Çubuk Ağı Ahşap Kubbeler

Yıl 2019, Cilt: 3 Sayı: 1, 9 - 21, 30.07.2019

Burcu Demirbaş , Z. Canan Girgin

Öz

Öz

Geniş açıklıklı yapı ihtiyacına yönelik tasarım anlayışının, 20. yy’ın başlarından itibaren kendini gösterdiği

söylenebilir. Bu anlayışta, malzeme, biçim ve taşıyıcı sistem bir bütün halinde değerlendirilir ve tasarıma katılır.

20.yy’ın ikinci yarısından itibaren gelişen lamine ahşap kompozit eleman (glulam) üretim teknolojileri, geniş

açıklıklı ahşap yapı tasarımını mümkün kılmıştır. Bu çalışmada çubuk ağı kabuk sistemler genelinde; önemli

bir uygulama alanı bulan tek tabakalı ahşap kubbeler incelenmektedir. Malzeme, form ve taşıyıcı sistemin

verimliliği, bilinen en geniş açıklıklı ahşap kubbe örnekleri üzerinden karşılaştırmalı olarak irdelenmektedir.

Kubbe maliyetine etki eden parametrelerden biri taşıyıcı sistemin tipi ve basıklığıdır, jeodezik sistem ekonomikliği

ile tercih edilmektedir. Birleşimlerin teşkil biçimi ve yükleri taşıma kapasitesinin yanısıra; kubbe yüklerinin

zemine aktarılma biçimi de önemlidir. İncelenen örneklerden, yüklerin payandadan çekme çemberine aktarım

biçiminin en uygun çözüm olduğu görülmektedir.

Anahtar Kelimeler

Lamine ahşap kiriş, Geniş açıklık, Çubuk ağı kubbe, Ahşap, Düğüm noktası

Reticulated Timber Domes

Öz

Abstract

It can be said that the concept of design for the needs of the wide span structure has emerged from the

beginning of the 20th century. In this approach, the material, form and structural system are evaluated as

a whole and are included in the design. Since the second half of the 20th century, the production of glue

laminated members (glulam) has made possible to design wide span wooden structures. In this study, singlelayer

reticulated wooden domes which have an important position in application area are adressed. The

efficiency of the material, form and structural system is investigated on the well known largest-span timber

domes. One of the parameters affecting the cost of the dome is the type and aspect ratio of the structural

system, geodesic system is economically preferred. In addition to the load carrying capacity of nodes and

connections, transferring of the loads on domes to the ground is also important. The load transfer from

buttresses to the tension ring seems the most appropriate solution.

Anahtar Kelimeler

Glulam, Large-span, Reticulated dome, Wood, Node

Kaynakça

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