Mesoscale partitioned analysis of brick-masonry arches

Zhang, Yanyang; Macorini, Lorenzo; Izzuddin, B.A.

doi:10.1016/j.engstruct.2016.05.046

Cited by 44 publications

(52 citation statements)

References 37 publications

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“…While this could be generally acceptable for the analysis of square arches subjected to line loads, it may lead to erroneous results when investigating the response of arches under patch loads or skew arches exhibiting an inherent 3D response [7]. The adopted numerical strategy for brick/block-masonry, which follows the mesoscale description previously developed at Imperial College [12], allows for an accurate representation of the actual masonry bond and the 3D geometry of any masonry arch including skew arches [13].…”

Section: Modelling Strategy For Masonry Bridgesmentioning

confidence: 99%

“…In this paper, a detailed 3D description is proposed for masonry bridges utilising a mesoscale strategy for brick/block-masonry [12]. In previous research [13,14], it was shown that this advanced modelling strategy enables an accurate response prediction of masonry arches, as it takes into account the actual masonry bond, including potential defects in the brickwork, without resorting to homogenization techniques as in [11]. This numerical approach is extended here to allow for the interaction between arch and backfill.…”

Section: Introductionmentioning

confidence: 99%

“…has been represented adopting an efficient strip model with only one set of solid elements along the width of the bridge specimen for the arch and the backfill meshes. This reduced representation provides accurate results in the case of square arch bridges subjected to line loads uniformly distributed along the bridge width[13] enabling an efficient representation of the contribution of rigid spandrel walls which are detached from the arch barrel but provide transverse confinement to the backfill.Figure 8shows the proposed simplified FE model of the bridge, where the actual masonry bond of the arch on the face of the bridge is accurately represented. More specifically, nonlinear interface elements are used for describing the circumferential mortar joints connecting the two rings and transverse mortar bed joints, which are assumed to be continuous along the radial directions.…”

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confidence: 99%

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Mesoscale partitioned modelling of masonry bridges allowing for arch-backfill interaction

Zhang

Tubaldi

Macorini

et al. 2018

Construction and Building Materials

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Masonry arch bridges exhibit a complex three-dimensional behaviour which is determined by the interaction between different structural and non-structu33ral components, including the arch barrel, the backfill and the lateral walls. This paper presents an advanced finite-element modelling strategy for studying the behaviour of masonry arch bridges under vertical loading which combines a mesoscale description of the arch barrel with a plasticity-based continuum approach for the fill and the spandrel-walls. The proposed modelling strategy is validated against available experimental laboratory test results on masonry arch bridges. Firstly, a bridge specimen with a detached spandrel wall is analysed considering a simplified strip model. Subsequently, the influence on the bridge response of backfill and arch characteristics, loading position, arch shape and abutment movements are investigated through a comprehensive parametric study. In the final part of the paper, the results of full 3D mesoscale simulations of an arch bridge with attached spandrel walls are presented and discussed. The analysis results provide significant information on the complex interaction between the different bridge components along the longitudinal and transverse direction, and can be used to validate and calibrate simplified approaches for practical assessment of masonry arch bridge.

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Section: Modelling Strategy For Masonry Bridgesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Mesoscale partitioned modelling of masonry bridges allowing for arch-backfill interaction

Zhang

Tubaldi

Macorini

et al. 2018

Construction and Building Materials

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“…The arch in masonry arch bridges was analyzed as a two-phase material comprising bricks (or stones) and mortar [13,25]. An accurate mesoscale arch masonry model was also proposed [26][27][28][29][30]. The nonlinear response of brick-masonry arches was studied, including nonlinear interface elements for describing mortar joints and brick-mortar interfaces.…”

Section: Introductionmentioning

confidence: 99%

Study on the Restoration of a Masonry Arch Viaduct: Numerical Analysis and Lab Tests

et al. 2020

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This article presents an analysis of the load-carrying capacity of a historic masonry arch viaduct. The vault was made of bricks and lime-cement mortar. It was built in 1886 and, therefore, its historical character had to be included in the restoration project. The main task of the restoration was to bring the viaduct to a technical condition corresponding to the current requirements to allow normal (or limited) service. The strength of the brickwork and joints (mortar) was examined experimentally in the laboratory and on the viaduct. This paper presents numerical calculations for the masonry viaduct that were performed using two programs based on the finite element method. As the project documentation was unknown, two-and three-hinged models of the masonry arch were analyzed. The axial forces, shear forces, bending moments, displacement, normal stresses, and shear stresses generated from the numerical analysis have been discussed. The conditions of the load capacity of the arch viaduct due to compression and shearing have been met. The safety of a masonry arch of the viaduct was determined. Finally, the restoration scope of the masonry viaduct was proposed.

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“…This approach has been developed specifically for computation of large-scale unreinforced masonry structures, and it has been already employed and validated for evaluation of arches and single-span masonry arch bridges subjected to vertical loadings and settlements [14], [15].…”

Section: Mescoscale Partitioned Modelling Of Masonry Arch Bridgesmentioning

confidence: 99%