Calculation Method for Flexural Capacity of Corroded PC Beams Considering Bond Degradation

Yafei MA; Yu LIU; Zhongzhao GUO; Lei WANG; Jianren ZHANG

doi:10.13409/j.cnki.jdpme.2020.04.019

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Calculation Method for Flexural Capacity of Corroded PC Beams Considering Bond Degradation

更新时间：2025-09-25

- Calculation Method for Flexural Capacity of Corroded PC Beams Considering Bond Degradation
- Journal of Disaster Prevention and Mitigation Engineering Vol. 40, Issue 4, Pages: 639-646(2020)
- 作者机构：
  
  长沙理工大学土木工程学院, 湖南长沙 410114
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2020.04.019
  CLC： U446
- Received：28 July 2018，
  
  Revised：2018-09-19，
  
  Published：15 August 2020
- 稿件说明：
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马亚飞,刘宇,郭忠照等.考虑黏结性退化的锈蚀PC梁抗弯承载力计算方法[J].防灾减灾工程学报,2020,40(04):639-646.

MA Yafei,LIU Yu,GUO Zhongzhao,et al.Calculation Method for Flexural Capacity of Corroded PC Beams Considering Bond Degradation[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(04):639-646.
马亚飞,刘宇,郭忠照等.考虑黏结性退化的锈蚀PC梁抗弯承载力计算方法[J].防灾减灾工程学报,2020,40(04):639-646. DOI： 10.13409/j.cnki.jdpme.2020.04.019.

MA Yafei,LIU Yu,GUO Zhongzhao,et al.Calculation Method for Flexural Capacity of Corroded PC Beams Considering Bond Degradation[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(04):639-646. DOI： 10.13409/j.cnki.jdpme.2020.04.019.

摘要

钢绞线锈蚀降低了其与混凝土间的黏结性，导致钢绞线与其周围混凝土间的变形不协调，影响预应力混凝土梁的抗弯性能。采用快速锈蚀试验得到了不同锈蚀程度的16个有箍筋和无箍筋拉拔试件，通过拉拔试验得到了试件开始滑移及破坏时的拉拔力；回归了黏结折减系数与锈蚀率之间的关系式，并将其融入到预应力混凝土梁的抗弯承载力分析模型中，提出了考虑黏结性退化的锈蚀预应力混凝土梁抗弯承载力计算方法。试验结果表明：有箍筋试件的黏结强度大于无箍筋试件；随着钢绞线锈蚀水平的增大，箍筋对黏结强度退化的约束作用逐渐减小；黏结折减系数随锈蚀率的增加呈指数函数规律递减。将理论值与本文及已有文献中锈蚀预应力混凝土梁抗弯性能试验结果进行了比较，计算结果表明本方法预测精度较高，最大误差在6%以内，验证了本抗弯承载力计算方法的适用性，可为服役预应力混凝土桥梁抗弯承载力评估提供参考。

Abstract

Strand corrosion degrades the bond behavior between the strand and concrete

resulting in deformation incompatibility between the strand and surrounding concrete and affecting the flexural performance of the prestressed concrete beams. Sixteen pull-out specimens with and without stirrups under different strand corrosion levels are obtained by accelerated corrosion test. The pull-out forces corresponding to the initial slip and failure are measured

respectively. The relationship between the bond degradation coefficient and strand corrosion loss is regressed. Following this

a modified calculation method for the flexural capacity of corroded prestressed concrete beams considering bond degradation is proposed by incorporating the bond degradation coefficient. The experimental results show that the bond strength of the pull-out specimens with stirrup is larger than that of without stirrup. The effect of the stirrup on the deterioration of bond strength decreases as corrosion loss increases. The bond degradation coefficient decreases exponentially with the increase of strand corrosion loss. The theoretical values are compared with the test results of corroded prestressed concrete in this paper and those available in the published literatures. The calculation results show that the method has a higher prediction accuracy

and the maximum error is less than 6%

which demonstrates the applicability of the presented method. The proposed method may provide a reference for the evaluation of the bending bearing capacity of existing prestressed concrete bridges.

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references

Wang L , Zhang X , Zhang J , et al . Effect of insufficient grouting and strand corrosion on flexural behavior of PC beams [J]. Construction and Building Materials , 2014 , 53 : 213 - 224 .

Elbatanouny M K , Ziehl P H , Larosche A , et al . Acoustic emission monitoring for assessment of prestressed concrete beams [J]. Construction and Building Materials , 2014 , 58 : 46 - 53 .

Darmawan M S , Stewart M G . Spatial time-dependent reliability analysis of corroding pretensioned prestressed concrete bridge girders [J]. Structural Safety , 2007 , 29 : 16 - 31 .

罗小勇 , 李政 . 无粘结预应力钢绞线锈蚀后力学性能研究 [J]. 铁道学报 , 2008 , 30 ( 2 ): 108 - 112 .

Luo X Y , Li Zh . Mechanical performance of corroded unbonded prestressed steel stranded wires [J]. Journal of the China Railway Society , 2008 , 30 ( 2 ): 108 - 112 . (in Chinese)

李富民 . 氯盐环境钢绞线预应力混凝土结构的腐蚀效应 [D]. 徐州：中国矿业大学 , 2008 .

Li F M . Effect of steel strands corrosion on prestressed concrete structures under chloride environment [D]. Xuzhou : China University of Mining and Technology , 2008 . (in Chinese)

Wang L , Zhang X , Zhang J , et al . Simplified model for corrosion-induced bond degradation between steel strand and concrete [J]. Journal of Materials in Civil Engineering , 2016 , 29 ( 4 ): 04016257 .

Ma Y , Guo Z , Wang L , et al . Experimental investigation of corrosion effect on bond behavior between reinforcing bar and concrete [J]. Construction and Building Materials , 2017 , 152 : 240 - 249 .

Ma Y , Zhang J , Wang L , et al . Probabilistic prediction with Bayesian updating for strength degradation of RC bridge beams [J]. Structural Safety , 2013 , 44 : 102 - 109 .

Maaddawy T E . Analytical model to predict nonlinear flexural behavior of corroded reinforced concrete beams [J]. ACI Structural Journal , 2005 , 102 ( 4 ): 550 - 559 .

王磊 , 戴理朝 , 张旭辉 , 等 . 腐蚀对预应力筋与混凝土间变形协调性的影响 [J]. 安全与环境学报 , 2014 , 14 ( 4 ): 5 - 10 .

Wang L , Dai L Zh , Zhang X H , et al . Impact of corrosion on the compatibility between the prestressed strand and the concrete [J]. Journal of Safety and Environment , 2014 , 14 ( 4 ): 5 - 10 . (in Chinese)

Li F , Yuan Y . Effects of corrosion on bond behavior between steel strand and concrete [J]. Construction & Building Materials , 2013 , 38 ( 2 ): 413 - 422 .

Naaman A E , Burns N , French C , et al . Stresses in unbonded prestressing tendons at ultimate: recommendation [J]. ACI Structural Journal , 2002 , 99 ( 4 ): 518 - 529 .

王磊 , 张旭辉 , 张建仁 . 局部无压浆PC构件抗弯性能试验及计算方法 [J]. 中国公路学报 , 2014 , 27 ( 10 ): 64 - 75 .

Wang L , Zhang X H , Zhang J R . Experimental study and calculation for flexural behavior of locally ungrouted PC beams [J]. China Journal of Highway and Transport , 2014 , 27 ( 10 ): 64 - 75 . (in Chinese)

Dang C N , Murray C D , Floyd R W , et al . Analysis of bond stress distribution for prestressing strand by standard test for strand bond [J]. Engineering Structures , 2014 , 72 : 152 - 159 .

余芳 . 钢绞线腐蚀后的部分预应力混凝土梁受力性能研究 [D]. 大连：大连理工大学 , 2013 .

Yu F . Study on mechanical performance of partial prestressed concrete beams with corroded strand [D]. Dalian : Dalian University of Technology , 2013 . (in Chinese)

Rinaldi Z , Imperatore S , Valente C . Experimental evaluation of the flexural behavior of corroded P/C beams [J]. Construction and Building Materials , 2010 , 24 ( 11 ): 2 267 - 2 278 .

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