华侨大学学报（自然科学版）2016，Vol.37Issue(2)：234-240,7.DOI:10.11830/ISSN.1000-5013.2016.02.0234
部分充填式钢箱-砼组合梁考虑滑移和剪切变形的变分解法
Energy Variational Method to Analyze Concrete-Partial-Filled Steel Box Composite Beam Considering Shear Deformation and Slip Effect
摘要
Abstract
In order to study the influence of slip and shear deformation to the deformation of concrete-partial-filled steel box composite beams,the differential equations and boundary conditions are established.Based on the generalized dis-placement theory and energy variational principle of Timoshenk beam,the model and the assumption of the composite beam variational calculation are presented.The combined elastic analytical solutions of the differential equations,deflec-tion and additional moment of the negative moment region of the simple supported composite box girder with double de-formation modes are derived by the minimum potential energy principle.Compared with the measured values and theoreti-cal formulas of two composite beams with different shear connection degrees,it′s shown that the deflection and slip calcu-lated by the variational method in the elastic stage agree with the measured values,which proves the validity of the theo-retical formula.关键词
部分充填式钢箱-砼组合梁/负弯矩区/变分法/滑移变形/剪切变形Key words
concrete-partial-filled steel box composite beam/negative moment region/energy variational method/slip de-formation/shear deformation分类
建筑与水利引用本文复制引用
莫时旭,胥海宁..部分充填式钢箱-砼组合梁考虑滑移和剪切变形的变分解法[J].华侨大学学报（自然科学版）,2016,37(2):234-240,7.基金项目
国家自然科学基金资助项目（51168011，51108109）；广西岩土力学与工程重点实验室科研基金资助项目 （）
