Experimental Research on External Prestressed Strengthening of
Reinforced Concrete Arch Bridge

doi:10.3969/j.issn.1674-0696.2013.01.03

Abstract

Abstract: In order to validate the feasibility of this experimental research on external prestressed strengthening of reinforced concrete arch bridge,the model test was completed. The vaults and arch feet were respectively strengthened,and then the changes of the strain and deflection in vaults,arch feet and the quarter section were analyzed. The results show that the bearing capacity of main arch ring can be better. The effect of reinforcement is significant,thus this method is feasible and reliable.

Key words: arch bridge, external prestress, reinforced concrete arch ring, reinforcement

摘要： 为验证体外预应力加固技术在钢筋混凝土主拱固应用的可行性,特进行了模型试验。分别对拱顶和拱脚进行加固,分析拱顶和拱脚及1 /4 截面在加固前后的应变和挠度的变化。结果表明: 主拱圈承载力得到提高,加固效果显著,此方法是可行、可靠的。

关键词: 拱桥, 体外预应力, 钢筋混凝土主拱圈, 加固

CLC Number:

U445.7⁺2

Ding Wei,Xiang Zhongfu. Experimental Research on External Prestressed Strengthening of Reinforced Concrete Arch Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(1): 9-13.

丁玮，向中富. 钢筋混凝土拱桥体外预应力加固试验[J]. 重庆交通大学学报（自然科学版）, 2013, 32(1): 9-13.

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Experimental Research on External Prestressed Strengthening of Reinforced Concrete Arch Bridge

钢筋混凝土拱桥体外预应力加固试验

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