Toward Key Research Gaps in Design Recommendations on Flexurally Plated RC Beams Susceptible to Premature Failures

Acknowledgments

Notation

A_e

concrete tensile area;

A_p

cross-sectional area of steel plate;

A_sc

area of steel bars in compression;

A_st

area of steel bars in tension;

B

width of the beam;

b, b_p, b₁

width of externally bonded steel plate;

D

depth of concrete beam;

d

effective depth of unplated beam;

d_cg

effective depth of plated beam;

E_c

Young's modulus for concrete;

E_p

Young's modulus for steel plate;

E_st

Young's modulus for steel bars;

f_ck

characteristic compressive strength of concrete;

f_cu

concrete cube strength;

$f_t^{\mathrm{\prime }}$

cylinder splitting tensile strength of concrete;

f_y

yield strength of steel bars;

f_yp

yield strength of steel plate;

L, L_p

length of plate in shear span;

L_e

effective bond length;

L_p,1

effective length of the steel plate in shear span;

l_{p min}

minimum stabilized crack spacing in the beam with steel plate;

M_{u exp}

experimental moment capacity;

M_{u theo}

theoretical moment capacity;

t_a

adhesive thickness;

t_p

plate thickness;

u

steel/concrete average bond strength;

x_u

actual depth of neutral axis;

x_{u lim}

limiting depth of neutral axis;

∈_c

compressive strain of concrete at a distance x_u from neutral axis;

∈_st

strain of steel bars;

∈_p

strain of steel plate;

$\sum O_{\mathrm{bars}}$

total perimeter of steel bars in tension;

σ_p

magnitude of plate longitudinal tensile stress at the instance of peeling failure;

σ_d

magnitude of plate longitudinal tensile stress at the instance of debonding failure; and

$\mathrm{\Phi }$

diameter of steel bars in tension.

References