【摘要】：框架結(jié)構(gòu)抗地震倒塌性能的定量評估近年來受到廣泛關(guān)注,迫切需要建立一套抗倒塌性能評估指標,而且需同時具備實用性和可行性。該文從我國抗震規(guī)范的延性設(shè)計要求出發(fā),分別考慮柱、梁抗彎承載力比和柱彎曲屈服對應(yīng)的剪力與柱受剪承載力比等參數(shù)對結(jié)構(gòu)抗倒塌性能的影響,并分析了二者對結(jié)構(gòu)抗倒塌性能影響的相關(guān)性。結(jié)果表明:柱、梁抗彎承載力比對結(jié)構(gòu)抗倒塌性能影響顯著,柱彎曲屈服對應(yīng)的剪力與柱受剪承載力比對結(jié)構(gòu)抗倒塌性能也有一定的影響,且二者對結(jié)構(gòu)抗倒塌性能的影響存在相關(guān)性。通過對這兩個結(jié)構(gòu)參數(shù)進行不同的調(diào)整組合,考察結(jié)構(gòu)的抗倒塌性能,進一步建立了簡化的抗倒塌性能評估指標,為框架結(jié)構(gòu)抗倒塌性能的定量評估提供參考。
[Abstract]:In recent years, the quantitative evaluation of seismic collapse resistance of frame structures has received extensive attention, so it is urgent to establish a set of evaluation indexes for anti-collapse performance, and it is necessary to have practicability and feasibility at the same time. Based on the ductile design requirements of seismic code in China, the effects of shear capacity ratio of column, beam bending capacity ratio and shear capacity ratio of column bending yield on collapse resistance of structures are considered in this paper. The correlation between the effects of the two on the collapse resistance of the structure is analyzed. The results show that the ratio of bending bearing capacity of column to beam has a significant effect on the collapse resistance of the structure, and the ratio of shear capacity to shear capacity of column bending yield also has a certain influence on the collapse resistance of the structure. And the influence of the two on the collapse resistance of the structure is correlated. Through different adjustment and combination of the two structural parameters, the anti-collapse performance of the structure is investigated, and a simplified evaluation index of anti-collapse performance is further established, which provides a reference for the quantitative evaluation of the anti-collapse performance of the frame structure.
【作者單位】： 西安建筑科技大學土木工程學院;
【基金】：國家自然科學基金項目(51278402,51078305)
【分類號】：TU375.4;TU312.3

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