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Method of optimizing gantry bent structure on basis of non-probabilistic reliability theory

A non-probabilistic and reliable technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of immaturity, reliability requirements of portal racks and inability to choose between quality, and achieve improvement Efficiency and ease of engineering application

Inactive Publication Date: 2015-03-25
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for optimizing the structure of portal bents based on non-probabilistic reliability theory, so as to solve the problem that portal bents cannot choose between the reliability requirements and quality of the structural system in the prior art, and there is no mature method in the world. The problem that the method can be used for reference

Method used

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Embodiment Construction

[0008] The preferred embodiment provides a method for optimizing the portal bent structure based on non-probabilistic reliability theory. The specific implementation process is as follows, including the following steps:

[0009] Determine the moment resistance design value of column and beam according to the non-probabilistic reliability index;

[0010] determine allowable bending moments for columns and beams; and

[0011] The failure probability obtained based on the interval convex set model is compared with the failure probability obtained based on the ellipsoid convex set model to optimize the portal bent structure.

[0012] From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects:

[0013] The invention provides a method for optimizing the portal bent structure based on non-probabilistic reliability theory, which reduces the number of constrained design portal bents compared wi...

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Abstract

The invention discloses a method of optimizing a gantry bent structure on the basis of non-probabilistic reliability theory. The method includes the steps of determining bending resistance values of a column and a beam; determining allowable moments of the column and the beam; comparing failure probability, acquired on the basis of an interval convex set model, to failure probability, acquired on the basis of an ellipsoidal convex set model so as to optimize the gantry bent structure. Compared with the traditional methods, the method has the advantages that fewer constraint design gantry bents are used, the efficiency of optimal design of the gantry bents is improved, and application of the bents to engineering is facilitated.

Description

technical field [0001] The invention relates to a method for a portal bent structure, in particular to a method for optimizing a portal bent structure based on non-probability reliability theory. Background technique [0002] The occurrence of earthquakes is an accidental event, and the occurrence of major earthquakes is a disaster event. Since there are not many earthquake data recorded at present, and the factors such as earthquake occurrence and propagation have not been fully studied, especially the impact of rare earthquakes on the performance of engineering structures The understanding is still insufficient, and the uncertainty of the impact of earthquake action on engineering structures is extremely great. [0003] There is no trade-off between the reliability requirements and the quality of the structural system for the portal bent frame, and there is no mature method for reference in the world. Contents of the invention [0004] The purpose of the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 夏雨徐迪
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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