基于哈密顿理论的槽形梁桥剪力滞后分析  

ANALYSIS FOR FLAT-ARCH-SHAPED BEAM BRIDGE BASED ON HAMILTONIAN THEORY

作　　者：胡启平[1] 尹磊[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《低温建筑技术》2010年第6期38-40,共3页Low Temperature Architecture Technology

基　　金：河北省自然科学基金资助项目(E2006000630)

摘　　要：基于薄壁杆件结构双向弯曲理论,计及其剪切变形与纵向翘曲,引入纵向位移的插值函数,建立了考虑剪力滞后影响的槽形截面梁桥受弯分析的哈密顿对偶求解体系,用半离散精细积分法求该体系的高精度数值解。计算结果表明,本方法具有较高的精度和适用性,可方便地用于槽形截面梁桥的计算。Based on the consistency theory of thin-wall construction,Hamiltonian dual systems are established for the bending problems of flat-arch-shaped beam bridge,in which the interpolating function of the length travel and the shear lag impact was introduced.Then numerical solutions with high accuracy are often obtained with the precise integration method.The results of the example show that the method is of higher precision and applicability.Moreover,it can be applied conveniently to calculate the problem of flat-arch-shaped beam bridge.

关 键 词：槽形截面梁 剪力滞后 哈密顿对偶求解体系 精细积分法 插值函数 

分 类 号：TU331[建筑科学—结构工程]