Out-of-plane experimental behaviour of T-shaped full scale masonry wall strengthened with composite connections

Autor: Gennaro Maddaloni, Andrea Prota, M. Di Ludovico, Alberto Balsamo
Přispěvatelé: Maddaloni, G., DI LUDOVICO, Marco, Balsamo, Alberto, Prota, Andrea
Rok vydání: 2016
Předmět:
D. Mechanical testing
Materials science
C. Damage mechanic
Masonry material
Composite number
0211 other engineering and technologies
Full scale
Masonry veneer
02 engineering and technology
T-shaped masonry wall
A. Carbon fibre
Industrial and Manufacturing Engineering
law.invention
Failure (mechanical)
Innovative solution
law
021105 building & construction
Pultrusion
Composite material
Masonry construction
Spiral
Structural connections
Walls (structural partitions)
Masonry wall
Bearing (mechanical)
business.industry
Mechanical Engineering
Mechanical testing
Structural engineering
Stainless steel fabric
Masonry
021001 nanoscience & nanotechnology
Connectors (structural)
Stainless steel
Composite connection
Mortar
Retaining wall
Mechanics of Materials
Horizontal displacement
Ceramics and Composites
Carbon fiber
0210 nano-technology
business
Damage mechanic
E. Pultrusion
Zdroj: Composites Part B: Engineering. 93:328-343
ISSN: 1359-8368
DOI: 10.1016/j.compositesb.2016.03.026
Popis: The seismic behaviour of existing masonry buildings strongly depends on the type of connections between orthogonal walls and between walls and floors. Recent earthquakes have clearly shown that the most common failure modes of existing masonry buildings involve out-of-plane mechanisms. In these structures, the structural connections are crucial to achieve a favourable distribution of horizontal loads and to avoid out-of-plane mechanisms. In order to investigate on the effectiveness of typical existing structural connections between bearing walls in masonry buildings, an experimental program has been carried out on a full scale T-shape tuff masonry specimen. A weak connection has been designed between the two orthogonal walls of the specimen in order to reproduce common execution practices. Three tests have been performed under the simultaneous application of axial load and monotonic or cyclic horizontal displacements on the specimen in three different configurations: as-built, repaired, and repaired and strengthened with an innovative solution based on the use of composite systems. The strengthening solution consisted of grouted anchors made by hollow CFRP pultruded carbon tubes wrapped with longitudinal and spiral stainless steel fabrics to increase the bond between mortar and tubes. The paper reports the main aspects related to the experimental test setup, the theoretical predictions in terms of strength capacity, the main experimental results at global and local level, and the crack patterns and failure mechanisms of the as-built and strengthened specimen. © 2016 Elsevier Ltd. All rights reserved.
Databáze: OpenAIRE
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