Shear Capacity Of Beams Of Reinforced High Performance Concrete
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Shear Capacity Of Beams Of Reinforced High Performance Concrete
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Author : Henrik Gabrielsson
language : en
Publisher:
Release Date : 1993
Shear Capacity Of Beams Of Reinforced High Performance Concrete written by Henrik Gabrielsson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Studies On Shear Strength Of High Performance Concrete Beams
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Author : P. Y. L. Kong
language : en
Publisher:
Release Date : 1997
Studies On Shear Strength Of High Performance Concrete Beams written by P. Y. L. Kong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Bars (Engineering) categories.
Shear Performance Of Heavily Reinforced High Strength Concrete Coupling Beams
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Author : Andrew Walter Fisher
language : en
Publisher:
Release Date : 2016
Shear Performance Of Heavily Reinforced High Strength Concrete Coupling Beams written by Andrew Walter Fisher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
High Strength Concrete
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Author :
language : en
Publisher:
Release Date : 1987
High Strength Concrete written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with High strength concrete categories.
Response Of Ultra High Performance Fiber Reinforced Concrete Beams Under Flexure And Shear
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Author : Roya Solhmirzaei
language : en
Publisher:
Release Date : 2021
Response Of Ultra High Performance Fiber Reinforced Concrete Beams Under Flexure And Shear written by Roya Solhmirzaei and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Electronic dissertations categories.
Ultra high performance concrete (UHPC) is an advanced cementitious material made with low water to binder ratio and high fineness admixtures, and possesses a unique combination of superior strength, durability, corrosion resistance, and impact resistance. However, increased strength of UHPC results in a brittle behavior. To overcome this brittle behavior of UHPC and improve post cracking response of UHPC, steel fibers are often added to UHPC and this concrete type is designated as Ultra High Performance Fiber Reinforced Concrete (UHPFRC). Being a relatively new construction material, there are limited guidelines and specifications in standards and codes for the design of structural members fabricated using UHPFRC. To develop a deeper understanding on the behavior of UHPFRC flexural members, seven beams made of UHPFRC are tested under different loading conditions. The test variables include level of longitudinal reinforcement, type of loading (shear and flexure), and presence of shear reinforcement. Further, a finite element based numerical model for tracing structural behavior of UHPFRC beams is developed in ABAQUS. The developed model can account for the nonlinear material response of UHPFRC and steel reinforcement in both tension and compression, as well as bond between concrete and reinforcing steel, and can trace the detailed response of the beams in the entire range of loading. This model is validated by comparing predicted response parameters including load-deflection, load-strain, and crack propagation against experimental data obtained from tests on UHPFRC beams with different material characteristics and under different loading configurations. The validated model is applied to conduct a set of parametric studies to quantify the effect of different parameters on structural response of UHPFRC beams, including the contribution of stirrups and concrete to shear capacity of beams, to explore feasibility of removing the need for shear reinforcement in UHPFRC beams. Results from experiments and numerical model reveal that UHPFRC beams exhibit distinct cracking pattern characterized by the propagation of multiple micro cracks followed by widening of a single crack leading to failure. Also, UHPFRC beams exhibit high flexural and shear capacity, as well as ductility due to high compressive and tensile strength of UHPFRC and fiber bridging developing at the crack surfaces that leads to strain hardening in UHPFRC after cracking. Thus, absence of shear reinforcement in UHPFRC beams does not result in brittle failure, even under dominant shear loading. Data from the conducted experiments as well as those reported in literature is utilized to develop a machine learning (ML) framework for predicting structural response of UHPFRC beams. On this basis, a comprehensive database on reported tests on UHPFRC beams with different geometric, fiber properties, loading and material characteristics is collected. This database is then analyzed utilizing different ML algorithms, including support vector machine, artificial neural networks, k-nearest neighbor, support vector machine regression, and genetic programing, to develop a data-driven computational framework for predicting failure mode and flexural and shear capacity of UHPFRC beams. Predictions obtained from the proposed framework are compared against the values obtained from design equations in codes, and also results from full-scale tests to demonstrate the reliability of the proposed approach. The results clearly indicate that the proposed ML framework can effectively predict failure mode and flexural and shear capacity of UHPFRC beams with varying reinforcement detailing and configurations. The research presented in this dissertation contributes to the development of preliminary guidance on evaluating capacity of UHPFRC beams under different configurations.
Evaluation Of Shear Strength Of High Strength Concrete Beams
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Author : Attaullah Shah
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012-08-01
Evaluation Of Shear Strength Of High Strength Concrete Beams written by Attaullah Shah and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-01 with categories.
The book is recommended for the research graduate students perusing their research in the fields of high performance and high strength concrete with special reference to shear properties. The findings of the research can also be used by the graduate students interested in the in-depth analysis of Building Codes provisions of High Strength and High Performance Concrete. The book is recommended for use of the students interested to study the behavior of High Strength Concrete beams as well. The book involves analytical study of the high strength concrete beams on the basis of various parameters such as longitudinal steel ratio, shear span to depth ratio, web reinforcement etc. The contribution of web steel to the shear capacity of the beams has also been analyzed. 70 beams have been tested to verify these parameters. The results of the shear capacity of the high strength concrete beams have been compared with the provisions of the various building and bridges codes, most commonly practiced by the designers and engineers of concrete structures. The study of disturbed region in concrete structures provides the basic knowledge for the detailed research by the interested students....
Ultra High Performance Concrete Uhpc
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Author : Ekkehard Fehling
language : en
Publisher: John Wiley & Sons
Release Date : 2015-04-20
Ultra High Performance Concrete Uhpc written by Ekkehard Fehling and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-04-20 with Technology & Engineering categories.
Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since. Ultra high performance concrete (UHPC) is a milestone in concrete technology and application. It permits the construction of both more slender and more durable concrete structures with a prolonged service life and thus improved sustainability. This book is a comprehensive overview of UHPC - from the principles behind its production and its mechanical properties to design and detailing aspects. The focus is on the material behaviour of steel fibre-reinforced UHPC. Numerical modelling and detailing of the connections with reinforced concrete elements are featured as well. Numerous examples worldwide - bridges, columns, facades and roofs - are the basis for additional explanations about the benefits of UHPC and how it helps to realise several architectural requirements. The authors are extensively involved in the testing, design, construction and monitoring of UHPC structures. What they provide here is therefore a unique synopsis of the state of the art with a view to practical applications.
Seventh International Symposium On Utilization Of High Strength High Performance Concrete
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Author : H. G. Russell
language : en
Publisher:
Release Date : 2005
Seventh International Symposium On Utilization Of High Strength High Performance Concrete written by H. G. Russell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Concrete construction categories.
Flexural And Shear Capacity Of Reinforced High Strength Concrete Beams Without Stirrups
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Author : Mikael Hallgren
language : en
Publisher:
Release Date : 1994
Flexural And Shear Capacity Of Reinforced High Strength Concrete Beams Without Stirrups written by Mikael Hallgren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Design Of Concrete Structures Using High Strength Steel Reinforcement
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Author : Bahram M. Shahrooz
language : en
Publisher: Transportation Research Board
Release Date : 2011
Design Of Concrete Structures Using High Strength Steel Reinforcement written by Bahram M. Shahrooz and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
TRB's National Cooperative Highway Research Program (NCHRP) Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement evaluates the existing American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications relevant to the use of high-strength reinforcing steel and other grades of reinforcing steel having no discernible yield plateau. The report also includes recommended language to the AASHTO LRFD Bridge Design Specifications that will permit the use of high-strength reinforcing steel with specified yield strengths not greater than 100 ksi. The Appendixes to NCHRP Report 679 were published online.