|Table of Contents|

Research on Structural Performance and Design Indices of FRP Footbridges(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2011年03期
Page:
14-22
Research Field:
Publishing date:
2011-09-20

Info

Title:
Research on Structural Performance and Design Indices of FRP Footbridges
Author(s):
FENG Peng;  JIN Fei-fei;  YE Lie-ping
Department of Civil Engineering, Tsinghua University, Beijing 100084, China
Keywords:
FRP footbridge;  comfort;  acceleration;  crouching excitation load;  maximum deflection;  structural performance
PACS:
U443.31
DOI:
-
Abstract:
A tentative FRP cable-stayed footbridge was investigated, in which the design method and design indices of FRP footbridges were studied. Firstly, the analysis of mechanical properties of the FRP footbridge made of large section industrialization pultruded profiles was carried out. It was found that FRP footbridge had the high loading capacity, while the deformation and the vibration comfort were the main controlling parameters for structural design. Furthermore, based on summarizing the deformation limits of the footbridge in domestic and international codes and considering the finite element analysis and the field measurement results, the deflection limit of 1/500 span length for FRP footbridge was proposed. The indices for the pedestrian vibration comfort requirements were also summarized, and the frequency limit, acceleration limit and excitation load were analyzed. Considering the finite element analysis and the field measurement results, it was concluded that the acceleration should be the controlling indicator, and simplified excitation load model and calculation method for acceleration were proposed. After reviewing the variety of damping ratio of real bridge in literature, the damping ratio of FRP footbridge was suggested to take as 0.008 for single component and 0.02 for multi-component structures. Based on the proposed design indices above, the limit span of continuous beam FRP footbridge and cable-stayed FRP footbridge were analyzed. For the cable-stayed FRP footbridge, the results of finite element analysis and field measurement showed that it could not meet the designing requirements. Hence, the improvement of overlaying a concrete layer was proposed. After it, the behaviors of the FRP footbridge met the requirements. All these works made out the design approach and the design indices for FRP footbridges, which were proved to be practical and reasonable through the actual FRP footbridge.

References:

[1] 叶列平,冯 鹏.FRP在工程结构中的应用与发展[J].土木工程学报,2006,39(3):24-36.YE Lie-ping,FENG Peng.Applications and Development of Fiber-reinforced Polymer in Engineering Structures[J].China Civil Engineering Journal,2006,39(3):24-36.
[2]ACMA.Global FRP Use in Bridge Applications[R].New York:ACMA,2004.
[3]冯 鹏,叶列平,金飞飞,等.FRP桥梁结构的受力性能与设计方法[J].工业建筑,2009,39(增):23-30.FENG Peng,YE Lie-ping,JIN Fei-fei,et al.Mechan-ical Behaviors and Design Methods of FRP Bridge Structures[J].Industrial Construction,2009,39(S):23-30.
[4]汤国栋.玻璃钢斜拉桥研究与实践[J].重庆交通学院学报,1987,16(3):1-12.TANG Guo-dong.The Analytical and Experimental Work of GRP Cable-stayed Pedestrian Bridge[J].Journal of Chongqing Jiaotong University,1987,16(3):1-12.
[5]吕志涛,梅葵花.国内首座CFRP索斜拉桥的研究[J].土木工程学报,2007,40(1):54-59.LU Zhi-tao,MEI Kui-hua.First Application of CFRP Cables for a Cable-stayed Bridge in China[J].China Civil Engineering Journal,2007,40(1):54-59.
[6]冯 鹏.新型FRP空心桥面板的设计开发与受力性能研究[D].北京:清华大学,2004.FENG Peng.Development and Study on an Innovative FRP Bridge Deck[D].Beijing:Tsinghua University,2004.
[7]冯 鹏,叶列平.外部纤维缠绕增强FRP桥面板受力性能试验研究[J].土木工程学报,2009,42(9):61-67.FENG Peng,YE Lie-ping.Experimental Study on Exterior Filament-wound Strengthening Fiber-reinforced Polymer Bridge Decks[J].China Civil Engineering Journal,2009,42(9):61-67.
[8]朱坤宁,万 水,刘玉擎.FRP桥面板静载试验研究及分析[J].工程力学,2009,26(增2):618-622.ZHU Kun-ning,WAN Shui,LIU Yu-qing.Analysis and Experimental Study on Statically Loaded FRP Bridge Deck[J].Engineering Mechanics,2009,26(S2):618-622.
[9]李天虹.FRP-混凝土组合梁受力性能和设计方法研究[D].北京:清华大学,2007.LI Tian-hong.Study on Mechanical Performance and Design Method of FRP-concrete Hybrid Beams [D].Beijing:Tsinghua University,2007.
[10]王言磊.FRP-混凝土组合梁/桥面结构试验、分析与设计方法[D].哈尔滨:哈尔滨工业大学,2008.WANG Yan-lei.Experimental Investigation,Analysis and Design Methods for FRP-concrete Composite Beam/Bridge Superstructure Systems[D].Harbin:Harbin Institute of Technology,2008.
[11]谢 旭,朱越峰.CFRP拉索设计对大跨度斜拉桥力学特性的影响[J].工程力学,2007,24(11):113-120.XIE Xu,ZHU Yue-feng.Study on Behavior of Long-span CFRP Cable-stayed Bridges[J].Engineering Mechanics,2007,24(11):113-120.
[12]FENG P,YE L P,TENG J G.Large-span Woven Web Structure Made of Fiber-reinforced Polymer [J].Journal of Composites for Construction,2007,11(2):110-119.
[13]ZIVANOVIC S,PAVIC A,REYNOLDS P.Vibration Serviceability of Footbridges Under Human-induced Excitation:a Literature Review[J].Journal of Sound and Vibration,2005,279(1/2):1-74.
[14]陈政清,华旭刚.人行天桥的振动与动力设计[M].北京:人民交通出版社,2009.CHEN Zheng-qing,HUA Xu-gang.Vibration and Dynamics Design of Footbridge[M].Beijing:China Communications Press,2009.
[15]CJJ 69—95,城市人行天桥与人行地道技术规范[S].CJJ 69—95,Technical Specifications of Urban Pedestrain Overcrossing and Underpass[S].
[16]SNIP 2.05.03-84,Construction Regulation.Bridges and Pipes[S].
[17]AASHTO-2004,LRED Bridge Design Specifications[S].
[18]AASHTO-2008,Guide Specifications for Design of FRP Pedestrian Bridges[S].
[19]CAN/CSA-S6-00,Canadian Highway Bridge Design Code[S].
[20]BS EN 1990:2002,Eurocode:Basis of Structural Design[S].
[21]ZHOU A,BAI Y,KELLER T.Dynamic Characteristics of Bridge Superstructures with FRP Composite Structural Elements[C]//HAMELIN P.Proceedings of the Third International Conference on Composites in Constructions.Lyon:ICCC,2005:971-978.
[22]FUJINO Y,PACHECO B M,NAKAMURA S,et al.Synchronization of Human Walking Observed During Lateral Vibration of a Congested Pedestrian Bridge[J].Earthquake Engineering & Structural Dynamics,1993,22(9):741-758.
[23]BS 5400-2:1978,Steel,Concrete and Composite Bridges—Part 2:Specification for Loads[S].
[24]WHEELER J E.Prediction and Control of Pedestrian-induced Vibration in Footbridge [J].Journal of Structural Division,1982,108(9):2045-2065.
[25]何 勇,金伟良,宋志刚.多跨人行天桥振动均方根加速度响应谱法[J].浙江大学学报:工学版,2008,42(1):48-53.HE Yong,JIN Wei-liang,SONG Zhi-gang.RMS Acceleration Response Spectrum Method of Multi-span Footbridge Under Pedestrian Excitation[J].Journal of Zhejiang University:Engineering Science,2008,42(1):48-53.
[26]KERR S C,BISHOP N W M.Human Induced Loading on Flexible Staircases[J].Engineering Structures,2001,23(1):37-45.
[27]ELLINGWOOD B,TALLIN A.Structural Serviceability:Floor Vibrations[J].Journal of Structural Engineering,1984,110(2):401-418.
[28]BACHMANN H.Vibration Upgrading of Gymnasia,Dance Halls and Footbridges[J].Structural Engineering International,1992,2(2):118-124.
[29]ANDRIACCHI T P,OGLE J A,GALANTE J O.Walking Speed as a Basis for Normal and Abnormal Gait Measurements[J].Journal of Biomechanics,1977,10(4):261-268.
[30]CAETANO E,CUNHA A,HOORPAH W,et al.Footbridge Vibration Design[M].Boca Raton:CRC Press,2009.
[31]CHANDRA R,SINGH S P,GUPTA K.Damping Studies in Fiber-reinforced Composites:a Review[J].Composite Structures,1999,46(1):41-51.
[32]ALURI S,JINKA C,GANGARAO H V S.Dynamic Response of Three Fiber Reinforced Polymer Composite Bridges[J].Journal of Bridge Engineering,2005,10(6):722-730.
[33]BAI Y,KELLER T.Modal Parameter Indentification for a GFRP Pedestrian Bridge[J].Composite Structures,2008,82(1):90-100.

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Last Update: 2011-09-20