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本文提出一种考虑地震环境和场地条件模糊性的设计反应谱标定方法。该方法可分为二个步骤求解:1.运用模糊数学方法预测和评判地震环境和场地条件的模糊集;2.依据地震环境和场地条件的模糊集,运用模糊综合评判方法进一步求出设计反应谱的模糊向量。本方法考虑到与抗震设计新规范相协调,因此可以看作是按规范要求对设计反应谱标定方法的补充。本文提出的方法较易掌握,可以作为工程场地和中小城市地震影响小区划中确定设计反应谱的简化方法。
This paper presents a design response spectrum calibration method that considers the seismic environment and the ambiguity of site conditions. The method can be divided into two steps to solve: 1. Fuzzy mathematics method is used to predict and evaluate the fuzzy set of seismic environment and site conditions; 2. Based on the fuzzy set of seismic environment and site conditions, a fuzzy comprehensive evaluation method is used to further determine the design response. Spectral fuzzy vector. This method takes into account the coordination with the new seismic design specification and can therefore be regarded as a supplement to the design response spectrum calibration method according to the specification requirements. The method proposed in this paper is relatively easy to grasp and can be used as a simplified method to determine the design response spectrum for engineering sites and small and medium-sized cities affected by earthquakes.