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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Reinforcement steel is elastoplastic. 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. For instance, underthe effect of a strong ground motion, the assumption of materiallinearity is not valid.
Thats why, stresses can not becalculated with reasonable accuracy. Post on Dec 12 views. Characteristic compressive strength of concrete Betonun karakteristik basn dayanm fctk: 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. Murat Serdar KrlProbability of reaching or exceeding a limit state of structural system elements is restricted in limit state design.
Load and strength are probabilistic variables. Betonarme 1 Ders NotlarYrd. Design compressive strength of concrete betonun hesap basn dayanm fctd: Murat Serdar KrlWe need to know probability distribution of load and strength aswe can determine the safety of structures by using a probabilisticapproach. This assumption may be valid for service loads iletme ykleri However; its not valid anymore in case of failure.
Probability of reaching or exceeding a limit state of structural system elements is restricted in limit state design. Live load Hareketli yk T: Home Documents Betonarme 1 Ders2 Ing. The probability distribution of them is usuallyassumed as normal gauss distribution. 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 KrlWhy do we need a probabilistic approach? Structures mustbe designed so that the probability of reaching a limit state is lowerthan prescribed level. Characteristic tensile strength of concrete Vers karakteristik ekme dayanm fyk: In case of failure it doesn’t represent the real behavior of the RC sections.
Murat Serdar KrlThis assumption is valid for service loads.
BETONARME – 1
Why do we need a probabilistic approach? Concrete – curve is the curve obtained from uniaxialcompression. Both steel and concrete are assumed to be linear elastic and Hooke Law is valid.
Characteristic yield strength of reinforcement steel eliin karakteristik akma dayanm fcd: For instance, a slab which doesnt collapse but vibrates. Wind load Rzgar yk In case of earthquakeE0. Concrete does not take any tension, all tensile stresses are taken by reinforcement.
Design yield strength of reinforcement steel eliin hesap akma dayanm Limit state design Limit durumlara gre hesap Betonarme 1 Ders NotlarYrd.
Murat Serdar KrlThe probability of collapse is assumed to reduce to derx value by increasing characteristic loads with load factors f anddecreasing the characteristic strength with material factors m. What is the probability of reaching a limit state? The little tensile strength of concrete is neglected.
Deprem yk Earthquake Load In case of lateral earth pressureH6. Murat Serdar KrlNM www. Bernouilli-Navier hypothesis is valid.
BETONARME – 1 – Free Download PDF
Load and material factors arecalled partial safety factors. Limit state design Limit durumlara gre hesap Fundamental principles and methods for design of reinforced concrete structuresBetonarme 1 Ders NotlarYrd. Murat Serdar KrlIts not a realistic assumption since concrete has not a constant elastic modulus. Design tensile strength of concrete Betonun hesap ekme dayanm fyd: However, in the design of some structures like betlnarme tanks, tensile stress is limited for leak proofing.