摘要
考虑拱肋初始挠度等缺陷的影响,采用钢管混凝土组合材料的本构关系,建立钢管混凝土单圆管肋拱计算模型。利用大型通用软件对一肋拱模型试验进行模拟计算,采用混合法,分别进行了线弹性、几何非线性及材料与几何双重非线性受力分析。通过计算结果与试验结果的比较,说明本文计算方法具有一定的优点,可为类似计算借鉴。
Taking into account the effects of imperfection and large displacement of arch rib, an approach to the double nonlinear stability analysis of concrete-filled steel tubular arch bridge is presented. Based on the constitutive relation of combinatorial material of concrete filled steel tube （CFST） , the calculation analyzes linear and nonlinear reactions of rib arch under static loads. The result of a model test shows that the method has some advantages and is usable for similar cases.
出处
《石家庄铁道学院学报》
2007年第2期17-21,共5页
Journal of Shijiazhuang Railway Institute
关键词
钢管混凝土
肋拱
双重非线性
concrete filled steel tube （CFST）
rib arch
double nonlinearities
