- 摘 要
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(1 湖南科技大學(xué)土木工程學(xué)院， 湘潭 411021；2 湖南省建筑設(shè)計院有限公司， 長沙 410012)
［摘要］鋼-混凝土組合構(gòu)件中的栓釘抗剪連接件作為主要傳力部件，在混凝土中的力學(xué)行為極為復(fù)雜，栓釘周圍的混凝土受栓釘“剪撬”局壓集中作用極易產(chǎn)生劈裂微裂縫。為解決栓釘抗剪連接件“剪撬”局壓劈裂的問題，提出一類帶約束構(gòu)造的栓釘抗剪連接件，通過推出試驗研究了該新型栓釘連接件在鋼-混凝土翼緣板之間的界面抗剪受力性能，比較了其與傳統(tǒng)栓釘界面抗剪性能的差異。研究表明：帶約束構(gòu)造的栓釘抗剪連接件能依靠自身的約束構(gòu)造有效地避免“剪撬”局壓劈裂的不利影響，較大地提高鋼-混凝土翼緣板之間的界面抗剪剛度，為鋼-混凝土組合構(gòu)件強連接系數(shù)的設(shè)計提供了理論依據(jù)。
［關(guān)鍵詞］栓釘抗剪連接件；約束構(gòu)造；滑移；剪切剛度；橫向鋼筋
中圖分類號：TU398-9 文獻標(biāo)識碼：A文章編號：1002-848X(2021)18-0032-08
Research on mechanical behavior of stud shear connector with constraint measure
QI Jingjing1, CAO Hua2, PU Minghua2, HU Xiao1, Lv Weirong1, HUANG Zhi1
(1 School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411021， China；2 Hunan Architectural Design Institute Co., Ltd., Changsha 410012， China)
Abstract: The stud shear connector is the main force transfer member in the steel-concrete composite member, and the mechanical behavior is very complicated in the concrete. The concrete around the stud is subjected to the pry-out local pressure concentration of the stud, which can easily produce splitting mirco-cracks. In order to solve the problem of pry-out local pressure splitting of stud shear mechanical connector, a kind of stud connector with constraint measure was proposed. Through the push-out test, the interface shear mechanical behavior of the new stud connector between steel and concrete flange plate was studied, and the difference between the new stud connector and the traditional stud connector was compared. The results show that the stud shear connector with constraint measure can effectively avoid the adverse effect of pry-out local pressure splitting by relying on its own constraint measure. The shear stiffness of the interface between steel and concrete flange plates is greatly improved, which provides a theoretical basis for the design of strong connection coefficient of steel-concrete composite members.
Keywords:stud shear connector； constraint measure； slip； shear stiffness； transverse reinforcement
*國家自然科學(xué)基金項目（51808213），湖南省教育廳重點項目（20A184）。
作者簡介：戚菁菁，博士，講師，碩士生導(dǎo)師，Email:34924015@qq.com； 通信作者：曹華，碩士，高級工程師，Email：292684408@qq.com。
