中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2018, Vol. 37 ›› Issue (1): 66-71.DOI: 10.3969/j.issn.1674-0696.2018.01.11

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

无砂垫层真空预压联合水袋堆载法加固超软地基应用研究

王海建1,杨建贵2,曹健勇1,田艳梅3,彭劼3   

  1. (1.中交上航局航道建设有限公司,浙江 宁波 315200;2.南京市水务工程建设管理中心,江苏 南京 210017; 3.河海大学 土木与交通学院,江苏 南京 210098)
  • 收稿日期:2016-09-25 修回日期:2017-03-16 出版日期:2018-01-15 发布日期:2018-01-15
  • 作者简介:王海建(1984—),男,河南项城人,工程师,主要从事围堤吹填及处理技术方面的研究。E-mail:haijianwang2008@yeah.net。
  • 基金资助:
    国家自然科学基金项目(51578214)

Improvement of Ultra Soft Soil by Vacuum Preloading Combined with Water Bag Method of Sand Free Cushion

WANG Haijian1,YANG Jiangui2,CAO Jianyong1,TIAN Yanmei3,PENG Jie3   

  1. (1. SDC Waterway Construction Co. Ltd., Ningbo 315200, Zhejiang, P. R. China;2.Nanjing Water Affairs Engineering Construction Management Center,Nanjing 210017,Jiangsu,P.R.China;3. College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, Jiangsu, P. R. China)
  • Received:2016-09-25 Revised:2017-03-16 Online:2018-01-15 Published:2018-01-15

摘要: 结合实际工程,通过试验研究了无砂垫层真空联合水袋预压法加固超软地基的效果,试验结果表明该方法能够有效提高地基承载力,跟常规的真空 预压法比较,加固效果更好,能够增大硬壳层的厚度和土体的有效加固深度;对真空膜面覆水预压法进行了比较、分析,讨论了真空膜面覆水预压法存在 的缺陷,特别是在产生“循环水”的情况下该方法的失效性。

关键词: 岩土工程, 真空预压, 水袋预压, 地基承载力, 覆水预压

Abstract: Combined with the actual project, the effect of ultra-soft foundation reinforced by vacuum combined with water bag preloading method of sand free cushion was studied by the tests. The experiment results show that the proposed method can effectively improve the bearing capacity of foundation. Compared with the conventional vacuum preloading method, the reinforcement effect of the proposed method is better, and it can increase the thickness of the hard shell layer and the effective reinforcement depth of the soil. The vacuum film surface overlying water preloading method was compared and analyzed, and its defects and failure especially in the case of “cyclic water” were discussed.

Key words: geotechnical engineering, vacuum preloading, water bag preloading, the bearing capacity of foundation;overlying water preloading

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