东非某离岸式码头桩基承载力研究  

Study on pile’s bearing capacity of offshore terminal in East Africa

作　　者：陈章楷 卢生军[1] CHEN Zhang-kai;LU Sheng-jun(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China)

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《水运工程》2021年第8期196-201,234,共7页Port & Waterway Engineering

摘　　要：东非某离岸式码头采用桩基结构,地质表层为较厚的软黏土,底层为风化泥岩,沉桩过程中桩尖无法贯入中风化泥岩层,桩基抗拔承载力存在风险。通过分析沉桩记录以及静载和动测试验,调整停锤标准,保证了后续施工的桩基满足承载力要求,并以试验方法研究强风化泥岩层的承载力。本工程在沉桩终锤要求和桩基承载力分析的经验上可供类似工程借鉴。An offshore terminal in East Africa adopts a high-piled structure. The surface soil layer is thick soft clay, and the bottom layer is weathered mudstone. The pile tip cannot penetrate the moderately weathered mudstone layer, so the bearing capacity of the pile foundation is at risk. Based on the analysis of the pile driving record and according to the results of the static load test and dynamic test, we adjust the driving finishing criterion to ensure that the subsequent pile foundation can meet the requirements on the bearing capacity. Furthermore, we study the bearing capacity of the highly weathered mudstone layer by the experiment. The research result may serve as a reference for similar projects in terms of the requirements of pile driving and the analysis of the pile foundation’s bearing capacity.

关 键 词：钢管桩 桩基承载力 高桩码头 贯入度 动测试验 静载试验 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]