摘要
无铰拱的拱脚变位对拱桥内力影响显著,在厚覆盖层地基上选择合适的拱座形式以减小拱脚变位十分重要。介绍大宁河特大桥拱座设计的选型思路和概况,并对2个主要的拱座形式进行了力学分析,根据分析结果推荐了合理的拱座形式。
The deformation of arch springs of hingeless arch has significant influence on the internal forces of arch bridge and the selection of proper arch seats to be built on the thick over- burden layer ground is thus extremely important to reduce the deformation of the arch springs. In this paper, the considerations and general situations of arch seat type selection for design of Daning River Bridge are described, the mechanical analysis of two major types of the arch seats is made and consequently, the rational arch seat type is recommended in accordance with the results of the analysis.
出处
《世界桥梁》
北大核心
2007年第3期24-27,共4页
World Bridges
关键词
拱桥
拱座
桩-土相互作用
弹塑性分析
桥梁设计
arch bridge
arch seat
pile-soil interaction
elasto-plastic analysis
bridge design
