A5020175789- Masonry and Concrete Structural Analysis
- Structural Health Monitoring Techniques
- Rock Mechanics and Modeling
- 3D Surveying and Cultural Heritage
- Geophysical Methods and Applications
- Building materials and conservation
- Ultrasonics and Acoustic Wave Propagation
- Structural Response to Dynamic Loads
- Structural Behavior of Reinforced Concrete
- Fatigue and fracture mechanics
- Civil and Structural Engineering Research
- Seismic Performance and Analysis
- Conservation Techniques and Studies
- Concrete Corrosion and Durability
- Structural Load-Bearing Analysis
- Infrastructure Maintenance and Monitoring
- Non-Destructive Testing Techniques
- Earthquake Detection and Analysis
- Advanced Surface Polishing Techniques
- BIM and Construction Integration
- Seismic Waves and Analysis
- Advanced machining processes and optimization
- Tunneling and Rock Mechanics
- Innovations in Concrete and Construction Materials
- Structural Analysis of Composite Materials
Polytechnic University of Turin
2014-2024
Turin Polytechnic University
2013
Delft University of Technology
2004
Politecnico di Milano
1998
Abstract After a brief discussion on crack models, it is demonstrated that cracking often accompanied by snaps and jumps in the load–displacement response which complicate analysis. This paper provides solution simplifying non‐linear models into sequentially linear saw‐tooth either tension‐softening for unreinforced material or tension‐stiffening reinforced material. A analysis performed, most critical element traced, stiffness strength of are reduced according to curve, process repeated....
Abstract The paper investigates the issue of finite element model development for structural assessment existing structures on basis detailed (terrestrial laser scanning and image-based) point clouds to parametric models generated using HBIM (Heritage Building Information Modelling) technology. Different procedures software combinations are investigated in order provide useful hints trying solve some criticalities which still unsolved albeit subject has been under investigation since years...
The present paper investigates the combined effect of corrosion and fatigue at very-high number cycles on recently collapsed Polcevera Bridge. Since construction, in mid-sixties, viaduct has experienced a dramatic increase heavy lorries traffic. Although amplitude stress oscillation strands was limited, it is assessed that larger load reached eighty million, out almost half billion total vehicles crossed bridge. Due to aggressive environment, degradation bridge developed much faster than...
Abstract: A scaled model of a two‐span masonry arch bridge has been built to investigate the effect central pile settlement because riverbank erosion. The geometry and structural details, included bricks mortar joints, are realized in scale 1 : 2. equipped with different Non‐Destructive Testing (NDT) instruments, including accelerometers, displacement transducers LVTD, strain gages, optic fibres sensors Acoustic Emissions (AE) transducers. subjected incremental pile, which was sustained on...
A possible scenario is proposed to put into evidence how the combined effect of fatigue at very high number cycles and corrosion could have been responsible for failure one strands subsequent collapse so-called balanced system Polcevera Bridge designed by Morandi. The analysis accounts an actual estimation heavy-lorry traffic load spectrum, as well European Standards prescription damage accumulation assessment. In addition, effective construction phases viaduct are considered. structural...
We examine an application of Acoustic Emission (AE) technique for a probabilistic analysis in time and space earthquakes, order to preserve the valuable Italian Renaissance Architectural Complex named “The Sacred Mountain Varallo.” Among forty‐five chapels Complex, structure Chapel XVII is particular concern due its uncertain structural condition level stress caused by regional seismicity. Therefore, lifetime assessment, taking into account evolution damage phenomena, necessary reliability...
The present paper investigates the influence of specimen size EN-AW6082 wrought aluminium alloy subjected to very high cycle fatigue (VHCF) tests. hourglass specimens were tested under fully reversed loading condition, up 109 cycles, by means ultrasonic testing machine developed Italsigma® (Italy). Three groups considered, with a diameter in middle cross-section ranging from 3 mm 12 mm. stress field was determined numerically and strain gauge measurements correspondence surface. dispersion...
A combined compression and acoustic emission (AE) test is proposed to study the scaling of fracture AE in concrete-like specimens with different size slenderness. The cylindrical concrete were drilled from two pilasters sustaining an Italian viaduct built 1950s. finite-element method model pure tests presented, which able describe both discrete cracking at matrix–aggregate interface smeared matrix. adopted mesoscale modelling directly accounts for aggregate dimensional distribution, each...
Abstract The present contribution investigates size effects on Wöhler's curve in accordance with dimensional analysis and intermediate asymptotics theory. These approaches provide a generalised equation able to interpret the specimen‐size curve. Subsequently, using different approach based lacunar fractality concepts, analogous scaling laws are found for coordinates of limit‐points curve, so that theoretical explanation is provided decrement fatigue resistance by increasing specimen size....
We describe the experimental and numerical assessment of a seventeenth-century masonry vault, which was required because change in use upper floor. During situ load test, we recorded acoustic emissions from as well displacements vault strains steel rods. compare data with results obtained finite element modeling cracking crushing. After validation, model allows us to assess ultimate load-bearing capacity vault.
The paper reviews some recent numerical applications for the interpretation and exploitation of acoustic emission (AE) monitoring results obtained from historical masonry structures materials. Among possible techniques, finite element method distinct are considered. analyzed models cover entire scale range, microstructure meso-structure, up to full-size real structures. micro-modeling includes heterogeneous concrete-like materials, but mainly focuses on texture where each brick mortar joint...