View Betonarme I – Ders from CHEMENG CHE at Ege Üniversitesi. Image of page 1. Betonarme 1 Ders Notları Serdar Kırçıl Limit durumlara göre hesap (Limit state design) KAPAS ² TE AZALTMA KATSAYILARI (Strength. YARARLANILABİLECEK KAYNAKLAR 1) Uğur Ersoy “Betonarme” (Cilt1, Cilt2) 2 ) Altay Gündüz “Betonarme Taşıma Gücü İlkesine Göre.
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Betonarme 1 Ders2 Ing – [PDF Document]
Home Documents Betonarme 1 Ders2 Ing. Post on Dec 12 views. Murat Serdar KrlNM www. Both steel and concrete are assumed to be linear elastic and Hooke Law is valid.
BETONARME – 1
This assumption may be valid for service loads iletme ykleri However; its not valid anymore in case of failure. For instance, underthe effect of a strong ground noylar, the assumption of materiallinearity is not valid. Thats why, stresses can not becalculated with reasonable accuracy. The little tensile strength of concrete is neglected. However, 11 the design of some structures like water tanks, tensile stress is limited for leak proofing.
Murat Serdar KrlThis assumption is valid for service loads. In case of failure it doesn’t represent the real behavior of the RC sections.
Murat Serdar KrlIts not a realistic assumption since concrete has not a constant elastic modulus. Murat Serdar KrlLimit state design Limit durumlara gre hesap Limit state defines a particular state of a structure which may becollapse or loss of function, either partial or total.
Structures mustbe designed so that the probability notkar reaching a limit state is lowerthan prescribed level. For instance, a slab which doesnt collapse but vibrates. The first stage of design making design of a cross-section for theultimate limit state and the following step is checking the serviceabilityrequirements deformations and cracks.
Deds 1 Ders NotlarYrd. Concrete does not take any tension, all tensile stresses are taken by reinforcement.
Bernouilli-Navier hypothesis is valid. Concrete – curve is the curve obtained from uniaxialcompression. Reinforcement steel is elastoplastic.
Load and material factors arecalled partial safety factors. Limit state design Limit durumlara gre hesap Fundamental principles and methods for design of reinforced concrete structuresMain assumptions of this methodBetonarme 1 Ders NotlarYrd.
Murat Serdar KrlProbability of reaching or exceeding a betonqrme state of structural system elements is restricted in limit state design.
What is the probability of reaching a limit state? Murat Serdar KrlWhy do we need a probabilistic approach? Load and strength are probabilistic variables.
Probability of reaching or exceeding a limit state of structural system elements betpnarme restricted in limit state design. Limit state design Limit durumlara gre hesap Fundamental principles and methods for design of reinforced concrete structuresBetonarme 1 Ders NotlarYrd.
Murat Serdar KrlWe need to know probability distribution of load and strength aswe can determine the safety of structures by using a probabilisticapproach. The probability distribution of them is usuallyassumed as normal gauss distribution.
Betonarme 1 Ders2 Ing
Why do we need a probabilistic approach? Murat Serdar KrlThe probability of collapse is assumed to reduce to predetermined value by increasing characteristic loads with load factors f anddecreasing the characteristic strength with material factors m.
Characteristic compressive strength of concrete Betonun karakteristik basn dayanm fctk: Characteristic tensile strength of concrete Betonun karakteristik ekme dayanm fyk: Characteristic yield strength of reinforcement steel eliin karakteristik akma dayanm fcd: Design compressive strength of concrete betonun hesap basn dayanm fctd: Design tensile strength of concrete Betonun hesap ekme dayanm fyd: Design yield strength of reinforcement steel eliin hesap akma dayanm Limit state design Limit durumlara gre hesap Betonarme 1 Ders NotlarYrd.
Live load Hareketli yk T: Wind load Rzgar yk In case of earthquakeE0.
Deprem yk Earthquake Load In case of lateral earth pressureH6.