[1]王有凯、,王辉,王光勇.洞径对地下洞室的动力应力集中系数和振动加速度影响研究[J].爆破器材,2010,39(06):1-4.
 WANG Youkai,WANG Hui,WANG Guangyong.Research on the Influence of Radius on Dynamic Stress Concentration Factor and Vibration Acceleration of Underground Openings[J].EXPLOSIVE MATERIALS,2010,39(06):1-4.
点击复制

洞径对地下洞室的动力应力集中系数和振动加速度影响研究()
分享到:

《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
39
期数:
2010年06
页码:
1-4
栏目:
基础理论
出版日期:
2010-12-20

文章信息/Info

Title:
Research on the Influence of Radius on Dynamic Stress Concentration Factor and Vibration Acceleration of Underground Openings
文章编号:
4297
作者:
王有凯1、2王辉2王光勇2
(1.中国科学技术大学近代力学系,安徽合肥230026;2. 河南理工大学土木工程学院,河南焦作454000)
Author(s):
WANG Youkai①② WANG Hui WANG Guangyong
①Department of Modern Mechanics, University of Science and Technology of China (Anhui Hefei, 230026) ②School of Civil Engineering, He’nan Polytechnic University (He’nan Jiaozuo, 454000)
关键词:
防护工程洞室洞径动应力集中系数振动加速度
Keywords:
protective projects radius of underground openings dynamic stress concentration factor vibration acceleration
分类号:
TU413.3
文献标志码:
A
摘要:
参考模型试验,利用波的函数展开法推导了平面P波作用下不规则洞室的应力和位移表达式,并以一深埋直墙圆拱形洞室为例得到:除了背爆侧局部范围之外,洞室的洞径越大,动应力集中系数越小;当入射角为270°时,在迎爆侧,洞室洞径越大,径向振动加速度和切向加速度越大,在背爆侧,洞室洞径越大,径向振动加速度和切向加速度越小。并且洞径对应力集中系数的影响程度比对振动加速度的影响程度大。
Abstract:
Based on model tests, the wave function expansion method was used to derive expressions of stress and displacement of the irregular underground opening under P-wave. Taking straight-wall and arched underground opening as an example, the results show that the influence of radius on vibration acceleration is larger than that of radius on dynamic stress concentration factor. Except for local range of back-blast side, with the increase of radius of underground openings, the dynamic stress concentration factor is decreasing. When the angle of incidence is 270°, with the increase of radius of underground openings, the radial acceleration and tangential acceleration of face-blast side are increasing, but the radial acceleration and tangential acceleration of face-blast side are decreasing.

参考文献/References:

[1][美]鲍亦兴,毛昭宙. 弹性波的衍射与动应力集中[M].刘殿魁,苏先樾译,北京:科学出版社,1993.[2]黎在良,刘殿魁.固体中的波[M].北京:科学出版社,1995.[3]杨桂通,张善元.弹性动力学[M] .北京:中国铁道出版社,1988.[4]王光勇,张素华,谢文强,等.锚杆动载响应和轴向应力分布规律数值分析[J].采矿与安全工程学报,2009,26(1):114-117.[5]ORTLEPP W D,STACEY T R. Performance of tunnel support under large deformation static and dynamic loading[J]. Tunnelling and Underground Space Technology,1998,13(1):15-21.[6]杨自友,顾金才,陈安敏,等. 爆炸波作用下锚杆间距对围岩加固效果影响的模型试验研究[J]. 岩石力学与工程学报,2008,27(4):757-764.[7]王光勇,顾金才,陈安敏,等.外部连接全长黏结式锚杆和弹力式锚杆抗爆加固效果模型试验研究[J].岩石力学与工程学报,2008,27(8):1695-1702. [8]朱传云,许桂生.爆炸应力波近似处理的分析与研究[J].岩土力学,2002,23(4):455-458.

相似文献/References:

[1]王启睿,张晓忠,孔福利,等.坑道中木格栅消波器的消波效应试验研究[J].爆破器材,2011,40(01):1.
 WANG Qirui,ZHANG Xiaozhong,KONG Fuli,et al.Test Research of Shockwave Attenuation Effect about Wooden Lattice Machine in Tunnel[J].EXPLOSIVE MATERIALS,2011,40(06):1.

备注/Memo

备注/Memo:
收稿日期:2010-06-13基金项目:河南省重点攻关项目(092102310313);河南理工大学博士基金(B2010-58)。作者简介:王有凯(1962~),男,在读博士,副教授,从事岩土力学教学与科研工作。
更新日期/Last Update: 2011-04-11