A5007775272- Masonry and Concrete Structural Analysis
- Seismic Performance and Analysis
- Structural Engineering and Vibration Analysis
- Structural Health Monitoring Techniques
- Building materials and conservation
- Structural Analysis of Composite Materials
- Geological and Geophysical Studies Worldwide
- Concrete Corrosion and Durability
- Infrastructure Maintenance and Monitoring
- Civil and Structural Engineering Research
- Hygrothermal properties of building materials
- Structural Behavior of Reinforced Concrete
- earthquake and tectonic studies
- Structural Response to Dynamic Loads
- Structural Load-Bearing Analysis
- Medieval Architecture and Archaeology
- Vibration Control and Rheological Fluids
- Seismology and Earthquake Studies
- BIM and Construction Integration
- Vibration and Dynamic Analysis
- Geography and Environmental Studies
- Earthquake Detection and Analysis
- Wind and Air Flow Studies
- Shape Memory Alloy Transformations
- Structural Analysis and Optimization
National Laboratory for Civil Engineering
2013-2024
University of Aveiro
2023
University of Minho
2023
Weatherford College
2021
University of Lisbon
2018
University of Trento
2015
National Institute of Engineering, Technology and Innovation
2007
Abstract This paper describes the behavior of single rigid‐block structures under dynamic loading. A comprehensive experimental investigation has been carried out to study rocking response four blue granite stones with different geometrical characteristics free vibration, and harmonic random motions base. In total, 275 tests on a shaking table were in order address issues repeatability results stability motion response. Two tools for numerical simulations rigid blocks are considered. The...
This article presents the results of LNEC-3D shaking table tests on two mock-ups, Brick House and Stone House, carried out in scope workshop "Methods challenges out-of-plane assessment existing masonry buildings." The mock-ups have a U shape with one facade wall orthogonal sidewalls. has central opening gable top, whereas sidewalls, acting as abutments, are either blind or window. A unidirectional seismic action, perpendicular direction to main wall, was applied. Out-of-plane behavior found,...
SUMMARY This paper aims to assess and improve the seismic performance of an existing masonry building with flexible floors, representative a Portuguese typology—‘gaioleiro’ buildings. The study involved tests dynamic identification two models (nonstrengthened strengthened) in shaking table. Each model was subjected several increasing amplitude. Before first test after each test, carried out, aiming at obtaining their vulnerability curves based on damage indicator obtained from decrease...
The analysis of the shaking table test a 3-wall stone masonry structure performed with discrete element model is presented. numerical model, created code 3DEC, employed rigid block representation and Mohr-Coulomb joint model. Joint stiffness calibration to match experimental natural frequencies discussed, as well boundary conditions simulate shake table. Comparisons are made measured displacements at key locations, modes deformation fracture walls. DEM was able reproduce important features...
This article describes the dynamical behavior of free-standing block structures under seismic loading. A comprehensive experimental investigation has been carried out to study rocking response four single blocks different geometry and associations two three blocks. The blocks, which are large stones high strength blue granite, were subjected free vibration, harmonic random motions base. In total, 379 tests on a shaking table in order address issues repeatability results stability motion...
Abstract Post‐earthquake damage reports have continuously highlighted the significant vulnerability of nonstructural elements to seismic events. Nonstructural has severe impact in building recovery, increasing socioeconomic losses even for low intensity In last few years, research efforts focused on development innovative solutions, be combined with damage‐resistant structural skeletons order obtain an overall high‐performance building. As part a European Union (EU)‐funded project,...
SUMMARY The present work describes a shaking table experimental campaign specifically developed for the characterisation of out‐of‐plane response full scale stone masonry façade. After description specimen and selection input motion presented in companion paper (Part 1), is illustrated extensively described. behaviour sacco façade terms displacements, velocities, accelerations recorded during tests. A one‐sided rocking was observed prior to collapse. impacts were clearly identified...
The Metropolitan Area of Lisbon (MAL) has the highest population and building density in Portugal, is exposed to medium high magnitude earthquakes due its geographical location. Currently, MAL housing stock constituted by approximately 35% masonry residential buildings with a large variability materials construction techniques, as result many centuries history. Most these were built before introduction first design code for safety against (RSSCS) 1958 RSCCS. 1958. National standard: Code...
Abstract Lessons from recent earthquakes have provided a tough reality check of the traditional seismic design approach and technologies, highlighting urgent need for paradigm shift performance‐based criteria objectives toward low‐damage philosophy technologies whole building system. Modern society is asking “earthquake proof” resilient buildings that are able to withstand events without compromising their functionality. The EU‐funded SERA (Seismology Earthquake Engineering Research...
SUMMARY The out‐of‐plane response of walls in existing stone masonry buildings is one the major causes vulnerability commonly observed post‐earthquake damage surveys. In this context, a shaking table (ST) test campaign was carried out on full‐scale façade mainly focusing characterization its overturning behaviour. structure tested ST partial reproduction an building from Azores, damaged during 9 July 1998 Faial earthquake. definition specimen as well selection input ground motion reported...
Summary Several factors influence the behaviour of infilled frames, which have been a subject research in past with moderate success. The new generation European design standards imposes need to prevent brittle collapse infills and makes structural engineer accountable for this requirement, yet it fails provide sufficient information masonry design. Therefore, present work aims at understanding seismic infill walls within reinforced concrete using both unreinforced solutions (bed joint...
This paper describes the development process and initial tests performed with a new energy dissipation damper based on Shape Memory Alloy (SMA) wires. The aim of this study was to develop iteration type devices, eventually methodology properly design them for any application. underlying concept our device is use double counteracting system pre-strained SMA wire sections as dissipating component. By using wires, focuses maximizing dissipation, partially relinquishing re-centering capabilities...