[1]王光勇、,李桂林,张素华.在动载作用下衬砌洞室抗爆加固效果数值分析[J].爆破器材,2009,38(06):5-8.
 WANG Guangyong,LI Guilin,ZHANG Suhua.Numerical Analysis of the Antiexplosion Anchored Effects of Lined Tunnel under Dynamic Loads[J].EXPLOSIVE MATERIALS,2009,38(06):5-8.
点击复制

在动载作用下衬砌洞室抗爆加固效果数值分析()
分享到:

《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
38
期数:
2009年06
页码:
5-8
栏目:
基础理论
出版日期:
2009-12-20

文章信息/Info

Title:
Numerical Analysis of the Antiexplosion Anchored Effects of Lined Tunnel under Dynamic Loads
文章编号:
4197
作者:
王光勇1、2李桂林1张素华1
(1.河南理工大学土木工程学院,河南焦作454000;2.中国科学技术大学近代力学系,安徽合肥230026)
Author(s):
WANG Guangyong12 LI Guilin1 ZHANG Suhua1
1.School of Civil Engineering, He’nan Polytechnic University (He’nan Jiaozuo, 454000) 2.Department of Modern Mechanics, University of Science and Technology of China (Anhui Hefei, 230026)
关键词:
爆炸荷载衬砌洞室加固效果数值分析拱顶位移
Keywords:
explosive loads lined tunnel anchored effects numerical analysis vault displacement
分类号:
TD353
文献标志码:
A
摘要:
利用数值分析软件LS-DYNA3D程序, 研究了在爆炸荷载作用下衬砌加固洞室的抗爆加固效果以及衬砌参数对抗爆加固效果的影响规律。通过分析毛洞和衬砌洞室拱顶同一位置的压力曲线,得出压应力波形及传播规律合理;经过衬砌加固的洞室拱顶峰值位移明显减少,抗爆加固效果显著;当弹性模量不大时,随着弹性模量的增大,抗爆加固效果有所提高,但当弹性模量增大到一定值时,再增加衬砌的弹性模量,其抗爆加固效果反而不佳;衬砌的厚度对洞室的抗爆加固效果有一定的影响,但当衬砌的厚度增加到一定值时,再增加其厚度并不能明显提高衬砌洞室的抗爆加固效果。
Abstract:
The antexplosion anchoring effects of the lined tunnel are studied by LS-DYNA3D software under the explosive loads. The results show that by analyzing vertical stress temporal curves of unreinforced tunnel and lined tunnel at the same places, vertical stress temporal curves and its propagation law is reasonable, and vault displacement of lined tunnel is reduced significantly. The antexplosion anchored effects are enhanced with the increasing of elastic modulus of lining, but when elastic modulus of lining reaches to a certain size, the ant-explosion anchored effects can not further be enhanced. When thickness of lining reaches to a certain size, the ant-explosion anchored effects can not be enhanced significantly as well.

参考文献/References:

[1]周布奎, 唐德高, 陈向欣, 等. 刚玉块石砼抗侵彻特性试验研究[J]. 实验力学, 2004, 19(1): 79~83.[2]吴亮,卢文波,章克凌,等. 侵彻爆炸荷载作用下坑道衬砌破坏机理及影响因素分析[J]. 岩石力学与工程学报,2005,24(增1):4900~4904.[3]王祥秋,杨林德,周治国.列车振动荷载作用下隧道衬砌结构动力响应特征分析[J]. 岩石力学与工程学报,2006,25(7):1337~1342.[4]易长平,卢文波,张建华,等.爆破振动作用下城门洞形衬砌的临界振速研究[J]. 岩土力学,2008,29(8):2201~2206.[5]陈明,卢文波.爆炸应力波对新浇混凝土衬砌的影响研究[J]. 岩土力学,2008,29(2):455~450.[6]王祥秋,杨林德,高文华,等. 基于小波分析的隧道衬砌结构动力响应规律研究[J]. 岩石力学与工程学报,2005,24(10):1746~1750.[7]周香莲,周光明,王建华.饱和土中圆形衬砌结构对弹性波的散射[J]. 岩石力学与工程学报,2005,24(9):1572~1576.[8]王光勇,顾金才,陈安敏,等.拱顶端部加密锚杆支护洞室抗爆加固效果模型试验研究[J].岩土工程学报,2009,31(3) :378~383.[9]王礼立. 应力波基础[M]. 北京: 国防工业出版社, 2005.

备注/Memo

备注/Memo:
收稿日期:2009-05-05作者简介:王光勇(1977~),男,博士,讲师。主要从事岩土工程动载试验研究方面的工作。
更新日期/Last Update: 2011-05-12