箱梁横向框架内力的程序计算分析  

Program analysis of Transversal Frame Internal Force in Box Girder

作　　者：张昊宇[1] 苏贤锋[1] 徐弘亮[1] 

机构地区：[1]湖南科技大学土木工程学院,湘潭411201

出　　处：《北方交通》2010年第11期33-36,共4页Northern Communications

摘　　要：运用平面框架分析的基本方法,对箱形截面梁的横向框架内力进行分析。为了解桥梁沿长度方向上各个截面的横向内力,在梁长度方向截取单位长度的框架,然后用能量原理推导出横向框架单元刚度矩阵及相应等效节点力,并用FORTRAN语言编制相关程序,最后得出在各级荷载组合下箱梁桥横向内力的变化规律。该方法对横向内力的计算比较简便,对找出横向内力最不利作用位置以及横向预应力配筋有参考意义。In this paper,the basic method of plane frame analysis has been used to analyze the internal force of transversal frame in box girder.In order to know the transversal internal force of each section which along the ex-tent orientation of bridge,first,to intercept the unit length of framework along the extent orientation of bridge;and then derives out element stiffness matrix of transversal frame and corresponding equivalent nodal force according to the energy principle;with the FORTRAN language preparation procedures,finally,we can obtain the changing pat-tern of transversal internal force of box girder under the combination of various loads.Method in this paper is easy to calculate the internal force of cross direction,this paper also has reference value to find the most unfavourable position of transversal internal force and prestressing reinforcement arrangement of transversal.

关 键 词：平面框架分析 横向框架 能量原理 FORTRAN 横向内力 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]