Betonun Kırılma Mekaniğinde Çentikli Küp Yarma Numunelerinin Uygulama Potansiyeli
Betonun Kırılma Mekaniğinde Çentikli Küp Yarma Numunelerinin Uygulama Potansiyeli
Dosyalar
Tarih
2013
Yazarlar
İnce, Ragıp
Alyamaç, Kürşat Esat
Süreli Yayın başlığı
Süreli Yayın ISSN
Cilt Başlığı
Yayınevi
Teorik ve Uygulamalı Mekanik Türk Milli Komitesi
Theoretical and Applied Mechanical Turkish National Committee
Theoretical and Applied Mechanical Turkish National Committee
Özet
Beton bir yapıyı kırılma mekaniğine göre analiz edebilmek için ilk önce kullanılan malzemenin kırılma parametrelerinin belirlenmesi gerekir. Betonun kırılma parametrelerini belirlemek için şartnameler ve araştırmacılar tarafından birçok lineer olmayan kırılma mekaniği modelleri önerilmektedir. Bu modeller kohezif ve eşdeğer elastik çatlak yaklaşımları olarak sınıflandırılmaktadır. Betonun kırılma mekaniğinde kiriş numuneler yaygın olarak kullanılmakla birlikte küp ve silindir numunelerin taşınabilirlik ve hafiflik açısından bazı avantajlara sahiptir. Bu çalışmada küp yarma deneyi kullanılarak eşdeğer elastik çatlak yaklaşımlarına göre (İki Parametreli Model ve Boyut Etkisi Modeli) betonun kırılma parametrelerinin nasıl tayin edileceği ve uygulama potansiyeli deneysel olarak tartışılmıştır.
To analyze a concrete structure according to fracture mechanics, its fracture parameters are needed to be determined at first. Many non-linear fracture models have been proposed by design codes and investigators to determine fracture parameters of concrete. These models can be classified as the cohesive crack models and the effective crack models. Although the notched beam specimens have been commonly used in concrete fracture, there have been some the advantages of the cubical/cylindrical specimens such as compactness and lightness. The notched splitting-cube specimens have only been investigated for the cohesive crack models, while the splitting-cylinder specimens have commonly been studied for the fracture approaches based on both the effective crack and the cohesive crack. In this study, the splitting-cube specimens were analyzed for fracture models based on the effective crack. To investigate how well the split-cube tests would simulate the fracture behavior of concrete, one series experimental study on cubical and beam specimens was performed. The test results were analyzed according to two most popular elastic crack models: two-parameter model and size effect model. The results of the split-cube tests look viable and very promising.
To analyze a concrete structure according to fracture mechanics, its fracture parameters are needed to be determined at first. Many non-linear fracture models have been proposed by design codes and investigators to determine fracture parameters of concrete. These models can be classified as the cohesive crack models and the effective crack models. Although the notched beam specimens have been commonly used in concrete fracture, there have been some the advantages of the cubical/cylindrical specimens such as compactness and lightness. The notched splitting-cube specimens have only been investigated for the cohesive crack models, while the splitting-cylinder specimens have commonly been studied for the fracture approaches based on both the effective crack and the cohesive crack. In this study, the splitting-cube specimens were analyzed for fracture models based on the effective crack. To investigate how well the split-cube tests would simulate the fracture behavior of concrete, one series experimental study on cubical and beam specimens was performed. The test results were analyzed according to two most popular elastic crack models: two-parameter model and size effect model. The results of the split-cube tests look viable and very promising.
Açıklama
Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013
Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013
Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013