THE EFFECT OF CONSTITUTIVE MODEL ON WALL DEFLECTION ANALYSIS IN DEEP EXCAVATION
Effect of ground deformation on adjacent building caused by excavation is one of the main concerns in the construction of underground facilities in urban areas. The performance o...
Gespeichert in:
| Veröffentlicht in: | مهندسی عمران شریف 2017-08, Vol.33.2 (2.1), p.69-76 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | per |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | Effect of ground deformation on adjacent building caused by excavation is one of the main concerns in the construction of underground facilities in urban areas. The performance of soil nail walls is significantly affected due to the complex mutual interaction between its main components including the native soil, the reinforcement (nails) and the facing. Additionally, various other factors, such as the construction sequence, the installation method of nails, the connection between the nails and the facing, are also likely to influence the behavior of the soil nail walls. In practice, to study the complex soil-structure interaction and assess the performance of soil nail walls, often numerical simulations are performed. It is well established that the accuracy of numerical simulations depends significantly on the constitutive soil model used. In the present study, excavation in soft and stiff clay using hardening soil model, softening soil model, and Mohr-Coulomb model and also in loose and dense sand using hardening soil model and Mohr-Coulomb model is simulated using the finite element software ``Plaxis''. According to the results, considerable dependency of deformation of ground and side wall of excavation on the selected constitutive model is obvious. Based on obtained results, Mohr-Coulomb model predicts swilling at ground surface for points around the side wall. Hardening soil model and Mohr-Coulomb model predict maximum and minimum lateral deformations of side |
|---|---|
| ISSN: | 2676-4768 2676-4776 |
| DOI: | 10.24200/j30.2017.4540 |