悬索桥锚碇沉井基础工作性状研究  

Study on Working Behaviors of the Anchorage Caisson Foundation of Suspension Bridge

作　　者：张溪[1] 李利军[1] 

机构地区：[1]江苏省交通科学研究院股份有限公司,江苏南京210017

出　　处：《现代交通技术》2014年第1期33-35,43,共4页Modern Transportation Technology

摘　　要：针对建造于软土地层中的锚碇沉井基础受力和变形情况复杂且无完善的计算理论的现状,文章以某跨江悬索桥锚碇沉井基础为工程背景,建立了三维实体有限元模型,系统地分析了锚碇沉井基础在多荷载工况下的工作性状,结果表明:锚碇沉井基础极限承载状态的主要控制因素是锚碇前端土体极限承载力,为新型锚碇沉井基础优化设计提供参考。For the complexity of stress and strain of the anchorage caisson foundation buih in soft soil layer, there are no perfect computational theories. Taking the anchorage caisson foundation of a suspension bridge as an engineering background, the 3D finite element simulation model is set up, and the working properties of the anchorage caisson foundation in variety loading conditions are analyzed systematically. The ultimate bearing capacity of soil in front of anchorage is the main control factor of the ultimate bearing state of anchorage caisson foundation. The results could provide references for structural optimization of the new anchorage caisson foundation.

关 键 词：悬索桥 沉井基础 有限单元法 地基承载力 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]