东南大学学报（自然科学版）2024，Vol.54Issue(2)：251-259,9.DOI:10.3969/j.issn.1001-0505.2024.02.001
双向受力的开槽混凝土叠合板力学性能试验研究
Experimental study on the mechanical properties of two-way concrete composite slab with notches
摘要
Abstract
To solve the problem that the extended reinforcement bars in the joint of two-way composite slab conflict with other components and affect construction,two-way concrete composite slab with notches was pro-posed.Notches were reserved in the joint and additional reinforcement bars were placed in the notches to con-nect the adjacent prefabricated slabs.Three specimens were designed to experimentally study the mechanical properties of the proposed slabs.The results show that the bearing capacity and stiffness ratio of the two-way concrete composite slab to the cast-in-place concrete slab are 0.99 and 1.08,respectively.The ductility coef-ficient of the two-way concrete composite slab reaches 9.59 and the failure modes of both are consistent with each other.Increasing the number of notches has little effect on the elastic stiffness,cracking load and ultimate strength of the specimen,but can improve the ductility of the composite slab.Two-way concrete composite slab with notches can effectively transfer the force between the prefabricated slabs and has mechanical proper-ties consistent with the cast-in-place concrete slab.When applied to practical projects,the two-way concrete composite slab with notches can improve construction efficiency,reduce the usage of steel bars and increase economic performance,which has broad application prospects.关键词
装配整体式结构/开槽混凝土叠合板/双向板/力学性能/设计方法Key words
monolithic precast concrete structure/concrete composite slab with notches/two-way slab/me-chanical property/design method分类
建筑与水利引用本文复制引用
聂鑫,庄亮东,李易凡,杨悦..双向受力的开槽混凝土叠合板力学性能试验研究[J].东南大学学报（自然科学版）,2024,54(2):251-259,9.基金项目
国家自然科学基金原创探索资助项目(52250003)、国家自然科学基金资助项目(52222801). （52250003）
