Monitoring method for concrete pouring density of stiff beam-column joints based on endoscope

Abstract

The invention discloses a method for monitoring the compactness of concrete pouring of rigid beam-column joints based on an endoscope, comprising: supporting a template; opening holes; installing a transparent acrylic tube; connecting the endoscope and monitoring and display equipment through a hard cable ; Push the endoscope to the first observation point; start pouring the beam and column concrete, and monitor the concrete pouring density of each observation point from bottom to top: observe whether the concrete poured at each observation point is transparent acrylic through the monitoring display device. The tube is wrapped; when the transparent acrylic tubes are all wrapped, remove the endoscope and the transparent acrylic tube; complete the density monitoring; repeat the relevant steps until the density monitoring is completed for all observation parts; continue to pour the beam and column concrete until the completion Construction of stiff beam-column joints. The invention realizes the whole process monitoring of the hidden danger position, has high construction efficiency and low construction cost, can ensure the pouring and compacting effect of beam-column concrete, and improves the construction quality.

Description

technical field [0001] The invention relates to a method for monitoring the compactness of concrete pouring of rigid beam-column joints realized based on an endoscope, and belongs to the technical field of concrete pouring. Background technique [0002] Stiff beam-column structures are widely used in high-speed railway stations because they can bear the dynamic load of trains. refer to Figure 4 , the existing stiff beam-column structure usually includes a steel column 10 with a rectangular cross-section, and steel corbels 70 are welded on each side of the steel column 10. Usually, the steel corbel 70 adopts I-steel, that is, the steel corbel 70 includes upper, The lower flange plate and the middle web connecting the upper and lower flange plates. And in order to strengthen the shear force of the steel corbel 70 and the steel column 10, the steel column 10 is connected with two adjacent steel corbels 70 through the welded steel flange web 30, usually the steel flange web 30...

AI Technical Summary

Problems solved by technology

It can be seen that this kind of stiff beam-column structure, especially the structure of its stiff beam-column joints is very complicated.

In actual construction, when performing beam-column concrete pouring on stiffened beam-column joints, because the steel bars at this joint are densely distributed and the operable space is small, especially the part located below the steel flange web 30 and close to the steel column 10, and the steel Between the corbel 70 and the formwork supported under the pouring steel structure 20 and close to the position of the steel column 10 (such as Figure 4 The part indicated by the middle mark 90), these parts are prone to the problem of insufficient concrete pouring density, and the concrete cannot be completely filled during the concrete pouring process. Even if exhaust and vibration measures are taken, it is often due to insufficient exhaust, vibration Insufficient pounding caused hollowing of the concrete in the beam, which greatly affected the quality of the structure

At present, there is no better way to solve the problem other than increasing the number of vibrations

However, when a problem is found after the dismantling of the formwork, it needs to be re-constructed, which has a great impact on the progress of the project, the quality of the project and the construction cost.

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