西安科技大学学报2025，Vol.45Issue(2)：340-350,11.DOI:10.13800/j.cnki.xakjdxxb.2025.0212
竖向螺栓连接密拼叠合板受弯性能试验
Experiment on flexural behavior of closely jointed composite slabs connected on vertical bolts
摘要
Abstract
In order to solve the problems of traditional post-cast strip composite slabs,like complex pro-cedures and high formwork consumption,as well as the difficulties in fixing additional rebars and low bearing capacity at the joint section of bottom-rebar-free closely jointed composite slabs,three closely jointed composite slabs connected by vertical bolts and one made according to 15G310-1 Atlas were designed.Flexural tests were conducted to study the influence of vertical bolt arrangement and quantity on the bearing capacity,deformation and failure mechanism of closely jointed composite slabs,verify the effectiveness of vertical bolt connection,and propose a flexural bearing capacity calculation model for such slabs.The results show that the closely jointed composite slabs connected by vertical bolts outper-form the bottom-rebar-free ones in 15G310-1 Atlas in flexural bearing capacity and deformation.The vertical bolt connection can better ensure the integrity of the precast and cast-in-place layers.When u-sing single-row vertical bolts,the cracking and ultimate loads of the composite slabs increase with more bolts.Compared with single-row connection,double-row vertical bolt connection can further increase these loads.The bearing capacity check shows that the joint position of the closely jointed composite slabs connected by vertical bolts meets the code requirements.The research enriches the connection forms of prefabricated composite slabs and provides a reference for calculating the bearing capacity of composite slabs connected by vertical bolts.关键词
叠合板/拼缝/螺栓连接/受弯性能/承载力Key words
composite slab/connection joint/bolted connection/flexural performance/bearing capacity分类
建筑与水利引用本文复制引用
关虓,程豪杰,秦卿,师红杰,唐丽云,程亮,任翔,张程华,高志刚..竖向螺栓连接密拼叠合板受弯性能试验[J].西安科技大学学报,2025,45(2):340-350,11.基金项目
陕西省重点产业创新链(群)项目(2024SF-ZDCYL-05-12) （群）
