沥水沟渡槽支撑结构承载力复核
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摘要
【目的】针对汶川大地震使沥水沟渡槽支撑结构遭受了不同程度的损坏,及其该渡槽已运行30多年存在不同程度老化的现状,对沥水沟渡槽承载力进行复核,为其加固或重建决策提供参考。【方法】利用有限元法对沥水沟渡槽支撑结构进行静力、动力分析,并通过现场检测混凝土强度,依据现行规范计算理论及方法对构件承载力进行复核。【结果】复核结果表明,该渡槽支撑结构在通过设计流量时承载力难以满足安全需要。【结论】为保证沥水沟渡槽安全运行,需对其进行加固或重建。
【Objective】 The bearing structure of lishui ditch aqueduct which was heavily damaged in Wenchuan Major earthquake has been running for more than 30 years.According to its current condition of damage and aging and demands of program decision,it is necessary to check its bearing capability and rationally evaluate its safety degree.The check results will supply theoretical reference for reinforcement or rebuilding.【Method】 With FEM,the structure static and dynamic analysis of lishui ditch aqueduct bracing structure was made,and using site detection concrete strength and according to current code,its bearing capability was checked.【Result】 The study shows that bearing capability of aqueduct bracing was not satisfactory under load case of passing through design flow.【Conclusion】 This aqueduct can be used after being reinforced or rebuilt.
【Objective】 The bearing structure of lishui ditch aqueduct which was heavily damaged in Wenchuan Major earthquake has been running for more than 30 years.According to its current condition of damage and aging and demands of program decision,it is necessary to check its bearing capability and rationally evaluate its safety degree.The check results will supply theoretical reference for reinforcement or rebuilding.【Method】 With FEM,the structure static and dynamic analysis of lishui ditch aqueduct bracing structure was made,and using site detection concrete strength and according to current code,its bearing capability was checked.【Result】 The study shows that bearing capability of aqueduct bracing was not satisfactory under load case of passing through design flow.【Conclusion】 This aqueduct can be used after being reinforced or rebuilt.
引文
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[3]李声平,彭翠玲,吴杰芳.大型U形双渡槽结构动力分析[J].长江科学院院报,2005,22(4):68-71.Li S P,Peng C L,Wu J F.Dynamic analysis on double Ushaped aqueduct structure[J].Journal of Yangtze River Scien-tific Research Institute,2005,22(4):68-71.(in Chinese)
[4]钟汉华,冷涛,郑玲.引丹灌区某渡槽数值计算分析及病险处理[J].长江科学院院报,2008,25(6):58-61.Zhong H H,Leng T,Zheng L.Numerical analysis and riskytreatment of some aqueduct of Danjiangkou reservoir[J].Jour-nal of Yangtze River Scientific Research Institute,2008,25(6):58-61.(in Chinese)
[5]陕西省建筑科学研究设计院.JGJ/T 23-2001回弹法检测混凝土强度技术规程[S].北京:中国建筑工业出版社,2001.Shaanxi Building Research&Design Institute.JGJ/T 23-2001Technical specification for inspection of concrete compressivestrength by rebound method[S].Beijing:China Architecture&Building Press,2001.(in Chinese)
[6]中国建筑科学研究院.CECS:02:2005超声回弹综合法检测混凝土强度技术规程[S].北京:中国建筑工业出版社,2005.China Academy of Building Research.CECS:02:2005 Techni-cal specification fordetecting strength of concrete by ultrasonic-reboundcombined method[S].Beijing:China Architecture&Building Press,2005.(in Chinese)
[7]沈在康.混凝土结构设计新规范应用讲评[M].北京:中国建筑工业出版社,1993.Shen Z K.Review on application of code for design of concretestructures[M].Beijing:China Architecture&Building Press,1993.(in Chinese)
[8]中华人民共和国城乡建设环境保护部.GBJ 10-89混凝土结构设计规范[S].北京:中国建筑工业出版社,1990.Ministry of Housing and Urban-Rural Development of the Peo-ple’s Republic of China.GBJ 10-89 Code for design of con-crete structures[S].Beijing:China Architecture&BuildingPress,1990.(in Chinese)
[9]电力工业部中南勘测设计研究院.DL 5077-1997水工建筑物荷载设计规范[S].北京:中国电力出版社,1998.Mid-South Design&Research Institute.DL 5077-1997 Speci-fications for load design of hydraulic structure[S].Beijing:China Electric Press,1998.(in Chinese)
[10]中华人民共和国城乡建设环境保护部.GBJ 9-87混凝土结构荷载设计规范[S].北京:中国建筑工业出版社,1996.Ministry of Housing and Urban-Rural Development of thePeople’s Republic of China.GBJ 9-87 Load code for designof concrete structures[S].Beijing:China Architecture&Building Press,1996.(in Chinese)
[11]中华人民共和国建设部.GB 50009-2001建筑结构荷载规范[S].北京:中国建筑工业出版社,2001.Ministry of Housing and Urban-Rural Development of thePeople’s Republic of China.GB 50009-2001 Load coad forthe design of building structure[S].Beijing:China Architec-ture&Building Press,2001.(in Chinese)
[12]同济大学.GBJ 135-90高耸结构设计规范[S].北京:中国建筑工业出版社,1996.Tongji University.GBJ 135-90 Code for design of toweringstructures[S].Beijing:China Architecture&Building Press,1996.(in Chinese)
[13]胡聿贤.GB 18306-2001《中国地震动参数区划图》宣贯教材[M].北京:中国标准出版社,2001.Hu Y X.Teaching materials for publicity and training of“Zo-nation Map of Earthquake Ground Motion Parameters of Chi-na(GB 18306-2001)”[M].Beijing:China Standard Press,2001.(in Chinese)
[14]西北勘测设计研究院.SL/T 191-96水工混凝土结构设计规范[S].北京:中国水利水电出版社,1998.Hydro China Xibei Engineering Corporation.SL/T 191-96Design code for hydraulic concrete structure[S].Beijing:Chi-na Water Power Press,1998.(in Chinese)
[15]中国水利水电科学研究院.SL 203-97水工建筑物抗震设计规范[S].北京:中国水利水电出版社,1998.China Institute of Water Resources and Hydropower Re-search.SL 203-97 Specifications for sesimus design of hy-draulic structure[S].Beijing:China Water Power Press,1998.(in Chinese)
[16]竺慧珠,陈德亮,管枫年.渡槽[M].北京:中国水利水电出版社,2005.Zhu H Z,Chen D L,Guan F N.Aqueduct[M].Beijing:ChinaWater Power Press,2005.(in Chinese)
[17]刘瑞.水工钢筋混凝土结构学[M].3版.北京:中国水利水电出版社,2008.Liu R.Hydraulic reinforced concrete design[M].3th ed.Bei-jing:China Water Power Press,2008.(in Chinese)
[18]周氐.水工钢筋混凝土结构学[M].2版.北京:水利电力出版社,1987.Zhou D.Hydraulic reinforced concrete design[M].2th ed.Beijing:China WaterPower Press,1987.(in Chinese)
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