| 考虑滑移、剪力滞后和剪切变形的组合梁单元 |
| |
| 引用本文： | 孙飞飞,李国强.考虑滑移、剪力滞后和剪切变形的组合梁单元[J].同济大学学报(自然科学版),2004,32(4):436-440. |
| |
| 作者姓名： | 孙飞飞 李国强 |
| |
| 作者单位： | 同济大学,建筑工程系,上海,200092 |
| |
| 摘 要： | 通过简单的运动学假设,提出了考虑滑移、剪力滞后和剪切变形的钢-混凝土组合梁位移法单元.由于组合梁存在多种变形的耦合作用,低次单元16DOF(自由度)应力精度较低,而具有5次Hermite多项式形函数的高次单元26DOF能以较少的单元数达到满意的精度.算例分析表明,忽略钢梁的剪切变形可能会导致显著的误差.
|
| 关 键 词： | 钢-混凝土组合梁 滑移 剪力滞后 剪切变形 梁单元 |
| 文章编号： | 0253-374X(2004)04-0436-05 |
Beam Formulation for Composite Beams with Slip,Shear Lag and Shear Deformation |
| |
| SUN Fei-fei,LI Guo-qiang.Beam Formulation for Composite Beams with Slip,Shear Lag and Shear Deformation[J].Journal of Tongji University(Natural Science),2004,32(4):436-440. |
| |
| Authors: | SUN Fei-fei LI Guo-qiang |
| |
| Abstract: | By means of simple kinematic assumptions,a displacement-based beam formulation is proposed for steel-concrete composite beams with slip,shear lag and shear deformation.Because of deformation couplings,the stress accuracy of a low order element 16DOF is rather low.Therefore,a 5th order Hermite polynomial shape function is applied to construct a high order element 26DOF,achieving satisfactory results of stresses with a coarse mesh.Numerical examples show that significant errors can result from neglecting the shear deformation of the steel beam. |
| |
| Keywords: | steel-concrete composite beam slip shear lag shear deformation beam element |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
