System and method for measuring horizontal deformation of pipe jacking working well

Abstract

The invention provides a system and method for measuring horizontal deformation of a pipe jacking working well. A convergence instrument is selected as a measuring instrument, an expansion screw is driven into a supporting structure as a measuring point by an impact electric hammer after the supporting structure is drilled, the horizontal deformation of the working well is measured by using a working principle that the convergence instrument mechanically transmits displacement, a measured value is compared with a specification requirement for analysis, the stress condition of the supporting structure is judged, the safety of the pipe jacking working well in the working well construction and pipe jacking construction processes is ensured, the problem that the pile body displacement measuring points of the pipe jacking working well with the cast-in-place bored pile supporting structure are prone to being blocked and damaged and consequently the measuring data are inaccurate is solved, the measuring method of the pipe jacking working well is improved, measuring data can be compensated in time accurately after other measuring points are damaged, and the construction safety is ensured.

Description

technical field [0001] The invention relates to the technical field of trenchless engineering, in particular to a horizontal deformation measurement system and a measurement method of a pipe jacking working well. Background technique [0002] The pipe jacking well is a very important part of the pipe jacking construction. Generally, the pipe jacking well with the bored pile support structure has a large inner diameter and a deep buried depth. The safety of its structure is an important part of construction control. Therefore, Necessary monitoring methods must be adopted to ensure the safety of pipe jacking wells. The existing monitoring method is to pre-embed the inclinometer pipe in the bored pile and use the inclinometer to monitor the horizontal displacement of the pile body. It is likely to be damaged during concrete pouring, pile breaking, and pile top structure construction, and the position of the portal needs to be broken during pipe jacking construction. The bottom...

AI Technical Summary

Problems solved by technology

The existing monitoring method is to pre-embed the inclinometer pipe in the bored pile and use the inclinometer to monitor the horizontal displacement of the pile body. It is likely to be damaged during concrete pouring, pile breaking, and pile top structure construction, and the position of the portal needs to be broken during pipe jacking construction. The bottom of the inclinometer pipe in the bored pile will be damaged and cannot be measured normally

Images