Shield equipment and real-time service life prediction system and method thereof

Abstract

The invention discloses shield equipment and a real-time service life prediction system and method thereof. The prediction system comprises an acquisition processing device, a data storage device, a limit identification early warning device and a residual fatigue life calculation device. When the load amplitude is greater than the limit fatigue load, the residual fatigue life calculation device isused for converting the load mean value and the load amplitude value into a cyclic stress mean value and a cyclic stress amplitude value of each fatigue hot spot on the core component by utilizing aload stress function, and calculating accumulated fatigue damage through rain flow cyclic counting according to the cyclic stress mean value and the cyclic stress amplitude value to obtain the residual fatigue life of the core component. According to the prediction system, based on the working condition data actually measured on site, the prediction accuracy of the residual life of the core component is relatively high, and the engineering feasibility is good.

Description

technical field [0001] The invention relates to the technical field of life prediction of shield tunneling equipment, in particular to a shield tunneling equipment and a real-time life prediction system and method thereof. Background technique [0002] Shield equipment (including shield / TBM) is a multi-disciplinary and complex underground engineering equipment integrating electromechanical and hydraulic systems. It plays an important strategic role in the construction of major national infrastructure such as subways, railways, and highways. The service life of its key components is often It determines the actual excavation mileage of the product. Due to the complexity of the geological environment and the customization of equipment, shield equipment often faces high-risk and changeable working conditions, which are difficult to verify through physical experiments. The current design of shield equipment is generally based on empirical formulas or experimental models, which a...

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Problems solved by technology

These documents and patents mainly expounded the relevant methods from the theoretical level, did not consider the variability of the load conditions of the tunnel construction environment, and could not realize real-time prediction and analysis based on the on-site construction conditions. Optimization and lifetime assessment predictive guidance is limited

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