Sinorock has the capability of combining our micropile technology with one or more of our other ground modification techniques to meet unique or complex project requirements cost-effectively and efficiently. Lines of micropiles spanned by wooden lagging can be ideal where excavation walls are required in low headroom and other confined areas. Post-grouting within the bond length can increase frictional forces with surrounding soils, thus achieving greater capacity. Micropiles can serve to “stitch” the soil together, within predicted shear zones to enhance mass stability. In liquefiable profiles micropiles can transfer loads to competent bearing strata to conform to seismic design requirements. Underpinning of foundations adjacent to planned excavations is another micropile application.
Micropiles, also known as minipiles, (and less commonly as pin piles, needle piles and root piles) are deep foundation elements constructed using high-strength, small-diameter steel casing and/or threaded bar. Capacities vary depending on the micropile size and subsurface profile. Allowable micropile capacities in excess of 1,000 tons have been achieved.
Whether a situation is typical or unique, Sinorock has the experience and innovation to assist engineers, contractors and owners with identifying and constructing the most economical solution that satisfies the technical requirements of each project.
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