高延性混凝土加固钢筋混凝土柱抗剪承载力计算

邓明科; 张阳玺; 胡红波

doi:10.6052/j.issn.1000-4750.2016.11.0888

高延性混凝土加固钢筋混凝土柱抗剪承载力计算

1.
西安建筑科技大学土木工程学院, 陕西, 西安 710055;
2.
广州建设工程质量安全监测中心有限公司, 广东, 广州 510440

基金项目: 国家自然科学基金项目（51578445）；西安市科技计划项目（CX13135-3）

详细信息

作者简介:
张阳玺(1990-),男,四川安岳人,博士生,主要从事结构加固研究(E-mail:18829588343@163.com);胡红波(1990-),男,江西新余人,助理工程师,工学硕士,主要从事结构检测加固研究(E-mail:2542679662@qq.com).

通讯作者:
邓明科(1979-),男,四川南充人,教授,工学博士,主要从事新材料与新型结构研究(E-mail:dengmingke@126.com).

中图分类号: TU375.3;TU317.1
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出版历程
- 收稿日期: 2016-11-16
- 修回日期: 2017-03-23
- 刊出日期: 2018-03-24

EXPERIMENTAL STUDY AND CALCULATION OF THE SHEAR CAPACITY OF RC COLUMNS STRENGTHENED WITH HIGH DUCTILE CONCRETE

1.
School of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an, Shaanxi 710055, China;
2.
Guangzhou Testing Center of Construction Quality and Safety Co., Ltd., Guangzhou, Guangdong 510440, China

摘要

摘要: 设计了8个RC柱，采用高延性混凝土（HDC）和灌浆料进行加固，通过低周反复荷载试验，主要研究其破坏形态、加固层作用机理及抗剪承载力计算方法。试验结果表明：HDC加固层可对核心区混凝土形成良好的约束作用，破坏形态由脆性破坏向延性破坏转变，试件承载力和变形能力都得到显著提高；对HDC加固柱的加固层作用机理进行了分析；基于桁架-拱模型对试件受力进行了分析，推导出加固柱的抗剪承载力计算方法，计算结果与试验值吻合较好。
- 高延性混凝土 /
- 钢筋混凝土柱 /
- 加固 /
- 桁架-拱模型 /
- 抗剪承载力
Abstract: Eight reinforced concrete columns were designed and strengthened with high ductile concrete (HDC) and grouting material. The failure modes, strength enhancement mechanics and shear capacities of the specimens were studied by static cyclic loading tests. The experimental results indicate that the HDC strengthening jacket could provide a good confinement for the core concrete. The failure mode is changed from brittle failure to ductile failure. The shear capacity and deformability of the specimens are significantly improved. Theoretical analysis is carried out on the strength enhancement mechanics for columns strengthened with HDC jackets. A calculation method of the shear capacity of strengthened columns is proposed based on the truss-arch model. The calculated results have good agreement with the test results.
- high ductile concrete /
- reinforced concrete column /
- strength enhancement /
- truss-arch model /
- shear capacity

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参考文献(19)

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