Large-strain numerical simulation and experimental result reseach about improving red-sandstone embankment by dynamic compaction

被引：0

作者：

Wang Gui-yao ^{[1
]}

Hu Zhen-nan ^{[2
]}

Kuang Xi-long ^{[1
,3
]}

机构：

[1] Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, Changsha 410076, Hunan, Peoples R China

[2] Adm Bur Hunan Expressway, Changsha 410001, Hunan, Peoples R China

[3] Hunan Vocat Polytech Coll Commun, Highway & Bridge Dept, Changsha 410004, Hunan, Peoples R China

来源：

ROCK AND SOIL MECHANICS | 2008年 / 29卷 / 09期

关键词：

dynamic compaction; red-sandstone embankment; numerical simulation; In-situ experiment; effect analysis;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Since the uncompressible for red-sandstone embankment, the dynamiic compaction method is used and the 3D FEM model about improving red-sandstone embankment by dynamic compaction is established. The numerical simulation of whole dynamic compaction process is carried out; and the coutours of displacement & stress are obtained with explicit dynamic finite element program ANSYS/LS-DYDA. The results show that the orderliness of stress & strain is quite consistant with the experimental results. The mechanism of improving red-sandstone embankment via dynamic compaction as well as how to determine compaction parameters is also analyzed. Meanwhile, the results show that the effective influence depth is about 4 similar to 6 m, and the hammer's contact distance is about 3.5 m, for hammers with tamping-energy is 1 200 kN.m and diameter is 2 m.

引用

页码：2451 / 2456

页数：6