Structural Assessment of  Historical Masonry structure
Student: Bc. Richard Šusták
Supervisor: doc. Dr. Ing. Luboš Podolka
Advisor: Ing. Carmen Amaddeo Phd.
Oponent: Ing. Robert Šinkner, MBA
6/2019

Outline
´Motivation
´Aim of thesis
´Study case – Description
´Study case – Analysis 1.
´Study case – Analysis 2.
´Analysis results
´Questions

Motivation
´Hot topic
´Not well known in Czech Republic
´Passion for architectural heritage
´Cooperation on real project
´

Aim of thesis
´ The aim of this master´s thesis is to perform a seismic evaluation before and after retrofitting
of an historical masonry building located in seismic zone based on Italian code NTC 2008.
´ The chosen historical building is the “Palizzi” Castle located in the Reggio Calabria Province,
Italy. The “Palizzi” castle is composed of a ground floor, first floor and under-roof level. The
structure of the castle is mostly brick masonry with poor quality materials.
´ The Finite Element Model (FEM) of the structure has been built using SAP2000 software (Computers
and Structures, Inc.), in particular it was performed a response spectrum analysis and also
pushover analysis by using Etabs software (Computers and Structures, Inc.) of the structure.
Results were verified and compared.
´ The outcome of this thesis will be comparison of linear and non-linear analysis on existing
masonry structure with and without retrofitting.

Study case – „Palizzi“ castle
´Adress: Via Sant´Angelo, 14 Regio Calabria (RC) Palizzi, 89038, Italy
´Name of building: „Palizzi“ castle
´Permanent parcel: st. 113, 114
´Building use: Historical monument
´Owner: Municipality of Palizzi
´

Study case – „Palizzi“ castle
´
Cadastral map of Palizzi municipality showing the location of the castle
Map of Italy with location of Palizzi town
(https://www.google.cz/maps/)

Lay-outs:



Sections:



Photo-documentation



Finite Element Model (FEM)
Archicad 21.
SAP 2000 v.19.3.

Material Properties
´Suggested properties based on historical sources and comparison
´Suggested intervention properties
´
´Material properties based on on-site experiments and tests.
´Suggested intervention properties

Analysis 1.: Response spectrum



Analysis 1.: Loads
´12. load combinations
´1. envelope
´Roof and slabs – with and without ´SRSS - Square Root of Sum of Squares
´

Analysis 1.: Results - URM
Model without slabs – direct stress
Model without slabs – shearing stress

Analysis 1.: Results - RM
Retrofitted model with slabs – direct stress
Retrofitted model with slabs – shearing stress

Analysis 1: Verification and conclusion



Analysis 2.: Pushover analysis
´Finite element model
´Hinges
´Lateral load
´Verification methods
´ - Base shear
´ - Target displacement
´
´
´

Analysis 2.: Base shear results - URM
X - DIRECTION
Y - DIRECTION

Analysis 2.: Base shear results - RM
X - DIRECTION
Y - DIRECTION

Analysis 2.: Target displacement - URM
X - DIRECTION
Y - DIRECTION

Analysis 2.: Target displacement - URM
X - DIRECTION
Y - DIRECTION

Analysis 2.: Verification
FE model reference
Direction
Fy*
dy*
(mm)
dt*
(mm)
URM
X
3,266
18,307
2,917
Y
2,283
26,002
4,67
RM
X
5,405
23,436
4,952
Y
4,706
32,494
6,141
dy*: yield displacement
Fy*: yield force
dt*: target displacement

Thank you for your attention!
I want to acknowledge “Studio KR e Associati” and “Studio Associato Amaddeo-Fiumanò” for providing
the blueprint and the design specification of the castle.
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Questions:
Supervisor: doc. Dr. Ing. Luboš Podolka
´Jak by bylo možno počítanou historickou stavbu zabezpečit vůči účinkům zemětřesení ?
´Počítá majitel objektu s ponecháním stavby ve stávajícím stavu bez střechy a s poškozenými
stropními konstrukcemi, nebo bude nějakým způsobem stavba opravena ?
Oponent:  Ing. Robert Šinkner, MBA.
´Jakou metodou byl objekt zaměřen? Laserovým skenováním nebo klasickými geodetickými metodami?
´Jak jste se dostal k takové zajímavé mezinárodní spolupráci?

Retrofitting methods

´Bamboo-Band retrofitting technique
´Reinforced plaster
´Shotcrete
´Fiber-Reinforced polymer (FRP)
´Post-tensioning
´Confinement
´Center core
´Injection
´
´

Experiment - NHERI@UCSD
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