吕梁地区压实马兰黄土变形与抗剪强度特性

胡长明, 梅源, 王雪艳

胡长明, 梅源, 王雪艳. 吕梁地区压实马兰黄土变形与抗剪强度特性[J]. 工程力学, 2013, 30(10): 108-114. DOI: 10.6052/j.issn.1000-4750.2012.06.0441
引用本文: 胡长明, 梅源, 王雪艳. 吕梁地区压实马兰黄土变形与抗剪强度特性[J]. 工程力学, 2013, 30(10): 108-114. DOI: 10.6052/j.issn.1000-4750.2012.06.0441
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HU Chang-ming, MEI Yuan, WANG Xue-yan. DEFORMATION AND SHEARING STRENGTH CHARACTERISTIC OF COMPACTED MALAN LOESS IN L#x000dc;LIANG REGION[J]. Engineering Mechanics, 2013, 30(10): 108-114. DOI: 10.6052/j.issn.1000-4750.2012.06.0441
Citation: HU Chang-ming, MEI Yuan, WANG Xue-yan. DEFORMATION AND SHEARING STRENGTH CHARACTERISTIC OF COMPACTED MALAN LOESS IN L#x000dc;LIANG REGION[J]. Engineering Mechanics, 2013, 30(10): 108-114. DOI: 10.6052/j.issn.1000-4750.2012.06.0441
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吕梁地区压实马兰黄土变形与抗剪强度特性

  • 1.

    西安建筑科技大学土木工程学院，陕西，西安710055；

  • 2.

    西安建筑科技大学华清学院，陕西，西安710043

基金项目: 陕西省科技攻关计划项目(2011k10-20)
详细信息
    作者简介:

    梅源(1983―)，男，河南信阳人，博士生，从事岩土力学研究(E-mail: my0326@126.com)； 王雪艳(1984―)，女，河南许昌人，助教，硕士，从事施工技术研究(E-mail: wxy19860412@163.com).

    通讯作者:

    胡长明(1963―),男,河南信阳人,教授,博士,博导,从事力学及施工技术的教学与科研工作(E-mail:hu.tm@163.com).

  • 中图分类号: TU472

DEFORMATION AND SHEARING STRENGTH CHARACTERISTIC OF COMPACTED MALAN LOESS IN L#x000dc;LIANG REGION

  • 1.

    College of Civil Engineering, 02019;an University of Architecture and Technology, 02019;an, Shaanxi 710055, China;

  • 2.

    Huaqing College, 02019;an University of Architecture and Technology, 02019;an, Shaanxi 710043, China

摘要

    摘要
  • 摘要: 针对吕梁地区压实马兰黄土的变形及抗剪强度特性开展了压缩及直剪试验研究，分析了初始压实度及初始含水量与抗剪强度指标之间的关系及其对土体压缩变形的影响，并基于割线模量法提出了压实马兰黄土在初始压实度及初始含水量变化时的变形修正公式。研究结果表明：压实马兰黄土初始含水量w及初始压实度K与粘聚力c及内摩擦角#x003c6；呈线性关系；在不考虑压实度及含水量的影响时，侧限压缩应变#x003b5；与垂直压力p关系可用#x003b5；=kpn表达；压实马兰黄土割线模量Esoi与K呈线性关系，且与1/w的关系曲线与抛物线非常相似。建立的压实马兰黄土在初始压实度及初始含水量变化时的变形修正公式可以用于吕梁地区压实马兰黄土填筑地基变形分析与计算。
    Abstract: Compression tests and direct shear tests are carried out to study the deformation and the shearing strength characteristics of compacted Malan Loess in L#x000fc;liang region. Analyses are made on the relationship between the initial compaction degree as well as the initial water content and the shear strength indexes and on their effects on the compressive deformation of soil. By employing secant modulus method, the modified formula of deformation is established, when initial compaction degree and initial water content of compacted Malan loess has been changed. The results of the research show that the relationship between the initial water content was well as the initial compaction degree Kand the cohesion cas well as the angle of internal friction is linear, and that the relationship between the confined compression strain #x003b5;and the vertical pressure pcan be formulated as #x003b5;=kpnwithout consideration of the effects of compaction degree and water content. Moreover, the results indicate that the relationship between the secant modulusEsoiand Kis linear and that the relationship curve betweenEsoiand 1/wis similar to a parabola. Hence, when the initial compaction degree and the initial water content have been changed, the modified formula of deformation can be used to analyze and calculate the deformation compacted Malan Loess in L#x000fc;liang region.
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出版历程
  • 收稿日期:  2012-06-20
  • 修回日期:  2012-08-10
  • 刊出日期:  2013-10-24

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