Long-span steel structure building micro-strain short-term prediction method

Abstract

The invention discloses a long-span steel structure building micro-strain short-term prediction method. The method comprises: obtaining historical data of the micro-strain of the large-span steel structure building, and dividing the historical data into a training set and a test set; performing adaptive decomposition on the training set and the test set by using a variational mode decomposition method to obtain each mode component sub-sequence of the training set and the test set; training each modal component sub-sequence in the gating circulation unit by using each modal component sub-sequence of the training set as a training sample, and establishing a short-term prediction sub-model of the gating circulation unit steel structure building micro-strain of each modal component sub-sequence of the training set; predicting each modal component sub-sequence of the test set by using the short-term prediction sub-model of the gated circulation unit steel structure building micro-strain of each modal component sub-sequence of the training set, and accumulating each predicted modal component sub-sequence of the test set to obtain a prediction set; and performing comparative analysis by using the prediction set and a test set in historical data. According to the invention, the short-term prediction precision of the micro-strain of the steel structure building is improved.

Description

technical field [0001] The invention belongs to the technical field of short-term prediction of micro-strain of steel structure building in the research of long-span steel structure, and specifically relates to a short-term prediction method of micro-strain of long-span steel structure building. Background technique [0002] The construction of national infrastructure has greatly promoted the rapid rise of the construction industry. A large number of long-span steel structure buildings have sprung up all over the country. They have novel appearance, exquisite workmanship, complex structure, strong sense of technology, light weight, strong rigidity, high seismic performance and uniform stress distribution. They are usually widely used It is applied in various fields and becomes a landmark building in the city or region. However, since these buildings are exposed to the natural environment for a long time, under the comprehensive action of various factors such as wind, frost,...

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a short-term prediction method for the micro-strain of a long-span steel structure building, which solves the problem that the existing short-term prediction of the micro-strain of a long-span steel structure building lacks an effective method, and can be more Grasp the characteristics of the micro-strain time series of steel structure buildings in detail, which greatly improves the accuracy of short-term prediction of the micro-strain of steel structures

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