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（1 中國建筑科學(xué)研究院，北京 100013，2 中國核電工程有限公司鄭州分公司，鄭州 450052）

[摘要]  概述了冗余度的研究現(xiàn)狀，并基于已有研究成果及能力需求譜理論，提出了新的定量評(píng)估結(jié)構(gòu)冗余度指標(biāo)，給出了該指標(biāo)的詳細(xì)推導(dǎo)過程和計(jì)算方法。案例分析表明，該冗余度指標(biāo)合理、有效，能夠準(zhǔn)確反映結(jié)構(gòu)體系的冗余度變化，可作為判別結(jié)構(gòu)關(guān)鍵構(gòu)件的工具。

[關(guān)鍵詞]  冗余度；能力需求譜；推覆分析；抗倒塌

中圖分類號(hào)：TU312       文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：

作者簡介：左瓊，博士，工程師，Email:qiongzuo@gmail.com。

Measures of structural redundancy in reinforced concrete structures

Zuo Qiong¹, Xu Huiye², Luo Kaihai¹

(1 China Academy of Building Research, Beijing 100013, China;

2 China Nuclear Power Engineering Co., Ltd., Zhengzhou Branch, Zhengzhou 450052, China)

Abstract: The research on redundancy index is reviewed. Based on the results of redundancy and the capacity-demand spectral theory, a new quantitative assessment of structural redundancy is proposed and the derivation process of the formulas and calculation method is described in detail. Case analysis shows that the redundancy index, which is proved reasonable and effective, can accurately calculate the structural redundancy of the system and can determine the structural key component of the system as a measure.

Keywords: redundancy; capacity-demand spectra; pushover analysis; seismic collapse resistance

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