Fireproof performance evaluation method of concrete member of water-injection hollow steel pipe and application

Abstract

The invention relates to a fireproof performance evaluation method of a concrete member of a water-injection hollow steel pipe, comprising the following steps that: finite element models of the concrete member of the water-injection hollow steel pipe are established: the concrete member of the water-injection hollow steel pipe respectively establishes finite element models of a temperature field and a mechanical field, the temperature field establishes the finite element model of the temperature field according to the heat transfer theory and the finite element theory, and the mechanical field establishes the finite element model of the mechanical field according to the heat transfer theory and the finite element theory; the software is adopted to calculate the finite element models: firstly software is adopted to calculate the finite element model of the temperature field, then the temperature field with the obtained finite element is taken into the finite element model of the mechanical field for calculation so as to obtain the mechanical field; the fire resistance period is obtained according to the calculation result; and fireproof measures are designed according to the fire resistance period. The invention adopts the finite element models to carry out modeling on the specific concrete member of the water-injection hollow steel pipe, carries out full consideration on all the materials and can carry out fireproof evaluation of buildings more accurately.

Description

technical field [0001] The invention relates to a method for evaluating the fireproof performance of a building component and its application, in particular to a method for evaluating the fireproof performance of a water-filled hollow steel tube concrete component and its application. Background technique [0002] With the development of construction industry, concrete filled steel tubes are more and more widely used in buildings. In practical applications, the concrete-filled steel pipe members are usually made into hollow concrete-filled steel pipe members, which not only saves materials but also reduces the transportation weight in use. In order to make full use of the hollow of the hollow concrete-filled steel pipe member in the building, in practical applications, the hollow of the steel pipe concrete member is also used as a building drain pipe or the drain pipe is passed through the hollow of the steel pipe concrete member, which is convenient for the drainage pipe. ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the high cost brought by the full-scale experimental method in the prior art, and at the same time, the technical problem of inaccurate evaluation due

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