加装摩擦阻尼器的钢抗弯矩框架地震易损性评估

SSRG international journal of civil engineering Pub Date : 2023-09-30 DOI:10.14445/23488352/ijce-v10i9p104

Swapnil B Kharmale, Chetan S Patil, Veeranagouda B Patil

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引用次数: 0

摘要

本研究评估了采用最新开发的基于性能的塑性设计(PBPD)方法设计并配备摩擦阻尼器的高层钢抗矩框架(SMRF)的地震倒塌可能性。根据PBPD方法设计的3种不同位移延性比的21层SMRF安装了附加摩擦阻尼器，以克服较高层间高度集中且不均匀分布的层间漂移。在一组选定的生命运动记录下，对三种不同的SMRF延性设计进行了多记录增量动力分析(MIDA)。这些有或没有附加摩擦阻尼器的SMRF的PBPD设计的地震易损性用于确定地震危害的最佳范围，以最大限度地减少固体地面运动下损坏的总可能性。结果表明，摩擦阻尼器对于降低采用PBPD方法设计的高层SMRF地震倒塌概率非常有效。

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Seismic Vulnerability Assessment of Steel Moment Resisting Frame Equipped with Friction Damper

This research evaluates the likelihood of seismic collapse for high-rise Steel Moment Resisting Frames (SMRF)
designed with a recently developed Performance-Based Plastic Design (PBPD) approach and equipped with friction dampers.
A 21-storey SMRF designed according to the PBPD method for three different displacement ductility ratios is equipped with
supplementary friction dampers to overcome largely concentrated and non-uniformly distributed inter-storey drifts at higher
storeys. Multi-record Incremental Dynamic Analysis (MIDA) of three different ductility designs of SMRF with and without
supplementary friction dampers is performed under the suite of selected vital motion records. The seismic fragility of these
PBPD designs of SMRF with and without additional friction damper is used to identify the optimum range of the seismic
hazards to minimize the total likelihood of damages under solid ground motion. Results show that friction dampers are highly
effective in reducing the probability of high-rise SMRF seismic collapse designed with the PBPD approach.

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来源期刊

SSRG international journal of civil engineering

CiteScore

0.20

自引率

0.00%

发文量