抛物线拱变位引起的内力计算一般公式  

General Formula for Calculating Internal Forces of Parabolic Aarch Caused by Deflection

作　　者：李新平[1] 邓德员[1] 张云帆[1] 

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《科学技术与工程》2011年第6期1388-1391,共4页Science Technology and Engineering

基　　金：华南理工大学亚热带建筑科学国家重点室开发课题编号(2008KA07)重点实验室开发课题(2008KA07)资助

摘　　要：采用结构力学方法,从弹性中心法出发,推导出抛物线拱变位引起的内力计算一般公式和抛物线拱的两拱脚转角位移方程。通过极限逼近得到与直梁一致的杆端转角位移方程。还通过算例用有限元软件验证了内力计算公式。To use the structural mechanics method,to start from the method of elastic center method,the general formula for calculating internal forces of parabolic arch caused by the deflection and the rotational displacement equation for parabolic arch are derived.By using the method of limit approximation can obtain the same result as straight beam.Also,some example are calculated by finite element software to verify the formula.

关 键 词：弹性中心法 抛物线拱 转角位移方程 直梁 

分 类 号：U441.1[建筑科学—桥梁与隧道工程]