A bridge pile project is an underground concealed one;the degree of difficulty for its construction is great.It is affected by bad geological condition and apt to produce unsafe defect and cause incident. The acoustic transmission method is convenient for use.It is an accurate,high efficient measuring method to control the quality of the bridge with buried pipes.This paper takes the bridge across the Sujia River in Wulong County as an example,where the pipes are buried in advance and measured by the acousti...
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