多束平行碳纤维复合材料拉索锚固系统的承载性能研究

王梓豪; 李承高; 咸贵军; 熊浩; 白洁; 许国文

doi:10.13204/j.gyjzG22022314

多束平行碳纤维复合材料拉索锚固系统的承载性能研究

doi: 10.13204/j.gyjzG22022314

王梓豪^1,2,
李承高^1,2,
咸贵军^1,2,
熊浩^3,4,
白洁^3,4,
许国文^3,4, ,

1. 哈尔滨工业大学结构工程灾变与控制教育部重点实验室, 哈尔滨 150090;
2. 哈尔滨工业大学土木工程学院, 哈尔滨 150090;
3. 中国建筑第八工程局有限公司, 上海 200122;
4. 上海碳纤维复合材料土木工程应用工程技术研究中心, 上海 200122

基金项目:

上海市科技计划项目资助(20DZ2253000)

中建股份科技研发计划资助项目(CSCEC-2020-Z-1)

详细信息

作者简介:
王梓豪,男,1997年出生,硕士

通讯作者:
许国文,博士,xuguow@163.com。

计量
- 文章访问数: 173
- HTML全文浏览量: 25
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2022-02-23
- 网络出版日期: 2023-02-06

Research on Bearing Performance of Multi-Bundle Parallel CFRP Cable Anchorage System

WANG Zi-hao^1,2,
LI Cheng-gao^1,2,
XIAN Gui-jun^1,2,
XIONG Hao^3,4,
BAI Jie^3,4,
XU Guo-wen^{3,4
, ,}

1. Key Lab of Structures Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Harbin 150090, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
3. China Construction Eighth Engineering Division Co., Ltd., Shanghai 200122, China;
4. Research Center of Shanghai Carbon Fiber Composite Application Technology in Civil Engineering, Shanghai 200122, China

摘要

摘要: 碳纤维增强树脂(CFRP)复合材料相较于钢绞线具有轻质高强、耐腐蚀、耐疲劳、抗蠕变等优异性能,用于土木工程结构,可以减轻结构自重,延长结构寿命。单向CFRP材料具有典型正交各向异性特征,其抗剪及横向抗压性能较差,导致CFRP材料的锚固成为难题。本文采用试验与有限元模拟的方法,对多束平行碳纤维增强树脂复合材料拉索锚固系统的静载性能及应力分布进行了研究。研究结果表明:当采用多锥形锚具锚固多束CFRP平行拉索时,锚具导致的应力集中会损伤荷载端CFRP筋表面,导致CFRP拉索承载力下降;提出以黏结滑移本构表征CFRP筋与环氧树脂界面行为的有限元模拟方法,研究了CFRP拉索的破坏模式和应力分布情况,揭示了锚具挤压对CFRP拉索损伤的影响机制,预测了CFRP拉索的极限锚固承载力;最后,通过对锚具系统优化发现,增加CFRP拉索的锚固长度,可将锚固系统的锚固效率由70%提升至90%以上。
- CFRP拉索 /
- 锚固体系 /
- 锚固机制 /
- 破坏模式 /
- 有限元分析
Abstract: Compared with the steel wires, carbon fiber reinforced polymer (CFRP) composite has the excellent properties, such as light weight, high strength, superior corrosion, fatigue and creep resistance. When CFRP are used in civil engineering structures, the weight of the structures can be reduced and life can be prolonged. Unidirectional CFRP has the typical orthotropic characteristics with poor shear and transverse compressive properties, which makes the anchorage of CFRP to become a difficult problem. In this paper, the experiment and finite element simulation were used to study the bearing performance and stress distribution of multi-bundle parallel carbon fiber cables anchorage system. The results showed that when the multi-cone anchors were used to anchor multi-bundle parallel carbon fiber cables, the stress concentration caused by the anchors would destory the surface of the CFRP bars at the load end, resulting in a decrease of bearing capacity of the CFRP cables. A finite element simulation method was proposed with the interface behavior of CFRP bars and epoxy resin characterized by bond-slip constitutive. The failure modes and stress distribution of anchorage system of CFRP cable were studied, the damage mechanism of carbon fiber cable caused by the anchor extrusion was revealed, and the ultimate bearing capacity of anchorage of CFRP cables was predicted. Finally, through optimizing the anchorage system, it was found that increaseing anchoring length for carbon fiber cable could improve the anchoring efficiency of the anchoring system from 70% to 90%.
- CFRP cable /
- anchor system /
- anchoring mechanism /
- failure mode /
- finite element analysis

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参考文献(33)

[1]	张强先, 赵华伟, 方园, 等.悬索桥主缆钢丝腐蚀与防护的应用进展[J].南京工业大学学报(自然科学版), 2020, 42(3):278-283.
[2]	MEIER U, FARSHAD M.Connecting high-performance carbon-fiber-reinforced polymer cables of suspension and cable-stayed bridges through the use of gradient materials[J].Journal of Computer-Aided Materials Design, 1996, 3(1):379-384.
[3]	常鑫泉, 汪昕, 刘长源, 等.预应力FRP板加固RC梁抗弯性能有限元模型可靠性评价[J].南京工业大学学报(自然科学版), 2021, 43(3):318-328.
[4]	冯博.大吨位FRP拉索锚固体系及长期性能研究[D].南京:东南大学, 2019.
[5]	韩娟, 刘伟庆, 方海.纤维增强树脂基复合材料在土木基础设施领域中的应用[J].南京工业大学学报(自然科学版), 2020, 42(5):543-554.
[6]	FENG B, WANG X, WU Z.Evaluation and prediction of carbon fiber-reinforced polymer cable anchorage for large capacity[J].Advances in Structural Engineering, 2019, 22(8):1952-1964.
[7]	李承高.碳/玻璃纤维复合杆体的锚固及其耐久性能研究[D].哈尔滨:哈尔滨工业大学, 2019.
[8]	WANG L C, ZHANG J Y, XU J, et al.Anchorage systems of CFRP cables in cable structures:a review[J].Construction and Building Materials, 2018, 160:82-99.
[9]	SCHMIDT J W, BENNITZ A, TALJSTEN B, et al.Mechanical anchorage of FRP tendons:a literature review[J].Construction and Building Materials, 2012, 32:110-121.
[10]	ZHANG B, BENMOKRANE B, EBEAD U A A.Design and evaluation of fiber-reinforced polymer bond-type anchorages and ground anchors[J].International Journal of Geomechanics, 2006, 6(3):166-175.
[11]	LIU Y, ZWINGMANN B, SCHLAICH M.Carbon fiber reinforced polymer for cable structures:a review[J].Polymers, 2015, 7(10):2078-2099.
[12]	李承高, 郭瑞, 黄翔宇, 等.碳纤维增强树脂复合材料(CFRP)拉挤板材的楔形-挤压锚固机制[J].南京工业大学学报(自然科学版), 2021, 43(3):358-365.
[13]	ZHANG B R, BENMOKRANE B.Design and evaluation of a new bond-type anchorage system for fiber reinforced polymer tendons[J].Canadian Journal of Civil Engineering, 2004, 31(1):14-26.
[14]	ZHANG B R, BENMOKRANE B, CHENNOUF A, et al.Tensile behavior of FRP tendons for prestressed ground anchors[J].Journal of Composites for Construction, 2001, 5(2):85-93.
[15]	MEI K, SERACINO R, LÜ Z.An experimental study on bond-type anchorages for carbon fiber-reinforced polymer cables[J].Construction and Building Materials, 2016, 106:584-591.
[16]	吕志涛, 梅葵花.国内首座CFRP索斜拉桥的研究[J].土木工程学报, 2007(1):54-59.
[17]	SHI J Z, XU P C, WU Z S, et al.A novel anchor method for multi-tendon FRP cable:manufacturing and experimental study[J].Journal of Composites for Construction, 2015, 19(6), 04015010.
[18]	WANG X, XU P, WU Z, et al.A novel anchor method for multi-tendon FRP cable:concept and FE study[J].Composite Structures, 2015, 120:552-564.
[19]	FANG Z, ZHANG K, TU B.Experimental investigation of a bond-type anchorage system for multiple FRP tendons[J].Engineering Structures, 2013, 57:364-373.
[20]	ZHANG K, FANG Z, NANNI A, et al.Experimental study of a large-scale ground anchor system with FRP tendon and RPC grout medium[J].Journal of Composites for Construction, 2015, 19(4):04014075.1-04014075.8.
[21]	吴敬宇.碳纤维拉索锚固体系及其性能研究[D].哈尔滨:哈尔滨工业大学, 2018.
[22]	杨龙.碳纤维拉索锚具及水浸环境对其疲劳性能的影响研究[D].桂林:桂林理工大学, 2020.
[23]	朱万旭, 杨龙, 朱世聪, 等.碳纤维筋束多级锥体锚具的设计和试验研究[J].工业建筑, 2020, 50(8):177-181.
[24]	LI C G, XIAN G J.Novel wedge-shaped bond anchorage system for pultruded CFRP plates[J].Materials and Structures, 2018, 51(6):162.1-162.14.
[25]	中国人民共和国国家质量监督检验检疫总局.纤维增强塑料拉伸性能试验方法:GB/T 1447-2005[S].北京:中国标准出版社, 2005.
[26]	中国国家标准化管理委员会.预应力筋用锚具、夹具和连接器:GB/T 14370-2015[S].北京:中国标准出版社, 2015.
[27]	LI F, ZHAO Q L, CHEN H S, et al.Prediction of tensile capacity based on cohesive zone model of bond anchorage for fiber-reinforce dpolymer tendon[J].Composite Structures, 2010, 92(10):2400-2405.
[28]	WANG Z, LI C, SUI L, et al.Effects of adhesive property and thickness on the bond performance between carbon fiber reinforced polymer laminate and steel[J].Thin-Walled Structures, 2021, 158.DOI: 10.1016/j.tws.2020.107176.
[29]	PARK J S, JUNG W T, KANG J Y, et al.Behavior characteristics of bonded type anchorage for CFRP tendon[J].Engineering, 2013, 5(11):909-918.
[30]	ZHOU J, WANG X, PENG Z, et al.Failure mechanism and optimization of fiber-reinforced polymer cable-anchor system based on 3D finite element model[J].Engineering Structures, 2021, 243.DOI: 10.106/j.engstruct.2021.112664.
[31]	王梓豪.碳纤维复合材料平行拉索用多锥形锚固体系研究[D].哈尔滨:哈尔滨工业大学, 2021.
[32]	HASHIN Z.Fatigue failure criteria for unidirectional fiber composites[J].Journal of Applied Mechanics, 1981, 48(4):846-852.
[33]	张攀.碳纤维复合材料平行束索及锚具受力性能与设计方法研究[D].北京:清华大学, 2014.