钢筋混凝土梁动态剪切性能及尺寸效应细观研究

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摘要基于ABAQUS有限元数值计算平台，考虑混凝土材料的非均质性以及钢筋和混凝土的应变率效应，建立了钢筋混凝土（reinforced concrete ，RC）梁三维细观数值分析模型，探究了RC梁在不同应变率和配箍率条件下的剪切性能及其尺寸效应行为。结果表明：1)剪切承载力随着应变率和配箍率的增加均有不同程度的提高；2)名义抗剪强度随梁高的增大而减小，存在显著的尺寸效应现象；3)应变率和配箍率的增大一方面可以提高RC梁的名义抗剪强度，另一方面会削弱名义抗剪强度的尺寸效应行为；4)提出的RC梁静/动态剪切统一尺寸效应律同时考虑了尺寸效应、应变率效应和配箍率的影响，能够较好地预测RC梁在静态和动态作用下的名义抗剪强度，具有一定的准确性和合理性。

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	金浏
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关键词 ：钢筋混凝土梁, 应变率, 配箍率, 剪切性能, 尺寸效应, 细观模型

Abstract：Based on ABAQUS finite element numerical calculation platform, considering the heterogeneity of concrete materials and the strain rate effect of reinforcement and concrete, a three-dimensional (3D) meso-scale numerical analysis model of Reinforced Concrete (RC) beam was established, and then the shear performance and size effect of RC beams under different strain rates and stirrup ratios were investigated. The results show that: 1) With the increase of strain rate and stirrup ratio, the shear bearing capacity will increase to varying degrees. 2) The nominal shear strength decreases with the increase of beam height, and there is a significant size effect phenomenon. 3) The increase of strain rate and stirrup ratio can both increase the nominal shear strength of RC beams and weaken the size effect of nominal shear strength. 4) The proposed static/dynamic shear uniform size effect law of RC beams considers the influence of size effect, strain rate effect and stirrup ratio at the same time, which can well predict the nominal shear strength of RC beams under static and dynamic loads, with certain accuracy and rationality.

Key words： reinforced concrete（RC） beam Strain rate Stirrup ratio Shear performance Size effect Meso-scale model

收稿日期: 2022-01-05 出版日期: 2023-04-28

引用本文:

金浏，张江兴，李冬，杜修力. 钢筋混凝土梁动态剪切性能及尺寸效应细观研究[J]. 振动与冲击, 2023, 42(8): 194-205.
JIN Liu,ZHANG Jiangxing,LI Dong,DU Xiuli. A meso-scale study on dynamic shear performance and size effect of RC beams. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(8): 194-205.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I8/194

[1] Kani G N J. How safe are our large reinforced concrete beams? [J]. ACI Journal Proceedings, 1967, 64(3): 128-141.
[2] 金浏，王涛，杜修力. 无腹筋RC悬臂梁抗剪强度及尺寸效应理论研究[J]. 计算力学学报. 2019: 1-10.
Jin Liu, Wang Tao, Du Xiu-li. Theoretical study on shear strength and size effect of RC cantilever beams without web reinforcement [J]. Chinese Journal of Computational Mechanics, 2019: 1-10.
[3] Collins M P, Kuchma D. How safe are our large, lightly reinforced concrete beams, slabs, and footings? [J]. ACI Structural Journal, 1999, 96(4): 482-490.
[4] Jin L, Du X L, Li D, et al. Seismic behavior of RC cantilever beams under low cyclic loading and size effect on shear strength: An experimental characterization [J]. Engineering Structures, 2016, 122: 93-107.
[5] Bhal N S. Über den einfluβ der balkenhohe auf die schubtragfähtigkeit von einfeldrigen strahbetonbalken mit und ohne schubbewehrung [J]. Unversität Stuttgart, Stuttgart, Germany, 1968.
[6] Kong P Y L, Rangan B V. Share strength of high-performance concrete beams [J]. ACI Structural Journal, 1998, 95(6): 677-688.
[7] Walraven J, Lehwalter N. Size effect in short beams loaded in shear [J]. ACI Structural Journal, 1994, 91(5): 585-593.
[8] Yu Q, Bažant Z P, Asce H M. Can stirrups suppress size effect on shear strength of RC beams? [J]. Journal of Structural Engineering, 2011, 137(5): 607-617.
[9] Mutsuyoshi H, Machida A. Properties and failure of reinforced concrete members subjected to dynamic loading [J]. Transactions of the Japan Concrete Institute, 1984, 6: 521-528.
[10] Kulkarni S M, Shah S P. Response of reinforced concrete beams at high rates [J]. ACI Structural Journal, 1998, 95(6): 705-715.
[11] Ožbolt J, Sharma A. Numerical simulation of reinforced concrete beams with different shear reinforcements under dynamic impact loads [J]. International Journal of Impact Engineering, 2011, 38(12): 940-950.
[12] Ožbolt J, Bošnjak J, Sola E. Dynamic fracture of concrete compact tension specimen: Experimental and numerical study [J]. International Journal of Solids and Structures, 2013, 50(25-26): 4270-4278.
[13] Fujikake K, Li B. Dynamic shear resistance of RC beams [C]. Proceedings of the 9th International Conference on Shock and Impact Loads on Structures, 2011, 313-322.
[14] Fujikake K, Somraj A. Dynamic shear resistance of RC beams based on modified compression field theory [J]. Key Engineering Materials, 2016, 711: 799-805.
[15] Adhikary S D, Li B, Fujikake K. Effects of high loading rate on reinforced concrete beams [J]. ACI Structural Journal, 2014, 111(3): 651-660.
[16] Adhikary S D, Li B, Fujikake K. Dynamic behavior of reinforced concrete beams under varying rates of concentrated loading [J]. International Journal of Impact Engineering, 2012, 47(9): 24-38.
[17] 袁健，易伟建. 加载速率对钢筋混凝土梁受剪性能影响的试验研究[J]. 振动与冲击. 2019, 38(07): 119-127.
Yuan Jian, Yi Wei-jian. Tests for effects of loading rate on shear behaviors of RC beams [J]. Journal of vibration and shock, 2019, 38(07): 119-127.
[18] 肖诗云，张浩. 加载速率对钢筋混凝土梁剪切特性的影响研究[J]. 水利与建筑工程学报. 2018, 16(03): 7-13.
Xiao Shi-yun, Zhang Hao. Effects of loading rate on the shear behaviors of RC beams [J]. Journal of Water Resources and Architectural Engineering, 2018, 16(03): 7-13.
[19] 肖诗云，曹闻博，潘浩浩. 不同加载速率下钢筋混凝土梁力学性能试验研究[J]. 建筑结构学报. 2012, 33(12): 142-146.
Xiao Shi-yun, Cao Wen-bo, Pan Hao-hao. Experimental study on mechanical behavior of reinforced concrete beams at different loading rates [J]. Journal of Building Structures, 2012, 33(12): 142-146.
[20] 李敏，李宏男. 钢筋混凝土梁动态试验与数值模拟[J]. 振动与冲击. 2015(6): 110-115.
Li Min, Li Hong-nan. Dynamic tests and numerical simulation of reinforced concrete beams [J]. Journal of vibration and shock, 2015(6): 110-115.
[21] 李振宝，宝小超. 加载速率对钢筋混凝土梁动态性能的影响[J]. 防灾减灾工程学报. 2011, 31(06): 627-631.
Li Zhen-bao, Bao Xiao-chao. Effect of loading rate on the dynamic properties of reinforced concrete beams [J]. Journal of Disaster Prevention and Mitigation Engineering, 2011, 31(06): 627-631.
[22] Zhou X Q, Hao H. Mesoscale modeling of concrete tensile failure mechanism at high strain rates [J]. Computers and Structures, 2008, 86(21/22): 2013-2026.
[23] Zhou X Q, Hao H. Modelling of compressive behavior of concrete-like materials at high strain rate [J]. International Journal of Solids and Structures, 2008, 45(17): 4648-4661.
[24] Jin L, Yu W X, Du X L, et al. Dynamic size effect of concrete under tension: A numerical study [J]. International Journal of Impact Engineering, 2019, 132(OCT.):103318.
[25] 金浏. 细观混凝土分析模型与方法研究[D]. 北京：北京工业大学. 2014.
Jin Liu. Study on meso-scopic model and analysis method of concrete [D]. Beijing: Beijing University of Technology. 2014.
[26] Du X L, Jin L, Ma G W. A meso-scale analysis method for the simulation of nonlinear damage and failure behavior of reinforced concrete members [J]. International Journal of Damage Mechanics, 2013, 22(6): 878-904.
[27] Song Z, Lu Y. Mesoscopic analysis of concrete under excessively high strain rate compression and implications on interpretation of test data [J]. International Journal of Impact Engineering, 2012, 46: 41-55.
[28] Godat A, Qu Z, Lu X Z, et al. Size Effects for Reinforced Concrete Beams Strengthened in Shear with CFRP Strips [J]. Journal of Composites for Construction, 2012, 14(3): 260-271.
[29] Bischoff P H, Perry S H. Compressive behaviour of concrete at high strain rates [J]. Material and Structures, 1991, 24(6): 425-450.
[30] Park S W, Xia Z, Zhou M. Dynamic behavior of concrete at high strain rates and pressures: II. Numerical simulation [J]. International Journal of Impact Engineering, 2001, 25(9): 887-910.
[31] 肖诗云，张剑. 不同应变率下混凝土受压损伤试验研究[J]. 土木工程学报. 2010, 43(03): 40-45.
Xiao Shi-yun, Zhang Jian. Compressive damage experiment of concrete at different strain rates [J]. China Civil Engineering Journal, 2010, 43(3): 40-45.
[32] Grote D L, Park S W, Zhou M. Dynamic behavior of concrete at high strain rates and pressures: I. experimental characterization [J]. International Journal of Impact Engineering, 2001, 25(9): 869-886.
[33] International Federation for Structural Concrete. fib Model Code for Concrete Structures 2010 [S]. Lausanne: fib Bulletin, 2010.
[34] Cadoni E, Labibes K, Berra M, et al. High-strain-rate tensile behaviour of concrete [J]. Magazine of Concrete Research, 2000, 52(5): 365-370.
[35] Li H B, Zhao J, Li J R, et al. Experimental studies on the strength of different rock types under dynamic compression [J]. International Journal of Rock Mechanics and Mining Science, 2004, 41(S1): 68-73.
[36] Kim S M, Abu Al-Rub R K. Meso-scale computational modeling of the plastic-damage response of cementitious composites [J]. Cement and Concrete Research, 2011, 41(3): 339-358.
[37] Lubliner J, Oliver J, Oller S, et al. A plastic-damage model for concrete [J]. International Journal of Solids and Structures, 1989, 25(3): 299-326.
[38] Lee J, Fenves G L. Plastic-damage model for cyclic loading of concrete structures [J]. ASCE Journal of Engineering Mechanics, 1998, 124(8): 892-900.
[39] Lee W S, Lin C F, Liu T J. Impact and fracture response of sintered 316L stainless steel subjected to high strain rate loading [J]. Materials Characterization, 2007, 58(4): 363-370.
[40] 李敏，李宏男. 建筑钢筋动态试验及本构模型[J]. 土木工程学报. 2010, 43(04): 70-75.
Li Min, Li Hong-nan. Dynamic test and constitutive model for reinforcing steel [J]. China Civil Engineering Journal, 2010, 43(4): 70-75.
[41] Comité Euro-International Du Béton. Concrete Structures under Impact and Impulsive Loading. CEB Bulletin No. 187, the Committee. Lausanne, Switzerland, 1988.
[42] GB50010-2010，混凝土结构设计规范[S]. 北京: 中国建筑工业出版社, 2010.
GB50010-2010, Code for Concrete Structure Design [S]. Beijing: China Building Industry Press, 2010.
[43] Jin L, Yu W X, Du X L, et al. Mesoscopic numerical simulation of dynamic size effect on the splitting-tensile strength of concrete [J]. Engineering Fracture Mechanics, 2019, 209: 317-332.
[44] Tang T, Malvern L E, Jenkins D A. Rate effects in uniaxial dynamic compression of concrete [J]. Journal of Engineering Mechanics, 1992, 118(1): 108-124.
[45] Elices M, Rocco C G. Effect of aggregate size on the fracture and mechanical properties of a simple concrete [J]. Engineering Fracture Mechanics, 2008, 75(13): 3839-3851.
[46] Godat A, Labossiere P, Neale K W. Numerical investigation of the parameters influencing the behaviour of FRP shear-strengthened beams [J]. Construction Build Mater, 2012, 32: 90-98.
[47] Bažant Z P. Size effect in blunt fracture: concrete, rock, metal [J]. ASCE Journal of Engineering Mechanics, 1984; 110(4): 518-535.
[48] Majidi L, Usefi N, Abbasnia R. Numerical study of RC beams under various loading rates with LS-DYNA [J]. Journal of Central South University, 2018, 25(5): 1226-1239.