Sampling method for building steel bar detection

Abstract

The invention relates to a sampling method for building steel bar detection. S1, carrying out unloading and supporting; and removing the load on the floor slab corresponding to the stand column, and supporting the bottom of the main beam. S2, removing the concrete protective layer; measuring the thickness of the concrete protective layer; carrying out lofting on the stand column, determining the coring range, and chiselling a concrete protective layer in the coring range away. S3, building a platform; building a platform formed by combining a plurality of unit sections on the periphery of thestand column, fixing a guide rail to each unit section, wherein the outer portion of one guide rail is sleeved with a sliding block, and after the unit sections are spliced to form the platform, enabling all the guide rails to form a closed ring. S4, mounting an air pick; sequentially mounting a turntable and a mounting base at the top of the sliding block, and inserting an air pick into the mounting base, wherein the rotary disc rotates around the vertical direction, and the air pick slides in the horizontal direction. and S5, crushing the concrete; crushing the concrete to expose the original longitudinal bars, and selecting the original longitudinal bars to cut off. The method is convenient for sampling and can selectively cut off the reinforcing steel bar to be tested.

Description

technical field [0001] The invention relates to the technical field of building reinforcement detection, in particular to a sampling method for building reinforcement detection. Background technique [0002] In the reinforcement project, before the building is reinforced, it is necessary to detect the steel bars in the reinforced concrete structure of the building, and use this as one of the criteria to determine the specific reinforcement scheme. [0003] There are two methods for detecting steel bars in existing buildings. One is the direct method, which directly detects the steel bars by peeling off the concrete outside the reinforced concrete members or directly samples the steel bars from the reinforced concrete members. The other is the indirect method, which uses electronic equipment such as a magnetic sensor to detect the steel bars inside the reinforced concrete members. Although the indirect method has little damage to reinforced concrete, the stress state of the...

AI Technical Summary

Problems solved by technology

When this method needs to sample the steel bars at the same position, since all the steel bars are in the concrete core sample, it is very difficult to strip the concrete, which will lead to insufficient effective steel bars that can be stripped out for strength testing

And the aforementioned method will cause the cored part of the column to lose all the steel bars, which is not conducive to the later repair

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