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（1 山東大學(xué)土建與水利學(xué)院， 濟(jì)南 250061； 2 中國(guó)建筑科學(xué)研究院有限公司， 北京 100013；3 三一筑工科技有限公司， 北京 102202）

［摘要］針對(duì)適用于裝配式多層混凝土剪力墻結(jié)構(gòu)豎向接縫的干式連接方法進(jìn)行直剪力學(xué)性能試驗(yàn)研究。這種連接方法采用高強(qiáng)螺栓連接，預(yù)制構(gòu)件邊緣無外露鋼筋，具有生產(chǎn)、施工效率高等特點(diǎn)。設(shè)計(jì)并制作了4組共8個(gè)預(yù)制構(gòu)件結(jié)合面試件，研究結(jié)合面的抗剪性能。研究表明，螺栓連接預(yù)制構(gòu)件結(jié)合面的直剪破壞模式基本一致，與螺桿接觸處的混凝土出現(xiàn)局壓破壞，螺栓受拉剪產(chǎn)生彎曲變形；結(jié)合面的抗剪承載力主要來源于結(jié)合面間摩擦力和螺栓銷栓力；增加墻體的厚度對(duì)承載力和剛度的提升效果不明顯，增大連接螺栓直徑可以有效地提高試件的承載力。結(jié)合試件工作機(jī)理給出了結(jié)合面抗剪承載力計(jì)算公式，為工程應(yīng)用與標(biāo)準(zhǔn)編制提供依據(jù)。

［關(guān)鍵詞］裝配式多層混凝土剪力墻結(jié)構(gòu)； 結(jié)合面； 螺栓連接； 直剪性能

中圖分類號(hào)：TU398-7文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)11-0043-05

Experimental research on direct shear performance of joint interface of bolt-connected prefabricated components

Hou Quansheng1,2, Hou Hetao1, Li Ran2 , Tian Chunyu2, Ma Yunfei3, Li Qingshan3

(1 School of Civil Engineering, Shandong University, Jinan 250061, China; 2 China Academy of Building Research, Beijing 100013, China; 3 Sany Group Co., Ltd., Beijing 102202, China)

Abstract:The experimental research on direct shear mechanical performance of the vertical joints of prefabricated multi-storey concrete shear wall structure by means of the dry connection method were studied. This connection method uses high-strength bolt connection, and there is no exposed steel bar in prefabricated component edge. It has the characteristics of high production and high construction efficiency. Four groups of eight prefabricated components were designed and manufactured to study the shear resistance of the joint interface. The research shows that the direct shear failure mode of the joint interface of bolted prefabricated members is basically the same. The concrete contact with the bolts is damaged by local compression, and the bolts become deformed under tension and shear forces. The shear bearing capacity of the joint interface mainly comes from the friction force between the joint interfaces and the bolt pin force. Increasing the thickness of the wall has no obvious effect on the increase of the bearing capacity and stiffness. Increasing the diameter of the connecting bolt can effectively improve the bearing capacity of specimens. Based on the working mechanism of the specimens, the formulas for calculating the shear bearing capacity of the interface were given, which provide a basis for engineering application and standard compilation.

Keywords:prefabricated multi-storey concrete shear wall structure; joint interface; bolt connection; direct shear performance

*十三五重點(diǎn)研發(fā)計(jì)劃課題（2016YFC0701907），中國(guó)建筑科學(xué)研究院應(yīng)用技術(shù)研究課題（20150122330730033）。

通訊作者：李然，博士，副研究員，Email：liran@cabrtech.com。