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| 海洋环境下锈裂钢筋混凝土构件截面抗弯刚度识别 | |
| 引用本文： | 吴瑾,吴胜兴,程吉昕.海洋环境下锈裂钢筋混凝土构件截面抗弯刚度识别[J].河海大学学报(自然科学版),2004,32(5):569-572. |
| 作者姓名： | 吴瑾 吴胜兴 程吉昕 |
| 作者单位： | 1. 南京航空航天大学土木工程系,江苏,南京,210016 2. 河海大学土木工程学院,江苏,南京,210098 3. 连云港大陆桥国际商务投资发展有限公司,江苏,连云港,222001 |
| 基金项目： | 国家自然科学基金资助项目(50079002) |
| 摘 要： | 钢筋混凝土结构锈裂后的构件截面刚度是表征锈裂损伤程度的重要指标．根据模态频率变化与弯曲刚度变化的关系，提出了锈裂钢筋混凝土结构构件截面抗弯刚度识别的方法，绘制锈裂损伤后抗弯刚度识别图，根据实测模态频率可以识别出锈裂钢筋混凝土构件抗弯刚度．通过弯曲试验实测锈裂构件抗弯刚度，结果与识别结果吻合较好． |
| 关 键 词： | 钢筋锈蚀 抗弯刚度 模态频率 识别 海洋环境 |
| 文章编号： | 1000-1980(2004)05-0569-04 |
| 修稿时间： | 2005/2/1 0:00:00 |
Identification of sectional flexural stiffness for corroded and cracked reinforced concrete components in marine environment |
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| WU Jin,WU Sheng-xing,CHENG Ji-xin.Identification of sectional flexural stiffness for corroded and cracked reinforced concrete components in marine environment[J].Journal of Hohai University (Natural Sciences ),2004,32(5):569-572. | |
| Authors: | WU Jin WU Sheng-xing CHENG Ji-xin |
| Institution: | WU Jin~1,WU Sheng-xing~2,CHENG Ji-xin~3 |
| Abstract: | The sectional flexural stiffness is the important index for assessment of the damage to corroded and cracked reinforced concrete components. In this paper, a method for identification of the sectional flexural stiffness of reinforced concrete components was proposed, and a corresponding diagram for identification was plotted based on the relationship between the variations of modal frequency and flexural stiffness, thus, the flexural stiffness of corroded and cracked reinforced concrete components could be identified according to the measured modal frequency. The flexural stiffness measured with flexural tests was in good agreement with the identified result. |
| Keywords: | reinforcement corrosion flexural stiffness modal frequency identification marine environment |
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