摘要
为了验证文献[1]给出的侧向支撑间距是否合理,按其布置支撑时能否保证采用我国型钢截面钢梁的整体稳定,对两端固定的H型钢梁进行理论研究。首先借助有限元软件ANSYS建立6根长度不同的H型钢梁模型,采用位移控制的循环加载制度,按文献[1]给出的侧向支撑间距方程布置支撑,进行非线性屈曲分析。分析结果表明,我国型钢钢梁按文献[1]布置支撑时可以有效地保证梁的整体稳定。最后,对我国规范的侧向支撑间距给出修改建议。
In order to prove whether the unbraced length is rational and can ensure the overall stability of steel beam using the section steel in China,this paper carries out research on I-steel beam with both ends fixed. By means of finite elements software ANSYS,it builds six models of steel beams with different length,and then makes some non-linear buckling analysis under cyclic loads.The results show that when adopting the unbraced length, the overall stability of steel beams which use Chinese section steel can be ensured.At last, this paper gives a recommendation on the revision of the unbraced length in current Chinese code.
出处
《钢结构》
2011年第4期56-59,共4页
Steel Construction
关键词
支撑
非线性屈曲
循环荷载
bracing
non-linear buckling
cyclic loads
