Loading box for self-balancing method detection and pile foundation bearing capacity detection device and method

Abstract

The invention relates to a loading box for self-balancing method detection and a pile foundation bearing capacity detection device and method. The loading box comprises an upper panel, a lower panel and a plurality of hydraulic jacks, the upper panel and the lower panel are both a disc with a round hole in the center, the hydraulic jacks are fixedly arranged between the upper panel and the lower panel, and the hydraulic jacks are arranged around the round holes. The loading box further comprises reinforcing plates and a plurality of connecting assemblies, the reinforcing plates are fixedly attached to the lower surface of the upper panel and / or the upper surface of the lower panel, the connecting assemblies are fixed to the reinforcing plates, and main reinforcing steel bars of a reinforcement steel cage are close to the end portion of the loading box and detachably fixedly assembled to the connecting assemblies. When the loading box is connected with the reinforcement steel cage, welding is conducted without workers, detachable fixed assembly can be achieved simply through the connecting assemblies, the connecting fastness is easy to control, convenience is brought to installation, and the improvement of the detection precision and the detection efficiency are indirectly facilitated.

Description

technical field [0001] The invention relates to the technical field of pile foundation bearing capacity detection, in particular to a load box for self-balancing method detection, a pile foundation bearing capacity detection device and a method. Background technique [0002] The traditional self-balancing method was first proposed and implemented by the Israeli company AfarVasela in the 1960s, and applied for a patent for "a new test method for bearing capacity", commonly known as "Tongmo static load method". The detection principle is to embed a special loading device—the load box, into the corresponding position in the pile together with the steel cage before concrete pouring, and lead the pressure tube of the loading box and other required testing devices from the pile body to the pile. ground, and then poured into piles. There is a pressurized pump on the ground like a load box to pressurize and load, so that a loading force is generated inside the pile body, and the be...

AI Technical Summary

Problems solved by technology

[0004] The above existing technical solutions have the following defects: in the construction process, since the load box is welded and fixed with the steel cage, and the number of steel bars welded to the edge of the load box is generally more than 20, as the diameter of the pile foundation increases, The number of steel bars that need to be welded will increase linearly, and each steel bar will be fixed to produce a welding spot between the edge of the load box, which is very dependent on the welding quality of the welding spot. The welding quality is uneven, and it is difficult to control the firmness of the connection between the load box and the steel cage on site, and it is also difficult to control the detection accuracy of the bearing capacity of the pile foundation, so it needs to be improved

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