Physical pile group vertical uplift-resisting static load testing system

The utility model discloses a physical pile group vertical uplift-resisting static load testing system, which comprises counter-force loading devices mounted on all test piles of test pile groups respectively, wherein each counterforce loading device comprises a counterforce beam, a counterforce pile, an oil jack for loading, and a pressure sensor, the counterforce beam is fixed on the counterforce pile, the jack is positioned above the counterforce beam and propped against the upper part of a test pile, the pressure sensor is positioned above the jack, the jacks of all test piles are connected in parallel and are the same specification, the same model and similar rating curves. The utility model solves the difficulty in a concentrated loading method in large-scale pile group uplift resistance tests, thereby achieving the purpose of synchronously loading all of the piles. The system can be used for pile group uplift resistance test for more than three large-scale piles.