纤维编织网增强混凝土侧面加固偏压短柱试验研究

发布时间：2018-05-14 00:00

本文选题：纤维编织网增强混凝土(TRC) + 偏心距　；参考：《工程力学》2014年03期

【摘要】：纤维编织网增强混凝土具有耐腐蚀、耐高温、限裂效果好、施工便捷、几乎不增加结构尺寸等突出性能而逐渐成为近期研究的热点。开展TRC侧面加固偏压短柱试验,探讨偏心距、前期受力历史和纤维编织网用量对加固效果的影响。试验结果表明:TRC侧面加固方法适合于大偏心受压结构,偏心距越大,增强效果越明显;结构前期受力历史对加固效果影响非常明显,随着前期历史载荷的增大,加固效果明显减弱;提高纤维编织网用量在一定程度上可以增强加固效果,但增强幅度随用量的增加呈现出减弱趋势。在室内试验与相关研究成果的基础上,提出了纤维编织增强混凝土侧面加固偏压短柱极限承载力计算方法,计算值与试验值吻合较好。
[Abstract]:Fiber woven mesh reinforced concrete has become the focus of recent research due to its excellent corrosion resistance, high temperature resistance, good crack limiting effect, convenient construction and almost no increase in structure size. The influence of eccentricity, the history of preloading and the amount of fiber woven net on the reinforcement effect was investigated by the experiment of TRC side reinforcement of short columns with bias compression. The experimental results show that the WTRC side reinforcement method is suitable for large eccentric compression structures, and the greater the eccentric distance, the more obvious the reinforcement effect is, and the early loading history of the structure has an obvious effect on the reinforcement effect, and with the increase of the historical load in the early stage, The reinforcement effect is obviously weakened and the reinforcement effect can be enhanced to a certain extent by increasing the amount of fiber woven net, but the strengthening range shows a weakening trend with the increase of the amount of fiber weaving net. On the basis of indoor tests and related research results, a calculation method for the ultimate bearing capacity of short columns with eccentric compression strengthened by fiber braided reinforced concrete is proposed. The calculated values are in good agreement with the experimental values.
【作者单位】：同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
【基金】：国家重点基础研究发展规划(973)项目(2011CB013800) 长江学者和创新团队发展计划项目(IRT1029) 国家自然科学基金项目(41072206) 贵州省交通厅科技项目(2010-122-010,2010-122-019)
【分类号】：TU377

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