Armenian National Survey for Seismic Protection

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Armenian National Survey for Seismic Protection
Earthquake Engineering Center
www.nssp-gov.am
e-mail kh.zaven_at_nssp.gov-am

zkhlghatyan_at_yahoo.com
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Tasks ofEarthquake Engineering Center

• Realization the Initiative and Strategy of
  Armenian NSSP in building and structure seismic
  protection (in the frame of State Complex
  Programs on Seismic risk reduction in the
  territory of Armenia and city of Yerevan).
• Seismic risk evaluation and mapping for towns and
  settlements in Armenia.
• Rapid damage estimation of structures and
  buildings in epicentral zone in case of major
  earthquake.

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• Vulnerability assessment for critical facilities
  (NPP, chemical plants, dams and reservoirs, and
  lifelines.
• Elaboration, testing and implementation of
  techniques and procedures for reinforcement and
  retrofitting of existing buildings and
  structures.
• Development of experimental models and research
  aiming at strengthening of buildings and
  structures.
• Seismic monitoring of buildings and structures
  through installation and operation strong motion
  instruments.
• Research on ground strong motion.
• 9. Development and implementation of Early
  Warning System.

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Structure of Earthquake Engineering Center

• Building and Structure Seismic Risk Evaluation
  Division
• Critical Facilities Seismic Vulnerability
  Assessment Division
• Experimental Research Division
• Seismically Protective Constructive Systems and
  New Constructive Solution Division
• 5. Ground Strong Motion and Building Monitoring
  Division

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Tasks of Building and Structure Seismic Risk
Evaluation Division

• Data base creation for urban planning of towns
  and settlements using GIS technology
• Urban planning detailed mapping
• Estimation of facilities design seismic
  resistance
• Seismic risk evaluation for towns and settlements
• Seismic risk mapping for towns and settlements
• Rapid damage estimation for towns and
  settlements in epicentral zone in case of major
  earthquake.

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Geological map in Armenia
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Distribution pattern for the seismic risk in
Armenia
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Seismic Risk in Yerevan City
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Seismic Microzonation Map of Yerevan City
0.32g 0.40g 0.38g
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SEISMIC RISK DISTRIBUTION FOR YEREVAN CITY
High Moderate Low
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• Low-rise stone buildings (private)
• Mixed stone-complex construction buildings
• Large panel buildings
• Frame panel buildings
• Buildings constructed with story grown-up method
• Braced buildings

Map of the risk collapse for different
construction type buildings in Yerevan city
(design types 1,2,, are indicated in percentage
of total number of buildings in each square 1,2,)
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Capital buildings 0.1g
Capital buildings 0.2g
Private buildings
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Tasks of Critical Facilities Seismic
Vulnerability Assessment Division

• Data base creation for most earthquake vulnerable
  buildings in towns and settlements
• Vulnerability assessment for critical facilities
  (NPP, chemical plants, dams and reservoirs, and
  lifelines)
• Engineering research in construction aiming at
  compliance of new methodology and seismic
  building codes

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• In situ estimation of expected ground maximum
  acceleration
• In situ estimation of ground and structure
  prevailing periods
• In situ creation of design accelerograms
• Definition of technical condition and actual
  seismic resistance for facilities, development of
  methods for vulnerability reduction
• Rapid damage estimation for towns and
  settlements in epicentral zone in case of major
  earthquake
• Building and structure behavior study in case of
  major earthquake
• Analysis of earthquake consequences

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Borders of adjacent areas to Azat reservoir in
case of possible flooding
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         THE ESTIMATION OF BUILDING S
VULNERABILITY
By the constructive decisions residential
buildings in Armenia are divided into six
categories
1. stone buildings (less than 5 story )
2. large-panel buildings (9 story )
3. frame-panel buildings (9 story )
4. frame and frame-braced (12-16 story )
5. constructed by floor-grade method (12-16 story)
6. new structural design (less than 9 story )
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STONE BUILDINGS (less than 5 story )
30 of dwelling fund
High vulnerability
Strengthening required
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The prevailing period in the transverse
direction of the building is 0.38 sec. Obtained
value is 1.36 times more than normative
prevailing period. According to the Codes of
Armenia such increase of the normative prevailing
period corresponds to the third degree of damage,
which requires Rehabilitation and reinforcement
of the building.
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LARGE-PANEL BUILDINGS (9 story)
10 of dwelling fund
Low vulnerability
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FRAME-PANEL BUILDINGS (9 story)
15 of dwelling fund
High vulnerability, 95 from 138 of 9-storey frame
panel buildings of 111 series were totally
collapsed in Gyumri
After Spitak Earthquake buildings will not
erected more
Strengthening required
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FRAME AND FRAME-BRACED (12-16 story)
15 of dwelling fund
Not existed in disaster zone
Low vulnerability
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CONSTRUCTED BY FLOOR-GRADE METHOD (12-16 story)
Mostly in Yerevan-city 7 of dwelling fund
2 buildings collapsed in Gyumri
After Spitak Earthquake buildings will not
erected more.
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Tasks of Seismically Protective Constructive
Systems and New Constructive Solution Division

• Analysis of constructive solutions for existing
  buildings and development of new conceptual
  solutions for seismic resistance
• Analysis of constructive solutions for
  retrofitted buildings in disaster zone and
  development of new solutions

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• Estimation of seismic loads for buildings and
  structures using accelerograms of real
  earthquakes
• Development and implementation of new
  technologies for strengthening of buildings and
  structures
• Development and implementation of damper
  equipment for building and structure seismic
  resistance increase
• Theoretical and practical research on shim-rubber
  isolation
• Monitoring of buildings using seismic protective
  systems

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Model of 9-story frame building with upper
flexible floor
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General view of a building with upper flexible
floor
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Upper flexible floor on LRB
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Using the seismic insulators for the buildings
and constructions
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Armenian International Airport.Moment of
Experiment of Lead Rubber Bearing (Kuala-Lumpur,
Robinson Seismic Ltd)
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Building before restoration
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Constructive solutions
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Building after restoration
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Tasks of ExperimentalResearch Division

• Development and implementation of new building
  strengthening technologies
• Development of experimental models and research
  aiming at strengthening of buildings and
  structures
• Experimental research on shim-rubber isolation
• Experimental selection of appropriate damper
  equipment for building and structure seismic
  resistance increase
• Testing of building materials and constructions

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Testing of seismic insulators (vertical and
horizontal deformation)
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Model of Building with new Dynamic Damping
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Dynamic Model of 12-storey Building (Scale 115)
with Dynamic Damping
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View of Dynamic Damping Model
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Tasks of Ground Strong Motion and Building
Monitoring Division

• Seismic Hazard Assessment of the Territory of
  Armenia
• Seismic Microzoning
• Earthquake Early Warning System Development
• Seismic Monitoring of Buildings and Structures

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Armenian Strong Motion NetworkInstrument
Locations
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Earthquake Early Warning System around Yerevan
City
The zones of the influence with intensity of 7 on
Yerevan
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Seismic Monitoring of Buildings (Fragment)