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在露天作业的起重机,风载荷是一个不可忽视的外载荷。目前普遍采用的风载荷计算公式:F=APC_f(1)式中:F——作用在起重机的构件或整体(包括起吊物品)上的风载荷(公斤);P——计算风压值(公斤/米~2);C_f——所计算结构件在迎风风向上的风载体形系数;A——结构件在迎风一侧的可见杆件的投影面积(米~2)。目前在国外有较多的国家对建筑结构物和起重机结构件受风载荷的作用效果都有试验研究成果。而且制订了计算标准或规范。随着工业建设的发展,我国也已开始制订起重机的设计规范,为此也有一些科研单位和
In open-air cranes, the wind load is an unignorable external load. Currently used wind load calculation formula: F = APC_f (1) Where: F - acting on the crane components or the whole (including lifting objects) on the wind load (kg); P-- calculate the value of wind pressure / M ~ 2); C_f - wind load form factor of the calculated structure in the windward direction; A - projected area (m ~ 2) of the visible rod member on the windward side of the structural member. At present, there are many countries in the foreign countries on the impact of wind loads on the structure of buildings and crane structures have experimental results. And developed a calculation standard or norms. With the development of industrial construction, China has also begun to develop the design specifications of cranes, for which there are some scientific research units and