| 干密度对击实黄土震陷性影响的试验研究 |
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| 引用本文： | 王兰民,袁中夏,王峻,孙崇绍.干密度对击实黄土震陷性影响的试验研究[J].地震工程与工程振动,2000,20(1):75-80. |
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| 作者姓名： | 王兰民 袁中夏 王峻 孙崇绍 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,兰州,730000;中国地震局工程力学研究所,哈尔滨,150080
2. 中国地震局兰州地震研究所,兰州,730000 |
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| 基金项目： | 中国地震局“九五”重点项目!95-05-02-03-03，中国地震局兰州地震研究所论著!LC1999071 |
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| 摘 要： | 干密度是表征黄土地基振密、挤密处理后土体紧密程度的一个重要物理指标。本文通过对不同干密度的非饱和击实土样的震陷试验，研究了干密度对击实黄土震陷性的定量影响规律，建立了击实黄土的震陷曲线方程，得到了不同振次下干密度与震陷系数的定量关系。文中提出了由干密度算不同振次和任一动应力下击实黄土震陷系数的经验公式，并为黄土地基抗震陷处理初步提供了干密度波速、标贯和孔隙比等方面的标准。
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| 关 键 词： | 击实黄土震陷 干密度 地基处理 试验研究 |
Laboratory study of effect of dry density on seismic settlement of compacted loess |
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| WANG Lan-min,YUAN Zhong-xia,Wang Jun,SUN Chong-shao.Laboratory study of effect of dry density on seismic settlement of compacted loess[J].Earthquake Engineering and Engineering Vibration,2000,20(1):75-80. |
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| Authors: | WANG Lan-min YUAN Zhong-xia Wang Jun SUN Chong-shao |
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| Abstract: | Dry density is one of the most important physical indexes to indicate the compactedness of loess after it is treated with various methods of compaction. In this paper,based on the seismic settlement test of unsaturated compacted loess specimens with different dry densities, the quantitative relationship between dry density and seisndc settlement of compacted loess is revealed in expressions of equations for seismic settlement curves. The authors established the mathematical relationship between dry density and seisforc settlement coefficient under different cyclic times and proposed empirical formulas to estimate the seismic settlement coefficient of compacted loess with dry density. Furthermore, the criteria in dry density, wave velocity, SPT and void ratio forxthe seismic treatment of loess ground are provided. |
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| Keywords: | compacted loess seismic settlement dry density effect treatment of ground |
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