Projects
9 December 2023
Asphalt pavement testing using the DFOS fiber optic measurement technique
The aim of the project was to analyze the performance of various asphalt surfaces.
Along the road, 12 EpsilonRebar fiber optic sensors, each 8 meters long, and 9 temperature sensors were installed along a stretch of nearly 3 kilometers. The high durability parameters of the EpsilonRebar sensor allowed it to be installed in difficult conditions, such as high temperatures and significant loads occurring during road paving. EpsilonRebar allowed precise measurements to be made, which provided important information for evaluating the performance of road pavement under dynamic loads. The measurements made are unique, not only in Poland, but also worldwide.
17 August 2023
The use of EpsilonRebar sensors to measure the deformation of foundation piles
The aim of the project was to study the behavior of foundation piles during test loads. EpsilonRebar fiber optic strain sensors were used to measure changes in concrete deformations in the immediate vicinity of reinforcing bars during static load tests on piles. Thanks to the DFOS measurement technique, measurements were made with an extraordinary spatial resolution of less than 1 cm. Measurements of changes in deformation values at the depth of the pile obtained during the test load provide very wide possibilities of interpreting the operation of the structure, unattainable for point measurements performed, for example, using vibrating wire sensors.
17 August 2023
Using FBG sensors to measure deformation and temperature of mining anchors
The aim of the project was to develop a monitoring system for mining anchors using fiber optic sensors. The project used FBG grids integrated with anchors to measure their mechanical deformations and temperatures. The system automatically provides information on the state of strain of structural components under real, highly demanding conditions in mine workings. In the face of increasing requirements for safety, efficiency and monitoring of technological processes in mines, advanced measurement techniques enabling the provision of precise data prove to be extremely helpful.
9 July 2023
Hybrid system for monitoring the structure of the road bridge on the Nowe Miasto Lubawskie bypass
The aim of the project was to prepare a monitoring system for a 260-meter long road bridge structure. In order to obtain a precise information of the bridge's operation, a hybrid monitoring system was used, combining geometrically continuous DFOS fiber-optic technology and automatic vibrating wire technology. Fiber optic sensors were installed along the entire length of the bridge, while vibrating wire sensors were installed in selected cross-sections of the bridge span. Over 1 km of EpsilonSensor fiber optic sensors (glued on the surface and in the groove), temperature sensors for temperature compensation of fiber optic sensors and vibrating wire sensors were installed.
13 April 2023
Foundation barrettes during the load testing: strain and crack analysis
The aim of the project was to verify the performance of foundation barrettes and the jet grouting injection underneath them. To this end, high-quality monolithic sensors (6 EpsilonSensors and 13 EpsilonRebars - 355 m of sensing path) were installed and used to measure strain distributions during the mechanical loading tests. The design of the system allowed deep insight into the underground parts of the structure that were inaccessible to conventional measurement techniques. The DFOS allowed to verify the barrette strains in reference to theoretical predictions, to analyse the interaction between with surrounding soil and to detect thermal-shrinkage cracks along the depth.
9 March 2023
EpsilonSensor and 3DSensor in the analysis of strain and displacement distribution in embankments
The PEBSTER research program, implemented as part of the "GEOLAB" project, included the study of the mechanism of load transfer in embankments founded on piles, reinforced with steel mesh, and the differences between rigid and flexible piles. Two laboratory tests were performed: small scale (1x1 m) and large scale (5x5 m). EpsilonSensors were used to measure the deformations of the ground and the steel mesh, and 3DSensors were used to measure vertical displacements. The DFOS technique made it possible to obtain information from thousands of measurement points located along the length of the sensors, and thus to look deeper into the embankment by analyzing the deformation and displacement of the embankments.
7 September 2021
Nerve-Sensors along the gas pipeline
The section of new gas pipeline was equipped with 3DSensors and EpsilonRebars enabling geometrically continuous measurements of strain, displacement and temperature during a leak proof test and during the first months of gas pipeline exploitation. Obtained data allowed for identification of local disturbances relevant to changes in the pipeline geometry. The 3DSensors provided the possibility to identify the places where excessive deformations occurred due to e.g. local subsidence or landslides.
19 August 2021
Naval Base of Gdynia
Along the rebuilt western dyke, performed work can generate high vibrations, which will have a negative impact on the technical condition of nearby structures. The designed and implemented automated vibration monitoring system will control these structures in real time 24/7, and in case of any irregularities will alert about it. Thanks to this, it will be possible to react immediately.
9 August 2021
Warszawa Zachodnia train station
The scale of the investment and the responsibility of rebuilding the Warszawa Zachodnia train station requires effective protection and continuous vibration monitoring of the existing infrastructures generated by the construction work. In the next few years, monitoring will cover a total of 20 buildings, on which we will install several hundred measurement sensors. Implementation of such a large and extremely responsible system performing automated measurements in a 24/7, was possible thanks to the knowledge and many years of experience of SHM System engineers.
19 September 2020
Slurry walls within a research project
Once again we had the pleasure to participate in a research project in which our unique sensors had a key role in the analysis of new technical solutions. The Soley company is currently developing the technology of fibrogrouted concrete walls and we are happy to continue our fruitful collaboration. After experience from two previous projects, where we performed automatic measurements with vibrating wire sensors, automatic inclinometric measurements using the Inclify system and geometrically continuous DFOS measurements, we are looking forward for a new challenge.
13 August 2020
Inclinometric measurements of high embankments
The highest road embankments in Poland, reaching up to 30 meters, monitored by SHM System engineers! Such large embankments were constructed as part of the S-7 expressway between Warsaw and Krakow. The monitoring system controlling embankment settlement included both vertical and horizontal inclinometer displacement measurements, located in the area of three measurement plots.
22 April 2020
SHM PROFILER – from the laboratory to the construction site
SHM Profiler is an innovative solution for automatic monitoring of vertical displacement, developed by SHM System engineers. The hydraulic measurement system, dedicated for applications in construcion and geotechnics, is characterized by a wide measuring range, easy installation and low costs. What is most important, it is equipped with our original system of temperature compensation, thanks to which its influence on sensor readings will be automatically compensated.
1 December 2019
3DSensor – Ground displacement
The aim of this project was to determine the potential slip plane which occurred during pullout of concrete footing. For this purpose, 3DSensors (DFOS displacement sensors) were installed around the structure in two planes and vertical displacements were measured. Thanks to the cutting-edge technology of 3DSensors, an advanced analysis of the interaction between the footing and the surrounding ground was possible without any distortions and reinforcing effect in the ground.
19 July 2019
Smart footbridge in Nowy Sącz equipped with DFOS sensors
EpsilonRebars in the form of composite rods being simultaneously the structural reinforcement for the concrete deck, were placed along the entire footbridge span of nearly 80 m. Thanks to the application of distributed optical fibre sensing technique it was possible to perform measurements of strains, cracks, displacements (deflections) and temperatures during the hydration of early-age concrete (thermal-shrinkage strains) as well as during the load tests.
6 June 2019
A1 – Smart Highway equipped with integrated self-diagnostic system
The project involves a 100 m long section of the highway in Poland, which was reinforced only with composite bars, including EpsilonRebars from Nerve-Sensors family. The entire experimental section was concreting without any dilatations, what is a really pioneering approach in road engineering. Our DFOS-based monitoring system provided essential information on strain profiles and crack morphology, being at the same time the structural reinforcement.
1 December 2018
Skyliner Skyscraper in Warsaw
One of the tallest skyscrapers in Poland, 195-meter high is being built in Warsaw. The scale of the investment and related engineering challenges have led to the start of cooperation between the General Contractor - Warbud S.A. and structural health monitorng experts - SHM System. The result of our work is a system providing the safety and quality of performed work by automatic measurements of selected engineering values and alerting system.
6 July 2017
Multi-purpose indoor ARENA in Gliwice
The ARENA in Gliwice is one of the most modern sports and entertainment halls in Poland, unique because of the structural and geometric solutions applied, but also in terms of the fact that it is equipped with an advanced automatic monitoring system. Dozens of sensors carry out measurements of selected physical quantities (static as well as dynamic), relevant to the assessment of its operation, especially in the context of snow and temperature loads.
6 March 2017
Office building “Brama Miasta” in Łódź
This investment is the second largest system for vibration monitoring in Poland, after the HighFive investment in Krakow. During our fruitful collaboration with SKANSKA S.A. we developed and successfully implemented an integrated system that allows real-time 24/7 control of vibrations transmitted to the surrounded buildings. All sources of vibration are recorded, not only generated by construction work, but also those made by telecommunication.