不同环境条件下考虑荷载影响的氯离子扩散模型

被引:26
作者
王元战 [1 ]
田双珠 [2 ]
王军 [3 ]
那达慕 [1 ]
机构
[1] 天津大学建筑工程学院港口与海洋工程天津市(教育部)重点实验室
[2] 交通部天津水运工程科学研究所水工构造物检测诊断与加固技术交通行业重点实验室
[3] 中交第四航务工程勘察设计院
关键词
荷载影响系数; 氯离子扩散模型; 钢筋混凝土构件;
D O I
暂无
中图分类号
U657.3 [港口水工建筑物的损害和预防];
学科分类号
0814 ; 081505 ; 082401 ;
摘要
钢筋锈蚀是造成钢筋混凝土构件耐久性破坏的重要因素之一,氯离子侵蚀是海洋环境下钢筋锈蚀的首要因素。根据相关文献给出的不同海洋环境、不同荷载水平作用下混凝土中氯离子扩散的实验数据,通过拟合给出氯离子扩散荷载影响系数与构件应力状态之间的关系式及混凝土表面氯离子浓度随时间变化的统计公式,建立了考虑荷载影响的氯离子扩散模型。多组现场实测数据检验表明,建立的考虑荷载影响的氯离子扩散模型是合理的,具有较好的适用性与实用性。
引用
收藏
页码:125 / 131
页数:7
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