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| 大跨度钢管混凝土拱桥自振特性分析 | |
| 引用本文： | 周刚,郑家树. 大跨度钢管混凝土拱桥自振特性分析[J]. 西南民族学院学报(自然科学版), 2007, 33(2): 400-402 |
| 作者姓名： | 周刚 郑家树 |
| 作者单位： | 四川省铁路建设有限公司 四川成都610072(周刚)，西南交通大学峨眉分校基础课部 四川峨眉614202(郑家树) |
| 摘 要： | 将大跨钢管混凝土拱桥简化为空间动力计算有限元模型,模型一不考虑基础-结构相互作用,模型二以弹簧作为考虑基础-结构相互作用的边界条件,用SUBS程序计算其自振特性,将计算结果进行比较,得出一些重要的结论. |
| 关 键 词： | 几何非线性 自振特性 基础-结构相互作用 |
| 文章编号： | 1003-2843（2007）02-0400-03 |
| 修稿时间： | 2006-09-19 |
Analysis of characteristics of free-vibration of long span steel tube concrete arch bridge |
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| ZHOU-gang,ZHENG Jia-shu. Analysis of characteristics of free-vibration of long span steel tube concrete arch bridge[J]. Journal of Southwest Nationalities College(Natural Science Edition), 2007, 33(2): 400-402 | |
| Authors: | ZHOU-gang ZHENG Jia-shu |
| Affiliation: | 1. Sichuan Provincial Railway Construction Co., Ltd., Chengdu 610072, P. R. C.; 2. Department of Basic Courses, Emei Campus, Southwest Jiaotong University, Emei 614202, P. R. C. |
| Abstract: | A dynamic calculation FEM model of long span steel tube concrete arch bridge is presented by simplifying the Long Tan-he River Bridge. In one model, the interaction of foundation-structure is not calculated, and in another model, springs are used as boundary conditions for taking the interaction of foundation-structure into consideration. The characteristics of free-vibration of the two models is solved by SUBS program. Compared with the results of the interaction of foundation-structure, some important conclusions are drawn from the above study. |
| Keywords: | geometric non-linearity characteristics of free-vibration interaction of foundation-structure |
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