Broken Stone Gradation Research Under Maximum Shear Strength

doi:10.3969/j.issn.1674-0696.2014.06.13

Journal of Chongqing Jiaotong University(Natural Science) ›› 2014, Vol. 33 ›› Issue (6): 59-62.DOI: 10.3969/j.issn.1674-0696.2014.06.13

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Broken Stone Gradation Research Under Maximum Shear Strength

Xing Xinkui^1,2, ², Teng Detao¹, Zhang Jiawen¹, Liu Jing¹, Sun Guanxiao¹

1. College of Civil Engineering & Architecture, Guilin University of Technology, Guilin 541004, Guangxi, China; 2. Guangxi Key Laboratory of Geomechanics & Geotechnical Engineering, Guilin 541004, Guangxi, China

Received:2013-04-21 Revised:2013-10-21 Online:2014-12-15 Published:2015-03-10

基于最大抗剪强度的碎石配比研究

邢心魁^1,2，滕德涛¹，张家文¹，刘晶¹，孙冠晓¹

1. 桂林理工大学土木与建筑工程学院，广西桂林 541004； 2. 广西岩土力学与工程重点实验室，广西桂林 541004

作者简介:邢心魁（1964—)，男，河南漯河人，教授，博士，主要从事岩土工程原位测试与数值仿真分析、地下工程等方面的研究。E-mail:597983647@qq.com。
基金资助:
国家自然科学基金项目（51068004)；广西岩土力学与工程重点实验室基金资助项目（11-CX-03)

Abstract

Abstract: By the graded broken stone gradation theory, the gradation design method was proposed based on the greatest shearing strength. The self-made large direct shear apparatus was applied to carry out the shearing strength experiment to the design gradation. The relations of the shearing strength, the crushed stone allocated proportion and compactness were analyzed, and compared with standard design grading. The test results show that the designed gradation can improve aggregate's performance. The graded broken stone scope of present standard could be supplemented in order to design and control construction conveniently, and to enhance the graded broken stone operational performance.

Key words: road engineering, graded crushed rock, grading macadam ratio, shear strength, internal friction angle, void fraction

摘要： 通过级配碎石的级配理论，提出基于最大抗剪强度的级配设计方法，并应用自制的组装式大型直剪仪，对设计的级配进行抗剪强度试验，同时分析了抗剪强度与碎石配比和密实度的关系，并与规范给出的设计级配进行对比。对试验结果进行分析，得出自行设计的级配能使集料的性能得到更好的发挥。可以补充、完善现行规范中级配碎石的范围,便于设计和施工控制,提高级配碎石使用性能。

关键词: 道路工程, 碎石, 碎石配比, 抗剪强度, 内摩擦角, 空隙率

CLC Number:

U414.1

Xing Xinkui,Teng Detao, Zhang Jiawen, Liu Jing, Sun Guanxiao. Broken Stone Gradation Research Under Maximum Shear Strength[J]. Journal of Chongqing Jiaotong University(Natural Science), 2014, 33(6): 59-62.

邢心魁，滕德涛，张家文，刘晶，孙冠晓. 基于最大抗剪强度的碎石配比研究[J]. 重庆交通大学学报（自然科学版）, 2014, 33(6): 59-62.

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Broken Stone Gradation Research Under Maximum Shear Strength

基于最大抗剪强度的碎石配比研究

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