基于“释能法”的拱桥加固受力性能
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摘要
为了研究"释能法"加固旧危石拱桥的加固效果,以某石拱桥为工程背景,展开有限元仿真分析,并结合现场载荷试验结果,对加固前后石拱桥的受力性能进行对比分析.研究表明,"释能法"加固后,拱桥拱脚截面负弯矩和拱顶截面的正弯矩均大幅度减小,改善了结构受力.采用"释能法"加固改造旧危石拱桥的方法是可行的.
In order to study the reinforcing effect of"energy release method:on old dangerous stone arch bridge,the finite element simulation analysis was carried out on a stone arch bridge,and the stress performance of the stone arch bridge before and after reinforcing was compared with the results of field load test.The results show that the negative moment of arch foot section and the positive moment of arch crown section of arch bridge are greatly reduced after the"energy release method"is used to reinforce the old dangerous stone arch bridge,which improves the structural stress.It is feasible to adopt the"energy release method:to reinforce and transform the old dangerous stone arch bridge.
In order to study the reinforcing effect of"energy release method:on old dangerous stone arch bridge,the finite element simulation analysis was carried out on a stone arch bridge,and the stress performance of the stone arch bridge before and after reinforcing was compared with the results of field load test.The results show that the negative moment of arch foot section and the positive moment of arch crown section of arch bridge are greatly reduced after the"energy release method"is used to reinforce the old dangerous stone arch bridge,which improves the structural stress.It is feasible to adopt the"energy release method:to reinforce and transform the old dangerous stone arch bridge.
引文
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[2]林晓锋,向中富,王旭军.常用石拱桥加固技术综述[J].山西建筑,2007,33(9):261-262.LIN X F,XIANG Z F,WANG X J.Summary of reinforcement technology of common stone arch bridges[J].Shanxi Architecture,2007,33(9):261-262.
[3]赵柏冬,张杨柳.粘贴碳纤维布法加固桥梁后病害分析[J].沈阳大学学报(自然科学版),2017,29(5):410-414.ZHAO B D,ZHANG Y L.Disease analysis of bridges strengthened with carbon fiber cloth[J].Journal of Shenyang University(Natural Science),2017,29(5):410-414.
[4]崔圣爱,蒙云,黄志堂.“释能法”在拱桥加固中的应用[J].铁道标准设计,2006(7):53-55.CUI S A,MENG Y,HUANG Z T.Application of“energy release method”in reinforcement of arch bridges[J].Railway Standard Design,2006(7):53-55.
[5]李治学.“释能法”提高拱桥承载力有限元计算分析[D].重庆:重庆交通大学,2009.LI Z X.Finite element analysis of improving the bearing capacity of arch bridge by“energy release method”[D].Chongqing:Chongqing Jiaotong University,2009.
[6]冯浩雄,姚胜泉.“释能法”加固钢筋混凝土拱桥结构性能研究[J].湖南城市学院学报(自然科学版),2010,19(3):5-7.FENG H X,YAO S Q.Research on structural performance of reinforced concrete arch bridge strengthened by“energy release method”[J].Journal of Hunan City College(Natural Science),2010,19(3):5-7.