摘要
抗剪连接件主要用于承担混凝土翼板与钢梁上翼缘之间的纵向剪力,是保证钢-混凝土结构构件共同受力、协调变形的关键部件.提出一种新型连接件,即在倒T型截面钢梁腹板上边缘部分开孔,钢梁腹板开孔上边缘焊接连续的蛇形钢筋,并将混凝土浇入其中从而形成连接件传递剪力.通过7组共15个推出试件的极限承载力试验,研究了该推出试件的破坏过程、破坏形态;考察了混凝土强度、钢板开孔、蛇形钢筋、贯通钢筋、配箍率等单因素对该型连接件极限承载力的影响;提出了新型连接件抗剪承载力计算公式;分析了连接件的黏结滑移性能.试验结果表明:在同等条件下,新型连接件极限抗剪承载力比普通开孔板连接件有较大程度的提高,表现出较好的延性.
Shear connectors are mainly used to bear the longitudinal shear force between the reinforced concrete flange plates and steel girder of composite girder structure and are a critical component to ensure steel and concrete composite structure joint force and collaborative deformation. As a new type connector,it made an opening in the top edge of inverted T steel beam web,arranged continuity serpentine steel bar in the top edge of an opening and then poured into concrete. The authors designed and made 15 push-out test samples composed of 7 different groups and accomplished the ultimate bearing capacity tests of the 15 test samples.They also investigated the single factor influencing the ultimate bearing capacity of this shear connectors are the strength of concrete,the opening,perforated rebar,serpentine steel bar and the ratio of stirrup reinforcement.The paper also studied the failure mode and failure process of the samples and obtained a calculation formula and analyzed the bond-slip behavior. The conclusions show that this new type of perforated plate connector has great bearing capacity and good ductility under the same conditions.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2010年第4期492-498,共7页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
关键词
连接件
推出试验
蛇形钢筋
抗剪承载力
connector
push-out test
serpentine steel bar
shear capacity
