Roadbed dynamic displacement determination method based on dynamic stress and vibration displacement time history signals
A vibration displacement and determination method technology, which is applied to roads, roads, instruments, etc., can solve the problems of increasing test errors at fixed points, increasing test errors, and insufficient rigidity, so as to improve test efficiency, avoid test errors, and reduce The effect of testing costs
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[0029] The embodiments of the present invention will be further described below with reference to the accompanying drawings.
[0030] Before describing the specific embodiments of the present invention, in order to make the solution of the present invention clearer and more complete, the definitions of abbreviations and key terms that appear in the present invention are first described:
[0031] B-spline curve fitting: It is mainly an LSQ fitting problem, and the main idea is also the idea of the least squares method.
[0032] like figure 1 As shown, the present invention provides a method for determining dynamic displacement of roadbed based on dynamic stress and vibration displacement time-history signal, comprising the following steps:
[0033] S1: Bury earth pressure gauges and vibration pickups at predetermined positions of the subgrade structure, and collect the subgrade dynamic stress time-history signal and subgrade vibration displacement time-history signal caused ...
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