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建筑结构可靠度指的是结构在规定的时间内,在规定的条件下,完成预定功能的概率。我们可以用P1进行表示,反之建筑结构若不能完成预定功能,将这一概率称之为失效概率,用P2进行表示,因此可以得出P1+P2=1。因为现在很难得出实际随机变量的参数和推断结构可靠度概率分布模型,因此在实际应用中直接应用积分法对P2开展计算也未必可以得出需要的计算精度。因此就那些大规模的建筑工程结构设计而言,积分方法较不适用。基于此,本文将着重分析探讨建筑结构设计可靠度的影响因素与比较,以期能为以后的实际工作起到一定的借鉴作用。
The reliability of building structure refers to the probability that the structure will perform its intended function under the prescribed conditions within a specified period of time. We can use P1 to represent, on the contrary, if the building structure can not fulfill the predetermined function, we call this probability “failure probability”, which is represented by P2, so we can get P1 + P2 = 1. Because it is difficult to draw the actual random variable parameters and deduce the probability distribution model of the reliability of structure, it is not always possible to calculate the required accuracy when applying the integral method directly to the calculation of P2 in practical applications. Therefore, for those large-scale architectural design, the integral method is not suitable. Based on this, this article will focus on analysis and discussion of the factors affecting the reliability of building structure design and comparison, with a view to be able to play a certain role in reference for future practical work.