| 高强钢绞线网-聚合物砂浆复合面层技术加固火灾受损梁效果 |
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| 引用本文： | 宋波,黄世敏,陈奇辰,姚志华,姚秋来.高强钢绞线网-聚合物砂浆复合面层技术加固火灾受损梁效果[J].北京科技大学学报,2010,32(2). |
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| 作者姓名： | 宋波 黄世敏 陈奇辰 姚志华 姚秋来 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083
2. 中国建筑科学研究院工程抗震研究所,北京,100013 |
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| 基金项目： | 建设部研究开发项目(No.05-k4-18) |
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| 摘 要： | 通过对钢筋混凝土(RC)梁构件进行受损前后的受弯性能加固实验研究,分析了实验构件的破坏形态、裂缝分布、荷载-挠度曲线、钢绞线的应变曲线以及极限承载力等.研究表明,普通RC梁在一般过火条件下,其抗弯承载力和刚度有一定程度的降低,而采用高强钢绞线网-聚合物砂浆复合面层加固技术(SMPM)加固后,其加固效果显著,承载力较过火梁显著提高,可恢复到其过火前的水平.
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| 关 键 词： | 钢筋混凝土梁 钢绞线网 聚合物砂浆 抗弯加固 |
Effect of fire-damaged reinforced concrete beams strengthened with high-strength steel wire mesh and polymer mortar |
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| SONG Bo,HUANG Shi-min,CHEN Qi-chen,YAO Zhi-hua,YAO Qiu-lai.Effect of fire-damaged reinforced concrete beams strengthened with high-strength steel wire mesh and polymer mortar[J].Journal of University of Science and Technology Beijing,2010,32(2). |
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| Authors: | SONG Bo HUANG Shi-min CHEN Qi-chen YAO Zhi-hua YAO Qiu-lai |
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| Abstract: | The failure modes,fracture distributions,load-deflection curves,strain curves of strands and ultimate bearing capacities of reinforced concrete (RC) beams before and after being fire-damaged were analyzed on the basis of experimental studies on the bending properties of the beams.It is shown that the flexural capacity and stiffness of the fire-damaged beam reduce in some degree.After strengthening with high-strength steel wire mesh and polymer mortar (SMPM) the bearing capacity of the fire-damaged beam incr... |
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| Keywords: | reinforced concrete beams steel wire mesh polymer mortar flexural strengthening |
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