A Study of Statistic Behavior of Segmental U-shaped Prestressed Concrete Girder Applied with Integrated Tensioning Systems

doi:10.15683/kosdi.2024.6.30.329

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2024 Vol.20, Issue 2 Preview Page Next Page

Original Article

A Study of Statistic Behavior of Segmental U-shaped Prestressed Concrete Girder Applied with Integrated Tensioning Systems 복합긴장방식이 적용된 세그멘탈 U형 거더 정적 거동 연구: 장현옥¹ ㆍ장일영² *
Hyunock Jang¹ , Ilyoung Jang² *; ¹ CEO, J Engineering and Construction Co., Ltd., Suwon, Republic of Korea
² Professor, Department of Civil Engineering, Kumoh National Institute of Technology, Gumi, Republic of Korea

30 June 2024. pp. 329-338

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Abstract

Purpose: This study verified the safety of the improved box-type girder behavior by comparing and evaluating the bending behavior results of a full-scale specimen based on the analytical behavior of the splice element PSC U-shaped girder with integrated tensioning systems. Method: Based on the results of the service and strength limit state design using the bridge design standard(limit state design method), the applied load of a 40m full-scale specimen was calculated and a static loading experiment using the four-point loading method was performed. Result: When the design load, crack load, and ultimate load were applied, the specimen deflection occurred at 97.1%, 98.5%, and 79.0% of the analytical deflection value. When the design load, crack load, and ultimate load were applied, the crack gauge was measured at 0.009~0.035mm, 0.014~0.050mm, and 6.383~5.522mm at each connection. Conclusion: The specimen behaved linear-elastically until the crack load was applied, and after cracks occurred, it showed strain-hardening up to the ultimate load, and it was confirmed that the resistance of bending behavior was clearly displayed against the applied load. The cracks in the dry joints were less than 25% of grade B based on the evaluation of facility condition standard. The final residual deformation after removing the ultimate load was 0.114mm, confirming the stable behavior of the segment connection.

Keywords

Integrated tensioning

Spliced

PSC U-shaped

Full-scale specimen

Dry joint

Residual deformation

연구목적: 본 연구는 긴장방식을 복합적으로 적용한 세그멘탈 PSC U형 거더에 대한 해석적 거동을 기반으로 실대형 실험체의 휨 거동 결과를 평가하여 거동의 안전성을 검증하고자 한다. 연구방법: 도로교설계기준 한계상태설계법의 사용한계 및 극한한계상태 설계 결과를 바탕으로 40m 실대형 실험체의 가력하중을 산정하고 이에 대한 4점재하방식 정적 하중재하 실험을 수행하였다. 연구결과: 설계하중, 균열하중 및 극한하중이 작용할 때 해석적 처짐값 대비 97.1%, 98.5% 그리고 79.0%에 해당하는 실험체 처짐이 발생하였다. 설계하중, 균열하중 및 극한하중이 작용할 때 균열계는 각 연결부에서 0.009~0.035mm, 0.014~0.050mm, 6.383~5.522mm로 계측되었다. 결론: 균열하중 재하시까지 실험체는 탄성적으로 거동하였고 균열발생 후 극한하중까지 변형율-경화현상을 보이며 작용하중에 대하여 휨 저항 거동이 뚜렷이 나타났음을 확인하였다. 실대형 실험체 연결부(Dry Joint) 균열은 시설물 상태평가 B등급 기준 25% 미만의 결과로써 연결부의 탄성적 거동을 확인하였고 극한하중 제거 후 최종적 잔류 변형은 0.114mm로써 세그먼트 연결부의 안정적 거동을 확인하였다.

키워드

복합긴장방식

스플라이스

세그멘탈

PSC개구제 U형거더

실대형 실험체

세그먼트 연결부

잔류변형

References

Brockenbrough, R.L., Merritt, F.S. (2011). Structural Steel Designer's Handbook. 5th Ed., ASCE Press, McGraw-Hill, US.
Cho, S.K., Youn, S.G., Park, Y.H. (2004). "Optimization of prestressed concrete girders for standard sectios." Journal of the Korean Society of Civil Engineers, Vol. 24, No. 4A, pp. 853-859.
Choi, S.H. (2011). "Dynamic performance evaluation of new type PSC railroad bridges." Journal of the Society of Disaster Information, Vol. 7, No. 4, pp. 259-265.
Eby, C.C., Kulicki, J.M., Kostem, C.N., Zellin, M.A. (1973). The Evaluation of St. Venant Torsional Constants for Prestressed Concrete I beams. Fritz Laboratory Report No.400.12, Lehigh University, Bethlehem, PA.
Hindi, A., Macgregor, R., Kreger, M.E., Breen, J.E. (1995). "Enhancing strength and ductility of post-tensioned segmental box girder bridges." ACI Structural Journal, Vol.92, No.1, pp. 33-44.
Karl, R., Melvin, R. (1973). Bridge Strudl Manual. Bridge Engineering, University of California Davis, CA, US.
KIBSE (2015). Commentary of Bridge Design Standard (Limit State Design), Seoul.
Kim, T.M., Park, J.H., Kim, M.K., Lim, Y.M. (2012). "A study on static behavior of 60 m span Half-Decked PSC girder." Journal of the Korean Society of Civil Engineers, Vol. 32 No. 2A, pp. 65-73.
Kim, W.H., Lee, J.W., Lee, S.M. (2020). "Evaluation for ultimate flexural strength of steel composite girder with high strength concrete." Journal of the Society of Disaster Information, Vol. 16, No. 4, pp. 796-805.
Korea Expressway Coperation (2007). Construction Magazine of the Gochang-Damyang Expressway on National Highway No. 14. Korea Expressway Coperation, Gyeonggi-do, Republic of Korea.
Ministry of Land, Infrastructure and Transport (2023). 2023 Road Bridge and Tunnel Status Report. Ministry of Land, Gyeonggi-do, Republic of Korea.
Ministry of Land, Infrastructure and Transport (2023). Detailed Instruction of the Safety Control and Maintenance of Establishments(Safety inspection, diagnosis). Ministry of Land, Infrastructure and Transport, Sejong, Republic of Korea.
Oh, S.H., Kim, S.G., Kim, Y.H., Choi, H.S. (2016). "PSC trapezoidal girder with precast prestressed concrete web joined by socket joints (Nodular Girder)." Magazine of the Korea Concrete Institute, Vol. 28, No. 3, pp. 40-45.
Takebayashi, T., Deeprasertwong, K., Leung, Y.W. (1994). "A full-scale destructive test of a precast segmental box girder bridge with dry joints and external tendons." Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 104, No. 3, pp. 297-315. 10.1680/istbu.1994.26780
Yeo, I.H. (2013). "Experimental performance estimate of a 40m PSC I girder for railway bridges." Journal of the Korean Society for Railway, Vol. 16, No. 5, pp. 394-401. 10.7782/JKSR.2013.16.5.394

Information

Publisher :The Korean Society of Disaster Information
Publisher(Ko) :한국재난정보학회
Journal Title :Journal of the Society of Disaster Information
Journal Title(Ko) :한국재난정보학회논문집
Volume : 20
No :2
Pages :329-338
DOI :https://doi.org/10.15683/kosdi.2024.6.30.329

[1] Brockenbrough, R.L., Merritt, F.S. (2011). Structural Steel Designer's Handbook. 5th Ed., ASCE Press, McGraw-Hill, US.

[2] Cho, S.K., Youn, S.G., Park, Y.H. (2004). "Optimization of prestressed concrete girders for standard sectios." Journal of the Korean Society of Civil Engineers, Vol. 24, No. 4A, pp. 853-859.

[3] Choi, S.H. (2011). "Dynamic performance evaluation of new type PSC railroad bridges." Journal of the Society of Disaster Information, Vol. 7, No. 4, pp. 259-265.

[4] Eby, C.C., Kulicki, J.M., Kostem, C.N., Zellin, M.A. (1973). The Evaluation of St. Venant Torsional Constants for Prestressed Concrete I beams. Fritz Laboratory Report No.400.12, Lehigh University, Bethlehem, PA.

[5] Hindi, A., Macgregor, R., Kreger, M.E., Breen, J.E. (1995). "Enhancing strength and ductility of post-tensioned segmental box girder bridges." ACI Structural Journal, Vol.92, No.1, pp. 33-44.

[6] Karl, R., Melvin, R. (1973). Bridge Strudl Manual. Bridge Engineering, University of California Davis, CA, US.

[7] KIBSE (2015). Commentary of Bridge Design Standard (Limit State Design), Seoul.

[8] Kim, T.M., Park, J.H., Kim, M.K., Lim, Y.M. (2012). "A study on static behavior of 60 m span Half-Decked PSC girder." Journal of the Korean Society of Civil Engineers, Vol. 32 No. 2A, pp. 65-73.

[9] Kim, W.H., Lee, J.W., Lee, S.M. (2020). "Evaluation for ultimate flexural strength of steel composite girder with high strength concrete." Journal of the Society of Disaster Information, Vol. 16, No. 4, pp. 796-805.

[10] Korea Expressway Coperation (2007). Construction Magazine of the Gochang-Damyang Expressway on National Highway No. 14. Korea Expressway Coperation, Gyeonggi-do, Republic of Korea.

[11] Ministry of Land, Infrastructure and Transport (2023). 2023 Road Bridge and Tunnel Status Report. Ministry of Land, Gyeonggi-do, Republic of Korea.

[12] Ministry of Land, Infrastructure and Transport (2023). Detailed Instruction of the Safety Control and Maintenance of Establishments(Safety inspection, diagnosis). Ministry of Land, Infrastructure and Transport, Sejong, Republic of Korea.

[13] Oh, S.H., Kim, S.G., Kim, Y.H., Choi, H.S. (2016). "PSC trapezoidal girder with precast prestressed concrete web joined by socket joints (Nodular Girder)." Magazine of the Korea Concrete Institute, Vol. 28, No. 3, pp. 40-45.

[14] Takebayashi, T., Deeprasertwong, K., Leung, Y.W. (1994). "A full-scale destructive test of a precast segmental box girder bridge with dry joints and external tendons." Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 104, No. 3, pp. 297-315. 10.1680/istbu.1994.26780

[15] Yeo, I.H. (2013). "Experimental performance estimate of a 40m PSC I girder for railway bridges." Journal of the Korean Society for Railway, Vol. 16, No. 5, pp. 394-401. 10.7782/JKSR.2013.16.5.394

Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

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