Behavior of Precast Prestressed Concrete Segmental Beams
Abstract
The structural behavior of Segmental Precast Post-tensioned Reinforced Concrete (SPPRC) beams largely depends on the behavior of the joints that connect between the segments. In this research, series of static tests were carried out to investigate the behavior of full-scale SPPRC beams with different types of epoxy-glued joint configurations; multi-key joint, single key, and plain key joint. The reference specimen was monolithically casted beam and the other specimens were segmental beams with five segments for each one. The general theme from the experimental results reflects an approximate similarity in the behavior of the four beams with slight differences. Due to the high tensile strength of the used epoxy in comparison to concrete, cracks at joints occurred in the concrete cover which was attached to the epoxy mortar.
Keywords
References
Tito, J. A. and Gomez-Rivas, A. “Design, Construction, and Test of a Posttensioned Segmental Beam.” Ninth LACCEI Latin American and Caribbean Conference (LACCEI’2011), Medellín, Colombia. (August 2011).
Saibabu, S., Srinivas, V., Sasmal, S., Lakshmanan, N., and Iyer, N. “Performance Evaluation of Dry and Epoxy Jointed Segmental Prestressed Box Girders under Monotonic and Cyclic Loading.” Construction and Building Materials, 38 (Jan. 2013) 931-940. doi.org/10.1016/j.conbuildmat.2012.09.068.
Yuan, A., Dai, H., Sun, D., and Cai, J. “Behaviors of Segmental Concrete Box Beams with Internal Tendons and External Tendons under Bending.” Eng. Struct., 48 (Mar. 2013) 623-634. doi.org/10.1016/j.engstruct.2012.09.005.
Li, G., Yang, D., and Lei, Y. “Combined Shear and Bending Behavior of Joints in Precast Concrete Segmental Beams with External Tendons.” J. Bridge Eng., 18(10) (Oct. 2013) 1042-1052. doi:10.1061/(ASCE)BE.1943-5592.0000453.
Brenkus, N. R. and Hamilton, H. R. “Long Spans with Transportable Precast Prestressed Girders.” University of Florida, Department of Civil and Coastal Engineering, (2013).
Yuan, A., He, Y., Dai, H., and Cheng, L. “Experimental Study of Precast Segmental Bridge Box Beams with External Unbonded and Internal Bonded Posttensioning under Monotonic Vertical Loading.” J. Bridge Eng., 20(4) (Apr. 2015) 04014075. doi: 10.1061/(asce)be.1943-5592.0000663.
Yuan, A., Wu, W., Sun, D., and Dai, H. “Experimental on Flexural Behavior of Segmental Precast Concrete Beam with Internal Tendons and External Tendons.” Journal of Chang’an University (Natural Science Edition) 35(5), (Sep. 2015) 73-81.
Yuan, A., He, Y., Dai, H., and Sun, D. “Force Bearing Performance Test of Precast Segmental Bridge Beams with Different Tendon Ratios under Different Loads.” Journal of Chang’an University (Natural Science Edition) 36(1), (Jan. 2016) 58-68.
Jiang, H., Cao, Q., Liu, A., Wang, T., and Qiu, Y. “Flexural behavior of precast concrete segmental beams with hybrid tendons and dry joints.” Constr. and Building Materials 110 (May 2016) 1–7. doi:10.1016/j.conbuildmat.2016.02.003.
Yang, D. and Yi, T. “Combined Shear and Bending Behavior of Joints in Precast Concrete Segmental Beams with External Tendons ACEM16 Structures16 (Korea 2016).
Park, J., Choi, J., Jang, Y., Park, S.-K., and Hong, S., “An Experimental and Analytical Study on the Deflection Behavior of Precast Concrete Beams with Joints.” Appl. Sci. 7(11), (Nov. 2017), 1198. doi:10.3390/app7111198.
Wang, S. and Fu, C. C. “Simplification of Creep and Shrinkage Analysis of Segmental Bridges.” J. Bridge Eng., 20(8) (Aug. 2015) B6014001. doi: 10.1061/(asce)be.1943-5592.0000728.
Xihua, D., Liangfang, L., and Rong, X. “Creep Behavior of Precast Segmental Box Girder Bridge.” IOP Conf. Series: Earth and Environmental Science 81 (2017) 012138. doi:10.1088/1755-1315/81/1/012138.
Turmoa, J., Ramosb, G., and Apariciob, A. C. “FEM study on the structural behaviour of segmental concrete bridges with unbonded prestressing and dry joints: Simply supported bridges.” Eng. Struct. 27 (Sep. 2005) 1652–1661. doi:10.1016/j.engstruct.2005.04.011.
Jiang, H., Deng, Y., Qiu, Y., Wei, C., Chen, L., and Feng, W. “Numerical Analysis of Mechanical Properties of Precast Segmental Concrete Test Beam with External Tendons.” Advanced Materials Research 639-640 (Jan. 2013) 460-469. doi.org/10.4028/www.scientific.net/AMR.639-640.460.
Shamass, R., Zhou, X., and Alfano, G. “Finite-Element Analysis of Shear-Off Failure of Keyed Dry Joints in Precast Concrete Segmental Bridges.” J. Bridge Eng., 20(6) (Jun. 2014) 04014084. doi:10.1061/(asce)be.1943-5592.0000669
AASHTO LRFD Bridge Design Specifications. American Association of State Highway and Transportation Officials (AASHTO), 8th Edition, Washington, D.C. (2017).
ASTM A615 / A615M-16, (2016). “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.” ASTM International, West Conshohocken, PA. doi:10.1520/a0615_a0615m-16.
DOI: 10.28991/cej-0309109
Refbacks
- There are currently no refbacks.
Copyright (c) 2018 Mohannad Husain Al-Sherrawi
This work is licensed under a Creative Commons Attribution 4.0 International License.
