MAINTAIN LOAD TEST & PILE INSTRUMENTATION
MAINTAIN LOAD TEST & PILE INSTRUMENTATION
pileSENTINEL Allows Data Recording Conveniently and Securely
Maintain Load Test (MLT) is an automated data acquisition and logging system fully developed for automated monitoring of load test. The advanced electronic recording system is configured with the following modern features and state-of-the-art functions:
- MAINTAIN LOAD TEST & PILE INSTRUMENTATION Real-time load and settlement recording using world- renowned data logger at a defined recording interval, as frequent as every 1-minute.
- Easy to use PC-based software for configuration, monitoring and interfacing to Microsoft Excel spreadsheet program.
- Electronic sensor level of accuracy and consistency.
- Low power requirement (12V battery or AC-to-DC adaptor).
- Provision of 100mm displacement transducers.
- Provision of resistance type load cell (1,000T capacity) with display meter.
The main objective of pile instrumentation is to establish the load distribution characteristics of soil along the pile shaft.
HOW IT WORKS
The test pile is subjected to loading and under the maintained load test. Special vibrating wire type of strain gauges are attached along the main steel reinforcement bar in the test pile. These gauges work on the principle that the natural frequency of a wire changes as its length changes. Thus, by measuring the change in frequency, the deformation can be obtained, and hence the strain.
The readout unit gives the strain directly. From the measured strains, the forces in the pile can be calculated, and thus the load distribution along the pile shaft is known when the strain gauges are installed at intervals along the pile shaft length. i.e. the average unit friction between any two sections of the pile is calculated by the change in load divided by the circumferential area between the two sections.