波形腹板连续刚构桥抗震性能研究
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摘要
通过Midas对某波形腹板连续刚构桥建立有限元模型,用反应谱方法进行地震反应分析,并与普通混凝土腹板连续刚构进行对比。分析结果表明:同等跨径的波形腹板连续刚构桥的自重要比普通混凝土连续刚构桥小70%左右;普通混凝土连续刚构桥自振频率略大于波形腹板连续刚构桥;在地震荷载作用下,所有控制截面的横向弯矩纵向弯矩和扭矩,混凝土箱梁均大于波形腹板箱梁,平均相差150%以上。
The seismic performance of continuous rigid frame bridge with corrugated steel web is analyzed through making finite element model with Midas,and using the response spectrum method for seismic response analysis and comparison with ordinary concrete box beam bridge.The results show that the equal span continuous rigid frame bridge small 70%,ordinary concrete continuous rigid frame bridge in frequency slightly larger than the corrugated steel webs continuous rigid frame bridge,under seismic loads,the transverse moment of the control section of the longitudinal bending moment and torque,the concrete box girder is greater than the corrugated steel webs,with an average difference of more than 150%.
引文
[1]张长青,安永日,安里鹏.波形腹板连续刚构桥的地震响应分析[J].桥梁建设,2011(3):17-21.
    [2]陈礼榕.大跨矮墩连续刚构地震响应分析[J].四川建筑,2010(3):122-123.
    [3]尹海军,李子青,郭琦,等.大跨高墩连续刚构桥动力特性研究[J].西安建筑科技大学学报:自然科学版,2010(5):663.
    [4]吴文清,叶见曙,万水,等.波形腹板-混凝土组合箱梁截面变形的拟平截面假定及其应用研究[J].工程力学,2005,22(5):177-178.

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