| 基岩面形状对土体变形破坏的影响实验研究 |
| |
| 引用本文： | 傅志斌,刘志华,介玉新,袁长生.基岩面形状对土体变形破坏的影响实验研究[J].地质科技通报,2019,38(6):1-9. |
| |
| 作者姓名： | 傅志斌 刘志华 介玉新 袁长生 |
| |
| 作者单位： | 中国地质大学（武汉）;建设综合勘察研究设计院有限公司;清华大学水沙科学与水利水电工程国家重点实验室 |
| |
| 基金项目： | 十三五国家重点研发计划(2017YFC0404802);科技部科研院所基金项目(NCSTE-2007-JKZX-261);住建部科技项目(2018-K5-005);北京市百千万人才工程项目(2017A30) |
| |
| 摘 要： | 采用离心模型试验研究基岩面形状对重力式加筋挡土墙土体变形破坏的影响,基岩面形状设置为直线形和台阶形,直线情况下基岩与挡墙分别围成三角形和梯形,台阶则分为两级台阶和三级台阶,试验共进行4组。试验结果表明,水平位移和沉降变化剧烈的位置主要在土体顶部靠近挡墙的位置,近岩面处土体水平位移和沉降都比较小;在挡土墙底部基岩与挡墙之间应当有足够的水平距离才有利于土体的稳定;基岩与挡墙所围形状为三角形时对土体的变形和稳定最为不利,基岩与挡墙围成梯形或基岩为台阶形时对土体稳定比较有利。
|
| 关 键 词： | 重力式加筋挡土墙 基岩面 离心模型试验 土体变形 破坏 |
Centrifugal Model Test on the Influence of Bedrock Shape on the Reinforced Retaining Wall |
| |
| Fu Zhibin,Liu Zhihua,Jie Yuxin,Yuan Changsheng.Centrifugal Model Test on the Influence of Bedrock Shape on the Reinforced Retaining Wall[J].Bulletin of Geological Science and Technology,2019,38(6):1-9. |
| |
| Authors: | Fu Zhibin Liu Zhihua Jie Yuxin Yuan Changsheng |
| |
| Affiliation: | (China University of Geosciences(Wuhan),Wuhan 430074,China;China Institute of Geotechnical Investigation and Surveying Ltd.,Beijing 100007,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China) |
| |
| Abstract: | Centrifugal model tests were carried out to study the influence of bedrock shape on the stress and deformation of reinforced gravity retaining wall. A total of 4 groups were tested with the bedrock shape to be straight or stepped. Under the circumstances of a straight line, the bedrock and the retaining wall turned into a triangle and a trapezoid area respectively. The stepped bedrock includes 2 and 3 steps. The results indicate that the horizontal displacement and settlement are significant at the top of the soil near the retaining wall, relatively slightly approaching the bedrock. Keeping an adequate distance between the bedrock and the retaining wall is beneficial for the soil stability. The triangle formed by bedrock and the retaining wall goes against the soil deformation and stability while the stepped shape is in favor of soil stability. |
| |
| Keywords: | reinforced gravity retaining wall bedrock shape centrifugal model test soil deformation collapse |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《地质科技通报》浏览原始摘要信息 |
|
点击此处可从《地质科技通报》下载全文 |
