68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference

PERFORMANCE ANALYSIS OF A SOIL NAIL WALL OF A DEEP EXCAVATION

Session: General Geotechnique and Engineering Geology / Géotechnique générale et géologie de l'ingénieur

Emad Zolqadr, P.O.R. Consulting Engineers Company (Iran)
Shahab Yasrebi, Enscon Ltd (Canada)
Hadi Momeninoshari, P.O.R. Consulting Engineers Company (Iran)

This study surveys the performance of a temporary soil nail wall with maximum height of 30.6m in Amirkabir complex project, located in Tehran. The water table located 15m under natural ground surface. Some numerical models were developed using a Finite Element software, based on results of field and laboratory tests. Simulation construction process of the soil nailed wall was carried out considering the sequence of construction stages. The modeling results were analyzed and compared with the in-situ monitored data. The results demonstrate, the model’s horizontal deformations are generally greater than in-situ monitored values. Therefore the parameters of soil layers were back analyzed to narrow the differences between the results of models and monitored data. As it was an EPC project, the results of monitoring and back analysis are applied to optimize system design during construction.