Alternative Approaches to Measurement of Ground Vibrations Due to the Vibratory Roller: A Pilot Study

Abstract

At present, one of the primary tasks of the construction industry is to build transport infrastructure. This concerns both the construction of new bypasses of towns and the repair of existing roads, which are damaged by congestion, especially by freight transport. Whether it is a new building or a reconstruction, it is always very important to choose a suitable method of subsoil treatment. One of the most commonly used methods for soil treatment is currently compaction using vibratory rollers. This method is very effective both in terms of results and due to its low financial demands compared to other methods. Vibration is transmitted to the surrounding rock environment when compacting the subsoil using vibratory rollers. Although the intensity of these vibrations is not as pronounced as in other methods of subsoil treatment, such vibrations can have a significant effect, for example during compaction in urban areas or in an area with the presence of historical objects. Therefore, it is very advisable to monitor the effect of these vibrations on the environment during construction. This paper brings an original experimental comparative study of standard seismic instrumentation with a developed interferometric sensor for the field of monitoring vibrations generated during compaction of subsoil using vibrating rollers. The paper presents time and frequency domain results, as well as attenuation curves, which represent real attenuation of vibrations in a given rock environment. The results presented here show that a system operating on a different physical principle from the one used at present has the potential to replace the existing, very expensive, seismic equipment.

Comparative In Situ Study of Dynamic Load Generated by Gravel Piles Measured by a Fiber-Optic Interferometer

“…Two BRS32 seismic stations, see Figure 1 , were used as the reference instrument at two sites: these had also been used by the authors in previous studies aimed at comparing results obtained from alternative approaches to vibration measurement [ 1 , 6 , 8 ]. The special mobile compact datalogger had originally been developed for the Institute of Rock Structure and Mechanics of the CAS of the Czech Academy of Sciences, v.v.i.…”

“…As a result, the pilot studies provide a good starting point for the further deployment of these alternative devices. Other achievements include the measurement of vibration during landform compaction with a vibratory roller [ 8 ], the study of harmonic vibration in comparative measurements of alternative equipment and instrumentation for seismic monitoring [ 9 ], and research on vibration associated with works and construction technologies in brownfield areas [ 10 ]. Last but not least, the authors presented a description of new methods for seismic monitoring, namely a laboratory comparison of fiber-optic sensors with pneumatic measurement systems [ 1 ].…”

Analysis of Vibration and Acoustic Signals for Noncontact Measurement of Engine Rotation Speed

“…In automobile inspection, noncontact-type measurement plays an important role [3][4][5][6]. According to the structure and working principle of an engine, the traditional noncontact-type measurement is based on the inherent relationship between the frequency of vibration and rotation speed.…”

On a Sensor Placement Methodology for Monitoring the Vibrations of Horizontally Excited Ground

“…Three major issues are related to the structural health monitoring of buildings, underground structures and other civil engineering structures in the case of dynamic excitation (traffic load or geotechnical works) [1][2][3][4]. The first issue is directly related to vibration sensors (accelerometers, interferometric sensors, and fibre optic sensors) and their sensitivity and applicability [2].…”

“…Three major issues are related to the structural health monitoring of buildings, underground structures and other civil engineering structures in the case of dynamic excitation (traffic load or geotechnical works) [1][2][3][4]. The first issue is directly related to vibration sensors (accelerometers, interferometric sensors, and fibre optic sensors) and their sensitivity and applicability [2]. The second, not yet sufficiently analysed issue, relates to the sensor layout [5][6][7], data transmission [8] and ability to process the recorded signals in real time (as imposed vibrations can cause serious damage to the monitored structures [9]).…”