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本文在承认结构设计环境荷载基准期的确定是合理的基础上，通过引进结构设计使用期和结构评估再服役期，提出了以评估再服役期超越评估荷载的概率应等于设计使用期超越设计荷载的概率为原则（类比地）确定评估荷载基准期的方法２对于直接采用确定性或随机的环境荷载进行结构安全程度或可靠度评估的情况，分别导出了相应的评估荷载与设计荷载的关系；最后对建筑结构评估用风荷载和地震荷载的确定以及渤海８号平白评估用海洋环境荷载进行了具体的讨论，并得出了相应的结果。
This paper recognizes that the design of environmental load reference period of structural design is reasonable. Based on the introduction of structural design service life and structural evaluation and re-serving period, this paper proposes that the probability of overtaking the assessment load during the evaluation of the re-commissioning period should be equal to the design service life beyond the design load. The probability is the principle (analogously) to determine the baseline period of the assessment of load method 2 For the direct use of deterministic or random environmental loads to assess the degree of structural safety or reliability, the corresponding relationship between the assessment load and the design load is derived; Finally, the determination of wind loads and seismic loads for the assessment of building structures and the marine environmental loads for assessment of the Bohai Sea Level 8 were discussed in detail, and the corresponding results were obtained.