[1]邓江东,宗周红,黎雅乐,等.粘钢加固损伤混凝土箱型桥墩的抗震性能Ⅱ:动力响应数值分析[J].东南大学学报(自然科学版),2013,43(6):1280-1287.[doi:10.3969/j.issn.1001-0505.2013.06.028]
 Deng Jiangdong,Zong Zhouhong,Li Yale,et al.Anti-seismic properties of damaged concrete bridge piers with hollow cross-section strengthened with adhering steel platesⅡ: numerical analysis on seismic dynamic responses[J].Journal of Southeast University (Natural Science Edition),2013,43(6):1280-1287.[doi:10.3969/j.issn.1001-0505.2013.06.028]
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粘钢加固损伤混凝土箱型桥墩的抗震性能Ⅱ:动力响应数值分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第6期
页码:
1280-1287
栏目:
交通运输工程
出版日期:
2013-11-20

文章信息/Info

Title:
Anti-seismic properties of damaged concrete bridge piers with hollow cross-section strengthened with adhering steel platesⅡ: numerical analysis on seismic dynamic responses
作者:
邓江东1宗周红2黎雅乐2刘爱荣1
1广州大学土木工程学院, 广州 510006; 2东南大学土木工程学院, 南京 210096
Author(s):
Deng Jiangdong1 Zong Zhouhong2 Li Yale2 Liu Airong1
1School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
2School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
钢筋混凝土箱型桥墩 粘钢加固 地震动力响应 数值分析 初始损伤
Keywords:
reinforced concrete bridge piers with hollow box-section strengthening with adhering steel plates seismic dynamic response numerical analysis initial damage
分类号:
U443.22;TU375.3
DOI:
10.3969/j.issn.1001-0505.2013.06.028
摘要:
针对具有初始弯曲损伤的粘钢加固混凝土箱型桥墩,采用柔度法和纤维模型,进行了系统的地震动力响应数值模拟计算,分析了地震作用下加固桥墩的地震剪力、墩顶位移、剩余刚度等性能指标,并在拟静力试验的基础上综合研究其抗震加固力学行为.分析结果表明,地震荷载作用下地震中桥墩仍然发生加固钢板上缘产生塑性铰的破坏模式,与拟静力试验结果一致.加固前后桥墩抗震性能的对比结果表明,经粘钢加固形成新塑性铰的加固方式可有效增强桥墩的抗震能力.初始损伤程度、加固钢板厚度和长细比等对加固桥墩抗震安全度的影响较小.大轴压情况下,安全度快速降低.
Abstract:
The flexibility method and the fiber model were used to numerically simulate the earthquake dynamic response of the damaged concrete bridge piers with hollow cross-section strengthened with adhering steel plates. The performance index, such as the seismic forces at the piers bottom, pier top displacement and residual stiffness, were analyzed, and on the basis of model tests the seismic mechanics behaviors of the strengthened piers were comprehensively studied. The analysis results show that the failure modes of the strengthened bridge piers under the earthquake actions are also displayed as the occurrences of plastic hinge in the superior margin of the steel plates, which coincides with the pier model testing results. The comparison of the seismic performances before and after strengthening validates the effectiveness of the strengthening method with steel plates of making new plastic hinge. The effects of the initial damage degree, steel plate thickness and slenderness ratios on the seismic safety degrees of the bridge piers are small. However, when the axial compression ratio is large, the seismic safety degrees decrease quickly.

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相似文献/References:

[1]宗周红,邓江东,黎雅乐,等.粘钢加固损伤混凝土箱型桥墩的抗震性能Ⅰ:双向拟静力试验[J].东南大学学报(自然科学版),2013,43(5):944.[doi:10.3969/j.issn.1001-0505.2013.05.008]
 Zong Zhouhong,Deng Jiangdong,Li Yale,et al.Anti-seismic properties of damaged concrete bridge piers with hollow box-section strengthened with adhering steel plates Ⅰ: bi-directional quasi-static test[J].Journal of Southeast University (Natural Science Edition),2013,43(6):944.[doi:10.3969/j.issn.1001-0505.2013.05.008]

备注/Memo

备注/Memo:
作者简介: 邓江东(1979—),男,博士,副研究员;宗周红(联系人),男,博士,教授,博士生导师, zongzh@seu.edu.cn.
基金项目: “十二五”国家科技支撑计划资助项目(2011BAK02B03)、教育部博士点基金资助项目(20110092110011)、国家自然科学基金资助项目(51308137)、广东省科技计划资助项目(2012B040302005)、广州市科技计划重大专项资助项目(2011Y2-00006)、广州市属高校科研资助项目(10A005).
引文格式: 邓江东,宗周红,黎雅乐,等.粘钢加固损伤混凝土箱型桥墩的抗震性能Ⅱ:动力响应数值分析[J].东南大学学报:自然科学版,2013,43(6):1280-1287. [doi:10.3969/j.issn.1001-0505.2013.06.028]
更新日期/Last Update: 2013-11-20