External prestressing reinforcement, PC continuous beam bridge, Static load analysis, Finite element analysis


In this paper, the practical engineering of a 420 m PC continuous beam bridge is taken as the research object, and an external prestressing reinforcement method is proposed to reinforce the damaged and cracked girder. The paper is to study the structural performance of PC continuous beam bridge before and after reinforcement. The heavy vehicle loading test of reinforced PC continuous beam bridge was carried out. A total of three test spans were selected, and each test span selected seven deflection test section and a strain test section. The corresponding finite element model was established and verified by the test results. Finally, it was concluded in this study that the external prestressing reinforcement method has a good effect on improving the loading capacity and overall performance of damaged bridges.


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Eamon, C. D., Jensen, E. A., Grace, N. F., 2012. Life-Cycle Cost Analysis of Alternative Reinforcement Materials for Bridge Superstructures Considering Cost and Maintenance Uncertainties. Journal of materials in civil engineering, vol. 24(4), 373-380., doi.10.1061/(ASCE)MT.1943-5533.0000398.

Michels, J., Staskiewicz, M., Czaderski, C., Kotynia, R., Harmanci, Y. E., and Motavalli, M., 2016. Prestressed CFRP Strips for Concrete Bridge Girder Retrofitting: Application and Static Loading Test. Journal of bridge engineering, vol. 21(5). doi.10.1061/(ASCE)BE.1943-5592.0000835.

Zhang, K., Sun, Q., 2018. Experimental Study of Reinforced Concrete T-Beams Strengthened with a Composite of Prestressed Steel Wire Ropes Embedded in Polyurethane Cement (PSWR-PUC). International journal of civil engineering, vol.16(9A), 1109-1123. doi.10.1007/s40999-017-0264-x.

Jawdhari, A., Peiris, A., and Harik, I., 2018. Experimental study on RC beams strengthened with CFRP rod panels. Engineering structures, Vol. 173, 693-705. doi.10.1016/j.engstruct.2018.06.105.

Cadenazzi, T., Dotelli, G., Rossini, M., Nolan, S., and Nanni, A., 2020. Cost and environmental analyses of reinforcement alternatives for a concrete bridge. Structure and infrastructure engineering, Vol. 16(4), 787-802. doi.10.1080/15732479.2019.1662066.

Czaderski, C., Shahverdi, M., and Michels, J., 2021. Iron based shape memory alloys as shear reinforcement for bridge girders. Construction and building materials, Vol. 274. doi.10.1016/j.conbuildmat.2020.121793.

Buchin-Roulie, V., Kaczkowski, N., Courcelles, C. D., and Toth, M., 2017. Innovative solution for bridge strengthening (for widening and compliance to new codes) by modification of initial static scheme. Paper presented at the IABSE Symposium, Vancouver 2017: Engineering the Future.

Aparicio, A. C., Ramos, G., and Casas, J. R., 2002. Testing of externally prestressed concrete beams. Engineering structures, Vol. 24(1),73-84. doi.

Tan, K. H., Tjandra, R. A., 2007. Strengthening of RC continuous beams by external prestressing. Journal of structural engineering-asce, Vol. 133(2), 195-204. doi.10.1061/(ASCE)0733-9445(2007)133:2(195).

Xu, J. L., Yi, Z. L., Yang, J. J., 2013. A Study on the Quality Assessment System of External Prestressing Reinforcement Technology. Applied Mechanics & Materials, Vol. 351-352, 1347-1353.

Shen, Y., Song, T., Li, G., 2015. Advances of external prestressing tendons in multi-span curved box-girder bridges: Multi-Span Large Bridges. Section 2.2, 55 pp.

JTG 3362-2018 Specifications for design of highway reinforced concrete and prestressed concrete bridges and culverts [S]. P.R. China, Ministry of Communications, 2018.

JTJ 021-1989. General Code for Design of Highway Bridges and Culverts[S], P.R. China, Ministry of Communications,1989.

JTG/T J21-01-2015 Load test methods for highway bridges [S]. P.R. China, Ministry of Communications, 2015.