全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

既有RC拱肋不利车载效应随刚度损伤的变化

Keywords: 桥梁工程,RC拱肋,正交试验设计,不利车载,影响线,损伤

Full-Text   Cite this paper   Add to My Lib

Abstract:

为合理评估既有RC拱桥的承载能力,对损伤后拱肋最不利车载效应的变化问题进行了研究.采用机动法分析了拱肋区段刚度损伤后各典型截面弯矩和轴压力影响线的变化情况.在此基础上,按照现行公路桥涵设计通用规范中的车道荷载布置方式,并结合正交试验设计方法,研究了具有不同拱轴系数、矢跨比和跨度参数的无铰拱肋各典型截面的不利弯矩和轴压力值随损伤程度的变化规律.结果表明在无铰拱肋中各截面不利轴压力值随损伤程度的变化不大,而不利弯矩值则有较大变化;当损伤程度相同时,拱顶截面不利负弯矩对应的变化系数值最大,而拱脚截面不利正、负弯矩对应的变化系数值相当,且数值也较大.

References

[1]  SUO Q H,STEWART M G.Corrosion Cracking PredictionUpdating of Deteriorating RC Structures Using InspectionInformation [J].Reliability Engineering & SystemSafety,2009,94(8):1340-1348.
[2]  JTG/T J21-2011,公路桥梁承载能力检测评定技术规程[S].JTG/T J21-2011,Specification for Inspection and Evaluationof Load-bearing Capacity of Highway Bridges [S].
[3]  BROWNJOHN J M W,MOYO P,OMENZETTER P,etal.Assessment of Highway Bridge upgrading by DynamicTesting and Finite Element Model Updating [J].Journalof Bridge Engineering,2003,8(3):162-172.
[4]  罗娜,胡大琳,任少强.动测法评定钢筋砼拱桥承载力初探[J].重庆交通大学学报,2001,20(3):23-27.LUO Na,HU Dalin,REN Shaoqiang.Evaluation for Load Bearing Capacity of RC Arch Bridge with Dynamic Method[J].Journal of Chongqing Jiaotong Institute,2001,20(3):23-27.
[5]  张劲泉,李万恒,任红伟,等.公路旧桥承载力评定方法及工程实例[M].北京:人民交通出版社,2007.ZHANG Jinquan,LI Wanheng,REN Hongwei,et al.Evaluation Methods of Bearing Capacity and EngineeringApplications for Old Highway Bridges [M].Beijing:China Communications Press,2007.
[6]  张惠勤,吕长荣.刚架拱桥的检测与承载能力评定[J].山东交通学院学报,2009,17(2):56-62.ZHANG Huiqin,L Changrong.Detection and BearingCapacity Evaluation of Rigid Frame Arch Bridge [J].Journal of Shandong Jiaotong University,2009,17(2):56-62.
[7]  NOWAK A S,KIM S J,STANKIEWICZ P R.Analysis and Diagnostic Testing of a Bridge [J].Computers &Structures,2000,77(1):91-100.
[8]  贺国京,仝秋果,叶光华,等.已加固钢筋混凝土双曲拱桥承载能力评定[J].中南林业科技大学学报,2010,30(12):188-193.HE Guojing, TONG Qiuguo, YE Guanghua, et al.Assessment of Load Bearing Capacity for a StrengthenedConcrete Double-curved Arch Bridge [J].Journal ofCentral South University of Forestry & Technology,2010,30(12):188-193.
[9]  钟惠萍.既有钢筋混凝土桥梁构件耐久性试验与可靠性评估研究[D].长沙:长沙理工大学,2004.ZHONG Huiping.Research of Durability Experiment and Reliability Evaluation for Existing Reinforced ConcreteBridge Members [D].Changsha:Changsha University ofScience and Technology,2004.
[10]  ZHANG J R,LI C X,XU F H,et al.Test and Analysisfor Ultimate Load-carrying Capacity of Existing ReinforcedConcrete Arch Ribs [J].Journal of Bridge Engineering,2007,12(1):4-12.
[11]  蒋友宝,张建仁,刘扬.既有钢筋混凝土拱肋破坏过程中的内力变化[J].公路交通科技,2011,28(1):68 -73.JIANG Youbao, ZHANG Jianren, LIU Yang.InternalForce Changes in Failure Process of Existing ReinforcedConcrete Arch Ribs [J].Journal of Highway andTransportation Research and Development, 2011, 28(1):68-73.
[12]  JTG D60-2004,公路桥涵设计通用规范[S].JTG D60-2004,General Code for Design of HighwayBridges and Culverts [S].

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133