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Reliability-based fireproof design method for reinforced concrete composite member

A technology of reinforced concrete and composite components, applied in design optimization/simulation, instrument, geometric CAD, etc., can solve the problems of affecting the bearing capacity of the structure, not considering the uncertainty of material properties, etc., to achieve the effect of improving the reliability of fire protection

Pending Publication Date: 2020-10-30
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0002] The current fire protection design method of reinforced concrete members does not take into account the uncertainty of material properties in fire, which is an important factor affecting the structural bearing capacity

Method used

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  • Reliability-based fireproof design method for reinforced concrete composite member
  • Reliability-based fireproof design method for reinforced concrete composite member
  • Reliability-based fireproof design method for reinforced concrete composite member

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.

[0021] A reliability-based fire protection design method for reinforced concrete composite members, including the following processes:

[0022] 1) To clarify the calculation process of the material sub-item coefficient at room temperature, see figure 1 .

[0023] 2) Since the functional function at high temperature is the same as that at normal temperature, it is now necessary to determine the statistical parameters (mean and variance) of the material at high temperature. Here, the method recommended in "Demonstrating adequate safety for a concrete column exposed to fire, using probabilistic methods" is used. The statistical parameters of steel and concrete at different temperatures can be obtained, as shown in Table 1 to Table 3.

[0024] Table 1

[0025]

[0026] Table 2

[0027]

[0028] table 3

[0029]

[0030] 3) Perfo...

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Abstract

The invention provides a reliability-based fireproof design method for a reinforced concrete composite member. The method comprises the following steps: S1, defining a calculation process of a material subentry coefficient at normal temperature; S2, determining statistical parameters of the material at high temperature; S3, analyzing the reliability of the component at a high temperature. The invention has the beneficial effects that the material subitem coefficient at the high temperature is given, engineering practice can be guided, and the fireproof reliability of a building structure is improved.

Description

technical field [0001] The invention relates to a fire protection design method, in particular to a reliability-based fire protection design method for reinforced concrete composite members. Background technique [0002] Current fire protection design methods for reinforced concrete members do not take into account the uncertainty of material properties in fire, which is an important factor affecting the structural bearing capacity. Therefore, how to combine reliability with structural fire protection design and propose a reliability-based fire protection design method for reinforced concrete members in order to guide engineering practice is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0003] In order to solve the problems in the prior art, the invention provides a reliability-based fire protection design method for reinforced concrete composite members. [0004] The invention provides a method for fire protection desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/13G06F119/02
CPCG06F30/20G06F30/13G06F2119/02
Inventor 查晓雄邵志伟
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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