus on change management that is to determine type of decision-making model with the ranking importance of the needs of project stakeholder. In addition, a decision-making method is proposed to evaluate function, performance based on required performance criteria. The QFD-RPC(Quality Function Deployment based on the Required Performance Criteria) can be shared information of function features between participants and check its importance. And also, it is to evaluate the importance ranking of the function, and then to analysis corresponding its performance and required performance criteria, finally to review the suitability whether the defined quality satisfy product' performance compared to the required criteria. Design project can be reduced unnecessary change through the QFD-RPC assessment with a quantitative measurement for design quality.
A Study on the Construction Management by Design and Construction Phase for Economic Improvement of the Curtain Wall Construction
Moon, Sang-Deok ; Ock, Jong-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 53~62
DOI : 10.5659/JAIK_SC.2014.30.2.053
The curtain wall construction applied on high-rise building facades in Korea became generalized, but specialty of the CMr(Construction Manager) who needs to perform economical project management with specialty in the curtain wall construction is still lacking. Therefore, this study performed about the business management plan of the design and construction phase for profitability provision of the curtain wall construction. This study analyzed the structure design standard of the curtain wall, researched economical design alternatives, and analyzed the Mock-up test of 16 curtain wall projects that were recently conducted. Based on the research results, this study suggested items to be confirmed at the time of inspecting the structural design by curtain wall system, improvement method of the section properties for economical efficiency of sections, and ways to improve the distance between anchor point and sleeve or stack joint. Also, this study classified causative factors of the difference in the curtain wall mock-up test deflection value and the design deflection value into, 1)problem in the member connections, 2)problem in manufacturing the structure, 3)problem in the structure analysis and 4)problem of assumptions at the time of designing the structure, and suggested a project management strategy for CMr to secure economic feasibility and quality of the curtain wall.
A Study on Win-Win Barriers between Public Clients and General Contractors - Focused on General Contractors' Perspectives -
Jo, You-Gyeong ; Kim, Han-Soo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 30, issue 2, 2014, Pages 63~71
DOI : 10.5659/JAIK_SC.2014.30.2.063
As economic democracy has become a core issue in government policies, promoting win-win relationships between economy parties emerges as a major matter of concern in various industries. In the construction industry, win-win issues are traditionally concerned with relationship between general and specialty contractors with less attention to client-general contractor relationship, which is a starting point of win-win relationship between general and specialty contractors. The objective of the study is to identify win-win barriers between public clients and general contractors and to discuss their key characteristics and implications. The study identifies major win-win barriers and highlights that unfair treatment of general contractors' contractual rights in relation to change orders and extension of time has greater negative impacts on public client and general contractors' win-win relationship.