摘要
为了准确分析钢—混凝土组合连续梁的长期变形性能,基于换算弹性模量法,采用ANSYS建立了组合梁的空间有限元模型,给出了按换算弹性模量法和有限元软件联合应用的计算组合梁徐变变形一般方法,分析了在徐变作用下钢-混凝土组合连续梁的长期变形规律。通过具体算例说明,组合连续梁的徐变变形在2-3年基本能够达到稳定,且徐变变形的计算在组合连续梁的设计中不能忽略。
In order to analyze the long-term deformation behavior of steel-concrete composite beam more accurately,based on conversion modulus method,a space finite element model of composite beam is established with ANSYS.A new method to calculate creep deformation of composite beam combined application of conversion modulus method and finite element method is presented.The creep deformation law of steel-concrete composite beam is analyzed.The results show that the creep deformation of composite beam reaches stable while 2-3 years.The creep deformation cannot be neglected in designing steel-concrete composite beam.
出处
《工程与试验》
2011年第3期8-11,共4页
Engineering and Test
关键词
桥梁工程
组合结构
徐变变形
换算弹性模量法
bridge engineering
composite construction
creep deformation
conversion modulus method
