沪杭铁路箱涵桥沉降物探检测方法试验研究

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Abstract Research purposes: The uneven subsidence appeared in the soft soil stratum around the newly － built railway box culvert and bridge of Shanghai － Hangzhou Railway and it brought about the earth cavity because of collapse． The geophysical prospecting was conducted for several times，but the results were not good． Based on the full analysis of the structure and the formation cause of the soft stratum around the box culvert and bridge in this area，the experimental study was done on the detection of the subsidence with the methods of ground penetrating radar and the transient rayleigh wave prospecting．

Research conclusions: From the analysis of the results of the several box culverts and bridges，it is concluded that application of the multiple － coverage and multiple － channel transient rayleigh wave prospecting along with the CMP analytic method to detect the subsidence can effectively reduce the influence of the interference wave and enhance the noise － signal ratio，getting good effect of detecting subsidence of the box culvert and bridge．

Key words： railway box culvert and bridge soft soil stratum ground penetrating radar transient multiple －channel rayleigh wave

Received: 13 May 2011

PACS:

P631． 325

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Cite this article:

CUI De － Hai. Experimental Study on Geophysical Prospecting Method for Subsidence of Box Culvert and Bridge of Shanghai － Hangzhou Railway[J]. 铁道工程学报, 2011, 28(10): 72-77.

URL:

http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2011/V28/I10/72