• Title/Summary/Keyword: 교량건설

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국내 해상교량 주요 제원 분석

  • Song, Jae-Uk;Lee, Yun-Seok;Jeong, Min;Jo, Ik-Sun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2007.12a
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    • pp.266-268
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    • 2007
  • 최근 국내의 각 주요 항만 내 ${\cdot}$ 외에 대형 해상교량이 건설되었거나 건설 진행 중이다. 해상교량 중 주로 선박통항이 빈번한 항로부근에 설치되어 선박통항안전성에 밀접한 관련이 있는 교량이나, 항내의 접안시설과 항만 기반 시설에 근접하여 설치된 교량은 선박의 통항 안전성에 직접적인 영향을 미치며, 더 나아가 항만 운영 효율성에 영향을 줄 수 있으므로, 이러한 해상교량에 대한 현황 및 주요 제원을 조사 분석하고자 한다. 특히 선박 통항안전성에 직접적인 영향을 주는 요소인 주경간장, 형하고 등의 주요제원을 결정하게 되는 요인에 대하여 분석한다.

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Correlation Analysis between Safety Evaluation Indices and Load Carrying Capacity in Bridges (교량 안전성 평가 지표와 내하율의 상관관계 분석)

  • Kyu San Jung;Dong Woo Seo;Jae Hwan Kim;Kun Soo Kim;Ki Tae Park;Woo Jong Kim
    • Journal of Korean Society of Disaster and Security
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    • v.16 no.3
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    • pp.27-34
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    • 2023
  • In Korea, safety inspections of bridges are conducted periodically in accordance with law. Bridges are classified according to type, length, etdc., and the content and frequency of safety inspections are different. Bridges safety evaluation is performed on relatively large bridges, and safety evaluation of small bridges, which account for the majority of all bridges, is not mandatory. Therefore, in this study, in order to confirm the safety of small-scale bridges, a correlation analysis study was conducted with the common load carrying rate for each safety evaluation indicator. For this purpose, inspection reports of bridges from local goverments were collected, and the values for each bridges for about 50 indicators in the report were converted into data. By performing cleaning on the collected data and analyzing the correlation with the common load carrying rate, the top indicators related to safety for each bridges type were derived.

Bridge Scour Prioritization and Management System (I) - System Development - (교량세굴 위험도 결정 및 유지관리 시스템 개발(I) - 시스템 개발 -)

  • Kwak, Kiseok;Park, Jae Hyun;Chung, Moon Kyung;Woo, Hyo Seop
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.26 no.2B
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    • pp.187-195
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    • 2006
  • A bridge scour management system is developed to evaluate the vulnerability of bridge piers to scour and to help establish effective disaster measures, taking into account the locality and scour characteristics in Korea. This system is programmed using the techniques of the geographical information system(GIS) for the storage, retrieval, and display of information regarding to bridge scour. The system functions are basically divided into two parts; prioritization and maintenance. Bridges are initially screened and prioritized for bridge scour inspection and evaluation using the basic information which is obtained from the office review. The bridge scour evaluation including site investigation is performed and the vulnerability of bridge piers is categorized into six groups taking into account the local scour depth, foundation bearing capacity, foundation type, foundation depth, and present scour condition. The system tabulates and plots all the data and the results.

A Comparative Study on Seismic Fragility of RC Slab Bridge Considering Aging Effect of Components (RC 슬래브 교량의 요소별 노후도를 고려한 지진취약도 비교분석)

  • An, Hyojoon;Park, Ki-Tae;Jung, Kyu-San;Kim, Yu-Hee;Lee, Jong-Han
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.25 no.6
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    • pp.177-184
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    • 2021
  • In recent years, large-scale earthquake activity has occurred in Korea, and thus public interest in earthquakes is increasing. Accordingly, the importance of seismic performance management of structures is emerging. In particular, the collapse of a bridge, one of main road facilities, directly leads to many casualties. Therefore, engineers need to evaluate the seismic fragility of the bridge and prepare for the earthquake event. The service life of these bridges has been over 30 years, which requires a study on the aging effect on bridges. In this study, seismic analysis of the target RC slab bridge was performed considering the aging effects of each component of the bridge. Components of the bridge included pier and bearing, which dominate the seismic response of the bridge. The seismic performance of the bridge was evaluated using nonlinear static and dynamic analyses. In addition, the limit state and dynamic response of each component were used to evaluate the seismic fragility according to the aging of each component.

Bridge Scour Prioritization and Management System (II) - System Verification - (교량세굴 위험도 결정 및 유지관리 시스템 개발(II) - 시스템 검증 -)

  • Kwak, Kiseok;Park, Jae Hyun;Yoon, Hyun Suk;Woo, Hyo Seop
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.26 no.2B
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    • pp.197-208
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    • 2006
  • Case studies for real bridge sites are performed to verify the applicability of the Bridge Scour Management System in the field. The case studies for 20 bridges in Gangneung District of National Road Management consist of site investigations including the boring tests, bridge scour analyses for the design floods, bearing capacity evaluation of the bridge foundation before and after scour, and comprehensive evaluation of the bridge scour maintenance. The bridge scour management system is verified as an useful tool which can evaluate bridge scour vulnerability quantitatively, and is also proposed as a reasonable system which can help establish effective measures and secure the safety of bridges during floods.

Load Rating of Bridges and Load Test of Agricultural Slab Bridge (교량의 내하력 평가 및 농로교의 하중시험)

  • Yang, Seung-Ie;Kim, Han-Joong;Kim, Jin-Sung
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.7 no.1
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    • pp.239-249
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    • 2003
  • The bridges, which were built between 20 and 30 years ago in rural area, have to support unexpected overload caused by excessive amount of transportation. For these rural bridges, repairs and replacements are needed. To avoid the high cost of rehabilitation, the bridge rating must correctly report the present load-carrying capacity. Rating engineers use Allowable Stress Design (ASD), Load Factor Design (LFD), and Load Resistance Factor Design (LRFD) to evaluate the bridge load carrying capacity. In this paper, the load rating methods are introduced, and it is illustrated how to use the load test data from literature survey. Load test is conducted to the bridge that was built 30 years ago in rural area. From load test results, new maintenance strategy is suggested instead of the bridge replacement.

Evaluation on the Structural Performance and Economics of Ultra-high Performance Concrete Precast Bridges Considering the Construction Environment in North Korea (북한 건설환경을 고려한 초고성능 콘크리트 프리캐스트 교량의 구조성능 및 경제성 평가)

  • Kim, Kyoung-Chul;Koh, Kyung-Taek;Son, Min-Su;Ryu, Gum-Sung;Kang, Jae-Yoon
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.9 no.2
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    • pp.208-215
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    • 2021
  • In this study, a customiz ed bridge system was developed for North Korea application. For the application of North Korea, the customized bridge system design, fabrication, and construction performance evaluation were performed using ultra-high performance concrete a compressive strength 120MPa or more and a direct tensile strength 7MPa or more. The comparison of the North Korean truck luggage load(30, 40, 55) and the Korean standard KL-510 load showed that cross-section increased as the load increased. Furthermore, a bridge with a span length of 30m was fabricated with ultra-high performance concrete for the construction performance evaluation. The evaluation of the load condition analysis was performed by a flexural test. The results showed that a bridge with a span length of 30m secured about 167% of sectional performance under initial cracking load conditions and about 134% of load bearing capacity under ultimate load conditions. As a result of economic analysis, the customized bridge system using ultra-high-performance concrete was less than about 11% of the upper construction cost compared to the steel composite girder bridge. Therefore, these results suggest that the price competitiveness can be secured when applying the ultra-high-performance concrete long-span bridge developed through this study.

Integration of Extended IFC-BIM and Ontology for Information Management of Bridge Inspection (확장 IFC-BIM 기반 정보모델과 온톨로지를 활용한 교량 점검데이터 관리방법)

  • Erdene, Khuvilai;Kwon, Tae Ho;Lee, Sang-Ho
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.33 no.6
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    • pp.411-417
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    • 2020
  • To utilize building information modeling (BIM) technology at the bridge maintenance stage, it is necessary to integrate large quantities of bridge inspection and model data for object-oriented information management. This research aims to establish the benefits of utilizing the extended industry foundation class (IFC)-BIM and ontology for bridge inspection information management. The IFC entities were extended to represent the bridge objects, and a method of generating the extended IFC-based information model was proposed. The bridge inspection ontology was also developed by extraction and classification of inspection concepts from the AASHTO standard. The classified concepts and their relationships were mapped to the ontology based on the semantic triples approach. Finally, the extended IFC-based BIM model was integrated with the ontology for bridge inspection data management. The effectiveness of the proposed framework for bridge inspection information management by integration of the extended IFC-BIM and ontology was tested and verified by extracting bridge inspection data via the SPARQL query.

Infrastructure Asset Management Methodology Application to Bridge Management (사회기반시설물 자산관리의 교량구조물 적용방안에 관한 연구)

  • Park, Kyung-Hoon;Sun, Jong-Wan;Park, Cheol-Woo;Lee, Min-Jae
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.6D
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    • pp.727-736
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    • 2009
  • Many of the researchers have tried to enhance the satisfaction of both users and owners of social infrastructures by applying the asset management methodology. This study is to develop more efficient asset management framework for bridge management. Based on various literature review, an asset management procedure for bridge management was suggested, and appropriate practices at each step were given. The suggested procedures include the determination of operation and maintenance strategy, level of service, performance measure, valuation of assets, and decision-makings. In addition, this study suggests an applicable decision-making process for the resource distribution based on the management strategy.

Maintenance Planning for Deteriorating Bridge using Preference-based Optimization Method (선호도기반 최적화방법을 이용한 교량의 유지보수계획)

  • Lee, Sun-Young;Koh, Hyun-Moo;Park, Wonsuk;Kim, Hyun-Joong
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.28 no.2A
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    • pp.223-231
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    • 2008
  • This research presents a new maintenance planning method for deteriorating bridges considering simultaneously the minimization of the maintenance cost and maximization of the bridge performance. Optimal maintenance planning is formulated as a multi-objective optimization problem that treats the maintenance cost as well as the bridge performance such as the condition grade of the bridge deck, girder and pier. To effectively address the multi-objective optimization problem and decision making process for the obtained solution set, we apply a genetic algorithm as a numerical searching technique and adopt a preference-based optimization method. A numerical example for a typical 5-span prestressed concrete girder bridge shows that the maintenance cost and the performance of the bridge can be balanced reasonably without severe trade-offs between each objectives.