An Optimal Method for Tunnel Lining Design

Abstract

The invention provides an optimization method for tunnel lining design. The optimization method is characterized by including the steps of 1), on the basis of the permeable-lining design principle, calculating the maximum crack width of lining in different design schemes and taking calculation parameters and a calculating result as a source data set for subsequent mathematical analysis; 2), pre-processing the source data set in the step 1), subjecting source data to standardized processing firstly, and then subjecting the data set after standardized processing to data exception monitoring and processing by adopting the Markov distance principle; 3), sequentially establishing regression equations controlling variables and the design parameters by adopting a stepwise regression method in multivariate statistical analysis and selecting the regression equation maximum in significant test value as the final optimization equation of the tunnel lining design; affect of the design parameters on engineering safety is taken into comprehensive consideration in an optimization design model, influence of different optimization design measurements on improving the safety of lining is analyzed quantitatively, the model is concise, design efficiency is improved, and wide applicability is achieved.

Description

technical field [0001] The invention belongs to the field of structural design of hydraulic structures, in particular to an optimization method for tunnel lining design. Background technique [0002] Concrete lining is generally regarded as an impermeable material in the design of hydraulic tunnels. However, in high water-rich engineering environments, this treatment method often makes the designed lining thicker, which is even difficult to be accepted by the project. With the widespread application of a large number of high-voltage or deep-buried tunnels, the above problems have become increasingly prominent. The concept of lining design based on water permeability has been paid more and more attention. Many studies have begun to apply seepage water pressure on the lining according to body force, and study its influence on the seepage field and internal force of the lining. [0003] However, the design theory of permeable lining is usually relatively complicated, and most ...

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Problems solved by technology

[0004] Therefore, the research results of tunnel lining design mainly have the following problems: (1) the comprehensive influence of multiple design parameters on the lining safety is not considered; (2) the practicability of the research results in actual engineering is ignored; (3) the From the perspective of quantitative analysis, an intuitive optimization design equation is abstracted, and the design efficiency is low

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