Uplift pile uplift force detection method

Abstract

The invention discloses an uplift pile uplift force detection method. A detection device comprises an uplift pile, a steel plate, a force transmission member and a test beam, wherein the uplift pile is poured in a pile hole, a plurality of main reinforcements exposed out of the upper end of the uplift pile are arranged in the uplift pile, a hooking and pulling member is welded to one end, exposedout of the uplift pile, of each main reinforcement, the two ends of the force transmission member are detachably connected with the bottom face of the test beam and the top face of the steel plate respectively, the test beam is placed on supporting piers and separated from the ground outside the pile hole at intervals, a jack for applying pile pulling force to the uplift pile is arranged between the test beam and the ground, and the uplift pile is hung on the steel plate through the hooking and pulling members. During construction, a perfect detection state that the upper non-effective pile length is a hollow pile is reserved, and the problem that the negative friction resistance of the non-effective pile length influences a detection result is effectively solved; and meanwhile, the recyclable force transmission member is adopted for detecting the pulling resistance of the effective pile length, compared with an existing solution in the market, construction is convenient, the engineering cost can be greatly saved, and pile body filling materials in an empty hole area are effectively saved.

Description

technical field [0001] The invention relates to the technical field of uplift piles, in particular to a method for detecting the pullout resistance of uplift piles. Background technique [0002] Pullout piles are widely used in anti-floating of large basements, pullout of tall buildings, pullout of offshore dock platforms, anchor pile foundations of suspension bridges and cable-stayed bridges, pile foundations of large dock floors and anchor pile foundations in static load test piles, etc. . It refers to the piles that are driven to counteract the buoyancy force of the water in the soil to the structure when the underground structure of the construction project has a part that is lower than the surrounding soil moisture. In the prior art, the uplift test pile test needs to be carried out before the construction of the uplift pile engineering pile. If the uplift resistance of the test pile meets the design requirements, the engineering pile can use this pile type during cons...

AI Technical Summary

Problems solved by technology

Therefore, the adoption of this invention can not only effectively solve the problem that the negative friction resistance of the non-effective pile length affects the detection results, but also, compared with the existing solutions in the market, the construction is convenient, the construction cost can be greatly saved, and the piles in the empty hole area are effectively saved. body material

Images