Complicated narrow space deep foundation underground engineering combined inclination measuring method

Abstract

The invention discloses a complicated narrow space deep foundation underground engineering combined inclination measuring method. A sectioned form is used for descending a fender post (wall) steel barcage; a whole inclination measuring pipe is divided into at least two sections to be respectively put in corresponding geometrical positions of the steel bar cage; after the steel bar cage is stablyput, the inclination measuring pipe is rotated in the connector position for butt joint; the two sections of inclination measuring pipes are respectively subjected to data collection and calculation;the lower section of inclination measuring pipe uses a bottom rock entering position as a calculation starting point; the upward sequential analogy is performed to the sectioning position; the upper section of the inclination measuring pipe uses a pipe opening as the calculation starting point; before the measurement in each time, a total station instrument is used for collecting the pipe openingposition change quantity; after the pipe opening position modification, the downward sequential analogy is performed to the sectioning position; then, the integral error compensation is fit to obtainthe final continuous inclination measuring data. The method provided by the invention has the advantages that the installation, the data collection, the operation and the calculation are simple; the precision is high; the construction is convenient and economic; the method is applicable to narrow-space complicated narrow construction sites incapable of realizing one-step hoisting; the general applicability is realized.

Description

technical field [0001] This patent relates to an improved combined inclinometer method for complex and narrow space deep foundation underground engineering. Background technique [0002] The construction site is complicated, and the ground space of the urban core area (viaduct) is narrow. The traditional one-stop deep foundation underground continuous pile (wall) steel cage skeleton is used for hoisting and lowering installation. There is no such a large space for hoisting and installation; After the concrete is cored to bury the inclinometer tube, the installation cost will be dozens of times higher, and the construction period will be seriously delayed, and the gaps around the re-buried inclinometer tube must be filled with fine sand, which has the problem of overall compactness. The actual deformation of the pit is slightly affected. Therefore, using conventional ideas for placement often results in discontinuous or distorted, erroneous, or even unrealizable observatio...

AI Technical Summary

Problems solved by technology

[0002] The construction site is complicated, and the ground space of the urban core area (viaduct) is narrow. The traditional one-stop deep foundation underground continuous pile (wall) steel cage skeleton is used for hoisting and lowering installation. There is no such a large space for hoisting and installation; After the concrete is cored to bury the inclinometer tube, the installation cost will be dozens of times higher, and the construction period will be seriously delayed, and the gaps around the re-buried inclinometer tube must be filled with fine sand, which has the problem of overall compactness. The actual deformation of the pit will be slightly affected by

Therefore, using conventional ideas for placement often makes the observation data discontinuous or distorted, wrong, or even unrealizable. Therefore, a deep foundation underground horizontal displacement monitoring and data processing method suitable for complex and narrow construction environments is needed.

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