• Title/Summary/Keyword: 고가낙석

Search Result 2, Processing Time 0.017 seconds

Demolition and Maintenance/Repair Cost Estimation of Road Drop Obstacle for Safety Risk Removal of Anti-tank Defense Facility (대전차 방어시설의 안전위해요소 제거를 위한 낙석 장애물 철거 및 유지보수 비용 산정 연구)

  • Yoo, Yang-Soo;Park, Young Jun;Eun, Hee-Chang;Baek, Jang-Woon
    • Journal of the Korea Institute of Building Construction
    • /
    • v.20 no.4
    • /
    • pp.375-382
    • /
    • 2020
  • Rock drop obstacles on major roads in the border area in South Korea has been installed and operated to prevent and block the movement of enemy units. However, the increase in traffic volume due to the development of the border region causes many problems such as road traffic congestion due to rock drop, traffic safety, and impaired urban aesthetics. Therefore, this study aimed to provide guidelines for demolition and replacement facility installation for rock drop obstacles, which are differently applied to each unit, and to suggest the direction of the Ministry of National Defense's policy regarding maintenance cost for necessary rock drop obstacles required for operation. In this study, as part of a guideline study on the removal of rock drop obstacles and the installation of alternative facilities, a standard unit price was suggested for essential rock drop obstacles, so as to be used as judgment data when deciding whether to remove rock drop obstacles.

A Applicability Study on the Asphalt Concrete Pavement Condition Index in Narrow Regional Roads using Road Crack (도로 균열율을 사용한 소규모 지역 아스팔트 콘크리트 포장상태평가지수의 적정성 검토)

  • Kim, Sung-Ho;Kim, Kyungnam;Kim, Nakseok
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.38 no.3
    • /
    • pp.467-475
    • /
    • 2018
  • The purpose of this study is to propose the evaluation criteria of asphalt pavement condition in narrow regional road considering the traffic environment in order to reduce road budget of local governments. In general, narrow regional roads are considered relatively less important because they have low travel speed and low traffic volume of heavy-vehicle. Generally, automatic surveying equipment is used for investigations of pavement condition, but the operating costs are not efficient for the narrow regional roads because the cost is too high. This study presents the pavement condition evaluation index suitable for narrow regional roads. In this study, the pavement condition evaluation index is presented considering the traffic environment of narrow regional roads. The pavement condition were classified into three classes based on the crack measured by visual inspection, and the validity of the pavement condition evaluation index presented through the expert's questionnaire survey was examined. Pavement condition for the narrow regional roads was classified into three grades based on the index values calculated by visual inspection. Expert's surveys were conducted to evaluate the validity of the proposed pavement condition evaluation. The proposed evaluation index shows a high correlation with questionnaire survey result ($R^2=0.88$). The proposed evaluation index which is obtained through visual crack inspection under limited conditions can be applied to narrow regional roads. In addition, it is expected that it will be effective not only for road management but also for road management budget by more economical evaluation method of pavement condition.