Assessment of the technical condition of bridges and their ground foundations using the electrical resistivity tomography and the passive seismic standing wave method

被引：2

作者：

Fedin, K. V. ^{[1
,2
,3
]}

Olenchenko, V. V. ^{[1
]}

Osipova, P. S. ^{[1
]}

Pechenegov, D. A. ^{[2
,4
]}

Kolesnikov, Yu I. ^{[1
,2
]}

Ngomayezwe, L. ^{[2
]}

机构：

[1] Trofimuk Inst Petr Geol & Geophys SB RAS, Akad Koptyuga Pr 3, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Pirogova Str 2, Novosibirsk 630090, Russia

[3] Novosibirsk State Tech Univ, Karl Marx Pr 2, Novosibirsk 630073, Russia

[4] SEF FRC EGS RAS, Akad Koptyuga Pr 3, Novosibirsk 630090, Russia

来源：

JOURNAL OF APPLIED GEOPHYSICS | 2023年 / 217卷

基金：

俄罗斯科学基金会;

关键词：

Bridge stability; Permafrost; Elastic standing waves; Electrical resistivity tomography;

D O I：

10.1016/j.jappgeo.2023.105188

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The results of geophysical studies are presented, the purpose of which was to assess the technical condition of two railroad bridges and their ground foundations in permafrost areas. It is shown that the passive seismic standing wave method makes it possible to determine the frequencies and shapes of several flexural modes of the bridge's natural vibrations, which can be used to assess its technical condition. This method is reduced to the recording of acoustic noise on the surface of the study object and accumulating the amplitude spectra of a large number of noise records. This makes it possible to extract from the noise standing waves formed in the study object under its influence and determine their parameters. The electrotomography of the soil foundation makes it possible to identify zones of thawed soils in the permafrost, which, together with the analysis of the bridge's natural modes, makes it possible to assess the potential danger of stability loss of its supports.

引用

页数：8

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