Evaluating the geometric component in the optimal design of bending-active gridshell structures
الموضوعات : Architecture
Sahar Sadeghi
1
,
morteza Rahbar
2
,
Katayoun Taghizadeh Azari
3
,
Hossein zabihi
4
1 - Ph.D Candidate in Architecture , Department of Architecture, Hesabi professor Tafresh Branch, Islamic Azad University, Tafresh , Arak , Iran
2 - faculty of architecture, university of science and technology, tehran, iran.
3 - Associate Professor , Department of Architecture, Faculty of Architecture, University of Tehran, Tehran, Iran.
4 - Associate Professor, Department of Urban Development, Science & Research Branch, Islamic Azad University, Tehran, Iran.
الکلمات المفتاحية: gridshell, form finding, types of geometry, bending active, optimization, digital architecture,
ملخص المقالة :
Gridshell structures are a type of bending-active structures. In the present study, bending-active grid structures are selected since it is simple to construct curved elements to create exciting and diverse architectural forms with minimum manufacturing energy consumption and minimum wastage of materials, they are strong shells against all kinds of forces and are less addressed in Iran. In this regard, the present study tries to determine the optimal geometric form of grid shells by comparing different geometries. Also, it investigates the geometry of anticlastic, synclastic, and free forms to help improve the structural performance of the bending-active grid shell. The hardness of these shells fully depends on their shape, therefore efficient forming helps to control their hardness and structural behavior. The structural performance of the grid shell is analyzed using Kangaroo Physics and Karamba plugins in Grasshopper software. In constructing bending-active gridshell structures, the shell geometry is drawn based on the changes in numerical variables such as geometric dimensions, opening length, etc., using the digital form-finding method in Kangaroo Physics and Karamba plugins in Grasshopper software and Galapagos optimization, and the final optimal form is designed. Next, the form is investigated against various stresses and loads including bending, shear, etc. The final model, selected by comparing different geometrical modules, shall have the lowest stress and the least displacement so that it can be significantly effective in designing and constructing the optimal forms of temporary bending-active gridshell structures.
Adriaenssens, S., Block., Ph., Veenendaa. D., Williams. Ch. (2014). “Shell Structures for Architecture”, London.
Aftokharzadeh, S. (2006) “Nature's geometry against Euclidean geometry”, Architecture and Construction Magazine, 8 .
Bulenda, T. and J. Knippers. (2001). “Stability of grid shells.” Computers & Structures. 79(12): p. 1161-1174.
Bendsøe, M.P., A. Ben-Tal, and J. Zowe. (1994). “Optimization methods for truss geometry and topology design”. Structural optimization,7(3): p. 141-159.
Celina, P. (2007) “Past and Future of Grid Shel Structures”. Massachusetts: Massachusetts institute of technology.
Collins M , Cosgrove T. (2016). “A Review of the State of the Art of Timber Gridshell Design and Construction”, Department of Civil Engineering and Materials Science, University of Limerick, 261.
Du Peloux, L., Baverel, O., Caron, J.-F., & Tayeb, F. (2013). “From shape to shell: a design tool to materialize freeform shapes using gridshell structures”.
Fazel, A. (2012) “Form finding and structural optimization of grid shell structures based on evolutionary genetic algorithm”, Tehran: University of Tehran.
Fritzsche, J.C.(2013). “Gridshell efficiency optimization”. Graduation Thesis, Eindhoven: Technical University Eindhoven.
Gengnagel C, Lafuente E. (2011). “Structural Application of Bio composites in highly elastic Structures”. Conference Proceedings IABSE - IASS Symposium 2011, Taller Longer, Lighter, London ..
Gengnagel C, Lafuente E. (2014) “Active Bending in Hybrid Structures Conference Paper”. Conference Proceedings IABSE - IASS Symposium Departement of Structural Design and Technology [KET] Faculty of Architecture, University of the Arts Berlin, Taller Longer, Lighter, London.
Gengnagel, Ch., Alpermann, H., Lafuente Hernández. (2014). “Active Bending in Hybrid Structures”, Departement of Structural Design and Technology [KET], Faculty of Architecture, University of the Arts Berlin, Conference Paper
Gholamzadeh, E., Metini, M., Eslami, Y., Talischi, Gh. (2022) “Formal interpretation of synclastic shells in nature and architecture”, Journal of Fine Arts-Architecture and Urbanism, 26(2) pp. 51-64
Golabchi M & Taghizadeh K. (2011) "Skins and folded sheet structures". Tehran: First edition, Tehran University Press, 78-80.( in Persian)
Gulabchi, M., Amiri, M. (2016) “Elements of Instruments for Architects” Tehran: Tehran University Publications Institute.
Hoshiar, N. (2009) “A collection of preliminary and advanced design tips for astronaut structures”, Shahid Bahonar University, Kerman .
Kilian A , Ochsendorf J. (2005) “Particle -spring systems for structural form finding”. Journal of the International Association for Shell and Spatial Structures, VOL. 46 .n. 147.
Kim, J. & Park, K. (2018). “The Design Characteristics of Nature-inspired Buildings” Civil Engineering and Architecture, 6(2): 88-107.
Liddell I. (2015). “Frei Otto and the development of gridshells”. Case Studies in Structural Engineering, 4, 39-4
Lienhard J, Alpermann H, Gengnagel C and Knippers J. (2012) “Active Bending, a Review on structures where bending is used as a self-formation process” IASS-APCS Symposium 2012, From Spatial Structures to Space Structures, Seoul 2012 .
Lionhard J, Alpermann H, Gengnagel C, Knippers J. (2013) “Active bending, a review on structures where bending is used as a self-formation process”. International Journal of Space Structures, 28(3-4):187-96.
Mansoori M., Kalantar N., Creasy T., Rybkowski Z. (2019). “Adaptive Wooden Architecture, Designing a Wood Composite with Shape-Memory Behavior," In: Bianconi F., Filippucci M. (eds) Digital Wood Design, Lecture Notes in Civil Engineering, vol 24, Springer, Cham. https://doi.org/10.1007/978-3-030-03676-8_27.
Margulios, I. (2013) “Architect, engineer, structure”, Mahmoud Gulabchi, first edition, Tehran, Tehran University Press.
Matini, M. (2013). “Using nature patterns to design flexible structures in architecture”, Journal of Fine Arts - Architecture and Urban Planning, Volume 20, Number 1, University of Tehran, Tehran.
Moore F. (2007) "Understanding the behavior of structures", (M. Golabchi, translator) Tehran: Tehran University Press, 213
Moore F., (2009) “Understanding the Behavior of Structures”, translated by Golabchi Mahmoud, Tehran University Press, third edition, Tehran .
Moore, F. (2007) “Understanding the behavior of structures” (M. Gulabchi, translator) Tehran: Tehran University Press
Pillwein S, Leimer K, Birsak M & Musialski P. (2020) "On elastic geodesic grids and their planar to spatial deployment". preprint arXiv:2007.00201
Salvador, M. (2002). “Structure in architecture”, translated by Mahmoud Gulabchi, Tehran: Tehran University Press.
Taghizadeh, K. (2015). “Teachings of natural structures, questions for architects”, Fine Arts Journal, 28 (11), pp. 75-84.
Taghizadeh, K., Matini, M., and Kakui, E. (2018) “Flexible structures; A solution to reduce the functional problems of moving shells” Journal of Fine Arts-Architecture and Urbanization. 24 (2), pp. 39-48.
Tang, G. (2013) “Timber gridshells: beyond the drawing board”. Proceedings of the Institution of Civil Engineers-Construction Materials, 166(6), 390-402.
Tang, G. (2013). “Timber gridshells: beyond the drawing board”. Proceedings of the Institution of Civil Engineers-Construction Materials, 166(6), 390-402.
Tibert, A. and S. Pellegrino. (2011). “Review of form-finding methods for tensegrity structures”. International Journal of Space Structures, 26(3): p. 241-256.
Winslow, P., Pellegrino, S., & Sharma, S. (2010). “Multi-objective optimization of free-form grid structures”. Structural and Multidisciplinary Optimization, 40(1-6), 257.
Yang, X.-S. (1970), “Optimization Algorithms”. Vol. 356, pp. 13-31).
