Pietro Meriggi

Università Degli Studi Roma Tre | UNIROMA3 · Department of Civil Engineering

This paper proposes the combined application of advanced survey techniques and limit analysis for the safety assessment of an ancient Roman arched structure: the “Arcazzi di Piscina” in the municipality of Anagni. The geometric survey, thanks to a detailed reconstruction of the actual state of the Arcazzi, allowed it to recognize possible kinematic...

The MLAZIO Project, developed at the Department of Engineering of Roma Tre University, intends to create a methodology for the construction of an efficient Bridge Management System (BMS) for Lazio Region. Inspired by the recently developed Italian guidelines, the project aims at classifying, managing, evaluating and monitoring the safety of bridges...

The assessment of the structural state of historical masonry buildings is a theme of urgent necessity for preserving the Italian and European Cultural Heritage. In this sense, this study, carried out in the framework of the 3rd International Summer School on Historic Masonry Structures (Anagni, 2021), intends to provide a schematic guideline for co...

This paper aims at investigating the matrix-to-textile stress transfer in a fabric reinforced cementitious matrix FRCM system, not bonded to any substrate, under shear loads. To this end, direct shear tests are performed on a basalt FRCM specimen introduced into an innovative properly designed four-hinge frame loaded by a universal testing machine....

Seismic events recently occurred in Europe highlighted the vulnerability of unreinforced masonry structures, representing the majority of the built heritage, to earthquake-induced loads. In particular, the in-plane capacity of shear walls under seismic loadings appeared sensibly modest, both in terms of strength and ultimate displacement, and their...

Textile Reinforced Mortar (TRM) composites are one of the most effective techniques to prevent failure and ensure seismic protection of unreinforced masonry in earthquake-prone areas. Aiming at assessing the suitability of this technology for irregular stone masonry walls, this study describes quasi-static cyclic shear-compression tests carried out...

Fabric reinforced cementitious matrix (FRCM) composites are widely used for retrofitting existing structures, especially in earthquake prone areas. After nearly two decades of scientific studies, experimental evidence proves their effectiveness for enhancing the ultimate strength and displacement capacity of masonry walls. There remains a need to d...

Fabric Reinforced Cementitious Matrix (FRCM) composites represent an effective, compatible and cost-efficient solution for strengthening and retrofitting existing structures. A strong research effort was done to investigate the tensile and bond properties of these materials, as well as the overall behaviour of strengthened members. A Round Robin Te...

Fabric reinforced cementitious matrix (FRCM) composites, made of high strength textiles externally bonded with inorganic matrices, experimentally proved effective to enhance the capacity of masonry walls. With the aim of fostering the transfer of knowledge from scientific research to engineering practice, this paper proposes an approach for the des...

Masonry walls are particularly vulnerable against out-of-plane seismic actions. Steel tie-bars and crowing beams in reinforced masonry can prevent their overturning, but collapse may take place also by bending, leaf separation or disaggregation. Textile Reinforced Mortar (TRM) composites, comprising high strength fabrics and inorganic matrices, can...

Recent earthquakes have dramatically shown the seismic vulnerability of existing masonry structures and highlighted the urgent need of developing suitable strengthening solutions. In order to gain an improved understanding of the seismic response of masonry constructions and of the most appropriate technologies for their retrofitting, a shake table...

The out-of-plane vulnerability of masonry walls plays a crucial role in the seismic response of existing structures. Depending upon mechanical properties and section morphology, collapse may occur by the onset of a mechanism or, as historic constructions often exhibit, leaf separation, disaggregation or sliding. In these latter cases, structural an...

The out-of-plane vulnerability of perimeter walls is one of the main issues in the seismic response of historic masonry structures. Their dynamic behaviour is highly non-linear and is influenced by the discontinuous nature of the material. A range of failure modes may occur, such as onset of a mechanism, leaf separation, disaggregation, or sliding....