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主管单位 中华人民共和国
工业和信息化部
主办单位 哈尔滨工业大学 主编 李隆球 国际刊号ISSN 0367-6234 国内刊号CN 23-1235/T

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引用本文:李镜培,李林,陈浩华,邵伟,岳著文.腐蚀环境中混凝土桩基耐久性研究进展[J].哈尔滨工业大学学报,2017,49(12):1.DOI:10.11918/j.issn.0367-6234.201708027
LI Jingpei,LI Lin,CHEN Haohua,SHAO Wei,YUE Zhuwen.Advances in concrete pile durability in corrosive environment[J].Journal of Harbin Institute of Technology,2017,49(12):1.DOI:10.11918/j.issn.0367-6234.201708027
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腐蚀环境中混凝土桩基耐久性研究进展
李镜培1,2,李林1,2,陈浩华1,2,邵伟1,2,岳著文1,2
(1.岩土及地下工程教育部重点实验室(同济大学),上海 200092; 2. 同济大学 地下建筑与工程系,上海 200092)
摘要:
腐蚀环境中地下混凝土结构的耐久性问题一直是国内外研究的热点问题之一.针对海洋和近海氯盐侵蚀环境与内陆盐湖和盐碱地硫酸盐侵蚀环境中地下混凝土结构的耐久性问题,分别从混凝土侵蚀机理、侵蚀性离子扩散机制、钢筋锈蚀机理、混凝土强度和刚度损伤等几个方面总结和归纳了当前国内外的研究现状,探讨了氯盐侵蚀环境和硫酸盐侵蚀环境中地下混凝土结构的损伤特性和劣化机制.在此基础上,考虑PHC预制管桩和现浇钻孔灌注桩的制作养护工艺,分别论述了海工环境中水平受荷PHC管桩和盐渍土环境中竖向受荷钻孔灌注桩的侵蚀劣化机理,进而结合海工环境中水平受荷PHC管桩和盐渍土环境中竖向受荷钻孔灌注桩的承载机制,探讨了各自承载特性的退化规律,总结了海工环境中水平受荷PHC管桩和盐渍土环境中竖向受荷钻孔灌注桩寿命的预测方法.最后,基于当前腐蚀环境中钢筋混凝土桩基耐久性研究现状,笔者根据自己的见解提出了今后的研究思路和方向,以期为腐蚀环境中和复杂应力条件下钢筋混凝土桩基的耐久性研究以及今后相应规范的制定提供一定参考.
关键词:  腐蚀环境  钢筋混凝土  桩基  氯离子  硫酸盐  承载特性
DOI:10.11918/j.issn.0367-6234.201708027
分类号:TU473
文献标识码:A
基金项目:国家自然科学基金(1,0)
Advances in concrete pile durability in corrosive environment
LI Jingpei1,2,LI Lin1,2,CHEN Haohua1,2,SHAO Wei1,2,YUE Zhuwen1,2
(1.Key Laboratory of Geotechnical and Underground Engineering(Tongji University), Ministry of Education, Shanghai 200092, China;2.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China.)
Abstract:
The durability of underground concrete structures in corrosive environments is one of the hottest issues. The current research works on the durability of underground concrete structures in marine and offshore chlorine salt erosion environment and saline lake and inland saline sulfate environment were summarized based on concrete corrosion mechanism, erosive ion diffusion mechanism, rebar corrosion mechanism, concrete strength and stiffness damage and other aspects, respectively, and the damage characteristics and degradation mechanisms of underground concrete structures under chloride and sulfate corrosion environment were discussed. Considering the production technology of the PHC pipe pile and the bored pile, the deterioration mechanism of horizontally loaded PHC pipe pile in marine environment and vertically loaded bored pile in saline soil environment were discussed, respectively. The degradation laws of their load-bearing characteristic were investigated by considering the loading mechanism of bored piles and PHC pipe piles, and the methods for predicting the service life of horizontally loaded PHC pipe pile in marine environment and vertically loaded bored pile in saline soil environment were proposed. Finally, based on the current study, the further research ideas and directions were proposed to provide references for the durability research of reinforced concrete pile in corrosive environment and complicated stress conditions, and as well as the formulation of relevant standards.
Key words:  corrosive environments  reinforced concrete  pile foundation  chloride ion  sulfate  bearing performance

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