河水环境下桥梁微型桩基坑防冲刷技术研究  

Research on Anti-scour Technology of Bridge Micro-pile Foundation Pit in River Water Environment

作　　者：邓洪龙 卜一鸣 刘江 梁斌 李文杰 DENG Honglong;BU Yiming;LIU Jiang;LIANG Bin;LI Wenjie(Second Highway Engineering Co.,Ltd.,International of CCCC,Xi an 710000,China;Civil Engineering School,Henan University of Science and Technology,Luoyang 471023,China)

机构地区：[1]中交二公局国际公司,陕西西安710000 [2]河南科技大学土木工程学院,河南洛阳471023

出　　处：《浙江水利水电学院学报》2023年第4期25-30,共6页Journal of Zhejiang University of Water Resources and Electric Power

基　　金：国家自然科学基金资助项目(U1604135);中交集团第二公路工程局重点科研项目(2020-2-15);河南省科技厅产学研合作项目(2015HNCXY011)。

摘　　要：依托格鲁吉亚E60高速公路Ubisa-Shorapani(F3)标段桥梁微型桩基坑工程,结合局部冲刷作用机理,计算富水环境下桥墩最大冲刷深度,并通过现场河床沉降监测进行分析验证,开展局部冲刷防护措施研究。研究结果表明:牺牲桩主动防护措施,抛石及碎石填充被动措施防护作用突出且持久,能有效减小河水冲刷影响,同时具有施工简便、环境影响小等优点。最终确定的冲刷防护方案在工程中得到成功运用,质量和效果均达到要求,可为其他同类或类似桥梁桩基础冲刷防护工程提供借鉴。Based on the micro-pile foundation pit project of Ubisa-Shorapani(F3)section bridge of E60 Expressway in Georgia,combined with the local scour mechanism,the maximum scour depth of bridge pier in water-rich environment was calculated,and the local scour protection measures were studied through the analysis and verification of the site riverbed settlement monitoring.The results show that the active protection measures of sacrificial pile and passive measures of riprap and gravel filling are effective and durable,which can effectively reduce the impact of river scour with the advantages of simple construction small environmental impact.The final scouring protection scheme is successfully applied in the project,the quality and effect meet the ideal requirements,providing reference for other similar bridge pile foundation protection projects.

关 键 词：河水环境 桥梁墩柱 微型桩基坑 冲刷机理 冲刷防护 

分 类 号：U443[建筑科学—桥梁与隧道工程]