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2012 EERI SDC - Team UTCN

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by

Máté Péntek

on 25 August 2016

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Transcript of 2012 EERI SDC - Team UTCN

Seismic protection
Construction
Testing
Design concept
Friction dampers
Friction forces
Elasticity modulus
Tensile strength
Cutting balsa sheets into strips
Templates
Adhesive CA - fluid and superfluid
Pre-fabricated levels
Friction dampers
Bending
Buckling
"Making the simple complicated is commonplace, making the complicated simple, that's creativity." (Charles Mingus)

inclination of
exterior columns
Cross sectional symmetry octagonal shape
Structural simplicity
Uniformity
Symmetry
Redundancy
Resistance and stiffness
`
`
Reduction of forces and deflections;
Performance based design at low cost;
Saving in cost of new construction and retrofit of existing buildings.
Conclusions
Predictions based on computation
Seismic response of the structure
with 5% damping using SAP2000
time-history analysis
Earthquakes do not kill people, poorly designed structures do


Our damping devices
First test
Second test
SAP2000 analysis
Testing friction dampers
Testing balsa structures
measured
and
computed results
Level assembly
Test without seismic protection
appropriate structural conformation - control test
Two structures:
use of added mass and friction dampers
friction damper on all sides
Third test
Final solution - improved friction dampers and bracings
Provide supplemental damping and stiffness for added stability under seismic loads;
Not active during service loads - no possibility of failure due to fatigue before an earthquake;
Reliable and repeatable performance at low cost.

variable
moment of inertia
Behind every succsessful business stands a great idea.
beyond
physical value
success
wealth
continuity
Mitigation of seismic effects through energy dissipation
Other possibilities
added mass
fishing line
10-20% reduction of response
Mechanical properties
assessment

Based upon observations and measured values on previous structures:

acceleration values are accurate
displacement values are approximate
density, elasticity modulus determined
experimental
modal time history analysis
changing the different parameters till we
meet the effective test results
2012 Undergraduate
Seismic Design Competition
10-13th April, Memphis, TN
Faculty of Civil Engineering
Technical University
Cluj-Napoca, Romania
the proposed model withstands severe earthquakes
elegant
simple
efficient
cheap
Nice sunset view from upper levels

Maximum rentable area for high revenue
Full transcript