Vibration suppression band gap of rheological soil row piles foundation

被引：0

作者：

Yang H.-Z. ^{[1
]}

Zhao J.-C. ^{[1
]}

Yu Y.-Y. ^{[1
]}

Wang L.-A. ^{[2
]}

机构：

[1] School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou

[2] School of Railway Technology, Lanzhou Jiaotong University, Lanzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2023年 / 57卷 / 07期

关键词：

multiple scattering method; periodic structure; rheological soil; row pile; vibration suppression band gap;

D O I：

10.3785/j.issn.1008-973X.2023.07.016

中图分类号：

学科分类号：

摘要：

The dynamic damping expression of rheological soil was derived based on the time-dependent modulus, and the continuum model of the pile-soil periodic structure was constructed. The energy band structure and band gap of the pile-soil periodic system were calculated by using the multiple scattering method. The band gap characteristics and parameter influence of shear wave in rheological soil pile foundation were analyzed through an example. Results showed that the damping ratio of rheological soil changed non-monotonously with frequency. The amplitude of damping ratio was determined by the initial and final modulus ratio, and the change rate of damping ratio with frequency was determined by the relaxation time. The rheological properties of the soil lead to a higher frequency of band gaps in the actual engineering of row pile foundations than the theoretical value, and the bandwidth decreases, weakening the vibration isolation effect of row piles. Eliminating the rheological properties of the soil around the piles will be conducive to the vibration isolation effect of row piles. © 2023 Zhejiang University. All rights reserved.

引用

页码：1410 / 1417

页数：7

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