Portable concrete dam material dynamic parameter test system and a test method

Abstract

The invention discloses a portable concrete dam material dynamic parameter test system and test method. The test system comprises a data acquisition module, a data analysis module and a visual controlmodule. The testing method comprises the following steps: acquiring vibration response data of a tested object on site; Identifying actual measurement operation modal parameters of the test object; Importing a finite element model of the test object; Generating a material dynamic parameter combination, and calling a finite element software module to calculate each order modal parameter of the damstructure corresponding to each combination scheme; Combining the obtained result with corresponding parameters to form a training set, and training a support vector machine; Generating an initial parameter population, and calculating each order of modal calculation value corresponding to each group of individuals by using the trained support vector machine model; Calculating an objective function value, reserving the optimal individual according to the objective function value, guiding the quantum revolving door to update, generating a new population, and approaching the optimal parameter; And when the objective function value is optimal or the number of iterations reaches the maximum, outputting the optimal individual (material power parameter).

Description

technical field [0001] The invention relates to the field of dam safety monitoring, in particular to a concrete dam material dynamic parameter testing system, and also relates to a testing method based on the dynamic parameter testing system. Background technique [0002] Material parameters such as elastic modulus and deformation modulus, as the core internal factors affecting the structural behavior of dams, are important indicators to characterize the safety status of dams. Accurate determination of their values ​​and in-depth analysis of evolution characteristics are crucial for rational evaluation of dam material performance. , Structural behavior, and scientific diagnosis of the safety status of the dam in service have important support significance. Traditionally, the material parameters of concrete dams are often obtained by on-site drilling sampling and laboratory testing. However, the concrete test blocks taken by this method are random, and in addition to the size...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the current lack of test methods and tools for concrete dam dynamic parameters, the present invention provides a portable concrete dam material dynamic parameter test system and method, with a view to scientifically analyzing concrete dam material performance, structural behavior and scientific diagnosis Provide timely data support for the safety status of the dam in service

Images