Internal Force System and Current Secondary Moment Concept in Prestressed Structures

Jian Yu Zeng; Xiao Zu Su

doi:10.4028/www.scientific.net/AMM.501-504.611

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 501-504Internal Force System and Current Secondary Moment...

Internal Force System and Current Secondary Moment Concept in Prestressed Structures

Abstract:

The internal forces in a prestressed concrete structure are of special nature due to the existence of tendons. And flaws can be found in the traditional concept of secondary moment such that common computation method of secondary moment may produce unreasonable results. This article aims at getting a better understanding of internal forces in prestressed structures and solving the relevant problems. Starting from the basic principles of internal force analysis, a new system of internal forces is put forward by which the relationship between the compression resultant on concrete cross-section and the sectional internal forces is made clear. On this basis, a definition on the concept of current secondary moment (M_cs) is proposed and its superiority pointed out. Finally, theoretical analyses are carried out on the method for calculating M_cs in the posttentioned continuous beams with unbonded and bonded prestressing tendons.

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Periodical:

Applied Mechanics and Materials (Volumes 501-504)

Pages:

611-619

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.501-504.611

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Online since:

January 2014

Authors:

Jian Yu Zeng, Xiao Zu Su*

Keywords:

Internal Force System, Prestressed Concrete, Secondary Moment, Statically Indeterminate Structure

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References

[1] Nilson, Arthur H. Design of prestressed concrete, 2nd edition. New York: Wiley(1987).

Google Scholar

[2] Lin, T. Y.; Burns, N. H. Design of prestressed concrete structures, 3d edition New York: Wiley(1981).

Google Scholar

[3] Yang Huaxiong. Discussion of a concept in works of Nilson, Arthur H and Lin, T. Y. Sichuan Building Science. Vol. 27, No. 4, p.86 (in Chinese) (2001).

Google Scholar

[4] ACI Committee318. ACI318-11 Building Code Requirements for Structural Concrete. Farmington Hills: American Concrete Institute(2011).

Google Scholar

[5] Burgoyne, C. J. Cable design for continuous prestressed concrete bridges. Proc. Inst. Civ. Engrs. Vol. 85, pp.161-184(1988).

Google Scholar

[6] William F. Riley; Leroy D. Sturges; Don H. Morris. Mechanics of Materials, 6th edition New York: Wiley(2006).

Google Scholar