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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of The Korean Society of Civil Engineers
Journal Basic Information
Journal DOI :
Korean Society of Civil Engeneers
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Volume & Issues
Volume 32, Issue 6D - Nov 2012
Volume 32, Issue 6C - Nov 2012
Volume 32, Issue 6B - Nov 2012
Volume 32, Issue 6A - Nov 2012
Volume 32, Issue 5D - Sep 2012
Volume 32, Issue 5C - Sep 2012
Volume 32, Issue 5B - Sep 2012
Volume 32, Issue 5A - Sep 2012
Volume 32, Issue 4D - Jul 2012
Volume 32, Issue 4C - Jul 2012
Volume 32, Issue 4B - Jul 2012
Volume 32, Issue 4A - Jul 2012
Volume 32, Issue 3D - Jun 2012
Volume 32, Issue 3C - Jun 2012
Volume 32, Issue 3B - Jun 2012
Volume 32, Issue 3A - Jun 2012
Volume 32, Issue 2D - Apr 2012
Volume 32, Issue 2C - Apr 2012
Volume 32, Issue 2B - Apr 2012
Volume 32, Issue 2A - Apr 2012
Volume 32, Issue 1D - Feb 2012
Volume 32, Issue 1C - Feb 2012
Volume 32, Issue 1B - Feb 2012
Volume 32, Issue 1A - Feb 2012
Selecting the target year
A Development of the Service Evaluation Criteria for the Expressway Service Areas on the Side of Users
Won, Jaimu ; Jin, Wonyoung ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 421~427
DOI : 10.12652/Ksce.2012.32.5D.421
This study develops the evaluation model which is for assessing on the side of users in expressway service areas, and researchers apply this study for monitoring expressway service areas by routes. The direction of development on Evaluation Criteria is all about on the side of necessity of rest area users, the reflection of current conditions, the construction of total evaluation criteria, and the examination of connecting study with current study. After that, this study examines previous evaluation criterias and researchers will select the primary provision of evaluation through FGI, and they derive the final evaluation criteria throughout the verification of suitability on Evaluation Criteria. Throughout AHP analysis which is a professional survey system of users, researchers dereive on the side of facilities, on the side of environments facilities, on the side of position, and on the side of services in order by the weightings. As you can see in this study, this study also considers quantitative and qualitative factors together, and it allows to evaluate conditions of rest areas. In addition, this study can be a primary study for suggesting the ways of improvements of rest areas by using Spider Map and for monitoring future study.
A Development of the Evaluation Criteria for Bicycle's Facilities of Attending Work and School Trip
Won, Jaimu ; Jin, Wonyoung ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 429~435
DOI : 10.12652/Ksce.2012.32.5D.429
A Development of the Evaluation Criteria on the User's Bicycle Environment for Work and School Trip Purpose: This study suggests future improvements and some current questions about the development of the evaluation criteria on the user's bicycle environment for Work and School Trip Purpose. The direction of development on Evaluation Criteria is all about on the side of necessity of bicycle users, the reflection of new policy, the construction of total evaluation criteria, and the examination of connecting study with current study. This study establishes a Development of the Evaluation Criteria on the User's Bicycle Environment for Work and School Trip Purpose. After that, this study examines previous evaluation criterias and researchers will select the primary provision of evaluation through FGI, and they derive the final evaluation criteria throughout the verification of suitability on Evaluation Criteria. The summery of this study is like this. First, suggestions of improvements of zones in bicycles users' evaluations, Second Suggestions of the current conditions by GIS and the result of model analysis, Third Clarify of major provisions in terms of zones by using Spider Map.
A Conspicuity Effect Study of Fluorescent Orange Color Traffic Sings for Work Zone Application
Ko, Sangkeun ; Choi, Keechoo ; Lee, Sang-Soo ; Yun, Ilsoo ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 437~444
DOI : 10.12652/Ksce.2012.32.5D.437
This study intended to improve traffic safety in work zones using fluorescent orange color traffic signs. For this end, the current problems of existing traffic signs and facilities in work zones were analyzed and some good examples of foreign countries were compared. More specifically, in order to identify current problems, the basic shape and color of traffic signs in use were examined through literature review, surveys and field studies. It was found that the fluorescent color worked more effectively than other colors in terms of visibility and conspicuity in work zone sign system. For evaluation, both Conspicuity surveys and in-door simulator experiments were conducted to effectively assess the merits and demerits of different types of traffic signs for work zones. The results of evaluations showed that black lettering on a fluorescent orange background outperformed more than 70% in terms of visibility and ability to call drivers' attention compared with those from black/red lettering on yellow/white backgrounds currently used at work zones on expressways and national highways. In addition, simulated driving experiment disclosed that drivers recognized the fluorescent orange background sign 15m ahead compared with the yellow background sign and 25m ahead compared with the white background sign, respectively. As for the diamond-shaped "Under Construction" sign, drivers recognized fluorescent orange background 11m ahead compared with the yellow background sign and 19m ahead compared with the white background sign, respectively.
Analysis on Visibility of Delineators by Survey
Kwon, Sung-Dae ; Park, Je-Jin ; Nam, Chang-Kyu ; Ha, Tae-Jun ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 445~451
DOI : 10.12652/Ksce.2012.32.5D.445
Visual changes and speed changes in curved sections of highways are more dangerous than straight sections According to the enquetes conducted by Coalition for Transportation Culture in 1999, about 78% of drivers are dissatisfied with traffic guide and safety signs, with lack of visibility being the largest reason with about 27.9% of respondents indicating it as reason for dissatisfaction. In particular, the lack of visibility during nighttime or bad weather not only threatens driver safety due to poor delivery of information, but also affects the service level of highways. Because of this a new delineation must be installed and managed to enhance driver visibility. In this research, an optimal delineation system to enhance traffic safety is presented. In this research drivers effectively obtained information on highway alignment on the curved sections using a retro-reflection type delineation system and a newly-developed internal lighting delineation system to improve safety on the highways. A statistical comparison was conducted and analysis was done for the delineation systems that enhanced visibility through primary and secondary enquaetes. As a result, inside-lighting delineator will be selected in terms of safety at the curve sections. The inside-lighting delineator was more effective than the retro-reflection delineator on visibility, the necessity of reduction of speed and will reduce the hazard at curve sections. It is anticipated that when a delineation system based on this research is installed, a reduction in the number the number and severity of traffic accidents on curved sections will be reduced. In addition this system will more effectively provide drivers with information about highway alignment.
The Life Expectancy Making Model for Construction Equipment
Lee, Yongsu ; Kim, Cheol Min ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 453~461
DOI : 10.12652/Ksce.2012.32.5D.453
Life analysis is conducted for economic analysis of equipment or facilities. The purpose of life analysis is to predict future indicators for scrapping construction equipment, and establish and utilize a wide variety of business strategies according to data predictions. First, this study shows the methods to figure out average life, life expectancy and life prediction of construction equipment and the analysis of life making methods, using survival curves. Second, the study proposes and examines the life expectancy making model depending on revenues and expenses. The result of the study reveals that the economic life of the same equipment varies with expenses, revenues and the initial cost. The life expectancy making model for construction equipment reflects respective management status for equipment and will help efficient management for companies.
Strategy Improvement of Construction Management in the Owner's View Point
Lee, Sang-Ok ; Park, Jin-Hong ; Jang, Won-Suk ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 463~472
DOI : 10.12652/Ksce.2012.32.5D.463
Exemplary contracts of construction management (CM) including highway projects have been carried out in the civil engineering area over the past ten years. However, practical and administrative challenges as transitional circumstances have been revealed in the different participants of supervision, inspection and construction management. Thus, it is important to internally overcome problems and negative perception encountered in civil engineering, and to promote the efficiencies in construction cost and quality. In addition, external efforts should be put to market opening, globalization, and technology development for competitiveness and high value industry. While it is critical to establish the concrete CM system by collaborating with various participants, proven architecture and system have not been provided because of incorrect measurement of CM accomplishment, overlap of responsibility between CM and supervision, and slow deployment in construction field. This paper analyzed the current CM practices and business environments, and presented the possible solutions for strategy improvement of CM in the owner's view point.
Development of Business Process Model for Overseas Natural Gas Pipeline Project at the Project Planning Phase
Sin, Eonill ; Han, Seung-Heon ; Jang, Woosik ; Lee, Yong-Wook ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 473~481
DOI : 10.12652/Ksce.2012.32.5D.473
Demand of Natural Gas (NG) consumption is continuously increasing by long service life and low environmental impact than other fossil fuels. Because of this reasons, Gas wells exploration and huge LNG plant construction project are being boosted world-widely. Especially, overseas NG pipe-line projects are emerging by considering safe and efficiency at the inter-country sections. At the same time, Korean contractors are being achieved to record-breaking performance at 2011's overseas construction market and 80% of new-record was attained from overseas plant construction projects. Nevertheless, Korean contractors are behind than overseas leading contractors by geographical distance from gas wells and concentrated demand for storage plant. In these reasons, this paper aims to develop the standardized business process model(BPM) for overseas NG pipe-line project at project planning phase to support the project entry. To this aim, first of all, extract the BPM through the broad literature and overseas construction market review and domestic/overseas pipe-line project analysis. Second, Test-bed was performed to confirm of practical applicability by 4 experts. And then 15 experts survey were performed to validate the usability and effectiveness of BPM for overseas NG pipe-line project. Consequently, if Korean contractors are using this BPM with their own know-how and experiences, it will be returned to more reasonable and rational references for decision making in overseas NG pipe-line project.
A Study on the Determination of Slip-up Time for Slip-Form System using Surface Wave Velocity
Kim, Heeseok ; Kim, Young Jin ; Chin, Won Jong ; Yoon, Hyejin ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 483~492
DOI : 10.12652/Ksce.2012.32.5D.483
The early setting time of concrete is an important factor determining the slip up velocity of the slip-form system. Accordingly, need is for a technique evaluating the early setting time in order to secure the safety of the slip-form system and the construction quality of concrete. This paper intends to estimate the early setting time by evaluating the setting degree of concrete using surface wave velocity so as to determine the slip up time of the slip-form system. Penetration resistance test and compressive strength test are performed first to clarify the relationship between the early setting time of concrete and the compressive strength. Then, compressive strength test and ultrasonic wave test are conducted to examine the relation between the compressive strength and the surface wave velocity. Continuous wavelet transform is adopted to measure the surface wave velocity. Numerical analysis is carried out to demonstrate the appropriateness of the application of continuous wavelet transform. Based on these results, the propagation velocity of the surface wave required for the slip up of slip-form system is suggested. Finally, a reduced model test of the slip-form system is conducted to verify the feasibility of the proposed surface wave velocity for the determination of th slip up velocity.
Strategies for Multilateral Development Banks Utilization to Enhance International Construction Competitiveness
Sohn, Tae-Hong ; Jung, Chang-Goo ; Jang, Hyoun-Seung ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 493~498
DOI : 10.12652/Ksce.2012.32.5D.493
Korean construction companies have maintained stable market share based on high technology and cost competitiveness although international construction market has been stalled due to increasing global economy uncertainties. However, Korean construction companies have relied heavily on the general types of projects in Middle East and Asia although the portion of different types of projects such as Build-Transfer-Operate (BTO), Build-Transfer-Lease (BTL), and Public-Private-Partnership (PPP) has been increasing in the market. When delivering huge projects requiring contractors deal with activities from project planning to operation, securing finance sources and profitability is deemed critical. Therefore, Korean construction companies need more attentions on the construction market supported by Multilateral Development Banks. However, Korean construction companies have not utilized effective strategies for the market entry and also government supportive policies are not useful enough to help construction companies. This study aims both to analyze the contract structure of Korean construction companies for presenting critical factors that need to be prepared and to suggest various methods that can be applied to support construction companies that have much interest in the Multilateral Development Banks. According to the results of study, it is important that Korean government provide structural information system, make a specialized organization, prevent over-heating among Korean construction companies, and collaborate with Official Development Agency. In addition, it appeared that the fairness and financial stability of project have recognized main advantages of the Multilateral Development Banks.
A Study on the Compression of Construction Period by the Improvement of Trench Excavation for Slurry Wall Method
Lee, Young Soo ; Park, Hyung-Keun ; Kang, Kyubyung ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 499~505
DOI : 10.12652/Ksce.2012.32.5D.499
As the excavation depths during excavation works in urban sites are getting deeper and bigger, It is necessary to study for the improvements to solve the problems in the excavation processes. This research deals with the excavation method that can not only minimize the effect on the surrounding constructions, but also shorten the construction period of the excavation work. For this research, there have been an extensive literature review of the bibliographic data about Slurry Wall Method, which is recognized around the world, and the analysis of the major problems in the existing ineffective construction step. These efforts led to the technical improvements. Accordingly, a new construction method applied with the new technical factors has been suggested, and it was possible to compare Slurry Wall Method with the construction method and analyze them on the base of the examples using the suggested method. This new method decreased the excavation period by 15 days. It took only 33days to finish the excavation work, as compared to 48 days that can be seen on the pre-modification schedule. Furthermore, the suggested method in this research is safer, more economically feasible, and better for the environment than Slurry Wall Method. It will contribute to shortening the construction period of Slurry Wall Method in the end.
Study on the Distribution Characteristics of Storm Damage Area : The Case of Gyeonggi-do
Kang, Sangjun ; Jung, Juchul ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 507~517
DOI : 10.12652/Ksce.2012.32.5D.507
The main purpose of this study is to address flooding resilient land use management strategy based on the distributional characteristics of storm damage areas in Gyeonggi-do. The employed methods are 1) Exploratory Spatial Data Analysis (ESDA) to understand the spatial patterns of storm damage areas occurred from 2005 to 2009, 2) Local Indicator of Spatial Association (LISA) to examine spatial autocorrelation existed in storm damage areas for the year of 2009. The results show that 1) crop land damage is very sensitive to heavy precipitation, 2) damaged buildings are found in all over the Gyeonggi areas, but relatively more damages are in the regions closed to the City of Seoul, 3) damaged roads-bridges, streams, and reaches are found in mostly rural areas, 4) building and crop land damage occurs mostly in lowlands with different spatial patterns. These findings imply that 1) it will be useful to consider the average distances and slopes of damaged building and crop lands from streams for the decision making of land use management strategy, 2) further management efforts are required in the north, east, and south regions of Gyeonggi areas to prevent roads-bridge, stream, and reach damages, 3) the present land use pattern needs to be carefully investigated by considering the damage clustered areas for the year of 2009 based on watershed and municipality boundaries.
A Study on Rail Station-Influenced Area Development Combined with the Optimal Connection and Transfer Facility
Chung, Chul ; Kim, Sigon ; Kim, Yeonkyu ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 519~525
DOI : 10.12652/Ksce.2012.32.5D.519
This study suggests 3 different elements to develop a rail station-influenced area effectively. Above all, several typical models of TOD (Transit Oriented Development)are suggested. They consider the land use types around a rail station, characteristics of a rail station whether it serves a single line or multiple lines. a method of developing a rail station-influenced area. Secondly, the optimal level of service is suggested for connection facility and access modes. Finally, the allocation criteria of on-and-off facility to provide convenient transfer activity.
Indoor 3D Modeling Approach based on Terrestrial LiDAR
Hong, Sungchul ; Park, Il-Suk ; Heo, Joon ; Choi, Hyunsang ;
Journal of The Korean Society of Civil Engineers, volume 32, issue 5D, 2012, Pages 527~532
DOI : 10.12652/Ksce.2012.32.5D.527
Terrestrial LiDAR emerges as a main mapping technology for indoor 3D cadastre, cultural heritage conservation and, building management in that it provides fast, accurate, and reliable 3D data. In this paper, a new 3D modeling method consisting of segmentation stage and outline extraction stage is proposed to develop indoor 3D model from the terrestrial LiDAR. In the segmentation process, RANSAC and a refinement grid is used to identify points that belong to identical planar planes. In the outline tracing process, a tracing grid and a data conversion method are used to extract outlines of indoor 3D models. However, despite of an improvement of productivity, the proposed approach requires an optimization process to adjust parameters such as a threshold of the RANSAC and sizes of the refinement and outline extraction grids. Furthermore, it is required to model curvilinear and rounded shape of the indoor structures.