Shaking table tests on buried pipelines in inhomogeneous soil under transverse non-uniform excitation

被引：0

作者：

Han J.-Y. ^{[1
]}

Guo Z.-K. ^{[1
]}

Li L.-Y. ^{[1
]}

Hou B.-W. ^{[1
]}

Gao Y.-H. ^{[1
]}

Du X.-L. ^{[1
]}

机构：

[1] Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing

来源：

Li, Li-Yun (lly@bjut.edu.cn) | 2020年 / Chinese Society of Civil Engineering卷 / 43期

基金：

英国经济与社会研究理事会; 英国医学研究理事会;

关键词：

Buried pipeline; Inhomogeneous soil; Multi-point shaking table test; Non-uniform seismic excitation; Seismic response;

D O I：

10.11779/CJGE202111008

中图分类号：

学科分类号：

摘要：

A series of multi-point shaking table tests are conducted on model pipelines to investigate the seismic response of pipelines buried in inhomogeneous soil under transverse non-uniform seismic excitation. The acceleration and strain response laws of the buried pipelines under different ground motion intensities are analyzed. The main conclusions are as follows: the acceleration response of the pipelines is basically subjected to the acceleration response of the surrounding soil under uniform and non-uniform excitation. The buried pipelines mainly exhibit longitudinal bending deformation. Under the higher uniform seismic excitation, the peak strain of the pipelines in the transient zone where the soil properties change in the inhomogeneous soil model is larger than that in the homogeneous soil model. The maximum peak strain is basically about 30% higher than that in the homogeneous soil, However, the maximum strain peak is basically about 30% lower than that in homogeneous soil under non-uniform excitation. The strain response of the pipelines in homogeneous soil under the higher non-uniform seismic excitation is almost twice as large as that under uniform excitation, but then the strain response of the pipelines in inhomogeneous soil does not change significantly. The test results can provide a reference for the seismic design of large-diameter buried pipelines passing through inhomogeneous soil sites. © 2021, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：2020 / 2028

页数：8

共 23 条

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