既有桥梁墩柱组合加固界面性能研究

朱瑞林; 梁湖清; 唐孟雄; 庄亮东; 冯伟

doi:10.3724/j.gyjzG24040812

既有桥梁墩柱组合加固界面性能研究

doi: 10.3724/j.gyjzG24040812

1. 清华大学, 北京 100084;
2. 广州建筑集团有限公司, 广州 510030

基金项目:

国家自然科学基金项目（52121005）。

详细信息

作者简介:
朱瑞林，博士研究生，主要从事钢-混凝土组合结构方面的研究，zrl23@mails.tsinghua.edu.cn。

通讯作者:
庄亮东，博士，助理教授，主要从事钢-混凝土组合结构方面的研究， zhuangld12@126.com。

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出版历程
- 收稿日期: 2024-04-08
- 刊出日期: 2025-10-31

Interfacial Performance in the Composite Strengthening of Existing Bridge Piers

1. Tsinghua University, Beijing 100084, China;
2. Guangzhou Municipal Construction Group Co., Ltd., Guangzhou 510030, China

摘要

摘要: 钢-混凝土组合加固技术近年来发展迅速，因其具有节省施工时间、场地等优势而逐渐成为桥梁加固的最佳选择之一。以深圳市车公庙立交北转东匝道第三联的墩柱加固工程为例，针对其提出了组合加固方案，并选择此构造下并未被充分研究过的加固后新旧混凝土界面性能作为重点研究对象。通过9组对比试验，分析了组合加固方案中新旧混凝土界面强度的相关影响因素。研究发现：在提出的组合加固构造下由于后期存在显著的泊松效应，构件整体延性和承载能力得到了提升。同时，借助现有加固规范提出的计算式，引入了新的“锯齿形开槽”情况下的抗剪强度参数。
- 混凝土界面抗剪 /
- 锯齿形凿毛 /
- 钢-混凝土组合结构 /
- 组合加固
Abstract: The technology of the steel-concrete composite reinforcement method has developed rapidly in recent years. This method has emerged as one of the best choices for reinforcement， as it saves both time and space. At the same time， research on this method continues to progress. This study takes the third section of the north-to-east ramp of Chegongmiao Interchange in Shenzhen as the research object. A composite reinforcement scheme is proposed for the single-column pier of this curved bridge， with a focus on the interfacial performance between new and existing concrete after reinforcement， which has not been sufficiently investigated under this configuration. Nine sets of comparative experiments were conducted to analyze the key issue of shear resistance at the interface between new and existing concrete in the composite reinforcement scheme. It was found that under the circumferential reinforcement structure proposed in this paper， both ductility and failure bearing capacity were improved due to the Poisson effect in the later stage of the interface treatment component. At the same time， by applying the calculation formulas provided in existing reinforcement codes， the shear strength parameters for the new “serrated groove” configuration were introduced and evaluated.
- concrete interface shear resistance /
- serrated groove /
- steel-concrete composite structures /
- composite reinforcement

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参考文献(22)

[1]	MAVLONOV R A，ERGASHEVA N E. Strengthening reinforced concrete members[J]. Symbol of Science，2015（3）:22-24.
[2]	赵强. 体外预应力法在梁式桥梁加固中的应用研究[D]. 昆明:昆明理工大学，2005.
[3]	BANU D，TARANU N. Traditional solutions for strengthening reinforced concrete slabs[J]. Bulletin of the Polytechnic Institute of Iasi，Construction and Architecture Section，2010，56（3），53.
[4]	FAKHARIFAR M，CHEN G，WU C，et al. Rapid repair of earthquake-damaged RC columns with prestressed steel jackets[J]. Journal of Bridge Engineering，2016，21（4），04015075.
[5]	陈兴帅，陈建川，陈曦. 桥梁的加固研究[J]. 江西建材，2018（4）:180，183.
[6]	袁力. 钢板-混凝土组合结构在刚架拱桥加固中应用研究[D]. 武汉:华中科技大学，2018.
[7]	TRUONG G T，KIM J C，CHOI K K. Seismic performance of reinforced concrete columns retrofitted by various methods[J]. Engineering Structures，2017，134:217-235.
[8]	THERMOU G E，KATAKALOS K，MANOS G. Concrete confinement with steel-reinforced grout jackets[J]. Materials and Structures，2015，48:1355-1376.
[9]	KENNEDY-KUIPER R C S，WAKJIRA T G，ALAM M S. Repair and retrofit of RC bridge piers with steel-reinforced grout jackets:an experimental investigation[J]. Journal of Bridge Engineering，2022，27（8），04022067.
[10]	TRUONG G T，KIM J C，CHOI K K. Seismic performance of reinforced concrete columns retrofitted by various methods[J]. Engineering Structures，2017，134:217-235.
[11]	KHALID HEIZA A N，MELEKA N，TAYEL M. state-of-the art review:Strengthening of reinforced concrete structures:different strengthening techniques[C] // Proceedings of the Sixth International Conference on Nano-Technology in Construction. Cairo，Egypt:2014，6（6-С）:22-24.
[12]	聂建国，陶慕轩，杨悦，等. 钢-混凝土组合梁和既有钢筋混凝土T梁的纵向连接方法:CN201210520319.8[P]. 2024-03-24.
[13]	聂鑫，庄亮东，仲轩阳. 一种混凝土桥加宽与加固的构造与其施工方法:CN202210364015.0[P]. 2024-03-24.
[14]	MATTOCK A H，HAWKINS N M. Shear transfer in reinforced concrete:recent research[J]. PCI Journal，1972，17（2）:55-75.
[15]	JOHAL L. Shear transfer in reinforced concrete with moment or tension acting across the shear plane[J]. PCI Journal，1975，20（4）:76-93.
[16]	史三元，崔立杰. 混凝土植筋群锚效应试验分析[J]. 煤炭工程，2014，46（1）:129-131.
[17]	American Association of State Highway and Transportation Officials（AASHTO）. AA SHTO LRFD bridge design specifications 2020[S]. Washington，DC，USA:AASHTO，2020.
[18]	American Concrete Institute（ACI）. Building code requirements for structural concrete and commentary ACI 318-19:[S]. Farmington Hills，MI，USA:ACI，2019.
[19]	International Federation for Structural Concrete. Fib model code for concrete structures 2010[S]. Lausanne，Switzerland:International Federation for Structural Concrete（Fib），2013.
[20]	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，2010.
[21]	江志伟. 沟槽和植筋新旧混凝土界面抗剪性能试验研究[D]. 广州:广东工业大学，2014.
[22]	杨泽进. 岩石结构面粗糙度表征及其围压作用下剪切力学行为研究[D]. 太原:太原理工大学，2021.