在役高桩码头横梁剩余寿命预测

Life prediction of prediction beams of high-pile wharf in service life

从影响高桩码头结构抗力变化的氯离子、混凝土碳化、混凝土强度等随时间变化的主要因素入手,考虑了材料本身的不确定性。综合分析后,将横梁构件钢筋混凝土锈蚀时间作为变量,建立了横梁抗力随时间变化的模型,计算了该港区的码头横梁可靠指标,并和规范要求的可靠指标联合求解,得出了其使用年限。结果表明符合该工程实际。研究结果可为高桩码头结构寿命预测提供科学的依据。

This paper starts with the impact resistance of high-pile wharf structure′s changes,including chloride,carbonation of concrete,concrete strength and other factors which changed over time,and considers the uncertainty of the material itself. After a comprehensive analysis, the model of beam resistance changes over time was established and taken the cross member reinforced concrete corrosion time as a variable. It calculated the reliability index of high-pile wharf beams,and made a solution combined with the reliability index required by codes to obtain the service life. The results show that meet engineering practice. The research results can provide a scientific basis for life prediction of high-pile wharf structure.