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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
An Experimental Study on the Shear Behavior of Indirectly Loaded Reinforced Concrete Deep Beams
Lee, Jin-Seop ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 3~10
Reinforced concrete deep beams have many useful applications in building structures such as transfer girders, wall footings, and foundation pile caps. Particularly, the use of the deep beams at the lower levels in tall buildings for both residential and commercial purposes has been increased rapidly because of their conveniences and economical efficiencies. Generally, this system consists of two types of deep beams. One is a beam that is directly resisting vertical load from columns and walls. The other type resists the shear force transferred from the transverse deep beams which are subjected to vertical loads directly. The shear strength of this type of beams cannot be predicted by conventional shear strength equations because of the different loading conditions and internal stress transfer mechanisms. The purpose of this study is to experimentally investigate the shear transfer mechanisms of "Indirectly Loaded Deep Beam". The test results showed that the "Indirectly Loaded Deep Beams" had the almost identical shear strengths with the directly top-loaded deep beam. However, as the shear span to effective depth ratio of transverse beam was increased as 0.5, 1.0, and 1.5, the deflection at maximum load was increased 1.23, 1.67, and 2.17 times respectively. If the system consists of two perpendicular deep beams with same depth, the shear behavior of indirectly loaded deep beams can be explained using the three dimensional strut and tie model with a stress transfer node in a joint region.
Shear Capacity of SAFE Friction Damper Using Break Pad of Automobile
Hwang, In-Tae ; Lee, Chang-Hwan ; Ju, Young-Kyu ; Kim, Sang-Dae ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 11~18
Dissipating structural energy during an earthquake by damping devices is convenient and time-saving method to improve seismic performance of existing buildings. Friction damper is one of these damping devices and dissipates seismic energy through friction force created at the contact surface of solid bodies. As a damping device, friction damper has a great benefit because it behaves relatively stable and efficiently in the shape of a rectangular. Various types of friction damper has been developed and could be classified by its frictional material and working mechanism. Friction damper dealt in this paper uses brake pad developed for automobiles as a frictional material and acts in shear-type behavior. The Performance of brake pad for automobiles is modified with respect to durability and stability. Purpose of this study is to evaluate the performance of the friction damper when variables like initial temperature and sliding velocity are changed through experiment.
Field Measurements for Identification of the Vibration Accident Cause of a 39-Story Steel Building Structure
Lee, Sany-Hyun ; Woo, Sung-Sik ; Chung, Lan ; Lee, Dong-Guen ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 19~27
In this paper, the field vibration measurement tests and analysis have been conducted for investigating the exact causes of the abnormal vibration accident which occurred on last July 5 2011 in TechnoMart. The vertical accelerations of the building floors were measured under the 4D movie-theatre operation and human rhythmic movements in a fitness centre which were estimated as ones of the vibration sources. From field tests, it could be identified that the building has global vertical vibration mode of 2.7Hz natural frequency and human group rhythmic movements having frequency component mainly close to 2.7Hz in a fitness centre caused the resonance of the vertical mode. The peak acceleration caused by the taebo was
which is slightly higher than the ISO 2631-2;1989 serviceability standards of an office building.
Structural Performance Evaluation of Welded Built-up H Beam Using the HR Plates
Ha, Tae-Hyu ; Shim, Hyun-Ju ; Lee, Eun-Taik ; Kim, Joo-Woo ; Lee, Chul-Ho ; Yang, Jae-Keun ; Kim, Sang-Seup ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 29~37
HR plates (Hot-Rolled Plate) are produced by straightening hot-rolled steel coil with a primary objective to substitute for thick plates, thereby avoiding a number of difficulties encountered in the production and shipment of thick plates as well as relieving supply problems. In order to evaluate the applicability of HR plates to architectural structures under the KBC 2009 steel design provisions, a total of four full-scale welded built-up H-beams with simple supports were tested together with associated key material testing. The full-scale beam specimens were designed into two categories, or flexural-dominated versus shear-dominated such that both bending and shear strength could be effectively evaluated. The materials test showed that HR plates satisfy both the tensile mechanical properties and the CVN toughness required according to the current material specification. Both the flexural- and shear-dominated specimens exhibited sufficient strengths exceeding the nominal strengths specified in the KBC 2009, thus confirming the applicability of HR plates.
A Guideline for Structural Drawings Based on BIM
Oh, Hyang-Ok ; Jung, Jong-Hyun ; Lee, Jae-Cheol ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 39~46
As BIM is introduced in structural design, the environment of structural design is changing. This is because the reasonable guideline for the purpose, scope, and output of BIM based structural design are still not established. Also, there is much confusion in creation of structural drawings because of the same reason. In this study, therefore, we proposed the guideline for the creation of structural drawing considering the changes in environment of structural design caused by the introduction of BIM. For this, we performed the close investigations about the BIM guidelines and case studies for BIM application and derived the problems about structural drawings. Then we divided the structural design into four design stages and presented the guideline for the creation of structural drawings for each structural design stage such as drawing list, scope of contents in drawing, and presentation style. And we carried out a pilot project in which structural drawings are created based on the presented guideline for structural drawings. After the pilot project is complete, we concluded that the proposed guideline will reduce the confusion in creation of structural drawings.
Seismic Performance Evaluation of High-rise Steel Diagrid Frames with Torsional Irregularity
Kim, Seon-Woong ; Lee, Kyung-Koo ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 47~54
This paper analyzes economics and investigates the possibility of elastic seismic design of wind-designed high-rise steel diagrid frames with torsional irregularity in Korea. To this end, high-rise steel diagrid frames with twist angles of
(to represent regular building),
were first designed to resist wind loads. Then, seismic performance evaluation for the buildings was conducted using linear dynamic analysis. Analysis results show that total steel weights of the wind-designed high-rise steel diagrid frames with twist angle of
are about 1.14 and 1.22 times larger, respectively, than the weight of regular frame with twist angle of
. Demand-to-capacity ratio and seismic performance level present that high-rise steel diagrid frames can resist service level earthquake elastically whether high-rise building has torsional irregularity or not. For maximum considered earthquake, high-rise steel diagrid frames with torsional irregularity may be designed based on the limited ductility seismic design methodology.
Continuous Hoop Method for Shear Reinforcement and Lateral Confinement of Reinforced Concrete Beams
Choi, Tae-Woo ; Eom, Tae-Sung ; Park, Hong-Gun ; Kang, Su-Min ; Jin, Jong-Min ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 55~63
An experimental study was performed to evaluate shear resistance of beams laterally reinforced with continuous hoops. The continuous hoops were used in beams to reduce the weight of reinforcing steel bars and the duration of reinforcement work. In the present study, equations for shear design of the continuous hoop and the details of continuous hoops reducing the amount of transverse reinforcement were examined. Four simply supported beams were designed to exhibit shear failure before flexural yielding. 600 MPa and 500 MPa high-strength bars were used for longitudinal and transverse reinforcements according to KCI 2012 design code. The test results showed that the shear resistance of the beam specimens with continuous hoops were comparable to that of the beam specimen with conventional U stirrups and cross-ties. Cracking patterns and failure aspects of the beam specimens with continuous hoops were almost identical to those of the conventional beam specimen with U stirrups, regardless of the inclination of continuous hoops and the clearance between longitudinal bars and transverse continuous hoops. In addition, the nominal shear strengths predicted by using the yield stress of bars 500 MPa correlated well with the maximum strength by test.
The Evaluation of Column Bases Steel for Shear Reinforcement
Lee, Yong-Jae ; Yang, Won-Jik ; Yi, Waon-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 65~72
The shear behavior of foundation is evaluated the same as slab under the current building code (ACI318-08 and KCI-07). But the shear behavior of foundation would be different from the behavior of slab received uniformly distributed load, because it changes according to the deformational pattern of the foundation plate and the distributional pattern of the bearing power of soil. This paper examined the behavior of the foundation structure as well as the reinforcement effects associated with the reinforcement details. Toward such end, a series of tests were performed on three types of specimens (a non-reinforced RC specimen and two reinforced specimens, with welded/non-welded joint working as factors) installed on the ground. The conclusions obtained from the test data are summarized below. With regard to the use of welding for the joints of the reinforcement, the non-welded specimen exhibited a lower level of punching shear capacity compared to that of the welded specimen, although only minor differences were found between the specimens in terms of ultimate load and behavior.
Investigation of Optimal Quring Condition of PMM Using Epoxy Resin for Precast Products
Kim, Wan-Ki ; Jo, Young-Kug ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 73~80
For the purpose of developing the early strength of concrete, accelerated curings such as steam and autoclave curings are widely applied to the manufacture of precast concrete products. The uses of polymer-modified mortar and concrete are also expected for precast products. The study of hardener-free epoxy-modified mortars using bisphenol F epoxy resin with low viscosity has not been examined in detail. It has a merit in workability than that of the epoxy-modified mortars using bisphenol A epoxy resin with high viscosity. The purpose of this study is to clarify the mechanism of the strength development through dry curing of steam cured and combined steam/heat cured hardener-free epoxy-modified mortars. As a result, the flexural, compressive and tensile strengths of accelerated-cured hardener-free epoxy-modified mortars are improved with an increase in the polymer-cement ratio, and are considerably larger than that of unmodified mortar. The strengths of initial steam cured hardener-free epoxy-modified mortars are somewhat inferior to that of initial combined steam/heat cured hardener-free epoxy-modified mortars. However, the extent of the strength improvement with additional dry curing period is marked in steam cured mortars rather than combined steam/heat cured mortars. Accordingly, it is judged that initial steam cured hardener-free epoxy-modified mortar is suitable for precast concrete products, in consideration of long-term strength development and economic perspective. From a practical point of view, the optimal accelerated curing for the epoxy-modified mortars is recommended as follows: 1-d moist [
, 90%(RH)]+1-d steam(
Effect of Recycled Fine Aggregate Powder and OPC on the Strength Gain Properties of Mortar Using Blast Furnace Slag Powder and Natural Aggregates
Kim, Young-Hee ; Han, Cheon-Goo ; Lee, Hyang-Jae ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 81~88
This study is to investigate the effect of recycled fine aggregate on the properties of alkali activated slag-based concrete. In the review of the literature, NaOH and KOH are the common alkali activator for alkali activated concrete, but have a number of problem including safety issues. This study firstly used recycled fine aggregate that contains high alkalinity, in order to activate the hydration of blast furnace slag. In addition, ordinary Portland cement was used as a replacement of blast furnace slag, in order to increase the level of alkalinity. In the experimental test, the recycle fine aggregate replaced natural fine aggregate (RA) and the ordinary Portland cement (OPC) replaced blast furnace slag. The replacement ratios of both alkali activators were equally 0, 10, 20, 40, 60, 80 and 100%. Test results showed that the increase of RA and OPC increased slump flow and dramatically accelerated initial and final setting times. In particular, replacement with RA of over 60% accelerated final setting time faster than the concrete with OPC of 100%. By replacing NA with RA, later compressive strength of all concrete specimens increased. pH value sharply rises in early age, regardless of the replacement ratio for OPC and RA, and as far as curing temperature is concerned, OPC shows no big difference in proportion to the increasing pH, whereas RA shows the higher value of compression strength at
, provided pH remains the same. In conclusion, despite of low initial strength, RA of an eco-friendly material is more efficient than OPC as an alkali activator in terms of developing later strength of alkali activated concrete.
A Study on the Compressive Strength Property of Mortar with Fly Ash using Water Eluted from Recycled Coarse Aggregates
Lee, Yu-Jin ; Shin, Sang-Yeop ; Kim, Young-Su ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 89~96
The purpose of this study is to investigate the compressive strength properties of mortar with fly ash using water eluted from recycled coarse aggregate. When fly ash come into contact with water, they have not a autonomously chemical reaction. But fly ash is a pozzolan reaction when fly ash come into contact with water and calcium hydroxide
in alkaline environment. For that reason, if water eluted from recycled coarse aggregate use mixture water, fly ash is expected to reaction of pozzolan reaction property in early stage. Therefore we conducted an test of ICP-MS, compressive strength, after the mortar make form water eluted from recycled coarse aggregate. And then it is to investigate the effect of the compressive strength properties of fly ash using water eluted from recycled coarse aggregate. According to the experimentation result, ICP-MS analysis showed water eluted from recycled coarse aggregate has a high alkali-ash value of pH of 12 and over. And mixing ratio 30% fly ash mortar using water eluted from recycled coarse aggregate showed a similar strength of plain mortar due to the pozzolan reaction. Also, poor strength in initial age, disadvantage of mortar using fly ash, can be improved as hydration in early age is expedited due to calcium hydroxide
and unhydrated cement component eluted from recycled aggregate mortar.
The Properties of Raw Temperature Recycled Cement using Cementitious Powder from Concrete Waste and Industrial By-Products
Ahn, Jae-Cheol ; Park, Dong-Cheon ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 97~104
The study for using as recycle the cementitious powder consisting among the waste concrete, which accounts for more than 60%, could be achieved by authors. However, many practical problems that the lack of compressive strength due to internal fine aggregate and becoming free lime due to imbalance of raw chemical ingredient remain. In this study, promote a high quality of play cement with cementitious powder from waste concrete, blast furnace slag and fly ash as sub material to development recycled cement in the way of
low-temperature heating. As a result, the fluidity test of recycled mortar using recycled cement, the composition of recycled cement to slaking by CaO greatly reduced by sub material added result in increased liquidity. And also, recycled cement with blast furnace slag as sub material is more superior in improvement of compressive strength than without adding cement.
A Fundamental Study on High-rise Building Worker Management Related to Climate Elements and Psychological Responses - Concentrated on Busan Province Climate Condition -
Kim, Dae-Young ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 105~112
This is a fundamental study for the physiological and psychological responses of construction workers by climate elements change on the unfamiliar high-rise building job conditions. This study is based on the hypothesis that the construction workers, especially steel workers and towercrane operators, should experience more difficulties doing their job on high-rise building job conditions than doing on general building job conditions related to the climate, physiological and psychological elements. This study focuses on the analysis of former literature and research related to the high-rise building and climate to establish the frame of the further research. The study tried to find out major climate elements, construction tasks, and anticipated physiological and psychological symptoms that may have critical effects on the workers of high-rise building. This study is anticipated to provide basic data-based processing the research on safety management for high-rise building construction workers.
Identification of Major Risk Factors in Healthcare Development Project and Effective Management Plan - Focused on the China Healthcare Development Business -
Nam Gung, Jin ; Lee, Sang-Ho ;
Journal of the Architectural Institute of Korea Structure & Construction, volume 29, issue 3, 2013, Pages 113~121
This study identifies the importance of risks in each stage of healthcare business by applying AHP to the business in China. Given that healthcare business consists of five stages including planning, investment, design, construction and operation in this study, the risks are classified into 14 of high-level risks and 42 of low-level risks. The result of AHP reveals that the risks of planning and investment are much more imperative than risks of design and construction, medical equipment and operation. In particular, it reveals that critical risks are initial feasibility analysis, cooperation with local hospital operator in China, Chinese authorities' permission for development or policy change. In order to manage the risks, it is important to discover trustworthy partners at the early stage of the project and to run the business in stable way by analyzing healthcare-related laws and policies cooperatively with partners.