Dynamic response sensitivity of urban tunnel structures under blasting seismic waves to parameters

Lu Liang; Long Yuan; Guo Tao; Xie Quan-min; Zhao Chang-xiao; Gao Fu-yin

doi:10.11883/1001-1455(2014)06-0701-08

Volume 34 Issue 6

Dec. 2014

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Article Navigation > Explosion And Shock Waves > 2014 > 34(6): 701-708

Lu Liang, Long Yuan, Guo Tao, Xie Quan-min, Zhao Chang-xiao, Gao Fu-yin. Dynamic response sensitivity of urban tunnel structures under blasting seismic waves to parameters[J]. Explosion And Shock Waves, 2014, 34(6): 701-708. doi: 10.11883/1001-1455(2014)06-0701-08

Citation:

Lu Liang, Long Yuan, Guo Tao, Xie Quan-min, Zhao Chang-xiao, Gao Fu-yin. Dynamic response sensitivity of urban tunnel structures under blasting seismic waves to parameters[J]. Explosion And Shock Waves, 2014, 34(6): 701-708. doi: 10.11883/1001-1455(2014)06-0701-08

Citation:

Lu Liang, Long Yuan, Guo Tao, Xie Quan-min, Zhao Chang-xiao, Gao Fu-yin. Dynamic response sensitivity of urban tunnel structures under blasting seismic waves to parameters[J]. Explosion And Shock Waves, 2014, 34(6): 701-708. doi: 10.11883/1001-1455(2014)06-0701-08

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Dynamic response sensitivity of urban tunnel structures under blasting seismic waves to parameters

doi: 10.11883/1001-1455(2014)06-0701-08

Lu Liang^{1, 2
,
,},
Long Yuan¹,
Guo Tao¹,
Xie Quan-min^{1, 3},
Zhao Chang-xiao^{1, 3},
Gao Fu-yin¹

1.
College of Field Engineering, University of Science and Technology of PLA, Nanjing 210007, Jiangsu, China
2.
72351 Unit, Laiwu 271109, Shandong, China
3.
Wuhan Ordnance N.C.O Academy, Wuhan 430075, Hubei, China

Funds: Supported bythe National Natural Science Foundationof China (51178460, 51204071)

More Information

Corresponding author: Lu Liang, jzd04-20087@163.com
Received Date: 2013-04-03
Rev Recd Date: 2013-06-08
Publish Date: 2014-11-25

Abstract

Abstract

Primary waves were chosen as the study object, then an analytical solution for the dynamic response of tunnels with composite lining in infinite media under blasting seismic waves was deduced based on the wave function expansion method.According to the solution, the sensitivity of dynamic stress concentration factors to parameters was analyzed with the tunnel group excavation at Nanjing Hongshan South Road.By curve fitting, the regression equations were obtained for the hoop dynamic stress concentration factors of the surrounding rock and inner lining varied with the kinetic and geometrical parameters, respectively.The analysis result show that the elastic moduli of the surrounding rock and secondary lining and the Poisson's ratio of the surrounding rock have more impact on the hoop dynamic stress at the observation points and the effect of the elastic modulus of the primary lining is negligible.The lining thickness change has greater influence on the hoop dynamic stress of the surrounding rock than on the inner lining.Increasing the lining thickness can balance the stress states of the tunnel structures in designs and constructions, but the effect by the thicker inner lining is not as well as that by the thicker secondary lining.
- mechanics of explosion,
- dynamic response,
- analytical solution,
- tunnel structures,
- blasting seismic waves

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References(12)

References

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