Scipediacontent: Scipediacontent moved page Draft Content 681558693 to J. Scacco 2021a

2021-11-30T11:50:09Z

Scipediacontent moved page Draft Content 681558693 to J. Scacco 2021a

Scipediacontent: Created page with "== Abstract == In the context of historical heritage, curved masonry structures as arches, vaults and domes represent the most distinctive and charming feature. Si..."

2021-11-30T11:50:05Z

Created page with "== Abstract == In the context of historical heritage, curved masonry structures as arches, vaults and domes represent the most distinctive and charming feature. Si..."

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== Abstract ==

In the context of historical heritage, curved masonry structures as arches,
vaults and domes represent the most distinctive and charming feature. Since the 17th century,
several approaches have been developed in order to analyze their behavior, achieving
nowadays techniques enable to combine ancient and modern methods. However, as these
elements act as weak points of the structures during seismic events, the necessity of
evaluating their vulnerability and safety level pushed the research to implement new
numerical approaches. Although, the behavior of such structures is still not deeply
investigated in literature as the high number of variables and uncertainty involved.
An innovative discrete homogenized model approach is here proposed. The method
provides the main features needed for proper simulation of masonry curved structures,
including the orthotropy and the typical in-and-out-of-plane coupled behavior exhibited by
masonry vaults. Moreover, homogenization procedures directly implemented in the method
allows reducing by far the number of variables, leading to non-linear analyses
without unpractical computational time.
The model is conceived as an assembly of elastic units joint by non-linear interfaces. These
latter are modeled as bricks elements and Concrete Damage Plasticity is used for
modeling non-linear mechanical properties, coming from homogenization procedures.
The discrete mesh is obtained automatically by means of an ad-hoc script.
With the aim to validate the proposed approach, some non-linear simulations are
carried out on examples of an unreinforced dome, of which experimental and numerical
data are available, showing the reliability of the method and the accuracy of reproducing the
evolution of the damage with a limited computational burden.

== Full document ==
<pdf>Media:Draft_Content_681558693p683.pdf</pdf>
== References ==

[1] Huerta, S. Mechanics of masonry vaults: the equilibrium approach. In: Proc. 1st Int. Congr. Struct. Anal. Hist. Constr. Guimaraes, (2001), pp. 47–70.

[2] Heyman, J. The stone skeleton. Cambridge University Press (UK), (1995).

[3] Fanning, P.J., Boothby, T.E. Three dimensional modelling and full scale testing of stone arch bridges. Comput. Struct.(2001) 79: 2645-2662.

[4] Como, M. Statics of historic masonry costructions. Springer-Verlag Berlin (Germany), (2013).

[5] Bove, M., Castellano, A., Fraddosio, A., Scacco,J., Milani,G. and Piccioni, M. D. Experimental and Numerical Analysis of FRCM Strengthened Parabolic Tuff Barrel Vault. In Key Engineering Materials, 817 (2019), pp. 213–220.

[6] Lourenço, P. B., De Borst, R. and Rots, J. G. A plane stress softening plasticity model for orthotropic materials. Int. J. Numer. Methods Eng. (1997) 40: 4033–4057.

[7] Bianchini, N., Mendes,N. and Lourenco, P.B. Seismic Assessment Of Masonry Cross Vaults Through Numerical Seismic Assessment Of Masonry Cross Vaults Through Numerical Nonlinear Static And Dynamic Analysis. In: COMPDYN 2019 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, (2019).

[8] Grillanda, N., Chiozzi, A., Milani, G. and Tralli, A. Collapse behavior of masonry domes under seismic loads : An adaptive NURBS kinematic limit analysis approach. Eng. Struct. (2019) 200.

[9] Chiozzi, A., Grillanda, N., Milani, G. and Tralli, A. UB-ALMANAC: An adaptive limit analysis NURBS-based program for the automatic assessment of partial failure mechanisms in masonry churches. Eng. Fail. Anal. (2018) 85: 201–220.

[10] Grillanda, N., Chiozzi, A., Milani, G. and Tralli, A. On Collapse Behavior of Reinforced Masonry Domes under Seismic Loads. In Key Engineering Materials, 817 (2019), pp. 275–282.

[11] Bertolesi, E., Milani, G. and Lourenço, P. B. Implementation and validation of a total displacement non-linear homogenization approach for in-plane loaded masonry. Comput. Struct. (2016) 176: 13–33.

[12] Scacco, J., Ghiassi, B., Milani, G. and Lourenço, P.B. A fast modeling approach for numerical analysis of unreinforced and FRCM reinforced masonry walls under out-of- plane loading. Compos. Part B (2019) 180.

[13] Valente, M. and Milani, G. Effects of Geometrical Features on the Seismic Response of Historical Masonry Towers. J. Earthq. Eng. (2018) 22: 2-34.

[14] Milani, G. and Tralli, A. A simple meso-macro model based on SQP for the non-linear analysis of masonry double curvature structures. Int. J. Solids Struct. (2012) 49: vol. 808–834.

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Scipediacontent: Scipediacontent moved page Draft Content 681558693 to J. Scacco 2021a

Scipediacontent: Created page with "== Abstract == In the context of historical heritage, curved masonry structures as arches, vaults and domes represent the most distinctive and charming feature. Si..."