Ricerc@Sapienza

This paper presents a performance-based earthquake assessment of an industrial structure, aiming at identifying suitable techniques to select and scale natural ground motions for 3D analysis and improve the structural response prediction of complex structures. To this end, an industrial structure characterized by the presence of large masses placed at a significant height and of different horizontal resisting systems, such as moment resisting frames, inverted V bracings and diagonal bracings, is investigated.

Pantographic fabrics are emerging in the literature as promising metamaterials. They are made up of two orthogonal families of fibers connected at their intersection points by pivots. Fibers are supposed to be straight in the reference configuration and to store energy while undergoing extension and bending deformations only. Pivots, which oppose to relative rotations of fibers, are supposed to store energy when undergoing torsion, thus to confer shear stiffness at macro level.

Biogas production from manure has been proposed as a partial solution to energy and environmental concerns. However, manure markets face distortions caused by considerable unbalance between supply and demand and environmental regulations imposed for soil and water protection. Such market distortions influence the cooperation between animal farmers, biogas producers and arable land owners causing fluctuations in manure prices paid (or incurred) by animal farmers.

This paper deals with the role of Hydrogen enriched Natural Gas (H2NG) in Hybrid Energy Systems for energy refurbishment purposes. In detail, three different plant layout options were investigated. A photovoltaics (PV) array and two-stage electric heat pump (EHP), a hybrid photovoltaic thermal solar collectors combined to gas heat pump (GHP) fuelled with H2NG, and a CHP fuelled with H2NG connected to a two-stage EHP were compared.

This paper focuses on the interaction between tunnelling and historical masonry structures. These latter often characterise the centre of many cities and should be preserved from possible tunnelling-induced damage. In recent years the Authors of this contribution have adopted an advanced numerical approach to investigate this issue in the two-dimensional domain, schematising the block masonry structure as a homogenised anisotropic medium [1, 2]. This study extends the approach to three-dimensional conditions.

The presence of mortar attached to the surface of recycled aggregates strongly affect their quality, especially in order to reuse them for making new concrete. In this perspective, an innovative sensor-based quality control strategy was developed using hyperspectral imaging (HSI) in the near-infrared range (1000–1700 nm), to evaluate the residual mortar content on the surface of coarse recycled concrete aggregates.

The purpose of this paper is to illustrate a multidisciplinary model for safety and security management (IMMSSM) which can be implemented by means of a suitable Integrated Technological System Framework (ITSF) that can be based on Internet of Things (IoT)/Internet of Everything (IoE), showing also the significant role played by the integration of the elements that compose the model itself, thanks to a proper genetic algorithm studied for the specific context.

This two-part paper presents a comprehensive methodology for lighting calculation of a road pre-tunnel. The
adequate lighting of road tunnels, especially in their entrance zone during the day-time hours, is a very important
factor to maintain road safety and to ensure a good level of service. These targets are commonly achieved
by means of artificial lighting systems. In some cases, nevertheless, it could be preferable to build a pre-tunnel,
which reduce and control the natural lighting contribution, in the threshold zone of the tunnel. The structure, in

This two-part paper presents a comprehensive methodology for lighting calculation of a road pre-tunnel. The adequate lighting of road tunnels, especially in their entrance zone during the day-time hours, is a very important factor to maintain road safety and to ensure a good level of service. These targets are commonly achieved by means of artificial lighting systems. In some cases, nevertheless, it could be preferable to build a pre-tunnel, which reduces and controls the natural lighting contribution in the threshold zone of the tunnel.

Synopsis: This paper compares the life-cycle costs of pavement and lighting when different pavement types are built in road tunnels. Two pavements, rigid and flexible, during 20 and 30-year service life and for different traffic conditions were analyzed. Tunnel lengths between 750 m [2,460 ft] to 2,000 m [6,562 ft] were considered. The methodologies used to design and maintain both the pavements and the LED lighting systems complied with the Italian standards and practices.