考虑土-结构相互作用的基于性能设计的高层混凝土结构的抗震性能和耗散塑性能

IF 1 Q4 ENGINEERING, CIVIL
H. Mortezaie, Freydoon Rezaie
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引用次数: 2

摘要

由于结构和基础都建在土壤上,土壤是地震振动传递到结构上的主要平台,对结构在地震中的响应和行为有着显著的影响。在本研究中,最近引入的基于性能的塑性设计(PBPD)及其改进的基于性能塑性设计方法(MPBPD)进行了地震评估,其中考虑了土壤和结构的相互作用效应。为了进行评估,根据22次远场地震记录的时程,采用MPBPD方法和常规PBPD方法设计并分析了一个20层混凝土结构。本研究采用圆锥模型对土壤和地基进行建模。通过在OpenSees软件中构建和开发的一个20层高层结构的详细三维有限元模型,试图考虑该结构更真实的行为。具有结构最大响应的六个相关参数的结果表明,与传统的PBPD方法相比,考虑SSI效应的MPBPD方法具有效率和性能。结果表明,在MPBPD设计方法中,与PBPD方法相比,最大位移、加速度、层间位移和剪力都有所下降,从而使结构中的能量分布更好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seismic Behavior and Dissipated Plastic Energy of Performance-Based-Designed High-Rise Concrete Structures with Considering Soil–Structure Interaction Effect
Since the structure and foundation are built on soil, the soil is the major platform by which seismic vibrations are transmitted to the structure, and has noticeable effects on the response and behavior of structure during earthquakes. In this research, the recently introduced Performance-based plastic design (PBPD) and its modified Performance-based plastic design (MPBPD) method in which soil and structure interaction effect has been considered underwent the seismic evaluation. In order to do evaluation, a twenty-floor concrete structure with MPBPD method and conventional PBPD was designed and analyzed in accordance with the time history of the 22 far-field quake records. In this study, cone model is employed for modeling the soil and foundation. With a detailed three-dimensional finite element model of a twenty-story high-rise structure constructed and exploited in the OpenSees software, it is attempted to consider a more realistic behavior of the structure. The results of six related parameters with the maximum response of the structure demonstrate the efficiency and performance of the MPBPD method for the purpose of considering the SSI effect, compared with the conventional method of PBPD. The Results show that, in the MPBPD design method, maximum displacement, acceleration, inter-story drift and shear force dropped leading to a better distribution of energy in the structure compared to the PBPD method.
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来源期刊
CiteScore
1.30
自引率
60.00%
发文量
0
审稿时长
47 weeks
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