泥皮厚度对桩墙组合锚碇承载性能的影响  

Influence of Mud Cake Thickness on the Bearing Capacity of Pile-anchor Composite Anchorage

作　　者：张浩 王大伟 付佰勇 木林隆[3,5] ZHANG Hao;WANG Da-wei;FU Bai-yong;MULin-long(Guangzhou Highway Engineering Group Co.Ltd.,Guangzhou 510000,China;Guangxi Transportation Investment Group Co.Ltd.,Nanning 528400,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;CCCC Highway Bridges National Engineering Research Centre Co.Ltd.,Beijing 100088,China;National Key Laboratory of Disaster Prevention and Reduction in Civil Engineering,Shanghai 200o92,China)

机构地区：[1]广州公路工程集团有限公司,广州市方510000 [2]广西交通投资集团有限公司,南宁市528400 [3]同济大学地下建筑与工程系,上海市200092 [4]中交公路长大桥建设国家工程研究中心有限公司,北京市100088 [5]土木工程防灾减灾全国重点实验室,上海市200092

出　　处：《公路》2024年第12期24-30,共7页Highway

基　　金：广西重点研发计划项目,项目编号桂科AB24010227。

摘　　要：泥皮是钻孔灌注桩施工过程中形成的一层土层,其厚度对桩基和地下连续墙基础的受荷载性能有显著影响。建立不同泥皮厚度的PLAXIS 3D模型,分析了泥皮厚度变化对桩墙组合锚碇内力和变形的影响。结果表明,泥皮厚度增加会显著影响结构的轴力、剪力和变形,尤其是槽段泥皮对结构整体性的削弱作用最为明显。研究结果为工程设计提供了理论支持,确保了结构设计的优化和工程的安全稳定。The impact of mud cake thickness on the bearing capacity of pile-wall composite anchorage is studied in the paper.Mud cake is a layer of soil formed during the construction process of bored piles,and its thickness significantly affects the load-bearing performance of pile foundations and diaphragm wall foundations.By establishing PLAXIS 3D models with different mud cake thicknesses,the effects of variations in mud cake thickness on the internal forces and deformations of the pile-wall composite anchorage are analyzed.The results show that increase in mud cake thickness significantly affects the axial force,shear force,and deformation of the structure,especially the weakening effect of the slot section mud cake on the overall integrity of the structure is the most evident.The research findings provide theoretical support for engineering design,ensuring the optimization of structural design and the safety and stability of the project.

关 键 词：桥梁工程 苍容浔江大桥 桩墙组合锚碇 泥皮厚度 桩墙组合结构 承载性能 

分 类 号：U443.24[建筑科学—桥梁与隧道工程] U441.4[交通运输工程—道路与铁道工程]