Effect of Masonry Infill Constitutive Law on the Global Response of Infilled RC Buildings

Buildings

Andrea Prota¹  Marco Gaetani d’Aragona¹  Maria Polese¹ 

[1] Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy;

关键词: infilled frames;    nonlinear time-history;    seismic capacity;    damage state fragility curves;    interstory drift ratios;    peak floor acceleration;   

DOI  :  10.3390/buildings11020057

来源: DOAJ

【 摘 要 】

Masonry-infilled reinforced concrete frames represent a very common construction typology across the Mediterranean countries. The presence of infills substantially modifies the global seismic performances of buildings in terms of strength, stiffness, and energy dissipation. Although several research studies focused on the overall performances of infilled reinforced concrete frames, the modeling of infill panels remains an open issue due to the complex interaction between the infill and the frame and the uncertainties involved in the definition of the problem. In the present paper, an existing masonry-infilled RC frame designed according to obsolete seismic codes is chosen as a case study. A refined three-dimensional finite element model is built for performing nonlinear static and time-history analyses in order to investigate some significant aspects related to the modeling of infills. In particular, it is investigated the effect of different infill constitutive models on the seismic performance of infilled RC building expressed in terms of engineering demand parameters such as interstory drift ratios and peak floor accelerations, and on the generation of damage fragility curves.

【 授权许可】

Unknown