Pushover analysis of structures subjected to combined actions of earthquake and wind
Pushover analysis of structures subjected to combined actions of earthquake and wind
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DOI：
10.1016/j.engstruct.2020.111034
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发表时间：
2020-10
影响因子：
5.5
通讯作者：
Zijun Wang;P. Martinez-Vazquez;Boming Zhao
中科院分区：
文献类型：
--
作者：
Zijun Wang;P. Martinez-Vazquez;Boming Zhao
本文提出了一个框架来研究建筑物在地震和风联合作用下的结构性能。本研究使用推覆分析来确定低层和中层混凝土结构的强度能力，以与中国抗震设计规范中的强度进行比较。该分析解决了土壤结构的相互作用，通过审查的固定基础和柔性基础的条件下，三种土壤类型之间的密集和柔软。参数研究涵盖平均值介于0.5 m/s和20 m/s之间的微气象风。模拟的多荷载情景诱导延性水平从1到6，共288个案例研究。建议的框架表明，考虑地震和风的同时影响，可以修改性能水平用于设计，通过提高延性的要求。这表明，根据目前的设计建议，位于地震多发区的结构容易受到意外程度的损害。
This paper puts forward a framework to investigate the structural performance of buildings subject to the combined action of earthquakes and wind. The study uses a pushover analysis to determine strength capacities of low- and medium-rise concrete structures to compare versus their strength, as inferred from the Chinese code for seismic design. The analysis addresses soil-structure interactions through the scrutiny of fixed-base and flexible-base conditions of three soil types ranging between dense and soft. The parametric study covers micro meteorological winds whose mean value spans between 0.5 m/s and 20 m/s. The simulated multi-load scenarios induce ductility levels going from 1 to 6 to totalise 288 case studies. The proposed framework reveals that consideration of earthquake and wind simultaneous effects could modify performance levels used for design through enhancing ductility demands. This evidences that, under current design recommendations, structures located in earthquake prone areas susceptible to unexpected levels of damage.