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method for optimizing tunnel construction based on improved Topsis method

A technology for tunnel construction and planning, applied in the direction of instruments, data processing applications, forecasting, etc., can solve problems such as lack, strong subjectivity, and inability to fully consider the relationship

Inactive Publication Date: 2019-02-15
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology

But on the whole, there are still two problems: 1) There is a lack of a set of evaluation index system that comprehensively considers the influence of tunnel superstructure; Strong subjectivity, and can not fully consider the relationship between the indicators, and did not deal with the weight setting and optimization method of the impact indicators of the superstructure according to the tunnel construction plan

Method used

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  • method for optimizing tunnel construction based on improved Topsis method
  • method for optimizing tunnel construction based on improved Topsis method
  • method for optimizing tunnel construction based on improved Topsis method

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Embodiment 1

[0154] 1. Data source

[0155] In this embodiment, Qinhuangdao Laolongtou Highway Tunnel is taken as the research background, and the deformation dimensions of each evaluation index corresponding to each construction method are obtained through large-scale finite element software ANSYS calculation and related monitoring data, as shown in Table 2.

[0156] Table 2 Construction methods and corresponding requirements

[0157]

[0158] 2. Determine the weight

[0159] (1) AHP method. The AHP method is used to determine the subjective weight of each evaluation index. It establishes a hierarchical structure based on 7 evaluation indicators of tunnel deformation, constructs a judgment matrix of evaluation indicators, and conducts a consistency check at the same time, and then obtains the subjective weight W of each evaluation indicator. 1 (j), where j=1, 2...7.

[0160] ① Establish a judgment matrix A based on the elements of each layer (k) .

[0161] The value of the judgme...

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Abstract

The invention discloses a method for optimizing tunnel construction based on improved Topsis method which includes the following steps: step selection method, three-pilot method, middle pilot method,CRD method of main tunnel and annular excavation reserved core soil method of main tunnel are used in this paper. According to the five selected tunnel construction schemes, the following eight indexes are selected to establish the evaluation index system: surrounding rock engineering geological conditions, vault settlement, surface settlement, inverted arch uplift, Great Wall settlement, engineering progress, engineering cost and local inclination ratio of Great Wall. AHP method is used to determine the subjective weight Omega _ 1, information entropy method is used to determine the objective weight Omega _ 2, and game theory aggregation model is introduced to determine the comprehensive weight. The improved Topsis method is used to eliminate the calculation errors caused by different units. Grey relational grade is adopted to improve the sticking progress. On the basis of ensuring the safety of the Great Wall in the construction process, the invention selects a more reasonable construction method to maximize the engineering income.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to an optimal method for tunnel construction based on the improved Topsis method. Background technique [0002] With the development of the domestic economy, the road network continues to expand, and there are more and more road tunnels. Tunnel construction will inevitably have adverse effects on the surrounding environment, and will cause varying degrees of disturbance to the above-ground and underground structures and buildings, especially the construction of tunnels passing through the ancient Great Wall. damaged by disturbance. During tunnel construction, surrounding rock loosening and ground subsidence may cause damage to the ancient Great Wall. Therefore, it is very important to choose a construction plan that minimizes disturbance to the Great Wall and maximizes benefits. Commonly used construction methods in tunnel construction include step method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/08
CPCG06Q10/04G06Q10/06393G06Q50/08
Inventor 王景春黄文化陈思博刘超马永利薛佳龙叶竹王昕巍赵子甲郭献雪罗富亮
Owner SHIJIAZHUANG TIEDAO UNIV
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