DEFORMATION MONITORING SYSTEM FOR A CONCRETE STRUCTURE

摘要

The present invention relates to a method of instrumenting an already erected concret or rock structure in order to determine the state of deformation of that structure. A cylindrical inclusion (3) made of concrete having substantially the same mechanical properties as the concrete or the rock of the structure (1) is inserted into a hole (2) drilled into the concrete or rock. Sensors (5-10) (e.g. vibrating wire gauges) capable of detecting deformations are embedded in the concrete of the inclusion (3). The empty space between the inclusion (3) and the hole (2) is tightlyfilled with a grout (30) whereby any deformation of the concrete or rock structure also deforms the inclusion and is therefore detected by the sensors embedded therein. The invention also extends to the inclusion and the so instrumented concrete or rock structure. An additional measuring cell (45) enables compensation for any change in the environmental conditions.