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工程力学  2014 

纤维编织网增强混凝土补强隧道衬砌力学性能研究

Keywords: 纤维编织增强混凝土,隧道衬砌,承载性能,参数分析,配网率

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Abstract:

纤维编织网增强混凝土(TRC)是一种新型高性能纤维增强水泥基复合材料,用它补强隧道衬砌可以有效地克服粘贴碳纤维布法的缺点。该文提出了纤维编织网增强混凝土补强隧道衬砌正截面受力全过程分析方法,并开展了验证试验。在此基础上,分析了衬砌截面偏心距、配网率、前期受力历史、钢筋和混凝土强度对纤维编织网增强混凝土补强隧道衬砌正截面承载性能的影响,最后探讨了纤维编织网补强隧道衬砌的破坏模式并给出了合理配网率区间。研究结果表明:衬砌截面偏心距、配网率和混凝土强度越大,前期受力历史和钢筋强度越小,补强效果越明显。

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