OPTICAL MONITORING SYSTEM FOR SETTLEMENTS AND INCLINATIONS

J. Knapp, K. Brandes, K.-D. Werner

Abstract

A novel laser-based concept for monitoring settlements as well as inclinations of bridge piers over long periods of time is presented. Similar to the well known water leveling equipment the new system consists of several modules, which can be fixed and adjusted by simple means at the piers. Each module includes a laser source, optical components for beam forming and splitting and two position sensitive detectors. Two emitted and two incident horizontal beams in opposite directions ”interconnect” each module to its neighbors. Details are given about the mechanical and optical layout, the operational performance, especially with regard to influences of beam length and turbulent air. The uncertainty of results is investigated both by experiments and numerical simulation.

Keywords

monitoring, settlement, inclination, experimental mechanics

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IMEKO-WC-2000-TC15-P423.pdf

DOI

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IMEKO TC

TC15 - Experimental Mechanics

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