Field-Scale Experimental Study on Thermomechanical Behaviors of Super-Long and Large-Diameter Energy Piles under Liquefied Natural Gas Tank

Figure 5

Construction of energy pile on site: (a) borehole drilling; (b) reinforcing cage with 3U-shaped tube; (c) sensor instrumentation; (d) burying of reinforcing cage; (e) pile after cast-in-place concrete ready for test; (f) stacking of concrete blocks for static load test; (g) applied apparatus for thermal response test; (h) data measurement of strains and temperatures.