Ground improvement is carried out for various objectives, primarily to improve the bearing capacity and reduce settlement of soft ground, prevent earthquake liquefaction, control groundwater, stabilize excavation bottom, prevent deformation of the surrounding ground, or clean up the contaminated ground.
Micropiles, also known as mini piles, pin piles, needle piles, and root piles, is a deep foundation element constructed using high-strength, small-diameter steel casing and/or threaded bars. It can “stitch” the soil together within predicted shear zones to enhance mass stability. In liquefiable profiles, micro piles can transfer loads to competent bearing strata to follow seismic design requirements.
