environment hazards meaning in English

环境危害

Abstract : concepts of probability importance and probability sensitivity of sectional constraints of rc frame structure are put forward and studied in this paper , and their calculation methods are given based on the failure correlation and the achievements on reliability of structural system under minor and strong environment hazard respectively . the conclusions of this paper provide a scientific basis for the disaster - resistant maintenance strategy before and after earthquakes , enhancing the reliability of decision - making for the strengthening of existing structure
文摘:探讨了钢筋混凝土框架结构截面约束的概率重要度及概率灵敏度概念，利用失效相关性及结构体系可靠度方面的研究成果，给出了钢筋混凝土框架结构中各个截面效应约束分别在弱灾害和强灾害环境下的概率灵敏度与概率重要度的计算方法，所得结论可以为在役结构在地震前的预防性维修加固决策及震后结构的维修加固决策提供科学依据，从而提高了在役结构加固决策的可靠性