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| 基于变分原理的整体道床结构动力有限元分析 | |
| 引用本文： | 王祥秋,杨林德,高文华. 基于变分原理的整体道床结构动力有限元分析[J]. 振动与冲击, 2005, 24(4): 99-102 |
| 作者姓名： | 王祥秋 杨林德 高文华 |
| 作者单位： | 1. 佛山科学技术学院土建系,佛山,528000;同济大学土木工程学院,上海,200092 2. 同济大学土木工程学院,上海,200092 3. 湖南科技大学土木工程学院,湘潭,411201 |
| 基金项目： | 湖南省教育科学研究基金资助项目上海市重点建设基金资助项目 |
| 摘 要： | 根据国内外铁路隧道整体道床的建设经验,针对弹性支承块式整体道床结构,建立轨道-道床底板-底部垫层相互作用的粘弹性地基梁模型。依据弹性梁动力分析的第一类变量广义HAMILTON拟变分原理,推导出了粘弹性地基上弹性地基梁的动力分析方程,建立了相应的有限元解析方法对整体道床结构的动力响应特征与影响因素进行分析。研究成果对优化整体道床结构的设计参数,分析其动力稳定性具有重要意义。 |
| 关 键 词： | 整体道床 粘弹性地基梁 变分原理 动力分析 |
| 收稿时间： | 2004-03-26 |
| 修稿时间： | 2004-03-262005-03-23 |
DYNAMIC FEM ANALYSIS FOR THE INTEGRATION BALLAST STRUCTURE BASED ON VARIATION PRINCIPLE |
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| WANG Xiangqiu,YANG Linde,Gao Wenhua. DYNAMIC FEM ANALYSIS FOR THE INTEGRATION BALLAST STRUCTURE BASED ON VARIATION PRINCIPLE[J]. Journal of Vibration and Shock, 2005, 24(4): 99-102 | |
| Authors: | WANG Xiangqiu YANG Linde Gao Wenhua |
| Abstract: | Based on the constructional experiences of integration ballast in tunnel at home and abroad, a model of visco-elastic foundational beam that simulates the interaction among rail,ballast and embankment was established for the elastically supported integration ballast structure. The dynamic equation was derived for the elastic foundational beam on the visco-elastic foundation, by means of the first kind variable generalized variation principle of Hamilton. A FEM analysis method was carried out to study the dynamic response characteristics and the influence factors on the ballast. The results are valuable for optimizing design parameters and analyzing dynamic stability of the ballast structure. |
| Keywords: | integration ballast visco-elastic foundational beam variation principle dynamic analysis |
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