Experimental and numerical investigations on the flexural behavior of steel-uhpc composite slabs with perfobond rib shear connectors

被引：0
|
作者：
Zhou M. [1 ]
Xiao J.-L. [2 ]
Yang T.-Y. [1 ]
Nie J.-G. [2 ]
Fan J.-S. [3 ]
机构：
[1] Foshan Transportation Science and Technology Co. Ltd., Foshan
[2] Department of Civil Engineering, Tsinghua University, Beijing
[3] Key Laboratory of Civil Engineering Safety and Durability of the Ministry of Education, Tsinghua University, Beijing
来源：
Gongcheng Lixue/Engineering Mechanics | 2022年 / 39卷 / 07期
关键词：
Finite element model; Full-scale tests; Perfobond rib shear connectors; Steel-UHPC composite slab; Ultra-high performance concrete (UHPC);
D O I：
10.6052/j.issn.1000-4750.2021.03.0239
中图分类号：
学科分类号：
摘要：
A new type of steel-ultra-high performance concrete (UHPC) composite slab with perfobond rib shear connectors (PBL shear connectors) is studied, which can be used as large-span bridge decks and floors in buildings. According to the deck system of an ultra-long-span composite cable-stayed bridge, full-scale tests on three steel-UHPC composite slabs (SUCS) and a steel-C60 composite slab (SCCS) were conducted. The influence of the number and type of shear connectors were investigated. The experimental results demonstrate that, subjected to concentrated load, typical flexural failure of SUCS occurred while punching failure of SCCS occurred; that the SUCS possessed much higher ultimate capacity, rigidity and ductility than the SCCS with the same thickness did; that the specimen with sufficient perfobond rib shear connectors exhibited the best mechanical performance among the three SUCSs. Elaborate finite element models of the SUCSs were established in ABAQUS, which can reproduce the load-deflection curves obtained from the tests. Parametric study is conducted adopting the established finite element models. Copyright ©2022 Engineering Mechanics Press. All rights reserved.
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页码：19 / 29
页数：10
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