Perspectives and Approaches for the Out-of-Plane Testing of Masonry Infill Walls
- PDF / 6,566,661 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 71 Downloads / 206 Views
RESEARCH PAPER
Perspectives and Approaches for the Out-of-Plane Testing of Masonry Infill Walls A. Furtado 1 & A. Arêde 1 & J. Melo 1 & H. Rodrigues 2
&
N. Pinto 1 & H. Varum 1
Received: 31 March 2020 / Accepted: 26 October 2020 # The Society for Experimental Mechanics, Inc 2020
Abstract It is widely accepted that further and more in-depth research is required on the out-of-plane seismic response of masonry infill walls to increase knowledge regarding this particular behaviour and to develop effective strengthening strategies for preventing their collapse. However, such experimental tests are difficult to perform and the scientific community recognizes the complexity inherent to the test apparatus, loading approaches and loading protocols. At the Laboratory for Earthquake and Structural Engineering (LESE), several efforts were carried out over the last years towards characterizing the out-of-plane behaviour of full-scale MIW. Two test setups were developed using two different approaches for applying the out-of-plane loadings. This manuscript provides an overview of the test setups adopted in the literature by other authors and discusses their implication in the MIW response. Therefore, the considerations assumed in the development of the test setups at the LESE laboratory are provided starting by describing the out-of-plane tests with airbags and after that with pneumatic jacks. Further information regarding both tests setups is described and discussed throughout the manuscript. Experimental results of two specimens tested with both approaches are presented, highlighting the main differences and similarities. Keywords Masonry infill walls . Experimental testing . Out-of-plane behaviour . Test setup . Literature review
Introduction The use of experimental tests for structural engineering is widely popular for characterizing the expected behaviour of structures and/or structural elements and their mechanical and material properties, to obtain required information for the safety assessment of existing structures and/or design of new structures. Different types of experimental tests can be performed with the same goal, namely quasi-static or dynamic tests where the specimen is subjected to quasi-static or dynamic loading to simulate the seismic demand. Each test is planned according to prescribed goals, and their choice depends on technical and economic issues and the capability of the facilities.
* H. Rodrigues [email protected] 1
CONSTRUCT-LESE, Department of Civil Engineering, Faculty of Engineering of the University of Porto, Porto, Portugal
2
RISCO, Department of Civil Engineering, University of Aveiro, Aveiro, Portugal
In recent years, the interest in studying the masonry infill wall (MIW) out-of-plane (OOP) behaviour increased significantly. A high number of OOP collapses was reported in numerous post-earthquake survey damage assessment reports [1–5]. Due to their interaction with the surrounding reinforced concrete (RC) frame, MIW can develop enhanced OOP strength through an arching mechanism, which m
Data Loading...
