Subway‐induced floor vibration predictions in super high‐rise multi‐tower building located on over‐depot based on one‐dimensional impedance model

The Structural Design of Tall and Special Buildings Pub Date : 2024-05-03 DOI:10.1002/tal.2126

Can Mei, Dayang Wang, Yongshan Zhang

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Abstract

SummaryThe regular operation of the subway negatively impacts the occupants of super high‐rise multi‐tower buildings located on over‐depot (MBLO), causing undesirable vibrations. To save engineers time and computational cost, an improved one‐dimensional impedance model of super high‐rise MBLO is established to predict undesirable vibration in the design phase and devise measures to enhance human comfort. The stiffness factor of the thick plate of a large chassis is introduced, and the impedance relationships of coupled beam and floor based on the equivalence of mass and bending stiffness are considered for an improved one‐dimensional impedance model. The vibration response of multi‐story buildings and super high‐rise MBLO is predicted by an improved one‐dimensional impedance model and compared with field measurements and experimental results, respectively. The results show that the vibration transmission law of super high‐rise MBLO can be more accurately predicted when the stiffness factor of thick plates and the impedance relationships of coupled beam and floor are adopted in an improved one‐dimensional impedance model of super high‐rise MBLO.

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基于一维阻抗模型的超高层多塔楼地面振动预测

摘要地铁的正常运行会对位于超深基坑上的超高层多塔建筑（MBLO）的居住者造成负面影响，引起不良振动。为了节省工程师的时间和计算成本，本文建立了超高层 MBLO 的改进型一维阻抗模型，以便在设计阶段预测不良振动，并制定提高人体舒适度的措施。在改进的一维阻抗模型中，引入了大型底盘厚板的刚度系数，并考虑了基于质量和弯曲刚度等效的耦合梁和楼板的阻抗关系。通过改进的一维阻抗模型预测了多层建筑和超高层 MBLO 的振动响应，并分别与现场测量和实验结果进行了比较。结果表明，在改进的超高层 MBLO 一维阻抗模型中采用厚板的刚度系数以及耦合梁和楼板的阻抗关系，可以更准确地预测超高层 MBLO 的振动传递规律。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Structural Design of Tall and Special Buildings

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