摘要
近年来随着城市的不断扩张,交通道路设施的建设发展迅速,当交通线路要穿过沟谷陡坡时,会形成大量的高架桥嵌入高填方边坡坡面。运用Midas GTS三维数值模拟计算软件模拟高填方边坡及嵌入其中的桥梁桩基工程,探究高填方边坡中土工格栅布置间距、桥桩在边坡的位置以及桥梁承受不同交通荷载对高填方边坡稳定性及桥桩受力变形的影响,结果表明:桥梁桩基础有利于提升边坡的稳定性;当桥面所受交通荷载和土石混合料中的土工格栅间隔越大,则桥桩和抗滑桩的位移越大,其变化对高填方边坡稳定性均影响不大;当桥桩越往靠近抗滑桩方向横移,则会使得抗滑桩及桥桩的位移急剧增加,并且桥桩的位置会影响滑裂面的形状。以实际工程作为依托,再结合监测数据进行进一步的对比印证分析的合理性,研究成果可为以后相关地质条件开展的边坡工程提供参考。
In recent years,with the continuous expansion of the city,the construction of traffic road facilities develops rapidly.When the line crosses valleys and steep slopes,a large number of viaducts will be formed and embedded in the slope of high fill.Midas GTS three-dimensional numerical simulation calculation software is used to simulate the high fill slope and the bridge pile foundation embedded in it.The spacing of geotechnical grilles in the high fill slope,the position of bridge piles on the slope and the influence of different traffic loads on the stability of high fill slope and the stress and deformation of bridge piles are explored.The results show that the bridge pile foundation is conducive to improving the stability of the slope.The larger the spacing between the traffic load on the bridge deck and the geotechnical grille in the earth-rock mixture,the larger the displacement of the bridge pile and anti-sliding pile,and the smaller the influence of the change on the stability of the high fill slope.The displacement of anti-sliding piles and bridge piles will increase dramatically when the bridge piles move closer to the anti-sliding piles,and the position of the bridge piles will affect the shape of the sliding surface.Relying on actual project and combining monitoring data,the rationality of empirical analysis is verified by further comparison.The research results can provide reference for slope engineering in the future under relevant geological conditions.
作者
童艳光
蔡增蛟
张堃
梁松鸿
刘文召
黎森宇
TONG Yanguang;CAI Zengjiao;ZHANG Kun;LIANG Songhong;LIU Wenzhao;LI Senyu(GZEPI Huacheng Environmental Protection Energy Co.,Ltd.,Guangzhou 510830,China;China Construction First Group Corporation Limited,Beijing 100161,China;Faculty of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《广东土木与建筑》
2023年第3期36-41,共6页
Guangdong Architecture Civil Engineering
关键词
桥梁桩基
边坡稳定性
位移变化
Midas
GTS
数值模拟
bridge pile foundation
slope stability
displacement variation
Midas GTS
numerical simulation
