剪土环对筒型基础负压沉贯下沉过程中渗流场的影响研究  

The Inflence of the Loop of Shearing Soil to the Seepage Field for Bucket Foundation During Suction Penetration

作　　者：丁红岩[1] 张超[1] 王立国[1] 苏标[1] 

机构地区：[1]天津大学建筑工程学院土木工程系,天津300072

出　　处：《海洋技术》2005年第3期83-87,共5页Ocean Technology

基　　金：国家自然科学基金资助项目(50079016)

摘　　要：筒型基础沉放施工中,随着入土深度的增加,筒体所受的侧摩阻力越大,当达到一定程度时,将导致基础无法继续下沉。为了避免这种情况的发生,在实际的施工中可以在锚体上设置剪土环以减小侧摩阻力的影响。论文针对海上吸力锚基础这一新型海洋平台基础形式研究中面临的吸力锚负压沉贯下沉中设置剪土环及剪土环对其渗流场的影响这一问题,通过对吸力锚渗流场的有限元分析,运用有限元软件AN SY S对锚体周围土体渗流场进行建模分析,利用有限元计算的结果来分析剪土环对渗流场的影响。During the construction of bucket foundation by suction penetration, with the depth of penetration, the sides friction are increasing. When the side friction up to certain value, and the friction will prevent the penetrating of the foundation in advance. The loop of shearing soil installation will avoid the phenomena. The effect of the loop of shearing soil is reducing side friction and is the key problem during the process of suction penetration of bucket foundation in construction. The influence of the loop of shearing soil to seepage field is analysis by using the finite element software of ANSYS in this paper.

关 键 词：筒型基础 剪土环 有限元法 ANSYS 渗流场 

分 类 号：D357.3[政治法律—政治学] P75[政治法律—国际共产主义运动]