Experimental study on shrinkage and creep of prestressed simply supported box girder for high-speed railway

Abstract

To investigate the long-term performance of a 32 m prestressed simply supported box girder, a 1:4 scale prestressed concrete simple supported box girder was cast. The casting procedure adheres to the principle of stress equivalence within the concrete in the middle span after tensioning of prestressed tendons. Utilizing the CEB-FIP 90 model as a foundation, we established a long-term deformation calculation model for the box girder. Subsequently, the reliability of the long-term deformation model was confirmed by employing data from a 96 d long-term deformation test conducted on the box girder. Meanwhile, a new database was created by integrating shrinkage and creep experiment data with the shrinkage and creep database developed by Bazant. The shrinkage and creep uncertainty coefficients were introduced to complete the modeling of concrete shrinkage creep uncertainty calculations. The results demonstrate that the long-term deformation prediction model can effectively characterize the tendency of the mid-span upward deflection in the box girder. At 988 d, the upward deflection at the mid-span of the 1:4 scale model was expected to reach approximately 3.67 mm. It is worth noting that the CEB-FIP 90 model tends to slightly overestimate long-term deformation compared with experimental results. Additionally, it significantly underestimates the shrinkage strain observed in the test results. The uncertainty associated with the long-term deformation prediction of the structural system increased as the prediction time extended.

Graphical abstract

Keywords

shrinkage / creep / box girder / quantization of uncertainty / long-term deformation / mid-span upper arch

References

[1] QianL X. World High-speed Railway Technology. Beijing: China Railway Press, 2003 (in Chinese)

[2] ZhaoG T. Research and application of general construction technology for high-speed railway in China. Journal of the China Railway Society, 2019, 41(01): 87–100 (in Chinese)

[3] LiX GHuang S G. High-speed Rail Technology. Beijing: China Railway Press, 2015 (in Chinese)

[4] He X H, Wu T, Zou Y, Chen Y F, Guo H, Yu Z. Recent developments of high-speed railway bridges in China. Structure and Infrastructure Engineering, 2017, 13(12): 1584–1595

[5] CEB-FIP. Model Code for Concrete Structures 1978. Lausanne: Comite Euro-International du Beton, 1978

[6] CEB-FIP. Model Code for Concrete Structures 1990. Lausanne: Comite Euro-International du Beton, 1990

[7] CEB-FIP. Model Code for Concrete Structures 2010. Lausanne: Comite Euro-International du Beton, 2010

[8] CEB-FIP. Model Code for Concrete Structures 2020. Lausanne: Comite Euro-International du Beton, 2020

[9] ACICommittee 209. Prediction of Creep, Shrinkage, and Temperature Effects in Concrete Structures. Farmington Hills, MI: American Concrete Institute, 1982

[10] ACICommittee 209. Guide for Modeling and Calculating Shrinkage and Creep in Hardened Concrete. Farmington Hills, MI: American Concrete Institute, 2008

[11] Bazant Z P, Murphy W P. Creep and shrinkage prediction model for analysis and design of concrete structures-model B3. Materials and Structures, 1995, 28(180): 357–365

[12] WendnerRHubler M HBazantZ P. The B4 model for multi-decade creep and shrinkage prediction. In: Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete. Reston, VA: American Society of Civil Engineers, 2013, 429–436

[13] Goel R, Kumar R, Paul D K. Comparative study of various creep and shrinkage prediction models for concrete. Journal of Materials in Civil Engineering, 2007, 19(3): 249–260

[14] Gardner N J, Lockman M J. Design provisions for drying shrinkage and creep of normal strength concrete. ACI Materials Journal, 2001, 98(2): 159–167

[15] ZhengZ HHu DLiuPShaFLiuL YuZ. Considering the effect of the randomness of concrete strength and relative humidity on concrete creep. Structural Concrete, 2021, 22(S1): E916–E930

[16] Liu P, Zheng Z H, Yu Z W. Cooperative work of longitudinal slab ballastless track-prestressed concrete simply supported box girder under concrete creep and temperature gradient. Structures, 2020, 27: 559–569

[17] XueK. Shrinkage and creep analysis of high-rise structure based on ABAQUS. Thesis for the Master’s Degree. Changsha: Hunan University, 2014 (in Chinese)

[18] Bazant Z P, Liu K L. Random creep and shrinkage in structures: Sampling. Journal of Structural Engineering, 1985, 111(5): 1113–1134

[19] PanZ F. Time-Dependent Deformation of Long-Span Prestressed Concrete Box Girder Bridge. Nanjing: Southeast University Press, 2013, 104–118 (in Chinese)

[20] LamJ P. Evaluation of concrete shrinkage and creep prediction models. Thesis for the Master’s Degree. San Jose State: San Jose State University, 2002

[21] Al-Manaseer A, Lam J P. Statistical evaluation of shrinkage and creep models. ACI Materials Journal, 2005, 102(3): 170–176

[22] Raphael W, Zgheib E, Chateauneuf A. Experimental investigations and sensitivity analysis to explain the large creep of concrete deformations in the bridge of Cheviré. Case Studies in Construction Materials, 2018, 9: e00176

[23] Han B, Xie H B, Zhang D J, Ma X. Sensitivity analysis of creep models considering correlation. Materials and Structures, 2016, 49(10): 4217–4227

[24] XiangX B. Experiment and research on concrete creep for long spans continuous rigid-framed bridge. Thesis for the Master’s Degree. Wuhan: Wuhan University of Technology, 2007 (in Chinese)

[25] MaM. Experimental research on shrinkage and time deformations of main bridge with (108 + 2 × 185 + 115) m continual rigid frame. Journal of Railway Engineering Society, 2010, 27(10): 67–73 (in Chinese)

[26] HuDChenZ Q. Experimental research on the deformations for shrinkage and creep of beams in prestressed concrete bridges. China Civil Engineering Journal, 2003, 36(8): 79–85 (in Chinese)

[27] LuoX GZhong X GDaiG L. Experimental study on the deformations for shrinkage and creep of beams in non-glued prestressed high performance fly ash concrete bridges. Engineering Mechanics, 2006, 23(7): 136–141 (in Chinese)

[28] Lee J, Lee K C, Lee Y J. Long-term deflection prediction from computer vision-measured data history for high-speed railway bridges. Sensors, 2018, 18(5): 1488

[29] SongJ X. The 32 m span box girder prestressing effect monitoring and creep camber control for Wuhan–Guangzhou. Strategic Study of CAE, 2009, 11(1): 60–66 (in Chinese)

[30] BaiX M. Stochastic analysis about highway prestressed concrete beam deflection with creep effects. Thesis for the Master’s Degree. Chengdu: Southwest Jiaotong University, 2014 (in Chinese)

[31] Sousa H, Santos L O, Chryssanthopoulos M. Quantifying monitoring requirements for predicting creep deformations through Bayesian updating methods. Structural Safety, 2019, 76: 40–50

[32] Yang I H. Probabilistic analysis of creep and shrinkage effects in PSC box girder bridges. KSCE Journal of Civil Engineering, 2003, 7(3): 275–284

[33] Yang I H. Uncertainty and sensitivity analysis of time-dependent effects in concrete structures. Engineering Structures, 2007, 29(7): 1366–1374

[34] Han B, Xiang T Y, Xie H B. A Bayesian inference framework for predicting the long-term deflection of concrete structures caused by creep and shrinkage. Engineering Structures, 2017, 142: 46–55

[35] LiX PRobertson I N. Long-term performance predictions of the North Halawa Valley Viaduct. Thesis for the Master’s Degree. Honolulu: University of Hawaii, 2003

[36] Bazant Z P, Li G H. Comprehensive database for concrete creep and shrinkage. ACI Materials Journal, 2008, 105(6): 635–637

[37] Hubler M H, Wendner R, Bazant Z P. Comprehensive database for concrete creep and shrinkage: analysis and recommendations for testing and recording. ACI Materials Journal, 2015, 112(4): 547–558

[38] 350 km/h passenger dedicated railway ballastless track post-tensioned prestressed concrete simple supported box girder. Chongqing: China Railway Eight Bureau Group Bridge Engineering Co., LTD, 2013 (in Chinese)

[39] AlbertoC. Structural Mechanics Fundamentals. London: CRC Press, UK, 2013

[40] GB50010-2010. Code for Design of Concrete Structures. Beijing: Ministry of Housing and Urban-Rural Development of the People’s Republic of China, 2010

[41] TB10002-2017. Code for Design of Railway Bridges and Culverts. Beijing: National Railway Administration of People’s Republic of China, 2017

[42] TanZ T. Shrinkage and creep analysis of concrete considering reinforcement based on ABAQUS. Thesis for the Master’s Degree. Changsha: Hunan University, 2016 (in Chinese)

[43] WeiW. Application of Matlab Mathematics Toolbox Technical Manual. Beijing: National Defence Industry Press, 2004 (in Chinese)

[44] WuF Y. Analysis and test of prestressed concrete simple supported box girder for high-speed railway and passenger dedicated line. Thesis for the Master’s Degree. Shanghai: Tongji University, 2009 (in Chinese)

[45] GB/T50082-2009. Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete. Beijing: Ministry of Housing and Urban-Rural Development of the People’s Republic of China, 2009

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