钢管混凝土拱—钢腹板PC箱型系梁组合桥梁
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摘要
为减轻钢管混凝土拱梁组合体系桥的自重,提出了采用钢腹板(平钢腹板或波纹钢腹板)代替PC箱形系梁的混凝土腹板,从而形成钢腹板PC箱形系梁。以一座已建成的钢管混凝土拱梁组合体系桥为原桥,进行了钢腹板PC箱形系梁的试设计研究。结果表明,试设计桥由于减小了自重下的内力,降低了面内自振频率,从而改善了原桥的静力和抗震性能。此外,试设计桥经济性好且方便施工,说明钢管混凝土拱—钢腹板PC箱型系梁组合桥梁是可行的。
In order to reduce the self-weight of CFST arch-girder composite bridges,steel webs(corrugated or planar steel web) are introduced to replace concrete webs in the prestressed concrete tie beams.Taking a complete CFST arch-girder composite bridge as the prototype,a trial design of CFST arch-girder composite bridges with steel-web PC tie beam was carried out.The results indicate that the static and seismic performance of the trial design bridge can be improved due to the reduction of the internal force under dead load and the in-plane natural vibration frequency.In addition,the trial design bridge can be easily and economically built.CFST arch and steel-web prestressed concrete box girder composite bridges are feasible.
In order to reduce the self-weight of CFST arch-girder composite bridges,steel webs(corrugated or planar steel web) are introduced to replace concrete webs in the prestressed concrete tie beams.Taking a complete CFST arch-girder composite bridge as the prototype,a trial design of CFST arch-girder composite bridges with steel-web PC tie beam was carried out.The results indicate that the static and seismic performance of the trial design bridge can be improved due to the reduction of the internal force under dead load and the in-plane natural vibration frequency.In addition,the trial design bridge can be easily and economically built.CFST arch and steel-web prestressed concrete box girder composite bridges are feasible.
引文
[1]ELGAALY M,SESHADRI A,HAMILTON R W.Bending strengths of beams with corrugated webs[J].Journal of Structur-al Engineering,1997,123(6):772-782.
[2]ELGAALY M,HAMILTON R W,SESHADRI A.Shear strength of beams with corrugated webs[J].Journal of StructuralEngineering,1996,122(4):390-398.
[3]SAUSE R,ABBAS H H,DRIVER R G,et al.Fatigue life of girders with trapezoidal corrugated webs[J].Journal ofStructural Engineering,2006,132(7):1070-1078.
[4]王福敏.钢腹板预应力混凝土组合箱梁桥的发展及其应用现状[J].公路交通技术,1999(2):62-65.
[5]王圣保.波形钢腹板对箱梁预应力效率的影响[J].钢结构,2011,26(7):7-11.
[6]王博木,王玉杰,任大龙.波形钢腹板预应力混凝土组合梁桥的应用与发展[J].江苏技术师范学院学报,2011,17(4):47-77.
[7]陈宝春,黄卿维.波形钢腹板PC箱梁桥应用综述[J].公路,2005(7):45-53.
[8]孙虎平,高中俊,郭红军,等.波形钢腹板在桥梁结构中的应用与展望[J].城市道桥与防洪,2011(2):27-29.
[9]汤意.波形钢腹板预应力混凝土组合箱梁结构研究与应用[J].华北水利水电学院学报,2009,30(6):8-12.
[10]单成林.预应力混凝土组合箱梁桥波形钢腹板优化分析[J].武汉理工大学学报:交通科学与工程版,2011,35(4):809-812.
[11]冀伟,刘世忠,蔺鹏臻.波形钢腹板连续箱梁的动力特性[J].公路交通科技,2011,28(11):55-60.
[12]张长青,安永日,安里鹏.波形钢腹板连续刚构桥的地震响应分析[J].桥梁建设,2011(3):17-21.
[13]陈宝春,王远洋,黄卿维.波形钢腹板混凝土拱桥新桥型构思[J].世界桥梁,2006(4):10-14.
[14]韦建刚,黄卿维,陈宝春.波形钢腹板—混凝土组合箱拱面内受力全过程试验研究[J].工程力学,2011,28(5):90-96.
[15]蔡军伟,杨勇,周丕健,等.采用轻骨料硷的开孔钢板连接件受力性能[J].广西大学学报:自然科学版,2010,35(1):39-43.
[2]ELGAALY M,HAMILTON R W,SESHADRI A.Shear strength of beams with corrugated webs[J].Journal of StructuralEngineering,1996,122(4):390-398.
[3]SAUSE R,ABBAS H H,DRIVER R G,et al.Fatigue life of girders with trapezoidal corrugated webs[J].Journal ofStructural Engineering,2006,132(7):1070-1078.
[4]王福敏.钢腹板预应力混凝土组合箱梁桥的发展及其应用现状[J].公路交通技术,1999(2):62-65.
[5]王圣保.波形钢腹板对箱梁预应力效率的影响[J].钢结构,2011,26(7):7-11.
[6]王博木,王玉杰,任大龙.波形钢腹板预应力混凝土组合梁桥的应用与发展[J].江苏技术师范学院学报,2011,17(4):47-77.
[7]陈宝春,黄卿维.波形钢腹板PC箱梁桥应用综述[J].公路,2005(7):45-53.
[8]孙虎平,高中俊,郭红军,等.波形钢腹板在桥梁结构中的应用与展望[J].城市道桥与防洪,2011(2):27-29.
[9]汤意.波形钢腹板预应力混凝土组合箱梁结构研究与应用[J].华北水利水电学院学报,2009,30(6):8-12.
[10]单成林.预应力混凝土组合箱梁桥波形钢腹板优化分析[J].武汉理工大学学报:交通科学与工程版,2011,35(4):809-812.
[11]冀伟,刘世忠,蔺鹏臻.波形钢腹板连续箱梁的动力特性[J].公路交通科技,2011,28(11):55-60.
[12]张长青,安永日,安里鹏.波形钢腹板连续刚构桥的地震响应分析[J].桥梁建设,2011(3):17-21.
[13]陈宝春,王远洋,黄卿维.波形钢腹板混凝土拱桥新桥型构思[J].世界桥梁,2006(4):10-14.
[14]韦建刚,黄卿维,陈宝春.波形钢腹板—混凝土组合箱拱面内受力全过程试验研究[J].工程力学,2011,28(5):90-96.
[15]蔡军伟,杨勇,周丕健,等.采用轻骨料硷的开孔钢板连接件受力性能[J].广西大学学报:自然科学版,2010,35(1):39-43.
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