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（1 同濟(jì)大學(xué), 上海 200092; 2 南陽(yáng)師范學(xué)院，南陽(yáng) 473000）

［摘要］以1∶4縮尺的6層再生混凝土空間框架結(jié)構(gòu)模型為研究對(duì)象，完成了再生混凝土框架結(jié)構(gòu)試驗(yàn)?zāi)Ｐ偷恼駝?dòng)臺(tái)試驗(yàn)?；谠偕炷量蚣芙Y(jié)構(gòu)動(dòng)力試驗(yàn)，分析了隨著臺(tái)面輸入地震波加速度幅值的不斷增大再生混凝土框架結(jié)構(gòu)滯回曲線(xiàn)的變化規(guī)律以及模型抗側(cè)移剛度的退化規(guī)律，評(píng)估了輸入不同地震波時(shí)結(jié)構(gòu)的耗能。通過(guò)對(duì)試驗(yàn)?zāi)Ｐ徒Y(jié)構(gòu)整體和各層間滯回曲線(xiàn)分析，提出再生混凝土框架結(jié)構(gòu)整體和層間能力曲線(xiàn)函數(shù)模型；通過(guò)能力曲線(xiàn)函數(shù)模型，對(duì)再生混凝土框架結(jié)構(gòu)的位移延性進(jìn)行評(píng)估；基于有限元數(shù)值模擬方法，比較分析了再生混凝土框架結(jié)構(gòu)和普通混凝土框架的滯回特性。分析表明，再生混凝土框架結(jié)構(gòu)性能與普通混凝土結(jié)構(gòu)的近似，具有良好的耗能能力、位移延性和變形能力。該研究為再生混凝土結(jié)構(gòu)的抗震優(yōu)化設(shè)計(jì)，以及為再生混凝土制品的推廣和應(yīng)用提供了技術(shù)支持和理論依據(jù)。

［關(guān)鍵詞］再生混凝土框架結(jié)構(gòu); 振動(dòng)臺(tái)試驗(yàn); 滯回性能; 剛度退化; 位移延性

中圖分類(lèi)號(hào)：TU528-79，TU317-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)15-0019-08

Study on hysteretic behavior of recycled aggregate concrete frame structure

Wang Changqing 1, 2， Xiao Jianzhuang 1

(1 Tongji University, Shanghai 200092, China; 2 Nanyang Normal University, Nanyang 473000, China)

Abstract:The first 1/4 scaled six-story recycled aggregate concrete (RAC) spatial frame structure model  was taken as the research object. Shaking table tests on the RAC frame  structure was completed. Based on the RAC frame structure dynamic tests, changing law of the hysteretic curve as well as the lateral stiffness degradation rule for the RAC frame structure with continually increasing acceleration amplitude of the input table earthquake waves was analyzed, and the energy dissipation capacity under the input seismic waves was also assessed. Through the analysis on hysteresis loops of the overall structure and the inter-storey as well, the capacity curve function models were proposed. The displacement ductility of the RAC frame structure was evaluated according to the proposed capacity curve models. Based on the finite element numerical simulation method, a comparative analysis involving the hysteretic characteristics of RAC frame structure and natural aggregate concrete (NAC) frame structure was conducted. The analysis shows that the structural behaviors of RAC frame are similar to NAC frame structure and in good in the energy dissipation capacity, the displacement ductility and the deformability. The study provides technical support and theoretical basis for the seismic optimization design of RAC structures, as well as the promotion and application of RAC products.

Keywords:recycled aggregate concrete (RAC) frame structure; shaking table test; hysteretic behavior; stiffness degradation; displacement ductility

*中國(guó)博士后科學(xué)基金 (2014M550247, 2015T80449)，河南省省重點(diǎn)科技攻關(guān)項(xiàng)目 (152102310027)，河南省教育廳科學(xué)技術(shù)研究重點(diǎn)項(xiàng)目(14B560033)，高層次人才科研啟動(dòng)費(fèi)資助項(xiàng)目(ZX2013016)。

作者簡(jiǎn)介: 王長(zhǎng)青, 博士, Email:changqingwang@#edu.cn。