Comparative Analysis of Seismic Performance Indices Based on Stiffness Degradation for Reinforced Concrete Structures

管民生; 杜宏彪; 崔杰

doi:10.13409/j.cnki.jdpme.2017.03.004

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Comparative Analysis of Seismic Performance Indices Based on Stiffness Degradation for Reinforced Concrete Structures

更新时间：2025-12-11

- Comparative Analysis of Seismic Performance Indices Based on Stiffness Degradation for Reinforced Concrete Structures
- Vol. 37, Issue 3, Pages: 354-361(2017)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2017.03.004
  CLC： U352.11;TU375
- Published：2017
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[1]管民生,杜宏彪,崔杰.基于刚度退化的钢筋混凝土结构抗震性能指标对比分析[J].防灾减灾工程学报,2017,37(03):354-361.

管民生, 杜宏彪, 崔杰. Comparative Analysis of Seismic Performance Indices Based on Stiffness Degradation for Reinforced Concrete Structures[J]. 2017, 37(3): 354-361.
[1]管民生,杜宏彪,崔杰.基于刚度退化的钢筋混凝土结构抗震性能指标对比分析[J].防灾减灾工程学报,2017,37(03):354-361. DOI： 10.13409/j.cnki.jdpme.2017.03.004.

管民生, 杜宏彪, 崔杰. Comparative Analysis of Seismic Performance Indices Based on Stiffness Degradation for Reinforced Concrete Structures[J]. 2017, 37(3): 354-361. DOI： 10.13409/j.cnki.jdpme.2017.03.004.

摘要

地震作用下

钢筋混凝土结构的损伤程度可由刚度退化参数量化。基于纤维模型建立了3层钢筋混凝土框架结构有限元模型

分别进行了3种水平侧向加载模式的静力弹塑性分析和弹塑性动力时程分析。依据结构耗能分析

对比了作者提出的刚度退化性能指标Dperformance与Kunnath和Jenne指标DKJ评价结果的差异

并采用Dperformance性能指标对结构楼层在不同地震水准下的破坏程度进行了定量评价。研究表明

Dperformance性能指标对结构水平侧向加载模式不敏感

并能判别结构各楼层的损伤情况

从而确定结构薄弱层的位置

能合理、可靠地评估结构在地震作用下的性能水平。

Abstract

Reinforced concrete structures are likely to suffer damage when subjected to earthquakes.In this paper

a new stiffness-based damage index proposed previously by some of authors was compared with Kunnath and Jenne index for their applicability in seismic damage evaluation.A fiber model for three-storey reinforced concrete frame structure designed according to the current seismic codes was established.Pushover analyses with three lateral load patterns and the dynamic time histories for typical ground motions of varying intensities were performed on the structure.According to the results of structural energy dissipation

the difference in the estimation of structural damage states between the two examined indicators was studied.Moreover

local storey damage extent of the reinforced concrete structure subjected to varying ground motion intensities was assessed by adopting the proposed damage index.The results show that the proposed damage index is not sensitive to the lateral load patterns for pushover analysis.As a result

the storey and the overall damage of the structure can be quantified by using the abovementioned damage index.And thus the weak storey can also be found.The proposed damage index demonstrates a rational way to predict the extent of damage to structures under an earthquake.

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references

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