سعيد قطبي راوندي

With the advancement of engineering sciences an‎d technologies, an‎d the expansion of urban development, the need for implementing civil infrastructure such as high-rise buildings an‎d vertical excavations has increased significantly. Consequently, the necessity of utilizing support an‎d stabilization systems for excavations is more critical than ever. Potential instabilities in these excavations represent major hazards, including settlement of adjacent lan‎ds, wall instability, collapse of neighboring structures, etc., all of which must be mitigated through appropriate stabilization methods. The need to stabilize building excavations using modern an‎d cost-effective methods that also demonstrate favorable structural behavior has brought attention to the nailing method. Over the past two decades, this method has increasingly been employed as a suitable reinforcement technique to stabilize excavations an‎d ensure the safety of adjacent structures. In this thesis, conducted using the PLAXIS 2D finite element software, the output results of 15 experiments performed on three different soil types in a geotechnical centrifuge testing setup are analyzed. The next section discusses the horizontal deformations of excavation walls at depths of 12 an‎d 18 meters an‎d the safety factors obtained from the software under various soil conditions an‎d nail arrangements. The analysis of results indicates that greater horizontal deformations occur in weaker an‎d looser soils. Furthermore, with an increase in soil cohesion, the location of maximum wall deformation tends to shift toward the lower third of the wall.

ميخ گذاري , تغييرشكل افقي ديواره گود , پلكسيس , ضريب اطمينان

Soil Nailing , Horizontal Wall Deformation , PLAXIS , Safety Factor

Saeed Ghotbi Ravandi

Dr. Aliakbar Heshmati Rafsanjani