RC框架结构抗地震倒塌性能评估的简化方法
发布时间：2019-06-10 00:32
【摘要】：框架结构抗地震倒塌性能的定量评估近年来受到广泛关注,迫切需要建立一套抗倒塌性能评估指标,而且需同时具备实用性和可行性。该文从我国抗震规范的延性设计要求出发,分别考虑柱、梁抗弯承载力比和柱弯曲屈服对应的剪力与柱受剪承载力比等参数对结构抗倒塌性能的影响,并分析了二者对结构抗倒塌性能影响的相关性。结果表明:柱、梁抗弯承载力比对结构抗倒塌性能影响显著,柱弯曲屈服对应的剪力与柱受剪承载力比对结构抗倒塌性能也有一定的影响,且二者对结构抗倒塌性能的影响存在相关性。通过对这两个结构参数进行不同的调整组合,考察结构的抗倒塌性能,进一步建立了简化的抗倒塌性能评估指标,为框架结构抗倒塌性能的定量评估提供参考。
[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.
【作者单位】： 西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51278402,51078305)
【分类号】：TU375.4;TU312.3
[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.
【作者单位】： 西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51278402,51078305)
【分类号】：TU375.4;TU312.3
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