Experimental Study on Lateral Resistance of Steel Pipe Pile with Wings Using the New Composite Geo-material with Magnesium Acrylate
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In recent earthquakes in Japan, there are many cases that damages on soil-foundation systems negatively affect the functions of the superstructures. It has become important from this point to improve the aseismic capacity of soil-foundation systems.
Soil improvement is one of the measures against ground damages, and “soil-cement mixture” is the material often used, but it sometimes exhibits brittleness, and results in decreasing the aseismic capacity.
Steel pipe piles with wings have high deformation performances, high vertical bearing capacities, and high pull-out resistances. However, these piles loosen soil around the pile shafts, and the loosened soil may affect the lateral subgrade reaction of the piles.
Authors developed an artificial soil having toughness against large deformation.
This paper discusses laboratory studies of the shearing mechanism and the properties of newly developed composite geo-material consisting of magnesium acrylate. Then, report the results of static cyclic loading tests in the actual ground that was to investigate lateral resistance of the steel pipe piles with wings strengthened by the composite geo-material.
KeywordsSteel Pipe Piles Aseismic Capacity Soil-foundation System Lateral Subgrade Soil-cement Mixture
This work was supported by JSPS KAKENHI Grant Number JP17H03342 from Japan Society for the Promotion of Science (JSPS). The authors express their sincere thanks to the above organization.
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