Effect of Shear Connector Layout on the Behavior of Steel-Concrete Composite Beams with Interface Slip

Applied Sciences

卷:9

Shao-Fei Jiang¹  Donghua Zhou²  Xinggui Zeng³ 

[1] College of Civil Engineering, Fuzhou University, Fuzhou 350108, China;

[2] Construction Engineering College, Kunming University of Science and Technology, Kunming 650500, China;

[3] Institute of Civil Engineering, Putian University, Putian 351100, China;

关键词: composite beam element;    element stiffness matrix;    partial interaction;    shear connectors;    interface slip;    stepwise uniform distribution;   

DOI  :  10.3390/app9010207

来源: DOAJ

【 摘 要 】

In a steel-concrete composite beam (hereafter referred to as a composite beam), partial interaction between the concrete slab and the steel beam results in an appreciable increase in the beam deflections relative to full interaction behavior. Moreover, the distribution type of the shear connectors has a great impact on the degree of the composite action between the two components of the beam. To reveal the effect of shear connector layout in the performance of composite beams, on the basis of a developed one-dimensional composite beam element validated by the closed-form precision solutions and experimental results, this paper optimizes the layout of shear connectors in composite beams with partial interaction by adopting a stepwise uniform distribution of shear connectors to approximate the triangular distribution of the shear connector density without increasing the total number of shear connectors. Based on a comparison of all the different types of stepped rectangles distribution, this paper finally suggests the 3-stepped rectangles distribution of shear connectors as a reasonable and applicable optimal method.

【 授权许可】

Unknown