Ultralarge-diameter single pile foundation level static load device and test method

Abstract

The invention discloses an ultralarge-diameter single pile foundation level static load device. The device comprises a tension mechanism arranged on a pile body, a grabbing force mechanism arranged outside the pile body, a pulley module and multiple sections of anchor ropes; the anchor ropes comprise a first section of anchor rope, a middle section of anchor rope and a tail section of anchor rope;one end of the first section of anchor rope is connected with the tension mechanism, and the other end is connected with the pulley module; one end of the tail section of anchor rope is connected with the pulley module, and the other end is connected with the grabbing force mechanism; and the middle section of anchor rope is arranged around the pulley module. A test method adopting the device comprises the following steps: the tension mechanism is arranged on the pile body; the grabbing force mechanism is arranged outside the pile body; the pulley module is provided; one end of the first section of anchor rope is connected with the tension mechanism, and the other end is connected with the pulley module; the middle section of anchor rope is arranged around the pulley module; and one end of the tail section of anchor rope is connected with the pulley module, and the other end is connected with the grabbing force mechanism. Compared with the prior art, the device has such advantages assimple structure, convenience to operate, economical cost and high practicability.

Description

technical field [0001] The invention belongs to the technical field of detection of building foundation piles, and in particular relates to a horizontal dead-loading device and a test method for super-large-diameter single-pile foundations. Background technique [0002] The horizontal static load test is the most direct and accurate method to judge the horizontal bearing capacity of the pile foundation. Through the static load test, the lateral foundation reaction force of the foundation soil can be obtained, and the reasonable calculation scheme of the foundation soil resistance and the corresponding elastic foundation coefficient can be determined. And get the horizontal bearing capacity of the test pile. [0003] The horizontal bearing capacity of offshore single piles, especially offshore ultra-large-diameter single piles, is much greater than that of conventional diameter pile foundations. Similar to the static load test of vertical bearing capacity, the horizontal forc...

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Problems solved by technology

For the horizontal force test of conventional hydraulic structures such as wharf pile foundations or offshore wind turbine foundations, if the previous reaction pile mode is used and single piles are used as reaction piles, the material cost of the single reaction pile will be expensive. Millions of dollars, and the cost of ships and engines has not been considered

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