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首页> 外文期刊>The Structural Design of Tall and Special Buildings >A practical numerical substructure method for seismic nonlinear analysis of tall building structures
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A practical numerical substructure method for seismic nonlinear analysis of tall building structures

机译：高层建筑地震非线性分析的实用数值子结构方法

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摘要

It is a challenging task to perform large-scale nonlinear analysis for complicated tall building structures due to the trade-off between computational efficiency and numerical accuracy. Existing methods cannot satisfactorily meet the demands of engineering practices because they require predetermining local yielded regions or adaptively refining models during the analysis. This paper presents a modified numerical substructure method (NSM) in which the difficult task is divided into seismic analysis of a linear elastic "master" structure and static nonlinear analyses of a limited quantity of substructures for local yielded regions. A "nonlinear force corrector" is calculated in the substructure and applied on the master structure to consider the contribution of the yielded region's nonlinearity. A 32-story reinforced concrete frame shear-wall building under earthquake is analyzed to verify the NSM and investigate its accuracy and efficiency. In addition, a reinforced concrete frame shake-table test is simulated using the modified NSM, and local damage behaviors and improved accuracy can be obtained using the refined substructure model.
机译：由于计算效率和数值精度之间存在折衷关系，因此对于复杂的高层建筑结构进行大规模非线性分析是一项艰巨的任务。现有方法不能令人满意地满足工程实践的要求，因为它们需要在分析过程中预先确定局部屈服区域或自适应地完善模型。本文提出了一种改进的数值子结构方法（NSM），其中困难的任务分为线性弹性“主”结构的地震分析和局部屈服区域有限数量的子结构的静态非线性分析。在子结构中计算“非线性力校正器”，并将其应用到主结构中，以考虑屈服区域非线性的影响。对一栋32层的钢筋混凝土框架剪力墙房屋进行地震分析，以验证NSM并研究其准确性和效率。此外，使用改进的NSM模拟钢筋混凝土框架振动台试验，并使用改进的子结构模型可以获得局部损伤行为和提高的精度。

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