变截面空心薄壁高墩稳定临界力计算  

Calculation of Constant Critical Force for Hollow Thin-wall High Pier in Variable Cross-section

作　　者：蒋孝辉[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《西部交通科技》2007年第6期82-84,共3页Western China Communications Science & Technology

摘　　要：桥梁高墩的稳定性是设计和施工中主要的控制因素,文章介绍根据能量原理的Ritz法,在对截面抗弯惯性矩作线形假定后,推导出一端固支一端自由和一端固支一端水平铰支的变截面空心薄壁高墩失稳临界荷载计算公式,可用于设计施工中对高墩失稳临界荷载的近似计算。The stability of high bridge pier is the major control factor for bridge design and construction.In the Article,the Ritz method that is on the basis of energy principle has been introduced.After the sectional bending inertia moment being assumed as linear,a formula for instable critical load of hollow thin-wall high pier in variable section can be deducted,where the pier has a fixed end and a free end,or the pier has a fixed end and a horizontal hinged end.The formula can be used in approximate calculation of instable critical load of high pier in the design and construction.

关 键 词：桥梁 高墩 RITZ法 稳定性 临界力 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]