|Table of Contents|

Dynamic model test of highspeed hydraulic impactor

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年01期
Page:
95-98
Research Field:
Publishing date:
2009-01-20

Info

Title:
Dynamic model test of highspeed hydraulic impactor
Author(s):
LIU Benxue1; 2;  HAO Fei3;  ZHANG Zhifeng2;  FENG Zhongxu2
1. School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China; 2. Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education,Changan University, Xian 710064, Shaanxi, China; 3. School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu, China
Keywords:
road machinery;  soil;  impactor;  dynamic model
PACS:
U415.52
DOI:
-
Abstract:
In order to avoid the vehicle jump at the end of bridge, which is caused by the subgrade settlement at the joint of road and bridge, this paper designed a highspeed hydraulic impactor to compact the soil at the joint of road and bridge. Based on halfspace theory of soil mechanics, the interaction dynamic model of soil and the impactor is built to study the compaction effect with experiment. The results show that the compaction degree is increased with the increasing of compacting numbers, the total settlement is 405 mm and the compaction degree is 89% under the depth of 750 mm when the compacting numbers are 6 times. 6 figs, 8 refs.

References:

［1］谢弘帅，宰金璋，刘庆华，等.真空降水堆载联合预压加固高速公路桥坡软基技术研究［J］.中国公路学报，2003,16(2):2730.XIE Hongshuai,ZAI Jinzhang,LIU Qinghua,et al.Study of technology of soft subsoil under freeway bridge embankment by the combinedpreloading of vacuum dewatering and loading［J］.China Journal of Highway and Transport,2003,16(2):2730.
[2]邹劲,唐海云.桥头跳车理论浅析及质量控制［J］.山西科技,2005(4):9798.ZOU Jin,TANG Haiyun.Analysis of bridgeheadjumping theory and quality control［J］.Shanxi Science and Technology,2005(4):9798.
[3]Menard L,Broise Y.Theoretical and practical aspects of dynamic consolidation［J］.Geotechnique,1975,25(1):318.
[4]于克萍，程侠，折学森.强夯处理黄土路堤的模型试验［J］.长安大学学报:自然科学版，2003，23(4):2224.YU Keping,CHENG Xia,SHE Xuesen.Model test of loess embankment treated by dynamic compaction［J］.Journal of Changan University:Natural Science Eduition,2003,23(4):2224.
[5]Thilakasiri H S,Gunaratne M,Mullins G,et al.Investigation of impact stresses induced in laboratory dynamic compaction of soft soils［J］.International Journal for Numerical and Analytical Methods in Geomechanics,1996,20(10):753767.
[6]Mayne P Q，Jones J S.Impact stress during dynamic compaction［J］.Journal of Geotechnical Engineering，1983，109(10)：13421347.
[7]水伟厚,高广运,吴延炜,等.湿陷性黄土在强夯作用下的非完全弹性碰撞与冲击应力解析［J］.建筑结构学报,2003,24(5):9296.SHUI Weihou,GAO Guangyun,WU Yanwei,et al.Nonperfect elastic collision and impact stress analysis during dynamic compaction on collapsible loess［J］.Journal of Building Structures,2003,24(5):9296.
[8]王进，马军星.液压高速夯实机及其应用［J］.筑路机械与施工机械化，2006，23（1）：5153.WANG Jin,MA Junxing.Hydraulic highspeed compactor and application［J］.Road Machinery & Construction Mechanization,2006，23（1）：5153.

Memo

Memo:
-
Last Update: 2009-01-20