CN115749017A

CN115749017A - Bridge-cut-off heat insulation structure and heat insulation method for constructional column

Info

Publication number: CN115749017A
Application number: CN202211404429.8A
Authority: CN
Inventors: 丛勐; 刘春�; 张宏; 罗申; 伍雁华; 邵如意
Original assignee: Architectural Design And Research Institute Of Southeast University Co ltd
Current assignee: Architectural Design And Research Institute Of Southeast University Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-07

Abstract

The invention provides a constructional column broken bridge heat insulation structure and a heat insulation method, wherein the structure comprises a pair of constructional column steel reinforcement cages, a heat insulation plate, a first connecting steel plate and a second connecting steel plate; the constructional column reinforcement cages are arranged between two adjacent building blocks, and a pair of constructional column reinforcement cages are oppositely arranged to form a gap for accommodating a heat preservation plate; the first connecting steel plates are arranged in pairs, wherein one first connecting steel plate is welded on one constructional column reinforcement cage, and the other first connecting steel plate is welded on the other constructional column reinforcement cage; a first reserved bolt hole is formed in each first connecting steel plate; the second connecting steel plate is used for connecting the same pair of first connecting steel plates to fix the pair of constructional column steel reinforcement cages into a whole, and the second connecting steel plate is positioned outside the constructional column steel reinforcement cages; and a second bolt hole is reserved in the second connecting steel plate. The invention can cut off the heat bridge effect of the constructional column part and improve the overall thermal performance of the masonry structure without adopting external heat insulation.

Description

Bridge-cut-off heat insulation structure and heat insulation method for constructional column

Technical Field

The invention belongs to the field of masonry structures, and particularly relates to a bridge cut-off heat insulation structure and a heat insulation method for a constructional column.

Background

The building envelope system is an important building component, and the main function of the building envelope system is to separate the climate of the used space inside the building from the outside outdoor environment and maintain the stability of the indoor environment. Enclosures generally reduce heat exchange inside and outside buildings by lightweight materials with low heat transfer coefficients. There are some parts in the building envelope that have a greater heat transfer coefficient than adjacent parts, and are more likely to become bridges for the transfer of heat inside and outside the building, and are therefore called thermal bridges. In the heat bridge area, the temperature of the indoor end is obviously higher than other parts in summer and obviously lower than other parts in winter, so that condensation and frosting are easy to occur, the durability of local building components is reduced in the long term, and the normal use of the interior of a building is influenced. Meanwhile, the heat bridge can become an obvious indoor and outdoor heat transfer window under the condition of good overall thermal performance of the building by analyzing the overall energy consumption of the building, so that the overall heat preservation and insulation capacity of the building is reduced, and the energy consumption of the building is increased. The masonry structure is a simple and reliable building structure system, is widely applied to 1-2-storey houses, is low in construction cost and high in construction speed, and is widely applied to the field of rural construction. The building block that at present extensively adopted is light high strength insulation material, and coefficient of heat conductivity is lower, and the constructional column that nevertheless exists among the masonry structure is reinforced concrete column, and coefficient of heat conductivity is obviously higher than masonry structure, becomes the heat bridge among the masonry structure extremely easily, causes indoor wall to go mildy and drops, reduces the whole comfort level of building indoor environment.

At present, in building engineering, related technologies of bridge cutoff and heat insulation are widely applied to positions such as doors and windows, curtain walls, parapets and the like, the thermal performance of the whole building is obviously improved, for example, in a reinforced concrete structure, heat bridge positions such as columns, beams, raised floor slabs, door and window openings and the like are all subjected to external heat insulation treatment by adopting heat insulation materials, but the external heat insulation treatment method is more suitable for a reinforced concrete frame structure, for single-layer and low-layer masonry structures, the building blocks have strong self-heat insulation performance, and the secondary waste is obviously caused by applying the external heat insulation treatment mode, so that the method for independently carrying out heat bridge cutoff treatment on constructional columns in the masonry structure is a more economic and convenient masonry structure heat bridge treatment mode.

Disclosure of Invention

The invention provides a constructional column broken bridge heat insulation structure and a heat insulation method aiming at the phenomenon that a constructional column in the existing masonry structure building lacks effective heat bridge blocking measures, and realizes the heat bridge blocking of a constructional column reinforcement cage under the condition of not reducing the structural function of the constructional column. In order to realize the purpose, the invention adopts the following technical scheme:

a constructional column bridge cut-off heat insulation and preservation structure comprises:

the pair of constructional column reinforcement cages are arranged between two adjacent building blocks, are arranged oppositely and form a gap for accommodating a heat preservation plate;

the first connecting steel plates are arranged in pairs, one first connecting steel plate is welded on one constructional column steel reinforcement cage, and the other first connecting steel plate is welded on the other constructional column steel reinforcement cage; a first reserved bolt hole is formed in each first connecting steel plate;

the second connecting steel plate is used for connecting the same pair of first connecting steel plates to fix the pair of constructional column steel reinforcement cages into a whole, and the second connecting steel plate is positioned outside the constructional column steel reinforcement cages; reserve the second bolt hole on the second connecting steel plate, the second bolt hole corresponds the setting with first bolt hole and passes in order to supply connecting bolt.

Preferably, the heat insulation plate further comprises a heat insulation plate for isolating the first connection steel plate and the second connection steel plate, and the heat insulation plate is positioned between the second connection steel plate and the pair of first connection steel plates.

Preferably, the heat insulation plate and the constructional column reinforcement cage are arranged with equal length.

Preferably, the heat insulation plate is a resin plate.

Preferably, the first connector steel plate is located on a side of the corresponding construction column reinforcement cage facing the block.

Preferably, the heat insulation plates and the corresponding second connecting steel plates are arranged in equal length.

A constructional column broken bridge heat insulation and preservation method is based on the constructional column broken bridge heat insulation and preservation structure and comprises the following steps:

step A: placing the insulation board between a pair of constructional column reinforcement cages;

and B: the connecting bolts connect the units consisting of the first connecting steel plates, the heat insulation plates and the paired second connecting steel plates into a whole;

and C: and (4) wrapping the steel wire mesh template on the outer sides of the two building blocks, and then pouring concrete in the steel wire mesh template.

Preferably, before installing the insulation board, the insulation board further comprises: dividing the constructional column into two independent parts of constructional column reinforcing steel bars, and assembling the two parts of constructional column reinforcing steel bars into the constructional column reinforcing cage in a factory in advance; and then welding a first connecting steel plate on the constructional column reinforcement cage.

Compared with the prior art, the invention has the advantages that:

(1) Divide into independent two parts with the constructional column to assemble the constructional column steel reinforcement cage with these two parts of constructional column reinforcing bars at the mill in advance, then install the heated board between two steel reinforcement cages, the heated board separates two constructional column steel reinforcement cages and the constructional column heat bridge after subsequent concrete placement accomplishes. Therefore, the invention can cut off the thermal bridge effect of the constructional column part and improve the overall thermal performance of the masonry structure under the condition of not adopting external heat insulation.

(2) The heat insulation plate can prevent the first connecting steel plate and the second connecting steel plate from being directly connected to generate a heat bridge, and further improves the overall heat bridge isolation effect.

Drawings

FIG. 1 is a perspective view of a construction column bridge cut-off insulation construction according to an embodiment of the present invention;

FIG. 2 is a perspective view of the constructional column broken bridge heat insulation and preservation structure after pouring according to an embodiment of the invention;

FIG. 3 is a partial schematic view of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 3;

fig. 5 is a sectional plan view of fig. 2.

The steel wire mesh heat insulation plate comprises 1-connecting units, 11-second connecting steel plates, 12-heat insulation plates, 13-connecting bolts, 14-first connecting steel plates, 2-heat insulation plates, 3-constructional columns, 4-building blocks and 5-steel wire mesh templates.

Detailed Description

The present invention will be described in more detail hereinafter with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, and it is to be understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the invention.

As shown in fig. 1 to 5, a constructional column bridge cut-off heat insulation and preservation structure is suitable for a reinforced concrete constructional column heat bridge cut-off in a masonry structure, and comprises two mutually independent constructional column reinforcement cages and a plate-shaped heat preservation material (heat preservation plate 2) which is long enough to the constructional column to perform heat bridge cut-off on the constructional column in the masonry structure; and the steel plate is connected with a high-strength steel plate (a first connecting steel plate 14) welded on the constructional column steel reinforcement cage in advance through a high-strength heat-insulating resin plate (a heat insulating plate 12) and a second connecting steel plate 11 through a connecting bolt 13, so that rigid connection is generated between two independent constructional column steel reinforcement cages to jointly complete the stress function of the constructional column and separate an originally existing heat bridge.

This constructional column bridge cut-off heat preservation structure includes: steel reinforcement cage unit, heated board 2 and linkage unit.

Wherein the constructional column 3 comprises a pair of constructional column reinforcement cages; the connecting units 1 are longitudinally distributed along the steel reinforcement cage unit and used for connecting a pair of constructional column steel reinforcement cages into a whole, and each connecting unit comprises a second connecting steel plate 11, a heat insulation plate 12, a connecting bolt 13 and a first connecting steel plate 14.

Although the first connecting steel plate 14 and the second connecting steel plate 11 in the newly added connecting unit are limited by materials, the thermal bridge still exists, the whole area of the thermal bridge is greatly reduced, the constructional column thermal bridge of the masonry structure is reduced, and the whole heat insulation performance of the masonry structure is comprehensively improved.

The concrete structure of the broken bridge heat insulation and preservation structure of the constructional column is as follows:

a pair of constructional column steel reinforcement cage sets up between two adjacent building blocks 4, and a pair of constructional column steel reinforcement cage sets up relatively and forms the clearance that holds heated board 2. At the position needing to be connected, a first connecting steel plate 14 is welded in advance to the constructional column steel reinforcement cage, and a bolt connecting hole position is reserved.

The heat insulation plate 2 is made of hard heat insulation materials, is arranged with the same length as the constructional column reinforcement cage, and separates the reinforcement cage and a constructional column heat bridge after the subsequent concrete pouring is finished.

The first connecting steel plates 14 are high-strength steel plates and are arranged in pairs, wherein one first connecting steel plate 14 is welded on one constructional column reinforcement cage, and the other first connecting steel plate 14 is welded on the other constructional column reinforcement cage; the first connecting steel plate 14 is provided with a first reserved bolt hole. The first connector steel plate 14 is located on the side of the corresponding construction column reinforcement cage facing the block 4.

The second connecting steel plate 11 is a main stressed member, and is used for connecting the same pair of first connecting steel plates 14 to fix a pair of constructional column steel reinforcement cages into a whole, so that a rigid connection is generated between the pair of constructional column steel reinforcement cages and the masonry structure function is jointly exerted. Wherein, the second connecting steel plate 11 is positioned outside the constructional column reinforcement cage; and a second bolt hole is reserved in the second connecting steel plate 11 and is correspondingly arranged with the first bolt hole so as to allow the connecting bolt 13 to pass through.

And a heat shield plate 12 for blocking the first and second

connection steel plates

14 and 11, the heat shield plate 12 being positioned between the second connection steel plate 11 and the pair of first connection steel plates 14. The heat insulation plate 12 is a resin plate and is arranged with equal length with the corresponding second connection steel plate 11.

A constructional column broken bridge heat insulation and preservation method is based on a constructional column broken bridge heat insulation and preservation structure and comprises the following steps:

(1) The construction column is divided into two separate sections of construction column reinforcement and the two sections of construction column reinforcement are assembled in advance at the factory into a construction column reinforcement cage.

(2) The insulation board 2 is placed between a pair of constructional column reinforcement cages.

(3) The connection bolts 13 integrally connect the unit composed of the first connection steel plate 14, the insulation plate 12 and the pair of second connection steel plates 11.

(4) And (3) wrapping the steel wire mesh template 5 on the outer sides of the two building blocks 4, then pouring concrete in the steel wire mesh template 5, and carrying out guniting work.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a constructional column bridge cut-off heat preservation structure that insulates against heat which characterized in that includes:

the second connecting steel plate is used for connecting the same pair of first connecting steel plates to fix the pair of constructional column steel reinforcement cages into a whole, and the second connecting steel plate is positioned outside the constructional column steel reinforcement cages; and a second bolt hole is reserved in the second connecting steel plate and corresponds to the first bolt hole so as to allow the connecting bolt to pass through.

2. The construction post-bridge-cut-off insulation structure according to claim 1, further comprising an insulation board for cutting off the first and second connection steel plates, the insulation board being located between the second connection steel plate and a pair of the first connection steel plates.

3. The construction column bridge cut-off, thermal insulation and heat preservation structure according to claim 1, wherein the thermal insulation boards are arranged with equal length to the construction column reinforcement cage.

4. The construction post break bridge insulation construction according to claim 1, wherein said insulation board is a resin board.

5. The construction column bridge cut-off, heat insulation and preservation structure according to claim 1, wherein the first connecting steel plate is located on a side of the corresponding construction column reinforcement cage facing the block.

6. The construction column bridge cut-off heat insulation and preservation structure according to claim 1, wherein the heat insulation plates and the corresponding second connecting steel plates are arranged with equal length.

7. A constructional column bridge cut-off heat insulation method is based on the constructional column bridge cut-off heat insulation structure of any one of claims 2 to 6, and is characterized by comprising the following steps:

8. The method for constructing the column, the bridge cut-off, the heat insulation and the preservation according to claim 7, further comprising, before installing the heat insulation board: dividing the constructional column into two independent parts of constructional column reinforcing steel bars, and assembling the two parts of constructional column reinforcing steel bars into the constructional column reinforcing cage in a factory in advance; and then welding a first connecting steel plate on the constructional column reinforcement cage.