All Issue

2020 Vol.16, Issue 4 Preview Page

Original Article

December 2020. pp. 638-649
Purpose: The objective of this study is to evaluate the load carrying capacity of a target bridge structure based on the simple slab bridge of concrete over 20 years of public service. Method: By performing static loading test and dynamic loading test, the displacement, strain, impact factor, and natural frequency values were measured and evaluated through analysis method. Result: The main results of this study are as follows. First, the maximum displacement and maximum strain of S1 were assessed at 2.917 mm and 44.720 με( tensile) and -13.760 με(compression), respectively, with S2 maximum displacement and maximum strain being 2.100 mm and 4.870 με(tensile), respectively. Second, the maximum measured impact factor was 0.191 in section S1 A-A, and the maximum measured impact factor was 0.155 in section S2 C-C. Third, the natural frequency was assessed at 6.086 Hz, and the measurement was found to be within the range of 6.152 Hz to 6.738 Hz. Conclusion: The tested bridge may be evaluated to show good behavior and characteristics for the design load.
연구목적: 본 연구에서는 공용년수 20년이 경과된 콘크리트 단순 슬래브교를 대상으로 하여 대상교량 구조물의 내하성능을 평가하는 것을 목적으로 하였다. 연구방법: 정적재하시험 및 동적재해시험을 수행함으로써 변위, 변형율, 충격계수, 고유진동수 값을 실측하였으며, 해석방법을 통해 평가하였다. 연구결과: 본 연구를 통해 나타난 주요 결과는 다음과 같다. 첫째, S1 최대 변위 및 최대 변형률은 각각 2.917 mm, 44.720 με(인장), -13.760 με(압축)로 평가되었으며, S2 최대 변위 및 최대 변형률은 각각 2.100 mm, 4.870 με(인장)로 나타났다. 둘째, 최대 실측충격계수는 S1 A-A단면에서 0.242로 나타났으며, 최대 실측충격계수는 S2 C-C단면에서 0.198로 나타났다. 셋째, 고유진동수를 해석결과, 6.086Hz로 평가되었고, 측정결과 6.152Hz∼6.738Hz의 범위로 나타났다. 결론: 시험대상 교량은 설계하중에 대하여 양호한 거동 및 특성을 보이는 것으로 평가할 수 있다.
  1. Hwang, J.H., An, S.S., Kim, J.H. (2011). "A feasibility study of loading test for safety assessment : Concrete bridges." Journal of The Korea Institute for Structural Maintenance and Inspection, Vol. 15, No. 6, pp. 147-155. 10.11112/jksmi.2011.15.6.147
  2. Jung, H.P. (2019). A Study on the Bridge Heavy Automobile Passing Load Based on Live Load and Load Test Data. Master's Thesis, Graduate School of University of Seoul.
  3. Korea Infrastructure Safety & Technology Corporation (2010). FMS Facility Information Management System.
  4. Min, J.K., Kim, Y.I. (2004). "Behavior properties of bridge by non destructive and loading test." Journal of the Korean Society of Agricultural Engineers, Vol. 1, pp. 61-71. 10.5389/KSAE.2004.46.1.061
  5. Ministry of Land, Infrastructure and Transport (2010). Detailed Guideline for Safety Inspection and Precision Safety Diagnosis (Bridge).
  6. Sung, I. (2017). "An application of dynamic loading test of precast module concrete decks." Journal of Korea Society of Disaster Information, Vol. 13, No. 1, pp. 73-80. 10.15683/kosdi.2017.03.31.73
  • Publisher :The Korean Society of Disaster Information
  • Publisher(Ko) :한국재난정보학회
  • Journal Title :Journal of the Society of Disaster Information
  • Journal Title(Ko) :한국재난정보학회논문집
  • Volume : 16
  • No :4
  • Pages :638-649