Experimental investigation of bending stiffness of a novel 54m FRP space truss string bridge

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Yan, Xiaoqiang^1 ; Zhao, Qilin^2 ; Zhao, Dong^3 ; Ke, Minyong^4 ; Zeng, Zhigang^3 ; Zhang, Dongdong^1

College of Field Engineering, Army Engineering University of PLA, Nanjing

210007, China^1

College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing

210009, China^2

Engineering Design Institute, Research Institute of CAPF, Beijing

100020, China^3

Nanjing Hydraulic Research Institute, Nanjing

210029, China^4

关键词: Bending stiffness;    Composite components;    Composite truss;    Emergency situation;    Experimental investigations;    Load-displacement response;    Long-span bridge;    Roof structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/2/022103/pdf
DOI  :  10.1088/1757-899X/452/2/022103

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Composite truss has the characteristics of light weight, high strength and full play of the axial mechanical properties of the composite components, which can be applied to form long-span bridges, roof structures et al. A novel 54m space truss string bridge made of pultruded GFRP profiles is proposed in this paper based on the composite pre-tightened tooth connection. The proposed space truss string bridge was fabricated, assembled and tested statically, and the load-displacement responses were recorded. The response of the bridge evidenced a sound carrying capacity, the deformation and stiffness of the space truss string bridge meet the requirements and can be used for bridge repair in emergency situations.