Investigation of Reinforced Soil Nail Wall Behavior against Surface Blast

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Soorani S.R.; KHOSRAVI F.; SHARIFI S.

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Journal: Advanced Defense Science and Technology Year:2020 | Volume:10 | Issue:4 Page(s): 433-441

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Title

Investigation of Reinforced Soil Nail Wall Behavior against Surface Blast

Author(s)

Soorani S.R. | KHOSRAVI F. | SHARIFI S. | Issue Writer Certificate

Keywords

ExcavationQ1

BlastingQ2

Numerical ModelingQ2

Soil Nailing WallQ1

Abstract

Excavation of underground spaces provides locality for military and defence application. The stability of the Excavation wall is one of the important issues in the field of geotechnics. The use of steel anchor elements is one of the sustainable methods for stability of Excavation walls. These anchors pin the surface of the wall to the back soil, providing the wall's stability. In this research, the behavior of soil nailing, anchored walls and their combination against the blast load has been modeled by Abaqus finite element software. Also reinforcing elements are placed in different walls so that the safety factor becomes 1. 5. Different numerical models are chosen to determine the best plan for dealing with the dynamic load caused by the explosion. The explosive charge in software is equivalent to the 120 kg TNT explosion, and this load is applied at a distance of three times of the depth to Excavation. Also the modeling of full anchored wall has been verified in static mode. Based on the results, the deformation of the top of the wall after the explosion increased by 5 to 65 times of those before the explosion in various models and the primitive deformation caused by static load increased after Excavation. In a wall that was completely reinforced by nails, static analysis showed the highest amount of deformation, but after the explosion, the wall reinforced by the combination of anchors and nails showed the most deformation. The safety factor of the nailing wall before the explosion was 1. 5 and then reached to 1. 01. The explosion also caused a 110% increase in tensile stress of the Anchors.

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APA: Copy

Soorani, S.R., KHOSRAVI, F., & SHARIFI, S.. (2020). Investigation of Reinforced Soil Nail Wall Behavior against Surface Blast. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, 10(4 ), 433-441. SID. https://sid.ir/paper/167545/en

Vancouver: Copy

Soorani S.R., KHOSRAVI F., SHARIFI S.. Investigation of Reinforced Soil Nail Wall Behavior against Surface Blast. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY[Internet]. 2020;10(4 ):433-441. Available from: https://sid.ir/paper/167545/en

IEEE: Copy

S.R. Soorani, F. KHOSRAVI, and S. SHARIFI, “Investigation of Reinforced Soil Nail Wall Behavior against Surface Blast,” (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, vol. 10, no. 4 , pp. 433–441, 2020, [Online]. Available: https://sid.ir/paper/167545/en

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