Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Limitation of Measurement System in Application of Angular Distortion Criterion to Structure Near Road Embankment

도로 성토 시 인근 구조물에 각변위기준 적용에 있어 계측시스템의 한계성

  • Received : 2013.10.15
  • Accepted : 2013.12.10
  • Published : 2014.01.01
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Abstract

Angular distortion due to differential settlement is one of the critical factors which influences on the stability and serviceability of a structure. The angular distortion criterion proposed by Bjerrum is generally used in practice. However, the measurement system used in field especially a road embankment site did not properly represent the angular distortion of a structure. The problem was related to the shortage and not proper installation of measurement gauges, and the incorrect understanding of the basic concept of angular distortion in interpretation of measurement data. These things were reveled by analyzing the measured data in the road embankment site. An improved measurement system has been suggested as a so-called "relative displacement measurement system" between columns with automatic measurement.

부등침하로 인한 각변위는 구조물의 안정성과 사용성에 영향을 미치는 중요한 요소 중 하나이다. 실무에서는 현재 Bjerrum이 제안한 각변위기준이 널리 사용되고 있다. 하지만 현재 도로 성토 현장에서 적용하고 있는 계측시스템은 구조물의 각변위를 적합하게 나타내지 못하고 있다. 이와 같은 문제는 충분하지 못한 계측 수, 부정확한 계측기 설치, 계측된 자료의 해석에 있어 각변위 기본개념의 잘못된 이해 등과 관련이 된다. 본 연구에서 도로 성토 현장에서 얻어진 데이터의 분석을 통해 이와 같은 문제점을 규명하였다. 도로 성토 현장에서 적용할 수 있는 자동화된 상대변위 계측시스템이라는 개선된 계측시스템을 제안하였다.

Keywords

References

  1. 한국지반공학회 (2009), 구조물기초설계기준해설, 국토교통부, 597 p.
  2. Bjerrum, L. (1963), Allowable settlement of structures, Proc., 3rd European Conf. on Soil Mechanics and Foundation Engineering, Vol. 2, Weisbaden, Germany, pp. 135-137.
  3. Day, R. W. (1990), Differential movement of slab-on-grade structures, Journal of Performance of Constructed Facilities, Vol. 4, No. 4, pp. 236-241. https://doi.org/10.1061/(ASCE)0887-3828(1990)4:4(236)
  4. Gray, R. M. (2004), Using slab-on-ground elevation measurements in residential foundation engineering performance evaluations, technical presentation at a meeting of the Houston based foundation performance association, Technical Presentation Paper, Foundation Performance Association, Houston, pp. 1-27.
  5. Kim, T. H., Kim, Y. T., You, S. H., Park, T. Y. and Choi, Y. C. (2012), Problem of angular distortion criterion in application to determine the stability and serviceability of structure, Korean Geo-Environmental Society, pp. 161-164 (in Korean).
  6. Kim, T. H., Kim, Y. T., You, S. H., Kim, D. I., Kim, K. H. and Choi, Y. C. (2013), Assesment of angular distortion criterion using field measurement data, Korean Geotechnical Society, pp. 770-784 (in Korean).
  7. Marsh, E. T. and Thoney, S. A. (1999), Damage and distortion criteria for residual slab-on-grade structures, Journal of Performance of Constructed Facilities, Vol. 13, No. 3, pp. 121-127 https://doi.org/10.1061/(ASCE)0887-3828(1999)13:3(121)
  8. Meyerhof, G. G. (1979), Soil structures interaction and foundation. General Report, Proceedings of 6th Panam. Conf. S.M.F.E. Lima, Vol. 1, pp. 109-140.
  9. Polshin, D. E. and Tokar, R. A. (1957), Maximum allowable non-uniform settlement of structures, Proceedings of Fourth International Conference on Soil Mechanics and Foundation Engineering, London, Vol. 1, pp. 402-406.
  10. Skempton, A. W. and Macdonald, D. H. (1955), A survey of comparisons between calculated and observed settlements of structures on clay, Proc. Conf. Correlation of Calculated and Observed Stresses and Deformation in Structures, London, pp. 318-337.
  11. Skempton, A. W. and MacDonald, D. H. (1956), The allowable settlement of building, Proceedings of the Institute of Civil Engineers, Vol. 5, No. 3, pp. 727-768.
  12. Sowers, G. F. (1962), Shallow foundation, Chapter 6, McGraw- Hill Book Co., New York, pp. 525-641.
  13. U. S. Army (1990), Engineering and design-settlement analysis, Manual EM 1110-1-1904, Department of the Army, Chapter 2, Limitation Settlement, Washington D. C., pp. 2.1-2.6.