福州大学学报（自然科学版）2024，Vol.52Issue(4)：462-470,9.DOI:10.7631/issn.1000-2243.23220
可拆卸式钢-预制UHPC组合梁中高强螺栓剪力键的抗剪性能试验
Shear performance tests of high-strength bolted shear connectors in demountable steel-prefabricated UHPC composite beams
摘要
Abstract
A total of sixteen push-out tests were conducted in this study to explore the effects of bolt diameter,bolt grade,bolt pretension degree and shear connector type on the shear performance of high-strength bolts in steel-prefabricated ultra-high performance concrete(UHPC)composite beams.The experimental results indicated that the specimens were mainly failed in bolts fracture.The shear behavior of bolted shear connectors increased with the increase of bolt diameter and bolt grade.The pretension degree of bolt only affected the initial shear stiffness.Compared to traditional welded studs with the same diameter,the shear capacity of bolted shear connector decreased,while the overall shear performance met the requirements of structural mechanical properties.Combining experimental results with domestic and foreign standard formulas,a more accurate model was proposed to predict the shear bearing capacity of the bolted shear connector in the steel-prefabricated UHPC composite beam.关键词
高强螺栓剪力键/钢-预制超高性能混凝土(UHPC)组合梁/可拆卸式/抗剪性能Key words
high-strength bolts shear connector/steel-prefabricated ultra-high performance concrete(UHPC)composite beams/detachable/shear resistance performance分类
建筑与水利引用本文复制引用
吴锦鹏,吴加杰,曹志鹏,方壮城,姜海波..可拆卸式钢-预制UHPC组合梁中高强螺栓剪力键的抗剪性能试验[J].福州大学学报（自然科学版）,2024,52(4):462-470,9.基金项目
国家自然科学基金资助项目(52208156) （52208156）
中国博士后基金资助项目(2022M720874) （2022M720874）
广东省基础与应用基础研究基金区域联合基金资助项目(2022A1515110394) （2022A1515110394）
