预制桩芯桩帽结构承载性能及安装工艺试验研究  

Experimental study on bearing capacity and installation technology of prefabricated pile core and pile cap structure

作　　者：冯先导 刘聪聪 林红星[2,4] FENG Xiandao;LIU Congcong;LIN Hongxing(Ocean University of China,Qingdao 266100,China;CCCC Second Harbor Engineering Co.,Ltd.,Wuhan 430040,China;CCCC Wuhan Harbour Engineering Design and Research Co.,Ltd.,Wuhan 430040,China;Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure,Wuhan 430040,China)

机构地区：[1]中国海洋大学,山东青岛266100 [2]中交第二航务工程局有限公司,湖北武汉430040 [3]中交武汉港湾工程设计研究院有限公司,湖北武汉430040 [4]交通运输行业交通基础设施智能制造技术研发中心,湖北武汉430040

出　　处：《水运工程》2024年第11期215-220,共6页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2022YFB2603000);山东省重点研发计划项目(2021ZLGX04)。

摘　　要：高桩码头横、纵梁及面板等构件正逐渐进行装配式结构设计与施工,而处于水位变动区的桩芯桩帽结构仍以现浇形式为主,对工程整体工期、质量、安全的影响较大。针对预制一体化桩芯桩帽结构,通过模型试验研究其结构承载性能和安装工艺。结果表明,预制桩芯桩帽结构承载性能主要取决于灌浆料与钢管界面的黏结性能,且新结构的平均黏结强度高于传统现浇混凝土与钢管黏结强度及其相应的规范取值,具有良好的承载性能;研发的桩底气囊封堵装置可满足承载、密封性能的要求,埋入式灌浆过程中浆料流动性较好;预制桩芯桩帽结构及安装工艺在工程项目中具有良好的应用效果。The transverse,longitudinal beams and panels of high-pile wharf are gradually being designed and constructed in assembled structure.However,the pile core and pile cap structure in the water level fluctuation area are still mainly cast-in-place,which has a great impact on the overall construction period,quality and safety of the project.The bearing capacity and installation process of the prefabricated integrated pile core cap are studied by model experiment.The results show that the bearing capacity of the prefabricated pile core and cap structure mainly depends on the bonding performance between the grouting material and the steel pipe interface,and the average bonding strength of the new structure is higher than that of the traditional cast-in-place concrete and steel pipe bonding strength and its corresponding standard values,indicating good bearing performance.The developed airbag sealing device at pile bottom can meet the requirements of bearing and sealing performance,and the slurry has good fluidity during the embedded grouting process.The structure and installation process of prefabricated pile core and pile cap have good application effects in engineering projects.

关 键 词：装配式结构 预制桩芯桩帽 承载性能 安装工艺 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]