Papers by farnaz alinoori
Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2013Thesis (M.Sc.) ... more Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2013Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2013Yapı mühendisliği alanında, yapıların güçlendirilmesi senelerdir tam olarak çözülememiş bir sorun olmuştur. Güçlendirilecek her yapı genellikle farklı özellik gösterebilmektedir. Son depremlerde yapısal hasarlar belirgin şekilde ortaya çıkmış olup geçmişte inşa edilmiş yapıların sismik kuvvetlere dayanacak şekilde projelendirilmesi ve inşası esastır. Yapı hasarlarını azaltmak, ancak dikkatli tasarım yoluyla, ya da hasar görmüş yapılardan dersler alınması ile elde edilebilir. Yapıların depremlerde hasar görmesinin önlemesi amacıyla, yapılarda güvenli tarafta kalacak şekilde kurallar konulmaktadır. Bu bilgiler, yapı onarımı veya yapının inşasında kullanılabilir. Mevcut binanın deprem kapasitesinin artırılması ve göçmesinin önlenmesi esastır. Bu sebeple ele alınan binanın onarım ve güçlendirilmesi çok önemli dır. Bu ...
The earthquake performance of a school building having three stories which has been retrofitted a... more The earthquake performance of a school building having three stories which has been retrofitted afterwards by two approaches, are investigated herein this study. The school building that constructed in 1970, in city of Zanjan (Iran), is studied to investigate earthquake performance. The building has six and three spans at x and y directions, respectively. The story heights from first to third floors are 4.00m, 3.75m and 3.75m, respectively. The structural system of the building consists of reinforced concrete frames. The material tests are carried out by using destructive and nondestructive testing techniques on the columns. Compressive strength of concrete is evaluated by means of statistical procedures which yield the lower and the upper concrete strength is obtained to be 20.0MPa and 28.3MPa. Numerical analysis of the building is carried out by adopting a three dimensional modeling in SAP2000 software, under vertical and lateral loads according to Iranian Earthquake Resistant Des...
Computational simulation of light timber framing connections strengthened with self-tapping screws
Journal of Building Engineering, 2021
Abstract Traditional light timber framing systems, comprised of stud to top and bottom plate conn... more Abstract Traditional light timber framing systems, comprised of stud to top and bottom plate connections, suffer from relatively low stiffness along compression perpendicular-to-grain of the plates, leading to excessive shortening of studs in mid-rise buildings. Experimental testing of timber stud to plate connections revealed that a reinforcement technique employing self-tapping screws, placed at the top/bottom plate interface, was an efficient way to enhance the connection stiffness and alleviate permanent displacements. In other words, the combination of bonding stress development at the interface of self-tapping screws and timber stud as well as plastic deformation , built up in timber plate in compression perpendicular-to-grain, plays an important role in improving the bearing stiffness/strength of these connections. In this paper, structural performance of light timber framing connections, strengthened with self-tapping screws under gravity loading is investigated, utilising finite element modelling . Continuum damage mechanics framework along with traction-separation cohesive zone technique are incorporated in detecting various failure scenarios and damage propagation for timber components in the finite element modelling. Small-scale unreinforced and reinforced stud to top/bottom plate connections using the Machine Graded Pine timber and high strength self-tapping screws were employed and tested experimentally to calibrate the finite element modelling parameters. Calibrated parameters are then utilised to establish a full-scale light timber framing finite element model. It is demonstrated that finite element models established in this paper can predict the load-displacement response and failure modes of reinforced light timber framing systems.
Construction and Building Materials, 2020
h i g h l i g h t s Finding solution for the enhancement of the relatively low load-bearing capac... more h i g h l i g h t s Finding solution for the enhancement of the relatively low load-bearing capacity of timber plates in light timber framed structures under compression perpendicular to grain. The techniques include applying timber on timber and steel on timber connections, use of additional reinforcing materials and mechanical fasteners. The results indicate that the bearing capacity under compression perpendicular to grain can be considerably improved by applying self-tapping screws and reduced the overall shortening of timber framed structures, comparing other reinforcement methods.
Construction and Building Materials, 2020
h i g h l i g h t s Enhancement of load-bearing capacity of timber plates under compression perpe... more h i g h l i g h t s Enhancement of load-bearing capacity of timber plates under compression perpendicular to grain. Study of different timber species as plates, and their effects on the load carrying capacity. A comparison between the effects of different techniques applied to different timber species. Selecting the best solutions providing maximum load bearing capacity and minimum shortening.
Betonarme Bir Binanın Farklı Yöntemler İle Onarım Ve Güçlendirilmesi
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Papers by farnaz alinoori