1,720,983 research outputs found
Masonry infill construction and retrofit technique for the infill-frame interaction mitigation: Test results
No full textInfills with sliding joints to limit the post-earthquake damage: role and design of openings
No full textMasonry infill walls are typically considered non-structural elements in building design.
Nonetheless, their interaction with the structure during earthquakes is well documented in literature and
their significant effect on the building seismic performance highlighted. A critical aspect is the damage
suffered by traditional infills that can jeopardize the safety of inhabitants and lead to significant building
downtime. Recently, different innovative construction techniques have been proposed, aimed at obtaining
deformable infills characterized by low stiffness, low damageability and large deformation capacity, in order
to limit the infill-frame interaction and the post-earthquake damage. The paper discusses the role of a fullheight
opening in the seismic response of infills made deformable by adopting sliding joints. A summary of
the test results obtained by the authors on a real scale infill with horizontal sliding joints and a full height
opening is presented, together with a parametric study on the in-plane response of an infill with opening in
a “one story-one bay” RC frame. Focus is made on the interaction of the infill with the surrounding frame
and on the maximum actions in a critical component of the infill, namely the post located at the window’s
side to control the infill’s sliding mechanism. The parametric study, based on a numerical micro-modeling
approach, offers some preliminary guidelines for the design of the infilled frame, based on the opening
position, infill length and sliding joint configuration. The results show the positive effect of the posts’
deformability in limiting the shear action on both the frame’s columns and the post itself, including its
connection to the frame
Design of masonry infill walls with sliding joints for earthquake structural damage control
No full textMasonry-infilled RC frames can sustain significant damage in the event of strong ground shak-ing. The introduction of sliding joints in masonry infills can reduce the infill-frame interaction, ensure the in-fill out-of-plane stability, and minimize the infill damage under both in- and out-of-plane loading as shown by previous experimental and analytical studies. This paper summarizes previous studies and provides recom-mendations for the design and detailing of such structures. The proposed simplified design procedure can quantify the shear action on the frame columns due to the infill interaction which is compared to the case of traditional continuous infills
Engineered masonry infill walls for post-earthquake structural damage control: role of design parameters
No full textNumerical Investigation of the In-Plane Performance of Masonry-Infilled RC Frames with Sliding Subpanels
No full textIn-plane behaviour of innovative masonry infills based on different configurations of wooden sliding joints
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EXAMPLE OF THE BENEFITS OF A DISSIPATIVE ROOF DIAPHRAGM IN THE SEISMIC RESPONSE OF MASONRY BUILDINGS
No full textThe paper discusses the role of a ductile dissipative roof-diaphragm in the re- sponse of masonry structures subjected to out-of plane rocking of peripheral masonry walls. The benefits of this design choice are highlighted referring to a case study building repre- sentative of a recurrent typology of single nave masonry church, characterized by transverse diaphragm-arches. The activation of a controlled rocking of the nave lateral walls, allowed by the non-linear response of the roof diaphragm, is shown to be a resource in order to re- duce the in-plane shear action on the façade and triumphal arch head walls. A criterion to proportion the roof strength is suggested in order to limit the walls rocking amplitude within acceptable values to satisfy the required damage limit state. The results, here presented refer- ring to a case study application, are part of a research work dealing with the role of the rock- ing mechanism in the safety of masonry buildings against earthquake actions
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