砂雨法试样制备平行试验研究

马险峰; 孔令刚; 方薇; 龚壁卫; 李浩; 徐光明; 赵维; 张雪东; 陈云敏

doi:10.11779/CJGE201410005

砂雨法试样制备平行试验研究 English Version

马险峰^{1, 2},
孔令刚³,
方薇⁴,
龚壁卫⁵,
李浩⁶,
徐光明⁷,
赵维⁸,
张雪东⁹,
陈云敏³

1.
同济大学地下建筑与工程系,上海 200092
5.
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
2.
同济大学岩土及地下工程教育部重点实验室,上海 200092;
6.
西南交通大学高速铁路线路工程教育部重点实验室,四川成都 6110031
8.
大连理工大学土木水利学院岩土工程研究所,辽宁大连 116024
4.
长沙理工大学交通运输工程学院道路工程系,湖南长沙 410004
3.
软弱土与环境土工教育部重点实验室（浙江大学）,浙江杭州 310058;
9.
中国水利水电科学研究院岩土工程研究所,北京 100048
7.
南京水利科学研究院水文水资源与水利工程国家重点实验室,江苏南京 210029

基金项目: 国家自然科学基金面上项目（41272290）

详细信息

作者简介:
马险峰（1972- ）,男,副教授,主要从事岩土离心模型试验,地下结构抗震,数值分析等方面的研究和教学。E-mail: xfma@tongjt.edu.cn。

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出版历程
- 收稿日期: 2013-12-26
- 发布日期: 2014-10-19

Parallel tests on preparation of samples with sand pourer

1.
Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
5.
Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China
2.
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;
6.
MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, China
8.
Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
4.
School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, China
9.
Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
7.
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China

摘要

摘要: 在中国各类基础设施大规模、高速度建设的历史背景下,岩土工程学科也面临空前的机遇和挑战,以岩土离机为代表的大型试验装备也得到迅速发展,为理论研究、实践指导提供了十分重要的研究手段。为推动我国离心模拟技术标准化及在实际工程中的应用,扩大离心模拟技术在工程界的影响力,开展了全国岩土工程离心模拟的平行试验,试验内容包括砂土模型地层的制备、桩基础承载力以及边坡稳定共3大类试验。介绍的是采用砂雨法制备砂土地层的相关试验成果,共有8家单位参与了此项研究工作。试验材料采用福建标准砂,出砂头采用圆筒网眼式或者线型鸭嘴式,落砂装置各单位自备。试验结果分析得到落距-相对密实度标定曲线,并设定土体目标相对密实度（55%和75%）,验证曲线的可靠性;同时考察制备模型地基的相对密实度在空间上的均质性,并对出砂头的类型及孔径大小、流量、出砂头水平移动速度对相对密实度的影响做了初步探讨。
- 模型试验 /
- 砂雨法 /
- 标准砂相对密实度 /
- 平行试验
Abstract: Unprecedented opportunities and challenges have been confronted in geotechnical engineering practices in the context of all infrastructure in large-scale and high-speed construction of infrastructures in China. Large test equiments represented by geotechnical centrifuge has been developed rapidly, providing important tools for theoretical researches and practical problem-solving. To promote the standardization of centrifuge modeling techniques and its application in the practice, at the same time, to expand influence of centrifuge modeling techniques in the engineering, the parallel tests on geotechnical centrifuge modeling are carried out in China, including the preparation of sand stratum model, bearing capacity of pile foundation as well as slope stability. The relevant experimental results among 8 institutions, for preparation of samples with sand pourer are introduced. Fujian standard sand is chosen as the experimental material, the type of sand rainner outlet, includes cylindrical mesh type and linear duckbill type, and the shakeout device is prepared by each participant institution. Based on the
- model test /
- sand pourer /
- standard sand /
- relative density

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参考文献(11)

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