Effectiveness of Textile Reinforced Mortar (TRM) Materials in preventing Seismic-Induced Damage in a U-Shaped Masonry Structure Submitted to Pseudo-Dynamic Excitations
[EN] This paper presents the experimental results obtained from tests on a 2/3 scale U-shaped masonry building constructed in one of the ICITECH laboratories at the Universitat Politecnica de Valencia (Spain). The prototype measured 3.31 x 4.19 m(2) by 2.15 m high and had a wall thickness of 230 mm....
| Autores: | , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/160901 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/160901 |
| Access Level: | acceso abierto |
| Palabra clave: | Textile Reinforced Mortar (TRM) In-Scale Masonry Structure Experimental Pseudo Dynamic Tests Seismic Performance INGENIERIA DE LA CONSTRUCCION 09.- Desarrollar infraestructuras resilientes, promover la industrialización inclusiva y sostenible, y fomentar la innovación |
| Sumario: | [EN] This paper presents the experimental results obtained from tests on a 2/3 scale U-shaped masonry building constructed in one of the ICITECH laboratories at the Universitat Politecnica de Valencia (Spain). The prototype measured 3.31 x 4.19 m(2) by 2.15 m high and had a wall thickness of 230 mm. The masonry was composed of 230 x 110 x 50 mm(3) solid clay bricks with approximately 10 mm-thick mortar joints arranged in English bond. The tests were aimed at evaluating the effectiveness of cement-based reinforcing materials (Textile Reinforced Mortar) applied to weak masonry substrates severely damaged by horizontal loads such as those induced by a seismic event. The tests were carried out in three phases: (i) testing of the as-built structure, (ii) application of one external layer of TRM to restore the masonry's original load-bearing capacity and then (iii) testing the TRM-strengthened structure. Dynamic behaviour was monitored by both traditional and fibre optic sensors (FO), including 28 Linear Variable Displacement Transducers (LVDTs) and 3 long-gauge optical sensors. Strengthening effectiveness was evaluated by several parameters: hysteretic curves, strength degradation, computed cumulative energy dissipation and cracking mechanisms. TRM reinforcement was shown to significantly extend the load-bearing and displacement capacity of the masonry prototype, reducing seismic-induced damage applied by pseudodynamic excitation, although it had a limited effect on cumulative energy dissipation. |
|---|