Abstract
Precast segmental girder bridges are threatened by impact loads during service, but there is currently little research on the impact behavior of such bridges. This study investigated the dynamic responses and failure modes of precast assembled segmental beams experimentally and numerically. 10 beam specimens were designed for static and impact tests, respectively. Numerical simulations were conducted in LS-DYNA and verified by comparing them with the test results. Failure mechanisms were analyzed by verified models. The results show that the local shear failure mechanism is prominent under impact loading. Two typical failure modes were obtained: oblique section failure and joint section direct shear failure, which are related to the relative positions of joint and impact point. Confining stress can effectively improve the static bearing capacity and impact resistance, but has little effect on the early response and final failure mode. The main failure cracks occur near the joint bottom in the initial stage of impact, when the impact force is resisted by the inertia force, resulting in a characteristic “N” shape in shear force distribution. Shear failure of the joints dominates the beam failure mode. A dynamic shear span ratio can evaluate the early force characteristics of the joint section.
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References
AASHTO (2003) Guide specifications for design and construction of segmental concrete bridges: 2003 interim revisions. 2nd ed. Washington, DC: AASHTO
Adhikary SD, Li B, Fujikake K (2012) Dynamic behavior of reinforced concrete beams under varying rates of concentrated loading. International Journal of Impact Engineering 47:24–38, DOI: https://doi.org/10.1016/j.ijimpeng.2012.02.001
Ahmed GH, Aziz OQ (2019a) Influence of intensity & eccentricity of posttensioning force and concrete strength on shear behavior of epoxied joints in segmental box girder bridges. Construction and Building Materials 197:117–129, DOI: https://doi.org/10.1016/j.conbuildmat.2018.11.220
Ahmed GH, Aziz OQ (2019b) Shear behavior of dry and epoxied joints in precast concrete segmental box girder bridges under direct shear loading. Engineering Structures 182:89–100, DOI: https://doi.org/10.1016/j.engstruct.2018.12.070
Ahmed GH, Aziz OQ (2019c) Shear strength of joints in precast posttensioned segmental bridges during 1959–2019, review and analysis. Structures (20 Sep.–Oct) 527–542, DOI: https://doi.org/10.1016/j.istruc.2019.06.007
Aguilera R, Guillermo (1989) Behavior of unbonded post-tensioning segmental beams with multiple shear keys. PhD Thesis, University of Texas at Austin, Austin, USA
Bakhoum MM (1991) Shear behavior and design of joints in precast concrete segmental bridges. PhD Thesis, Massachusetts Institute of Technology, Cambridge, USA
Chen W, Hao H, Chen S (2015) Numerical analysis of prestressed reinforced concrete beam subjected to blast loading. Materials & Design (1980–2015) 65:662–674, DOI: https://doi.org/10.1016/j.matdes.2014.09.033
Cotsovos DM (2010) A simplified approach for assessing the load-carrying capacity of reinforced concrete beams under concentrated load applied at high rates. International Journal of Impact Engineering 37(8):907–917, DOI: https://doi.org/10.1016/j.ijimpeng.2010.01.005
Do TV, Pham TM, Hao H (2018) Numerical investigation of the behavior of precast concrete segmental columns subjected to vehicle collision. Engineering Structures 156:375–393, DOI: https://doi.org/10.1016/j.engstruct.2017.11.033
Fu HC, Erki MA, Seckin M (1991) Review of effects of loading rate on reinforced concrete. Journal of Structural Engineering 117(12): 3660–3679, DOI: https://doi.org/10.1061/(ASCE)0733-9445(1991)117:12(3660)
Fujikake K, Li B, Soeun S (2009) Impact response of reinforced concrete beam and its analytical evaluation. Journal of Structural Engineering 135(8):938–950, DOI: https://doi.org/10.1061/(ASCE)ST.1943-541X.0000039
Issa MA, Abdalla HA (2007) Structural behavior of single key joints in precast concrete segmental bridges. Journal of Bridge Engineering 12(3):315–324, DOI: https://doi.org/10.1061/(asce)1084-0702(2007)12:3(315)
Kishi N, Mikami H, Matsuoka KG, Ando T (2002) Impact behavior of shear-failure-type RC beams without shear rebar. International Journal of Impact Engineering 27(9):955–968, DOI: https://doi.org/10.1016/S0734-743X(01)00149-X
Koseki K, Breen JE (1983) Exploratory study of shear strength of joints for precast segmental bridges. Research Rep. No. 248-1, Texas State Dept. of Highways and Public Transportation, Center for Transportation Research, Bureau of Engineering Research, Univ. of Texas at Austin, Austin, Tex.
Li G, Shen Y (2007) Calculation method for the shear bearing capacity of simply-supported externally prestressed concrete beams. Tumu Gongcheng Xuebao (China Civil Engineering Journal) 40(2):64–69, DOI: https://doi.org/10.3321/j.issn:1000-131X.2007.02.011
Li G (2007) Experimental study on the shear behavior of simply-supported externally prestressed concrete beams. China Civil Engineering Journal 40(2):58–63, DOI: https://doi.org/10.3321/j.issn:1000-131X.2007.02.010
Li J, Hao H, Wu C (2017) Numerical study of precast segmental column under blast loads. Engineering Structures 134:125–137, DOI: https://doi.org/10.1016/j.engstruct.2016.12.028
Luo Z, Wang Y, Wang T (2022) Shear behavior of epoxy joints in precast segmental bridges under impact loading. Engineering Structures 269:114641, DOI: https://doi.org/10.1016/j.engstruct.2022.114641
Murray YD, Abuodeh AY, Bligh RP (2007) Evaluation of LS-DYNA concrete material model 159. (No. FHWA-HRT-05-063). United States. Federal Highway Administration. Office of Research, Development, and Technology
Ožbolt J, Sharma A (2011) Numerical simulation of reinforced concrete beams with different shear reinforcements under dynamic impact loads. International Journal of Impact Engineering 38(12):940–950, DOI: https://doi.org/10.1016/j.ijimpeng.2011.08.003
Pham TM, Hao H (2016) Prediction of the impact force on reinforced concrete beams from a drop weight. Advances in Structural Engineering 19(11):1710–1722, DOI: https://doi.org/10.1177/1369433216649384
Pham TM, Hao H (2017a) Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams. International Journal of Impact Engineering 102:74–85, DOI: https://doi.org/10.1016/j.ijimpeng.2016.12.005
Pham TM, Hao H (2017b) Plastic hinges and inertia forces in RC beams under impact loads. International Journal of Impact Engineering 103:1–11, DOI: https://doi.org/10.1016/j.ijimpeng.2016.12.016
Podolny W, Muller JM (1994) Construction and design of prestressed concrete segmental bridges. Krieger, Melbourne, Australia.
Rabbat BG, Sowlat K (1987) Testing of segmental concrete girders with external tendons. PCI Journal 32(2):86–107, DOI: https://doi.org/10.15554/pcij.03011987.86.107
Saatci S, Vecchio FJ (2009) Effects of shear mechanisms on impact behavior of reinforced concrete beams. ACI structural Journals, DOI: https://doi.org/10.14359/56286
Turmo J, Ramos G, Aparicio ÁC (2006) Shear behavior of unbonded post-tensioned segmental beams with dry joints. ACI Materials Journal 103(3):409, DOI: https://doi.org/10.14359/15319
Zhao DB, Yi WJ, Kunnath SK (2017) Shear mechanisms in reinforced concrete beams under impact loading. Journal of Structural Engineering 143(9):04017089, DOI: https://doi.org/10.1061/(ASCE)ST.1943-541X.0001818
Zhao DB, Yi WJ, Kunnath SK (2018) Numerical simulation and shear resistance of reinforced concrete beams under impact. Engineering Structures 166:387–401, DOI: https://doi.org/10.1016/j.engstruct.2018.03.072
Zhou X, Mickleborough N, Li Z (2005) Shear strength of joints in precast concrete segmental bridges. ACI Structural Journal 102(1): 3, DOI: https://doi.org/10.14359/13525
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The work described in this paper was fully supported by grants from the Zhejiang Provincial Natural Science Foundation of China (Grant Nos.: LY19E080014, LY18E080004).
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Shi, B., Wang, Y., Chen, C. et al. Experimental Study on Failure Mode of Precast Assembled Segmental Beams under Impact Loading. KSCE J Civ Eng 28, 760–776 (2024). https://doi.org/10.1007/s12205-023-0055-7
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DOI: https://doi.org/10.1007/s12205-023-0055-7