摘要
为研究移动荷载作用下三跨钢混组合连续梁桥面铺装层响应,建立了一种三跨钢混组合连续梁模型,桥面铺装层采用沥青混合料黏弹属性,移动荷载采用DLOAD与UTRACLOAD子程序实现.结果表明,上面层、下面层、水泥混凝土层及钢板层的最大垂向挠度值比纵梁大17%.由于纵梁与横梁支撑,纵梁的最大垂向挠度比非纵梁小6.6%,横梁最大垂向挠度比非横梁小3.1%.剪力钉与混凝土全接触时的竖向挠度最大,黏结与接触共同作用时的竖向挠度次之,全黏结时的竖向挠度最小.桥面铺装层承受垂向压应力,上、下面层承受横向压应力,钢板层承受横向拉应力,上面层与水泥混凝土层承受纵向压应力,下面层既承受纵向压应力又承受纵向拉应力,钢板层承受纵向拉应力.
To study the dynamic response of the bridge deck pavement system of a three-span steel-concrete composite continuous beam under moving loads,a three-span steel-concrete composite continuous beam model is established.The bridge deck pavement layer uses the viscoelastic properties of the asphalt mixture.The moving load is implemented by the DLOAD and UTRACLOAD subroutines.The results show that the maximum vertical deflection of the upper layer,the lower layer,the cement concrete layer,and the steel layer is 17%larger than that of the longitudinal beam.Due to the support of the longitudinal beam and the beam,the maximum vertical deflection of the longitudinal beam is 6.6%smaller than that of the non-longitudinal beam,and the maximum vertical deflection of the transverse beam is 3.1%smaller than that of the non-transverse beam.The vertical deflection caused by full contact between shear pins and concrete is the maximum;the vertical deflection under the bonding and contact is in the middle;and that of full bonding is the minimum.The deck pavement layer is subjected to the vertical compressive stress.The upper layer and the lower layer are subjected to the transverse compressive stress.The steel sheet layer is subjected to the transverse tensile stress.The upper layer and the cement concrete layer are subjected to the longitudinal compressive stress.The lower layer is subjected to both the longitudinal compressive stress and the longitudinal tensile stress.The steel sheet layer is subjected to the longitudinal tensile stress.
作者
严战友
靳兆阳
赵晓林
陈恩利
王旭蕊
Yan Zhanyou;Jin Zhaoyang;Zhao Xiaolin;Chen Enli;Wang Xurui(State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2019年第6期1109-1115,共7页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金资助项目(111172183)
中央引导地方科技发展专项资助项目(18242219G)
关键词
钢混组合连续梁模型
移动荷载
桥面铺装系统
动态响应
steel-concrete composite continuous beam model
moving load
bridge deck pavement system
dynamic response
作者简介
严战友(1972-),男,博士生,副教授,yanzhanyou@163.com.
