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ENERGY-BASED APPROACH OF STATIC PUSHOVER ANALYSIS

机译:基于能量的静态推算分析方法

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This paper presents an energy approach of Static Pushover Analysis method. It proposes the replacement of roof displacement that is used in classic "base shear roof displacement" pushover curve with an equivalent energy-based displacement uen, calculated as a function of the work of external lateral forces acting on the structure. Consistent analytical formulas are provided for the calculation of work of lateral forces acting on the floors of an N-storey frame with rigid floor diaphragms and of the equivalent energy-based displacement. The proposed methodology is applied on characteristic multi-storey concrete frames (moment frame, wall-frame system, coupled shear walls) which are analyzed using Pushover Analysis. Results indicated that classic "base shear roof displacement" pushover curve could lead to incorrect estimation of the amount of seismic energy the structure is able to dissipate, whereas the proposed energy-based displacement leads to an energy consistent equivalent Single Degree of Freedom (ESDOF) system.
机译:本文提出了一种静态推覆分析方法的能量方法。它提议用等效的基于能量的位移量来代替经典的“基础剪力屋顶位移”推覆曲线中使用的屋顶位移,该位移量是根据作用在结构上的外部侧向力的函数来计算的。提供了一致的分析公式,用于计算作用在具有刚性地板隔板的N层框架的地板上的横向力的功和等效的基于能量的位移。所提出的方法适用于典型的多层混凝土框架(弯矩框架,墙框架系统,剪力墙),并使用Pushover分析进行了分析。结果表明,经典的“基础剪力屋顶位移”推翻曲线可能会导致对结构能够消散的地震能量的估计不正确,而建议的基于能量的位移会导致能量一致的等效单自由度(ESDOF)系统。

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