摘要
针对目前水下地基施工现场土体强度精密测量的难度大、影响因素多等问题,分析水下地基成桩—固结过程,通过多阶段欧拉-拉格朗日技术构建有限元数值模型。结果表明,水下地基的成桩过程中对黏土体的挤压作用导致了大量的沉桩效果,地表最大抬升约为R。在固结90 d以后,黏土体的不排水性抗剪强度增加很快,可达原强度的1.3倍。
In view of the difficulty of precise soil strength measurement in underwater foundation construction site and many influencing factors,the process of pile-consolidation of underwater foundation was analyzed,and a finite element numerical model was constructed by multi-stage Euler-Lagrange technique.The results show that in the process of pile formation of underwater foundation,the extrusion of clay leads to a large amount of pile driving effect,and the maximum surface lift is about R.After 90 days of consolidation,the non-drainage shear strength of the clay increases rapidly and can reach 1.3 times of the original strength.
作者
刘云峰
蒋勇波
吴敬斐
LIU Yun-feng;JIANG Yong-bo;WU Jing-fei(The Third Construction Engineering Company Ltd.of China Construction Second Engineering Bureau,Beijing 100070,China)
出处
《工程建设与设计》
2024年第18期10-12,共3页
Construction & Design for Engineering
关键词
水下地基
黏土体
力学性质
有限元分析
underwater foundation
clay soil
mechanical property
finite element analysis
作者简介
刘云峰(1969-),男,河北唐山人,高级工程师,从事建筑施工技术研究。
