Measurement of dynamic compaction effect and analysis of technical parameters in reconstruction of old road to expressway

Lü Guo-ren; CUI Xin-zhuang

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Measurement of dynamic compaction effect and analysis of technical parameters in reconstruction of old road to expressway

更新时间：2026-06-25

- Measurement of dynamic compaction effect and analysis of technical parameters in reconstruction of old road to expressway
- Vol. 29, Issue 9, (2008)
- 作者机构：
  
  山东大学土建与水利学院,济南,250061
- 作者简介：
- 基金信息：
- DOI：
  CLC： U418.8
- Online First：03 August 2013，
  
  Published：2008
- 稿件说明：
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Lü Guo-ren, CUI Xin-zhuang. Measurement of dynamic compaction effect and analysis of technical parameters in reconstruction of old road to expressway[J]. 2008, 29(9).
DOI：

Lü Guo-ren, CUI Xin-zhuang. Measurement of dynamic compaction effect and analysis of technical parameters in reconstruction of old road to expressway[J]. 2008, 29(9). DOI：

摘要

旧路改建高速公路遇到的最主要的问题是地基的不均匀沉降。数值分析表明，对新的天然地基进行处理是解决这一问题的关键。强夯是加固地基的一种有效措施，为了对强夯工艺参数进行优化研究，对夯锤冲击地面过程中产生的动孔隙水压力、动土应力以及夯后超静孔隙水压力的消散过程进行了跟踪测试与分析。结果表明，对以风化料为主的地基，最大夯击数不宜超过4击，而且铺底夯完成2 d后就可进行满夯。

Abstract

Differential settlement of the subgrade is the main problem encoutered in the reconstruction of old road to expressway. Numerical analysis indicates that the treatment to new nature ground is the key to decreasing the differential settlement. Dynamic compaction is an effective method of improving ground. In order to optimize its construction parameters

dynamic pore water pressure and dynamic soil stress rising during the dynamic compaction; and the dissipation of excess pore water pressure are measured and analyzed. For weathered soil subgrade

test results show that the maximum tamping number shouldn’t exceed 4 and ironing tamping can be carried out just two days after the major tamping.

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Related Institution

CCCC First Highway Consultants Co., Ltd.

State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences

Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University

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Key Laboratory of Road and Railway Engineering Safety Control of Ministry of Education, Shijiazhuang Tiedao University

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