Research on Transfer Length of Pretensioned Prestressed Concrete Members Under Corrosion

YI Ju; WANG Lei; LEI Ming; HU Zhuo; TU Ronghui

doi:10.13204/j.gyjzG22042520

Volume 53 Issue 10

Oct. 2023

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YI Ju, WANG Lei, LEI Ming, HU Zhuo, TU Ronghui. Research on Transfer Length of Pretensioned Prestressed Concrete Members Under Corrosion[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(10): 44-50. doi: 10.13204/j.gyjzG22042520

Citation:

YI Ju, WANG Lei, LEI Ming, HU Zhuo, TU Ronghui. Research on Transfer Length of Pretensioned Prestressed Concrete Members Under Corrosion[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(10): 44-50. doi: 10.13204/j.gyjzG22042520

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Research on Transfer Length of Pretensioned Prestressed Concrete Members Under Corrosion

doi: 10.13204/j.gyjzG22042520

YI Ju¹,
WANG Lei^{2
,
,},
LEI Ming¹,
HU Zhuo²,
TU Ronghui^2,3

1. School of Civil Engineering, Changsha University, Changsha 410022, China;
2. School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China;
3. Traffic Engineering Management Center of Zhejiang Province, Hangzhou 310014, China

Received Date: 2022-04-25
Available Online: 2023-12-18

Abstract

Abstract

The evaluation of prestress transfer length of corroded pretensioned prestressed concrete (PC) members plays a significant role in assessing the performance of these structures. Firstly, the concrete cracking at member end and mechanical characteristics at the transfer interface caused by prestress releasing were analyzed based on the thick-walled cylinder model. Then, considering the rust expansion characteristics of seven-wire cross-section of steel strands, the further cracking characteristics of concrete along the transfer length under corrosion were analyzed by combining initial releasing cracking and corrosion-induced cracking, the relations between corrosion depth, corrosion loss and interfacial rust expansion displacement were established along the transfer length, considering the tensile softening of cracked concrete, the radial confining stress model of strands under the combined confinement of cracked concrete and stirrups was derived along the transfer length, then the bond stress distribution was obtained. Finally, based on the equilibrium relations between bond stress and prestress, the strain distribution of steel strands and concrete was obtained, and the prestress transfer length under corrosion-induced concrete cracking was determined. The comparison between analytical and experimental results showed that this method could reasonably predict the development laws of transfer length of corroded pretensioned PC members with various corrosion locations and degrees.
- pretensioned,
- prestressing,
- concrete,
- corrosion,
- transfer length

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References(19)

References

[1]	YI J, WANG L, FLOYD ROYCE W, et al. Rotation-affected bond strength model between steel strand and concrete [J/OL]. Engineering Structures, 2020, 204[2022-04-25].https://www.sciencedirect.com/science/article/abs/pii/S0141029619322412.
[2]	王磊,戴理朝,易驹,等. 预应力钢绞线锈胀及混凝土开裂预测[J]. 工程力学,2018,35(12):54-62.
[3]	张晶晶,辛勤,窦远明,等. 体外预应力加固部分预应力混凝土锈蚀梁抗弯性能研究[J]. 工业建筑,2018,48(9):198-203.
[4]	施成,王继军,王梦,等.先张法轨道板预应力传递长度的关键影响因素研究[J]. 铁道建筑,2015(2):96-100.
[5]	MARTI-VARGAS J R, CARO L A, SERNA P. Experimental technique for measuring the long-term transfer length in prestressed concrete[J]. Strain, 2013,49(2):125-134.
[6]	王梦,杨全亮,王继军,等. 高速铁路先张法轨道板预应力传递长度研究[J]. 中国铁道科学,2015,36(1):48-53.
[7]	谢发祥,李文祥,高翔,等. 环向约束作用下预应力传递长度理论解析和试验[J]. 长安大学学报(自然科学版),2019,39(6):78-88.
[8]	LEE C, LEE S, SHIN S. Modeling of transfer region with local bond-slip relationships[J]. ACI Structural Journal, 2017, 114(1):187-196.
[9]	ABDELATIF A O, OWEN J S, HUSSEIN M F M. Modelling the prestress transfer in pre-tensioned concrete elements[J]. Finite Elements in Analysis & Design, 2015(94):47-63.
[10]	RAMIREZ-GARCIA A T, DANG C N, HALE W M, et al. A higher-order equation for modeling strand bond in pretensioned concrete beams[J]. Engineering Structures, 2017(131):345-361.
[11]	OH B H, CHOI Y C, KIM E S. Theoretical analysis of transfer lengths in pretensioned prestressed concrete members[J]. Journal of Engineering Mechanics, 2006, 132:1057-1066.
[12]	OH B H, LIM S N, LEE M K, et al. Analysis and prediction of transfer length in pretensioned, prestressed concrete members[J]. ACI Structural Journal, 2014, 111(3):549-560.
[13]	BENITEZ J M, GALVEZ J C. Bond modelling of prestressed concrete during the prestressing force release[J]. Materials & Structures, 2011, 44(1):263-278.
[14]	DEN UIJL JA. Bond modelling of prestressing strand[J]. ACI Special Publication, 1998,180:145-170.
[15]	BALAZS G L. Transfer control of prestressing strands[J]. Precast/Prestressed Concrete Institute Journal, 1992, 37(6):60-71.
[16]	DAI L Z, CHEN H, WANG L, et al. Transfer length prediction in pre-tensioned concrete beams under corrosive cracking[J]. Structures, 2021(30):938-948.
[17]	LUNDGREN K. Modelling the effect of corrosion on bond in reinforced concrete[J]. Magazine of Concrete Research, 2002, 54(3):165-173.
[18]	HAN S J, LEE D H, CHO S H, et al. Estimation of transfer lengths in precast pretensioned concrete members based on a modified thick-walled cylinder model[J]. Structural Concrete, 2016, 17(1):52-62.
[19]	YI J, WANG L, FLOYD ROYCE W. Bond strength model of strand in corrosion-induced cracking concrete[J]. ACI Structural Journal, 2020, 117(6):119-132.