摘要
本文采用考虑剪切变形的 Timoshenko 梁理论,利用分层有限元法对钢筋混凝土梁进行非线性分析。在分析中,提出了一种在迭代过程中逐次逼近中性轴的办法。在材料模型方面,考虑了混凝土拉伸时的开裂、开裂后的骨料咬合及拉伸加强效应,钢筋暗销作用等,另外,对于混凝土压缩时延性性质,则首次采用了非均匀强化塑性理论来描述。与别的方法相比,本文的方法具有计算量少,数据准备简单等优点。
Adopting the Timoshenko's beam theory of considering transvers shear deformation, the material nonlinear analysis of RC beams have been done by using layered finite element method.In the analysis,a method with which neutral axis is approximated by using itera tion technology.In respect of the material,the cracking of concrete in tension,the aggre- gate interlock,the tension stiffening and dowel action after cracking of concrete are consid- ered.In addition,the ductile behavior of concrete in compresion is represented with nonaniform hardening plasticity theory.Compared with others,the method in this paper has the advantages of the simplicity of data preparation and effectiveness of computation.
出处
《工程力学》
EI
CSCD
1990年第1期50-56,共7页
Engineering Mechanics
