پیوندهای مفید
آمار
| تعداد نشریات | 7 |
| تعداد شماره‌ها | 399 |
| تعداد مقالات | 5,389 |
| تعداد مشاهده مقاله | 5,288,194 |
| تعداد دریافت فایل اصل مقاله | 4,882,935 |
Evaluation of Protective Cavities Position on Decreasing Destructive Effects of Surface Blast on Buried Tunnels | ||
| AUT Journal of Civil Engineering | ||
| مقاله 11، دوره 4، شماره 4، اسفند 2020، صفحه 543-556 اصل مقاله (1.24 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajce.2020.17101.5614 | ||
| نویسندگان | ||
| Haddi Hosseini Nassab* 1؛ Seyyed Mojtaba Movahedifar2 | ||
| 1Young Researchers and Elites Club , birjand branch ,Islamic azad university ,birjand , iran | ||
| 2Department of civil, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran. | ||
| چکیده | ||
| In recent years, in the wake of growing military and terrorist threats especially against strategic and social buried structures, immunization of these structures against explosions becomes a major necessity. Therefore, it is crucial to study and use efficient methods to provide practical solutions to protect the key structures against advanced weapons and bombs. In this paper, the phenomenon of surface explosion and its impact on the tunnels, which are the most important buried structures, has been studied in full detail in a 3D environment. Additionally, evaluated the effect of depth, number, and location of the tunnel protective cavities in reducing destructive effects of the explosions on the tunnels in a 2D environment using nonlinear dynamic analysis in ANSYS-AUTODYN software. The results indicate that increasing the depth and number of the tunnel protective cavities are effective in reducing the destructive effects of the explosion on buried tunnels. As a key finding, the best location of the tunnel cavities was estimated in the range between the edges of the tunnel section and the edges of explosion charge. | ||
| کلیدواژه‌ها | ||
| Buried tunnel؛ Surface explosion؛ Immunization؛ AUTODYN | ||
| مراجع | ||
|
[1] Y. Lu, Z. Wang, K. Chong, A comparative study of buried structure in soil subjected to blast load using 2D and 3D numerical simulations, Soil Dynamics and Earthquake Engineering, 25(4) (2005) 275-288. [2] Z. Wang, Y. Lu, H. Hao, K. Chong, A full coupled numerical analysis approach for buried structures subjected to subsurface blast, Computers & Structures, 83(4) (2005) 339-356. [3] B. Luccioni, D. Ambrosini, S.C.K. Yuen, G. Nurick, Effects of Large and Spread Explosives Loads, International Journal of Protective Structures, 1(3) (2010) 319-344. [4] N. Nagy, M. Mohamed, J.C. Boot, Mtc, Egypt, Nonlinear numerical modeling for the effects of surface explosions on buried reinforced concrete structures, Geomechanics and Engineering, 2 (2010) 1-18. [5] H.L. Chen, Z.C. Xia, J.N. Zhou, H.L. Fan, F.N. Jin, Dynamic responses of underground arch structures subjected to conventional blast loads: Curvature effects, Archives of Civil and Mechanical Engineering, 13(3) (2013) 322-333. [6] X.F. Deng, J.B. Zhu, S.G. Chen, Z.Y. Zhao, Y.X. Zhou, J. Zhao, Numerical study on tunnel damage subject to blast-induced shock wave in jointed rock masses, Tunnelling and Underground Space Technology, 43 (2014) 88-100. [7] B. Mobaraki, M. Vaghefi, Numerical study of the depth and cross-sectional shape of tunnel under surface explosion, Tunnelling and Underground Space Technology, 47 (2015) 114-122. [8] L. Laine, A. Sandvik, Derivation of mechanical properties for sand, in: Proceedings of the 4th Asia-Pacific Conference on Shock and impact loads on structures, CI-Premier PTE LTD, Singapore, ANSYS Inc., 2001, pp. 368. [9] B. Pandurangan, Development, parameterization and validation of dynamic material models for soil and transparent armor glass, Clemson University, 2009. [10] U.S.D.o.t.A. TM5-855-1., Fundamentals of protective design for conventional weapons, Headquarters, Dept. of the Army, [Washington, DC], 1986. [11] P. Vannucci, F. Masi, I. Stefanou, A study on the simulation of blast actions on a monument structure, (2017). [12] E. Lee, M. Finger, W. Collins, JWL equation of state coefficients for high explosives, UCID-16189 United States 10.2172/4479737 Dep. NTIS LLNL English, Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States), 1973. [13] M.A. Yusof, R.N. Rosdi, N.M. Nor, A. Ismail, M.A. Yahya, N.C. Peng, Simulation of reinforced concrete blast wall subjected to air blast loading, Journal of Asian scientific research, 4(9) (2014) 522-533. [14] B. Zakrisson, Numerical and experimental studies of blast loading, Luleå tekniska universitet, 2010. [15] P. Zhang, Y. Cheng, J. Liu, Numerical analysis of dynamic response of corrugated core sandwich panels subjected to near-field air blast loading, Shock and Vibration, 2014 (2014). [16] G.F.C. Rogers, Y.R. Mayhew, Thermodynamic and transport properties of fluids: SI units, Blackwell, Oxford, 2003. [17] Y.D. Murray, Users manual for LS-DYNA concrete material model 159, 2007. [18] Y. Lu, Z. Wang, Characterization of structural effects from above-ground explosion using coupled numerical simulation, Computers & Structures, 84(28) (2006) 1729-1742. [19] R.M. Brannon, S. Leelavanichkul, Survey of four damage models for concrete, Sandia National Laboratories, 32(1) (2009) 1-80. [20] Ansys Inc, Autodyn theory manual revision 4.3, in, 2005. [21] J. Leppänen, Concrete structures subjected to fragment impacts, Chalmers University of Technology, 2004. [22] A.J. Castellano, J.P. Caltagirone, F.E. Sock, N. Dobbs, A.A. RESEARCH, D.C.S.L. MO., Structures to Resist the Effects of Accidental Explosions (TM 5-1300, NAVFAC P-397, AFM 88-22). Revision of Tri-Service Regulatory Design Manual, Defense Technical Information Center, 1982. | ||
|
آمار تعداد مشاهده مقاله: 345 تعداد دریافت فایل اصل مقاله: 393 |
||