Solution to transient response of a cylindrical lined tunnel in an infinite elastic medium under internal blast load

被引：0

作者：

Gao M. ^{[1
,2
]}

Zhang J.-Y. ^{[1
,2
]}

Gao G.-Y. ^{[3
]}

Chen Q.-S. ^{[4
]}

Chao M.-S. ^{[1
,2
]}

Li D.-Y. ^{[1
,2
]}

机构：

[1] Institute of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao

[2] Shandong University of Science and Technology, Shandong Province Key Laboratory of Civil Engineering & Disaster Prevention and Mitigation, Qingdao

[3] Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai

[4] Department of Civil and Environmental Engineering, National University of Singapore, Singapore

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2017年 / 39卷 / 08期

关键词：

Cylindrical lined tunnel; Fourier transform; Internal blast load; Laplace transform; Transient dynamic response;

D O I：

10.11779/CJGE201708002

中图分类号：

学科分类号：

摘要：

The vibration response resulting from internal explosion load is very important for the safety of the underground lined tunnels. The dimensionless dynamic transient solution to a cylindrical lined cavity under an internal blast load in an infinite elastic medium is derived by the Fourier transform and the Laplace transform. Utilizing the inverse Fourier transform and the inverse Laplace transform, the distribution and propagation attenuation laws of the vibration response generated by the internal explosion load in the lining and the surrounding elastic medium are calculated and analyzed. The results show that the radial displacement and the hoop stress on the internal lining surface and those of the soil on the interface between the lining and the soil reach the maximum at the explosion source center. The radial displacement and the hoop stress decrease rapidly with Z* at both sides of the center, and eventually decay to zero at Z*=6. The peak value of the time history of the radial displacement and the hoop stress at the internal and outer lining surfaces are the maximum at the explosion source center. The further away from the explosion source center, the smaller the peak value. When Z*=10, the radial displacement and the hoop stress decay to zero. © 2017, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：1366 / 1373

页数：7

共 18 条

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