- Tytuł:
- Shape optimization of road tunnel cross-section by simulated annealing
- Autorzy:
-
Sobótka, M.
Pachnicz, M. - Powiązania:
- https://bibliotekanauki.pl/articles/178948.pdf
- Data publikacji:
- 2016
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
simulated annealing
underground excavation
shape optimization
linear elasticity
energy of volumetric strain - Opis:
- The paper concerns shape optimization of a tunnel excavation cross-section. The study incorporates optimization procedure of the simulated annealing (SA). The form of a cost function derives from the energetic optimality condition, formulated in the authors’ previous papers. The utilized algorithm takes advantage of the optimization procedure already published by the authors. Unlike other approaches presented in literature, the one introduced in this paper takes into consideration a practical requirement of preserving fixed clearance gauge. Itasca Flac software is utilized in numerical examples. The optimal excavation shapes are determined for five different in situ stress ratios. This factor significantly affects the optimal topology of excavation. The resulting shapes are elongated in the direction of a principal stress greater value. Moreover, the obtained optimal shapes have smooth contours circumscribing the gauge.
- Źródło:
-
Studia Geotechnica et Mechanica; 2016, 38, 2; 47-52
0137-6365
2083-831X - Pojawia się w:
- Studia Geotechnica et Mechanica
- Dostawca treści:
- Biblioteka Nauki
Artykuł