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(1 中國(guó)建筑第八工程局有限公司， 上海 200135； 2 同濟(jì)大學(xué)土木工程學(xué)院， 上海 200092；3 華東建筑集團(tuán)股份有限公司， 上海 200011； 4 北京工業(yè)大學(xué)城建學(xué)部， 北京 100124)

［摘要］針對(duì)雙面疊合剪力墻水平連接節(jié)點(diǎn)，進(jìn)行了循環(huán)剪切荷載作用下的試驗(yàn)研究。結(jié)果表明在灌漿層內(nèi)出現(xiàn)了對(duì)角斜裂縫，水平連接節(jié)點(diǎn)破壞時(shí)伴隨著對(duì)角裂縫附近混凝土的壓潰，可以通過(guò)軟化拉壓桿模型來(lái)解釋這一現(xiàn)象。根據(jù)軟化拉壓桿模型對(duì)雙面疊合剪力墻水平連接節(jié)點(diǎn)的抗剪機(jī)理進(jìn)行分析，根據(jù)試驗(yàn)結(jié)果對(duì)軟化拉壓桿模型中斜壓桿的有效寬度進(jìn)行了分析，建立了基于軟化拉壓桿模型的雙面疊合剪力墻水平連接節(jié)點(diǎn)的抗剪承載力計(jì)算公式。 

［關(guān)鍵詞］雙面疊合剪力墻；水平連接節(jié)點(diǎn)；抗剪承載力；軟化拉壓桿模型 

中圖分類號(hào)：TU375-1 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：1002-848X(2021)23-0120-07

Analysis of capacity on horizontal connections node of the double-superimposed shear wall based on a softened strut-and-tie model  

YU  Shaole1,  YANG  Lianping2,3,  QI  Ligang1,  ZHANG  Qilin2,  ZHANG  Wenying4

(1 China Construction Eighth Engineering Division Co., Ltd., Shanghai 200135， China； 2 College of Civil Engineering，Tongji University, Shanghai 200092， China； 3 Arcplus Group PLC, Shanghai 200011， China； 4 College of Civil Engineering, Beijing University of Technology, Beijing 100124， China) 

Abstract: For the horizontal connection node of the double-superimposed shear wall, an experimental study under the action of cyclic shear load was carried out. The results show that diagonal cracks appear in the grouting layer, and the failure of horizontal connection nodes is accompanied by the collapse of the concrete near the diagonal cracks. This phenomenon can be explained by softened strut-and-tie model. The shear mechanism of horizontal connections node of the double-superimposed shear wall was analyzed based on softened strut-and-tie model. According to the test results, the effective width of the diagonal strut in the softened strut-and-tie model was analyzed. The calculation formula for shear bearing capacity of the horizontal connection node of the double-superimposed shear wall was derived based on the softened strut-and-tie model. 

Keywords:double-superimposed shear wall； horizontal connection node； shear capacity； softened strut-and-tie model

*上海市科委“上海市裝配式建筑技術(shù)集成工程技術(shù)研究中心”建設(shè)項(xiàng)目（16DZ2250600）。

 作者簡(jiǎn)介：余少樂，博士，高級(jí)工程師，Email:  yushaole10@163.com； 通信作者：張文瑩，博士，講師，碩士生導(dǎo)師，Email: wenyingchangan@163.com。