东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (1): 299-302.DOI: -

• 论著 • 上一篇    下一篇

环境侵蚀对水泥土桩承载力影响的试验及分析

宁宝宽;刘斌;陈四利   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;沈阳工业大学建筑工程学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-01-15 发布日期:2013-06-24
  • 通讯作者: Ning, B.-K.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50474017)

Bearing capacity study of cement-mixed soil pile under environmental erosion

Ning, Bao-Kuan (1); Liu, Bin (1); Chen, Si-Li (2)   

  1. (1) Sch. of Resources and Civil Eng., Northeastern Univ., Shenyang 110004, China; (2) Coll. of Arch. and Civil Eng., Shenyang Univ. of Technol., Shenyang 110023, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-01-15 Published:2013-06-24
  • Contact: Ning, B.-K.
  • About author:-
  • Supported by:
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摘要： 通过试验模拟了具有一定水泥掺量的水泥土在各种环境因素(水、不同化学溶液、不同浓度以及不同pH值等)下的侵蚀作用,进行了水泥土试件90d的无侧限抗压强度试验·探讨了水泥土受各种环境因素的侵蚀效应、破裂行为与机理·结果表明,酸性和高浓度化学溶液侵蚀环境对水泥土力学性能的劣化明显;而碱性和部分低浓度化学溶液环境对水泥土力学性能具有一定促进作用·据此,对水泥土桩竖向承载力的设计公式进行了环境效应修正,提出了环境效应因子的概念,并对其取值进行了分析·

关键词: 水泥土, 环境侵蚀, 抗压强度, 水泥土桩, 竖向承载力

Abstract: Some testings were done under different conditions of environmental erosion, including water and chemical solutions with different concentrations and pH values, to simulate the erosion effect on the cement-mixed soil of which the mixing ratio is specified and the specimens were sampled from the silty clay soil about 3 m deep under a roadbed. The test of unconfined compression strength of cement-mixed soil was carried out with the specimens cured for 90 days. A conclusion showed that the strength of cement-mixed soil decreased in acid and high strength solutions. On the contrary, strength increased evidently in alkaline environment. Therefore, the design formula of upright bearing capacity of cement-mixed soil pile is modified due to environmental erosion, and a coefficient named environmental effect factor is proposed with its range of value discussed.

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