ANKARA’DAKİ GELENEKSEL AHŞAP KONUTLARIN SES İLETİM ÖZELLİKLERİNİN DEĞERLENDİRİLMESİ
Tez Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mimarlık Fakültesi, Mimarlık Bölümü, Türkiye
Tez Danışmanı: Ayşe Tavukçuoğlu
Tezin Onay Tarihi: 2015
Tezin Dili: İngilizce
Desteklendiği Program: Öğretim Üyesi Yetiştirme Programı (ÖYP)
Özet:
Sound transmission characteristics of traditional timber
dwellings in Turkey have become a serious issue due to the increase in
complaints of residents about noise problems in those structures. There is a
necessity to examine sound
transmission problems in these dwellings with an emphasis on configuration of their
timber frame components. Such a study is needed to suggest proper repair solutions to
eliminate the existing sound transmission problems while keeping authentic
features of those traditional structures.
Three traditional timber framed dwellings in Ankara, original one and
repaired ones, were examined in terms of impact and airborne sound transmission
characteristics of their floor and wall components by in-situ measurements and
simulation analyses. Sound absorption and transmission loss characteristics of
laboratory mudbrick samples were determined by using the impedance tube. Some supportive
laboratory tests were conducted to characterize material properties of the
original mudbrick samples collected from traditional houses.
The sound
insulation performances of timber framed wall and floor components under examination, both repaired and
non-repaired ones, were below the acceptable values. The presence of
door/window openings, air leakages and poor detailing such as direct fixing of any
cladding layers to the structural elements, are the main reasons that reduce
the overall sound insulation performance of the original wall and floor
components. Presence of voids for the running of
pipework or door/ window openings existed in the composition of timber framed wall and floor
components was found to reduce their sound insulation performances in the range
of 12-22dB. Air/sound leakages through the openings should be sealed properly
and the openings need to be replaced with the solid/insulated door or insulated window components in order to provide the required Rw and Lnw values for dwellings. In
case that the dwelling units/spaces are used as exhibition, meeting, office or
hotel rooms, some acoustical improvements in existing wall and floor components
can be provided by demountable attachments with sound insulation infill and
sound breaks. The 50mm-thick and 100mm-thick
mudbrick samples were determined to have STC values of
28dB±2 dB and 35dB±2 dB, respectively. The sound absorption coefficient at mid
frequencies and NRC of one representative mudbrick sample were determined to be
0.31 and 0.23, respectively. The performance of several wall/floor
configurations suggested in the study was summarized to be guiding particularly
for the improvement of airborne and impact sound insulation of
traditional timber frame wall and floor sections and
their repairs.