| 动载荷下边坡的失稳分析 |
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| 引用本文： | 张友葩,高永涛,王杰林,方祖烈.动载荷下边坡的失稳分析[J].北京科技大学学报,2003,25(2):110-116. |
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| 作者姓名： | 张友葩 高永涛 王杰林 方祖烈 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083
2. 山东省泰安市公路局,泰安,271000 |
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| 基金项目： | 山东省科委科技攻关项目(No.321008) |
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| 摘 要： | 根据公路和铁路承载结构以及载荷性质的不同，利用LUSAS有限元分别对两种动载的属性进行了分析，得出了两种载荷的位移、应力的时程曲线和应力变化轮廓，以及两种不同结构体的本征值与振动频率的关系，利用这些结果得出了两种动载荷的“有害频率”和“有害动载时间”．根据动载属性分析，结合实际事例，利用FLAC分别对这两种不同载荷对边坡的扰动情况进行了比较系统的数值分析．
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| 关 键 词： | 路基边坡 动载荷 失稳分析 承载结构 载荷性质 本征值 振动频率 |
| 修稿时间： | 2002年4月10日 |
Unstable Analysis of Slope under Dynamic Loading Condition |
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| ZHANG Youpa,GAO Yongtao,WANG Jielin,FANG Zulie
Civil and Environmental School,University of Science and Technology Beijing,Beijing ,China
Local Highway Management Office of Taian City,Taian ,China.Unstable Analysis of Slope under Dynamic Loading Condition[J].Journal of University of Science and Technology Beijing,2003,25(2):110-116. |
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| Authors: | ZHANG Youpa GAO Yongtao WANG Jielin FANG Zulie
Civil and Environmental School University of Science and Technology Beijing Beijing China
Local Highway Management Office of Taian City Taian China |
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| Institution: | ZHANG Youpa,GAO Yongtao,WANG Jielin,FANG Zulie
1) Civil and Environmental School,University of Science and Technology Beijing,Beijing 100083,China
2) Local Highway Management Office of Taian City,Taian 271000,China |
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| Abstract: | According to the difference between railway and highway loading carried structures under the dynamics loading condition, some key properties of the dynamic loading were analyzed by LUSAS FEM. The curves of displacement in the vertical direction and stress versus dynamic time as well as the relationship between eigenvalues and dynamics frequency about the railway and highway were obtained. The "hurtful frequency" and "hurtful dynamic time" of dynamic loading were acquired from analysical results. Combined with a in-situ engineering case of a soil-masses slope, located in Shandong province on No.205 national highway, a numerical model under the double dynamics loading was built by using FLAC. Four different loading conditions worked on the unstable mechanism of soil slope were discussed respectively. |
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| Keywords: | dynamic loading slope unstability eigenvalue numerical analysis |
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