Behavior of Masonry Vaulted Structures Strengthened Using Reinforced Concrete Beams on Top
Tomme: LIX (LXIII) Fascicle: 5 | 2013
Pages: 123-132
Abstract text:
Masonry churches are particularly prone to damages and partial or global collapses when subjected to horizontal loads. Knowledge of their seismic behavior is necessary to evaluate the seismic performance of these types of buildings in order to choose the proper retrofitting strategy. This paper studies the lateral stiffness of masonry vaulted structures with a head beams system of reinforced concrete as a rehabilitation solution. After carrying out geometrical assessments of two old churches and using laboratory tests on material samples taken from the site, linear static and dynamic analysis using finite element method were conducted on three-dimensional complexes with vaulted roofs. The dynamic behavior of the two analysed masonry churches with a head beams system is summarized by displaying the modal shapes with the corresponding values of the vibration period and the modal mass distribution in transversal and longitudinal direction.
Key Words:
masonry; vaulted churches; head beams system; modal analysis.
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