既有预应力混凝土空心板桥承载力的检测与评定
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摘要
针对目前既有预应力混凝土空心板桥承载能力评定方法的不足,结合工程实例阐述了对既有预应力混凝土空心板桥进行承载力评定的方法,提出了承载力评定的检测指标,介绍了检测内容、检测方法和检测结果。根据结构表观质量检查结果、材质状况检测结果和活载调查结果,引入承载能力恶化系数、截面折减系数和活载影响修正系数,分析了考虑截面损伤的抗力-荷载效应对比。结果表明,在考虑横向分布的情况下,所检测的试验板在荷载作用下,能够有效地保证结构的安全性和可靠性,并有一定的安全储备,较好地验证了规范方法的合理性和有效性,可为既有钢筋混凝土空心板桥的病害调查分析、承载能力技术状况评定和加固设计提供参考价值。
In view of the deficiency of load-bearing capacity evaluation method of existing prestressed concrete hollow slab,load-bearing capacity evaluation method was represented,inspection index was presented,and inspection content,method and result were introduced based on the example.According to structural apparent mass and material state inspection and live load investigation,load-bearing capacity depravation coefficient,section discount coefficient and live load redress coefficient were provided,comparison between resistance and load effect was analyzed considering section damage.The result shows that the test slab can assurance the safety and reliability of structure considering transverse distribution.It validates the rationality and effectivity of the method,which is useful for the bearing capacity evaluation of similar structure.
In view of the deficiency of load-bearing capacity evaluation method of existing prestressed concrete hollow slab,load-bearing capacity evaluation method was represented,inspection index was presented,and inspection content,method and result were introduced based on the example.According to structural apparent mass and material state inspection and live load investigation,load-bearing capacity depravation coefficient,section discount coefficient and live load redress coefficient were provided,comparison between resistance and load effect was analyzed considering section damage.The result shows that the test slab can assurance the safety and reliability of structure considering transverse distribution.It validates the rationality and effectivity of the method,which is useful for the bearing capacity evaluation of similar structure.
引文
[1]蔡明.公路旧桥承载力评估方法[J].桥梁建设,2005(4):69-78.CAI Ming.Methods for Evaluation of Load-carrying Capacity ofExisting Highway Bridges[J].Bridge Construction,2005(4):69-78.
[2]宗雪梅,胡大琳,郑勇.既有桥梁技术状况评价及检算系数Z1的确定[J].长安大学学报,2006,26(4):63-74.ZONG Xue-mei,HU Da-lin,ZHENG Yong.Evaluation ofTechnical State for Existed Bridge and Determination of Check-ing Coefficient Z1[J].Journal of Chang’an University,2006,26(4):63-74.
[3]宗周红,任伟新,郑振飞.既有桥梁承载能力评估方法[J].地震工程与工程振动,2005,25(5):147-152.ZONG Zhou-hong,REN Wei-xin,ZHENG Zhen-fei.Load-carrying Capacity Assessment Methods of Existing Bridges[J].Earthquake Engineering and Engineering Vibration,2005,25(5):147-152.
[4]交通部第二公路勘察设计院.公路旧桥承载能力鉴定方法[M].北京:人民交通出版社,1989.CCCC Second Highway Consultants Co.Ltd.Appraising Methodof Carry Capacity for Highway Existed Bridge[M].Beijing:China Communications Press,1989.
[5]公路桥梁承载能力检测评定规程(报批稿)[S].Specification for Inspection and Evaluation of Load-bearing Ca-pacity of Highway Bridge(draft)[S].
[6]赵卓,蒋晓东,徐爱敏.预应力空心板的混凝土耐久性检测诊断[J].混凝土,2006(9):84-86.ZHAO Zhuo,JIANG Xiao-dong,XU Ai-min.Structural Dura-bility Inspection and Test of Used Pre-stressed Concrete HollowSlab[J].Concrete,2006(9):84-86.
[7]李宏志,赵卓,周洪文,等.碳纤维布加固旧桥预应力混凝土空心板的破坏荷载试验研究[J].河南科学,2006,24(5):733-736.LI Hong-zhi,ZHAO Zhuo,ZHOU Hong-wen,et al.Dest-ructive Test Research of CFS Reinforced Pre-stressed ConcreteHollow Slab[J].Henan Science,2006,24(5):733-736.
[8]JTG H11-2004,公路桥涵养护规范[S].JTG H11-2004,Code for Maintenance of Highway Bridges andCulverts[S].
[9]JTJ 023-85,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].JTJ 023-85,Specifications for Design of Reinforced Concreteand Prestressed Concrete Highway Bridges and Culverts[S].
[10]JTG D62-2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].JTG D62-2004,Specification for Design of Highway ReinforcedConcrete and Prestressed Concrete Bridges and Culverts[S].
[11]李宏志.受压区加固的旧桥预应力混凝土空心板的破坏荷载试验研究[J].河南科学,2006,24(4):574-577.LI Hong-zhi.Destructive Test Research of Reinforced Old Pre-stressed Concrete Hollow Slab[J].Henan Science,2006,24(4):574-577.
[2]宗雪梅,胡大琳,郑勇.既有桥梁技术状况评价及检算系数Z1的确定[J].长安大学学报,2006,26(4):63-74.ZONG Xue-mei,HU Da-lin,ZHENG Yong.Evaluation ofTechnical State for Existed Bridge and Determination of Check-ing Coefficient Z1[J].Journal of Chang’an University,2006,26(4):63-74.
[3]宗周红,任伟新,郑振飞.既有桥梁承载能力评估方法[J].地震工程与工程振动,2005,25(5):147-152.ZONG Zhou-hong,REN Wei-xin,ZHENG Zhen-fei.Load-carrying Capacity Assessment Methods of Existing Bridges[J].Earthquake Engineering and Engineering Vibration,2005,25(5):147-152.
[4]交通部第二公路勘察设计院.公路旧桥承载能力鉴定方法[M].北京:人民交通出版社,1989.CCCC Second Highway Consultants Co.Ltd.Appraising Methodof Carry Capacity for Highway Existed Bridge[M].Beijing:China Communications Press,1989.
[5]公路桥梁承载能力检测评定规程(报批稿)[S].Specification for Inspection and Evaluation of Load-bearing Ca-pacity of Highway Bridge(draft)[S].
[6]赵卓,蒋晓东,徐爱敏.预应力空心板的混凝土耐久性检测诊断[J].混凝土,2006(9):84-86.ZHAO Zhuo,JIANG Xiao-dong,XU Ai-min.Structural Dura-bility Inspection and Test of Used Pre-stressed Concrete HollowSlab[J].Concrete,2006(9):84-86.
[7]李宏志,赵卓,周洪文,等.碳纤维布加固旧桥预应力混凝土空心板的破坏荷载试验研究[J].河南科学,2006,24(5):733-736.LI Hong-zhi,ZHAO Zhuo,ZHOU Hong-wen,et al.Dest-ructive Test Research of CFS Reinforced Pre-stressed ConcreteHollow Slab[J].Henan Science,2006,24(5):733-736.
[8]JTG H11-2004,公路桥涵养护规范[S].JTG H11-2004,Code for Maintenance of Highway Bridges andCulverts[S].
[9]JTJ 023-85,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].JTJ 023-85,Specifications for Design of Reinforced Concreteand Prestressed Concrete Highway Bridges and Culverts[S].
[10]JTG D62-2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].JTG D62-2004,Specification for Design of Highway ReinforcedConcrete and Prestressed Concrete Bridges and Culverts[S].
[11]李宏志.受压区加固的旧桥预应力混凝土空心板的破坏荷载试验研究[J].河南科学,2006,24(4):574-577.LI Hong-zhi.Destructive Test Research of Reinforced Old Pre-stressed Concrete Hollow Slab[J].Henan Science,2006,24(4):574-577.
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