Steel structure fire response analysis method

An analysis method and steel structure technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of inaccurate steel structure fire response analysis results, and achieve the effects of avoiding restrictions, accurate reflection, and accurate research

Active Publication Date: 2016-11-09
STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD +1
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  • Application Information

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Problems solved by technology

However, the scale model established only based on the similar relationship of the fire scene cannot truly reflect t

Method used

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  • Steel structure fire response analysis method
  • Steel structure fire response analysis method
  • Steel structure fire response analysis method

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Experimental program
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Effect test

Embodiment 1

[0047] This embodiment provides a fire response analysis method of a steel structure, the analysis method includes:

[0048] Step 101, determine the fire scene similarity relationship, the fire scene similarity relationship at least includes a geometric similarity ratio.

[0049] Step 102: Determine the structural similarity of the steel structure according to the similarity of the fire scene. The structural similarity at least includes a surface force similarity ratio, a body force similarity ratio, a concentrated load similarity ratio, and a structural temperature similarity ratio.

[0050] Step 103, according to the fire scene similarity relationship, determine the heat transfer similarity relationship of the steel structure. When the steel structure is not equipped with fire protection, the heat transfer similarity relationship includes at least the similarity ratio of the convective heat transfer coefficient and the similarity ratio of the comprehensive radiation coeffici...

Embodiment 2

[0056] The scale model test not only overcomes the problem of the accuracy of the numerical simulation method, but also solves the problems of high cost of the full-scale test, limited experimental conditions and test equipment, and is an effective method for analyzing the fire response of steel structures. The establishment of scale model is an important part of fire response analysis of steel structure by scale model test. In the process of establishing the scale model, it is particularly important to determine the similarity between the scale model and the prototype. Based on this, this embodiment provides a steel structure that can accurately establish a scale model to truly and accurately reflect the fire response of the steel structure. Analytical methods for fire response of structures. Specifically, the analysis method includes the following steps:

[0057] Step 201, determine the similarity relationship of the fire scene.

[0058] The determination of the fire scene...

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Abstract

The invention discloses a steel structure fire response analysis method and belongs to the technical field of engineering structure fire-resistant analysis. The method comprises the steps of a, determining a fire scene similarity relationship, wherein the fire scene similarity relationship at least comprises a geometric similarity ratio; b, determining a structure similarity relationship of a steel structure according to the fire scene similarity relationship, wherein the structure similarity relationship at least comprises a surface force similarity ratio, a volume force similarity ratio, a concentrated load similarity ratio and a structure temperature similarity ratio; c, determining a heat transfer similarity relationship of the steel structure according to the fire scene similarity relationship; d, establishing a reduced scale model according to the fire scene similarity relationship, the structure similarity relationship and the heat transfer similarity relationship; e, performing a fire test on the reduced scale model; and f, performing analysis according to a fire test result of the reduced scale model, the fire scene similarity relationship, the structure similarity relationship and the heat transfer similarity relationship to obtain a fire response condition of a steel structure. According to the analysis method, the fire response condition of the steel structure can be reflected more truly and accurately, the operation is simple, and the limitation of a full-scale test is avoided.

Description

technical field [0001] The invention relates to the technical field of fire resistance analysis of engineering structures, in particular to a fire response analysis method of steel structures. Background technique [0002] With the application of steel structures in buildings more and more widely, it is particularly important to analyze the fire response of steel structures, so as to carry out reasonable fire resistance design of steel structures. [0003] The traditional fire behavior analysis methods of steel structures mainly include: numerical simulation based on fluid mechanics theory and finite element numerical method, full-scale fire test of building structure, fire resistance test method of constrained components considering the influence of the overall structure, etc. However, the correctness of the simulation results obtained by the numerical simulation method needs to be verified. The full-scale fire test of the building structure is expensive, and the laboratory...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 张志谦金靖刘晓珂陈适才张洋
Owner STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD
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