[1]朱海威,余红发,麻海燕,等.热带海洋环境下钢筋混凝土构件承载力退化研究[J].西安建筑科技大学学报(自然科学版),2024,56(04):512-524.[doi:10.15986/j.1006-7930.2024.04.005]
　ZHU Haiwei,YU Hongfa,MA Haiyan,et al.Load-bearing capacity degradation of reinforced concrete members in tropical marine environment[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2024,56(04):512-524.[doi:10.15986/j.1006-7930.2024.04.005]
点击复制

热带海洋环境下钢筋混凝土构件承载力退化研究()
分享到：

西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
56
期数:
2024年04期
页码:
512-524
栏目:
出版日期:
2024-08-28

文章信息/Info

Title:
Load-bearing capacity degradation of reinforced concrete members in tropical marine environment
文章编号:
1006-7930(2024)04-0512-13
作者:
朱海威1; 2; 余红发2; 麻海燕2; 达 波2; 范志宏1; 杨海成1; 杨礼明3
(1.中交四航工程研究院有限公司,广东 广州 510230; 2.南京航空航天大学 土木与机场工程系,江苏 南京 211106; 3.广西交通设计集团有限公司,广西 南宁 530029)
Author(s):
ZHU Haiwei1; 2; YU Hongfa2; MA Haiyan2; DA Bo2; FAN Zhihong1; YANG Haicheng1; YANG Liming3
(1.CCCC Fourth Harbor Engineering Institute Co., Ltd., Guangzhou 510230, China; 2.Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; 3.Guangxi Communications Design Group Co., Ltd., Nanning 530029, China)
关键词:
热带海洋环境;  现场暴露;  钢筋混凝土构件;  混凝土劣化;  钢筋锈蚀;  承载力退化
Keywords:
tropical marine environment;  field exposure;  reinforced concrete members;  concrete deterioration;  reinforcement corrosion;  load-bearing capacity degradation
分类号:
TU654
DOI:
10.15986/j.1006-7930.2024.04.005
文献标志码:
A
摘要:
为研究热带海洋严酷环境下钢筋混凝土结构的承载力退化规律,通过对南海现场暴露3.5a后的C50、C80钢筋混凝土梁柱构件进行混凝土回弹值与超声波、钢筋锈蚀率与拉伸、梁受弯与柱大偏心受压测试,系统分析混凝土抗压强度、钢筋失重率、梁受弯承载力与柱大偏心受压承载力等物理力学性能的变化特征,并与既有承载力退化模型进行验证. 结果表明:经现场暴露试验后,C50、C80构件的混凝土抗压强度与相对动弹性模量下降,且C50构件中混凝土损伤较C80构件的严重; C50构件已发生钢筋锈蚀,而C80构件中钢筋仍处于钝化状态; C50、C80梁在受弯条件下的抗裂性能与极限受弯承载力下降,且C50梁较C80梁下降明显; C50、C80柱在大偏心受压条件下的抗裂性能与极限受压承载力小幅下降.
Abstract:
In order to investigate the deterioration laws of load-bearing capacity of reinforced concrete structures in tropical marine environment, changes in the compressive strength of concrete, relative dynamic elastic modulus of concrete, reinforcement weight loss, bending capacity of beams and eccentric compression capacity of columns were analyzed by testing the rebound value, ultrasound wave velocity, beam bending resistance and column resistance of the reinforced concrete members exposed in the South China Sea for 3.5 years, and the data was verified with the theoretical formulas. The results show that after the field exposure, the concrete compressive strength and relative dynamic elastic modulus of C50 and C80 members decrease, and the concrete damage in C50 members was more serious than that in C80 members. The reinforcement in the C50 members has been corroded, while the reinforcement in the C80 members is still in the passivation state. The crack resistance and ultimate bending capacity of C50 and C80 beams under bending conditions decrease, and the decrease of C50 beams is more obvious than that of C80 beams. The crack resistance and ultimate bearing capacity of C50 and C80 columns under large eccentric compression decrease slightly.

参考文献/References:

[1]金祖权, 于泳, 王鹏刚, 等. 氯盐-硫酸盐环境下钢筋混凝土腐蚀损伤[M]. 北京: 科学出版社, 2021.
JIN Zuquan, YU Yong, WANG Penggang, et al. Corrosion damage of reinforced concrete in chloride and sulfate environment[M]. Beijing: Science Press, 2021.
[2]BOHNI H, HUNKELER H, SCHIEGG Y, et al. Corrosion in reinforced concrete structures[M]. London: Woodhead Publishing Limited, 2005.
[3]HE Z, HE C, MA G, et al. Experimental investigation on the deterioration process and spatial variation of corrosion damage of RC segmental specimens under sustained load[J]. Construction and Building Materials, 2022, 349:128731.
[4]DONG Z, GU X, JIN Z, et al. Experimental and numerical investigations on the rate-limiting step for macrocell corrosion of reinforcing steel in concrete[J]. Journal of Materials in Civil Engineering, 2021, 34(1): 04021407.
[5]李迎珠, 张勤, 李文杰, 等. 氯盐环境下钢筋连接件受拉破坏特性研究[J]. 西安建筑科技大学学报(自然科学版), 2023, 55(4):546-554.
LI Yingzhu, ZHANG Qin, LI Wenjie, et al. Study on longitudinal corrosion behavior of internal reinforcement in repaired concrete[J]. J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition), 2023, 55(4):546-554.
[6]朱海威, 余红发, 麻海燕. 阻锈剂对海洋环境下混凝土中钢筋腐蚀影响的电化学研究[J]. 东南大学学报(自然科学版), 2020, 50(1):109-119.
ZHU Haiwei, YU Hongfa, MA Haiyan. Electrochemical study on effect of rust inhibitors on corrosion of reinforcing bar in concrete in marine environment[J]. Journal of Southeast University(Natural Science Edition), 2020, 50(1):109-119.
[7]陶琦. 高、低浓度硫酸盐侵蚀下不同水灰比混凝土抗剪性能的受损劣化规律[J]. 西安建筑科技大学学报(自然科学版), 2021, 53(5): 630-635.
TAO Qi. Damage and deterioration of shear properties of concrete with different water cement ratio under high and low concentration sulfate attack[J]. J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition), 2021, 53(5): 630-635.
[8]MOHAMMED T, HAMADA H, YAMAJI T. Concrete after 30 years of exposure-part II: Chloride ingress and corrosion of steel bars[J]. ACI Materials Journal, 2004, 101: 13-18.
[9]MOHAMMED T, HAMADA H, YAMAJI T. Long-term durability of concrete made with slag cements under marine environment[J]. ACI Materials Journal, 2019, 116(5):5-16.
[10]张宏, 朱海威, 杨海成, 等. 冰冻海水环境下混凝土表面涂层长期暴露试验研究[J]. 硅酸盐通报, 2022, 41(4):1301-1307.
ZHANG Hong, ZHU Haiwei, YANG Haicheng, et al. Long-term exposure test of concrete surface coating in frozen seawater environment[J]. Bulletin of The Chinese Ceramic Society, 2022, 41(4):1301-1307.
[11]POUPARD O, HOSTIS V, CATINAUD S, et al. Corrosion damage diagnosis of a reinforced concrete beam after 40 years natural exposure in marine environment[J]. Cement and Concrete Research, 2006, 36(3): 504-520.
[12]TANG L, UTGENANNT P, BOUBITSAS D. Durability and service life prediction of reinforced concrete structures[J]. Journal of The Chinese Ceramic Society, 2015, 43: 1408-1419.
[13]YU H, DA B, MA H, et al. Durability of concrete structures in tropical atoll environment[J]. Ocean Engineering, 2017, 135:1-10.
[14]OSLAKOVIC S, BJEGOVIC D, MIKULIC D. Evaluation of service life design models on concrete structures exposed to marine environment[J]. Materials and Structures, 2010, 43(10):1397-1412.
[15]TANG Y, BAO Y, ZHENG Z, et al. Performance assessment of deteriorating reinforced concrete drainage culverts: A case study[J]. Engineering Failure Analysis, 2022, 131:105845.
[16]SNIGDHA R, BALAJI K, NAIDU G. Reliability assessment of structures subjected to chloride ingress in marine environment[J]. International Journal of Engineering and Technical Research, 2014, 2(12):86-88.
[17]ZHU H, YU H, MA H, et al. Advances in chloride diffusion of concrete exposed to marine field environment[C]//4th International RILEM Conferences on Microstructure Related Durability of Cementitious Composites. Delft, Netherlands: Delft University of Technology, 2021.
[18]冷发光, 马孝轩, 丁威, 等. 滨海盐渍土环境中暴露17年的钢筋混凝土桩耐久性分析[J]. 建筑结构, 2011, 41(11): 148-151,144.
LENG Faguang, MA Xiaoxuan, DING Wei, et al. Durability analysis of RC piles exposed naturally in coastal saline soil environment for 17 years[J]. Building Structure, 2011, 41(11): 148-151,144.
[19]范志宏, 潘峻, 王胜年. 华南地区工程材料暴露试验研究——中长期试验[J]. 华南港工, 2008(11): 13-18.
FAN Zhihong, PAN Jun, WANG Shengnian. Long term and medium term exposition test and research for materials in South China region[J]. South China Harbour Engineering, 2008(11): 13-18.
[20]王胜年, 田俊峰, 范志宏. 基于暴露试验和实体工程调查的海工混凝土结构耐久性寿命预测理论和方法[J]. 中国港湾建设, 2010(169): 68-74.
WANG Shengnian, TIAN Junfeng, FAN Zhihong. Research on theory and method of service life prediction of marine concrete structures based on exposure test and filed investigation[J]. China Harbour Engineering, 2010(169): 68-74.
[21]李震, 朱雅仙, 蔡伟成, 等. 钢筋混凝土腐蚀实海暴露试验[J]. 混凝土, 2010(2): 25-28.
LI Zhen, ZHU Yaxian, CAI Weicheng, et al. Coastal exposure test of corrosion of rebar in concrete[J]. Concrete, 2010(2): 25-28.
[22]中华人民共和国交通运输部. 水运工程混凝土试验检测技术规范:JTS/T 236—2019[S]. 北京: 中国建筑工业出版社, 2019.
Ministry of Transport of the People's Republic of China. Technical Specification for concrete testing of port and waterway engineering: JGJ/T 236—2019[S]. Beijing: China Architecture & Building Press, 2019.
[23]中国工程建设标准化协会. 超声回弹综合法检测混凝土强度技术规程: CECS 02: 2005[S]. 北京: 中国建筑工业出版社, 2005.
China Engineering Construction Standardization Association. Technical specification for detecting strength of concrete by ultrasonic-rebound combined method: CECS 02: 2005[S]. Beijing: China Architecture & Building Press, 2005.
[24]中华人民共和国住房和城乡建设部. 普通混凝土长期性能和耐久性能试验方法: GB/T 50082—2009[S]. 北京: 中国建筑工业出版社, 2009.
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Test method for long-term performance and durability of ordinary concrete: GB/T 50082—2009[S]. Beijing: China Architecture & Building Press, 2009.
[25]中华人民共和国住房和城乡建设部. 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.
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Code for design of concrete structures: GB 50010—2010[S]. Beijing: Architecture & Building, 2010.
[26]中华人民共和国住房和城乡建设部. 混凝土结构试验方法标准: GB/T 50152—2012[S]. 北京: 中国建筑工业出版社, 2012.
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Standard for test methods of concrete structures: GB/T 50152—2012[S]. Beijing: Architecture & Building, 2012.
[27]中华人民共和国水利部. 水工混凝土结构设计规范: SL 191-2008[S]. 北京: 中国水利水电出版社, 2008.
Ministry of Water Resources of the People's Republic of China. Code for design of hydraulic concrete structures: SL 191—2008[S]. Beijing: China Water Power Press, 2008.
[28]中华人民共和国住房和城乡建设部. 混凝土中钢筋检测技术规程: JGJ/T 152—2008[S]. 北京: 中国建筑工业出版社, 2008.
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Technical regulations for testing reinforcement in concrete: JGJ/T 152—2008[S]. Beijing: China Architecture & Building Press, 2008.

备注/Memo

备注/Memo:
收稿日期:2022-10-13修回日期:2024-03-24
基金项目:国家自然科学基金(11832013,51878350); 2021年交通运输行业重点科技项目(2021-MS1-002)
第一作者:朱海威(1990—), 男, 博士, 工程师, 主要从事海洋环境下钢筋混凝土结构耐久性研究.E-mail:zhuhaiwei@nuaa.edu.cn
通信作者:余红发(1964—), 男, 博士, 教授, 主要从事混凝土结构耐久性研究.E-mail:yuhongfa@nuaa.edu.cn
更新日期/Last Update: 2024-08-28