土工基础

›› 2012, Vol. 26 ›› Issue (4): 24-26.

• 工程实录 • 上一篇    下一篇

提高软基深层加固效果的措施

张 朋，熊 熙，曹 辉   

  1. 桂林理工大学土木与建筑工程学院，广西桂林 541004
  • 收稿日期:2011-10-24 出版日期:2012-08-20 发布日期:2012-09-07
  • 作者简介:张朋（1985-），在读研究生。

Techniques Improving Soft Soils at Greater Depths

 ZHANG Peng, XIONG Xi, CAO Hui   

  1. College of Civil Engineering and Architecture, Guilin University of Science and Technology, Guilin,Guangxi 541004
  • Received:2011-10-24 Online:2012-08-20 Published:2012-09-07

摘要： 经过现场对广东某高速公路监测断面的观测及试验资料分析发现，排水通道形式对深层软基加固有很大影响。研究表明，不同竖向排水通道中真空度的传递规律是不同的，对地基的真空预压加固效果的影响也不同。最后提出了能够有效减少真空压力沿程损失和消除地基深层沉降的新型竖向排水通道形式。

关键词: 排水通道, 加固效果, 真空度, 软基

Abstract: Two sections of typical geotechnical instrumentation monitoring results for vacuum preloading improvements of thick soft soils at an expressway construction site in Guangdong are presented in this paper. The monitoring data indicate that the patterns of the drainage path have a large effect on the improvement results of soft soils at deep depths. Further studies demonstrate that the degree of vacuum has a different transfer pattern in various vertical prefabricated drains. A new vertical drain pattern that can effectively reduce the vacuum loss is proposed. Better soil improvement results for soft soils at greater depths can therefore be achieved.

Key words: Drainage Pattern, Soil Improvement Results, Degree of Vacuum, Soft Soil