Download or read book Crack Widths in Partially Prestressed Concrete Beams written by Nicholas E. Martino and published by . This book was released on 1979 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cracking in Partially Prestressed Concrete Beams Subjected to Repeatedly Applied Bending and Shear written by Lee Chow Wah and published by . This book was released on 1980 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prediction of Maximum Flexural Crack Width in Partially Prestressed Concrete Beams written by Stephen Wayne Meier and published by . This book was released on 1979 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis and Design of Partially Prestressed Beams to Satisfy Serviceability Criteria written by A. Siriaksorn and published by . This book was released on 1978 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DEFORMATION AND CRACKING OF PARTIALLY PRESTRESSED CONCRETE BEAMS UNDER STATIC AND CYCLIC FATIGUE LOADING written by Muhaned H. Harajli and published by . This book was released on 1984 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Crack Widths and Deflections in Bonded Post Tensioned Partially Prestressed Concrete Beams written by G. A. McClurg and published by . This book was released on 1981 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crack Widths in Partially Prestressed Concrete Beams written by Nicholas E. Martino and published by . This book was released on 1979 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flexural Behavior of Unbonded Post tensioned Partially Prestressed Concrete Beams written by Ashraf Elzanaty and published by . This book was released on 1983 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crack Width of Partially Prestressed Concrete Flexural Members with Different Methods of Prestress written by Victor Fraser Ross Eagleson and published by . This book was released on 1994 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cracking in Prestressed Concrete Structures written by Grant T. Halvorsen and published by . This book was released on 1989 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Partial Prestressing From Theory to Practice written by M.Z. Cohn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: These volumes contain the edited documents presented at the NATO-Sponsored Advanced Research Workshop (ARW) on Partial Pre8tre88ing, from Theory to Practice, held at the CEBTP Research Centre of Saint-Remy-Ies-Chevreuse, France, June 18-22, 1984. The workshop was a direct extension of the International Symposium on Nonlinearity and Continuity in Pre8tre88ed Concrete, organized by the editor at the University of Waterloo, Waterloo, Canada, July 4-6, 1983. The organization of the NATO-ARW on Partial Prestressing was prompted by the need to explain and reduce the wide dirrerences of expert oph:iipn· on the subject, which make more difficult the accep tance of partial prestressing by the profession at large. Specifically, the workshop attempted to: - produce a more unified picture of partial presetressing, by con fronting and, where possible, reconciling some conflicting American and European views on this subject; - bring theoretical advances on partial prestressing within the grasp of engineering practice; - provide the required background for developing some guidelines on the use of partial prestressing, in agreement with existing structural concrete standards. The five themes selected for the workshop agenda were: (1) Problems of Partially Prestressed Concrete (PPC). (2) Partially Prestressed Concrete Members: Static Loading. (3) PPC Members: Repeated and Dynamic Loadings. (4) Continuity in Partially Prestressed Concrete. (5) Practice of Partial Prestressing.
Download or read book Cracking and Deformations of Partially Prestressed Concrete Beams written by A. W. Beeby and published by . This book was released on 1972 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Damping Characteristics of Reinforced and Partially Prestressed Concrete Beams written by Sanaul Huq Chowdhury and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Advances in construction materials and computational methods have made it possible to design and construct taller masts, buildings with increasingly slender frames, and bridges (and roof structures) with ever larger spans. In addition, masts, towers and new forms of construction such as offshore structures are being built in more hostile environments than previously contemplated. These evolving structures which keep extending the boundary of "normal" designs require that the designers take into account vibration of structures at the design stage to a much greater extent than they have done in the past. -- The slenderness of modern structures and the large magnitude of the loads that many of them must carry also make it imperative that such structures be designed for stresses induced by dynamic disturbances. The response of a structure to a dynamically applied load may be many times greater than its response to the same load applied statically. The relationship between a structure's static and dynamic responses depends primarily on its damping characteristics and on its natural periods of vibration. In fact, damping is one of the most significant contributors to the dynamic response of high-rise buildings, bridges, tall chimneys and other slender structures considered to be significantly affected by dynamic forces. -- Under a severe lateral dynamic loading condition, the structure that is likely to survive is one whose members are sufficiently ductile to absorb and dissipate energy by elastic and/or inelastic deformation. This requires the designer to realistically assess the possible levels of strength in flexural and shear elements. Thus, in designing such a concrete structure, it is important to understand and determine the ability of the structure to absorb energy under an external impulsive force. At this stage, information in this regard is lacking in published literature and the ability of the constituent elements of the structure to absorb energy is not well understood. This, for example, is true for reinforced and partially prestressed concrete beam, especially the cracked ones. In particular, no simple and accurate formulae are available to evaluate the damping ratios of reinforced and partially prestressed concrete beams cracked or otherwise, for use in the dynamic design of civil engineering structures. It is this area which forms the primary focus of this research. -- In this research, an extensive test programme has been carried out to study the cracking and damping behaviour of reinforced and partially prestressed concrete beams. The tests were carried out in two stages and involved a total of 30 reinforced and partially prestressed beams. Nine reinforced and 12 partially prestressed simply supported full-size box beams were tested at the first stage. Tested at the second stage were 2 simply supported and 3 two-equal span continuous reinforced full-size box beams and 4 solid rectangular full-size simply supported reinforced beams. For all the beams, at each level of loading, measurements were made of instantaneous and residual crack widths, instantaneous and residual concrete strains, and mid-span deflections. Each beam was also subjected to free vibration tests to measure its logarithmic decrement of damping corresponding to each load level. -- Based on the experimental results, two empirical formulae have been developed for predicting logarithmic decrement of damping separately in reinforced and partially prestressed concrete beams. These formulae predict damping from the residual crack widths of the beams. For these formulae to be of practical use, a formula relating the residual crack widths of concrete beams to the instantaneous average crack widths was developed. In addition, a unified formula was derived for the prediction of the instantaneous average crack widths based on the general beam parameters. As an alternative, separate formulae are also presented for predicting residual crack widths using mid-span deflections of reinforced and partially prestressed beams. These further enhance the practicability of the proposed damping formulae. -- In an effort to verify the accuracy and reliability of the proposed formulae, comparative studies are carried out based on the author's own laboratory test results as well as those available in published literature. In total, 104 full-size reinforced and prestressed concrete solid and box beams are involved in the comparative study. In general, good correlations are obtained for instantaneous and residual average crack widths and for logarithmic decrement of damping values. These are true for both reinforced and partially prestressed concrete beams.
Download or read book Cracking Deflection and Ultimate Strength of Partiallly Stressed Concrete Beams written by Murad Jaafar and published by . This book was released on 1983 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Te primary objective of this experimental investigation was to study flexural cracking behaviour and deflection of partially prestressed post tensioned beams. Fourteen T beams with various combinations of prestressed steel wires adn non prestressed steel bars were tested to failure. Each beam was simply supported on a simple span of 2.74m and was subjected to two symmetrical point loads. The number of prestressed steel wires and the non prestressed deformed bars was selected as being the main controlling parameter ofthis experimental investigation. The deflection, strain distribution and crack width of concrete beams were recorded at different loading stages. The experimental results form tests were compared with theoretical analysis and other empirical formulate as proposed by some researchers. It was observed that the crack initiation and propagation in partially prestressed beams with unbonded tendons depended on many factoes. The results agreed well with the findings os some researchers but were not in close agreement with other workers possibly because the beams were subjected to different conditions particularly due to unbonded tendons.
Download or read book Static and Repetitive Loading Tests on Full scale Prestressed Concrete Bridge Beams written by C. A. K. Irwin and published by . This book was released on 1977 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Investigations Into Cracking in Rectangular Prestressed Concrete Beams written by Paul William Abeles and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
