路基工程Issue(6)：59-62,4.DOI:10.13379/j.issn.1003-8825.2017.06.12
隧道爆破对不同埋深的埋地管道动力响应研究
Study on Dynamic Response of Buried Pipeline with Different Buried Depths by Tunnel Blasting
舒懿东 1彭佳伟1
作者信息
- 1. 西南交通大学土木工程学院,成都610031
- 折叠
摘要
Abstract
Based on the blasting engineering in Xiannvyan tunnel of Xi'an-Chengdu high speed railway,it is built FEM model with software LS-DYNA to simulate the dynamic response of the buried pipeline which was influenced by a nearby blasting vibration,compared with the data measured in the ground.The study result shows that the back of buried pipe facing explosion center may have axial tensile stress;with the depth increased,the dynamic equivalent stress of the pipe was increased,the risk of pipe destruction was increased too,but the overlap equivalent stress is lesser than the permissible stress 437.3 MPa;the vibration velocity of the pipe was increased with the increase of buried depth,while the peak vibration velocity of the ground was decreased from 9.55 cm/s to 7.02 cm/s.关键词
爆破振动/埋地管道/安全性/当量应力/振动速度Key words
blast vibration/buried pipe/safety/equivalent stress/vibration velocity分类
交通工程引用本文复制引用
舒懿东,彭佳伟..隧道爆破对不同埋深的埋地管道动力响应研究[J].路基工程,2017,(6):59-62,4.
