MEASUREMENT OF TENSILE STRAIN IN CONCRETE STRUCTURE USING FRICTIONAL TYPE STRAIN GAUGE AND APPLICATION TO BRIDGE

Stress-Strain Field and Theoretical Analysis of RC Bridge

In this paper, a reinforced concrete(RC) bridge built in an interchange, in the city of Kerman (a city located in south of Iran) is examined by the Structural Health Monitoring (SHM) system. During the construction of this bridge such as; the main beams, slab, and retaining walls, some Electrical Strain Gauges were mounted on the main reinforcements at different locations within the body of thi...

Direct Torque Measurement of Hermetic Rotary Compressors Using Strain Gauge

Frictional Strain Hardening-softening in Experimental and Numerical Investigation of Arching Effect

In the current paper the results of a numerical simulation that were verified by a well instrumented experimental procedure for studying the arching effect over a trapdoor in sand is presented. To simulate this phenomenon with continuum mechanics, the experimental procedure is modeled in ABAQUS code using stress dependent hardening in elastic state and plastic strain dependent frictional harden...

Field Measurement of Vertical Strain in Asphalt Concrete

Recently developed Mechanistic-Empirical Pavement Design Guide (MEPDG) determines the probable total rutting by summing up the deformations of all layers of the trial pavement. If all distresses outcomes including rutting are within the specification the trial section is designed for construction. Therefore, vertical deformation (or strain) needs to be measured to validate the MEPDG for local c...

Displacement of Bridge Monitoring Techniques with Strain Measurement

General methods of displacement measurement are to use LVDT, tiltmeter, or laser deflection meter. But these methods can’t be applied effectively if bridge height is so high that the installation of sensor is difficult. So the great part of in these cases, the reliability and accuracy of measured results are uncertain usually. To overcome this problem, in this paper, the two techniques for calc...