Quick repair of damaged infill walls with externally bonded FRPU Composites: shake table tests / Łukasz Hojdys, Piotr Krajewski, Arkadiusz Kwiecień [et al.], Marcin Tekieli [et al.], Bogusław Zając ... więcej

Quick repair of damaged infill walls with externally bonded FRPU Composites: shake table tests / Łukasz Hojdys, Piotr Krajewski, Arkadiusz Kwiecień [et al.], Marcin Tekieli [et al.], Bogusław Zając [et al.] // Journal of Composites for Construction [Dokument elektroniczny]. – 2023, Vol. 27, Iss. 1, 22 s. : fot., rys., wykr. – Tryb dostępu: https://ascelibrary.org/doi/10.1061/%28ASCE%29CC.1943-5614.0001268. – Oznaczenie ref./art.: 04022084. – Bibliogr. s. 21-22, Abstr. – doi: 10.1061/(ASCE)CC.1943-5614.0001268. – ISSN 1943-5614

The paper presents the results of research on a nearly full-scale, 1-story reinforced-concrete (RC) spatial frame structure with ma-sonry infill walls tested on a shake table. The experiment was conducted ... więcej

The paper presents the results of research on a nearly full-scale, 1-story reinforced-concrete (RC) spatial frame structure with ma-sonry infill walls tested on a shake table. The experiment was conducted in four phases to investigate the in-plane and out-of-plane responses ofthe infill walls of the specimen. The use of a digital image correlation (DIC) technique with noncommercial analysis system allowed the com-putation of principal strains for the infill. Two methods of infill-RC frame protection using polyurethane resin (PU)flexible joints (PUFJ) at theRC frame-infill connection and an external innovativefiber-reinforced PU (FRPU) repair system were considered in the research. The test resultsindicated that the in-plane and out-of-plane infill performance was enhanced under seismic excitations. The PUFJs at the interface of the frameand infill walls helped the infills to withstand dynamic excitation of high intensity with repairable damage. Furthermore, the externally appliedglass FRPU repair system efficiently protected the damaged masonry infills against collapse under out-of-plane excitation while restoring a sig-nificant portion of their in-plane stiffness. The variable contributions of the RC frame and of the brick infills when protected with innovativejoints are evaluated through three-dimensionalfinite-element models.