玻璃纤维复材约束纤维复材筋混凝土墩柱的拟静力数值模拟及恢复力模型

付欣; 潘墨岚; 王代玉; 吴端硕

doi:10.3724/j.gyjzG24040301

玻璃纤维复材约束纤维复材筋混凝土墩柱的拟静力数值模拟及恢复力模型

doi: 10.3724/j.gyjzG24040301

付欣¹,
潘墨岚^2,3,
王代玉^2,3, ,,
吴端硕^2,3

1. 中交一公局第三工程有限公司, 北京 101102;
2. 哈尔滨工业大学土木工程学院, 哈尔滨 150090;
3. 结构工程灾变与控制教育部重点实验室(哈尔滨工业大学), 哈尔滨 150090

基金项目:

国家重点研发计划项目(2022YFB3706500)。

详细信息

作者简介:
付欣,学士,高级工程师。

通讯作者:
王代玉,博士,教授,博士生导师,主要研究纤维增强复材在土木工程中的应用,daiyuwang@hit.edu.cn。

计量
- 文章访问数: 98
- HTML全文浏览量: 14
- PDF下载量: 7
- 被引次数: 0
出版历程
- 收稿日期: 2024-04-03
- 网络出版日期: 2024-06-24

Quasi-Static Numerical Simulations and Resilient Force Models of GFRP-Confined FRP Bar-Reinforced Concrete Piers

FU Xin¹,
PAN Molan^2,3,
WANG Daiyu^{2,3
, ,},
WU Duanshuo^2,3

1. No. 3 Engineering Co., Ltd., of CCCC First Highway Engineering Ltd., Beijing 101102, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
3. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education(Harbin Institute of Technology), Harbin 150090, China

摘要

摘要: 为研究由玻璃纤维增强复合材料(GFRP)布、碳纤维增强复合材料(CFRP)箍筋、GFRP纵筋与混凝土组成的新型组合墩柱,纤维增强复材(FRP)约束FRP筋增强混凝土(FCFRC)墩柱的抗震性能,基于OpenSees有限元软件开发FCFRC墩柱单调及往复水平荷载作用下的数值模拟模型,在此基础上以轴压比、剪跨比、纵筋配筋率、CFRP箍筋和GFRP布约束水平、混凝土强度和截面尺寸为变量进行5 184个FCFRC墩柱的单调静力弹塑性分析(Pushover分析),获得上述影响变量对屈服承载力、峰值承载力、弹性刚度、弹塑性刚度以及极限位移角等建立三折线恢复力模型的关键参数的影响规律;结果表明:提高轴压比、纵筋配筋率、混凝土强度和截面尺寸均能提高屈服承载力和极限承载力,箍筋和FRP布约束水平的影响相对较小。基于参数分析结果,获得了恢复力模型骨架曲线关键参数的计算式;此外还提出了FCFRC水平力-位移加卸载滞回规则,结合骨架曲线和滞回规则提出了FCFRC水平力-位移恢复力模型,通过与试验结果比较验证了恢复力模型的适用性。
- FRP约束混凝土 /
- FRP筋混凝土墩柱 /
- 拟静力模拟 /
- 恢复力模型
Abstract: To study the seismic performances of a novel of GFRP-confined FRP bar-reinforced concrete piers, also called FCFRC piers which were constructed of GFRP rebars, CFRP stirrups, GFRP sheets, and concrete, a numerical simulation model for FCFRC piers under the monotonic and cyclic horizontal loads was developed based on software OpenSee. By the model, taking axial compressive ratios, shear-span ratios, longitudinal reinforcement ratios, confining levels of CFRP stirrups and external wrapped sheets, strength degrees of concrete and sizes of cross sections of piers as variables, pushover analysis was conducted on 5 184 FCFRC pier specimens. The effect of the above variables on key parameters of the trilinear resilience model with the yield bearing capacity, the peak bearing capacity, the elastic and elastic-plastic stiffness, and the ultimate drift angle was obtained. Analysis results indicated that the yield and ultimate bearing capacities all could be improved by increasing axial compressive ratios, longitudinal reinforcement ratios, strength degrees of concrete and sizes of cross sections, however, the confining levels of CFRP stirrups and external wrapped sheets had a little effect on them relatively. Based on the results of parameter analysis, the formulas for key parameters of the resilient model were obtained. In addition,the loading-unloading hysteresis regulation between horizontal force and displacement of FCFRC piers was proposed. Combining the skeleton curve and the hysteresis regulation, a resilient model for horizontal force and displacement of FCFRC piers was presented, simultaneously, compared with the test results, the adaptability of the model was verified.
- FRP-confined concrete /
- FRP bar-reinforced concrete pier /
- quasi-static simulation /
- resilient force model

HTML全文

参考文献(24)

[1]	余巧凤, 梁栋. 中长期高速铁路网规划相关问题研究[J]. 铁道经济研究, 2017(1): 5-9.
[2]	张伟平, 顾祥林, 金贤玉, 等. 混凝土中钢筋锈蚀机机理及锈蚀钢筋力学性能研究[J]. 建筑结构学报,31(增刊1): 327-332.
[3]	郑山锁, 郑跃, 董立国, 等. 近海环境下锈蚀箍筋约束混凝土本构模型[J]. 浙江大学学报(工学版), 2020, 54(1): 48-55,72.
[4]	冯鹏, 王杰, 张枭, 等. FRP与海砂混凝土组合应用的发展与创新[J]. 玻璃钢/复合材料, 2014(12): 13-18.
[5]	叶列平, 冯鹏. FRP在工程结构中的应用与发展[J]. 土木工程学报, 2006,39(3): 24-36.
[6]	董恒磊. 配置GFRP纵筋与新型箍筋的混凝土墩柱约束机理与抗震性能[D]. 哈尔滨:哈尔滨工业大学, 2020.
[7]	蔡忠奎. 混合配筋预制节段拼装桥墩抗震性能与设计方法[D]. 哈尔滨:哈尔滨工业大学, 2018.
[8]	郝建兵, 吴刚, 吴智深. 基于震后残余位移的结构可修复性研究[J]. 建筑结构, 2013, 43(1): 1254-1257.
[9]	YUAN Y, WANG Z Y, WANG D Y. Shear behavior of concrete beams reinforced with closed-type winding glass fiber-reinforced polymer stirrups[J]. Advances in Structural Engineering, 2022, 25(12): 2577-2589.
[10]	DONG H L, WANG D Y, WANG Z Y, SUN Y L. Axial compressive behavior of square concrete columns reinforced with innovative closed-type winding GFRP stirrups[J]. Composite Structures, 2018, 192:115-125.
[11]	赵佳佳.FRP约束FRP筋增强混凝土柱轴压性能试验与分析[D]. 哈尔滨:哈尔滨工业大学, 2023.
[12]	吴端硕.FRP约束FRP筋增强混凝土墩柱抗震性能试验与分析[D]. 哈尔滨:哈尔滨工业大学, 2023.
[13]	王代玉. FRP 加固非延性钢筋混凝土框架结构抗震性能试验与分析[D]. 哈尔滨: 哈尔滨工业大学, 2012.
[14]	于峰, 徐国士, 程安春. PVC-CFRP圆管钢筋混凝土柱恢复力模型研究[J]. 建筑结构学报, 2015, 36(9): 66-72.
[15]	周长东, 田腾, 吕西林, 等. 预应力碳纤维条带加固混凝土圆形墩柱恢复力模型试验研究[J]. 工程力学, 2013, 30(2): 125-134.
[16]	李升才, 白巨巨, 朱永甫. 装配式复合箍筋约束高强混凝土柱恢复力模型研究[J]. 振动与冲击, 2022, 41(10): 205-214.
[17]	邓宗才, 曾洪超, 徐海宾. 层内混杂FRP加固混凝土柱恢复力模型研究[J]. 华北水利水电学院学报, 2012, 33(6): 69-72.
[18]	陈传向.FRP外包FRP筋增强混凝土墩柱轴压及抗震性能研究[D]. 哈尔滨:哈尔滨工业大学, 2021.
[19]	SRITHARAN S, PRIESTLEY N M J, SEIBLE F. Nonlinear finite element analyses of concrete bridge joint systems subjected to seismic actions[J]. Finite Elements in Analysis & Design, 2000, 36(3/4): 215-233.
[20]	TENG J G, LAM L, LIN G, et al. Numerical simulation of FRP-jacketed RC columns subjected to cyclic and seismic loading[J/OL]. Journal of Composites for Construction, 2016, 20(1)[2024-04-03].https://doi.org/10.1061/(ASCE)CC.1943-56140000584.
[21]	中华人民共和国住房和城乡建设部. 混凝土结构设计规范:GB 50010—2010[S]. 北京:中国建筑工业出版社,2015.
[22]	高王鑫.钢筋与套管约束CFRP纵筋混合配筋混凝土柱抗震性能研究[D].哈尔滨:哈尔滨工业大学, 2017.
[23]	MAN Y Q, WANG T Y, WANG Z Y, et al. Study on the bond performance of glass fiber-reinforced polymer bars considering the relative position between longitudinal bars and stirrups[J/OL]. Journal of Building Engineering, 2023, 71[2024-04-03].https://doi.org/10.1016/j.jobe.2023.106478.
[24]	FENG P, CHENG S, BAI Y, et al. Mechanical behavior of concrete-filled square steel tube with FRP-confined concrete core subjected to axial compression[J]. Composite Structures, 2015,123:312-324.