ERECTION METHOD OF STANDARD FOUNDATION Russian patent published in 2015 - IPC E02D27/01 

FIELD: construction.

SUBSTANCE: pile field design is developed in the potential foundation area; after that, load on one pile is calculated; total number of piles of the same configuration with coordinate fixation to locality is determined at each pile sinking point, as well as depth of static sounding and location of static sounding points is determined. Then, static sounding is performed at pile sinking points by indentation of a conical tip of the probe into soil. Parameters characterising resistance of soil on cone and on side surface of the pile at introduction of the probe are recorded every 0.2 m as per TEST-K4 devicea. Calculation of carrying capacity and parameters at check points are recorded and entered to a database. Then, dynamic tests of each driven pile are performed. After the driven pile is kept for 5-35 days, field tests of test piles are performed by means of a static pile test device by static load, thus picking up pile settlement readings from measuring instruments at the specified loads, and values of the pile carrying capacity are determined. Then, correlation of the obtained results with static sounding data and pile sinking forces is performed considering engineering and geological conditions of the construction site. Then, mass sinking of the rest piles is performed. When the specified force on the pile being sunken is achieved, sinking is stopped and the pile is cut on a certain level above the ground surface.

EFFECT: improving operating efficiency and reducing prime cost of erection and preliminary work, at erection of the foundation as a whole, at simultaneous improvement of durability and reliability.

5 cl, 6 dwg