基于密度控制理论的饱和黄土地基抗液化处理指标研究

王谦; 王兰民; 王峻; 高中南

基于密度控制理论的饱和黄土地基抗液化处理指标研究 English Version

王谦^{1, 2},
王兰民^{1, 2},
王峻^{1, 2},
高中南²

1. 中国地震局黄土地震工程重点实验室,甘肃兰州 730000; 2. 中国地震局兰州地震研究所,甘肃兰州 730000

基金项目: 中国地震局黄土地震工程重点实验室开放基金项目（KLLEE-12-003）

详细信息

作者简介:
王谦(1985- )，男，甘肃临夏人，主要从事黄土动力学与地震工程理论与试验研究工作。E-mail: wangq0930@126.com。

中图分类号: TU435
计量
- 文章访问数: 252
- HTML全文浏览量: 0
- PDF下载量: 395
出版历程
- 收稿日期: 2013-07-16
- 发布日期: 2013-11-24

Indices of anti-liquefaction treatment of saturated compacted loess foundation based on theory of density control

WANG Qian^{1, 2},
WANG Lan-min^{1, 2},
WANG Jun^{1, 2},
GAO Zhong-nan²

1. Key Laboratory of Loess Earthquake Engineering, CEA, Lanzhou 730000, China; 2. Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China

摘要

摘要: 选择兰州市典型场地挖取Q₃黄土,制备不同干密度的击实黄土试样,在WF-12440型动三轴-扭剪试验系统上进行了动三轴液化试验。通过整理和分析试验结果,得出了干密度与液化应力比之间的定量影响关系,分析了不同干密度的饱和击实黄土的动残余变形发展特征,并根据Seed简化判别法计算了不同地震烈度下饱和黄土液化的临界液化应力比,从而得出了不同抗震设防烈度下饱和黄土地基抗液化处理的干密度阈值,为工程中地基抗液化密实处理提供了理论依据。
- 黄土液化 /
- 干密度 /
- 地基处理 /
- 指标
Abstract: Several compacted loess samples with different dry densities are prepared, which are the typical loess in Lanzhou City. The dynamic triaxial liquefaction tests are conducted by using the WF-12440 hollow cyclic apparatus. Through analysis of the experimental data, the relationship between liquefaction stress ratio and vibration times of the saturated compacted loess with different dry densities is proposed, the quantitative relationship of influence on liquefaction stress of saturated compacted loess by the initial void ratio is established, and the dynamic strain characteristics of saturated compacted loess with different dry densities are analyzed. Moreover, the critical liquefaction stress ratio and the critical dry density under different seismic intensities are calculated according to the Seed simplified procedure for liquefaction evaluation. The results are excepted to provide guidance for the anti-liquefaction treatment of the site in real projects.
- loess liquefaction /
- dry density /
- foundation treatment /
- index

HTML全文

参考文献(11)

[1]	汪闻韶. 土的动力强度与液化特性[M]. 北京: 中国水电出版社, 1996. (WANG Wen-shao. Dynamic strength and liquefaction characteristics of soil[M]. Beijing: China Electric Power Press, 1996. (in Chinese))
[2]	陈文化. 地震液化流滑震害[J]. 自然灾害学报, 2001, 10(4): 88-93. (CHEN Wen-hua. Slipping disaster induced by seismic liquefaction[J]. Journal of Natural Disasters, 2001, 10(4): 88-93. ( in Chinese))
[3]	SEED H B, HON M. Design problems in soil liquefaction[J]. Journal of Geotechnical Engineering, 1987, 113(8): 827-745.
[4]	VAID Y E, THOMAS J. Liquefaction and postliquefaction behavior of sand[J]. Journal of Geotechnical Engineering, ASCE, 1995, 121(2): 163-173.
[5]	张建民, 时松孝次, 田屋裕司. 饱和砂土液化后的剪切吸水效应[J]. 岩土工程学报, 1999, 21(4): 398-404. (ZHANG Jian-min, TOKIMATSU Kohji, TAYA Yuhji. Effect of water absorption in shear of post-liquefaction[J]. Chinese Journal of Geotechnical Engineering, 1999, 21(4): 398-404. (in Chinese))
[6]	白铭学, 张苏民. 高烈度地震时黄土地层的液化滑移[J].工程勘察, 1990, 20(6): 1-5. (BAI Ming-xue, ZHANG Su-min. Loess liquefaction flow in high intensity earthquake[J]. Geotechnical Investigation and Surveying, 1990, 20(6): 1-5. (in Chinese)).
[7]	王谦, 王兰民, 袁中夏, 等. 汶川地震中甘肃清水田川黄土液化的试验研究[J]. 水文地质工程地质, 2012, 39(2): 116-120. (WANG Qian, WANG Lan-min, YUAN Zhong-xia, et al. A study of loess liquefaction induced by the Wenchuan Ms8. 0 Earthquake in Tianchuan, Qingshui County, Gansu Province[J]. Hydrogeology & Engineering Geology, 2012, 39(2): 116-120. (in Chinese))
[8]	王峻, 王兰民, 王平, 等. 不同地区饱和黄土液化特性研究[J]. 水文地质工程地质, 2011, 38(5): 54-56. (WANG Jun, WANG Lan-min, WANG Ping, et al. Study on liquefaction characters of saturated loess in different regions [J]. Hydrogeology & Engineering Geology, 2011, 38(5): 54-56. (in Chinese))
[9]	ISHIHARA K, OKUSA S, OYAGI N, et al. Liquefaction- induced flow slide in the collapsible loess deposit in soviet Tajik[J]. Soils and Foundations, 1990, 30(4): 73-89.
[10]	PRAKASH S, PURI V K. Liquefaction of loessial soils[C]// Anon Proc of Third International Conference on Seismic Microzonation. Seattle, 1982: 1101-1107.
[11]	SEED H B, IDRISS I M, ARANGO I. Evaluation of liquefaction potential using field performance data[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1983, 109(3): 458-482.

施引文献

资源附件(0)

计量

文章访问数: 252
HTML全文浏览量: 0
PDF下载量: 395
被引次数: 0

基于密度控制理论的饱和黄土地基抗液化处理指标研究 English Version

作者简介: 王 谦(1985- )，男，甘肃临夏人，主要从事黄土动力学与地震工程理论与试验研究工作。E-mail: wangq0930@126.com。

计量

出版历程

Indices of anti-liquefaction treatment of saturated compacted loess foundation based on theory of density control

计量

出版历程

目录

作者简介:
王谦(1985- )，男，甘肃临夏人，主要从事黄土动力学与地震工程理论与试验研究工作。E-mail: wangq0930@126.com。