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在按试验资料建立了结构模型的基础上,本文根据地震干扰下结构相对层位移最大延性比符合极值Ⅰ型分布的假定,利用人工地震波统计计算了结构最薄弱层在各类场地土和各等级地震烈度作用下的动力可靠性。并在确定了地震发生危险性的数学模型的基础上,应用本文建立的总安全概率的公式计算求得了地震干扰下“板-柱”轻板框架建筑在规定年限内安全使用的概率。为结构的抗震概率设计奠定了基础。
On the basis of establishing the structural model according to the test data, this paper used the artificial seismic wave to statistically calculate the weakest layer of the structure in all kinds of site soils and each site according to the assumption that the maximum ductility ratio of the displacement of the structure’s relative layer under the seismic disturbance conforms to the I-type distribution. Dynamic Reliability under Graded Seismic Intensity. On the basis of determining the mathematical model of the risk of earthquakes, the probability of safe use of “board-pillar” light-board frame buildings under seismic disturbance within a specified period of time was calculated by applying the formula for the total safety probability established in this paper. It lays the foundation for the design of the seismic design of the structure.