爆炸与冲击2018，Vol.38Issue(1)：233-240,8.DOI:10.11883/bzycj-2016-0298
条形药包爆炸挤密黄土路堤横向影响规律
Lateral influence rules on explosion-compacted loess embankment by linear explosive bars
摘要
Abstract
In order to rationally design the plane layout scheme of drilling holes for explosion compacting the loess embankment of an existing highway,this paper took the loess embankment of a highway reinforced by explosion compaction(EC) as an example and studied the lateral influence rules on EC with linear explosive bar.Firstly,a finite element model was established according to the actual geometry and material parameters of the highway.Then,based on the numerical simulation of sixteen cases carried out by ANSYS/LS-DYNA,the change rules of the horizontal radius of the explosion cavity,the peak values of soil density and their position,the lateral influence radius of explosion compacting loess embankment were obtained.These sixteen cases belong to two kinds of situations.One kind is of explosive bars with equal cross section and unequal length,while another one is of those with equal length and unequal cross section.Moreover,the relationship functions among the increment of soil density after EC with the explosive bar whose cross section was composed of two explosive tubes,the horizontal distance to the core of the explosive bar and the amount of explosive were fitted.Finally,combined with the actual EC engineering of the highway,the application of the above rules in the design of construction scheme was illustrated.关键词
道路工程/爆炸挤密/条形药包/黄土路堤/横向影响Key words
road engineering/explosion compaction/linear explosive bar/loess embankment/lateral influence分类
数理科学引用本文复制引用
魏连雨,李海超,刘艳竹..条形药包爆炸挤密黄土路堤横向影响规律[J].爆炸与冲击,2018,38(1):233-240,8.基金项目
河北省交通运输厅科技计划项目(20140629) （20140629）
