EUROPEAN COMMISSION
SPECIFIC TARGETED RESEARCH
PROJECT – NMP – NANOSCIENCES, NANOTECHNOLOGIES
MATERIALS AND NEW PRODUCTION TECHNOLOGIES
PROJECT TITLE:
RADIO FREQUENCY IDENTIFICATION TAGS LINKED TO ON BOARDS MICROELECTRO-MECHANICAL SYSTEMS IN A WIRELESS, REMOTE AND
INTELLIGENT MONITORING AND ASSESSMENT SYSTEM FOR THE
MAINTENANCE OF CONSTRUCTED FACILITIES
PARTICIPANTS:
ICCS – GREECE
C2V – THE NETHERLANDS
IMEC – BELGIUM
UNITN – ITALY
IMEC NL - THE NETHERLANDS
MEMSCAP – FRANCE
TECNIC – ITALY
DBA – GREECE
RISA – GERMANY
AMS – GREECE
ACH GREECE
SITEX – ROMANIA
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION - BASED MAINTENANCE MANAGEMENT

Provide a wireless network of MEMS- based, strain and accelleration
sensors, for monitoring of Reinforced Concrete buildings

Provide a structural module that, based on input from strain and
acceleration sensors, assess the degree of damage on each structural
element under operating loads (differential settlements) and after an
earthquake

Provide a maintenance management module to select the remedial measure
and assess its cost
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION – BASED MAINTENANCE MANAGEMENT

Assessment of structural damage based on sensor measurements of strain
in case of operating loads and acceleration in case of an earthquake

Definition of the rehabilitation options and their unitary costs

Estimation of the repair costs through an integrated software to the
Memscon Package
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION – BASED MAINTENANCE MANAGEMENT
OPERATING LOADS

Early detection of differential settlements of the foundations as a function of
time

Evaluation of the internal forces for each structural element of the R.C.
building as a function of time

Assessment of the safety factors

Reliable information to the R.C. Building facility Managers
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION-BASED MAINTENANCE MANAGEMENT
EARTHQUAKE ACTION

The objective is to provide a quick estimate of costs of the structural
rehabilitation works

Accomplishment of this objective through the collection of damage indices
of discrete stuctural components

Connection of damage indices to damage ratios

Relation between Damage Ratios, Safety Factors and Damage States and
the various rehabilitation techniques of repair
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION BASED – MAINTENANCE MANAGEMENT
R.C. Moment Frame Buildings Rehabilitation Techniques
Column Jacketing
Column rehabilitation is often critical to
the seismic performance of a structure.
To prevent a story mechanism during an
earthquake, columns should never be the
weakest components in a building
structure. Jacketing of damaged columns
is used to solve problems of inadequate
shear capacity, inadequate concrete
compression strain and stress capacity
due to lack of concrete confinement and
inadequate lap splice. Concrete, FRP,
CFRP or steel overlays may be use in
jackets
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION BASED – MAINTENANCE MANAGEMENT
THE DEVELOPED MODULE
Procedural Flow Chart for each element
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION BASED – MAINTENANCE MANAGEMENT
THE DEVELOPED MODULE
The graphical representation
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
CONDITION BASED – MAINTENANCE MANAGEMENT
THE DEVELOPED MODULE
The element strengthening
1st MEMSCON Event
07/10/10, Bucharest
TECNIC
THE ITALIAN EXPERIENCE
CLASSIFICATION OF THE DAMAGE OF THE STRUCTURAL
COMPONENTS AFTER AN EARTHQUAKE
Visual
Survey
• Cracking Survey
• Potential Yielding of Reinforcement Steel
•Structural Elements Misalignment
•Structural/No Structural Elements Collapse
•…
Very Severe Damage - Collapse
(Source: Italia, Presidenza del Consiglio, Dipartimento della
Protezione Civile, MANUALE PER LA COMPILAZIONE DELLA
SCHEDA DI 1° LIVELLO DI RILEVAMENTO DANNO, PRONTO
INTERVENTO E AGIBILITÀ PER EDIFICI ORDINARI
DELL’EMERGENZA POST-SISMICA (AEDES))
Moderate – Severe Damage
Light Damage
Damage
level - extension
D0
No Damage
Structural
tipologies
FRAMES
FLOORS
STAIRS
ROOF
SHELLS
Global damage
extension for
single structural
tipology
PREEXISTING
DAMAGE
1st MEMSCON Event
07/10/10, Bucharest
TECNIC