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Evaluation method for arch rib hoisting construction stability based on fuzzy comprehensive evaluation

A fuzzy comprehensive evaluation and evaluation method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems that the quantitative evaluation of arch rib construction stability has not yet been carried out, so as to improve effectiveness and ensure construction safety Effect

Inactive Publication Date: 2017-05-31
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

[0003] In summary, although the risk assessment method has been widely used in the overall bridge construction and bridge durability, the quantitative evaluation of the construction stability of the arch rib lifting during the construction of the arch bridge has not yet been carried out.

Method used

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  • Evaluation method for arch rib hoisting construction stability based on fuzzy comprehensive evaluation
  • Evaluation method for arch rib hoisting construction stability based on fuzzy comprehensive evaluation
  • Evaluation method for arch rib hoisting construction stability based on fuzzy comprehensive evaluation

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Embodiment Construction

[0027] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The arch rib span of Luoyang East Ring Steel Box Arch is about 157m, of which about 88m in the middle is used as the lifting section, and the lifting support adopts lattice column support. Rib lifting process for safety assessment.

[0029] Such as figure 1 As shown, a method for evaluating the construction stability of arch rib lifting based on fuzzy comprehensive evaluation includes the following steps:

[0030] Step 1: Determine the factors that affect the construction stability of arch rib lifting;

[0031] Taking the construction process of the Luoyang East Ring Arch Bridge as the background, and comprehensively considering the actual situation of arch rib lifting, the construction stability evaluation factors of arch rib lifting are divided into three levels. As shown in Table 1, the first level of factors includes hoisting overall fac...

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Abstract

The invention relates to an evaluation method for arch rib hoisting construction stability based on fuzzy comprehensive evaluation, belonging to the technical field of bridge construction. The method comprises the following steps: S1, determining factors affecting the arch rib hoisting construction stability; S2, dividing the evaluation grades of the arch rib hoisting construction stability according to factor theoretical values and defining critical judgment values of the evaluation grades under the factors; S3, acquiring the actual monitoring values of the factors in a construction process, determining a membership function, and calculating the membership degrees of the stability evaluation grades of the factors; S4, determining the factor weights by means of a subjective and objective combined method; and S5, performing fuzzy comprehensive evaluation on the arch rib hoisting construction stability according to the factor weights and the membership degrees. According to the method provided by the invention, the safety problem in the arch rib construction process is quantitatively evaluated, so that the construction safety and the construction monitoring effectiveness are guaranteed; by treating a fuzzy evaluation object through a precise digital means, quantitative evaluation on fuzzy data is performed.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a method for evaluating the construction stability of arch rib lifting based on fuzzy comprehensive evaluation. Background technique [0002] In recent years, the construction and development of steel arch bridges in my country has been very rapid. With the continuous increase of bridge spans, stability problems have become more and more prominent. Therefore, more and more bridge constructions carry out safety assessment work. Academician Qian Qihu affirmed the role and importance of engineering risk assessment, and put forward valuable suggestions on the problems existing in my country's current safety risk assessment. The current risk assessment methods mainly include: expert survey method and analytic hierarchy process, WBS method and fault tree method, land subsidence assessment theory and method, fuzzy membership curve method, Bayesian network risk a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 郑大为李凯梁丹闫妮韩红静吴红胜
Owner LIAONING TECHNICAL UNIVERSITY
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