Preprint Article Version 1 This version is not peer-reviewed

Some of the Latest Active Strengthening Techniques for Masonry Buildings: A Critical Analysis

Version 1 : Received: 18 February 2019 / Approved: 20 February 2019 / Online: 20 February 2019 (12:18:11 CET)

A peer-reviewed article of this Preprint also exists.

Ferretti, E.; Pascale, G. Some of the Latest Active Strengthening Techniques for Masonry Buildings: A Critical Analysis. Materials 2019, 12, 1151. Ferretti, E.; Pascale, G. Some of the Latest Active Strengthening Techniques for Masonry Buildings: A Critical Analysis. Materials 2019, 12, 1151.

Journal reference: Materials 2019, 12, 1151
DOI: 10.3390/ma12071151

Abstract

The present paper deals with the retrofitting of unreinforced masonry (URM) buildings, subjected to in-plane shear and out of-plane loading when struck by an earthquake. After an introductive comparison between some of the latest punctual and continuous active retrofitting methods, the authors focused on the two most effective active continuous techniques, the CAM system and the Φ system, which also improve the box-type behavior of buildings. These two retrofitting systems allow us to increase both the static and dynamic load-bearing capacity of masonry buildings. Nevertheless, information on how they actually modify the stress field in static conditions is lacking and sometimes questionable, in the literature. Therefore, we performed a static analysis in the plane of Mohr/Coulomb, with the dual intent to clarify which of the two is preferable under static conditions and whether the models currently used to design the retrofitting systems are fully adequate.

Subject Areas

retrofitting; earthquakes; masonry; historical buildings; active reinforcement; Mohr’s circles; CAM system; Φ system

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