Soil layer equivalent shear wave velocity and soil layer reflecting interface buried depth measuring method

Abstract

The invention relates to a soil layer equivalent shear wave velocity and soil layer reflecting interface buried depth measuring method. The mathematical model of the relationship between soil layer shear wave velocity and buried depth and the fitting parameters are directly used to measure soil layer equivalent shear wave velocity and soil layer reflecting interface buried depth. Seismic engineering geological units are divided according to site seismic engineering geological conditions. In the same seismic engineering geological unit, soil layer shear wave velocity data are calculated to establish the mathematical model of the relationship between soil layer shear wave velocity and buried depth and the fitting parameters. The fitting parameters are substituted into a soil layer equivalent shear wave velocity calculation mode corresponding to the mathematical model of the relationship between soil layer shear wave velocity and buried depth to acquire the soil layer equivalent shear wave velocity of the seismic engineering geological unit. The fitting parameters are substituted into a soil layer reflecting interface buried depth calculation mode corresponding to the mathematical model of the relationship between soil layer shear wave velocity and buried depth to acquire the soil layer reflecting interface buried depth. According to the invention, the convenience and accuracy of soil layer equivalent shear wave velocity and soil layer reflecting interface buried depth measuring are improved.

Description

technical field [0001] The invention relates to the field of earthquake engineering, in particular to a method for measuring the equivalent shear wave velocity of the soil layer and the buried depth of the reflection interface of the soil layer. Background technique [0002] The equivalent shear wave velocity of the soil layer is one of the important parameters in earthquake engineering, which is mainly used for the classification of building sites, thus providing a basis for the seismic design of buildings. The buried depth of the reflection interface of the soil layer is one of the important results of seismic exploration, and it mainly serves to find out the underground geological structure (including active faults) and minerals. [0003] According to my country's current code for seismic design of buildings (GB 50011-2010), 2010), the site category of the building should be divided according to the equivalent shear wave velocity of the soil layer and the thickness of the...

AI Technical Summary

Problems solved by technology

[0010] Currently, v in formula (2) 0 There are few cases where the value of is directly derived from the borehole shear wave velocity test data. The reason is that there is no specific method to directly use the borehole shear wave velocity test data to measure the buried depth of the reflection interface of the shear wave reflection wave group in the soil layer.

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