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Old Posted Dec 15, 2013, 9:38 AM
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The earthquakes in recent years around the world have put in first priority the major social and economic issue of the seismic behavior and overall seismic protection of structures against earthquakes .
Various methods have been developed to optimize the response of structures to seismic action
An important part of developments for seismic strengthening of buildings, does not agree with modern architectural needs , which require as much as possible free plans ( unbalanced construction) and reduction of structural elements of the building .
Also , the architectural needs differentiate the surface coverage of the building on each floor
. The problems arising from the application of these architectures claims is to create
* ultimate limit state at soft storey,

1. ) a change in the symmetry of the columns ,

1. ) stronger strain construction , because it creates a concentration effect of action on columns

* asymmetric structures is observed the torsional effect on floors .

a) We plan ductile structures, but we also need the torsional stiffness to stop the torsion of asymmetric floors.
b) Design methods yield (or else plastic zones) which are default locations of failure to be the first ultimate-yield in a powerful earthquake.
This seismic design planning today is very useful but insufficient current architectural needs.
In my quest to design the ultimate seismic system, I built a mechanism and design a method with high earthquake resistance because it improves the indicators of
1. ) the ductile

1. ) Of the plastic zones

* The torsional stiffness of asymmetric structures ;

1. ) Improves resistance of the column relative to the shear force

* Increases active behaviour of columns

1. ) Improves awry tension

* Reduces vibration and deformability of the construction

* reduces resonant vibration

* It helps avoid the concentration effect of action at soft storey,

* In the pretension there is no problem of insufficient impertinence of concrete and steel .

* Ensures stronger foundation.

* ensures damping decrement of seismic loads , which leads to reduced resonant response

* The invention automatically improves the traction of steel which is observed in prestressed steel

The invention automatically improves clamped structure with the ground
even when the structure has recurrent vibration.
( Many circles loads)
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