Distribution mode determination and simulation method of effective prestress for post-prestressing tendon

GUO Qi; HE Shuan-hai; REN Wei

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GUO Qi, HE Shuan-hai, REN Wei. Distribution mode determination and simulation method of effective prestress for post-prestressing tendon[J]. Journal of Traffic and Transportation Engineering, 2008, 8(6): 57-62.

Citation:

GUO Qi, HE Shuan-hai, REN Wei. Distribution mode determination and simulation method of effective prestress for post-prestressing tendon[J]. Journal of Traffic and Transportation Engineering, 2008, 8(6): 57-62.

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Distribution mode determination and simulation method of effective prestress for post-prestressing tendon

GUO Qi^{1, 2
,},
HE Shuan-hai²,
REN Wei²

1.
School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
2.
Key Laboratory for Bridge and Tunnel of Shaanxi Province, Chang'an University, Xi'an 710064, Shaanxi, China

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Author Bio:
GUO Qi (1976-)malelecturerPhD+86-29-82334872gq8558@126.com
Received Date: 2008-06-12
Publish Date: 2008-12-25

Abstract

Abstract

In order to know the effective value and longitudinal distribution state of effective prestress in inspection and evaluation process on the present condition of prestressing tendon for middle-span and long-span concrete bridges, an unified simulation method of the distribution was put forward. Based on prestress loss theory, a simplified analytic algorithm of virtual frictional loss function was set up in a universal way. By the means of the obtained stress datum of steel tendon at control point, the subordinated mode of effective prestress distribution along longitudinal direction was determined. As regards the effective prestress of steel tendon with complicated geometry pattern, its distribution regularity was simulated after the recognition of nominal coefficients for prestress loss. Simulation result shows that the relative error of effective prestress threshold is 5%, so the simulation method is feasible.
- bridge engineering,
- prestressed concrete,
- effective prestress,
- virtual frictional loss,
- nominal coefficient of prestress loss

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References(16)

References

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