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(1 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院 (集團(tuán)) 有限公司,上海 200092;2 南京工程學(xué)院建筑工程學(xué)院,南京 211167;3 東南大學(xué)建筑設(shè)計(jì)研究院有限公司,南京 210096;4 東南大學(xué)混凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點(diǎn)實(shí)驗(yàn)室,南京 210096)

摘要: 為擺脫目前裝配整體式混凝土框架“等同現(xiàn)澆”的固有模式,結(jié)合傳統(tǒng)預(yù)應(yīng)力自復(fù)位混凝土框架的優(yōu)越性,提出一種帶軟鋼阻尼器的自復(fù)位裝配式混凝土( SCPCHD)框架.利用 ABQUAS 有限元軟件分別建立新型自復(fù)位SCPCHD 框架、傳統(tǒng)預(yù)應(yīng)力自復(fù)位裝配式混凝土(SCPC)框架和現(xiàn)澆鋼筋混凝土(RC)框架的精細(xì)化三維實(shí)體數(shù)值分析模型,從而驗(yàn)證新型 SCPCHD 框架良好的抗震性能和耗能能力.分析結(jié)果表明:SCPCHD 框架殘余變形很小、具有震后恢復(fù)性能好的優(yōu)點(diǎn);SCPCHD 框架的層間位移響應(yīng)明顯小于 SCPC 框架,與現(xiàn)澆 RC 框架基本接近,且結(jié)構(gòu)構(gòu)件塑性損傷小;罕遇地震下 SCPCHD 梁柱節(jié)點(diǎn)的耗能分別為傳統(tǒng)預(yù)應(yīng)力 SCPC 框架和現(xiàn)澆 RC 框架節(jié)點(diǎn)耗能的2.26 倍和 3.64 倍,表明新型節(jié)點(diǎn)耗能能力好.

關(guān)鍵詞: 自復(fù)位;軟鋼阻尼器;三維實(shí)體;耗能能力;塑性損傷

中圖分類號(hào):TU318 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)17-0025-07

DOI:10.19701 / j.jzjg.20201800

Study on seismic performance of self-centering precast concrete frame connections withhysteretic dampers

GENG Fangfang1,2,WU Honglei1,SHEN Wei3,YANG Kang4

(1 Tongji Architectural Design (Group) Co. ,Ltd. ,Shanghai 200092,China;2 School of Architecture Engineering,Nanjing Institute of Technology,Nanjing 211167,China;3 Southeast University Architectural Design Institute Co. ,Ltd. ,Nanjing 210096,China;4 Key Laboratory of Concrete and Prestressed Concrete Structures of Ministryof Education,Southeast University,Nanjing 210096,China)

Abstract:In order to break through the inherent mode of “ equivalent to cast-in-place” of precast-monolithic concreteframe,combined with the advantage of traditional prestressed self-centering concrete frame,a kind of self-centering precastconcrete with hysteretic damper (SCPCHD) frame was proposed. In order to verify the desirable seismic performance andenergy dissipation capacity of the novel SCPCHD frame ,the refined three-dimensional solid numerical analysis models ofthe novel self-centering SCPCHD frame,the traditional prestressed self-centering precast concrete ( SCPC) frame andcast-in-situ reinforced concrete ( RC) frame were established by using ABQUAS finite element software. The analysisresults showed that: the residual deformation of the SCPCHD frame is negligible,and has the advantage of goodself-centering capacity after earthquake. The inter-story displacement response of SCPCHD frame is obviously smaller thanthat of the SCPC frame,which is basically close to that of the cast-in-situ RC frame,and the plastic damage of structuralcomponent for SCPCHD frame is minor. Under the rarely-occurred earthquake,the energy dissipation of the beam-columnjoint of the SCPCHD frame was about 2. 26 and 3. 64 times that of the traditional prestressed SCPC frame and thecast-in-situ RC frame respectively,indicating the novel kind of joint has good energy dissipation capacity.

Keywords:self-centering;hysteretic damper;three-dimensional solid;energy dissipation capacity;plastic damage

∗國(guó)家自然科學(xué)基金資助項(xiàng)目(51608258、51878315),中國(guó)博士后面上資助項(xiàng)目(2019M651595),江蘇省“六大人才高峰”資助項(xiàng)目(JZ-032),同濟(jì)大學(xué)建筑設(shè)計(jì)研究院(集團(tuán))有限公司科研課題(2017KY13).

第一作者:耿方方,博士,副教授,主要從事自復(fù)位裝配式混凝土結(jié)構(gòu)的研究,Email:j00000002962@ njit. edu. cn.

[引用本文] 耿方方,吳宏磊,沈偉,等. 帶軟鋼阻尼器的自復(fù)位裝配式混凝土框架節(jié)點(diǎn)抗震性能研究[ J]. 建筑結(jié)構(gòu),2022,52 ( 17): 25-31,58. GENG Fangfang,WU Honglei,SHEN Wei,et al. Study on seismic performance ofself-centering precast concrete frame connections with hysteretic dampers[J]. Building Structure,2022,52(17):25-31,58.