Finite element analysis method for composite self-thermal insulation wall

Abstract

The invention discloses a finite element analysis method for a composite self-thermal insulation wall. The wall is constructed by using composite self-thermal insulation building blocks, concrete and steel bars together. The method includes the steps of firstly, conducting a continuity assumption, an isotropy assumption and a uniformity assumption on the wall, and meanwhile neglecting the slippage between the steel bars in the wall and concrete; secondly, adopting an integral model to conduct modeling on the wall, and after the definition of masonry wall constitutive, concrete constitutive and steel bar constitutive, selecting a concrete damage plasticity model to conduct nonlinear finite element analysis on the wall. Compared with existing experimental calculation methods, the method can use calculation alone to obtain relevant performance data of the wall, and results can be simulated for calculation and improved before experiments, so that invalid experiments are avoided, and the experiment quality is improved.

Description

Technical field [0001] The invention relates to a finite element analysis method of a composite self-insulating wall, which belongs to building construction technology. Background technique [0002] With the implementation of the above-mentioned energy-saving and emission-reduction policies and sustainable development strategies in my country, it is necessary to study new wall materials that are energy-saving, excellent performance, and easy to industrialize production. Traditional single wall materials gradually cannot meet the requirements of building energy-saving standards, so composite wall materials emerged. The composite wall can be divided into three forms: external insulation, internal insulation and self insulation. The problems of internal insulation of external walls include easy condensation on the internal surface, thermal bridge effect, large room temperature fluctuations, etc.; external insulation of external walls has problems such as easy fall-off of the insula...

AI Technical Summary

Problems solved by technology

Problems existing in the internal insulation of the external wall include easy condensation on the internal surface, cold and thermal bridge effect, large fluctuations in room temperature, etc.; external thermal insulation of the external wall has problems such as the insulation layer is easy to fall off, the construction quality is difficult to control, and the project cost is high.

However, there are still relatively few forms of composite self-insulating blocks, and we need to keep designing and exploring to find a more excellent composite self-insulating block structure; at the same time, the current experiments and theories on composite self-insulating blocks There are relatively few studies, there are no relevant engineering parameters and indicators, and the normative standards are even blank, which seriously hinders the development and application of this new composite self-insulating block.

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