نتایج جستجو برای: مقاطع frp

تعداد نتایج: 9734  

2010
Daniele Veneziano Simon Laflamme

Fiber Reinforced Polymer (FRP) systems have gained much popularity as a method for reinforcing existing concrete structures. However a variety of sudden failure methods, such as debonding, delamination, and creep rupture have led to the development of code limitations on the strength that an FRP system can be considered to provide. The uncertainty brought on by the failure methods mentioned abo...

2006
Oral Büyüköztürk Tzu-Yang Yu

Failures in FRP-strengthened reinforced concrete (RC) members may occur by flexural failures of critical sections or by debonding of FRP plate from the RC beams. Debonding in the FRP/adhesive/concrete interface region may cause a significant decrease in member capacity leading to a premature failure of the system. There is a need for improved knowledge of the debonding processes under mechanica...

2012
I. A. Bukhari

The current paper reviews existing design guidelines for strengthening beams in shear with carbon fibre reinforced polymer (CFRP) sheets and proposes a modification to Concrete Society Technical Report TR55. It goes on to present the results of an experimental programme which evaluated the contribution of CFRP sheets towards the shear strength of continuous reinforced concrete (RC) beams. A tot...

2012
R. Venkata Kiran Kumar V. Bala Krishna Murthy Suresh Kumar

In aerospace and many types of civil infrastructure applications, the use of adhesive-bonded composite joints have been constantly increasing. In this study, fracture behaviour of adhesively bonded single lap joint (SLJ) with pre-existing damage at the interface of free edge of the top adherend and adhesive along the width of the joint is studied by strain energy release rate (SERR) approach us...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
d. mostofinejad m. mohamadi anaei

concrete shear walls are the most prevalent structural systems resisting lateral loads due to earthquakes in high-rise buildings. very large in-plane stiffness of shear walls provides an excellent drift control in the structure. however, structural damages and early code shortcomings threaten the efficiency of existing structural walls against earthquake. recently, fiber reinforced polymer (frp...

A wide range of materials and scaffolding fabrication methods for bone tissue engineering have beenexplored recently. Fiber reinforced polymers (FRP) system appears to be a suitable system. By the exclusiveuse of biocompatible or bio-absorbable polymers and fibers, novel generation of scaffolds for applicationsin tissue engineering can be prepared. Mulberry Silk as highlighted...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده فنی 1393

با توجه به دانه بندی کوچکتر بتن خودتراکم نسبت به بتن معمولی که سطح شکستی ملایم تر را در این بتن ایجاد می کند، بررسی بیشتر مقاومت برشی بتن خودتراکم ضروری به نظر می رسد. از طرفی تقویت برشی تیرهای بتن آرمه با ورق های frp به عنوان جایگزین روش هایی مانند افزایش مقطع نیز نیازمند مطالعات بیشتری است. هدف از این تحقیق، تقویت برشی تیرهای بتن آرمه با بتن خودتراکم به وسیله ی ورق های frp و بررسی تأثیراند...

During recent years, the use of fiber-reinforced polymers (FRP) as a desirable alternative for improving the behavior of lateral resisting system are known. There are various factors influencing the quality of such kind of rehabilitation. This study aims to investigate the influence of geometric characteristics and arrangement of FRP layers on rehabilitating of concrete shear walls.  A few rein...

2003
S. H. Rizkalla

This paper highlights the philosophy and concepts used for of the design of prestressed concrete structures prestressed by fibre reinforced polymer (FRP) tendons and rods proposed for the Canadian Standards Association (CSA) S806-00 Standard "Design and Construction of Building Components with Fibre Reinforced Polymers". The paper deals with the section of the code which applies to concrete bea...

2017
Muhammad N. S Hadi M. N. S. Hadi

The majority of columns are subjected to a combination of an axial load and a bending moment in one or two directions. With a few exceptions, most of the research in the area of FRP wrapped columns have concentrated on the behaviour of concentrically loaded columns. This paper presents results of testing nine reinforced high strength concrete columns. The column specimens are circular in shape ...

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