Geotechnical Centrifuge Experiment and Force Analysis of Reinforced Cushion with Pile Cap Net Structure Embankment

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Using pile-cap-net structure embankment method in small-scale geotechnical centrifuge experiment to attain higher force capability of reinforced cushion on high strength pile composite foundation is a new and modern technology soil test where study variation rules of reinforced cushion in changes of pile spacing and of pile cap sizes on composite foundation are considered. The method operates on its basic principle once small-scale model establishment placing in the centrifugal acceleration environment reflected real stress level of structure through increasing centrifugal force on experimental materials as well as measuring strain value of reinforced cushion through pile spacing and loading. Then, soft soil foundation was handled with CFG piles under vibrating sinking pipe construction model, pilecap-net structure embankments in sparse pile design with similar ratios of pile cap, pile cap coverage ratio and pile allocation ratio made the reinforced net receive heavier force than using pile-net structure embankments method. With strain value of reinforced cushion under impact of loading allocation varied in the form of M letter line. The result showed that with strength improvement of reinforced cushion under the pile-cap-net structure embankment, the construction can be successful.