Go to the main menu
Skip to content
Go to bottom
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
Editor in Chief :
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
A Study of the Refined Method of Conflicts Data with Fuzzy-Neural Networks System
Kim, Won-Chul ; Choi, Jae-Won ; Kim, Seong-Ho ; Chang, Myoung-Soon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 839~844
When the number of reported accidents to evaluate the safety of intersections is insufficient, we can use the traffic conflict technique. However, It raises a problem related to the variation of individual surveyor's recognition. This paper, to reduce the variation of individual surveyor's recognition, uses the Fuzzy Neural Network System(FNN). It is made up of a Fuzzy which is used to reduce the human obscurity, and a Neural Network System which is used to abstract, learn and memorize the certain events like the activity of human brain. At the result, the proposed model of this paper showed that it reduced the variation of surveyor's recognition until about 70 percentiles and could construct a more accurate traffic conflict model.
Development Freight Generation Models in Metropolitan Area According to Industries and Freight Classification Codes
Choi, Chang-Ho ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 845~852
Freight generation models have developed in korea were estimated by spatial unit method which predict freight flow by zone. But on the other hand it is also important to predict freight flow which is generated from each company in zone. This is because of the easy of flow unit method: to estimate freight flow using spatial unit method various social economic indices as well as freight facilities data must be obtained, where as flow unit method need to only the data of company. This study developed new estimation models to predict freight generation in metropolitan area according to not only industrial freight facilities like as manufacturer, wholesale and retail but also freight classification codes. The subjects of this study were companies in metropolitan area and the types of model were exponential regression models. The adequate explanatory variable in the models were sales. This study have a uniqueness apply micro research method to estimate freight generation not use spatial unit method but use flow unit method by each freight facility.
Effects of Highway Alignments on Fatalities at Curved Sites
Cho, Hey-Jin ; Lee, Jong-Hak ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 853~861
The researches related to geometric conditions and traffic accidents have mainly focused on the accidents spots themselves. However, the unbalanced combinations of road geometric between downstream and upstream may cause traffic accidents because of unexpected road alignments. Therefore, this study aims to investigate the effects of unbalanced road alignments on traffic accidents. The three methods of measurements were adapted; Degree of Curves(DC), Average Radius(AR) and Rate of maximum radius to minimum radius(R/r). Two years fatalities data on national highways were collected. We developed three types of accident rate models with above three methods. The model estimates show that the accident rates increase as the DC and R/r increase while accident rates decrease as the R increases. The models were verified with actual data set by RMSE (Root Mean Square Error). The results of this verification shows that developed models show a strong relationship between the estimated accident rates and actual ones. This study can identify that the unbalanced alignments of roads are just one of the significant factors on the developed models and expect to distribute a foundation of traffic accident's prevention to consider the unbalanced alignments of roads as hazardous roads.
Modelling the Passenger Demand Estimation for Urban Rail Transit based on the Characteristics of Transit Service Area
Kim, Dae-Oung ; Park, Chul-Ku ; Choi, Han-Gju ; Lee, Jin-Wook ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 863~872
In this study, a model estimating passenger demand by station for urban rail transit reflecting the characteristics of transit service area was constructed by using step-wise regression analysis based on the data of the service area in Daegu subway line 1. The dependent variable to the model is the passenger demand(production/attraction) at each station, and the independent variables are the data of transit service area divided into land-use, trip-chain services and employee. Using these data, first we classified the characteristics of the transit service area data by extracting common factors with factor analysis, and classified the type of the transit service area by characteristics with cluster analysis. On the basis of results of these analyses, we constructed a model which forecast production/attraction demand by station reflecting the characteristics of transit service area, and then the estimation accuracy of the model was examined and compared with that of a model not considering the transit service area characteristics. The results showed that a better demand estimation results for urban rail transit can be obtained by the model in which the characteristics of the transit service area was considered.
Diversion Rate Analysis for Various Detour Information on VMS -Focusing on National Road Number 3-
Choi, Kee-Choo ; Jang, Jeong-Ah ; Kim, Sung-Hyun ; Kim, Jong-Sik ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 873~880
Recent proliferation of VMSs (Variable Message Signs) on roadway networks is based on an assumption that the installation of VMSs relieves traffic congestion by diverting current traffic to detour routes, if exist. The purpose of this paper is to verify this assumption. For this, stated preference based actual survey has been conducted to build a logit based information evaluation model. For national route number 3, an average of 21 % of diversion rate has been identified for various messages and thereby the total network travel time can be reduced. Factors affecting the diversion rate are sex, vehicle type, trip purpose, and the recognition of detour routes. Based on these, some VMS operational strategies are highly required for better utilization of the roadway networks around national route number 3.
A Comparative Study about a Value Estimation Method of the Traffic Information - Based on Freeway Traffic Information -
Kim, Jun-Jeong ; Lee, Eui-Eun ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 881~888
On this research, value estimation cases to calculate an appropriate value of the highway traffic information which has been studied for years were made a study by the comparative method. First, how to use fair return principle is somewhat shortage of reality by accessing a information usage fare to a cost price which is invested to creat a service. Second, case of using a price sensitivity Meter has a problem in that both a price sensitivity Meter is mostly used to value estimation of consumption goods and the reliablity of expression under estimate tendency response has an error. third, Contingent Valuation Method is the most resonable solution in that it has been mostly applied to the value estimation of environmental goods which is non consumption goods & intangible value but it calculats a value in comparison to an amount of money to pay for intangible benefits which can be earned by means of the imaginary scenario. Even though the case that is applied to public goods is few, it is in need of development & compensation of the various methods. With the strong points of the Contingent Valuation Method it is useful to value estimation of the public goods.
A Study on the Factors Affecting on the Remaining Life of Airfield Concrete Pavement
Kwon, Soo-Ahn ; Suh, Young-Chan ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 889~894
Airfield concrete pavement evaluation methodology has classified into two categories, One is using the reverse of pavement design process, in which flexural strength of the concrete and past franc is used, and the other is using a mechanistic logic in which elastic modulus are basically used. But it has been skeptical if the flexural strength or modulus of concrete is really an indicative of remaining life. In this study various field tests, as well as lab test, were conducted in loading zone and unloading zone in an old airfield pavement. As a result, It was found from the study that the most important factor affecting on the remaining life was load transfer efficiency rather than flexural or elastic modulus. A validation test was conducted on an other airfield pavement.
The Estimation of Available Sight Distance for Consider Driver Position in Highway Horizontal Alignment
Seo, Dong-Ju ; Lee, Jong-Chool ; Kim, Jong-Won ; Lee, Sung-Rock ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 895~900
In Korea, driver's position is located at the left side of car, so that if median which is higher than driver's eye height exists, actual available sight distance would be shorter than estimating available sight distance by center of crossroads. In this study, we developed the available sight distance estimation formulas which in focused to center of crossroad and driver's position. Then, we applied these formulas to object road. In result, the value which estimated available sight distance at IP6(R=960m), IP25(R=440m), IP27(R=450m) three road section has passed the standard stopping sight distance regulation value. But, the available sight distance which estimated by concerning to driver's position couldn't passed the standard stopping sight distance regulation value. From now on, when designing the highway, sight distance would be concerned by driver's position for the security of sight distance.
Evaluation of the Modified and Special Asphalt Mixtures
Park, Tae-Soon ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 901~909
The various kinds of the modified and special asphalt mixtures are using in Korea since the mid 1990's. These asphalt are paying more attentions due to the hot weather and the increase of the traffic loads. Proper use of the modified and special asphalt expects to increase of the pavement life and to provide the pleasant driving condition to the public, also can save the maintenance cost. This paper presents the test results on the modified and special mixtures using in Korea currently. This study is conducted to investigate the characteristics of the modified and special mixtures. The Marshall tests, the indirect tensile tests, the moisture susceptibility tests, the resilient modulus tests and the creep tests were conducted to find out the performance of the mixtures. The test results show that each modified and special asphalt mixture performs differently and needs to be clearly understood the behavior of the these asphalt mixtures before use.
Performance Evaluation of Public Construction Projects in Korea
Park, Hee-Sung ; Kim, Sang-Bum ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 911~917
Korean construction industry takes 14.5% of GDP and Korean government spends about 40 trillion won per you for public infrastructure projects that include grass roots and rehabilitation projects. Korean government established the 'Policy for Public Project Implementation' to improve the performance and process of public projects. The objective of the study is to investigate the degree of performance improvement of public projects since implementation of the policy. The study first analyzed domestic and overseas construction policies and results of policy implementation. The results show that public project budget would be saved by 11.3% per year that was expected at 20% at the policy establishment. Performance improvement of public projects can be achived by establishment, implementation, measurement, and evaluation of effective policy.
A Study on the Estimation of Resource Quantity Per Unit for Steel Bridge Construction
Kyung, Kab-Soo ; Kang, Ji-Yoon ; Kim, Kyung-Ju ; Jung, Kyung-Sup ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 919~927
The major objective of this paper is to establish quantity surveying method and reasonable quantity per unit as criteria for the cost estimation of steel bridge construction. This paper investigates the tendency of the modification on the resource quantity per unit in steel bridge construction. In order to evaluate whether Korean criterion on the resource quantity per unit is proper, this research selects sample bridges, applies Korean and Japanese quantity surveying methods to them, and then compare the resource quantities for bridge construction. Korean quantity surveying method is based on types of steel, types of bridge and the weight of the steel. The resource quantity per unit is given as a criterion for each type of steel bridge. As a result, total cost of a bridge is estimated by the total weight of a steel bridge multiplied by its given resource per unit. Japanese quantity surveying method is based on the elements of a bridge. This approach reflects how complex to construct, how to weld the elements, how many elements the bridge has, etc. As a result, even same type of bridges may have different costs. This research founds, so as to reflect the characteristics of a bridge in quantity surveying, the Japanese approach can be an alternative.
A Feasibility Study on the Introduction of Numeric Pre-Assembly Technique using 3D Measurement Methods into Steel Bridge Fabrication
Lee, Jung-Hun ; Lee, Cheol-Kyu ; Kim, Kyong-Ju ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 929~937
As an alternative for pre-assembly of steel bridges, the numeric pre-assembly technique is being recognized to overcome the various demerits of the conventional shop assembling process. This method performs virtual pre-assembly simulations using the three-dimensional measurement data in a computer. The precision of the three-dimensional measurement data has a great influence on the reliability of pre-assembly. For the utilization of the virtual pre-assembly simulations in fabricating the steel box girder bridge, this study investigates the existing three-dimensional measurement methods that can be used in numeric preassembly technique and implements a measurement procedure for a steel box girder bridge. In addition, to verify its feasibility on the precision of the three-dimensional measurement data, an experimental three-dimensional measurement was performed by digital surveying equipment. The result shows that the numeric pre-assembly technique can have the precision more than equivalency compared with conventional one.
Optimal Design of Section Size in Land Readjustment Work Using Network Flow Model and Geographic Information System
Kang, Min-Goo ; Park, Seung-Woo ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 939~945
The economic design and construction in land readjustment work depend on the size and the ground elevation of the constructed section. As a results, the designer should consider the cut-fill balance with minimizing the amount and the transportation distance of earthwork. The objective of this study is to develop a combinatorial optimization model using the network flow model and geographic information system (GIS) for the design of section size which minimizes the volume of earth moving. The applicability of the developed optimization model is demonstrated on three constructed districts. The resulting optimal sections are compared with the constructed section through the amount of earthwork and the number of section. As the minimum sizes of the sections are restricted to closely that of constructed sections, the volumes of earthwork moving of optimal sections are less by
than that of the constructed sections. Also, the sizes of the sections to minimizes the amount of earthwork are irregular at the same district and it shows that the results of the model reflect the topological characteristics of the tested districts.
A Study on the Parameters Effecting on the Derailment Factor of Running Train on the Curved Track
Song, Bong-Hwan ; Yang, Shin-Chu ; Kang, Yun-Suk ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 947~954
In this paper, Analysis of parameters effecting on the derailment factor was conducted in odor to deduce technical requisites have to be reflected in design of Track and rolling-stocks because it is important to grasp the risk of derailment quantitatively. And then go far toward becoming practical study with that select two section of sharp curved track of actual train in service, incheon Metro Line 1 and make field research in condition of vehicles and track and analysis. As a result of parameter study, the following conclusions were obtained. The radius of curve and Cant is in inverse proportion to the derailment factor, but as train operation velocity, standard deviation of alignment irregularity and the ratio lateral force: wheel load of the inside track increase, the derailment factor rise. In the investigation for the derailment safety of incheon Metro Line 1, the derailment factor was below 0.43 in both section R=200 and R=300, so that it proved safe compare with allowance limits 0.8, but it appeared that risk of the derailment in second transition curve is the highest among the entire curve.
Experimental Study on the Fluctuation of Lateral Ballast Resistance before and after Ballast Work
Lim, Nam-Hyoung ; Hwang, Sung-Ho ; Lee, Jee-Ha ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 955~961
The lateral ballast resistance is one of the main factors that could cause the lateral buckling of track. The ballast maintenance work or sleeper renewal disturbs the gravel arrangement, reduces the lateral ballast resistance, and eventually reduces the lateral buckling strength of track. According as the cumulative passing tonnage of train increases, both the lateral ballast resistance and the lateral buckling strength of track increase slowly. In this paper, the lateral ballast resistance was measured in neighborhood of Okchon in KyoungBu-Line, to be compared before and after the ballast class-2 work. We also investigated the recovery rate of the lateral ballast resistance which is influenced by cumulative passing tonnage of train.
A Study on the Optimum Band Selection for Supervised Classification Using Mixed-Pixels and Canonical Correlation Analysis
Chang, Hoon ; Yoon, Wan-Seok ; Shin, Dong-June ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 963~970
The commonly used methods for the optimum band selection for supervised classification of multispectral data are Divergence, Transformed divergence (TD) and Jeffreys-Matusita distance(JM distance). But those methods have several problems and are ineffective. This study introduces cost-effective algorithm for feature selection. With 'bands variables set' that includes the pixel values and 'classes variables set' that includes the membership of each class in the pixel, the canonical correlation analysis is made use of feature selection. Using the canonical cross-loadings we can orderly identify the bands that largely influence the remotely sensed data. to verify the suitability of the new algorithm, the classifications using the each best band combination through TD, JM distance and new method were performed and the accuracy assessment was performed. As a result of classification accuracy assessment, overall accuracy and k^ for the new method were higher than TD's and had competitive results to JM distance method.
RPC Adjustments for Improving Geopositioning with IKONOS GEO Imagery
Lee, Hyo-Sung ; Ahn, Ki-Won ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 971~977
This paper introduces adjustment methods of the vendor-provided RPC (Rational Polynomial Coefficient) data of IKONOS GEO-level stereo images. In this study, a first-order polynomial adjustment model and block adjustment models with two and six parameters were implemented independently. Both polynomial and block adjustment utilized ground control points. As results, the maximum error of 3D ground coordinates by the adjusted RPC model did not exceed 3m. As demonstrated in this paper, block adjustment with six parameters provided most accurate result.
Bias Compensation of IKONOS Geo Imagery Using Minimum Ground Control Points
Yoo, Hwan-Hee ; Kim, Seong-Sam ; Kim, Won-Man ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 979~984
This paper analyzes errors in three dimensional positioning of IKONOS Geo imagery using compensated RPC (Rational Polynomial Coefficients) which are corrected by GCPs(Ground Control Points) generated from GPS surveying or selected from digital maps of the scale of 1/1,000 and 1/5,000. In order to resolve the disadvantage of needing about 30 or 40 GCPs in three dimensional positioning using conventional RFM(Rational Function Model), we suggest a method that can correct vendor-sup-plied RPC by using only one or two GCPs. This method also improves accuracy of three dimensional positioning and has the merit of cost and time saving. Particularly, the reliable results show that the positioning accuracy is
RMSE(Root Mean Square Error) in the case of using only RPCs compensated by minimal GCPs.
GCP Data Acquisition Using Image Chip Database
Kim, Gi-Hong ; Sohn, Hong-Gyoo ; Lee, Jae-One ; Lee, Joon-Myoung ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 985~990
The geo-referencing of satellite imagery is a key task in remote sensing. GCPs are points the position of which is known both in the image and in the supporting maps. Mapping function make, the determination of map coordinates of all image pixels possible. Generally manual operations are done to identify image points corresponding to the points on a digital topographic map. In order to accurately measure ground coordinates of GCPs, differential global positioning system (DGPS) surveying can be used. To acquire the sufficient number of well distributed GCPs is one of the most time-consuming and cost-consuming tasks. This paper describes the procedure of automatically extracting GCPs using GCP image chip database. GCP image chips and image matching technique are used for automatic extraction of GCPs. We tested our approach with extracted image chips from KOMPSAT, SPOT, IRS, IKONOS satellite images and aerial photos. As a result, we conducted analysis about matching points between the image chips and satellite images which are recorded from different sensors, and assessed the accuracy of geo-referencing.
Generation of 3D Building Models by Predicting Occlusion Points
Cho, Young-Wook ; Han, Dong-Yeob ; Kim, Yong-Il ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 991~998
3D building modelling is a pre-requisite for performing 3D city modelling. Thus, various approaches for 3D building modelling have been proposed. But the complexity and variety of building structures make it difficult to perform automatic 3D building modelling. Hence researches on semi-automatic building modelling, in which human operator inputs a few information about topology elements or primitives, have being carried out. In this study, a new method is proposed for generating 3 dimensional wire-frames of buildings using the lowest level of topology, points, which are input by human operators. Through the procedure, it is possible to make prediction occlusion points and generate the topology automatically of points, lines and surfaces from buildings. In order to adjust the error of initial values which are input manually, the least squares adjustment for model-image fitting is carried out using the edge information of aerial imagery. And also, all surfaces of building are adjusted to planes by the least squares adjustment, which is model fitting procedure. As a result of those procedures, 3D building models are refined similar to real figures of buildings. Existing researches on semi-automatic building modelling have been carried out mainly in Europe. But, because Korean building structure is simpler than that of Europe, it is considered that the above method is effective to 3D modeling of Korean buildings. Thus, from this research, it is expected that rapid and accurate generation of building models are avaliable particularly for Korean buildings.
Development of Data Conversion Program of Digital Map Ver.2.0 for 1/5,000 scale Topographic Mapping
Hwang, Chang-Sup ; Lee, Jae-Kee ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 999~1007
Since National Geographic Information System was constructed, topographic maps have been made with computer aided editing of digital map, instead of etching map-size negative film. Recently, because computer aided editing have been mainly relied on manual compilation, lots of time and cost are needed to make a topographic map. Therefore in this study we try to make a topographic map automatically from a digital map Ver.2.0. To achieve this purpose, based on the previous studies which focused on analyzing correlation between the digital map and the 1/5,000 scale topographic map and developing basic modules for topographic mapping program, we try to implement more automatized modules which are satisfied with the 1/5,000 scale topographic map series specification. Each module is applied to 1/5,000 scale digital maps Ver.2.0 and the results are analyzed with the same area of topographic map which was published by the National Geographic Information Institute.
Spatiotemporal Analysis of Air Quality using GIS
Choi, Byoung-Gil ; Lee, Hee-Kwan ; Ra, Young-Woo ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 1009~1015
In this study, it is aimed at spatiotemporal analyzing ambient air quality data using GIS techniques. TMS data are classified in time-serial by means of statistical analysis, and geographical and attribute data are rebuilt into a spatial database for each monitoring station. Air pollution levels in study are analyzed in units of hour, day of the week, month, and season through the application of interpolation method in GIS analysis. Spatiotemporal air quality map by GIS is facilitated for public use in the analysis compared with the conventional method. Average pollution levels per hour shows similar results in numerical values, however, the spatiotemporal analysis of air pollution by GIS shows quite different results in individual regions. Spatial analysis using GIS can be effectively used to track the movement of pollutants and the main polluted region in hourly base.
Development of Orthometric Height Acheivement's System using Precise Geoid Model in GPS Surveying
Lee, Suk-Bae ; Sim, Jung-Min ; Lee, Dong-Ha ; Lim, Il-Sik ;
Journal of The Korean Society of Civil Engineers, volume 24, issue 6D, 2004, Pages 1017~1022
Nowadays, the application field of GPS has been increased and also, this study is based on application of GPS. The purpose of this study is to achieve the orthometric height at GPS surveying point and it can be using the ellipsoidal heights and geoidal heights if we have reliable precise geoid model, So, KOGD2003 precise geoid model was made in and around Korean peninsula by combination of geometric geoid by Gps/leveling data and KOGD2002 which was gravimetric geoid model by remove and restore technique. Then, what so called GPS-GeoL v.1., orthometric height achievement's program was made on the base of KOGD2003 by the visual C++. For the accuracy evaluation of this system, GPS surveying accomplished through Korean second leveling line in Chollabukdo area. The results shows that mean value of the differences between output of this system and official orthometric height of NGII is 0.0089m and RMS of the differences is 0.0332m. Therefore, we can judge that it is possible enough to use this GPS-GeoL v.1.0 program in construction field.