Out‐of‐plane behaviour of a full scale stone masonry façade. Part 2: shaking table tests

Abstract

SUMMARY The present work describes a shaking table experimental campaign specifically developed for the characterisation of the out‐of‐plane response of a full scale stone masonry façade. After the description of the specimen and the selection of the input motion presented in a companion paper (Part 1), the experimental campaign is illustrated and extensively described. The out‐of‐plane behaviour of the sacco masonry façade is presented in terms of displacements, velocities, and accelerations recorded during the shaking table tests. A one‐sided rocking response of the façade was observed prior to collapse. The impacts were clearly identified in the acceleration records. The façade overturning occurred with the expected failure mode, as predicted in the design of the test. Finally, some conclusions are drawn regarding the observed behaviour and particular features of this type of stone masonry constructions, which may influence the global behaviour of the façade. Copyright © 2013 John Wiley & Sons, Ltd.

Out‐of‐plane behaviour of a full scale stone masonry façade. Part 1: specimen and ground motion selection

“…Moreover, as reported in [13] the selected ground motion was successfully applied to façade specimen obtaining a seismic response consistent with the typically observed out-of-plane failure modes, hence fully achieving the initial goals of its selection.…”

“…The selected seismic motion proved to be adequate taking into account the main goal of the ST test (i.e. no significant damage should be imparted to the masonry walls prior to activation of the overturning mechanism) as reported in the Part 2 of this work, included in a companion paper where test results and data interpretation are presented.…”

“…A two-storey house, in addition to Figure 1. Top view of the Laboratório Nacional de Engenharia Civil triaxial shaking table with a specimen after collapse (H2 specimen [13]), with representation of the transversal direction.…”

Simulation of masonry out‐of‐plane failure modes by multi‐body dynamics

“…The shaking‐table tests simulated in the present work refer to full‐scale seismic experiments performed at the Laboratório Nacional de Engenharia Civil (LNEC), Lisbon and reported in . The shaking‐table tests aimed at characterizing the out‐of‐plane behavior of a full scale masonry façade (3.35 m height) with two returning walls at the edges (plan dimensions of the specimen, 4.3 × 2.15 m 2 ) built on sacco (sack) stone masonry (double‐leaf walls with poor infill, total thickness of 65 cm).…”

“…The friction model adopts a simple velocity-based friction model for contact interfaces [41] with four parameters: μ sstatic friction coefficient, μ ddynamic friction coefficient, v sstatic friction transition velocity, and v ddynamic friction transition velocity. [46,47]. The shaking-table tests aimed at characterizing the out-ofplane behavior of a full scale masonry façade (3.35 m height) with two returning walls at the edges (plan dimensions of the specimen, 4.3 × 2.15 m 2 ) built on sacco (sack) stone masonry (double-leaf walls with poor infill, total thickness of 65 cm).…”