초고강도 원심성형 각형보를 상부구조로 하는 라멘교의 내하성능 평가
Evaluation of the Load Carrying Capacity on a Rahmen Bridge with Ultra-high Strength Centrifugally Formed Square Beams as the Superstructure
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초록
고가의 혼화재 투입 없이 원심성형 공정 활용으로 콘크리트의 수밀성 증대를 통한 콘크리트 압축강도가 100MPa급인 초고강도 프리스트레스 각형보를 개발하였다. 피암터널 상부구조로 개발된 원심성형 각형보를 지역 소하천의 라멘교에 시공하였으며, 본 연구에서는 정적재하시험을통하여 계측한 결과와 대상 구조물의 수치해석 결과를 바탕으로 비교, 분석하여 원심성형 각형보 라멘교의 공용내하력과 안전성을 평가하였다. 본교량의 정·동적 재하시험과 수치해석 결과가 유사하게 나타났으며 원심성형 각형보의 거동을 잘 모사하는 것으로 확인되었다. 합성 라멘교를 구성하는모든 원심성형 각형보는 설계활하중 하에서 충분한 내하력을 확보하는 것으로 평가되었고 안전성을 확보하여 구조적인 신뢰성을 입증하였다
Abstract
An ultra-high strength prestressed prismatic beam of 100 MPa in compressive strength was developed by increasing the water-tightness of concrete by utilizing centrifugal molding processes without adding expensive admixtures. The centrifugal prismatic PSC beam developed as the superstructure of the avalanche tunnel was constructed on a rahmen bridge in a small local river. In this study, the centrifugal prismatic beam was compared and analyzed based on the results of measurements made through static load tests and the results of numerical analysis of the target structure. The common load-carrying capacity and safety of the rahmen bridge were evaluated. The static·dynamic load tests and finite element analysis results of this bridge were similar, and it was confirmed that the behavior of the centrifugal prismatic beam was well simulated. All centrifugally formed square beams that make up the composite rahmen bridge were evaluated to secure sufficient load carrying capacity under the design live load, and structural reliability was proven by ensuring safety.
참고문헌 (14)
- Shin, J. I., "An Improvement for Evaluating Load Carrying Capacity by Passing Vehicles of PSC-BOX Bridge", Journal of the Korea Institute for Structural Maintenance and Inspection, 11(4), pp.147~151 (2007)
- Hwang, J. H., "A Feasibility Study of Loading Test for Safety Assessment : Concrete Bridges", Journal of the Korea Institute for Structural Maintenance and Inspection, 15(6), pp.147~155 (2011)
- Kim, S.W., "Lateral Load Distribution Estimation of a PSC Girder Bridge from Dynamic Load Test", Journal of the Korea Institute for Structural Maintenance and Inspection, 21(3), pp.60~68 (2017)
- Kim, S. K., "Evaluation of the Load Carrying Capacity of Existing Bridges with Long Span Hollow Web Prestressed Concrete Girder by Static Load Test", Journal of the Korea Institute for Structural Maintenance and Inspection, 22(3), pp.97~102 (2018)
- Yoon, S. G., "Evaluation of Bridge Load Carrying Capacity of PSC Girder Bridge using Pesudo-Static Load Test", Journal of the Korea Institute for Structural Maintenance and Inspection, 23(4), pp.53~60 (2019)
- Kim, K. H., "Analysis on Application of Limit State Design Method for Bridge Evaluation Considering PSC Beam Bridge Experiment Results", Journal of the Korea Institute for Structural Maintenance and Inspection, 25(6), pp.235~244 (2021)
- Lee, D. S., "The Experimental Study of the Ultimate Behavior of an Avalanche Tunnel Corner Rigid Joint Composited with a Centrifugal Formed Beam", Journal of the Korea Institute for Structural Maintenance and Inspection, 26(6), pp.128~138 (2022)
- Kim, J. H., "The Experimental Study of Full-scale Centrifugal Formed High Strength Concrete Prismatic Beam(CFPB)Composited with Deck Slab", Journal of the Korea Institute for Structural Maintenance and Inspection, 27(1), pp.19~29 (2023)
- Lee, D. S., "The Development of a 100 MPa Class Ultra-high Strength Centrifugal Molded Square Beam Design and Manufacturing Technology", Journal of the Korea Institute for Structural Maintenance and Inspection, 27(4), pp.1~10 (2023)
- Korean Concrete Institute, "Guidelines and Examples for Safety Assessment of Operating Design Specifications for Structural Concrete Bridges", ~ (2010)
- Korea Road & Transportation Association(KRTA), "Road bridge design specifications", ~ (2016)
- Korean Infrastructure Safety and Technology Corporation, "The Guidelines for Safety Inspections and Full Safety Examinations", ~ (2017)
- Ministry of Land, Infrastructure and Transport, "Guidelines for safety and maintenance of facilities, etc", ~ (2022)
- Midas IT, "ANALYSIS & ALGORITHM", ~ (2004)