Upper bound sequential linear programming mesh adaptation scheme for collapse analysis of masonry vaults

Milani, Gabriele

doi:10.1016/j.advengsoft.2014.09.004

Cited by 58 publications

(19 citation statements)

References 50 publications

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“…[7], [8], [9]. In recent times, computer developments based on limit analysis methods have been developed, such as the Thrust Network Method which is grounded from lower bound theorems [10], [11], whereas FE limit analysis approaches with infinitely resistant elements and dissipation on interfaces used the concepts of the upper bound theorem [12], [13], [14]. In addition, FE commercial software combined with either elastic-plastic or damaging models, developed to study steel or concrete structures are often used in the technical literature to model masonry vaults [15], [16], [17].…”

Section: Several Advanced Computational Techniques Have Been Developementioning

confidence: 99%

The effects of in-plane shear displacements at the springings of Gothic cross vaults

Carfagnini

Baraccani

Silvestri

et al. 2018

Construction and Building Materials

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Extensive damages recorded during recent strong Italian earthquakes highlighted how vulnerable masonry vaults are and what deformations they receive from the rest of the building, which can be simulated as two phenomena: (i) a dynamic response of the vault itself, above the lateral walls and piers, and (ii) a pseudo-static response of the vault to imposed displacements at its springings, triggered by significant movement from the lateral walls and piers. This paper aims at improving knowledge in this field by simulating the first of these phenomena as static shear deformation at the springings. An experimental programme was set on a model of a typical quadripartite square Gothic cross vault (from the aisle of the Holyrood Abbey in Edinburgh). The test on a 1:4 scaled model had the shear displacement applied by moving two abutments in the longitudinal sense until failure, recording the crack pattern evolution and displacements of the ridges, identifying the diagonal cracks normal to the shear displacement that cause the damage and collapse in the vault. The crack pattern was validated with linear and non-linear numerical models, confirming particular observations like the uplift of the ridges and concentration of damage along the notional shear diagonal. Non-linear models are capable of capturing not only the crack pattern evolution, but also the vertical and horizontal displacements of the structure.

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Section: Several Advanced Computational Techniques Have Been Developementioning

confidence: 99%

The effects of in-plane shear displacements at the springings of Gothic cross vaults

Carfagnini

Baraccani

Silvestri

et al. 2018

Construction and Building Materials

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“…Thus, over the past few decades a growing interest has developed in studying their behaviour up to collapse and assessing their ultimate load capacity. Significant laboratory and in-situ tests were carried out [3][4][5][6][7][8][9] and different analytical and numerical descriptions were proposed [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Current modelling strategies for arches in masonry bridges are mainly based upon the use of limit analysis concepts [20][21][22], the finite element method (FEM) [13,24,25,26,27], the discrete element method [23] or discontinuous modelling techniques [19].…”

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confidence: 99%

Mesoscale partitioned analysis of brick-masonry arches

Zhang

Macorini

Izzuddin

2016

Engineering Structures

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“…The standard yield line pattern adopted is informed by experimental observations from our own tests, as well as those from Kelman and Spence [21] and Sinha [34]. It is acknowledged that a general procedure for identifying optimum yield patterns requires a more complex approach such as the Sequential Linear Programming algorithm adopted by Milani [48].…”

Section: Application Of Yield Line Analysis To Masonry Subject To Hydmentioning

confidence: 99%

Performance of single skin masonry walls subjected to hydraulic loading

et al. 2018

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Property owners are facing increasing threats from flooding and in response are likely to turn to products designed to waterproof or 'seal' the outside of the building in an effort to prevent the ingress of flood water. However, very limited research has been conducted on the effect of this sealing action and the consequent hydraulic load acting upon the structure of the building. The theoretical safe application of waterproofing products has been suggested to be between 0.6 and 1 m (published guidance suggests 0.9 m), although the experimental evidence supporting these suggestions is either absent or limited in nature. This paper presents the findings of an experimental programme that has examined the effect of out-of-plane hydrostatic loading on masonry walls typical of domestic or commercial buildings. The study, conducted at 1/6th scale using a geotechnical centrifuge considers wall panels constructed from a variety of masonry units (autoclaved aerated concrete block, brick and brick-block) bound together with two different types of mortar. The wall panels were subject to an axial load representative of 1 storey of loading and were simply supported on all 4 sides. The loadout-of-plane deflection response of the panels was captured by a 3D digital image correlation system, and the water level at failure was compared to that predicted from previous research and the established yield line analysis method with encouraging results. When partial material and load factors were taken into consideration the results illustrated that a safe sealing height of 0.9 m, as quoted in the literature, would generally be inappropriate, whilst the safe sealing height of 0.6 m was not suitable for every case investigated. This supports the need for a suitable approach for the calculation of water levels at failure rather than the use of fixed values given in published literature.

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Upper bound sequential linear programming mesh adaptation scheme for collapse analysis of masonry vaults

Cited by 58 publications

References 50 publications

The effects of in-plane shear displacements at the springings of Gothic cross vaults

The effects of in-plane shear displacements at the springings of Gothic cross vaults

Mesoscale partitioned analysis of brick-masonry arches

Performance of single skin masonry walls subjected to hydraulic loading

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