Assessment of seismic behaviour of heritage masonry buildings using numerical modelling

2016 ◽  
Vol 8 ◽  
pp. 29-47 ◽  
Author(s):  
F. Clementi ◽  
V. Gazzani ◽  
M. Poiani ◽  
S. Lenci
Keyword(s):  
Numerical Modelling ◽  
Masonry Buildings ◽  
Seismic Behaviour

scholarly journals Fragility curves for Italian URM buildings based on a hybrid method

2021 ◽  
Author(s):  
A. Sandoli ◽  
G. P. Lignola ◽  
B. Calderoni ◽  
A. Prota
Keyword(s):  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Limit State ◽  
Ultimate Limit State ◽  
Masonry Building ◽  
Masonry Buildings ◽  
Seismic Behaviour ◽  
Building Stock ◽  
Ground Acceleration ◽  
Damage Scenario

AbstractA hybrid seismic fragility model for territorial-scale seismic vulnerability assessment of masonry buildings is developed and presented in this paper. The method combines expert-judgment and mechanical approaches to derive typological fragility curves for Italian residential masonry building stock. The first classifies Italian masonry buildings in five different typological classes as function of age of construction, structural typology, and seismic behaviour and damaging of buildings observed following the most severe earthquakes occurred in Italy. The second, based on numerical analyses results conducted on building prototypes, provides all the parameters necessary for developing fragility functions. Peak-Ground Acceleration (PGA) at Ultimate Limit State attainable by each building’s class has been chosen as an Intensity Measure to represent fragility curves: three types of curve have been developed, each referred to mean, maximum and minimum value of PGAs defined for each building class. To represent the expected damage scenario for increasing earthquake intensities, a correlation between PGAs and Mercalli-Cancani-Sieber macroseismic intensity scale has been used and the corresponding fragility curves developed. Results show that the proposed building’s classes are representative of the Italian masonry building stock and that fragility curves are effective for predicting both seismic vulnerability and expected damage scenarios for seismic-prone areas. Finally, the fragility curves have been compared with empirical curves obtained through a macroseismic approach on Italian masonry buildings available in literature, underlining the differences between the methods.

scholarly journals Numerical modelling of the seismic behaviour of a 7-story building: NEES benchmark

2008 ◽  
Vol 42 (10) ◽  
pp. 1433-1442 ◽  
Author(s):  
Stéphane Grange ◽  
Panagiotis Kotronis ◽  
Jacky Mazars
Keyword(s):  
Numerical Modelling ◽  
Seismic Behaviour ◽  
Story Building

Seismic behaviour of masonry buildings built of low compressive strength units

2018 ◽  
Vol 16 (12) ◽  
pp. 6191-6219
Author(s):  
Petra Triller ◽  
Miha Tomaževič ◽  
Matija Gams
Keyword(s):  
Compressive Strength ◽  
Masonry Buildings ◽  
Seismic Behaviour

Resilience improvement of historical timber floors subjected to cyclic loading

2021 ◽  
Author(s):  
Shota Urushadze ◽  
Miloš Drdácký
Keyword(s):  
Cyclic Loading ◽  
Numerical Modelling ◽  
System Performance ◽  
Historic Buildings ◽  
Seismic Behaviour ◽  
Plane Shear ◽  
Floor Systems ◽  
Experimental Behaviour

<p>Horizontal diaphragms play an important role in the seismic behaviour of old buildings, and their behaviour when loaded by in-plane shear has not yet been sufficiently described in literature. The distribution of horizontal forces among bearing walls is strongly dependent on the stiffness of horizontal components and their connections to the vertical structures. The paper focuses on horizontal diaphragms of historic buildings, such as traditional floor systems and feasible intervention technologies for the improvement of their resilience. Experimental behaviour of original and strengthened wooden floors is analysed in order to obtain information on the system performance and supply parameters for use in numerical modelling.</p>

Numerical Modelling of Masonry Barrel Vaults Reinforced with Textile Reinforced Mortars

2017 ◽  
Vol 747 ◽  
pp. 11-19 ◽  
Author(s):  
Giancarlo Ramaglia ◽  
Gian Piero Lignola ◽  
Francesco Fabbrocino ◽  
Andrea Prota
Keyword(s):  
Numerical Modelling ◽  
Seismic Vulnerability ◽  
Masonry Buildings ◽  
Strengthening Effect ◽  
Ultimate Capacity ◽  
Incremental Analysis ◽  
Heritage Buildings ◽  
Complex Architecture ◽  
Textile Reinforced Mortar ◽  
Barrel Vaults

Among masonry buildings characterized by a complex architecture, a significant portion is represented by heritage buildings. A significant seismic vulnerability is due to the presence of thrusting elements like as arches and vaults. Their ultimate capacity can be improved by means of several strengthening techniques. However the advantages of using Textile Reinforced Mortars (TRM) are well highlighted in the scientific literature.The present work focuses on ultimate behaviour of masonry barrel vaults, in the framework of incremental analysis, including the strengthening effect. The analytical model is compared in terms of ultimate capacity and failure mode with a full scale masonry barrel vault dynamically tested. After the first tests, the vault has been strengthened with Textile Reinforced Mortar (TRM) and tested again.

scholarly journals Timber Based Integrated Techniques to Improve Energy Efficiency and Seismic Behaviour of Existing Masonry Buildings

2021 ◽  
Vol 13 (18) ◽  
pp. 10379
Author(s):  
Matteo Busselli ◽  
Davide Cassol ◽  
Alessandro Prada ◽  
Ivan Giongo
Keyword(s):  
Masonry Walls ◽  
Masonry Buildings ◽  
Unsteady State ◽  
Heat Transmission ◽  
Nonlinear Analyses ◽  
Seismic Behaviour ◽  
Improve Energy Efficiency ◽  
Thermal Bridge ◽  
Hygrothermal Performance ◽  
Point To Point

The retrofit solutions studied herein aim to improve the seismic and energetic behaviours of existing masonry buildings to guarantee safety and the preservation of the building heritage. The retrofit consists of timber-based products (panels and strong-backs) fixed to the masonry walls using mechanical point-to-point connections; the durability and the hygrothermal performance of the solutions are guaranteed by insulation layers and membranes. The thermophysical properties of the retrofitted walls were evaluated by means of analytical and numerical analyses, considering the heat transmission in both steady and unsteady state conditions and the thermal bridge in correspondence with the corner of the wall. The in-plane seismic behaviour of the retrofitted walls was numerically investigated through nonlinear analyses. The influence of various parameters (such as masonry and insulation properties) on the performance of the retrofit solutions was analysed via parametric simulations.

scholarly journals Fragility Curves for Italian Urm Buildings Based on a Hybrid Method

2021 ◽  
Author(s):  
Antonio Sandoli ◽  
Gian Piero Lignola ◽  
Bruno Calderoni ◽  
Andrea Prota
Keyword(s):  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Limit State ◽  
Ultimate Limit State ◽  
Masonry Building ◽  
Masonry Buildings ◽  
Seismic Behaviour ◽  
Building Stock ◽  
Ground Acceleration ◽  
Damage Scenario

Abstract A hybrid seismic fragility model for territorial-scale seismic vulnerability assessment of masonry buildings is developed and presented in this paper. The method combines expert-judgment and mechanical approaches to derive typological fragility curves for Italian residential masonry building stock. The first classifies Italian masonry buildings in five different typological classes as function of age of construction, structural typology, and seismic behaviour and damaging of buildings observed following the most severe earthquakes occurred in Italy. The second, based on numerical analyses results conducted on building prototypes, provides all the parameters necessary for developing fragility functions.Peak-Ground Acceleration (PGA) at Ultimate Limit State attainable by each building’s class has been chosen as an Intensity Measure (IM) to represent fragility curves: three types of curve have been developed, each referred to mean, maximum and minim value of PGAs defined for each buildings class.To represent the expected damage scenario for increasing earthquake intensities, a correlation between PGAs and Mercalli-Cancani-Sieber (MCS) macroseismic intensity scale has been used and the corresponding fragility curves developed.Results show that the proposed building’s classes are representative of the Italian masonry building stock and that fragility curves are effective for predicting both seismic vulnerability and expected damage scenarios for seismic-prone areas. Finally, the fragility curves have been compared with empirical curves obtained through a macroseismic approach on Italian masonry buildings available in literature, underlining the differences between the methods.

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