冲击碾压法处理粉土地基试验研究

›› 2011, Vol. 32 ›› Issue (S2): 389-392.

冲击碾压法处理粉土地基试验研究

徐超¹，陈忠清¹，叶观宝¹，肖媛媛²，丁天锐³

1．同济大学岩土及地下工程教育部重点实验室，上海 200092；2．上海民航新时代机场设计研究院有限公司，上海 200335； 3．江苏省淮安市机场建设办公室，淮安 223000

收稿日期:2011-05-10 出版日期:2011-08-10 发布日期:2011-08-26
作者简介:徐超，男，1965年生，博士，教授，主要从事地基处理与土工合成材料方面的教学与研究工作
基金资助:
江苏省交通科学研究计划项目（No. 09Y03）；上海市重点学科建设项目资助（No. B308）

Experimental research on ground improvement of silt using impact roller compaction

XU Chao¹, CHEN Zhong-qing¹, YE Guan-bao¹, XIAO Yuan-yuan², DING Tian-rui³

1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Shanghai CAAC New Era Airport Design & Research Institute Co., Ltd., Shanghai 200335, China; 3. Huai’an Airport Construction Headquarters, Huai’an, Jiangsu 223000, China

Received:2011-05-10 Online:2011-08-10 Published:2011-08-26

摘要/Abstract

摘要： 冲击碾压法作为一种高效、经济的压实技术，已经广泛应用于各种路基压实和软基处理等领域，并不断被应用于新的领域。通过现场试验，结合试验过程中地下水位、地表沉降和孔隙水压力等项目的监测结果以及处理后标准贯入试验和静力触探试验的检测成果，探讨了冲击碾压法用于消除浅层粉土地基液化的有效性和相应的施工工艺。试验研究表明，采用冲击碾压法可消除浅层粉土地基的液化，并且2 m深度范围内地基土的压实效果明显。研究成果证明了冲击碾压法在消除浅层地基液化领域的适用性。

关键词: 地基处理, 冲击碾压法, 粉土, 液化, 原位测试

Abstract: As an efficient and cost-effective compaction technique, the impact roller compaction method has been widely used in the ground improvement of subgrade or soft subsoil of many kinds of projects and is gradually applied to other new fields. An experimental study was made, which focused on the suitability and construction technique of eliminating silt liquefaction using impact roller compaction. During the trial programme several items such as surface settlement and excess pore water pressure were monitored, and in-situ tests such as standard penetration test (SPT) and cone penetration test (CPT) were carried out. The results show that after 20 passes of impact roller compaction the liquefaction of silt is eliminated and the subsoil up to the depth of 2 m is well improved. The output of this research work increases the confidence of using impact roller compaction technique in the field of shallow ground liquefaction treatment.

Key words: ground improvement, impact roller compaction, silt, liquefaction, in-situ test

中图分类号:

TU 449

徐超，陈忠清，叶观宝，肖媛媛，丁天锐. 冲击碾压法处理粉土地基试验研究[J]. , 2011, 32(S2): 389-392.

XU Chao , CHEN Zhong-qing , YE Guan-bao , XIAO Yuan-yuan , DING Tian-rui. Experimental research on ground improvement of silt using impact roller compaction[J]. , 2011, 32(S2): 389-392.

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