Calculation of masonry in-plane shear strengthening

Scientific paper - Original scientific paper

• Author: Tomislav Kišiček
• Author: Mislav Stepinac
• Author: tvrtko Renić
• Author: Ivan Hafner
• Author: Luka Lulić
• Author's institution: University of Zagreb; Faculty of Civil Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract (english)

The earthquake in Zagreb on March 22, 2020 damaged many buildings, most of which were
masonry and constructed before the use of earthquake-resistant construction regulations. That
quake indicated the need for strengthening masonry buildings for seismic action. Seismic forces
are mostly carried by the in-plane shear walls. Therefore, the main problem is proper calculation
of the required strengthening of the in-plane shear walls and solving the strengthening details,
but not only locally, at the level of individual walls, but also at the level of the whole building,
to properly cover all mechanisms of masonry failure and transferring seismic forces to the
foundation soil.
The paper presents the most common methods of calculation of in-plane shear wall strengthening
with a review of details that are not sufficiently well clarified or are neglected, i.e., poorly used in
practice. In addition to the calculation of strengthening of masonry with the reinforced concrete
layer (shotcrete) and dowels, modern methods of strengthening are considered, using FRP fabrics
or plates and FRCM systems. As these calculation methods are not implemented in the existing
codes, various recommendations are used based on similar assumptions, but with different
input parameters and safety factors that affect the calculation result and that should be properly
interpreted and used in the calculation.

• Keywords (english): masonry, shear strengthening, shotcrete, dowels, FRP, FRCM
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Unknown
• Publication version: Published version
• Publication title: 1st Croatian Conference on Earthquake Engineering 1CroCEE
• Numbering: pp. 797-807
• p-ISSN: 3043-8071
• DOI: https://doi.org/10.5592/CO/1CroCEE.2021.209
• URN:NBN: urn:nbn:hr:237:244736
• Publication: 2021-03
• Conference: Title: st Croatian Conference on Earthquake Engineering; Location: Zagreb, Croatia; Start date: 2021-03-22; End date: 2021-03-24; Assembly type: Lecture
• Type of resource: Text
• Publisher: Sveučilište u Zagrebu Građevinski fakultet
• Access conditions: Open access
• Created on: 2024-08-30 07:47:32