Prestressed Concrete Designer's Handbook
Prestressed Concrete Designer's Handbook

Author: P.W. Abeles

Publisher: CRC Press

Published: 1981-01-01

Total Pages: 600

ISBN-13: 9780721012278

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The third edition of this authoritative handbook provides the structural designer with comprehensive guidance on prestressed concrete and its effective use, covering materials, behaviour, analysis and design of prestressed elements. It includes numerous examples, design charts and details of post-tensioning systems.

Damping Characteristics of Prestressed Concrete
Damping Characteristics of Prestressed Concrete

Author: Joseph Penzien

Publisher:

Published: 1962

Total Pages: 144

ISBN-13:

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Under steady state conditions, internal damping in prestressed concrete members may be less than 1% of critical if the initial prestress is sufficient to prevent tension cracks from developing. If tension cracks are allowed to develop, but on a miscroscopic scale, damping can be expected of the order of 2% of critical. If larger (visible) cracks are permitted to develop, higher damping would result. Under transient conditions, the amount of internal damping present in prestressed concrete members depends to a great extent on the past history of loading and on the amplitude of displacements produced. For those cases where members have been dynamically loaded only a few times to a given stress level which produces considerable cracking, damping can be expected anywhere in the range of 3 to 6% of critical. Magnitude and type of prestress in concrete members have an indirect influence on internal damping only because these parameters control the amount of cracking which can take place. (Author).