Yanal Yüklere Maruz Kalan Kolonların SAP2000 ile Monotonik ve Histeretik Analizi

Yıl 2020, Cilt: 36 Sayı: 3, 350 - 363, 31.12.2020

Sila Avğın , Metin Kose

Öz

Birçok ülkede betonarme binaların çoğunluğu güncel sismik kodlara göre tasarlanmamıştır. Bu binalar genellikle güçlü zemin hareketleri sırasında hasara ve çökmeye karşı hassastır. Tipik olarak, bu tür binalardaki kolonlar yetersiz ve geniş aralıklı enine donatıya sahip olup gerekli sismik donatı detaylarından yoksundur. Bu binaların deprem hasarı değerlendirilirken gözlemlenen davranışın mukavemet ve deformasyon kapasitesi açısından değerlendirilmesini gerektirmektedir. Bir kolondaki yanal deformasyonlar eğilme, donatı sıyrılması ve kesme deformasyonları olmak üzere üç bölümden oluşmaktadır. Bu deformasyonların her biri için SAP2000 programıyla monotonik ve histeretik tepkileri ayrı modellenmiştir. Öncelikle kolon monotonik modeldeki eğilme, donatı sıyrılması ve kesme deformasyonları için plastik mafsal modeli ile, daha sonra histeretik modelde ise monotonik modelden elde edilen sonuçlar SAP2000 histeretik pivot modelinde kullanılarak modellenmiştir. SAP2000 modellerinden elde edilen sonuçlar, deneysel verilerle karşılaştırıldığında, kullanılan modellerin, betonarme kolonların yanal yüklere tepkisini tahmin etmede iyi bir performans sergilediği gösterilmiştir. Bu sonuçlara göre, daha komplex analiz metodları ile çözülen monotonik ve histeretik kolon yanal deformasyon modellerinin SAP2000 programıyla daha basit halde çözülebildiği gösterilmiştir.

Anahtar Kelimeler

Zayıf kolon, Eğilme deformasyonu, Kesme deformasyonu, Donatı sıyrılması, SAP2000

Kaynakça

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