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1st MEMSCON Event07/10/10, Bucharest TECNIC
EUROPEAN COMMISSION
SPECIFIC TARGETED RESEARCH
PROJECT – NMP – NANOSCIENCES, NANOTECHNOLOGIES MATERIALS AND NEW PRODUCTION TECHNOLOGIES
PROJECT TITLE:
RADIO FREQUENCY IDENTIFICATION TAGS LINKED TO ON BOARDS MICRO-ELECTRO-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 TECNIC – ITALY
MEMSCAP – FRANCE DBA – GREECE
RISA – GERMANY AMS – GREECE
ACH GREECE SITEX – ROMANIA
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
TECNIC1st MEMSCON Event
07/10/10, Bucharest
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
CONDITION BASED – MAINTENANCE MANAGEMENT
THE DEVELOPED MODULE
1st MEMSCON Event
07/10/10, Bucharest TECNIC
Procedural Flow Chart for each element
TECNIC
CONDITION BASED – MAINTENANCE MANAGEMENT
THE DEVELOPED MODULE
TECNIC1st MEMSCON Event07/10/10, Bucharest
The graphical representation
CONDITION BASED – MAINTENANCE MANAGEMENT
THE DEVELOPED MODULE
1st MEMSCON Event
07/10/10, Bucharest TECNIC
The element strengthening
THE ITALIAN EXPERIENCE
CLASSIFICATION OF THE DAMAGE OF THE STRUCTURAL COMPONENTS AFTER AN EARTHQUAKE
TECNIC
1st MEMSCON Event
07/10/10, Bucharest
FRAMES
D0
FLOORSSTAIRSROOFSHELLS
PRE-EXISTING DAMAGE
Structural tipologies
Damage level - extension
Global damage extension for
single structural tipology
Very Severe Damage - Collapse
VisualSurvey
• Cracking Survey• Potential Yielding of Reinforcement Steel•Structural Elements Misalignment•Structural/No Structural Elements Collapse•…
Moderate – Severe Damage
No Damage
Light Damage
(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))
