›› 2016, Vol. 37 ›› Issue (S2): 421-426.doi: 10.16285/j.rsm.2016.S2.055

• 基础理论与实验研究 • 上一篇    下一篇

纤维水泥土力学性能的试验研究

鹿 群1, 2, 3,郭少龙1, 2,王闵闵2,高 萌2   

  1. 1.中国电力建设集团 华东勘测设计研究院有限公司,浙江 杭州,310014;2.天津城建大学 土木工程学院,天津300384; 3.天津城建大学 天津市软土特性与工程环境重点实验室,天津 300384
  • 收稿日期:2016-07-27 出版日期:2016-11-11 发布日期:2018-06-09
  • 通讯作者: 郭少龙,男,1988年生,硕士,讲师,主要从事岩土工程方面的教学与研究工作。E-mail:1801359295@qq.com E-mail: zdlq585@126.com
  • 作者简介:鹿群,男,1970年生,博士,教授,主要从事软土地基处理方面的研究。
  • 基金资助:
    中国电力建设集团科技项目(No. SD2013-10)

Experimental study of mechanical properties of fiber cement soil

LU Qun1, 2, 3, GUO Shao-long1, 2, WANG Min-min2, GAO Meng2   

  1. 1. Power Construction Corporation of China, Huadong Engineering Corporation Limited, Hangzhou, Zhejiang 310014, China; 2. School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China; 3. Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin Chengjian University, Tianjin 300384, China
  • Received:2016-07-27 Online:2016-11-11 Published:2018-06-09
  • Supported by:
    This work was supported by the Science and Technology Program of Power Construction Corporation of China (SD2013-10).

摘要: 为了解加入纤维对水泥土力学性能的影响,对素水泥土及纤维水泥土进行了无侧限抗压和疲劳试验。研究结果表明,添加纤维可小幅度提高水泥土的抗压强度;与素水泥土相比,纤维水泥土在达到应力峰值时的应变明显增大,破坏后的残余强度也有所提高;纤维的加入提高了水泥土的延性,减少了裂缝的开展,改善了其力学性能;添加纤维后水泥土抵抗疲劳的能力明显增强;掺入纤维对水泥土抗疲劳能力的提高程度远大于其对水泥土无侧限强度的提高程度;水泥土的应力水平和疲劳寿命之间具有单对数线性关系;在循环荷载作用下水泥土表现为低应力性破裂特征。

关键词: 水泥土, 纤维水泥土, 疲劳试验

Abstract: In order to understand the influence of fiber on the mechanical properties of cement soil, the unconfined compression test and fatigue test of cement soil and fiber reinforced cement soil are carried out. The results show that the compressive strength of cement soil can be improved slightly by adding fiber. Compared with plain cement soil, the strain of fiber cement soil increases obviously at the stress peak point; and its residual strength after failure also increases. The addition of fiber improves the ductility of the cement soil, reduces the crack development and improves its mechanical properties. After the fiber is added, the antifatigue ability of cement soil is significantly increased. The degree of the improvement of cement soil fatigue resistance is much greater than that of unconfined strength of cement soil. The relationship between stress level and fatigue life of cement soil is single logarithm linear. The cement soil is characterized by low stress rupture under cyclic loading.

Key words: cement soil, fiber reinforced cement soil, fatigue test

中图分类号: 

  • TU 761
[1] 张振, 张朝, 叶观宝, 王萌, 肖彦, 程义, . 劲芯水泥土桩承载路堤渐进式失稳破坏机制[J]. 岩土力学, 2020, 41(6): 2122-2131.
[2] 陈 军, 梁文鹏, 应宏伟, . 大直径水泥土锚索合理间距的试验与数值研究[J]. 岩土力学, 2018, 39(S2): 374-380.
[3] 马芹永,高常辉,. 冲击荷载下玄武岩纤维水泥土吸能及分形特征[J]. , 2018, 39(11): 3921-3928.
[4] 许胜才,张信贵,马福荣,陈子兴, . 水泥土桩加固边坡变形破坏特性及模型试验分析[J]. , 2017, 38(11): 3187-3196.
[5] 周佳锦,龚晓南,王奎华,张日红,王孟波,. 层状地基中静钻根植竹节桩单桩沉降计算[J]. , 2017, 38(1): 109-116.
[6] 胡秀青,董全杨,吕程伟,王 军,庄心善,. 水泥土搅拌桩软土地基土体动力特性的共振柱试验研究[J]. , 2016, 37(S2): 343-348.
[7] 徐 平,张天航,孟芳芳,. 工字钢水泥土搅拌墙基坑支护的力学性能研究[J]. , 2016, 37(S2): 769-774.
[8] 宋新江,徐海波,周文渊,王 伟,. 水泥土应力-应变特性真三轴试验研究[J]. , 2016, 37(9): 2489-2495.
[9] 周佳锦,王奎华,龚晓南,张日红,严天龙,. 静钻根植竹节桩桩端承载性能试验研究[J]. , 2016, 37(9): 2603-2609.
[10] 叶观宝 ,蔡永生 ,张 振 , . 加芯水泥土桩复合地基桩土应力比计算方法研究[J]. , 2016, 37(3): 672-678.
[11] 刘松玉,郑 旭,蔡光华,曹菁菁, . 活性MgO碳化固化土的抗硫酸盐侵蚀性研究[J]. , 2016, 37(11): 3057-3064.
[12] 牛亚强 ,王 旭 ,郑 静 ,蒋代军 ,刘德仁 ,蒋鹏程 , . 侧向约束防渗路基新结构防渗效果试验研究[J]. , 2015, 36(S2): 252-258.
[13] 何 平 ,徐中华 ,王卫东 ,李 青 , . 基于土体小应变本构模型的TRD工法成墙试验数值模拟[J]. , 2015, 36(S1): 597-601.
[14] 周佳锦 ,龚晓南 ,王奎华 ,张日红 ,许远荣,. 静钻根植竹节桩桩端承载性能数值模拟研究[J]. , 2015, 36(S1): 651-656.
[15] 陈四利 ,杨雨林 ,周 辉 ,胡大伟,. 污水环境对水泥土渗透性能影响的试验研究[J]. , 2015, 36(11): 3047-3054.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!