Experimental study on maximum dry density of scaled coarse-grained soil

CHU Fu-yong; ZHU Jun-gao; WENG Hou-yang; YE Yang-fan

doi:10.16285/j.rsm.2019.0780

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Experimental study on maximum dry density of scaled coarse-grained soil

更新时间：2026-06-25

- Experimental study on maximum dry density of scaled coarse-grained soil
- Vol. 41, Issue 5, Pages: 1599-1604(2020)
- 作者机构：
  
  1. 丽水学院土木工程系,浙江,丽水,323000
  2. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏,南京,210098
  3. 宏润建设集团有限公司,浙江,宁波,315700
  4. 浙江省工程物探勘察院,浙江,杭州,310005
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2019.0780
  CLC： TV41
- Online First：07 July 2020，
  
  Published：2020
- 稿件说明：
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CHU Fu-yong, ZHU Jun-gao, WENG Hou-yang, et al. Experimental study on maximum dry density of scaled coarse-grained soil[J]. 2020, 41(5): 1599-1604.
DOI：

CHU Fu-yong, ZHU Jun-gao, WENG Hou-yang, et al. Experimental study on maximum dry density of scaled coarse-grained soil[J]. 2020, 41(5): 1599-1604. DOI： 10.16285/j.rsm.2019.0780.

摘要

对某级配粗粒料，采用剔除法、等量替代法、相似级配法和混合法等4种不同缩尺方法，依据规范要求进行缩尺。缩尺后替代级配料的最大颗粒粒径分别为20、40、60 mm。对各替代级配料采用振动台法进行了最大干密度试验，基于试验成果，结合分形理论，提出了一种将最大干密度与级配及细粒含量之间关系归一化的方法，并拟合了最大干密度与试验前级配的分形维数、小于5 mm颗粒的含量及最大粒径之间的关系，据此可推求出原型级配料的最大干密度，探讨了缩尺方法对替代料试验前后粒径分布曲线变化幅度的影响，总结出颗粒破碎分形维数与试验前级配的分形维数、小于5 mm颗粒含量及最大粒径之间的关系式，据此可推求出填筑后原型级配料的颗粒破碎分形维数。

Abstract

According to the specification of scale reduction

four different scale reduction methods

including scalping method

equal-weight replacement method

similar grading method and mixing method

are used to reduce the scale of a coarse-grained soil into a grading with smaller particles

namely 20 mm

40 mm and 60 mm.. A number of the maximum dry density tests are conducted by the vibrating method. Based on the test results and fractal theory

a normalizing method is proposed to describe the relationship between maximum dry density

grading and content of fine grains. Based on the newly proposed normalizing method

the relationship of dry density versus fractal dimension before tests and the content of grains smaller than 5 mm and maximum particle size is found. According to the founded relation

the maximum dry density of the real gradation is determined. In addition

the effect of scale reduction method on the variation amplitude of grain size distribution curves of coarse-grained soil specimens before and after tests is studied. And the relationship of fractal dimension of particle breakage versus fractal dimension before tests coefficient

the content of grains smaller than 5 mm and the maximum particle size is found. Based on the newly summarized relation

the fractal dimension of particle breakage of the real gradation after filling can be determined.

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