I know that it is a Japanese style caisson type pile or deep foundation. But in course of my work, I need to find some details regarding this foundation.
Please find the attached patent for "A method of constructing Shinso pile type earth retaining retaining wall" . it shows the construction method for Shinso piles
shinso foundation is weel type foundation which was dug manually... u can get more information on "Civil Engineering for Underground Rail Transport" by JT Edwards...
This invention, in shinso foundation work of transmission tower, Ke circular shoring - Shinguchu - Bed or liner - pre - and Kezuho a vertical shaft using such bets, constituting the skeleton portion of the foundation in the pit reinforcing bar cage on structural substrates for pile body reinforcement to be mounted on the foundation base ground in order to stabilize the pile body constructed crowded denominated
Find ways to maximize the design economy of the shinso foundation (Japanese style caisson type pile) on the rock slope through an evaluation of strength properties of the rock before and after plasticity. We investigate the influence of soil properties on the design result by carrying out experiments which give the soil properties before and after plasticity and by doing parametric studies on the soil properties. Experiment using small-scale shinso foundation is performed to verify the validity of result of examinations. Comparison between the experiment and the analytical result reveals the bearing capacity characteristics of the shinso foundation on the slope and gives new insights on the more economical design of the shinso foundation.