[1]黄志斌.移动荷载作用下跨越空洞加筋道路动力响应分析[J].福建理工大学学报,2024,22(03):219-224.[doi:10.3969/j.issn.2097-3853.2024.03.003]
　HUANG Zhibin.Dynamic response analysis of a geosynthetic-reinforced embankment overlying voids under traffic loads[J].Journal of Fujian University of Technology;,2024,22(03):219-224.[doi:10.3969/j.issn.2097-3853.2024.03.003]
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移动荷载作用下跨越空洞加筋道路动力响应分析
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《福建理工大学学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第22卷
期数:
2024年03期
页码:
219-224
栏目:
出版日期:
2024-06-25

文章信息/Info

Title:
Dynamic response analysis of a geosynthetic-reinforced embankment overlying voids under traffic loads
作者:
黄志斌
中铁二十四局集团福建铁路建设有限公司
Author(s):
HUANG Zhibin
Fujian Railway Construction Co., Ltd., China Railway 24th Bureau Group
关键词:
加筋路基; 空洞; 动力响应; 双层梁模型; 解析方法
Keywords:
geosynthetic-reinforced embankment;  voids;  dynamic response;  double-layer beam model;  analytical method
分类号:
O327
DOI:
10.3969/j.issn.2097-3853.2024.03.003
文献标志码:
A
摘要:
为研究跨越空洞加筋道路系统的动力特性,将加筋道路系统视为跨越空洞的双层地基梁,推导出移动荷载作用下加筋道路系统动力响应解析解。通过与既有理论模型计算结果对比,验证所推导计算式的正确性。并探讨了空洞宽度、路面板抗弯刚度、加筋垫层抗弯刚度、回填土及路基弹性系数对加筋道路系统动力响应的影响。分析表明:加筋道路底部空洞宽度、路面板抗弯刚度以及路基弹性系数对移动荷载作用下加筋道路系统振动响应的影响较大,并且对加筋垫层中点振动位移的影响比对路面板的影响更显著。加筋垫层抗弯刚度对其自身中点振动位移影响较大,但对路面板中点振动位移的影响较小。而回填土弹性系数对路面板中点的振动位移影响较大,但对加筋垫层中点的振动位移影响较小。
Abstract:
To study the dynamic characteristics of a geosynthetic-reinforced embankment overlying voids, the geosynthetic-reinforced system was simplified as a double-layer foundation beam overlying voids, and the corresponding analytical solutions were derived for the dynamic responses of the reinforced system under moving loads. The proposed solutions were verified by comparing with the calculation results of the existing theoretical model. The effects of model parameters on the dynamic response of the reinforced system were discussed, including the void length, the bending stiffness of the pavement slab and that of the reinforced cushion, and the elastic coefficient of the embankment fill and that of the foundation soil. Analyses show that the width of voids underlying the reinforced system, the bending stiffness of the pavement slab and the elastic coefficient of the foundation soil have significant impacts on the vibration response of the reinforced system under moving loads, and the impact on the vibration displacement of the midpoint of the reinforced cushion is more significant than that on the pavement slab. The bending stiffness of the reinforced cushion has a significant impact on its own midpoint vibration displacement, but has a relatively small impact on the midpoint vibration displacement of the pavement slab. On the contrary, the elastic coefficient of the embankment fill has a larger vibration displacement at the midpoint of the pavement slab, but a smaller vibration displacement at the midpoint of the reinforced cushion.

参考文献/References:

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更新日期/Last Update: 2024-06-25