| 高延性混凝土加固钢筋混凝土柱抗剪承载力计算 |
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| 引用本文： | 邓明科, 张阳玺, 胡红波. 高延性混凝土加固钢筋混凝土柱抗剪承载力计算[J]. 工程力学, 2018, 35(3): 159-166. DOI: 10.6052/j.issn.1000-4750.2016.11.0888 |
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| 作者姓名： | 邓明科 张阳玺 胡红波 |
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| 作者单位： | 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 |
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| 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） |
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| 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。
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| 关 键 词： | 高延性混凝土 钢筋混凝土柱 加固 桁架-拱模型 抗剪承载力 |
| 收稿时间： | 2016-11-17 |
| 修稿时间： | 2017-03-24 |
EXPERIMENTAL STUDY AND CALCULATION OF THE SHEAR CAPACITY OF RC COLUMNS STRENGTHENED WITH HIGH DUCTILE CONCRETE |
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| DENG Ming-ke, ZHANG Yang-xi, HU Hong-bo. EXPERIMENTAL STUDY AND CALCULATION OF THE SHEAR CAPACITY OF RC COLUMNS STRENGTHENED WITH HIGH DUCTILE CONCRETE[J]. Engineering Mechanics, 2018, 35(3): 159-166. DOI: 10.6052/j.issn.1000-4750.2016.11.0888 |
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| Authors: | DENG Ming-ke ZHANG Yang-xi HU Hong-bo |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | high ductile concrete reinforced concrete column strength enhancement truss-arch model shear capacity |
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