MODIFICATION OF FIP STRUT-AND-TIE MODEL FOR DESIGN OF INTERIOR ANCHORAGE ZONES OF POST-TENSIONED CONCRETE STRUCTURES

Zhao Jianli; Shen Shuilong

doi:10.13204/j.gyjz200912015

Volume 39 Issue 12

Dec. 2014

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Zhao Jianli, Shen Shuilong. MODIFICATION OF FIP STRUT-AND-TIE MODEL FOR DESIGN OF INTERIOR ANCHORAGE ZONES OF POST-TENSIONED CONCRETE STRUCTURES[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 57-60. doi: 10.13204/j.gyjz200912015

Citation:

Zhao Jianli, Shen Shuilong. MODIFICATION OF FIP STRUT-AND-TIE MODEL FOR DESIGN OF INTERIOR ANCHORAGE ZONES OF POST-TENSIONED CONCRETE STRUCTURES[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 57-60. doi: 10.13204/j.gyjz200912015

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MODIFICATION OF FIP STRUT-AND-TIE MODEL FOR DESIGN OF INTERIOR ANCHORAGE ZONES OF POST-TENSIONED CONCRETE STRUCTURES

doi: 10.13204/j.gyjz200912015

1.
Department of Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China

Received Date: 2009-01-15
Publish Date: 2009-12-20

Abstract

Abstract

A stress analysis of the interior anchorage zones of post-tensioned concrete structures(IAZPTCS) is conducted using FEM.According to the analytical results,it is found that there are some limitations of the present design method(strut-and-tie model,STM) for IAZPTCS as recommended by International Federation for Prestressing(FIP) in 1996.A modified approach of STM is proposed.Comparing with the original FIP model,in the proposed approach,the locations and the internal forces of the ties and struts are adjusted,and the dimensional ratio of the width of the anchorage over the width of the member(b/h) can be varied in a wide range.By using the proposed model,the amount of reinforcement can be decreased by about 30% in the interior anchorage zones.
- post-tensioned concrete,
- interior anchorage zone,
- strut-and-tie model,
- finite element method

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References(10)

References

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GB 500102002混凝土结构设计规范[S].

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[5] Burdet O L.Analysis and Design of Anchorage Zones in Post-TensionedConcrete Bridges[D]Austiun:University of Texas at Austin.1990.

[6] Sanders D H.Design and Behavior of Post-Tensioned ConcreteAnchorage Zones[D].Texas:University of Texas at Austin.1990.

[7] AASHTO.AASHTO LRFD Bridge Design Specifications[S].4thEdition.American Association of State Highway Officials(AASHTO).2006.

[8] Leu L J,Huang C W.Strut-and-Tie Design Methodology for Three-Dimensional Reinforced Concrete Structures[J].Journal of StructuralEngineering,2006,132(6):929-938.

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