Considering the fuzziness and the randomness of the truss structures at the same time, using the entropy concept, pure fuzzy dynamic structures are given through transforming the probability to fuzziness.

• 摘要考虑桁架结构同时具有模糊性和随机性，利用模糊熵和概率熵的概念，将结构的随机性和模糊性统一为结构的模糊性，将模糊随机结构转化为纯粹的模糊结构。