钢桥面沥青混凝土铺装层静力响应研究-《建筑科学与工程学报》

文章信息/Info

Author(s):: BAO Long-sheng, XIE De-pu, QI Lin; School of Transportation Engineering, Shenyang Jianzhu University

摘要:: 为了精确分析复杂应力对钢桥面铺装的影响，以辽宁沈阳外环后丁香大桥为研究对象，结合项目所在区域的气候特点、交通条件，考虑钢桥面铺装层的层位功能，选择适宜的铺装材料，同时利用ABAQUS有限元程序建立后丁香大桥四号桥全桥有限元模型，对钢桥面沥青混凝土铺装层的静力响应进行分析。结果表明：全桥最不利荷载位置纵桥向出现在1号桥墩处，横桥向出现在外侧腹板位置；轮胎荷载作用下，RA05层和SMA13层拉应力及剪应力的最大值均出现在双轮组荷载对称作用纵向U肋边缘位置；RA05层最大横桥向剪应力出现在跨中，其余均出现在桥墩位置。

Abstract:: In order to accurately analyze the effect of complex stress on steel deck pavement, taking the Houdingxiang bridge on outer ring of Shenyang, Liaoning, as study object, combining the regional climatic characteristics, traffic conditions, and considering the function layer of steel deck pavement, pavement material suitable, the whole bridge finite element model of the No.4 Houdingxiang bridge was built using ABAQUS finite element program. The static response of steel deck asphalt concrete pavement was analyzed. The results show that for the most unfavorable position of global load, longitudinal position appears on pier 1, cross bridge position appears on external web position. Under tire load, maximum tensile stress and maximum shear stress of RA05 layer and SMA13 layer all appear in the load symmetry double wheel longitudinal Urib edge position. The maximum transverse shear stress of RA05 layer appears in midspan, and others appear in the pier position.