带锈蚀栓钉的组合梁疲劳后抗弯承载力影响因素分析
PDF下载 (190)王 凯,刘小玲,汪 炳.带锈蚀栓钉的组合梁疲劳后抗弯承载力影响因素分析[J].宁波大学学报(理工版),2023,36(5):51-57.DOI:10.20098/j.cnki.1001-5132.2023.0336
WANG Kai,LIU Xiaoling,WANG Bing.Analysis of influencing factors on flexural capacity of composite beams with corroded studs after fatigue[J].Journal of Ningbo University(Natural Science & Engineering Edition),2023,36(5):51-57.DOI:10.20098/j.cnki.1001-5132.2023.0336
| Title: | Analysis of influencing factors on flexural capacity of composite beams with corroded studs after fatigue |
| 作者: | 王 凯, 刘小玲, 汪 炳 |
| Author(s): | WANG Kai, LIU Xiaoling, WANG Bing |
| 关键词: | 组合梁; 栓钉; 抗弯承载力; 锈蚀; 疲劳; 断裂力学 |
| Keywords: | composite beam; stud; flexural capacity; corrosion; fatigue; fracture mechanics |
| 分类号: | U448.38 |
| DOI: | 10.20098/j.cnki.1001-5132.2023.0336 |
| 文献标识码: | A |
| 摘要: | 为了探索钢-混组合梁锈蚀和疲劳后抗弯承载力的影响因素, 开展了组合梁的理论和试验研究. 基于断裂力学和疲劳剩余强度理论得到栓钉的剩余强度, 以及钢梁和混凝土的剩余强度, 在此基础上建立了一种组合梁抗弯承载力的计算方法, 并利用5个试验梁进行了验证. 最后选取混凝土强度、栓钉直径、疲劳加载上限、栓钉锈蚀率等影响因素进行参数分析. 结果表明: 随着栓钉锈蚀率增大, 抗弯承载力呈现先慢后快的退化趋势, 当锈蚀率为20％时, 组合梁抗弯承载力下降9.1％; 所建模型与试验值较为吻合, 表明该模型具有良好的适用性; 混凝土强度、疲劳加载上限、栓钉锈蚀率以及栓钉数是影响组合梁抗弯承载力的主要因素. |
| Abstract: | In order to explore the factors affecting the flexural capacity of steel-concrete composite beams after corrosion and fatigue, this paper conducts theoretical and experimental research on the composite beams. Based on fracture mechanics and the theory of fatigue residual strength, the residual strength of studs, as well as that residual strength of steel beams and concrete, are determined. Based on this, a calculation method for the flexural capacity of composite beams is established, and the data of 5 test beams are used for verification. Finally, the influencing factors such as concrete strength, stud diameter, upper limit of fatigue loading, and stud corrosion rate are selected for parameter analysis. The results show that with the increase of stud corrosion rate, the flexural capacity shows a degradation trend of first slowing down and then accelerating, and when the corrosion rate reaches 20%, the flexural capacity of the composite beam decreases by 9.1%. The established model is in good agreement with the experimental values and has good applicability. Concrete strength, upper limit of fatigue loading, stud corrosion rate, and number of studs are the main factors affecting the flexural capacity of composite beams. |
| 参考文献 /References: | [1] Huang D W, Wei J, Liu X C, et al. Experimental study on long-term performance of steel-concrete composite bridge with an assembled concrete deck[J]. Construction and Building Materials, 2019, 214:606-618. [2] Hanswille G, Porsch M, Ustundag C. Resistance of headed studs subjected to fatigue loading Part II: Analytical study[J]. Journal of Constructional Steel Research, 2007, 63(4):485-493. [3] Abu-Sena A B, Shaaban I G, Soliman M S, et al. Effect of geometrical properties on strength of externally prestressed steel-concrete composite beams[J]. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 2020, 173(1):42-62. [4] 薛文, 陈驹, 吴麟, 等. 栓钉锈蚀钢-混凝土组合梁试验研究[J]. 建筑结构学报, 2013, 34(S1):222-226. [5] 聂建国, 余志武. 钢-混凝土组合梁在我国的研究及应用[J]. 土木工程学报, 1999, 32(2):3-8. [6] Ding F X, Yin G A, Wang H B, et al. Static behavior of stud connectors in bi-direction push-off tests[J]. Thin- Walled Structures, 2017, 120:307-318. [7] 荣学亮, 黄侨, 任远. 栓钉连接件锈蚀后静力性能和抗疲劳性能的试验研究[J]. 土木工程学报, 2013, 46(2): 10-18. [8] Pape T M, Melchers R E. Performance of 45-year-old corroded prestressed concrete beams[J]. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 2013, 166(10):547-559. [9] Jnaid F, Aboutaha R S. Numerical and analytical models of RC beams with corroded compression reinforcement[J]. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 2019, 172(12):859-870. [10] Yu Q Q, Wu Y F. Fatigue retrofitting of cracked steel beams with CFRP laminates[J]. Composite Structures, 2018, 192:232-244. [11] Chen J, Jiang A Y, Jin W L. Behaviour of corroded stud shear connectors under fatigue loading[C]//Proceedings of the 5th International Conference on the Durability of Concrete Structures. West Lafayette, IN: Purdue University Press, 2016:1-7. [12] 汪炳. 基于疲劳累积损伤效应的钢-混凝土组合梁桥剩余力学性能研究[D]. 南京: 东南大学, 2017. [13] Cao G H, Yang L A, Zhang W, et al. Long-term mechanical properties of steel-concrete connectors subjected to corrosion and load coupling[J]. Journal of Materials in Civil Engineering, 2018, 30(5):04018058. [14] Kuang Y C, Wang K, He Y H, et al. Fatigue behaviour of corroded stud based on crack growth theory[J]. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 2023, 176(1):2-12. [15] Wei R P. Environmental considerations for fatigue cracking[J]. Fatigue & Fracture of Engineering Materials & Structures, 2002, 25(8/9):845-854. [16] 匡亚川, 陶莉, 贺宇豪. 锈蚀栓钉钢-混凝土组合梁的疲劳寿命预测模型[J]. 中南大学学报(自然科学版), 2021, 52(3):770-778. [17] 荣学亮, 黄侨, 赵品. 考虑疲劳损伤的栓钉连接件抗剪承载力研究[J]. 中国公路学报, 2013, 26(4):88-93; 101. [18] 余志武, 石卫华, 匡亚川. 锈蚀栓钉力学性能试验研究[J]. 中南大学学报(自然科学版), 2014, 45(1):249-255. [19] 陈宗平, 黎盛欣, 周济, 等. 海洋环境GFRP筋海水海砂混凝土梁受力性能试验及承载力计算[J/OL]. 材料导报, 2023, 37(20):1-18. [20] Schaff J R, Davidson B D. Life prediction methodology for composite structures. Part I - Constant amplitude and two-stress level fatigue[J]. Journal of Composite Materials, 1997, 31(2):128-157. [21] Aas-Jakobsen K, Lenschow R. Behavior of reinforced columns subjected to fatigue loading[J]. ACI Journal Proceedings, 1973, 70(3):199-206. [22] 汪炳, 黄侨, 刘小玲. 考虑多组件疲劳损伤的组合梁剩余承载力计算方法及试验验证[J]. 工程力学, 2020, 37(6):140-147. [23] 刘保东, 李鹏飞, 李林等. 混凝土含水率对强度影响的试验[J]. 北京交通大学学报, 2011, 35(1):9-12. |
| 备注/Memo: | 收稿日期: 2023－03－22. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 浙江省自然科学基金（LQ19E080006）. 第一作者: 王凯（1997－）, 男, 安徽阜阳人, 在读硕士研究生, 主要研究方向: 钢-混组合梁力学性能. E-mail: wangkai9705@163.com *通信作者: 刘小玲（1988－）, 女, 江苏连云港人, 博士/副教授, 主要研究方向: 公路桥梁的养护与评估. E-mail: liuxiaoling@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
