We can say that the static test of piles remains the only objective source of our information about the behavior of piles under load and their maximum bearing capacity.
In this case, the results obtained are sufficiently exhaustive and quite sufficient to draw up a project of pile foundations. The successes achieved in this direction allow us to proceed to the next stage of testing methods in order to conduct a study of long -term work of piles under the load and obtain the necessary indicators of the long -term strength of soils associated with the tixotropic strengthening and creep of the latter. The only possible thing for studying thixotropic hardening of clay soils around the pile is still considered a static test method.
Reducing the complexity of this kind of tests should follow both along the path of creating special standard installations following the example of installations for static sounding, and along the path of further study of the results of static sounding with the subsequent transfer of the obtained patterns of Svan. The data currently available on this issue can only serve the starting points when studying the behavior of piles in clay soils.
In this case, it is necessary to once again note the importance of conducting static tests of trial piles in the “pre -project” period, t. e. before the compilation of work drawings. Only in this case, it is possible to guarantee the exclusion of the need to make adjustments to the working drawings during the period of the pile field or after the control verification during the acceptance of the work performed.
By emphasizing the advantages of a static method, one should not forget that it is compared with other methods (dynamic and sounding) is highly laborious, a long test duration and significant costs of monetary and material resources.
In conditions of mass construction, the main means of monitoring the bearing capacity of piles is the dynamic testing method. The main provisions of this method were set forth by Gersevanov in 1932.