国省干线公路桥梁预防性养护技术及病害分析——以镇江市为例
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摘要
为推进国省干线公路桥梁预防性养护技术的应用,基于江苏省镇江市主要国省干线公路桥梁现场检测情况,开展关于桥梁数量、桥型、技术状况和病害的统计分析,建立了桥梁技术状况随时间的历史变化模型。采用分层评定法确定了预防性养护的病害范畴。研究结果表明:镇江市主要国省干线公路桥梁目前的技术状况为开展预防性养护提供了良好的基础;以非线性指数型退化模型作为预测桥梁结构寿命的依据,具有较好的适用性;将预防性养护的对象确定为技术状况为Ⅰ类和Ⅱ类的桥梁,进而可以确定属于预防性养护范畴的病害类型。
In order to promote the application of preventive maintenance technology. Firstly, based on the field test of national and provincial trunk highway bridges in Zhenjiang, the statistical analysis of the number, type, technical state and diseases of bridges are carried out. Then, a historical model of bridge technology over time is established to predict the future of bridge technology. Finally, the preventive maintenance disease category is determined. The results show that the present status of national and provincial trunk highway bridges in Zhenjiang provide a good foundation for preventive maintenance. The nonlinear exponential degradation model can be used for the prediction of bridge structure life conveniently. If the objects of preventive maintenance of bridges are defined as bridges with classⅠ or classⅡ, the diseases belonging to preventive maintenance can be identified.
In order to promote the application of preventive maintenance technology. Firstly, based on the field test of national and provincial trunk highway bridges in Zhenjiang, the statistical analysis of the number, type, technical state and diseases of bridges are carried out. Then, a historical model of bridge technology over time is established to predict the future of bridge technology. Finally, the preventive maintenance disease category is determined. The results show that the present status of national and provincial trunk highway bridges in Zhenjiang provide a good foundation for preventive maintenance. The nonlinear exponential degradation model can be used for the prediction of bridge structure life conveniently. If the objects of preventive maintenance of bridges are defined as bridges with classⅠ or classⅡ, the diseases belonging to preventive maintenance can be identified.
引文
[1] 刘月莲,林有贵.公路桥梁养护管理与维修加固[M].北京:人民交通出版社,2009.
[2] 郭丽芳.高速公路桥梁预防性养护[J].交通世界,2010(12):243-244.
[3] 中交公路规划设计院有限公司.公路桥涵设计通用规范:JTG D60—2015[S].北京:人民交通出版社,2015.
[4] 交通运输部公路科学研究院.公路桥梁技术状况评定标准:JTG/T H21—2011[S].北京:人民交通出版社,2011.
[5] 章金桥,叶国弘.基于时变可靠度衰变预测的普通钢筋混凝土桥梁预防性养护模型研究[J].交通科技,2016,42(1):51-54.
[6] 彭建新.基于寿命周期成本的桥梁全寿命设计方法研究[D].长沙:湖南大学,2009.
[2] 郭丽芳.高速公路桥梁预防性养护[J].交通世界,2010(12):243-244.
[3] 中交公路规划设计院有限公司.公路桥涵设计通用规范:JTG D60—2015[S].北京:人民交通出版社,2015.
[4] 交通运输部公路科学研究院.公路桥梁技术状况评定标准:JTG/T H21—2011[S].北京:人民交通出版社,2011.
[5] 章金桥,叶国弘.基于时变可靠度衰变预测的普通钢筋混凝土桥梁预防性养护模型研究[J].交通科技,2016,42(1):51-54.
[6] 彭建新.基于寿命周期成本的桥梁全寿命设计方法研究[D].长沙:湖南大学,2009.