Analysis of masonry arches and vaults

Boothby, Thomas E.

doi:10.1002/pse.84

Cited by 68 publications

(28 citation statements)

References 29 publications

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“…For example, it has been reported that mortar deformations have a greater effect on the behaviour of masonry structures than the strength/stiffness of the units [1], and that the difference in the elastic properties of unit and mortar is the precursor of failure in compression ( [2] referring to Hilsdorf 1969 andMcNary andAbrams 1985). In contrast, according to other authors [3], the crushing strength of the weakest brick, rather than the interaction between brick and mortar, often determines masonry strength; and this can mask the influence of the mortar's strength on the strength of the masonry.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Mechanical Properties of Lime Mortar on the Strength of Brick Masonry

Costigan

Pavía

2012

RILEM Bookseries

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Abstract. This paper aims at improving the quality of lime mortar masonry by understanding the mechanics of mortars and masonry and their interaction. It investigates how the mortar's compressive and flexural strengths impact the compressive and bond strength of clay brick masonry bound with calcium lime (CL) and natural hydraulic lime (NHL) mortars. It concludes that the strength of the bond has a greater impact on the compressive strength of masonry than the mortar's strength. The masonry compressive strength increased proportionally to the strength of the bond up to 6 months. A regression analysis, giving a second order equation with coefficient of determination (R 2 ) of 0.918, demonstrates a strong and predictable relationship between bond strength and masonry compressive strength. It was noted that CL90s mortar masonry reaching a high bond value was stronger than that built with a stronger mortar but displaying a poorer bond. Finally, the mechanics of lime mortars and their masonry are similar. The predominantly elastic behaviour of the mortars of higher hydraulic strength compares well with the elastic and brittle behaviour of their masonry, with either little (NHL2) or non-existent plasticity (NHL3.5 and 5); in contrast, the CL90 mortar and masonry exhibit a plastic behaviour.

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Section: Introductionmentioning

confidence: 99%

Influence of the Mechanical Properties of Lime Mortar on the Strength of Brick Masonry

Costigan

Pavía

2012

RILEM Bookseries

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“…Conversely, the arch dynamic behaviour is generally treated by means of either simplified mechanism methods or complex computational analysis (Boothby 2001;Block et al 2006;De Lorenzis et al 2007). …”

Section: Background and State Of The Artmentioning

confidence: 99%

Shaking table tests on a full-scale unreinforced and IMG-retrofitted clay brick masonry barrel vault

Giamundo

Lignola

Maddaloni

et al. 2016

Bull Earthquake Eng

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The recent earthquakes in Italy demonstrated the extreme vulnerability of historical and cultural structures. Masonry vaults, which represent artistically valuable elements of these constructions, have been recognised among the most vulnerable elements. Traditional vault retrofit methods, such as buttresses or ties, are still widely adopted. These retrofit methods prevent differential displacements between vault supports (e.g., abutments, masonry piers and loadbearing walls). However, the pier differential displacement is not the only vulnerability source for vaults, and in many cases, further retrofit interventions are needed. Innovative retrofit methods based on inorganic matrixes, such as IMG, are aimed to prevent hinge mechanism failures. Such methods are suitable to be applied on vaults already retrofitted using traditional methods. \ud The knowledge of the seismic behaviour of a vault, once the differential displacement between the supports is prevented, can be crucial to the assessment of potential further vulnerabilities of vaults already retrofitted with traditional methods. \ud However, a deep knowledge of vault seismic behaviour is still lacking from an experimental point of view. Indeed, to date, few dynamic experimental studies have been conducted. Therefore, to investigate the seismic behaviour of masonry barrel vaults, several shaking table tests were performed on a full-scale specimen before and after the retrofit interventions. The tests investigated the main seismic properties of the tested structure and clarified the cracking mechanisms and capacity improvement due to the retrofit interventions. A comprehensive overview of the main results of the experimental tests has been presented

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“…Detailed summaries and analyses can be consulted elsewhere [1][2][3][4][5]. Masonry arches were most probably the first structures invented by mankind to span significant distances across rivers or valleys.…”

Section: Masonry Arches and Vaultsmentioning

confidence: 99%

Concrete shells – towards efficient structures: construction of an ellipsoidal concrete shell in Switzerland

Muttoni¹,

Lurati²,

Ruiz³

2013

Structural Concrete

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Concrete shells have been widely used in the past as economical and suitable solutions for a number of structures such as roofs, silos, cooling towers and offshore platforms. Taking advantage of their single or double curvature, bending moments and shear forces are limited, and the structures develop mostly membrane (in‐plane) forces, allowing them to span large distances with limited thicknesses (typically just a few centimetres). In recent decades, advances in numerical modelling, formwork erection and concrete technology have opened up a new set of possibilities for the use of concrete shells. This paper describes the design and construction of a shell in the form of an ellipsoid (93 × 52 × 22 m) and with thickness varying between 100 and 120 mm. The shell was built using sprayed concrete and also ordinary concrete in some regions. A number of tailored solutions were also adopted, such as post‐tensioning, addition of fibres and shear studs, to ensure satisfactory performance at both the serviceability and ultimate limit states.

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Analysis of masonry arches and vaults

Cited by 68 publications

References 29 publications

Influence of the Mechanical Properties of Lime Mortar on the Strength of Brick Masonry

Influence of the Mechanical Properties of Lime Mortar on the Strength of Brick Masonry

Shaking table tests on a full-scale unreinforced and IMG-retrofitted clay brick masonry barrel vault

Concrete shells – towards efficient structures: construction of an ellipsoidal concrete shell in Switzerland

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