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(1 中國(guó)建筑科學(xué)研究院有限公司, 北京 100013; 2 遠(yuǎn)大住工建筑研究院, 長(zhǎng)沙 410006)
[摘要]針對(duì)一種新型裝配式框架——帶非承重墻預(yù)制梁裝配式混凝土框架的抗震性能進(jìn)行了深入研究。通過(guò)對(duì)空框架、砌塊填充墻框架、帶非承重墻預(yù)制梁框架的足尺試件進(jìn)行抗震性能試驗(yàn),主要研究了各類(lèi)填充墻及不同連接構(gòu)造的預(yù)制非承重墻對(duì)框架受力性能的影響。結(jié)果表明,與傳統(tǒng)砌塊填充墻相比,預(yù)制非承重墻對(duì)框架受力性能的影響較大,破壞形態(tài)為框架受剪破壞,其承載力、剛度、耗能能力等提高顯著,但變形能力及位移延性下降。根據(jù)試驗(yàn)結(jié)果,給出了預(yù)制非承重墻對(duì)框架結(jié)構(gòu)的周期折減系數(shù)范圍。試驗(yàn)研究表明,帶非承重墻預(yù)制梁框架的抗震性能與砌塊填充墻框架有較大區(qū)別,從結(jié)構(gòu)分析、構(gòu)件設(shè)計(jì)等方面均需要采用不同的設(shè)計(jì)方法。
[關(guān)鍵詞]裝配式混凝土框架; 帶非承重墻預(yù)制梁; 抗震性能; 砌塊填充墻框架; 周期折減系數(shù)
中圖分類(lèi)號(hào):TU375-4文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2019)24-0082-06
Experimental study on seismic behavior of assembly concrete frame structure of precast girder with nonbearing wall
Zhu Limin1, Wang Jun1, Tian Chunyu1, Li Jinshi2
(1 China Academy of Building Research, Beijing 100013, China;2 Yuanda Residential Building Research Institute, Changsha 410006, China)
Abstract:The in-depth research on seismic behavior of a new type of assembly concrete frame of precast girder with nonbearing wall was studied. According to the seismic behavior experiment of full-scale specimen of empty frame, filled frame with block wall and frame with precast girder nonbearing wall, the influences of the precast nonbearing wall with various infill walls and different joint structures on frame mechanical performance were studied. The results indicate that compared with the traditional filled frame with block wall, the precast nonbearing wall has a greater impact on the frame mechanical performance. The failure mode is the shear failure of the frame, and its bearing capacity, stiffness and energy consumption were improved significantly, but the deformation capacity and displacement ductility were decreased. Based on the experiment results, the range of period reduction coefficient was given for precast nonbearing walls on frame structure. The experimental study shows that the seismic behavior of frame with precast nonbearing wall is quite different from that of filled frame with block wall. Different design methods are needed from structural analysis and component design.
Keywords:assembly concrete frame; precast girder with nonbearing wall; seismic behavior; filled frame with block wall; period reduction coefficient
*十三五國(guó)家重點(diǎn)研發(fā)計(jì)劃課題—裝配式混凝土結(jié)構(gòu)關(guān)鍵配套產(chǎn)品開(kāi)發(fā)(2016YFC0701907)。作者簡(jiǎn)介:朱禮敏,博士,研究員,一級(jí)注冊(cè)結(jié)構(gòu)工程師,Email:zhulimin@cabrtech.com。
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