Structural behavior of self _ drilling screws applied in steel structures of prefabricated buildings

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Liu, Junzhi^1 ; Liu, Quan^2 ; Feng, Yanqing^1

BeiJing Institute of Technology, Zhuhai

519088, China^1

BeiJing Normal University, Zhuhai

519085, China^2

关键词: American iron and steel institutes;    Connection designs;    Connection strength;    Manufacturing cost;    Residential building;    Resistance capacity;    Single-lap shear tests;    Structural behaviors;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/5/052030/pdf
DOI  :  10.1088/1755-1315/267/5/052030

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Since the fast development of prefabricated building industry facilitate the light thin - walled steel application in both low residential building and fast construction, better understanding of the labour intensive fabrication of connection indicates the problems of optimized connection design and reduced manufacturing cost can be addressed. Several parameters such as number of screws and configurations of the screw layout were varied to study the impact on shear strength. Since the connection strength governs the structural behavior of the truss system which is the main part of modern thin - walled steel structure, the connection strength is calculated according to the American Iron and Steel Institute (AISI), Euro code, and Chinese specification respectively. The main failure mode occurred in self - drilling screw connections are found to be the tilting and bearing failure based on 84 single lap shear test. All testing specimens have experience four stages. When the spacing is fixed to certain number and the screw is less than six, the effect of configuration patter on the resistance capacity is very limited. In contrast, if the screw number is more than six, certain patter layout could lead to better overall strength compare with normal layout patter and the group effect factor is becoming as a constant. The strength of connection can be increased by enlarging the screw spacing with certain range.