CIVILICA We Respect the Science
(ناشر تخصصی کنفرانسهای کشور / شماره مجوز انتشارات از وزارت فرهنگ و ارشاد اسلامی: ۸۹۷۱)


شناسه (COI) مقاله: ICCD03_104
منتشر شده در سومین کنفرانس بین المللی بتن و توسعه در سال ۱۳۸۸
مشخصات نویسندگان مقاله:

H Khoshroo - Apply Research Office of NAJA
F Sinaeian - Building and Housing Research Centre (BHRC). I.R.Iran

خلاصه مقاله:
When an earthquake happens, different kinds of compression and shear waves are produced. Structures in direction of compression waves P (sense's weight of structure) have good enforcement and main loss of structures is in sense of shear (sense of propagation S waves). By reducing amplitude of seismic waves, we can reduce damages to the building. Nowadays, one of the most important difficulties in front of engineering structure is finding ways for reducing side movement of structure and vibrations caused by the device measuring earthquakes in buildings especially high structures for adding to their factor of safety. Seismic waves are among mechanic waves and for propagation need material environment and their reduction has opposite environment's density. So, reducing density of propagation environment is one of ways for reducing amplitude of waves. On the other side, liquids do not have a stiffness shear and cannot effect and propagation S waves. So, in this plan, we have tried using this specifications and installing sphere full of fluid in the sample environment of ordinary concrete, make new concrete and evaluate its behavior so that has considerable reduce against shear waves. For considering the made sample behavior and comparing it with ordinary concrete, cubic samples with sizes 10x20x20 and 10x20x60cm are made and were put under impulse loads. Comparing test results, it was observed that amplitude of registered wave on the concrete sample with fluid compare to sample of ordinary concrete has reduced on average %50. So, by using this damping concrete, we can reduce the seismic energy and acceleration effected to the structure and considering amount of this reduction, the structure weight is also reduced. Reduction of structure weight caused reduction of secondary seismic force.

کلمات کلیدی:
damper, shear wave, fluid

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