动载下饱和重塑黄土的骨干曲线变化研究

›› 2011, Vol. 32 ›› Issue (2): 375-379.

动载下饱和重塑黄土的骨干曲线变化研究

廖红建^{1, 2}，肖正华^{2, 3}，刘健⁴

1.三峡大学三峡库区地质灾害教育部重点实验室，湖北宜昌 443002；2.西安交通大学土木工程系，西安 710049； 3.新疆大学建筑工程学院，乌鲁木齐 830008；4.里尔中央理工大学土木工程系，法国 59651

收稿日期:2010-04-08 出版日期:2011-02-10 发布日期:2011-02-16
作者简介:廖红建，女，1962年生，教授，博士生导师，主要从事岩土材料的本构关系及边坡稳定性研究。
基金资助:
三峡库区地质灾害教育部重点实验室基金资助项目（No.2008KDZ09）；国家自然科学基金资助项目（No. 50979087）。

Study of variation of backbone curve of saturated remolded loess under dynamic loading

LIAO Hong-jian ^{1, 2}, XIAO Zheng-hua ^{2, 3}, LIU Jian⁴

1. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area of Ministry of Education, China Three Gorges University , Yichang, Hubei 443002, China; 2. Department of Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 3.School of Architectural Engineering , Xinjiang University, Urumuchi 830008, China; 4. Génie Civil, Ecole Centrale de Lille, 59651, France

Received:2010-04-08 Online:2011-02-10 Published:2011-02-16

摘要/Abstract

摘要：

针对饱和重塑黄土进行了一系列等向固结和偏压固结下的排水与不排水动三轴试验，分析了饱和重塑黄土的动力性质、骨干曲线模型及其影响因素。基于动三轴试验结果，探讨了在考虑累积塑性应变影响下，修正Hardin-Drnevich模型的适用性。结果表明，考虑累积塑性应变时，修正Hardin-Drnevich模型能够较好地模拟饱和重塑黄土的骨干曲线试验结果。进而分析了等向固结和偏压固结、固结围压、波形和排水条件等因素对饱和重塑黄土骨干曲线的影响，得到偏压固结和固结围压的增大使骨干曲线上移，土体强度增加，而波形对骨干曲线的影响较小；排水条件下的骨干曲线较不排水条件下的有所上移，土体强度增加。所得结论可供工程设计人员参考。

关键词: 黄土, 骨干曲线, 修正Hardin-Drnevich模型, 动弹性模量试验

Abstract:

A series of triaxial tests of saturated remolded loess under dynamic loading in isotropic and anisotropic consolidation stress states on condition of drain and undrain are performed to analyse its dynamic characteristics and backbone curves. Based on the dynamic triaxial test results, the effect of accumulated plastic strain is considered; and then the applicability of modified model of Hardin-Drnevich to saturated remolded loess is discussed. The results show that the modified model of Hardin-Drnevich could simulate the backbone curve of saturated remolded loess well. After that, the influences of isotropic and anisotropic consolidation stress states, confining pressure of consolidation, wave form and drain or undrain on the backbone curve for saturated remolded loess are also discussed. The backbone curves are all upper shift under anisotropic consolidation with the increasing confining pressure of consolidation; and it is shown that the strength of samples is increased; the impact of wave form on backbone curve is little; the effect of drain condition on it is upper shift comparing with undrained condition and this indicates that the strength of samples is enhanced. The conclusions can be for referenced by engineering designers.

Key words: loess, backbone curve, modified model of Hardin-Drnevich, dynamic elastic modulus test

中图分类号:

TU 435

廖红建，肖正华，刘健. 动载下饱和重塑黄土的骨干曲线变化研究[J]. , 2011, 32(2): 375-379.

LIAO Hong-jian, XIAO Zheng-hua, LIU Jian. Study of variation of backbone curve of saturated remolded loess under dynamic loading[J]. , 2011, 32(2): 375-379.

参考文献

相关文章 15

[1]	方瑾瑾, 冯以鑫, 王立平, 余永强, . 真三轴条件下非饱和黄土的有效应力屈服特性[J]. 岩土力学, 2020, 41(2): 492-500.
[2]	夏坤, 董林, 蒲小武, 李璐, . 黄土塬地震动响应特征分析[J]. 岩土力学, 2020, 41(1): 295-304.
[3]	何鹏飞, 马巍, 穆彦虎, 黄永庭, 董建华, . 黄土−砂浆块界面剪切特性试验及本构模型研究[J]. 岩土力学, 2019, 40(S1): 82-90.
[4]	刘华, 张硕成, 牛富俊, 邵珠山, 牛泽林, 鲁洁, . 酸碱污染Q3黄土的一维压缩特征试验研究[J]. 岩土力学, 2019, 40(S1): 210-216.
[5]	朱彦鹏, 杜晓启, 杨校辉, 栗慧王君, . 挤密桩处理大厚度自重湿陷性黄土地区综合管廊地基及其工后浸水试验研究[J]. 岩土力学, 2019, 40(8): 2914-2924.
[6]	冯君, 王洋, 吴红刚, 赖冰, 谢先当, . 玄武岩纤维复合材料土层锚杆抗拔性能现场试验研究[J]. 岩土力学, 2019, 40(7): 2563-2573.
[7]	邵生俊, 陈菲, 邓国华, . 基于平面应变统一强度公式的结构性黄土填料挡墙地震被动土压力研究[J]. 岩土力学, 2019, 40(4): 1255-1262.
[8]	王铁行, 金鑫, 罗扬, 张松林. 考虑卸荷作用的黄土湿陷性评价方法研究[J]. 岩土力学, 2019, 40(4): 1281-1290.
[9]	王娟娟, 郝延周, 王铁行. 非饱和压实黄土结构特性试验研究[J]. 岩土力学, 2019, 40(4): 1351-1357.
[10]	谌文武, 刘伟, 王娟, 孙冠平, 吴玮江, . 黄土饱和度与B值关系试验研究[J]. 岩土力学, 2019, 40(3): 834-842.
[11]	张玉伟, 翁效林, 宋战平, 谢永利, . 考虑黄土结构性和各向异性的修正剑桥模型[J]. 岩土力学, 2019, 40(3): 1030-1038.
[12]	王丽琴, 邵生俊, 王帅, 赵聪, 石鹏鑫, 周彪, . 原状黄土的压缩曲线特性[J]. 岩土力学, 2019, 40(3): 1076-1084.
[13]	冯君, 王洋, 张俞峰, 黄林, 何长江, 吴红刚, . 玄武岩纤维与钢筋锚杆锚固性能现场对比试验研究[J]. 岩土力学, 2019, 40(11): 4185-4193.
[14]	叶帅华, 赵壮福, 朱彦鹏, . 框架锚杆支护黄土边坡大型振动台模型试验研究[J]. 岩土力学, 2019, 40(11): 4240-4248.
[15]	王道远, 袁金秀, 朱永全, 刘佳, 王洪凡, . 硬塑－流塑浅埋黄土隧道变形特性及合理预留变形量模型试验研究[J]. 岩土力学, 2019, 40(10): 3813-3822.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed