基于数值模拟的土中爆破振动速度预测方法研究  

Prediction Method of Vibration Velocity of Blasting in Soil Based on Numerical Simulation

作　　者：魏连雨[1] 董立颖 李慧[1] 冯雷 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]天津城建设计院,天津300122

出　　处：《重庆交通大学学报（自然科学版）》2017年第4期51-57,共7页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：河北省交通运输厅科技计划项目(20140629)

摘　　要：针对爆破振动控制不善极易导致施工地点周围建筑受损现象,以振动速度为主要研究内容,基于ANSYS/LSDYNA动力有限元数值模拟技术,建立了预测爆破挤密施工周围土体振动速度的模型。研究表明:该模型在输入土壤、炸药、空气的相关参数的前提下,能够较为准确的预测爆源附近周边土体的振动速度,有效地减少了传统预测方法的工程投入,并以承朝高速高填方路堤爆破挤密施工为例进行了工程应用验证。For the fact of improper blasting vibration control easily leading to damage of surrounding buildings,the model of the prediction of vibration velocity in surrounding soils in blasting compaction construction was established,which took the vibration velocity as the main research content and was based on ANSYS/LS-DYNA dynamic finite element numerical simulation technology.The proposed model can predict the vibration velocity in soils surrounding the blast source accurately by inputting the parameters of soil,explosives and air,which effectively reduces the engineering investment in traditional prediction method.The proposed method is verified by blasting of Cheng-Chao high embankment compaction engineering.

关 键 词：岩土工程 土中爆破 振动速度 数值模拟 爆心距 炸药量 

分 类 号：TP319.9[自动化与计算机技术—计算机软件与理论]