Numerical Analysis of Soil Nail Walls under Seismic condition in 3D from Excavations

نویسندگانS.Zamiran -H.Ghojavand - H.R.Saba
نشریهApplied Mechanics and Materials
ارائه به نام دانشگاهArak Branch, Islamic Azad University-Amirkabir University of Technology
شماره صفحات6
شماره سریال208
شماره مجلد204
نوع مقالهFull Paper
تاریخ انتشارOct 2012 26
رتبه نشریهISI
نوع نشریهچاپی
کشور محل چاپسوئیس

چکیده مقاله

Typically, temporary soil nailing systems are not required to provide for design level earthquake occurrences consistent with the building or structure being constructed inside the excavation. However, the seismic response of the permanent soil nail walls during the earthquakes should be evaluated. On the other hand, evaluation of 3D response of soil nailing walls have some strange manners that should be considered in the numerical analysis. In this paper, numerical simulations of soil nail walls under vibrational input have been carried out, and the results are compared with the function of soil nail walls under ordinary statistical loading. The behaviour of geometry of nails are mentioned under static and seismic analysis. After that some investigations are carried out to find respond of soil nailing walls in some 3D excavation forms. The analysis is performed with finite difference software called FLAC3D. The results are prepared as lateral displacement of the walls and normalized maximum tensile forces for nails. These results can demonstrate the behavior of external and internal resistance of soil nail walls under seismic and static analysis. The deformation of wall under the static and dynamic manner varies in a wide range. On the other hand, tensile loads that are produced in nails under the static manner are namely 50% less than the dynamic manner.

tags: Soil Nail Walls, Dynamic Analysis, Numerical Modeling