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Seismic Insulation of Constructions

#K-425


To Investigate Seismic Stability of Buildings and Constructions with Seismo-insulating Foundation During Earthquakes and Technogeneous Affects

Tech Area / Field

  • OTH-BIT/Building Industry Technology/Other

Status
3 Approved without Funding

Registration date
01.11.1999

Leading Institute
Research and Design Institute for Seismic Construction and Architecture, Kazakstan, Almaty

Supporting institutes

  • Institute of Physics and Technology, Kazakstan, Almaty

Project summary

The aim of the project is to investigate the efficiency of seismo-insulating construction system with KF and to elaborate a new construction technology for seismic regions.

Now a new way, seismic insulation, is being used in construction to increase seismic stability of buildings and constructions. Seismo-insulating constructions weaken the ties of buildings with the foundation, that change dynamic properties of the buildings and reduce earthquake affect. These constructions include: sliding belts (SB), rubber-metal legs (RML), etc. Widespread use of seismo-insulating systems is limited by manufacturing and mounting complexity or high cost of the constructions.

Kinematic foundations (KF) elaborated in Kazakh Research Institute for Seismic Construction also belong to seismo-insulating systems. They have been offered for mass usage.

Kinematic foundations have been investigated for many years and have been used in more than 100 experimental buildings. Earthquakes at Kamchatka, Kuril Islands, in Irkutsk and Almaty cities have tested the efficiency of the kinematic foundations in natural conditions.

This is simple, cheap and reliable solution of the problem for seismic insulation. Kinematic foundations keep their initial properties and 10-20 times cheaper than RML that have to be replaced due to rubber degeneration.

It is clear that costly seismo-insulating systems will not be widely used in such countries as China, Russia, Kazakhstan etc. despite their high efficiency.

Kinematic foundations are not widely used in the world practice mainly due to the following reasons:


· Lack of information on the results of their investigations and on their constructive design;
· Experimental methods do not meet the modern level of technology (testing means and gauges) of scientific centres in developed countries.

Therefore, new investigations with participation of collaborators from USA and usage of up-to date testing means will justify the earlier obtained results in the sphere of feasible application of the offered findings.

The volume of the investigation includes elaboration of compact computerized measuring complex for dynamic analysis of experimental objects in conditions of a construction site. Elaboration and adjustment of the measuring complex will be carried out by weapon experts.


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