Study on Calculation Method for Deflection of PC Beams Subjected to Local Corrosion

Authors

• YAO Shuhao, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaFollow
• YAO Yan, Guangzhou Branch, CCCC Road and Bridge Construction Co., Ltd., Guangzhou, Guangdong 510000, China
• PENG Jianxin, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaFollow
• XIAO Junyi, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China
• ZHAO Yang, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China

Corresponding Author

彭建新, 男, 博士, 教授. E-mail: 006160@csust.edu.cn

Abstract

To reasonably evaluate the increase in deflection of PC beams after local corrosion, a calculation method for deflection of corroded PC beams based on the stress and strain model of corroded reinforcement was proposed by considering the beam-arch effect formed by reinforcement corrosion and the degradation of bond strength between reinforcement and concrete. Bending tests on a batch of locally corroded PC beams were carried out to verify the calculation method, and a parameter analysis on the corrosion rate and corrosion position was conducted. The results show that the load ‒ deflection curves obtained by the calculation method are in good agreement with the experimental results. When the corrosion rate is less than 5%, the bending stiffness of the PC beams basically does not change;when the corrosion rate exceeds 5%, the weakening degree of the corrosion rate on the bending stiffness of the PC beams gradually increases, and the deflection of the corroded beams increases significantly with the increase of the corrosion rate. The influence of the corrosion position on the deflection is related to the corrosion rate;when the corrosion rate is relatively low, the change of the corrosion position has little influence on the deflection;when the corrosion rate exceeds 10%, the influence increases, and the mid-span is the most unfavorable.

Publication Date

4-24-2026

DOI

10.14048/j.issn.1671-2579.2026.02.013

First Page

117

Last Page

124

Submission Date

April 2026

Recommended Citation

Shuhao, YAO; Yan, YAO; Jianxin, PENG; Junyi, XIAO; and Yang, ZHAO (2026) "Study on Calculation Method for Deflection of PC Beams Subjected to Local Corrosion," Journal of China & Foreign Highway: Vol. 46: Iss. 2, Article 13.
DOI: 10.14048/j.issn.1671-2579.2026.02.013
Available at: https://zwgl1980.csust.edu.cn/journal/vol46/iss2/13

Reference

[1] 唐皇, 彭建新, 王晗. 不同钢板加固方式对锈蚀钢筋混凝土梁承载性能的影响 [J]. 土木与环境工程学报 (中英文), 2020, 42(6): 103-111. TANG Huang, PENG Jianxin, WANG Han. Influences of different steel plate strengthening methods on the bearing capacity of corroded reinforced concrete beams [J]. Journal of Civil and Environmental Engineering, 2020, 42(6): 103-111.
[2] 张仁波, 杨鸿申, 金浏, 等. 锈蚀钢筋混凝土梁动态抗弯性能细观数值研究 [J]. 振动与冲击, 2023, 42(9): 77-85. ZHANG Renbo, YANG Hongshen, JIN Liu, et al. Meso numerical study on dynamic anti-bending performance of corroded RC beam [J]. Journal of Vibration and Shock, 2023, 42(9): 77-85.
[3] 刘西光, 张伟平, 叶志文, 等. 疲劳损伤锈蚀预应力混凝土梁受力性能研究 [J]. 建筑结构学报, 2019, 40(1): 89-96LIU Xiguang, ZHANG Weiping, YE Zhiwen, et al. Structural behavior of corroded pretensioned prestressed concrete beams subjected to high-cycle fatigue loading [J]. Journal of Building Structures, 2019, 40(1): 89-96.
[4] 彭建新, 周鹏程, 程小康, 等. 饱和混凝土结构裂缝区氯离子扩散模型研究 [J]. 中外公路，2025, 45 (2): 118-125. PENG Jianxin, ZHOU Pengcheng, CHENG Xiaokang, et al. Study on chloride ion diffusion model in crack zones of saturated concrete structure [J]. Journal of China & Foreign Highway, 2025，45(2): 118-125.
[5] 李悦, 曹竞, 张常勇, 等. 主余震和氯离子侵蚀耦合作用下近海钢筋混凝土桥梁地震韧性研究 [J]. 桥梁建设, 2025, 55(6): 41-48. LI Yue, CAO Jing, ZHANG Changyong, et al. Research on seismic resilience of offshore reinforced concrete bridge under coupled effects of mainshock-aftershock sequences and chloride ion corrosion [J]. Bridge Construction, 2025, 55(6): 41-48.
[6] 许开成, 曹艳明, 陈子超, 等. 模拟酸雨腐蚀下预应力混凝土梁的抗弯性能研究 [J]. 计算力学学报, 2019, 36(1): 124-131. XU Kaicheng, CAO Yanming, CHEN Zichao, et al. Study on flexural behavior of prestressed concrete beams under simulated acid rain corrosion [J]. Chinese Journal of Computational Mechanics, 2019, 36(1): 124-131.
[7] 冯滔滔, 余红发, 曾祥超, 等. 海洋环境下预应力混凝土箱梁寿命分析 [J]. 海洋工程, 2015, 33(6): 75-81, 89. FENG Taotao, YU Hongfa, ZENG Xiangchao, et al. Service life analysis of pre-concrete box girders exposed to marine environment [J]. The Ocean Engineering, 2015, 33(6): 75-81, 89.
[8] 何雄君, 陆爱民. 预应力混凝土桥梁因钢束锈蚀的非线性分析 [J]. 公路交通科技, 2010, 27(1): 58-61, 83. HE Xiongjun, LU Aimin. Nonlinear analysis of prestressed concrete bridge with corroded steel strands [J]. Journal of Highway and Transportation Research and Development, 2010, 27(1): 58-61, 83.
[9] 邢国华, 武名阳, 常召群, 等. 锈蚀预应力混凝土梁承载力及破坏模式研究 [J]. 工程力学, 2020, 37(7): 177-188. XING Guohua, WU Mingyang, CHANG Zhaoqun, et al. Load bearing capacity and failure mode of corroded prestressed concrete beams [J]. Engineering Mechanics, 2020, 37(7): 177-188.
[10] 曾天宝，陈宏，黄筱淇，等. 钢绞线非均匀锈蚀下混凝土胀裂细观数值模拟 [J]. 中外公路，2024, 44 (2): 174-181. ZENG Tianbao，CHEN Hong，HUANG Xiaoqi, et al. Mesoscopic numerical simulation of concrete cracking caused by nonuniform corrosion of strands [J]. Journal of China & Foreign Highway, 2024，44(2): 174-181.
[11] 刘云雁, 范颖芳, 喻建, 等. 氯盐环境下锈蚀预应力混凝土梁抗弯性能试验 [J]. 复合材料学报, 2020, 37(3): 707-715. LIU Yunyan, FAN Yingfang, YU Jian, et al. Flexural behavior test of corroded prestressed concrete beams under chloride environment [J]. Acta Materiae Compositae Sinica, 2020, 37(3): 707-715.
[12] LIF M, LUOX Y, WANGK J, et al. Pitting damage characteristics on prestressing steel strands by combined action of fatigue load and chloride corrosion [J]. Journal of Bridge Engineering, 2017, 22(7): 04017023.
[13] 邹向农, 龙俊贤, 陈宇翔, 等. 腐蚀预应力混凝土桥梁抗力退化预测方法 [J]. 中外公路, 2019, 39(3): 84-89. ZOU Xiangnong, LONG Junxian, CHEN Yuxiang, et al. Prediction method of resistance degradation for corroded prestressed concrete bridges [J]. Journal of China & Foreign Highway, 2019, 39(3): 84-89.
[14] 周啟浩, 卢朝辉, 李海. 锈蚀高铁简支箱梁抗弯性能试验研究 [J]. 建筑结构, 2021, 51(增刊 1): 1514-1521. ZHOU Qihao, LU Zhaohui, LI Hai. Experimental study on flexural behavior of corroded high-speed rail simply supported box girder [J]. Building Structure, 2021, 51(sup 1): 1514-1521.
[15] CHEN H P, NEPAL J. Analytical model for residual bond strength of corroded reinforcement in concrete structures[J]. Journal of Engineering Mechanics, 2016, 142(2): 04015079.
[16] YU Q Q, GU X L, ZENG Y H, et al. Flexural behavior of Corrosion-Damaged prestressed concrete beams [J]. Engineering Structures, 2022, 272: 114985.
[17] 羊日华, 张建仁, 王磊, 等. 预应力筋局部锈蚀断裂混凝土梁抗弯性能试验研究 [J]. 中南大学学报 (自然科学版), 2018, 49(10): 2593-2601. YANG Rihua, ZHANG Jianren, WANG Lei, et al. Experimental research for flexural behavior on concrete beams with local corrosion fracture of strands [J]. Journal of Central South University (Science and Technology), 2018, 49(10): 2593-2601.
[18] WU T T, AKIYAMA M, LIM S, et al. Effects of spatial corrosion distribution and prestressing levels on the structural performance of deteriorated PC beams [J]. Construction and Building Materials, 2024, 421: 135650.
[19] MOAWAD M, MAHMOUD A, EL-KARMOTY H, et al. Behavior of corroded bonded partially prestressed concrete beams [J]. HBRC Journal, 2018, 14(1): 9-21.
[20] 中 国 建 筑 科 学 研 究 院. 混 凝 土 结 构 设 计 规 范: GB 50010—2010 [S]. 北京: 中国建筑工业出版社, 2010. China Academy of Building Research. Code for design of concrete structures: GB 50010—2010 [S]. Beijing: China Architecture & Building Press, 2010.
[21] 张建仁, 唐皇, 彭建新, 等. 钢板加固锈蚀 RC梁短期挠度计算方法和试验 [J]. 中国公路学报, 2015, 28(10): 41-50. ZHANG Jianren, TANG Huang, PENG Jianxin, et al. Calculating method and test research of short-term deflection of corroded RC beam strengthened by steel plate [J]. China Journal of Highway and Transport, 2015, 28(10): 41-50.
[22] RODRIGUEZ J, ORTEGA L M, CASAL J. Load carrying capacity of concrete structures with corroded reinforcement [J]. Construction and Building Materials, 1997, 11(4): 239-248.
[23] 王磊, 李双, 张旭辉, 等. 腐蚀预应力混凝土梁刚度的分析和计算 [J]. 工业建筑, 2015, 45(12): 88-93. WANG Lei, LI Shuang, ZHANG Xuhui, et al. Analysis and calculation of stiffness of corroded PC beams [J]. Industrial Construction, 2015, 45(12): 88-93.
[24] DAI L Z, WANG L, BIAN H B, et al. Flexural capacity prediction of corroded prestressed concrete beams incorporating bond degradation [J]. Journal of Aerospace Engineering, 2019, 32(4): 04019027.
[25] MAADDAWY T E, SOUDKI K, TOPPER T. Analytical model to predict nonlinear flexural behavior of corroded reinforced concrete beams [J]. ACI Structural Journal, 2005, 102(4): 550-559.
[26] KIVELL A. Effects of bond deterioration due to corrosion on seismic performance of reinforced concrete structures[D]. Christchurch: University of Canterbury, 2012.
[27] AU F T K, DU J S. Prediction of ultimate stress in unbonded prestressed tendons [J]. Magazine of Concrete Research, 2004, 56(1): 1-11.
[28] 付李, 尹强圣, 王浩, 等. 高强箍筋对普通混凝土梁抗剪性能的影响机理 [J]. 工程力学, 2023, 40(8): 126-137. FU Li, YIN Qiangsheng, WANG Hao, et al. Mechanism of influence of high-strength stirrup on shear performance of concrete beam [J]. Engineering Mechanics, 2023, 40(8): 126-137.