E3S Web Conf.
Volume 293, 20212021 3rd Global Conference on Ecological Environment and Civil Engineering (GCEECE 2021)
|Number of page(s)||7|
|Section||Environmental Energy and Civil Engineering and Water Conservancy Construction|
|Published online||23 July 2021|
Test Study on Composite Strengthened Beam with CFRP Board, Angle Steel and External Prestressed Steel Strand
1 Jiangsu Southeas Special Technical Engineering Co., Ltd, Nanjing, 210008, China
2 School of Civil Engineering, Southeast University, Jiangsu Nanjing, 210096, China
* Corresponding author: Tao Jiang, firstname.lastname@example.org
The composite strengthening beam combined with a variety of reinforcement technology, complementary advantages.In order to study the mechanical behavior of T-beam strengthened with CFRP board, external angle steel and external prestressed steel strand, six reinforced test beams were fabricated to compare and analyze the structural characteristics of bending stiffness, crack development and bearing capacity. The research shows that the beam strengthened by CFRP board, external angle steel and external prestressed steel strand has good working performance. The rebound force of the bending deformation of the external angle steel and the upward force of the external prestressed steel strand reliably anchor the carbon fiber board, avoiding the bond failure and slippage of the CFRP.The three kinds of reinforcing materials work together and complement each other, which can give full play to their respective strength. The composite strengthened beam with CFRP board, external angle steel and external prestressed steel strand can greatly improve the cracking load, structural stiffness and ultimate bearing capacity of the original beam, and the reinforcement effect is optima.
© The Authors, published by EDP Sciences, 2021
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