Technology
It has grown even
more critical for every construction company to work out better and inexpensive
construction method for more vibration-free and earthquake-resistant buildings
since the March 11 disaster in Tohoku. Taisei developed a technology to measure
precisely the noise and sound of footsteps going down to the lower level through
the floor of apartment. It calculates the vibration of the floor using a
computer and estimates the size of the noise. It can reproduce how the
vibration transmits through the floor with the help of computer graphic.
The company applied
the finite element analysis method to its technology. In the test, it was
confirmed that the difference is less than 5 dB between the actual measurement
and the calculated value for the noise about 50 dB, though the existing
technology produces a difference of more than 10 dB. It can be applied to the evaluation
of high-rise buildings from the design stage to decrease vibrations with a lower
construction cost. Taisei has already started to use this technology for the
apartment buildings it is constructing.
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