Seismic Retrofit of RC Short Columns with Textile-Reinforced Alkali-Activated or Cement-Based Mortars

Data Availability Statement

Acknowledgments

Notation

A_c

concrete cross section area;

a

confinement effectiveness coefficient;

d

effective depth of a concrete cross section;

d′

distance of the compressive reinforcement from the extreme compression fiber;

d_b

longitudinal rebar diameter;

E_c

elastic modulus of concrete;

f_c

compressive strength of concrete;

f_cc

compressive strength of confined concrete;

f_cc,trm

compressive strength of TRM-confined concrete;

f_je

effective strength of a TRM jacket;

f_ul

ultimate tensile stress of the longitudinal reinforcement;

f_yl

yielding stress of longitudinal reinforcement;

f_yw

yielding stress of shear reinforcement;

h₀

confined concrete core length in the loading direction;

I_g

effective flexural stiffness;

k_e

TRM confinement effectiveness coefficient;

L_s

shear span;

M_f,u

flexural capacity;

M_n

nominal flexural strength;

M_y

yielding moment;

N

axial load;

t_j

nominal thickness of horizontally oriented fibers in a TRM jacket;

V_u

shear strength;

V_y

shear load at flexural yielding;

z

internal lever arm of the cross section;

${\epsilon }_1$

principal tensile strain;

${\epsilon }_2$

principal compressive strain;

${\epsilon }_h$

average horizontal tensile strain;

${\epsilon }_{c0,c,\mathrm{trm}}$

strain of TRM-confined concrete at peak stress;

${\epsilon }_{c0,c}$

strain of confined concrete at peak stress;

${\epsilon }_{c0}$

strain of unconfined concrete at peak stress;

${\epsilon }_{cu,c,\mathrm{trm}}$

ultimate strain of TRM-confined concrete;

${\epsilon }_{cu,c}$

ultimate strain of confined concrete;

${\epsilon }_{j,u}$

ultimate strain of TRM jacket;

${\epsilon }_v$

average vertical tensile strain;

γ_vh

average shear strain in the element;

θ

diagonal strut inclination angle;

θ_f,e

drifts caused by linear elastic flexural deformation;

θ_f,pl

drifts caused by nonlinear flexural deformation;

θ_s

drifts caused by shear deformation;

θ_slip,e

drifts caused by linear elastic longitudinal reinforcement slippage;

θ_slip,pl

drifts caused by nonlinear longitudinal reinforcement slippage;

${\mu }_{\mathrm{\Delta }}$

total displacement ductility;

${\mu }_{\mathrm{\Delta }}^{pl}$

inelastic deformation ductility;

ρ_l

geometric ratio of longitudinal reinforcement;

ρ_w

minimum geometric ratio of shear reinforcement;

σ_lu

confining stress at TRM jacket failure;

φ_u

ultimate curvature;

${\phi }_y^{\mathrm{\prime }}$

effective yielding curvature; and

${\phi }_y^{}$

yielding curvature.

References