[1]张永康,李永强,刘旭锋,等.组构形态对钙质砂颗粒破碎演化规律的影响[J].福建理工大学学报,2026,24(01):44-51.[doi:10.3969/j.issn.2097-3853.2026.01.006]
 ZHANG Yongkang,LI Yongqiang,LIU Xufeng,et al.Influence of fabric morphology on evolution law of particle fragmentation in calcareous sand[J].Journal of Fujian University of Technology;,2026,24(01):44-51.[doi:10.3969/j.issn.2097-3853.2026.01.006]
点击复制

组构形态对钙质砂颗粒破碎演化规律的影响()
分享到:

《福建理工大学学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第24卷
期数:
2026年01期
页码:
44-51
栏目:
出版日期:
2026-02-25

文章信息/Info

Title:
Influence of fabric morphology on evolution law of particle fragmentation in calcareous sand
作者:
张永康李永强刘旭锋卢星雨刘文静周泌
东华理工大学土木与建筑工程学院
Author(s):
ZHANG Yongkang LI Yongqiang LIU Xufeng LU Xingyu LIU Wenjing ZHOU Mi
School of Civil & Architecture Engineering, East China University of Technology
关键词:
钙质砂级配曲线破碎指数颗粒破碎大型三轴仪
Keywords:
calcareous sandgradation curvefragmentation indexparticle fragmentationlarge triaxial instrument
分类号:
TU411
DOI:
10.3969/j.issn.2097-3853.2026.01.006
文献标志码:
A
摘要:
以南海某吹填岛礁钙质砂为试验材料,使用大型三轴仪进行了系统的三轴剪切试验,研究了不同组构钙质砂在三轴条件下的颗粒破碎演化规律。试验结果表明,在相同围压下,钙质砂颗粒粒径越大破碎程度越显著,且随着围压的增大,同一粒径颗粒的破碎程度也随之增加。围压是影响钙质砂剪胀特性的重要因素,随着围压增大,砂样的剪胀行为受到约束,颗粒破碎程度加剧。特征粒径值随围压增大而减小,不均匀系数Cu 随围压增大而增大,总体反映了级配向更好的方向发展。相对破碎指数Br 与围压之间存在幂函数关系,随围压增大而增大。
Abstract:
A systematic triaxial shear test was conducted using a large-scale triaxial apparatus on calcareous sand from a certain reclaimed island in the South China Sea, so as to study the particle fragmentation evolution of calcareous sand with different compositions under triaxial conditions. Experimental results show that under the same confining pressure, the larger the particle size of calcareous sand, the more significant the degree of fragmentation, and with the increase of confining pressure, the degree of fragmentation of particles with the same particle size also increases. The confining pressure is an important factor affecting the shear dilation characteristics of calcareous sand. As the confining pressure increases, the shear dilation behavior of the sand sample is constrained, and the degree of particle fragmentation intensifies. The characteristic particle size value decreases with increasing confining pressure, and the non-uniformity coefficient Cu increases with increasing confining pressure, which generally reflects the development of gradation towards a better direction. There is a power function relationship between the relative fragmentation index Br and confining pressure, which increases with the increase of confining pressure.

参考文献/References:

[1] 胡杰铭. 基于分形理论的单一粒径组钙质砂蠕变试验研究[D]. 湘潭:湘潭大学,2021.[2] 孙吉主,汪稔. 三轴压缩条件下钙质砂的颗粒破裂过程研究[J]. 岩土力学,2003,24(5):822-825. [3] SHAHNAZARI H,REZVANI R. Effective parameters for the particle breakage of calcareous sands:an experimental study[J]. Engineering Geology,2013,159:98-105. [4] HARDIN B O. Crushing of soil particles[J]. Journal of Geotechnical Engineering,1985,111(10):1177-1192.[5] 蔡正银,陈元义,朱洵,等. 级配对珊瑚砂颗粒破碎与变形特性的影响[J]. 岩土工程学报,2023,45(4):661-670.[6] HU W,YIN Z Y,SCARINGI G,et al. Relating fragmentation,plastic work and critical state in crushable rock clasts[J]. Engineering Geology,2018,246:326-336. [7] COOP M R,SORENSEN K K,FREITAS T B,et al. Particle breakage during shearing of a carbonate sand[J]. Géotechnique,2004,54(3):157-163.[8] YU F W. Characteristics of particle breakage of sand in triaxial shear[J]. Powder Technology,2017,320:656-667.[9] 王嘉璐,张升,童晨曦,等. 基于染色标定的钙质砂颗粒破碎级配转移矩阵试验研究[J]. 岩土力学,2022,43(8):2222-2232.[10] 汪轶群,洪义,国振,等. 南海钙质砂宏细观破碎力学特性[J]. 岩土力学,2018,39(1):199-206,215.[11] 张家铭,张凌,刘慧,等. 钙质砂剪切特性试验研究[J]. 岩石力学与工程学报,2008(S1):3010-3015.[12] LEE K L,FARHOOMAND I. Compressibility and crushing of granular soil in anisotropic triaxial compression[J]. Canadian Geotechnical Journal,1967,4(1):68-86. [13] LADE P V,YAMAMURO J A,BOPP P A. Significance of particle crushing in granular materials[J]. Journal of Geotechnical Engineering,1996,122(4):309-316.[14] 张家铭. 钙质砂基本力学性质及颗粒破碎影响研究[D]. 武汉:中国科学院研究生院(武汉岩土力学研究所),2004.[15] 胡波. 三轴条件下钙质砂颗粒破碎力学性质与本构模型研究[D]. 武汉:中国科学院研究生院(武汉岩土力学研究所),2008. [16] WEI H Z,LI X X,ZHANG S D,et al. Influence of particle breakage on drained shear strength of calcareous sands[J]. International Journal of Geomechanics,2021,21(7):04021118.

更新日期/Last Update: 2026-02-25