A new equilibrium solution for masonry spiral stairs

Angelillo, Maurizio; Olivieri, Carlo; DeJong, Matthew J.

doi:10.1016/j.engstruct.2021.112176

Cited by 19 publications

(11 citation statements)

References 7 publications

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“…The present paper starts by the use of the Linear Arch Static Analysis (LASA) in order to obtain an equilibrium solution in compression for masonry spiral staircases, and more generally, for non-planar curves under a given vertical load [30]. The case study of the small spiral staircase placed in the tower of Nisida, described in Section 3 is taken into consideration.…”

Section: Purpose Of the Studymentioning

confidence: 99%

Masonry Spiral Stairs: A Comparison between Analytical and Numerical Approaches

et al. 2022

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The present paper applies the Linear Arch Static Analysis (LASA), which models the masonry material as unilateral, i.e., No-Tension material in the sense of Heyman, and the Safe Theorem of the Limit Analysis to the study of masonry spiral stairs. A comparison is made with a refined FE analysis of the same problem, obtained by means of the ANSYS Parametric Design Language (APDL). The objective is to prove that LASA can be a valid alternative to other more complex numerical methods, such as FE, especially when the modeling parameters, such as the boundary conditions, cannot be exactly defined. The case study of a small spiral staircase placed in the tower of Nisida, a small island close to Naples, Italy is taken into consideration. The results show that the LASA analysis provides results that fall within two limit FE cases in terms of stress and overall thrust, providing at the same time a meaningful insight into the equilibrium state of the structure.

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Section: Purpose Of the Studymentioning

confidence: 99%

Masonry Spiral Stairs: A Comparison between Analytical and Numerical Approaches

et al. 2022

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“…A small number of researchers has taken up the problem of load-bearing capacity of masonry stairs. Research has mostly focused on establishing the principles and methods for structural calculations [92][93][94][95][96][97][98][99]. There is a visible lack of research on masonry staircases.…”

Section: Introductionmentioning

confidence: 99%

Research and TLS (LiDAR) Construction Diagnostics of Clay Brick Masonry Arched Stairs

et al. 2022

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The study presents the terrestrial laser scanning (TLS) diagnostic of the clay brick masonry arched staircase in a historic building. Based on the measurements of the existing arched stair flights, 1:1 scale experimental models with and without stair treads were made. Strength tests of the models were carried out for different concentrated force locations in relation to the supporting structure. Force, deflections and reaction in the upper support of the run were measured during the tests. The influence of the masonry steps on the curved vault on the load capacity and stiffness of the run structure was analyzed. The conducted experimental investigations showed that the key element responsible for the actual load-bearing capacity and stiffness of this type of stair flights were the treads above the masonry arch.

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“…The former category includes the mathematical formulations for the simulation of block structures [9,10]. Recently, new equilibrium solutions have been provided, such as thrust network analysis [11], the no-compression membrane [12] and the extension of linear arch static analysis to masonry spiral stairs [13].…”

Section: Introduction 1restoration Of Archaeological Remainsmentioning

confidence: 99%

Numerical Prediction of the Seismic Behavior of Reassembled Columns in Ancient Structures: An Anastylosis Model for the Temple of Apollo Pythios in Gortyn (Crete)

et al. 2021

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The Temple of Apollo Pythios in Gortyn (Crete, Greece) dates back to the mid-7th century BC. The temple underwent several transformations and an ultimate destruction over time that resulted in the current remains of a Roman colonnade composed of six fragmented stone columns lying on the ground within the naos. In addition, the region was struck by several earthquakes which contributed to the various changes. The analysis of the fragments composing the column portions and their geometric features provided a possible outline for their standing repositioning. Based on the current seismic hazard of the region, a predictive numerical model of the colonnade in the anastylosis conditions suggested the need for proper connections between the fragments and the bases to ensure their overall conservation as a compound structure. The comparison of various configurations of intervention and the simple superimposition of the fragments also provided details on the accomplishment of minimal and compatible solutions.

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A new equilibrium solution for masonry spiral stairs

Cited by 19 publications

References 7 publications

Masonry Spiral Stairs: A Comparison between Analytical and Numerical Approaches

Masonry Spiral Stairs: A Comparison between Analytical and Numerical Approaches

Research and TLS (LiDAR) Construction Diagnostics of Clay Brick Masonry Arched Stairs

Numerical Prediction of the Seismic Behavior of Reassembled Columns in Ancient Structures: An Anastylosis Model for the Temple of Apollo Pythios in Gortyn (Crete)

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