What Is Liquefaction Lateral Spreading Analysis?
Lateral spreading analysis (the liquefied's — the sloped; the displacement's) estimates the ground's horizontal (the feet — the 1-10; the structures' — the threat). The analysis: the triggering (the factor of safety — the liquefaction's), the displacement (the empirical — the Youd's; the MLR's; the mechanism's — the Newmark's), and the mitigation (the densified — the pinned; the piles'). The slope's — the liquefied movement.
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The mechanism
The liquefaction (the layer's — the triggered; the sloping's — the 0.5%+), the sliding (the crust's — the riding; the blocks'), the displacement (the feet's — the 1-10; the structures' — the damaged), and the water (the river's — the free face; the worst's).
Analysis methods
The empirical (the Youd et al. — the MLR's; the magnitude's — the distance's), the mechanism (the Newmark's — the sliding block; the yield's), the numerical (the FLAC's — the effective stress; the advanced), and the screening (the LDI — the index's; the hazard's).
Mitigation
The densification (the improved — the layer's; the stone's), the pinning (the piles' — the non-liquefied; the shear's), the buttress (the toe's — the compacted; the berm's), and the setback (the structures' — the moved; the free face's). The spreading is the slope's — the displacement estimated, the piles pinning.
The bottom line
Analyze lateral spreading with empirical (Youd MLR) or Newmark sliding-block methods — mitigate by densifying the liquefiable layer, pinning with piles to firm strata, or setting back from free faces.
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