软土地基上新型港工结构及其相关问题研究  

New types of port engineering structures on soft ground and related problems

作　　者：王元战[1,2] 龙俞辰[1] 王禹迟[1] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]港口水工建筑技术国家工程实验室,天津300456

出　　处：《水道港口》2014年第4期404-414,共11页Journal of Waterway and Harbor

基　　金：国家自然科学基金资助项目(51279128)

摘　　要：在我国渤海湾沿岸、连云港以南苏北沿海、长江口、杭州湾、闽江口、韩江口、珠江口和海南岛西北部等很多沿海地区,广泛分布着软弱土地基。为适应深水、软土地基条件,近些年来研究开发了一些新型港口海岸工程结构,主要可分为轻型重力式结构、筒型基础结构、深水全直桩结构和导管-桩基结构等几类。论文给出了模拟这些结构力学特性的有限元数值模型,提出了结构极限承载力分析的加载系数法、土体强度折减法及相关简化计算方法,分析了各类结构的承载特性及其破坏模式,建议了有待进一步研究的问题。Soft soil grounds are widely distributed in China coastal regions, such as the coast of Bohai Bay, coastal areas of North Jiangsu in the south of Lianyungang, Yangtze River estuary, Hangzhou Bay, Minjiang Estuary, Hanjiang Estuary, Pearl River Estuary and Northwest Hainan Island, etc. In order to adapt to the conditions of deepwater and soft soil grounds, many new types of port and coastal engineering structures were developed in recent years, which could be divided into the types of light gravity type structure, cylindrical foundation structure, all-verti- cal-piled structure in deep-water and pipe wall-pile foundation structure. In this paper, the finite element numerical models were presented to simulate the mechanical properties of those structures. The loading factor method and the strength reduction method for analyzing the ultimate bearing capacity of structures were proposed, and the bearing characteristics and failure modes of those structures were investigated. Then the problems needed further study were suggested.

关 键 词：软土地基 新型结构 数值模型 承载特性 有待研究问题 

分 类 号：TV223[水利工程—水工结构工程] O242.1[理学—计算数学]