Optimizing the Arrangement of Strain Gauges in Pile Load Testing

2020 ◽  
Vol 44 (5) ◽  
pp. 20200033
Author(s):  
Jon Sinnreich
Keyword(s):  
Strain Gauges ◽  
Load Testing

Preparation, Installation and Signal Processing of Strain Gauges in Bridge Load Testing

2015 ◽  
Vol 725-726 ◽  
pp. 903-912 ◽  
Author(s):  
Rok Kamnik ◽  
Boštjan Kovačič ◽  
Andrej Štrukelj ◽  
Nikolay Vatin ◽  
Vera Murgul
Keyword(s):  
Signal Processing ◽  
Time Domain ◽  
Fourier Transformation ◽  
Concrete Beam ◽  
Measured Data ◽  
Strain Gauges ◽  
Fast Fourier Transformation ◽  
Load Testing ◽  
Strain Gauge Sensor ◽  
Bridge Load Testing

Practical approach of strain gauges using is introduced. The use of strain gauges and signal processing of measured data at static experimental load testing of a concrete beam are carried out. The ability of the strain gauge sensor to pick up the specific deformation / strain signals during loading is investigated. The Fast Fourier Transformation (FFT) is applied to obtain the signal in frequency domain and reverse FFT to transform the processed signal back to time domain. The measurements are confirmed with some inductive transducers and total station. This approach is tested on 2.7 m long concrete beam in laboratory. A practical use of strain gauges with bridge constructions under complex inspection is described.

Instrumentation Results of New Manual for Assessing Safety Hardware Crash Tested Barriers for William P. Lane, Jr. Bridge

2021 ◽  
pp. 036119812110548
Author(s):  
Travis A Hopper ◽  
Maria Lopez ◽  
Scott Eshenaur
Keyword(s):  
Reinforced Concrete ◽  
Base Plate ◽  
Strain Gauges ◽  
Load Testing ◽  
Steel Rail ◽  
Test Configuration ◽  
Vehicle Impact ◽  
Plate Connections ◽  
Plate Connection ◽  
Deck Slab

Two new bridge barriers were crash tested in accordance with AASHTO Manual for Assessing Safety Hardware (MASH) guidelines for future use on the William P. Lane Bridge over the Chesapeake Bay: (1) a combination barrier consisting of a reinforced concrete parapet with a top steel rail evaluated for Test Level 4 (TL-4); and (2) a combination barrier consisting of a steel parapet with a top steel rail evaluated for test levels TL-4 and TL-5. For the first test configuration, the reinforced concrete barrier was attached to a representative overhang deck slab using anchor rods. In the vicinity of the vehicle impact points, load cells were installed to measure forces in anchor bolts, and strain gauges were attached to reinforcing bars to resolve measured strain data into forces through the overhang deck slab. In the second test configuration, the steel barrier was supported by evenly spaced representative floorbeams using a bolted base plate connection. Strain gauges were attached to elements of the barrier at support locations adjacent to the vehicle impact point to evaluate force transfer through the barrier system into the base plate connections. Linear potentiometers were installed to measure lateral dynamic deflection of the barrier near the vehicle impact region. This paper presents the analysis results of the force, strain, and displacement data measured in the barrier and deck structural components during crash load testing.

Load Testing of Long Span Prestressed Single Tee Beams

PCI Journal ◽  
1988 ◽  
Vol 33 (2) ◽  
pp. 42-51
Author(s):  
Predrag L. Popovic ◽  
Neal S. Anderson
Keyword(s):  
Load Testing ◽  
Long Span

Use of Hydraulics for Load Testing of Prestressed Concrete Inverted Tee Girder

PCI Journal ◽  
1991 ◽  
Vol 36 (6) ◽  
pp. 72-78 ◽  
Author(s):  
Predrag L. Popovic ◽  
Richard C. Arnold ◽  
Peter J. Stork
Keyword(s):  
Prestressed Concrete ◽  
Load Testing

Semi-empirical methods versus dynamic load testing in piles

Geotecnia ◽  
2015 ◽  
Vol 135 ◽  
pp. 89-113
Author(s):  
Jean Felix Cabette ◽  
◽  
<br>Heloisa Helena Silva Gonçalves ◽  
<br>Fernando Antônio Marinho ◽  
◽  
...  
Keyword(s):  
Dynamic Load ◽  
Load Testing ◽  
Empirical Methods ◽  
Semi Empirical
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