Distribution and measurement method and device for improving measurement precision of internal shrinkage amount of prestressed tendon

Abstract

The invention relates to the technical field of constructional engineering quality detection, and provides a distribution and measurement method for improving the measurement precision of the internal shrinkage amount of a prestressed tendon, which comprises seven steps from S1 to S7. The invention further provides a device for measuring the internal shrinkage amount of the prestressed tendon. According to the invention, through a to-be-measured plane formed by a magnet and an arch-shaped steel leveling ruler, the deformation condition of the deformation surface can be accurately and simply reflected, and only four measurement values need to be completed, so that the measurement can be rapidly completed. The to-be-measured plane is a measurement position which does not shift and does not need to be marked or memorized, and inaccurate measurement values caused by position changes of measurement points during multiple times of measurement are avoided. The steel leveling ruler is used for leading out a point to be measured from the interior, which is shielded by obstacles, in three directions of a three-dimensional space, so that barrier-free direct measurement of the size needing to be measured can be realized; two ends of the ruler surface of the arch-shaped steel leveling ruler are provided with semi-spherical measuring base points, so that the measuring value accuracy is high; and the arch-shaped steel leveling ruler is beneficial for uniformly arranging measuring points around the outer circle of the working anchor, and the measured value of the reflected distance between the deformation surface and the other measuring surface is more accurate.

Description

Technical field [0001] The present invention relates to the field of construction engineering quality testing, and is specifically a method for improving the prestressed ribs and the measurement accuracy of the measurement accuracy. Background technique [0002] Prestressed concrete beams are in the form of construction of construction engineering beams in recent years. In order to verify the quality of the product used in the prestressed beam, the parameters such as subtractive quantum in the field detection are required. Since the prestressed bell of the house construction project generally uses one end of the one-end buried anchor, the detection and measurement of the prestressed gluten of the housing construction project prestressed beam can only be based on GB / T14370-2015 "prestressed tendon Anchor, clamp and connector "Appendix C direct measurement method. However, in actual detection, since the prestressed gluten is blocked, the anchor pad is blocked, and the anchor pad ...

AI Technical Summary

Problems solved by technology

For the situation where it is necessary to measure the distance between the deformation surface and another measurement surface, the distance between ten points measured in a certain area between the deformation surface and another measurement surface is usually used as the distance between the two surfaces, but Due to the narrow space of the testing site and the separate retesting of tension and oil return, this measurement method cannot be realized

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