Detecting and reloading technology for load box

Abstract

The invention relates to a detecting and reloading technology for a load box, and belongs to the technical field of detection of self-reaction force balance load box foundation pile detection devices. The technology comprises the following technical steps of (A) a loading stage: performing loading stage by stage according to the tonnage of the load box 6, and applying the next stage of the load after each stage of the load is relatively stable until a maximum pre-detection load value is obtained; (B) an unloading stage: preserving the pressure for a period of time when the maximum value is obtained, then starting to release the pressure, measuring residual settlement once every 15 minutes when each stage of the load is released, measuring the residual settlement at the second time, and measuring the residual settlement again after 30 minutes so as to release the next stage of the load until the pressure is zero; (C) a reloading stage: after unloading is finished, determining the maximum reloading pressure, loading to reach a bearing capacity feature value of a pile foundation at a time, switching off a high-pressure ball valve 1 after the pressure is stabilized, dismounting a high-pressure oil pipe 2, and burying the high-pressure ball valve 1, a quickly replaceable joint 3 and a rubber pipe together into concrete during manufacturing of a sunk table to achieve a supporting effect through high-pressure hydraulic oil between a lower section pile 4 and an upper section pile 5 of the foundation pile, so that settlement caused by the construction in the later stage and the gravity of house buildings can be borne.

Description

technical field [0001] The invention relates to a load box detection and supplementary loading process, and belongs to the technical field of detection devices for self-reflective force balanced load box foundation pile detection devices. Background technique [0002] In recent years, with the widespread application of self-reflective force balance load boxes for testing the bearing capacity of foundation piles, a large number of construction sites have used self-reflective force balance load boxes to replace the original heap load test. By releasing the oil pressure of the load box, the hydraulic oil inside the load box jack has no pressure and cannot support the upper pile of the foundation pile, which may cause problems such as later construction or house subsidence, leaving a safety hazard. Contents of the invention [0003] In order to overcome the above-mentioned defects, the purpose of the present invention is to provide a load box detection and supplementary loadin...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the widespread application of self-reflective force balance load boxes for testing the bearing capacity of foundation piles, a large number of construction sites have used self-reflective force balance load boxes to replace the original heap load test. The oil pressure of the load box is released, so that the hydraulic oil inside the load box jack has no pressure and cannot support the upper pile of the foundation pile, which may cause problems such as later construction or house subsidence, leaving a safety hazard

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