• Title/Summary/Keyword: Road project

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Impacts of Rural Road Project on the Social and Economic Activities of Community People (농어촌도로사업이 지역사회 주민의 사회.경제 활동에 미치는 영향)

  • Hong, Chan-Sun;Im, Sang-Bong;Huh, Yoo-Man
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2003.10a
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    • pp.95-98
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    • 2003
  • The objectives of the study are to analyze the impacts of rural road project on the social and economic activities of community people, offer basic data to perform evaluation of the project, and suggest future directions of the project. Research methodology adopted is a questionnaire method. There were interviewed 281 adult residents selected from 34 villages in Yeongdong-gun(mountainous), Miryang-si(middle), and Gochang-gun(plain). Results of the study are as follows: 1) Increase of income and land prices in mountainous and middle regions by the rural road project is higher than in plain; 2) Most inconvenient road expressed by the interviewee is the one linking farm and residence and 3) The problems of rural roads derived are narrowness, unpavement and partial pavement, unreliable maintenance, and long construction time. In order to meet the community needs on rural roads, it may be necessary that community people participate in the process of the project. And it is desirable to put priority on expanding and paving existing roads rather than constructing new one.

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Evaluation of Consciousness on Public Involvement of Road Project (도로사업의 PI에 관한 주민의식 평가)

  • Kim, Hyeon;Gwon, Yeong-In;Jeong, Byeong-Du;Lee, Seon-Ha
    • Journal of Korean Society of Transportation
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    • v.24 no.3 s.89
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    • pp.73-83
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    • 2006
  • In this study, our purpose is to identify a causal relationship in consciousness relating to the public involvement for current road improvement projects in Seoul Some of hypotheses about causal relationships among the psychological factors are assumed to develop a structural equation model. This model includes latent variables determining the consciousness relating to public involvement procedure, such as distrust feeling for administration (public sector) the knowledge and satisfaction about the road project, and the comprehensive faculty on the public involvement. The estimated model indicates that these assumed hypotheses are proved and that the administrative distrust strongly determines the consciousness as well as understanding of the road project and the knowledge of PI procedure.

A Study on the Development of Work-Crew based Daily-Productivity for Representative B.O.Q Item in Road Project (도로공사 대표공종의 생산성 정보 개발에 대한 연구)

  • Seo, Ji-Hyeong;Park, Hyung-Keun
    • Korean Journal of Construction Engineering and Management
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    • v.12 no.6
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    • pp.42-53
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    • 2011
  • This study is to present a method of compiling consistently accurate construction cost estimates in minimum of time. There are two kind of applications for estimating system based on quantity-per-unit and the daily work-crew. The former system is still applied 45% as a estimating method to construction job site by the second half of 2010. However, it is necessary for quantity-per-unit to complement the defect of standard integrating specification and improve the integrating method to the various construction conditions. The later system is intended to represent a standard or basic core which can be adopted in many type of construction estimating used across the wide variety of construction in advanced countries. In this study daily work-crew based on productivity is applied to the representative B.O.Q Item in road project. These results are compared to productivity of Japan and U.S.A estimated under the similar circumstances.

An Analysis of Factors Affecting Environmental Load in Earthwork Type of Road Project (도로건설공사 토공작업부에 대한 환경부하 영향인자 분석)

  • Park, Jin-Young;Im, Je-Gyu;Kim, Byung-Soo
    • Korean Journal of Construction Engineering and Management
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    • v.19 no.4
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    • pp.52-60
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    • 2018
  • In the construction industry, attempts to evaluate the environmental impact of products through life cycle assessment (LCA) approach has been on the rise. However, the domestic construction industry needs to make rapid decisions due to limited budget and schedule, so it is difficult to carry out a review of the environmental load on all resources. The decision-making process requires information on the major influence factors that should be focused on to reduce environmental load. And this information should be quantified so that it can be linked to environmental impact assessment. In this study, the LCA results of road construction cases were analyzed to provide such information. As a result, diesel, ready-mixed concrete, urethane-based paint, aggregate, and asphalt concrete were found to be the main factors that generated 93.17% of the environmental load in the earthwork type of road project. The total environmental cost caused by these affecting factors when constructing 1 km of earthwork type of road project is 242 million won. The analysis also shows that a 10% reduction in the amount of ready-mixed and asphalt concretes can reduce carbon emissions by 5.02% and 2.28% while reducing environmental costs by 11 million won per kilometer. In order to reduce carbon emissions of the earthwork type of road project, it is necessary to actively develop and introduce new methods and eco-friendly materials to reduce the overall use of ready-mixed concrete and asphalt concrete.

A Strategy for Developing New Road Projects (경관도로 등 신개념의 도로사업 개발에 관한 연구)

  • Kim, Eung-Cheol
    • International Journal of Highway Engineering
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    • v.9 no.2 s.32
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    • pp.115-127
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    • 2007
  • Developed countries, especially in road construction and management fields, introduce new road porjects such as National Scenic Byways Program(NSBP program) in USA and the Eco-road project in Japan. This study develops a conceptual model for deploying new road projects in Korea. The four step approach is suggested to create new road projects, including foundation of an act based on the existing Road Act, creation of new road project ideas, development of evaluation process and guidelines, and enhancement of an administrative scheme. To create new road projects, three different ways are devised; (1) designation of national roads having uniqueness in overall spectrum, (2) designation of roads having intrinsic values in a different aspect, (3) designation of single structures of engineering outcomes such as bridges, tunnels, new design techniques, considerable Value Engineering output, and well analyzed Life Cycle Cost Analysis practices. For the evaluation process, NSBP program of USA and/or Sustainable City Award program of Korea would be recommended. An administrative scheme and integrated funding process for the new road projects are also suggested based on evaluation of tasks of each team or division of Korea Ministry of Construction and Transportation.

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Interoperability Verification using BIM Case Models of Road Project (도로 프로젝트의 BIM 사례모델 구축을 통한 호환성 검증)

  • Moon, Hyoun-Seok;Kim, Chang-Yoon;Cho, Guen-Ha;Moon, Jin-Seok;Ju, Ki-Bum
    • Journal of KIBIM
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    • v.5 no.1
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    • pp.44-53
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    • 2015
  • Recently, BIM has been widely applying in civil engineering projects centering on the private construction industry in order to establish self guidelines for spreading in practice. However, most BIM technologies and software are based on the architectural projects. In these environments, it is not easy to apply the BIM to a infrastructure field. Even BIM standards with IFC (Industry Foundation Classes) are also focusing on architectural projects. Especially, both private and public sectors do not know about how BIM delivery system should be performed, and how such deliverable should be submitted to the government yet. Thus, we need to analyze an application level of BIM S/W (Software) in real projects and verify their interoperability. Besides, since there are not any common standards that can exchange IFC models for civil engineering projects, we have many issues in converting as-built infrastructure models into IFC and delivering their design documents to the government. Accordingly, this study aims to perform a BIM process with commercial software for real road project after a detailed design process is finished and verify interoperability between diverse BIM software for securing BIM data reliability.

A Case Study on Construction of Front-Jacking method in Daejeon E.W. perforate Road Project (대전 동서관통도로 Front-Jacking공법 시공사례)

  • Kim Yong-Il;Hwang Nak-Yeon;Cha Jong-Whi;Jang Sung-Wook;Lee Nai-Yong
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.646-654
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    • 2005
  • The crossing construction under railroad have two methods which are cut and cover and trenchless method. First, cut and cover method is an extremely limited method concerning non-running time. Whereas, trenchless method is free from restriction such as train speed and running time, and has the strong points of safe and rapid construction. Front Jacking method, one of the trenchless methods, is frequently applied recently due to its stability during construction and vantage of assuring schedule reliability. The procedure is that after minimizing interlocking friction with structure and earth pressure due to jacking the small steel tube, pulling the precast box manufactured at the field in the ground using PC strand and hydraulic Jack. This method is able to be applied regardless of section size and length of box and condition of soil. And that is also pro-environmental. This paper presents the case of Daejeon E. W. perforate Road Project applied with the Front Jacking method.

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Application of Soil Stabilization Technique for Shoulder Construction in Sri Lanka (스리랑카 길어깨 적용을 위한 안정처리 재료의 적용성 평가 연구)

  • Park, Ki Soo;Park, Hee Mun
    • International Journal of Highway Engineering
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    • v.20 no.4
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    • pp.21-26
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    • 2018
  • PURPOSES : The objective of this study is to evaluate the application of soil stabilization method for soft shoulder construction in the iRoad Project of Sri Lanka. METHODS : Firstly, the quantitative analysis of soil strength improvement due to soil stabilization was done for soil samples collected from iRoad construction sites. Two types of soils were selected from iRoad Project sites and prepared for soil stabilization testing by the Road Development Authority. Secondly, the appropriate stabilizer was selected at given soil type based on test results. Two different stabilizers, ST-1 and ST-2, produced in Korea were used for estimating soil strength improvements. Finally, the optimum stabilizer content was determined for improving shoulder performance. The uniaxial compressive strength (UCS) test was conducted to evaluate the strength of stabilized soil samples in accordance with ASTM D 1633. The use of bottom ash as a stabilizer produced from power plant in Sri Lanka was also reviewed in this task. RESULTS : It is found from the UCS testing that a 3% use of soil stabilizer can improve the strength up to 2~5 times in stabilized soft shoulder soils with respect to unstabilized soils. It is also observed from UCS testing that the ST-1 shows high strength improvement in 3% of stabilizer content but the strength improvement rate with increase of stabilizer content is relatively low compared with ST-2. The ST-2 shows a low UCS value at 3% of content but the UCS values increase significantly with increase of stabilizer content. When using the ST-2 as stabilizing agent, the 5% is recommended as minimum content based on UCS testing results. Based on the testing results for bottom ash replacement, the stabilized sample with bottom ash shows the low strength value. CONCLUSIONS : This paper is intended to check the feasibility for use the soil stabilization technique for shoulder construction in Sri Lanka. The use of soil stabilizer enables to improve the durability and strength in soft shoulder materials. When applying the bottom ash as a soil stabilizer, various testings should be conducted to satisfy the specification criteria.

RECENT R&D ACTIVITIES ON STRUCTURAL HEALTH MONITORING FOR CIVIL INFRA-STRUCTURES IN KOREA

  • Yun, Chung-Bang
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2003.11a
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    • pp.21-32
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    • 2003
  • Developments and applications of the structural health monitoring (SHM) systems have become active particularity for long-span bridges in Korea. They are composed of sensors, data acquisition system, data transmission system, information processing, damage assessment, and information management. In this paper, current status of research and application activities on SHM systems for civil infra-structures in Korea are briefly introduced by 4 parts: (1) current status of bridge monitoring systems on existing and newly constructed bridges, (2) research and development activities on smart sensors such as optical fiber sensors and piezo-electric sensors, (3) structural damage detection methods using measured data, and (4) a test road project for pavement design verification and enhancement by the Korea Highway Corporation. Finally the R&D activities of a new engineering research center entitled Smart Infra-Structure Technology Center at Korea Advanced Institute of Science and Technology are also briefly described.

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