Field Pullout Testing and Performance Evaluation of GFRP Soil Nails

Pullout performance of GFRP anti-floating anchor in weathered soil

“…Each sensor has an initial length (k i , pm) and a constant strain sensitivity coefficient K s (in these tests 1.2 pm/le), so the wavelength change under loads is Dk s = (k i À k) and the axial strain is De = Dk s /K S . Zhu et al (2011) and Pei et al (2011) adhered FBG sensors on pregrooved GFRP soil nails to monitor the strain distribution during pullout tests. However, their method for the instruments installation was not easily implemented and could ruin the integrity of the specimens, affecting the results accuracy.…”

Effect of loading rate and chemical corrosion on the mechanical properties of large diameter glass/basalt-glass FRP bars

“…Recently, the great advantages observed in these studies have increasingly drawn interest in adopting this technique to the reinforcement of slopes and excavations as soil nails (normally 20-40 mm in diameter) [13][14][15]. However, it has been reported that the mechanical properties (particularly the ultimate tensile strength) of FRP bars are sensitive to their diameters [8,16], the conclusions achieved by studies based on smaller size FRP bars may not apply to the larger ones.…”

A new flexible FBG sensing beam for measuring dynamic lateral displacements of soil in a shaking table test

“…Recent studies have been shown that the fiber optic sensors can be effectively employed for strain measurement [6][7][8]. However, it is difficult to directly use fiber optic sensors to measure the displacement due to its fragility and limited measuring range.…”