强夯法施工参数的分析研究

›› 2006, Vol. 27 ›› Issue (9): 1628-1632.

强夯法施工参数的分析研究

吕秀杰¹，龚晓南²，李建国³

1.嘉兴学院建筑工程学院，嘉兴 314001；2.浙江大学土木工程系，杭州 310000； 3.嘉兴交通投资集团有限公司，嘉兴 314001

收稿日期:2005-09-08 出版日期:2006-09-11 发布日期:2013-11-28
作者简介:吕秀杰，女，1971年生，硕士，国家注册岩土工程师，主要从事岩土力学与工程的教学、科研工作。

Research on parameters of construction with dynamic compaction method

LÜ Xiu-jie¹, GONG Xiao-nan², LI Jian-guo³

1.College of Civil Engineering and Architecture , Jiaxing University, Jiaxing 314001, China; 2. Department of Civil Engineering, Zhejing University, Hangzhou 310000, China; 3.Jiaxing Communications Investment Group Co., Ltd, Jiaxing 314001, China

Received:2005-09-08 Online:2006-09-11 Published:2013-11-28

摘要/Abstract

摘要： 由强夯法加固机理出发，通过土体孔隙比、在粉土中夯点的布置形式、以及在湿陷性黄土中锤重、落距几方面的选择来探讨强夯法处理地基的效果，给出了在粉土及湿陷性黄土质中选用强夯参数时的几点建议：1.可用极限孔隙比作为夯击效果检测的标准。当极限孔隙比与夯击后土体的孔隙比接近，说明土体已被充分夯实。2.在小面积加固时，夯点采用三角形布置会取得更好的夯击效果，若加固面积较大时，在两种布置形式都能满足工程要求时，建议作经济分析后决定采用何种布置形式。3.在选择强夯法时，优先选用重锤低落距加固地基土。

关键词: 强夯法, 孔隙比, 湿陷性黄土, 粉土

Abstract: The effect of the dynamic compaction method (DCM) on the ground foundation was investigated by means of the elections of void ratio of soil, the arranging forms in the silty soil and collapsible loess ground foundation, the weight of hammer, the height of drop in the collapsible loess ground based on DCM’s reinforced principle. Some suggestions are put forward for selecting parameters, with relation to DCM in the silt and loess ground: 1.The critical void-ratio may be a standard that checks the effect of tamping; when the critical void-ratio is close to that after tamping, the solum will be compacted thoroughly. 2.The compacting points may get better effect with an equilateral triangular arrangement for a small area reinforcement; if a reinforced area is enough big, and both of those arrangements can be satisfied with engineering inquirement, of which the arrangement is suggested after economical analysis.3.The heavy hammer and the low height of drop in the collapsible loess ground is preferred when choosing DCM. These suggestions are very valuable for the promotion of the DCM and engineering practice.

Key words: DCM, void-ratio, collapsible loess ground, silty soil

中图分类号:

TU 472.3+1

吕秀杰，龚晓南，李建国，. 强夯法施工参数的分析研究[J]. , 2006, 27(9): 1628-1632.

Lü Xiu-jie，, GONG Xiao-nan , LI Jian-guo . Research on parameters of construction with dynamic compaction method[J]. , 2006, 27(9): 1628-1632.

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