建筑结构中抗震分析模型的优化研究

大多数建筑结构由梁、柱、支撑、剪力墙、地基和楼板等主要结构组成。一般而言,楼板对建筑结构的抗震性能可以忽略不计,所以进行建筑结构分析的模型是无楼板的。因此,楼板被刚性隔板代替,以提高分析效率。本文提出的建筑结构抗震分析解析模型考虑了楼板抗弯刚度,该模型采用超级单元、刚性隔板和子结构技术来减少自由度。通过实例分析,验证了该模型在多层建筑结构抗震分析中的有效性和准确性。且此模型能够显著减少计算量,提高分析效率,振动周期和响应时间等分析结果的精度与精化模型的结果非常接近,说明该模型的提出是合理的。

Optimization Research on a Seismic Analysis Model of Building Structures

Most building structures consist of main structures such as beams, columns, braces, shear walls, foundation, and floors. Generally, the seismic performance of the floor slab to the building structure is negligible; therefore, analysis models of building structures do not consider floors, and the floor slab is replaced by a rigid baffle to increase the analysis efficiency. The seismic analysis model of building structures proposed in this paper considers the bending stiffness of the floor. The model uses super element, rigid baffle, and substructure technique to reduce the degree of freedom. Through an example analysis, the validity and accuracy of the model in the seismic analysis of multi-story building structure are verified. The proposed model can significantly reduce computational complexity and improve analysis efficiency. Moreover, the accuracy of the analysis results, such as the vibration cycle and response time, is very close to the result of the refined model, which substantiates the efficiency of the proposed model.