沿海混凝土结构表层氯离子沉积规律的对比研究

杨海城; 谢静超; 郑智淼; 盖世博; 刘加平

doi:10.7643/ issn.1672-9242.2025.10.016

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (10) : 132-142. DOI: 10.7643/ issn.1672-9242.2025.10.016

环境试验与观测

沿海混凝土结构表层氯离子沉积规律的对比研究

杨海城¹, 谢静超^{1, *}, 郑智淼¹, 盖世博¹, 刘加平²

作者信息 +

Comparative Study on Chloride Ion Deposition Patterns in Surface Layers of Coastal Concrete Structures

YANG Haicheng¹, XIE Jingchao^{1, *}, ZHENG Zhimiao¹, GAI Shibo¹, LIU Jiaping²

Author information +

文章历史 +

摘要

目的沿海地区的建筑物易遭受氯离子侵蚀,针对我国南北海域近海混凝土结构表层氯离子沉积规律及其影响因素展开研究。方法采用文献调研、现场采样实测、数学回归分析方法对盐雾浓度、氯离子沉降率、表层氯离子沉积量进行数据收集及分析。结果根据文献调研获取的244个近海区域盐雾浓度及氯离子沉降率数据值,发现风速、气温、浪高、风浪周期与两者均呈正相关。风速、风浪高度的相关系数均大于0.7,二者与表层氯离子沉积量之间的比例关系相吻合。渤海及黄海北部区域的盐雾浓度、氯离子沉降率、表层氯离子沉积量平均值分别为38.07 μg/m³、34.61 mg/(m²·d)、0.18%,而南部海域对应的各均值约为北部海域的2.4~2.6倍。结论基于143个样品实测数据,探究了距海距离与表层氯离子沉积量之间的变化规律,构建了采样区域的混凝土表层氯离子沉积量距离-时变数学模型,为沿海地区建筑防腐蚀设计提供了数据支撑和参考依据。

Abstract

Since buildings in coastal areas are prone to chloride ion erosion, the work aims to study the deposition patterns of surface chloride ions in offshore concrete structures in the northern and southern seas of China and the affecting factors. Literature review, on-site sampling and actual measurement, and mathematical regression analysis were employed to collect and analyze data on salt spray concentration, chloride ion deposition rate, and surface chloride ion deposition amount. Based on 244 data values of salt spray concentration and chloride ion deposition rate in offshore areas obtained from the literature review, it was found that wind speed, air temperature, wave height, and wind-wave period were positively correlated with salt spray contraction and chloride ion deposition rate. The correlation coefficients of wind speed and wave height were both greater than 0.7, and their proportional relationship with surface chloride ion deposition amount was consistent. The average values of salt spray concentration, chloride ion deposition rate, and surface chloride ion deposition amount in the Bohai Sea and the northern part of the Yellow Sea were 38.07 μg/m³, 34.61 mg/(m²·d), and 0.18% respectively, while the corresponding average values in the southern seas were about 2.4 to 2.6 times those in the northern seas. Based on the measured data of 143 samples, the variation law between the distance from the sea and the surface chloride ion deposition amount is explored, and a distance-time-varying mathematical model of the surface chloride ion deposition amount in the concrete of the sampling area is constructed, providing data support and reference for the anti-corrosion design of buildings in coastal areas.

导出引用

杨海城, 谢静超, 郑智淼, 盖世博, 刘加平. 沿海混凝土结构表层氯离子沉积规律的对比研究[J]. 装备环境工程. 2025, 22(10): 132-142 https://doi.org/10.7643/ issn.1672-9242.2025.10.016

YANG Haicheng, XIE Jingchao, ZHENG Zhimiao, GAI Shibo, LIU Jiaping. Comparative Study on Chloride Ion Deposition Patterns in Surface Layers of Coastal Concrete Structures[J]. Equipment Environmental Engineering. 2025, 22(10): 132-142 https://doi.org/10.7643/ issn.1672-9242.2025.10.016

中图分类号： TU14

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