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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of The Korean Society of Civil Engineers
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Journal DOI :
Korean Society of Civil Engeneers
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Volume & Issues
Volume 24, Issue 6D - Nov 2004
Volume 24, Issue 6C - Nov 2004
Volume 24, Issue 6B - Nov 2004
Volume 24, Issue 6A - Nov 2004
Volume 24, Issue 5D - Sep 2004
Volume 24, Issue 5C - Sep 2004
Volume 24, Issue 5B - Sep 2004
Volume 24, Issue 5A - Sep 2004
Volume 24, Issue 4D - Jul 2004
Volume 24, Issue 4C - Jul 2004
Volume 24, Issue 4B - Jul 2004
Volume 24, Issue 4A - Jul 2004
Volume 24, Issue 3D - May 2004
Volume 24, Issue 3C - May 2004
Volume 24, Issue 3B - May 2004
Volume 24, Issue 3A - May 2004
Volume 24, Issue 2D - Mar 2004
Volume 24, Issue 2C - Mar 2004
Volume 24, Issue 2B - Mar 2004
Volume 24, Issue 2A - Mar 2004
Volume 24, Issue 1D - Jan 2004
Volume 24, Issue 1C - Jan 2004
Volume 24, Issue 1B - Jan 2004
Volume 24, Issue 1A - Jan 2004
Selecting the target year
Determination of Link Travel Time Using Real Time GPS Data
Lee, Young-Woo ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 125~131
The result of link driving test showed that cruising time in a link was changing point to point according to traffic and road conditions. Therefore, collecting traffic data using GPS seems more rational than that using detectors which have space restriction. Users of traffic information are demanding a wide range of real-time traffic information. However, the limitation in collecting real-time traffic information makes it difficult to analyze or provide the real-time traffic information. To improve the methods of collecting real-tittle traffic data, this research examines the possibility of collecting real-time traffic data using GPS. Real-time collection of traffic data is key to the production and provision of real-time traffic information. This research conducted real-time data collection using GPS-based RTK assessment to proceed with the study on link travel times. This research result showed that the patterns of going through traffic were divided up to 2 in the link travel times. The first pattern is the delay on the red ball at the downstream node before passing the link and the other is passing at the green ball without having to be held up by the red ball. Therefore, it will be more accurate to divide up the link travel time into the one involving delay and the other without delay, rather than using the average link travel time in terms of assessing the traffic situation.
A Study of Warrant for Staggered Pedestrian Crossing
Son, Young-Tae ; Jin, Zhe-Hu ; Choi, Kee-Choo ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 133~141
Green time of pedestrian crossings on wide roadway is usually long due to corresponding pedestrians' crossing time. Especially, where a crosswalk is placed at an intersection at which minor roadway with a low traffic flow rate and major roadway with a high traffic flow rate cross, right-of-way for minor roadway is allocated more unnecessarily for the low traffic to provide minimum green time for pedestrians. A staggered crossing is used where length of crosswalk is too large. A staggered crossings can be also used for reducing delays of vehicles at intersections by giving different green phases to pedestrians directionally and allocate green times to vehicles of major roadways efficiently. This research describes a method to calculate delays of vehicles and pedestrians, and shows criteria to install staggered pedestrian crossings for some traffic conditions.
An Experience of Construction and Operation of the Incheon Airport Exclusive Expressway by Private Capital
Kim, Si-Gon ; Oh, Jae-Hak ; Kang, Seung-Pil ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 143~148
The Incheon International Airport Expressway has been constructed as Korea's first private capital investment project for Social Overhead Capital. This paper aims to introduce the processes from the general procedures for designating a concessionaire to the experiences in operating this expressway. Major issues of the Incheon International Airport Expressway Project are, also, are explained. They are government subsidy, ownership, the period of use, and traffic volumes. Finally, before and after study has been conducted in terms of traffic volumes. The pattern of traffic volume's discrepancy between the forecast and the real volume is analyzed. The factors and reasons are also analyzed and several lessons learned are listed.
Developing a Methodology of Calculating Sight Distances at Crest Curves Considering Effective Visible Heights
Son, Young-Tae ; Han, Sang-Min ; Choi, Kee-Choo ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 149~154
The alignment of a road is a consecutive and solid shape of the center-line. Since geometric design of a roadway essentially influence upon traffic flow, an extreme and unsuitable roadway design can cause accidents, decrease of traffic capacity and increase of construction costs. Sight distance is highly important when designing a roadway so that minimum stopping sight distance should always be provided to drivers at all locations along the roadway. Design method of crest curve according to Korean roadway design guides which is based on the AASHTO's method has an assumption when calculating sight distances that drivers perceive an object immediately when the object shows its edge above the crest regardless of design speed. However, drivers usually don't perceive an object until the object shows more of it's part above the crest curve. The height of part of an object when a driver first perceive is named as 'Effective Visible Height' in this paper. This paper investigates the values of Effective Visible Height which vary by design speed. In addition, this paper calculates K(rate of vertical curvature) that provides sufficient stopping sight distance considering the effective visible height.
A VMS Operation Model based on Game Theory
Choi, Kee-Choo ; Jang, Jeong-A ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 155~165
Variable Message Signs (VMS) have become one of the most important methods of providing on-route traffic information. Most of current status of VMS operations, however, often neglect the behavior of road users' responses and just display a set of pre-specified messages in a routine manner. This paper tries to develop a more systematic VMS operation scheme. More specifically, it deals with the strategy of VMS operation in terms of message set selection and the determination of the message display duration. Agame theoretic approach has been used to model road users and operator as players, along with payoff matrices represented by the difference between travel times associated with UE (user equilibrium) and SO (system optimal) statuses, respectively. The convex combination algorithm has been used with linear programming to solve the postulated game problem. As a result, the exact message set selection and display duration for various traffic conditions have been obtained for a network. The employed strategy could successfully be applied in a real world situation. Some limitations and future research agenda have also been discussed.
Development of an Incident Detection Algorithm under Uncongested Traffic Conditions for Urban Freeway Using Hybrid Genetic-Fuzzy Model
Kim, Young-Chan ; Im, Sung-Man ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 167~173
In an attempt to reduce the impact of incidents on freeways, several incident detection algorithms have been developed and tested in the past three decades. Most existing incident detection algorithms are very difficult to detect incidents under uncongested traffic conditions. The primary objective of this paper is to develop the model capable of detecting an incident under uncongested traffic conditions and calibrating the parameters of the model automatically. We have analyzed the incident data on Naebu freeway in Seoul, and classified an incident condition four cases by the congested conditions of the road. Then, the discriminant variables detecting the incident have been developed under uncongested franc conditions, and the hybrid genetic fuzzy algorithm is presented. The developed algorithm was evaluated and verified using real incident data in the Nae-bu FTMS. In addition to the algorithm, two freeway incident detection algorithms(Basic california, DELOS) have been tested using the same data. The proposed algorithm's performance was very good to compare with the performance of the traditional incident detection algorithms under uncongested traffic conditions.
A Guideline for the Position of Crosswalks at Signalized Intersections with Shared Right Turn Lanes
Kim, Dong-Nyong ; Shin, Jin-Chul ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 175~186
The right turn vehicles on a shared right turn lane sometimes block the through vehicles due to the shortage of waiting spaces in front of the crosswalks on the cross road. The purpose of this study is to establish the guideline for the position of cross-walks maximizing the throughputs with the variation of cycle length, green time, pedestrian green time and ratio of right rum vehicle. The throughputs of shared right turn lane were investigated on several intersections. A simulation model based on probability theory was developed to get the throughputs. The model was verified through comparing the theoretical results with the field data. The throughputs for various ranges of parameters were calculated using the simulation model with a different number of waiting spaces which vehicles turning right can wait during pedestrian green are present. The relationship between the number of waiting spaces and the position of crosswalks was also investigated on many intersections and a simple regression model was derived. Thus the guideline for the position of crosswalks with the variation of parameters is prepared. According to the results, the optimum distance from the curb line to the crosswalks increases as the ratio of right turn vehicles increases and as the pedestrian green time increases. The result also shows the optimum distance ranging from 3.0m to 13.0m in case of four-lane cross roads and from 3.5m to 11.0m in case of six-lane cross roads depending on the geometric and traffic conditions.
The Impacts of Cheonggye Stream Restoration on Traffic and Travel Behavior
Hwang, Kee-Yeon ; Sohn, Kee-Min ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 187~194
For restoring the covered Cheonggye Stream traversing at the center of Seoul, the 5.8km Cheonggy Elevated highway was closed and Cheonggye Street covering the stream was reduced from 4 lanes to 2 lanes in each direction on July 1st, 2003. There were many concerns among citizens that the traffic congestion in the CBD would be worsening because of the serious loss of road capacity. The monitoring results of traffic situation show that the alternative streets to Cheonggye highway experienced a minor growth of traffic volumes. This finding means that some auto-drivers changed their travel routes to minimize the time loss. Also, it appears that some drivers changed their departure times. As shown in the volume counts by one hour, the share of 7-8 o'clock departure increased while 8-9 o'clock's decreased. Especially, the traffic volume between 7:00 and 7:15 recorded the most drastic increases. The mode shift is another change adopted by the citizens surveyed. The subway users increased continuously for two weeks, as opposed to the number of bus users. It is because the punctuality of subway became the far more attractive element when people make decisions on travel mode. The 1,500 sample survey of commuters and residents affected directly by the construction work restated that there were clear changes among citizens in travel mode and departure time. The study results tell us that the future of urban transportation policy should be directed more toward changing travel behavior rather than toward the facility construction and traffic operation.
Permanent Deformation Characteristics of Hot Mix Asphalt by Various Creep Tests
Jeon, Joo-Yong ; Lee, Kwan-Ho ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 195~203
The purpose of this research was to evaluate and suggest the permanent deformation properties of asphalt paving materials with recycled waste materials, like waste foundry sand and various slags. Couple of laboratory tests with various loadings and confining pressure were conducted on for evaluation of permanent deformation of hot mix asphalt. Judging from the creep test, hot mix asphalt with steel slag or furnace slag as coarse aggregates showed the lower permanent deformation than common aggregates. Those were reduced up to more than 50% of permanent deformation of hot mix asphalt. The permanent deformation by static creep test was lower than by repeated creep test. Type of loading, testing temperature, and confining pressure should be considered as important factors for evaluation of permanent deformation of hot mix asphalt. VESYS method was employed and its results were similar to static or repeated creep tests. From the prediction of rutting potential by VESYS, the steel slag mixtures showed better performance than the common aggregate mixtures.
Effects of Intermittent and Continuous Vibration on Latex-Modified Concrete
Lee, Joo-Hyung ; Hong, Chang-Woo ; Jeong, Won-Kyong ; Yun, Kyong-Ku ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 205~211
The purpose of this study was to evaluate the effects of intermittent and continuous vibration on strength development and chloride-ion rapid permeability of latex-modified concrete (LMC) as curing temperature variated. Main experimental variables were cement type (ordinary portland and rapid-setting cements), curing temperature (
), re-vibration types (continuous and intermittent), and re-vibration starting points (initial setting and 24 hours after). The compressive and flexural strengths, and chloride-ion rapid permeability were measured to analyze the characteristic of the developed LMC and RSLMC on hardened concrete. The test results showed that strengths of LMC increased as the curing temperature increased from
. However, they decreased at higher temperature of
under 0.25cm/sec vibration. The effects of re-vibration types on LMC and RSLMC were extremely small. The chloride-ion rapid permeability of LMC and RSLMC decreased with curing temperature rise, but the effects of re-vibration starting point were extremely small at all concrete mixtures regardless of curing temperatures.
Freezing and Thawing Characteristics of Subgrade Soils in Korea
Kweon, Gi-Chul ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 213~219
Seven subgrade soils in Korea were subjected to laboratory open-system freeze-thaw tests and triaxial compression tests in order to determine the frost heaving and thaw-weakening characteristics of subgrade soils. By comparing frost heaving of subgrade soils and subbase materials, it was found that tested subgrade soils with low fine content are less frost-susceptible compare than the tested subbsae materials. It was considered that frost-susceptibility classification method which is suggested by COE (1985) based on the percentage of soil finer than 0.02mm is acceptable criterion for a qualitative assessment of frost susceptibility for subgrade soils in Korea.
An Analytical Approach for Evaluation of Embedded Depth of a Guardrail Post in Pavement
Kim, Ho-Kyung ; Kim, Yong-Seok ; Noh, Kwan-Sub ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 221~228
Though the current specification is well describing the embedded depth of a guardrail post in bear grounds, any information is not given yet when the posts are installed in pavements. Since the soil resistance is expected to increase when a post is installed in pavements, this study proposed an analytical approach to investigate an equivalent embedded depth for pavements. The linear and nonlinear springs are utilized in idealizing the soil resistance including ascon pavements. The input parameters for these spring models are calibrated with an existing experimental result. An embedded depth was investigated according to the proposed analytical approach for the preliminary design of actual crash tests or static/dynamic load tests. An equivalent embedded depth, which can secure the same performance level with the standard case of bear grounds, is evaluated and proposed. The considered performance criteria consist of the maximum deflection of guardrail and the damage indices of passengers. Based on the simulation results, the possibility of reducing the embedded depth is confirmed when posts are installed in pavements. However, a series of experimental research should be followed for the standardization.
Risk Analysis Model Using Weights for Risk Impact of Construction Schedule and Cost
Kang, Leen-Seok ; Lee, Syeung-Youl ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 229~238
Construction projects include various risk factors that have a bad effect on construction schedule and cost through the project life cycle. The existing tools for risk management evaluate the risk impact and probability for construction schedule and cost as a same impact value. However, the risk impact and probability can have different values according to the specific features of a construction project. This study suggests a new risk analysis model that assigns the different impact values for the construction schedule and cost. For the suggested model, the concept of different weights for the construction schedule and cost is introduced and they are calculated by using multiplication of triangle-fuzzy, fuzzy measurance and Choquet integral calculus. Finally, the study develops a web-based risk analysis system by the suggested model, and the system is verified by a case study including a bridge construction.
Study on Strength Test of Dry and Wet Process Shotcrete in NATM Tunnel
Lee, Yang-Kyoo ; Jeon, Jun-Tai ; Kim, Jong-Ryeol ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 239~245
The Important role of shotcrete is to increase the bearing capacity and to protect the excavated surface from erosion by preventing falling of rock mass In NATM tunnel. And shotcrete prevents movement of rock and concentration of stress. Shotcreting method is divided into two types as dry Process and wet Process. Since 1997, wet process method has been used more frequently than dry process method in field works. Steel fiber reinforcement concrete is concrete that improve resistivity for tension strength, bending strength and crack separating short steel fiber uniformly within concrete. Experimental result about steel fiber reinforcement reduces the concrete rebound rate and increased strength. So, steel fiber is used much from 1997. Also, steel fiber reinforcement control local crack by increasing tensile resistant capacity of concrete, and improve concrete strength and mechanical behavior characteristics. This study executes a analysis of compressive strength, bending strength, and core strength test by analyzing the actual construction data fur wet process type and dry process type of shotcreting method in NATM tunnel. Therefore, presented useful data that can apply suitably in domestic construction real condition hereafter by presenting the results.
An Analysis of Satisfaction in Construction Supply Chain Management
Jang, Hyoun-Seung ; Choi, Seok-In ; Woo, Sung-Kwon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 247~253
Customer satisfaction and continuous improvement are the fundamental goals of construction supply chain. Construction management researchers have only recently highlighted the relationship between the contractors and the ultimate customers as known as owner to improve the understanding of the significance of customer satisfaction regarding construction supply chain management. But this paper focused on the relationship between the material suppliers and the contractors as a customer point of view. However, the project manager who coordinates construction supply chain with all parties to a contract is very important to the successful completion of a construction project. This study contributes an extension of the framework for construction material SCM in customer satisfaction. Through a survey, the general importance that a project manager has to be focused on construction SCM process is established. This paper examines how construction supply chain affect a project man ager's level of satisfaction and also defines through the use of a survey of project manager's satisfaction with their own processes which supply chain factors correlate the most with customer satisfaction. Two hundred twenty-three experienced managers provided valuable data to the study. Five important factors relating to satisfaction were found through interviews with project managers and a literature review. They are personnel, material flow, schedule adherence, contractor's organization, and information flow. The study results suggest that material flow and information flow are worthy of the most attention.
Analysis of Relative Importance of Critical Success Factors in the Various Types of CM Project
Yu, Jae-Hee ; Choi, Jae-Ho ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 255~263
Recently, the amounts of CM contracts has been markedly increased through the efforts of CM-related stakeholders in domestic. The construction industry realized the importance of improving the CM capability to prove the effectiveness of CM method so that owners prefer to choose the CM. This led to the need for improving CM process by utilizing CSFs (Critical Success Factors) which has been identified by previous research efforts. However, there has been a little work done for how to apply the CSFs to the industry for improving the CM capability and defining the relationship between the CSFs and various types of CM project currently on-going. Therefore, this study has three main objectives in achieving the higher level of CM capability: 1) Proposing a Sustainable CM Capability Development Process, 2) Measuring the current level of CM capability, and 3) Defining the relationship between CSFs and various types of CM project through Criticality Matrix method. The objectives 2) and 3) are the main components comprising the process in objective 1). It is believed that the results of this study can develop a baseline from which effective resource allocation of CM-oriented organization and roadmap for improving the CM capability can be formulated.
A Study on the Construction Claims Without Privity and their Response Strategies
Han, Sung-Heon ; Yun, Dae-Jung ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 265~274
The construction project is a complex undertaking involving multiple participants. Conflicts are inherently natural in the construction projects and subsequently a success of projects mainly depends on how well to cope with the conflicts. In the past, courts usually took the position that the professional's exposure in damages for negligent performance of any of his/her duties would not extend to strangers to the contractual arrangement. However, courts today generally reject that rationale which was earlier in vogue and protect architects, engineers, and contractors from being liable to third parties. It implies that the lack of privity of contract could rarely protect a profession in a suit alleging the negligence or professional malpractice in preparing plans or specifications. The main goal of this paper is to enhance the understanding of the legal aspect of privity and to provide the trend of no-privity disputes through the analysis of lawsuit cases during the last 40 years. On the base of the analysis, response strategies to lessen the construction disputes without privity is presented.
A Study on Reduce Scheme of Design Error in Turn-Key Projects
Kim, Byeong-Soo ; Kim, Kyong-Ju ; Chun, Jin-Ku ; Kang, Leen-Seok ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 275~283
In turn-key projects, cost increase by design errors is not allowed because a contractor prepares the design. Therefore, cost increase by design errors results in burden to the prime contractor. The rate of profit of the contractor decreases finally. In addition, unknown design errors bring not only schedule delay but also serious quality problem. This study tries to analyzes problems including cost increase, process delay and poor quality by investigating causes of design errors, and then presents a scheme so as to reduce design errors.
Numerical Noise Analysis of High-Speed Railway System with Various Shapes of Noise Barrier
Chung, Heung-Jin ; Ryu, Young-Joon ; Chung, Myung-Chae ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 285~292
In this study, the minimum height and optimal shape of noise barrier for high-speed railway system are proposed. The noise characteristics of high-speed railway system are quite different to those of conventional railway system. Therefore conventional design method for noise barrier is no longer effective for high-speed railway system. Since the aerodynamic noise is governing in high-speed railway system, noise with low frequency of around 200 Hz is significant. In order to determine optimal height of noise barrier which satisfies local requirements, we analyzed the system numerically and 2.7m heights is proposed as an optimal value. And we also analyzed various types of noise barrier system to verify the performance of each system. U-type and round type of barrier top shape show good performance in particularly for the noise of lower frequency which is governing noise source of high-speed railway system.
Improvement of Water Area Classification During a Flood Using RADARSAT SAR Imagery and Terrain Informations In Mountainous Area
Sohn, Hong-Gyoo ; Song, Yeong-Sun ; Chang, Hoon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 293~301
The brightness values of Synthetic Aperture Radar (SAR) imagery are largely influenced by the local terrain relief. In water areas such as oceans and rivers with relatively flat areas, SAR imagery has lower backscattered signals than other surfaces. Although SAR imagery with its own energy sources is very applicable to flood monitoring due to its sensitivity to the water area, several distortions caused by local terrain relief must be carefully considered before actual classification process. Since backscattering coefficients of shadow area are very similar to those of the water area, it is essential to remove the radiometric distortion caused by local relief especially in mountainous areas. In this study we tested four different cases of local terrain relief compensation processes based on the preprocessing of input SAR imagery and local surface information such as elevation and slopes for accurate water extent. The case when the input RADARSAT SAR imagery is classified with the local slope information is best in terms of flood area estimation, even in small streams and watershed of different elevation categories. Consequently in mountainous areas the combination of SAR imagery and slope information is the best combination in the estimation of inundated areas during the flood.
Fusion Software Development of Satellite Image and Suitability Analysis
Han, Seung-Hee ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 303~310
In recent years, there is actively increasing to study of an image fusion by reason of a lot of advantage. This study develops an image fusion program through a spatial information of high resolution images and a spectral information of multispectral images are fused. Also, this study analyzes a merits and demerits of image fusion techniques into the application of a test image. Analysis showed that the wavelet image fusion technique is good for a variety of test fields.
A Study on the 3-dimensional Modeling of Buildings in Urban Areas Using Digital Maps and LiDAR Data
Lee, Won-Hee ; Kim, Jung-Ok ; Yu, Ki-Yun ; Kim, Yong-Il ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 311~318
Buildings in urban areas take large percentage in city structures, of which 3-dimensional information is needed for variety of applications such as facility management system, road design, building land development or town planning. Recently, many studies on the 3-dimensional modeling of buildings have been done, which are by the help of not only the development of analysis algorithm but also the spread of aerial imagery, high-resolution satellite imagery, LiDAR data and digital photogrammetry system. Among the data, LiDAR data is being regarded as one of the most useful data because it allows acquisition of the precise DSM. However, using only the LiDAR data to acquire 3-dimensional modeling of buildings has some problems because it needs manual linearizion and subjective reconstruction. Thus, in this paper, digital maps of 1:5,000 scale and LiDAR data are used together to extract the 3-dimensional model. The 3-dimensional modeling of buildings are very well done and the user's manual works are needed not so much. From the accuracy test results using aerial imagery and digitizing, the 3-dimensional modeling of buildings in urban areas and renewal of digital map are feasible by automatic manner to some extent.
Automation of the Construction Process Management for Spatial Database
Choi, Byoung-Gil ; Kim, Sung-Soo ; Cho, Kwang-Hee ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 319~325
This study is aimed at automation of the construction process management for spatial database. Knowhow of five GIS firms and provisions related to spatial database construction was analyzed. In this study, the process of spatial database construction was standardized. The system from this study has the capability to manage the process of construction database using GIS and to deal with the metadata of unit map, generated from the process, systematically and continuously. The process was also shown by using either Gantt chart or PERT chart after developing an interface for "MS Project". A software "Visual Basic for Application" was used for this study.
The Development of 3D Digital Image Generation System Based on Digital Photogrammetry
Um, Dae-Yong ; Yun, Hee-Cheon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 2D, 2004, Pages 327~335
In this study, it was intended to develop 3D digital image generation system applied digital photogrammetry for 3D digital image generation with high precision. For this, formality style processing routine for creation of 3D digital image was developed by simplifying the process of digital photogrammetry, and the 3D digital image generation system was designed by using object-oriented technique which strengthen the user interface. It could created 3D mesh and 3D digital image to use developing system and offer detailed information more and realistic representation could embody possible condition. Hereafter, it is expected that can maximize of detailed measurement and visual analysis effect.