Vibration
Monitoring Solutions

Syscom is a leading supplier of high quality vibration and seismic monitoring equipment for civil engineering, strong motion and safety industries. Syscom manufactures tailored instruments and software solutions for easy remote data acquisition and better throughput.

Structure & Buildings

High-rise buildings, historical buildings & landmarks, sensitive sites like hospitals, stadiums are usually monitoring when they are located in seismic zones. The permanent strong motion monitoring will give critical insights about the structural health and is able to raise automated local alarming in case of strong earthquakes. Several alarming levels can be setup typically in the systems, based on local structural response spectrums – RSP.
Aging sustainabiltiy and structural fault detection can also be addressed by these accelerographs, by using quite complex operational modal analysis methods.

Construction SITES

The structures in proximity of a construction site need a temporary instrumentation dedicated to the vibration monitoring in order to evaluate the structural damage and the human comfort (only in case of buildings). Automatic alerts must be immediately sent in case of high vibration, exceeding threshold levels. Specific site alarms are useful to force a reduction of the work intensity.

railway monitoring

The railway monitoring survey is typically a 24 hours vibration measurement with three mono-axial velocity sensors at a distance of about 10 meters between two consecutive sensors, where the maximum velocities are collected and analyzed. The relevant frequency content is usually in the range of 15 Hz to 80 Hz.

SITE EVALUATION OF A NEW BUILDING

New buildings need to be dynamically characterized, by understanding the first natural frequencies of the structure. The excitation is usually done with a fall of a big mass or by means of a shaker. The instruments must record the raw data and the specialists will analyze them in the post-processing phase, using specific software.

piling

Pile driving is generating a lot of vibrations and should be monitored when done in central urban environment, especially for existing structures monitoring and human comfort vibration dose evaluation.

tunneling

There are several methods used for tunnel boring depending of the soil structure and the different geophysical requirements. Tunnels can be excavated with explosives or TBM – Tunnel Boring Machines among other means. This will generate a lot of vibrations, especially for new metro undergound tunnels or shafts in the city centers. The existing metro stations, active tunnels, surrounding buildings and sensitive sites should be monitored to ensure safe work progress.

bridges

Vibration monitoring for bridges is very much relevant at the final construction stages and periodically duing the lifetime of the structure. First of all at the end of the construction, to validate the design and the operational natural frequencies and damping of the structure. That should validate the design calculation, typically performed with several synchronized measuring points along the structure with modal analysis processing. Such measurements can be performed in a cable free matter with several MR3000 devices operating in a master-slave network. Secondly, for the state of health of the structure, to be able to compare the nominal natural frequencies over their potential drift based on environmental and structural parameters.

Civil Engineering

Strong Motion Alram

Safety

MR30000

ROCK

Sensors