期刊
INTERNATIONAL JOURNAL OF GEOMECHANICS
卷 18, 期 6, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)GM.1943-5622.0001157
关键词
Periodic structures; Pile barriers; Attenuation zone; COMSOL PDE; Vibration control
资金
- National Natural Science Foundation of China [51678046]
Pile barriers have been broadly used to decrease the effect of ground vibration generated by machines or traffic. In recent years, the periodic theory of solid-state physics was introduced to study the reduction characteristics of periodic pile barriers. In the present paper, a finite-element method based on a partial differential equation (PDE) is introduced to study the propagation and attenuation of plane waves in single-phased soil by pile barriers. In this method, single-phased soil and pile barriers are considered as a periodic system, and the attenuation zones (AZs) of this periodic system are further calculated based on the plane-strain assumption. The influences of soil types and pile configurations on the AZs are comprehensively considered. To verify the existence of AZs using the periodic pile barriers, both two-dimensional and three-dimensional finite periodic pile barrier models were built, and the vibration reduction was analyzed in the frequency domain. After that, based on a practical ambient vibration wave, a periodic pile barrier system was designed, and the isolation effectiveness was verified by numerical simulations in the time domain. The present investigation provides a new method for designing pile barriers to block midfrequency vibration in single-phased soil.
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