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中文摘要：
应用模糊数学原理，将我国现行建筑抗震设计规范（GB50011-2001）划分场地类别的依据模糊化，用正态分布作为等效剪切波速与覆盖层厚度的隶属函数，对不同场地条件特征周期值进行模糊综合评判，给出了高层建筑结构地震作用计算步骤。结果表明，模糊综合评判方法使得建筑抗震设计中的设计反应谱更符合实际，高层建筑结构地震作用的计算更为准确。
英文摘要：
Using the normal distribution as the member functions of equivalent shear-wave speed and overlay thickness, distinguishing the site sort in current Chinese Code for seismic design of buildings（ GB 50011-2001 ）becomes fuzzy by applying fuzzy mathematics principle. A fuzzy comprehensive evaluation method to determine the characteristic site period in different site conditions is put forward, trod the steps to calculate earthquake action on tall building structures are given. It is shown that the fuzzy comprehensive evaluation method makes the design response spectrum more conformable to the practice in seismic building design, and makes the calculation of earthquake action on tall building structures more exact.
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