Analysis of the Bearing Behavior and Ultimate Bearing Capacity of the Bottom Hammering Cast-In-Place Piles

This article introduces the construction technology of the bottom hammering cast-in-place piles. This set of technologies includes internal impact technology, pressure grouting technology, pile testing technology, and the design of specialized multifunctional pile pipes. This technology can make up for the limitations of static pressure pile pressure, and it is difficult to achieve the shortcomings of high bearing capacity, as well as the problems of high noise, vibration, and easy damage to the pile body caused by hammering. This construction method can adapt to various geological conditions such as soft and hard soil layers, and improve the strength of the pile body and the bearing capacity of a single pile. At the same time, this article conducted on-site static load tests on single piles formed by different construction methods. Through comparative analysis of on-site static load tests, the bearing mechanism and advantages of bearing behavior of internal impact grouting piles were explained.