| 不同边界条件下黄土高填方沉降离心模型试验 |
| |
| 引用本文： | 曹杰,郑建国,张继文,李波,刘智,李攀.不同边界条件下黄土高填方沉降离心模型试验[J].中国水利水电科学研究院学报,2017(4):256-262. |
| |
| 作者姓名： | 曹杰 郑建国 张继文 李波 刘智 李攀 |
| |
| 作者单位： | 机械工业勘察设计研究院有限公司, 陕西 西安 710043;陕西省特殊土工程性质与处理技术重点实验室, 陕西 西安 710043,机械工业勘察设计研究院有限公司, 陕西 西安 710043;陕西省特殊土工程性质与处理技术重点实验室, 陕西 西安 710043,机械工业勘察设计研究院有限公司, 陕西 西安 710043;陕西省特殊土工程性质与处理技术重点实验室, 陕西 西安 710043;西安交通大学 人居环境与建筑工程学院, 陕西 西安 710049,长江科学院 水利部 岩土力学与工程重点实验室, 湖北 武汉 430010,机械工业勘察设计研究院有限公司, 陕西 西安 710043;陕西省特殊土工程性质与处理技术重点实验室, 陕西 西安 710043,机械工业勘察设计研究院有限公司, 陕西 西安 710043;陕西省特殊土工程性质与处理技术重点实验室, 陕西 西安 710043 |
| |
| 基金项目： | 黄土丘陵沟壑区（延安新区）工程建设关键技术研究与示范（2013BAJ06B00）；黄土地区造地工程水环境控制关键技术研究（2016KTZDSF03-02）；研发治沟造地工程地质与土壤湿陷稳定技术与标准（2017YFD0800501）；地铁隧道地震响应的动力离心模型试验和简化分析方法（CKSF2017012/YT）；深厚淤泥爆破挤淤作用机理及设计方法研究（2016GY19） |
| |
| 摘 要： | 本文针对"V"形沟谷中的黄土高填方沉降问题,进行了两种沟谷类型的离心模型试验,研究不同边界(柔性和刚性)效应下的施工期和工后沉降。同时,进行了离心状态下的增湿模拟试验,就不同边界条件下填筑体增湿沉降规律进行了初步探讨。试验结果表明,黄土高填方土体的沉降和变形与边界条件密切相关,填筑体自身沉降在"柔性"和"刚性"两种沟谷地基模型中存在明显差异。由于两种沟谷地基的约束能力不同,使得地基模量的变化对于"V"形沟谷中填筑体各阶段沉降(施工期沉降、工后沉降、湿化沉降)存在显著影响。
|
| 关 键 词： | 离心模型试验 高填方工程 黄土 沉降变形 边界条件 |
| 收稿时间： | 2017/6/15 0:00:00 |
Centrifuge model tests of loess high-filled settlement under different boundary condations |
| |
| CAO Jie,ZHENG Jianguo,ZHANG Jiwen,LI Bo,LIU Zhi and LI Pan.Centrifuge model tests of loess high-filled settlement under different boundary condations[J].Journal of China Institute of Water Resources and Hydropower Research,2017(4):256-262. |
| |
| Authors: | CAO Jie ZHENG Jianguo ZHANG Jiwen LI Bo LIU Zhi and LI Pan |
| |
| Institution: | China JIKAN Research Institute of Engineering Investigations and Design, Co, Ltd, Xi''an 710043, China;Shannxi Key Laboratory of Engineering Behavior and Foundation Treatment for Special Soil, Xi''an 710043, China,China JIKAN Research Institute of Engineering Investigations and Design, Co, Ltd, Xi''an 710043, China;Shannxi Key Laboratory of Engineering Behavior and Foundation Treatment for Special Soil, Xi''an 710043, China,China JIKAN Research Institute of Engineering Investigations and Design, Co, Ltd, Xi''an 710043, China;Shannxi Key Laboratory of Engineering Behavior and Foundation Treatment for Special Soil, Xi''an 710043, China;School of Human Settlements and Civil Engineering, Xi''an Jiaotong University, Xi''an 710049, China,Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, China,China JIKAN Research Institute of Engineering Investigations and Design, Co, Ltd, Xi''an 710043, China;Shannxi Key Laboratory of Engineering Behavior and Foundation Treatment for Special Soil, Xi''an 710043, China and China JIKAN Research Institute of Engineering Investigations and Design, Co, Ltd, Xi''an 710043, China;Shannxi Key Laboratory of Engineering Behavior and Foundation Treatment for Special Soil, Xi''an 710043, China |
| |
| Abstract: | This paper focuses on the loess high-filled settlement in V-shaped valley. Centrifugal modeling technique with two valley models was employed to consider different boundary (flexible and rigid) effects during construction and post-construction settlement. Meanwhile, precipitation was also simulated, and the settlements of filled soil during moistening process were observed.The rule of loess filled body moistening de-formation under different boundary conditions was discussed. The results indicate, the settlement and defor-mation of loess high-filled soil are closely related to the boundary conditions. There are significant differenc-es between the soft and rigid valleys. The change of foundation modulus has a significant effect on the filled soil settlement (construction period, long-term settlement, moistening settlement, etc.) in the V-shaped valley,due to the different constraint degree of the original valley foundation. |
| |
| Keywords: | centrifugal model test high-fill embankment loess settlement and deformation boundary con-dition |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国水利水电科学研究院学报》浏览原始摘要信息 |
| 点击此处可从《中国水利水电科学研究院学报》下载免费的PDF全文 |
|
