Monitoring device for tension members of soil or rock anchors, c

Details Monitoring device for tension members of soil or rock anchors, c Monitoring device for tension members of soil or rock anchors, c

1993-12-21

1996-08-13

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

G01N 2772

Patent

active

055459870

ABSTRACT:
The monitoring device for structural elements, in particular for tension members of soil or rock anchors, compression members of poles, prestressing elements for prestressed concrete structures and bridge cables has at least one sensor conduit (15) disposed inside or outside of a structural element (1) for receiving at least one sensor (16), wherein the sensor (16) is disposed movably and/or releasably in the sensor conduit (15). An evaluation device (18) determines the presence of corrosion, cracks, overloads, overextensions and tension relaxation from the at least one sensor signal.

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Instrumentation Techniques for Strain Measurements in Concrete Pressure Vessels and Similar Structures by I. W. Hornby, Central Electricity Research Laboratories vol. 8, No. 3 (Jul. 1972).
Patent Abstracts of Japan, vol. 13, No. 358, Publication No. JP1119756, Application No. JP870277445.
Technical article by Miesseler and Wolff, published in Bautechnik, Issue No. 10, pp. 592-594.

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