软土地基条件下大型圆筒海岸结构稳定性计算方法  

Stability Calculation Methods of Large Cylinder Structure in Coastal Soft Clay Foundation

作　　者：王元战[1] 华蕾娜[1] 祝振宇[1] 

机构地区：[1]天津大学建筑工程学院港口工程系,天津300072

出　　处：《岩土力学》2005年第1期41-45,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(批准号:50279027)

摘　　要：针对一工程发生破坏的实例,对软土地基条件下大型圆筒海岸结构的设计与计算方法进行了比较分析,并对波浪水流作用下软土特性参数的选取、泥面冲刷对结构稳定性的影响等进行了讨论。提出了反复荷载作用下软土的动力特性、水流作用下结构周围泥面的冲刷演变规律以及波浪作用下大型圆筒结构与软土的动力相互作用等,这都是软土地基条件下大型圆筒海岸结构工程应用亟待解决的关键问题。In the light of a failure project, the stability calculation methods for large cylinder structures in coastal soft clay foundation are compared, and the determination of design values of soft clay in the wave action and effects of foundation scour on the stability of large cylinder structures are discussed. It is shown that the stability calculation methods of the traditional gravity structures are unsuitable for (can not be used in) the stability analysis of the large cylinder structures in soft soil foundation. It is proposed that the dynamic behavior of soft clay in the action of circle load, the evolution of foundation in fluid scouring and dynamic interaction simulation of large cylinder structures and soft clay under the wave excitation should be the key problems to be solved in the practical application of large cylinder structures in coastal soft clay foundation.

关 键 词：软土地基 波浪作用 大型圆筒结构 稳定性 

分 类 号：U656.31[交通运输工程—港口、海岸及近海工程]