Clustered prestressed anchoring system positioning method for front anchor surface

Abstract

This invention discloses a positioning method for a cluster-type front anchor face prestressed anchoring system, comprising the following steps: processing a cable strand pre-embedded pipe testing platform to simulate the bending state of the cable strand pre-embedded pipe on the positioning support, while checking parameters such as the length and out-of-roundness of the cable strand pre-embedded pipe; observing and analyzing the deformation of the positioning support; positioning of the cable strand pre-embedded pipe using a center calibrator; after the second section of cable strand pre-embedded pipe is positioned, checking the straightness of the cable strand pre-embedded pipe connection using infrared method, and calculating the pipe opening deviation regression line based on the as-built data of the second section of cable strand pre-embedded pipe; correcting and positioning the front anchor face positioning design coordinates based on the pipe opening deviation linear regression equation; after positioning, checking the anchor cylinder center coordinates, and completing the front anchor face positioning after all anchor cylinder centers are correct. This method effectively solves the problems of spatial conflict and installation difficulties between the anchor cylinder and the already positioned cable strand pre-embedded pipe during cluster-type front anchor face positioning.

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