Author: Benayoune Abdelghani Publisher: ISBN: Category : Concrete Languages : en Pages : 690
Book Description
Precast Concrete Sandwich Panels (PCSP) that act as load bearing elements are structurally and thermally efficient building element with potential for use as an Industrialised Building System (IBS). The study aims to investigate all issues related to structural performance of PCSP. The strength characteristics of PCSP under imposed loads with both wythes being structural wythes were established and the condition for achieving composite behaviour was examined. Although it is possible to use any conventional flooring system with the use of PCSP as walling elements, the structural behaviour of PCSP under lateral load was also studied so that PCSP can be adopted as flooring elements. This helps to reduce the number of different types of elements necessary in a building. A study on typical connections between PCSP elements was also undertaken. Under axial and eccentric loads, an experimental program consisting of twelve specimens with different heights was carried out. The theoretical investigation consists of two theoretical formulations namely, classical expression and Finite Element Method (FEM). Comparison between non-linear FEM proposed models and experimental data was made in order to validate the models. An FEM parametric study was carried out by varying two important parameters i.e. the effect of slenderness (height-to-thickness ratio, H/t) and the stiffness of the shear connectors as measured by the bar diameter. The ultimate strength of the PCSP was found comparable to the strength expected for full composite panels. It achieved a high composite behaviour at service and acted in partially composite manner at ultimate stage. A study on the effect of opening in the form of doors and windows in the sandwich panels was also undertaken. It was found that the ultimate load of the PCSP decreases with increase in slenderness ratio (H/t). Simplified design formulae to determine the ultimate strength of PCSP under axial and eccentric loads were proposed to closely match the strength values. The FEM investigation was extended to explore the feasibility of usage of PCSP as slab. Two non-linear FEM models (2-D and 3-D models) were used to simulate the behaviour of PCSP as one-way and two-way acting slabs respectively. The non-linear FEM models were validated by experimental data. Parameters such as shear connector numbers and applied loading influencing the ultimate strength and the compositeness of the PCSP working as slab were investigated. A method for the determination of the interface shear force and the design of shear connectors was proposed. The results as obtained experimentally indicated that the classical elastic theory assuming fully composite action and non-linear FEM models were reasonably accurate in predicting ultimate loads and lateral deflections. The behaviour of typical vertical connections between two precast concrete sandwich panels under shear and bending using FEM was carried out. FEM results were found to be in good correlation with experimental values. Ultimate strength, ductility of the connection, strain in anchor steel bars, strains variations across the critical zone together with cracking patterns and mode of failure were studied. The proposed FEM model predicted with an acceptable accuracy the general behaviour of the connections under moment and shear forces. On the basis of this investigation, connection reinforcement details were recommended.
Author: fib Fédération internationale du béton Publisher: FIB - Féd. Int. du Béton ISBN: 2883941246 Category : Technology & Engineering Languages : en Pages : 146
Book Description
During the mid-20th century, with the rise of industrial prefabrication, precast concrete sandwich panels started being used as cladding for buildings. Since then, society and construction industry have become increasingly aware of energy efficiency in all fields, including affordability and sustainability consciousness, while maintaining the buildings’ durability. As such, buildings have been subject to increasingly stringent requirements which has kept the technology of sandwich panels continually at the forefront of building envelope evolution. Nowadays, sandwich panels have reached the highest standards of functional performance and aesthetic appeal. In building construction, these sandwich panel attributes combine with the well-known advantages of prefabrication including structural efficiency, flexibility in use, speed of construction, quality consciousness, durability, and sustainability. Sandwich panels have gained more exposure, thus representing quite a significant application within the prefabrication industry and a vital component of the precast market. The fib Commission “Prefabrication” is eager to promote the development of all precast structural concrete products and to share the knowledge and experience gained, to aid with practical design and construction. By issuing this comprehensive overview, “Guide to Good Practice”, a better understanding of design considerations, structural analysis, building physics, use of materials, manufacturing methods, equipment usage and field performance will be provided. This document contains the latest information currently available worldwide. The Commission is particularly proud that this document is a result of close cooperation with PCI and that it is published by both the fib and PCI. This cooperation started six years ago, first with comparing the different approaches to several issues, then progressively integrating and producing common documents, like this one, that hasn’t yet been treated in a specific Guide by either body. This Guide is intended to be the reference document to all who are interested in utilising the advantages of Precast Sandwich wall panels. In conjunction with the previously published Planning and Design Handbook on Precast Building Structures, the designer will have significant resources to integrate sandwich wall panels into any applicable structure.
Author: Alfred Steinle Publisher: John Wiley & Sons ISBN: 3433032254 Category : Technology & Engineering Languages : en Pages : 378
Book Description
Building with precast concrete elements is one of the most innovative forms of construction. This book serves as an introduction to this topic, including examples, and thus supplies all the information necessary for conceptual and detailed design.
Author: FIB – Féd. Int. du Béton Publisher: FIB - Féd. Int. du Béton ISBN: 2883941181 Category : Technology & Engineering Languages : en Pages : 290
Book Description
This document has a broad scope and is not focussed on design issues. Precast construction under seismic conditions is treated as a whole. The main principles of seismic design of different structural systems, their behavior and their construction techniques are presented through rules, construction steps and sequences, procedures, and details that should lead to precast structures built in seismic areas complying with the fundamental performance requirements of collapse prevention and life safety in major earthquakes and limited damage in more frequent earthquakes. The content of this document is largely limited to conventional precast construction and, although some information is provided on the well-known “PRESSS technology” (jointed ductile dry connections), this latter solution is not treated in detail in this document. The general overview, contained in this document, of alternative structural systems and connection solutions available to achieve desired performance levels, intends to provide engineers, architects, clients, and end-users (in general) with a better appreciation of the wide range of applications that modern precast concrete technology can have in various types of construction from industrial to commercial as well as residential. Lastly, the emphasis on practical aspects, from conceptual design to connection detailing, aims to help engineers to move away from the habit of blindly following prescriptive codes in their design, but instead go back to basic principles, in order to achieve a more robust understanding, and thus control, of the seismic behaviour of the structural system as a whole, as well as of its components and individual connections.
Author: FIB - Féd. Int. du Béton Publisher: FIB - Féd. Int. du Béton ISBN: 2883941149 Category : Technology & Engineering Languages : en Pages : 325
Book Description
In 1994 fib Commission 6: Prefabrication edited a successful Planning and Design Handbook that ran to approximately 45,000 copies and was published in Spanish and German. Nearly 20 years later Bulletin 74 brings that first publication up to date. It offers a synthesis of the latest structural design knowledge about precast building structures against the background of 21st century technological innovations in materials, production and construction. With it, we hope to help architects and engineers achieve a full understanding of precast concrete building structures, the possibilities they offer and their specific design philosophy. It was principally written for non-seismic structures. The handbook contains eleven chapters, each dealing with a specific aspect of precast building structures. The first chapter of the handbook highlights best practice opportunities that will enable architects, design engineers and contractors to work together towards finding efficient solutions, which is something unique to precast concrete buildings. The second chapter offers basic design recommendations that take into account the possibilities, restrictions and advantages of precast concrete, along with its detailing, manufacture, transport, erection and serviceability stages. Chapter three describes the precast solutions for the most common types of buildings such as offices, sports stadiums, residential buildings, hotels, industrial warehouses and car parks. Different application possibilities are explored to teach us which types of precast units are commonly used in all those situations. Chapter four covers the basic design principles and systems related to stability. Precast concrete structures should be designed according to a specific stability concept, unlike cast in-situ structures. Chapter five discusses structural connections. Chapters six to nine address the four most commonly used systems or subsystems of precast concrete in buildings, namely, portal and skeletal structures, wall-frame structures, floor and roof structures and architectural concrete facades. In chapter ten the design and detailing of a number of specific construction details in precast elements are discussed, for example, supports, corbels, openings and cutouts in the units, special features related to the detailing of the reinforcement, and so forth. Chapter eleven gives guidelines for the fire design of precast concrete structures. The handbook concludes with a list of references to good literature on precast concrete construction.
Author: FIB – International Federation for Structural Concrete Publisher: FIB - International Federation for Structural Concrete ISBN: 0727713752 Category : Technology & Engineering Languages : en Pages : 36
Book Description
These recommendations, together with a detailed commentary, are the result of nine years' intensive research. They provide the engineer and precaster with a guide to sound design and put at their disposal calculation methods and examples of good practice for the many details of the design of hollow core floors.
Author: Benayoune Abdelghani
Author: fib Fédération internationale du béton
Author: Siaw Chin Pang
Author: Alfred Steinle
Author: Jack Edward Binning
Author: 
Author: Portland Cement Association
Author: FIB – Féd. Int. du Béton
Author: FIB - Féd. Int. du Béton
Author: FIB – International Federation for Structural Concrete