加载方式和应力水平对珊瑚砂颗粒破碎影响的试验研究

doi:10.13722/j.cnki.jrme.2017.1646

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (326 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The relationship between particle crushing and grain group transformation under different loading conditions and stress levels of coral calcareous sand(CCS) from Xisha islands is investigated in this study. A series of tests were carried out，such as the oedometer test，triaxial compression test，simple shear test and cyclic shear test. The growth rate of particle crushing is adopted to analyze the crushing behavior of particles. The results indicate that the crushing growth rate of CCS decreases rapidly to zero with the increasing of loading cycles. The increasing of stress level accelerates the reduction of the growth rate of particle crushing，and arrives at the stable state of crushing sooner. It is proposed according to the test results that the particle crushing reaches its limit when the particle crushing growth rate is less than a small value. The limit value can be used in engineering practice. The mechanical parameters of the CCS corresponding to the limit value can be used as the extreme value in the design for the most unfavorable or most favorable situation in real project. Samples with higher contact force but insufficient relative motion between particles are lack of regularity in particle group transformation after crushing，while the samples with full relative motion between particles have the particle group transformation with obvious similarity and good regularity. The particle size of 0.25 mm is a critical point where the grain group content will be changed from variation to a stable growth state. The distribution of particle crushing can be divided into domains of particle size increasing and particle size losing. The particle size losing domain is correspond to the inflection interval of particle distribution curve under the same coordinate model of particle size.

Key words： soil mechanics coral calcareous sand particle crushing crushing rate loading condition cyclic shear

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	JI Wendong1
	2
	ZHANG Yuting1
	2
	PEI Wenbin1
	2
	ZUO Dianjun1
	2

Cite this article:

JI Wendong1,2,ZHANG Yuting1, et al. Influence of loading method and stress level on the particle crushing of coral calcareous sand[J]. , 2018, 37(8): 1953-1961.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.1646 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/I8/1953

[1] 吴京平，褚瑶，楼志刚. 颗粒破碎对钙质砂变形及强度特性的影响[J]. 岩土工程学报，1997，19(5)：49–55.(WU Jingping，ZHU Yao，LOU Zhigang. Influence of particle breakage on deformation and strength properties of calcareous sands[J]. Chinese Journal of Geotechnical Engineering，1997，19(5)：49–55.(in Chinese))
[2] 刘崇权，汪稔. 颗粒破碎对钙质土力学特性的影响[J]. 岩土力学，2002，23(增1)：13–16.(LIU Zongquan，WANG Ren. Influences of particles crushing on mechanical properties of calcareous soil[J]. Rock and Soil Mechanics，2002，23(Supp.1)：13–16.(in Chinese))
[3] 王新志. 南沙群岛珊瑚礁工程地质特性及大型工程建设可行性研究[博士学位论文][D]. 武汉：中国科学院武汉岩土力学研究所，2008.(WANG Xinzhi. Study on engineering geological properties of coral reefs and feasibility of large project construction on nansha islands[Ph. D. Thesis][D]. Wuhan：Institute of Rock and Soil Mechnics，Chinese Academy of Sciences，2008.(in Chinese))
[4] 王新志，汪稔，孟庆山，等. 钙质砂室内载荷试验研究[J]. 岩土力学，2009，31(1)：147–151.(WANG Xinzhi，WANG Ren， MENG Qingshan，et al. Study of plate load test of calcareous sand[J]. Rock and Soil Mechanics，2009，31(1)：147–151.(in Chinese))
[5] 朱长歧，周斌，刘海峰. 胶结钙质土的室内试验研究进展[J]. 岩土力学，2015，36(2)：311–319.(ZHU Changqi，ZHOU Bin， LIU Haifeng. State-of-the-art review of developments of laboratory tests on cemented calcareous soils[J]. Rock and Soil Mechanics，2015，36(2)：311–319.(in Chinese))
[6] 纪文栋，张宇亭，裴文斌，等. 钙质珊瑚砂液化特性的动三轴试验研究[J]. 水道港口，2018，39(1)：101–106.(JI Wendong，ZHANG Yuting，PEI Wenbin，et al. Study on the coral sand liquefaction characteristics by dynamic triaxial test[J]. Journal of Waterway and Harbor，2018，39(1)：101–106.(in Chinese))
[7] NAKATA Y，HYODO M，ADRIAN F L H，et al. Microscopic particle crushing of sand subjected to high pressure one-dimensional compression[J]. Journal of the Japanese Geotechnical Society：Soils and Foundation，2001，41(1)：62–82.
[8] 张家铭，汪稔，石祥锋，等. 侧限条件下钙质砂压缩和破碎特性试验研究[J]. 岩石力学与工程学报，2005，24(18)：3 327–3 331. (ZHANG Jiaming，WANG Ren，SHI Xiangfeng，et al. Compression and crushing behavior of calcareous sand under confined compression[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(18)：3 327–3 331.(in Chinese))
[9] 张家铭，蒋国盛，汪稔. 颗粒破碎及剪胀对钙质砂抗剪强度影响研究[J]. 岩土力学，2009，31(7)：2 043–2 048.(ZHANG Jiaming，JIANG Guosheng，WANG Ren. Research on influences of particle breakage and dilatancyon shear strength of calcareous sand[J]. Rock and Soil Mechanics，2009，31(7)：2 043–2 048.(in Chinese))
[10] 张家铭，张凌，蒋国盛，等. 剪切作用下钙质砂颗粒破碎试验研究[J]. 岩土力学，2008，29(10)：2 789–2 793.(ZHANG Jiaming，ZHANG Ling，JIANG Guosheng，et al. Research on particle crushing of calcareous sands under triaxial shear[J]. Rock and Soil Mechanics，2008，29(10)：2 789–2 793.(in Chinese))
[11] 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.(SUN Jizhu，WANG Ren. Study on particle failure process of calcareous sand under triaxial compression[J]. Rock and Soil Mechanics，2003，24(5)：822–825.(in Chinese))
[12] 孙吉主，汪稔. 钙质砂的颗粒破碎和剪胀特性的围压效应[J]. 岩石力学与工程学报，2004，23(4)：641–644.(SUN Jizhu，WANG Ren. Influence of confining pressure on particle breakage and shear expansion of calcareous sand[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(4)：641–644.(in Chinese))
[13] 刘崇权，汪稔，吴新生. 钙质砂物理力学性质试验中的几个问题[J]. 岩石力学与工程学报，1999，18(2)：209–212.(LIU Chongquan，WANG Ren，WU Xinsheng. Several problems in tests for physical and mechanical properties of calcareous sands[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(2)：209–212.(in Chinese))
[14] 秦月，姚婷，汪稔，等. 基于颗粒破碎的钙质沉积物高压固结变形分析[J]. 岩土力学，2014，35(11)：3 123–3 128.(QIN Yue，YAO Ting，WANG Ren，et al. Particle breakage-based analysis of deformation law of calcareous sediments under high-pressure consolidation[J]. Rock and Soil Mechanics，2014，35(11)：3 123– 3 128. (in Chinese))
[15] 刘汉龙，孙逸飞，杨贵. 粗粒料颗粒破碎特性研究述评[J]. 河海大学学报：自然科学版，2012，40(4)：361–369.(LIU Hanlong，SUN Yifei，YANG Gui. A review of particle breakage characteristics of coarse aggregates[J]. Journal of Hohai University：Natural Science，2012，40(4)：361–369.(in Chinese))
[16] 傅华，凌华，蔡正银. 粗颗粒土颗粒破碎影响因素试验研究[J]. 河海大学学报：自然科学版，2009，37(1)：75–79.(FU Hua，LIN Hua，CAI Zhengyin. Influencing factors for particle breakage of coarse grained soil[J]. Journal of Hohai University：Natural Science，2009，37(1)：75–79.(in Chinese))
[17] 中华人民共和国行业标准编写组. GBT50123—1999 土工试验方法标准[S]. 北京：中国计划出版社，1999.(The Professional Standards Compilation Group of People?s Republic of China. GBT50123—1999 Standard for soil test method[S]. Beijing：China Planning Press，1999.(in Chinese))
[18] MARSALR J. Large-scale testing of rockfill materials[J]. Journal of the Soil Mechanics and Foundations Division，1967，93(2)：27–43.
[19] COOP M R，SORENSEN K K，FREITAS T B，et al. Particle breakage during shearing of a carbonate sand[J]. Geotechnique，2004，54(3)：157–163.
[20] INDRARATNA B，LACKENBYACKENBY J，CHRISITE D. Effect of confining pressure on the degradation of ballast under cyclic loading[J]. Geotechnique，2005，55(4)：325–328.
[21] MCDOWELL G R. On the yielding and plastic compression of sand[J]. Journal of the Japanese Geotechnical Society：Soils and Foundation，2002，42(1)：139–145.