超高性能混凝土加固钢筋混凝土梁受弯性能研究

PDF(3819 KB)

振动与冲击 ›› 2024, Vol. 43 ›› Issue (11) : 288-296.

论文

常跃 1，黄俊旗 1,2，种迅 1,2，赵猛 1，蒋庆 1,2，冯玉龙 1,2

作者信息 +

Bending performance of RC beams reinforced with UHPC

CHANG Yue1, HUANG Junqi1,2, ZHONG Xun1,2, ZHAO Meng1, JIANG Qing1,2, FENG Yulong1,2

Author information +

文章历史 +

摘要

超高性能混凝土（UHPC）由于较高的强度和耐久性可作为理想的加固材料。首先基于已有试验结果，研究了可合理考虑加固层和混凝土梁接触面间粘聚力接触的UHPC加固钢筋混凝土梁精细有限元模型建模方法。在此基础上，建立了162个加固梁的有限元模型进行了数值模拟分析，研究了不同加固筋截面积、加固层厚度以及加固层有无拼缝等关键参数对构件破坏模式和承载力的影响规律。研究结果表明：考虑粘聚力接触的数值模型可以较好的模拟UHPC加固钢筋混凝土梁的受弯性能；加固层厚度与加固筋截面积均会影响试件破坏模式与承载力提升幅度，但对于含拼缝试件，加固层厚度对上述性能影响较小。

Abstract

Ultra-high performance concrete (UHPC) can be used as an ideal inorganic strengthening material owing to the high strength and improved durability. Based on the existing experimental results, this research proposed a refined finite element modeling method. The proposed method can be used in the numerical simulation of reinforced concrete (RC) beams strengthened with UHPC, and considering the cohesive contact between the reinforcement layer and the concrete beam contact surface. Then, finite element models of 162 reinforced beams were established and numerical simulation analysis were conducted, emphasizing on the influence of key parameters (e.g., such as cross-sectional area of reinforcement bars, thickness of reinforcement layer, and whether the reinforcement layer has joints) on the failure modes and bearing capacity of the components. The results indicated that the numerical model considering cohesive contact behavior could well predict the flexural behavior of RC beams strengthened with UHPC; the thickness of the strengthening layer and the cross-sectional area of the reinforcement bars both influenced the failure mode and the increasing of the load capacity, but for the specimens with joints, the thickness of the strengthening layer presented marginal influence on the behavior mentioned above.

导出引用

常跃 1，黄俊旗 1,2，种迅 1,2，赵猛 1，蒋庆 1,2，冯玉龙 1,2. 超高性能混凝土加固钢筋混凝土梁受弯性能研究[J]. 振动与冲击, 2024, 43(11): 288-296

CHANG Yue1, HUANG Junqi1,2, ZHONG Xun1,2, ZHAO Meng1, JIANG Qing1,2, FENG Yulong1,2. Bending performance of RC beams reinforced with UHPC[J]. Journal of Vibration and Shock, 2024, 43(11): 288-296

参考文献

[1] Zhu Y P, Zhang Y, Hussein H H, et al. Flexural strengthening of reinforced concrete beams or slabs using ultra-high performance concrete (UHPC): A state of the art review [J]. Engineering Structures, 2022, 205: 110035. [2] Murthy A R, Karihaloo B L, Priya D S. Flexural behavior of RC beams retrofitted with ultra-high strength concrete [J]. Construction and Building Materials, 2018, 175: 815-824. [3] Triantafillou T C., Plevris N. Strengthening of RC beams with epoxy-bonded fibre-composite materials [J]. Materials and Structures, 1992, 25: 201-211. [4] Ferrari V J, Hanai J B, Souza R A. Flexural strengthening of reinforcement concrete beams using high performance fiber reinforcement cement-based composite (HPFRCC) and carbon fiber reinforced polymers (CFRP) [J]. Construction and Building Materials, 2013, 48: 485-498. [5] Shen D J, Li M, Kang J C, et.al. Experimental studies on the seismic behavior of reinforced concrete beam-column joints strengthened with basalt fiber-reinforced polymer sheets [J]. Construction and Building Materials, 2021, 287: 122901. [6] 寇佳亮，郑东东，张浩博. 重复荷载下高延性混凝土加固受损混凝土无腹筋梁受弯性能试验研究[J]. 振动与冲击，2021，40（17）：279-289. KOU Jialiang,ZHENG Dongdong,ZHANG Haobo.Tests for flexural behavior of damaged concrete beams without web reinforcement strengthened with HDC under repeated load[J]. Journal of Vibration and Shock，2021，40（17）：279-289. [7] Aykac S, Kalkan I, Aykac B, et.al. Strengthening and Repair of Reinforced Concrete Beams Using External Steel Plates [J]. Journal of structural engineering, 2013, 139(6): 929-939. [8] Tang H, Peng J X, Zhang J R. Influence of Further Corrosion on Structural Behavior of Corroded Reinforced-Concrete Beam Strengthened with Steel Plate Using Different Strengthening Schemes [J]. Journal of Performance of Constructed Facilities, 2020, 34(2): 04019117. [9] Peng J X. Tang H, Zhang J R. Structural Behavior of Corroded Reinforced Concrete Beams Strengthened with Steel Plate [J]. Journal of Performance of Constructed Facilities, 2017, 31(4): 04017013. [10] Li L Z, Lo S H, Su R K L. Experimental Study of Moderately Reinforced Concrete Beams Strengthened with Bolted-Side Steel Plates [J]. Advances in Structural Engineering, 2013, 16(3): 499-516. [11] Kadhim M M, Jawdhari A, Nadir W, et al. Behaviour of RC beams strengthened in flexure with hybrid CFRP-reinforced UHPC overlays [J]. Engineering Structures, 2022, 262: 114356. [12] Zhang Y, Li X L, Zhu Y P, et al. Experimental study on flexural behavior of damaged reinforced concrete (RC) beam strengthened by toughness-improved ultra-high performance concrete (UHPC) layer [J]. Composites Part B, 2020, 186: 107834. [13] 寇佳亮，蔡鹏阳，王栋，等. HDC加固震损无腹筋混凝土梁受弯性能试验研究[J]. 振动与冲击，2022，41（8）：124-133. KOU Jialiang,CAI Pengyang,WANG Dong,et al. An experimental study on bending behavior of damaged beams reinforced with high ductile concrete[J]. Journal of Vibration and Shock，2022，41（8）：124-133. [14] Zhang Z C, Thomas Hsu C T. Shear Strengthening of Reinforced Concrete Beams Using Carbon-Fiber-Reinforced Polymer Laminates [J]. Journal of Composites for Constrction, 2005, 9(2): 158-169. [15] Nguyen D M, Chan T K, Cheong H K. Brittle Fallure And Bond Development Length Of CFRP-Concrete Beams [J]. Journal of Composites for Constrction, 2001, 5(1): 12-17. [16] Attari N, Amziane S, Chemrouk M. Flexural strengthening of concrete beams using CFRP, GFRP and hybrid FRP sheets [J]. Construction and Building Materials, 2012, 37: 746-757. [17] 霍静思，刘进通，赵灵雨，等. 冲击荷载下CFRP加固无腹筋梁的抗剪失效机理试验研究[J]. 振动与冲击，2017，36（15）：187-193. HUO Jingsi, LIU Jintong, ZHAO Lingyu,et al. Test for anti-shear failure mechanism of CFRP-strengthened RC beams without stirrups under impact loading[J]. Journal of Vibration and Shock，2017，36（15）：187-193. [18] Lau D, Qiu Q W, Zhou A, et al. Long term performance and fire safety aspect of FRP composites used in building structures [J]. Construction and Building Materials, 2016, 126: 573-585. [19] Li K, Wei Y X, Li Y P, et al. Flexural behavior of reinforced concrete beams strengthened with high-strength stainless steel wire rope meshes reinforced ECC [J]. Construction and Building Materials, 2023, 362: 129627. [20] Hung C C, Chen Y S. Innovative ECC jacketing for retrofitting shear-deficient RC members [J]. Construction and Building Materials, 2016, 111: 408-418. [21] Mirdan D, Saleh A R. Flexural performance of reinforced concrete (RC) beam strengthened by UHPC layer [J]. Case Studies in Construction Materials, 2022, 17: e01655. [22] Huang J Q, Jiang Q, Chong X, et al. Structural performance and section optimization of precast concrete sandwich panels with pin-type GFRP connectors [J]. Advances in Structural Engineering, 2021, 24(11): 1-13. [23] Huang B T, Zhu J X, Weng K F, et al. Prefabricated UHPC-concrete-ECC underground utility tunnel reinforced by perforated steel plate: Experimental and numerical investigations [J]. Case Studies in Construction Materials, 2022, 16: e00856. [24] Al-Osta M A, Sharif A M, Suhoothi A M, et al. Strengthening of axially and eccentrically compression loaded RC columns with UHPC jacketing system: Experimental investigation and finite element modeling [J]. Engineering Structures, 2021, 245: 112850. [25] Genikomsou A S, Polak M A. Finite element analysis of punching shear of concrete slabs using damaged plasticity model in ABAQUS [J]. Engineering Structures, 2015, 98: 38-48. [26] Ultra high performance fibre-reinforced concrete interim recommendations [S]. Paris: Association Fracaise de Génie Civil, 2013. [27] Zhu Y P, Zhang Y, Li X L, et al. Finite element model to predict structural response of predamaged RC beams reinforced by toughness-improved UHPC under unloading status [J]. Engineering Structures, 2021, 235: 112019. [28] Zhu Y P, Zhang Y, Hussein H H. Numerical modeling for damaged reinforced concrete slab strengthened by ultra-high performance concrete (UHPC) layer [J]. Engineering Structures, 2020, 209: 110031. [29] Mollazadeh M H, Wang Y C. New insights into the mechanism of load introduction into concrete-filled steel tubular column through shear connection [J]. Engineering Structures, 2014, 75: 139-151. [30] Nie Y, Xie T Y, Chen G M, et al. A 2D generic multi-surface cohesive zone model for simulating FRP-to-concrete mixed-mode debonding failure [J]. Composite Structures, 2022, 296: 115890. [31] Al-Majidi M H, Lampropoulos A P, Cundy A B, et al. Flexural performance of reinforced concrete beams strengthened with fibre reinforced geopolymer concrete under accelerated corrosion[J]. Structures, 2019, 19: 394-410.