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| 黄土暗穴对路面结构变形响应的影响分析 | |
| 引用本文： | 邓亚虹,彭建兵,范文,夏唐代.黄土暗穴对路面结构变形响应的影响分析[J].岩土力学,2008,29(3):673-678. |
| 作者姓名： | 邓亚虹 彭建兵 范文 夏唐代 |
| 作者单位： | 1. 长安大学,地震工程与灾害防治研究所,西安,710054;浙江大学,岩土工程研究所,杭州,310027 2. 长安大学,地震工程与灾害防治研究所,西安,710054 3. 浙江大学,岩土工程研究所,杭州,310027 |
| 基金项目： | 国家西部交通建设科技项目 |
| 摘 要： | 基于动力学基本方程,运用有限单元法(FEM)和NEWMARK隐式积分方法,对动荷载(FWD荷载)作用下路基下伏黄土暗穴对路面结构变形响应的影响进行了弹塑性数值分析.考虑到人工截断边界上波反射对计算结果的影响,分别用传递边界和半无限单元来处理侧面和底面边界.主要考虑了动荷载周期、暗穴洞径和埋深3个影响因素,并在计算结果的基础上分析总结了它们对路面结构变形响应的影响规律. |
| 关 键 词： | 黄土暗穴 路面结构 变形响应 有限元法 传递边界 半无限单元 FWD荷载 黄土暗穴 路面结构 变形响应 影响分析 loess hidden structure pavement response deformation 规律 影响因素 洞径 周期 传递边界 处理 半无限单元 结果 计算 波反射 |
| 文章编号： | 1000-7598-(2008)03-0673-06 |
| 收稿时间： | 2006-05-31 |
| 修稿时间： | 2006年5月31日 |
Dynamic deformation response of pavement structure subjected to hidden holes in loess |
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| DENG Ya-hong,PENG Jian-bing,FAN Wen,XIA Tang-dai.Dynamic deformation response of pavement structure subjected to hidden holes in loess[J].Rock and Soil Mechanics,2008,29(3):673-678. | |
| Authors: | DENG Ya-hong PENG Jian-bing FAN Wen XIA Tang-dai |
| Institution: | 1. Institute of Earthquake Engineering and Geohazard Prevention, Chang'an University, Xi'an 710054, China; 2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
| Abstract: | According to the basic equation of dynamics, using FEM and NEWMARK implicit algorithm, an elastoplastic numerical analysis is made to analyze the effect of hidden holes in loess on the dynamic deformation response of pavement structure. In order to reduce the effect of wave reflecting on artificial boundary, transmitting boundary and semi-infinite element are respectively used to treat the lateral and underside boundaries. The cycle of dynamic load and the diameter and depth of hidden holes in loess are the mainly considered three factors. Finally, based on the numerical calculation results, their effect laws on deformation response of pavement structure are analyzed. |
| Keywords: | hidden holes in loess pavement structure deformation response FEM transmitting boundary semi-infinite elements FWD load |
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