单杆弯剪复合作用下内时模型计算分析  

Numerical analyses on member endochronic model under the interaction between shearing forces and bending forces

作　　者：韩福娥[1] 张硕英[2] 邹胜利 

机构地区：[1]西安工程科技学院理学院,陕西西安710048 [2]西安交通大学建筑工程与力学学院,陕西西安710049 [3]西北建筑设计研究院深圳分院,广东深圳518031

出　　处：《纺织高校基础科学学报》2006年第1期50-53,共4页Basic Sciences Journal of Textile Universities

摘　　要：讨论复合受力条件(剪力和弯矩耦合作用)下对单柱的截面综合内时的定义,并分析该定义下的数值求解,建立了考虑剪切变形的杆内时模型.该模型仍具有杆内时模型的优点,适用于按增量初内力法进行杆剪切变形的结构弹塑性分析.单柱单弯的算例表明:对于剪切变形较小的情况,考虑剪切的杆内时模型在反映杆端力和位移关系方面较现有杆内时模型精确,且描述反复加载条件下杆本构关系是可行的,可由截面内时正确直观地反映沿杆长分布各截面的弹塑性程度.The synthetic endochronic definition on compound forces is given for the interaction between the shearing force and the bending force in this paper. At the same time, the numerical method is commended to calculate the endoehronic definition equation. In the case, member endochronic model considering the sheafing effect is sufficiently established. The model in this paper can be used in structural elastic-plastic analyses based on the incremental initial-force method where sheafing distortions of the members are taken into account, and has the advantage of the former member endochronic model. For the experiment cantilever column with one transverse load at the top, Results show that when the sheafing force is small, this model can be well used in the description of the relationship between the force and the displacement at member ends, the constitutive relationship of the member under the periodic load can be manifested as well and the elastic-plastic degree of the every section along the member can be displayed correctly and audio -visually.

关 键 词：杆内时模型 剪切变形 结构弹塑性分析 复合受力 

分 类 号：TU313.2[建筑科学—结构工程]