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引言在确定地震力时,若问到应有多少屋面雪荷载需要包括在恒载内,有时会得到如下的回答:“除非能确保在冬季不会发生地震,否则在确定地震力时,设计的屋面雪荷载应百分之百地包括在恒载内。”如果这种说法被某些建筑官员认为是正确合理的话,这对结构工程师就带来严重的问题。按统一建筑规范(UBC)要求,房屋的侧力应为与结构全部重量直接成正比的惯性力。在轻型的低层房屋中,设计的屋面雪荷载就成为结构重量中的很重要的部分,在中等和严重降雪地区,经常会超过屋面
Introduction When it comes to determining seismic forces, asking how many roof snow loads should be included in the dead load sometimes gives the following answer: “Unless it is guaranteed that no earthquake will occur during the winter, the design Of the roof snow load should be included in the dead load 100%. ”" If this statement is some building officials think is correct and reasonable, it is a serious problem for structural engineers. According to UBC, the side force of the house should be directly proportional to the total weight of the structure. In light, low-rise houses, the designed roof snow load becomes a significant part of the structural weight, often exceeding roofing in moderate and severe snowfalls