Exterior wall external insulation composite wall body with support

Abstract

The invention discloses an exterior wall external insulation composite wall body with a support, relates to a building insulation composite wall body and aims to solve the problem of a large number of thermal bridges in the conventional insulation wall. A first structure of the composite wall body is that: a concrete cantilever beam supporting member is fixed in a main body structure of a building; an insulating layer is positioned outside a substrate wall body; a vertical reinforced steel bar is arranged outside the insulating layer and welded with an embedded steel plate of the concrete cantilever beam supporting member; a metal mesh is fixed with the vertical reinforced steel bar; a door and a window are arranged on insulating layers on openings; protective layers are formed outside the insulating layer and on the insulating layers on both sides of the door and the window; and the vertical reinforced steel bar and the metal mesh are positioned in the protective layers. A second structure of the composite wall body is that: the concrete cantilever beam supporting member is fixed in the main body structure of the building; profile steel is welded at the outer end of the concrete cantilever beam supporting member; a decorating large plate protective layer is fixed with the profile steel; and an insulating layer is formed between an external decorating large plate protective layer and a substrate wall body. The composite wall body has the advantages of capacity of reducing the thermal bridges in a large scale, best insulating effect, safe external protective layer and decorating surface layer, high fire resistance, high durability, simple structure and convenient construction.

Description

technical field [0001] The invention relates to an external thermal insulation composite wall body of a building. Background technique [0002] The purpose of thermal insulation of energy-saving building envelopes is to limit the heat transfer between indoors and outdoors by taking thermal insulation measures for the envelopes, and reduce the energy consumption required for heating or cooling to ensure a comfortable indoor thermal environment. The exterior walls of buildings in heating areas are like our cotton coats, and the exterior walls of buildings in hot summer areas are like the shell of refrigerators. At present, energy-saving and thermal insulation walls are used to improve the thermal insulation effect of traditional walls and limit the heat transfer between indoors and outdoors by adding thermal insulation layers. However, the thermal bridge that has been difficult to eliminate for a long time has become a bottleneck that hinders energy-saving walls. [0003] 1. ...

AI Technical Summary

Problems solved by technology

[0011] 2. The limit value of the average heat transfer coefficient of the wall in the severe cold (A) area needs to be lowered by 0.05w / m than that in the (B) area 2 .k, the transfer coefficient that the main wall should achieve is more difficult to achieve

[0016] 2), the durability is not good, and the amount of maintenance is large

[0025] 2. The limit value of the average heat transfer coefficient of the wall in the severe cold (A) area needs to be lowered by 0.05w / m than that in the (B) area 2 , it is more difficult to achieve

[0026] However, the thermal bridge at the opening of the sandwich insulation wall should be much larger than the thermal bridge at the opening of the EPS board thin plaster insulation wall. Even the heat transfer coefficient that the main wall should reach in the appendix 2 cannot be satisfied. Considering the sandwich The value of the thermal bridge increase in the opening of the insulation wall is also meaningless

According to the "Code for Design of Masonry Structures" GB50003, the thickness of the middle insulation layer of sandwich insulation should not be greater than 100mm, so it is impossible to meet the requirements of Schedule 2

[0027] There are other problems with the sandwich insulation wall: the gap between the installed EPS board and the masonry around the opening, the concrete cornice board and the EPS board is very large, which is difficult to control during construction, which increases the convection of the air inside and outside the EPS board. Heat transfer; the exterior decoration of the sandwich insulation wall is usually facing bricks, which block the indoor water vapor from radiating to the outside during the heating period. The 15% regulation, the reduction of thermal insulation effect, and the increased heat transfer of tensioned steel bars are not included in the above analysis. How many sandwich insulation buildings have been constructed can meet the 50% energy saving standard? It can not meet the 65% standard of energy saving in severe cold areas

[0031] The thermal bridge of the insulation block wall at the cornice board and the opening is close to the thermal bridge of the sandwich insulation wall, but there are still the following problems: ①The insulation layer is divided into fragments by sand, slag, ceramsite, cement, etc. The wall, from the analysis of the purpose of blocking heat transfer, its structure is unreasonable. How thick is the insulation block wall of the main wall in the severe cold area to meet the requirements of the average heat transfer coefficient of the wall in the attached table 2? If the insulation effect of EPS boards and XPS boards is compared to down or cotton, then some materials with high thermal conductivity can be compared to old cotton or catkins, and insulation blocks can be compared to down or cotton mixed with slag, sand, and cement. wall or material

[0038] 1) Most of the prefabricated wall panels have seam thermal bridges, which have a great influence on the average heat transfer coefficient of the wall. Some projects use prefabricated light steel skeleton insulation wall panels, and the joints are cracked and hardened after installation. exposed, causing the indoor floor to warp, becoming a quality problem that cannot be solved by general maintenance (if it is completely solved, unless the outer wall is glued with another layer of insulation)

[0039] 2) Most of the connections between prefabricated wall panels and frame beams and columns are external installations welded with anchor bolts or embedded steel plates. The force is not clear and the stress is concentrated

[0049] The cause of the problem: The thin plastered thermal insulation wall only relies on bonding to connect the thermal insulation layer to the wall. The outer side of the polymer thermal insulation layer uses 3-4mm cement polymer mortar sandwiched with glass fiber mesh as a protective layer. Natural fire prevention is not good. The exterior finish is not safe and the durability is not good

The method of installing insulation materials for sandwich insulation, insulation blocks, and inner insulation walls is too primitive and simple, with many natural thermal bridges, and some insulation materials such as steel wire grid benzene board have high thermal conductivity and poor insulation

[0050] The problems existing in energy-saving walls have not been solved for a long time. There are two reasons: one is that no reliable structural measures have been taken to ensure the safety of the outer protective layer and minimize thermal bridges; the other is that ordinary cement mortar plastering has not been solved. Reliable bonding with the polymer insulation layer, so as to avoid the common quality problem of hollowing and cracking of the plastering layer; the third is that the thermal bridge problem at the hole has not been effectively solved, including my aforementioned two patents. Thermal bridge problem at the entrance, and the construction of the entrance is troublesome

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