喷射高性能水泥复合混凝土加固石拱桥试验研究

发布时间：2018-03-11 20:26

本文选题：高性能水泥复合混凝土　切入点：加固　出处：《湖南大学学报(自然科学版)》2014年09期 　论文类型：期刊论文

【摘要】：通过1座未加固石拱桥模型与1座带载喷射高性能水泥复合混凝土加固石拱桥模型的破坏实验,研究了喷射高性能水泥复合混凝土加固石拱桥的加固效果及加固计算方法.试验结果表明,在石拱桥模型达到破坏荷载70%时持载喷射60mm厚高性能水泥复合混凝土加固,石拱桥模型承载力提高幅度为25%.喷射高性能水泥复合混凝土加固石拱桥能有效提高其承载力,改善其脆性破坏的性质,是一种经济有效的石拱桥加固方法.文中所用的加固后石拱桥承载力计算方法的计算结果与实验结果吻合良好,可供工程加固设计参考使用.
[Abstract]:The failure test of a stone arch bridge model with unstrengthened stone arch bridge and a stone arch bridge reinforced with loaded sprayed high performance cement composite concrete was carried out. The reinforcement effect and calculation method of stone arch bridge strengthened by shotcrete high performance cement composite concrete are studied. The experimental results show that when the failure load of stone arch bridge reaches 70, the concrete reinforced by shotcrete 60mm thick and high performance composite concrete is strengthened. The bearing capacity of stone arch bridge model is increased by 25%. Shotcrete high performance cement composite concrete can effectively improve the bearing capacity of stone arch bridge and improve its brittle failure property. It is an economical and effective method for strengthening stone arch bridge. The calculation results of the bearing capacity of the reinforced stone arch bridge are in good agreement with the experimental results, which can be used as a reference for the reinforcement design of engineering.
【作者单位】：湖南大学土木工程学院;
【基金】：国家“十二五”科技支撑计划项目(2011BAJ08B02)
【分类号】：U445.72

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