Test Study on Composite Strengthened Beam with CFRP Board, Angle Steel and External Prestressed Steel Strand

The composite strengthening beam combined with a variety of reinforcement technology, complementary advantages.In order to study the mechanical behavior T-beam strengthened CFRP board, external angle steel and prestressed strand, six reinforced test beams were fabricated compare analyze structural characteristics bending stiffness, crack development bearing capacity. research shows that by strand has good working performance. rebound force deformation upward reliably anchor carbon fiber avoiding bond failure slippage CFRP.The three kinds reinforcing materials work together complement each other, which can give full play their respective strength. greatly improve cracking load, stiffness ultimate capacity original beam, effect is optima.