受载构件在人工气候模拟环境下的承载力研究

Research on bearing capacity of loaded component under the artificial climate environment

在设定的人工气候氯盐腐蚀的环境下,对同一水灰比的钢筋混凝土梁进行了腐蚀时间不同的试验研究,分析了氯盐腐蚀后的钢筋混凝土梁的承载能力及钢筋锈蚀率。结论表明,同一水灰比的混凝土梁在不同腐蚀时间下的承载力与氯离子在混凝土中的侵蚀深度及其对钢筋腐蚀的程度密切相关:氯离子侵蚀越深,导致钢筋锈蚀越严重,承载力下降越明显。

Under the preset chloride corrosion environment by artificial climate,the experiment on chloride contaminated RC beams with same water-cement ratio at different time was studied and the bearing capacity and corrosion ratio of the steel after being corroded by chloride were analyzed.The results of the experiment indicate that RC beams with the same water-cement ratio displayed different bearing capacity when they were corroded at different time,which is closely related with corrosion depth of chloride in concrete and its corrosion in steel.The deeper the chloride contaminated,the more seriously the steel corroded,which makes the bearing capacity decreased significantly.