摘要
以汉江一桥工程为研究背景,利用大型有限元软件ANSYS对该在役桥梁的桩基开展数值模拟,研究河道冲刷深度对于桩基稳定性的影响。结果表明:当冲刷深度越大时,桩身的轴力会变大,桩侧摩阻力会逐渐减小,冲刷后的桩侧摩阻力由冲刷线以下部分来提供,桩基的极限承载力随冲刷深度的增加而减小;提出在役内河桥梁桩基的防护措施,对在役桥梁的设计和维护提供参考。
Based on the Hanjiang Bridge project,the pile foundation of the bridge in service is numerically simulated by ANSYS and the influence of river scour depth on the stability of pile foundation is studied.The results show that the axial force of pile will increase and the lateral friction resistance of pile will gradually decrease when the scour depth increases.The lateral friction resistance after scour is provided by the part below the scour line,and the ultimate bearing capacity of pile foundation decreases with the increase of scour depth.The protection measures of pile foundation of in-service inland river bridges are put forward,which can provide reference for the design and maintenance of in-service bridges.
作者
李文斌
胡裕成
张乔
米江川
陈明涛
宋丹
李超
LI Wenbin;HU Yucheng;ZHANG Qiao;MI Jiangchuan;CHEN Mingtao;SONG Dan;LI Chao(Ankang Highway Bureau,Ankang 725000,Shaanxi,China;The Engineering Design Academy of Chang'an University Co.,Ltd.,Xi'an 710064,China)
出处
《路基工程》
2025年第4期93-97,共5页
Subgrade Engineering
基金
陕西省交通运输厅科技项目(22-24K)
安康市工业科技攻关项目(AK2022-GY-12)。
关键词
桥梁桩基
水流冲刷
冲刷侵蚀
桩基稳定性
数值模拟
bridge pile foundation
current scour
scour erosion
stability of pile foundation
numerical simulation
