نتایج جستجو برای: مشارکت آرماتور frp

تعداد نتایج: 23767  

2003
Antonio Nanni

21 Abstract 22 23 This paper reports on the North American state-of-the-art in the use of FRP composites in concrete structures. For new 24 construction, FRP bars have been used as the internal reinforcement in concrete members to replace conventional steel rebars for 25 a host of reasons. The principles for design and construction have been established and proposed to industry by the American ...

2005
A. Nanni Maralee Jones

This paper reports on the key features of the “Guide for the Design and Construction of Concrete Reinforced with FRP Bars” issued by the American Concrete Institute (ACI). For new construction, FRP bars have been used as the internal reinforcement in concrete members to replace conventional steel rebars for a host of reasons. The principles for design and construction were first established and...

2006
R S Trask

The use of functional repair components stored inside hollow reinforcing fibres is being considered as a self-repair system for future composite structures. The incorporation of a self-healing capability within a variety of materials, including fibre reinforced polymers (FRPs), has been investigated by a number of workers previously. This paper considers the placement of self-healing plies with...

Journal: :Circulation research 1967
A Anselmi O Gurdiel J A Suarez G Anselmi

Atrioventricular (A-V) conduction and the functional refractory period (FRP) of the A-V system were studied in 13 dogs chronically infected by T. cruzi that had ECG disturbances indicative of myocarditis. Histopathologic findings at the A-V node and the bundle of His were correlated with the FRP and with conduction times of the A-V propagation system. Retarded conduction was related to inflamma...

2012
Emidio NIGRO Giuseppe CEFARELLI Antonio BILOTTA

Several building codes are available for the design of concrete structures reinforced with FRP; nevertheless knowledge on their structural behavior in case of fire is lack and no reliable design method is available. The experimental data available in the literature about the behavior of fiber-reinforced composite materials as well as of concrete slabs reinforced with FRP bars or grids at high t...

2016
Boyan I. Mihaylov

Tests of deep concrete beams with internal fiber-reinforced polymer (FRP) reinforcement have shown that such members can exhibit lower shear strength than members with conventional steel reinforcement. To model this effect, the current paper proposes an approach based on a two-parameter kinematic theory (2PKT) for conventional deep beams. The 2PKT is built on a kinematic model with two degrees ...

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

پلیمر های تقویت شده به وسیله الیاف frp3 به عنوان یک جایگزین برای روش های مقاوم سازی قدیمی مانند چسباندن صفحات فولادی , افزایش سطح مقطع و پیش تنیدگی خارجی برای سازه های بتنی پدیدار شده است . با اتصال کامپوزیت به زیر و وجوه تیرهای بتنی و ستون های بتن آرمه، ضمن افزایش مقاومت خمشی، برشی و فشاری عضو بتن آرمه و استحکام بیش از پیش آن ها، مشکلات ناشی از آسیب های قبلی نیز جبران می شود. اما جدا شدگی سریع...

2011
Edward Amsden

Functional Reactive Programming (FRP) provides a conceptual framework for implementing reactive systems. It is a relatively recent model of programming, but has already been explored, implemented, and optimized in several useful ways. We survey the literature on FRP, its implementation, optimization, and uses, and present ideas for further research, along with some examples.

2008
Ioannis G. Raftoyiannis

Passively damped bracing systems in steel frames, in which the conventional materials of the joint are replaced by high damping viscoelastic materials, have the potential of being effective practical means for passive vibration control of dynamically loaded civil engineering structures. However, this potential can be realized only if the associated structural penalties are reduced within accept...

ژورنال: تحقیقات بتن 2018

ساختمان های بتن آرمه، بخش عمده بناهای در حال ساخت را در کشور ایران به خود اختصاص می دهند. در ساختمان های بتن آرمه وصله آرماتور ها، یک امر اجتناب ناپذیر است. وصله پوششی رایج ترین نوع وصله میلگردها است که از مهم ترین معایب آن اتلاف در مصرف میلگرد می باشد. یکی از راهکارهای مصرف بهینه آرماتور در ساختمان های بتن آرمه، استفاده از وصله مکانیکی به جای وصله پوششی است.با توجه به وجود مشکلات عدیده‌ی اجرای...

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