Bridge pre-stress corrugated pipeline shape detecting device and detecting method

Abstract

The invention relates to a bridge pre-stress corrugated pipeline shape detecting device and detecting method, and belongs to the field of bridge detecting equipment. The detecting device comprises anangle measuring device disposed in a pre-stress member, a pulling device connected to one side of the angle measuring device, and a data acquisition device disposed on the other side of the angle measuring device; the other side of the angle measuring device is further provided with a winding reel; a transmission line is wound on the winding reel; the transmission line is connected to the other side of the angle measuring device; the detecting device further includes a displacement coding device; the displacement coding device is in contact with the transmission line; the data acquisition device acquires position data of the angle measurement device through the displacement coding device, and acquires angle data of the angle measuring device through the transmission line. The invention hashigh test precision, is simple to maintain, is practical and convenience, is high in safety performance, is good in acquired data quality, and meets the corrugated pipeline shape detection after concrete is poured by various post-tensioning methods.

Description

technical field [0001] The invention relates to a line shape detection device, in particular to a bridge prestressed bellows line shape detection device and a detection method, belonging to the field of bridge detection equipment. Background technique [0002] In order to avoid premature cracks in reinforced concrete structures and make full use of high-strength materials, people have created prestressed concrete structures in long-term production practice. The so-called prestressed concrete structure is to artificially exert pressure on the structural members before they are subjected to external loads, thereby generating a prestressed state to reduce or offset the tensile stress caused by external loads, that is, by means of concrete. High compressive strength to make up for its lack of tensile strength, so as to delay the cracking of concrete in the tension zone. Prestress is produced by stretching high-strength steel bars or wires. There are two tensioning methods: (1)...

AI Technical Summary

Problems solved by technology

[0005] The "standard" requires that after the bridge structure is bound with steel bars, the linearity (coordinates) of the bellows can be detected intuitively, but in actual construction, the bellows are not firmly fixed, and the bellows are stepped on, moved, The influence of various factors such as floating and vibration will cause the position of the bellows to change to varying degrees, and the final formed prestressed channel is quite different from the design line.

The situation inside the beam after pouring concrete cannot be seen, so it is impossible to compare the actual line shape of the bellows with the design line shape, and it is impossible to evaluate the construction quality of the prestressed bridge structure, and it is impossible to estimate the effective prestressed state of the bridge structure and its design. deviation value

[0006] The importance of prestressing to prestressed structures goes without saying, but at this stage there is no instrument and equipment that can detect the alignment of corrugated pipes after pouring concrete. In order to meet the needs of detecting the alignment of corrugated pipes after pouring concrete, there is an urgent need for a Line shape detection device and detection method

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