CN110952732A - Heat preservation and insulation structure for passive house steel structure cornice and construction method thereof - Google Patents

Heat preservation and insulation structure for passive house steel structure cornice and construction method thereof Download PDF

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Publication number
CN110952732A
CN110952732A CN201911167967.8A CN201911167967A CN110952732A CN 110952732 A CN110952732 A CN 110952732A CN 201911167967 A CN201911167967 A CN 201911167967A CN 110952732 A CN110952732 A CN 110952732A
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China
Prior art keywords
fixing
cornice
rock wool
ribs
board
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Pending
Application number
CN201911167967.8A
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Chinese (zh)
Inventor
钟远享
王国强
许晓煌
郝赫
刘硕
羊伟
赵世华
汪明
董福国
王忠云
金大鹏
陈海龙
张本松
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Beijing International Construction Group Co ltd
Beijing Construction Engineering Group Co Ltd
Original Assignee
Beijing International Construction Group Co ltd
Beijing Construction Engineering Group Co Ltd
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Application filed by Beijing International Construction Group Co ltd, Beijing Construction Engineering Group Co Ltd filed Critical Beijing International Construction Group Co ltd
Priority to CN201911167967.8A priority Critical patent/CN110952732A/en
Publication of CN110952732A publication Critical patent/CN110952732A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/15Trimming strips; Edge strips; Fascias; Expansion joints for roofs
    • E04D13/158Trimming strips; Edge strips; Fascias; Expansion joints for roofs covering the overhang at the eave side, e.g. soffits, or the verge of saddle roofs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1618Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters with means for fixing the insulating material between the roof covering and the upper surface of the roof purlins or rafters

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Abstract

The invention discloses a heat preservation and insulation structure of a steel structure cornice of a passive house and a construction method thereof, relating to the technical field of passive houses, wherein the technical scheme comprises a steel beam extending out of a wall body, and a plurality of fixing ribs vertically welded on the side surface and the bottom surface of the steel beam, wherein the free ends of the fixing ribs are provided with external threads, the side surface and the bottom surface of the steel beam are pasted with heat preservation plates, the length of the fixing ribs is less than the thickness of the heat preservation plate, the fixing ribs penetrate into the heat preservation plate, the outer surface of the heat preservation plate is provided with concave cavities corresponding to the fixing ribs, and the heat preservation plate is fixed; the surface of the insulation board is provided with a gridding cloth layer and a plastering mortar layer. The invention has the advantages that the heat insulation structure can be fixed on the steel beam of the cornice of the passive house, the generation of a heat bridge is prevented, and the connection is firm and reliable.

Description

Heat preservation and insulation structure for passive house steel structure cornice and construction method thereof
Technical Field
The invention relates to the technical field of passive house steel structure heat preservation, in particular to a heat preservation and insulation structure for a passive house steel structure cornice and a construction method thereof.
Background
At present, with the increasing importance of people on energy conservation and environmental protection, various technologies with low energy consumption are developed vigorously in the field of buildings, and one energy-saving building is a passive house. The passive house is an integrator of various technical products, and the total amount of all consumed primary energy sources does not exceed 120 kilowatt-hour/(square meter-year) by fully utilizing renewable energy sources. The low energy consumption standard is realized by building external walls with high heat and sound insulation and strong sealing performance and renewable energy sources, wherein the comprehensive heat preservation and heat insulation of the building are the most important factors.
However, the passive house is still in the starting stage in China, the design atlas has many imperfections, and particularly, the design of local nodes is not standardized. As shown in figure 1, a certain passive building engineering in Beijing is mainly a steel structure framework, an ALC plate is adopted as a wall body, a rock wool plate is adopted as a heat insulation layer for an outer wall of a building, a cornice 91 is arranged on the highest layer of the building, a floor slab 92 is poured on an outwards-extending H-shaped steel beam, and a parapet wall 93 is arranged at the edge of the floor slab. The H-shaped steel beam 1 with the overhanging cornice needs to be subjected to heat preservation treatment, so that a heat bridge is avoided. However, no standard design drawing set exists for the nodes for arranging the insulation boards on the steel beam structure, and particularly, the cantilever beam structure located outdoors is provided. Because outdoor cornice 91 can receive wind load, the requirement that the heated board installation is firm can't be satisfied in conventional design, so need design a new node structure and solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the heat preservation and insulation structure for the cornice of the steel structure of the passive house.
The above object of the present invention is achieved by the following technical solutions: the heat insulation plate comprises a steel beam extending out of a wall body, and a plurality of fixing ribs vertically welded on the side surface and the bottom surface of the steel beam, wherein external threads are arranged at the free ends of the fixing ribs, heat insulation plates are pasted on the side surface and the bottom surface of the steel beam, the length of the fixing ribs is smaller than the thickness of the heat insulation plate, the fixing ribs penetrate into the heat insulation plate, concave cavities are formed in the positions, corresponding to the fixing ribs, of the outer surface of the heat insulation plate, and the ends of the fixing; the surface of the insulation board is provided with a gridding cloth layer and a plastering mortar layer.
According to the technical scheme, the fixing ribs penetrate into the heat insulation plate, and the heat insulation plate is fixed after the heat insulation plate is tightly pressed by the nuts, so that the influence of wind load can be effectively resisted, and the heat insulation plate is firmly fixed on the steel beam; and the ends of the nut and the fixing rib are hidden in the heat insulation plate, so that the fixing rib is prevented from forming a heat bridge.
The invention is further configured to: the sealing cover body is matched with the concave cavity and seals the concave cavity, and the sealing cover body is processed by graphite polystyrene board or rock wool.
Through above-mentioned technical scheme, fill the cavity for the heated board surface is level and smooth, has made things convenient for the construction of net cloth and plastering mortar, and the closing cap body keeps apart fixed muscle end moreover, has further prevented the production of heat bridge.
The invention is further configured to: an anchoring washer is arranged between the nut and the heat insulation plate.
Through above-mentioned technical scheme, solid gasket acts as the effect of gasket, has increased the area of contact with the heated board, has increased the stress surface for the heated board installation is more firm.
The invention is further configured to: the fixed muscle overcoat is equipped with closely fixed sleeve pipe, closely fixed sleeve pipe and anchor packing ring integrated into one piece.
Through above-mentioned technical scheme, inseparable adapter sleeve will fix the gap between muscle and the heated board and fill, avoid the heat from the inside transmission in gap, inseparable adapter sleeve is fixed with the heated board extrusion in addition, has realized the temporary fixation of anchor packing ring, has made things convenient for the installation of follow-up nut, has further strengthened being connected of heated board and girder steel simultaneously.
The invention is further configured to: the free end of the fixing rib is a pointed end.
By the technical scheme, the installation of the heat insulation plate, the tightly fixed sleeve and the nut is facilitated, and the construction efficiency is improved; and make things convenient for the workman to install and find the position of fixed muscle fast through pressing after accomplishing the rock wool board.
The invention is further configured to: the heat preservation board is a rock wool board.
Through above-mentioned technical scheme, the rock wool board has fine thermal insulation performance, and convenient fixed muscle penetrate moreover, has improved the efficiency of construction, and current rock wool strip product size in the rock wool board is less moreover, is used in the outer heat preservation to the girder steel, simple to operate. The rock wool strips are installed firstly, the positions of the fixing ribs are found by pressing, then the cavities are formed, the operation that the cavities need to be aligned with hole positions after being formed in advance is avoided, the installation efficiency is higher, and the installation positions of the cavities are more accurate.
The invention is further configured to: the fixed muscle on every face of girder steel is provided with two rows, and the mutual finished product font of many fixed muscle is arranged.
Through the technical scheme, the fixing ribs are staggered up and down, so that the installation of the heat-insulating plate, particularly the rock wool strip, is facilitated, and the arrangement of the concave cavity on the rock wool strip and the installation of the tight fixing sleeve and the nut are also facilitated.
The second purpose of the invention is to provide a construction method of a heat preservation and insulation structure of a cornice of a passive house steel structure, which comprises the following construction steps:
firstly, vertically welding fixed ribs on the outer surface of a steel beam, wherein the fixed ribs are arranged at intervals;
secondly, installing rock wool boards, wherein fixing ribs welded in advance directly penetrate through the rock wool boards;
step three, forming a concave cavity at the corresponding position of the fixing rib on the outer surface of the rock wool board, sleeving the anchoring gasket and the tight fixing sleeve into the fixing rib, and enabling the anchoring gasket to be abutted against the bottom surface of the concave cavity;
screwing nuts into the fixing ribs, and tightly pressing and fixing the anchoring gaskets and the rock wool boards;
installing a sealing cover body in the concave cavity to seal the concave cavity;
and step six, paving grid cloth on the outer surface of the rock wool board, and constructing plastering mortar and a decorative layer.
Through the technical scheme, the installation of the insulation board on the cantilever steel beam is realized, the operation is simple, and the connection is firm.
In conclusion, the invention has the following beneficial effects:
1. the fixing ribs penetrate through the heat insulation board, and the fixing of the rock wool heat insulation board is realized after the heat insulation board is tightly pressed by the nuts, so that the influence of wind load can be effectively resisted, and the heat insulation board is firmly fixed on the steel beam;
2. the length of the fixing rib is smaller than the thickness of the heat insulation plate, and the nut and the end head of the fixing rib are hidden in the rock wool heat insulation plate by combining the arrangement of the concave cavity, so that a heat bridge formed by the fixing rib is avoided;
3. the pointed ends of the fixing ribs are arranged, so that the rock wool board, the heat-insulating sleeve and the nut are convenient to mount, and workers can find the positions of the fixing ribs in a pressing mode more conveniently;
4. the capping body plays a better heat insulation role, and the anchoring washer and the tight fixing sleeve strengthen the connection between the heat insulation board and the steel beam, so that the overall performance of the steel beam heat insulation structure is better.
Drawings
FIG. 1 is a schematic diagram of a cornice structure of a passive house in the background art;
FIG. 2 is a schematic bottom view of a connection structure of the insulation board;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic structural bottom view of the insulation structure after installation and when the mesh cloth and the plastering mortar are not constructed.
Reference numerals: 1. a steel beam; 2. fixing the ribs; 3. rock wool boards; 31. an integral rock wool panel; 4. a concave cavity; 5. an anchor washer; 6. tightly fixing the sleeve; 7. a cover sealing body; 91. cornice; 92. a floor slab; 93. a parapet wall.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
the utility model provides a thermal-insulated structure that keeps warm that passive room steel construction cornices, combines fig. 2 and fig. 3, including the H shaped steel girder 1 of outer wall body of stretching out and many length of vertical welding at 1 side of girder steel and bottom surface be 190 mm's fixed muscle 2, the free end of fixed muscle 2 sets up the external screw thread, and fixed muscle 2 can be the harness cord that the diameter is 6 mm. Two layers of rock wool boards 3 with the thickness of 100mm are adhered to the side surfaces of the H-shaped steel beams 1, and the fixing ribs 2 penetrate into the rock wool boards 3. The outer surface of the rock wool board 3 is provided with a round concave cavity 4 corresponding to the fixing rib 2, and the depth of the concave cavity 4 is 5-6 cm. An anchoring washer 5 is arranged between the nut and the heat insulation plate, and the anchoring washer 5 can be a common plastic washer or a heat insulation washer made of polyurethane materials. The fixed bar 2 is sleeved with a tight fixed sleeve 6, the tight fixed sleeve 6 and the anchoring washer 5 are integrally formed, and the existing passive anchor bolt can be used for cutting off a nail head (a part with a smaller diameter which is inserted into concrete) and only an anchor disc and an original anchor bolt cavity tube part are left to serve as the anchoring washer 5 and the tight fixed sleeve 6. The tight fixing sleeve 6 is squeezed between the fixing rib 2 and the rock wool plate, so that the fixing of the anchoring washer 5 is realized. The heat insulation plate is fixed after the end socket of the fixing rib 2 is sleeved with a gasket and screwed into the nut. The cavity 4 is further closed by a closure body 7 shaped to fit the circular cavity 4. The cover body 7 can be made of graphite polystyrene board or rock wool. The outer surface of the rock wool board 3 is provided with a gridding cloth layer, a plastering mortar layer and a decorative layer.
Furthermore, the end of the free end of the fixing rib 2 can be processed into a pointed end, so that the fixing rib 2 can be conveniently inserted into the rock wool board 3, and the fixing sleeve 6 and the nut can be conveniently and tightly fixed and installed.
Specifically, the fixed muscle 2 of every surface of H shaped steel roof beam 1 sets up to two rows, and the finished product font interval sets up, explains with the H shaped steel roof beam 1 of 400mm height as the example, and the interval that welds two rows of fixed muscle 2 on the web is 200mm, and the distance of every row of fixed muscle 2 and H shaped steel roof beam 1 flange board is 100 mm. The distance between two adjacent fixing ribs 2 in each row is 300 mm. The arrangement mode of the fixing ribs 2 on the flange plate at the bottom of the H-shaped steel beam 1 is the same as that of the fixing ribs 2 on the web plate.
Referring to fig. 1 and 4, the steel beam 1 of the cornice 91 structure in the steel structure passive room includes a transverse steel beam 1 (see fig. 1) perpendicular to the parapet wall 93 and a longitudinal steel beam 1 (see fig. 4) parallel to the parapet wall 93, and the heat insulation structure can be adopted as long as the steel beam 1 structure located outside the wall body needs heat insulation treatment. The longeron that is located parapet 93 bottom can be earlier filled to with one deck rock wool board 3 to with parapet 93 surface parallel and level after, adopts whole rock wool board 31 to carry out the full coverability to parapet 93 and longeron, whole rock wool board 31 utilizes the heat preservation nail to fix on parapet 93.
Example 2:
a construction method of a heat preservation and insulation structure of a passive house steel structure cornice comprises the following construction steps:
firstly, vertically welding fixed ribs 2 on the outer surface of a steel beam 1, wherein the fixed ribs 2 are arranged at intervals;
secondly, installing the rock wool plate 3, wherein the fixed ribs 2 welded in advance directly penetrate through the rock wool plate 3;
thirdly, a worker presses the rock wool board 3 by hand, finds the position of the fixing rib 2, opens a round or square concave cavity 4 at the corresponding position of the fixing rib 2 on the outer surface of the rock wool board 3, then sleeves the anchoring gasket 5 and the tight fixing sleeve 6 into the fixing rib 2, and the anchoring gasket 5 is abutted against the bottom surface of the concave cavity 4;
fourthly, installing a gasket on the fixing rib 2 and screwing a nut into the gasket to tightly press and fix the anchoring gasket 5 and the rock wool plate 3;
installing a sealing cover body 7 made of a graphite polyphenyl plate in the cavity 4, sealing the cavity 4, wherein the size of the sealing cover body 7 is slightly larger than that of the cavity 4, and fixing the sealing cover body 7 by utilizing the elasticity of rock wool;
and step six, paving grid cloth on the outer surface of the rock wool board 3, and constructing plastering mortar and a decorative layer.
According to the invention, the fixing ribs 2 penetrate into the heat-insulation board, and the fixing of the rock wool heat-insulation board is realized after the heat-insulation board is tightly pressed by the nuts, so that the influence of wind load can be effectively resisted, and the heat-insulation board is firmly fixed on the steel beam 1; the length of the fixing rib 2 is smaller than the thickness of the heat insulation plate, and the nut and the end head of the fixing rib 2 are hidden in the rock wool heat insulation plate by combining the arrangement of the concave cavity 4, so that a heat bridge formed by the fixing rib 2 is avoided; the sealing cover body 7 plays a better heat insulation role, the anchoring gasket 5 and the tight fixing sleeve 6 strengthen the connection between the heat insulation plate and the steel beam 1, and the overall performance of the heat insulation structure of the steel beam 1 is better.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (8)

1. The utility model provides a heat preservation and heat insulation structure that passive room steel construction cornices, characterized by: the insulation board comprises a steel beam (1) extending out of a wall body, and a plurality of fixing ribs (2) vertically welded on the side face and the bottom face of the steel beam (1), wherein external threads are arranged at the free ends of the fixing ribs (2), insulation boards are pasted on the side face and the bottom face of the steel beam (1), the length of each fixing rib (2) is smaller than the thickness of the insulation board, the fixing ribs (2) penetrate into the insulation board, a concave cavity (4) is formed in the outer surface of the insulation board and the corresponding position of the fixing ribs (2), and the insulation board is fixed after the end heads of the fixing ribs; the surface of the insulation board is provided with a gridding cloth layer and a plastering mortar layer.
2. The heat-insulating structure for the cornice of the steel structure of the passive house as claimed in claim 1, which is characterized in that: the sealing cover is characterized by further comprising a sealing cover body (7) which is matched with the concave cavity (4) and seals the concave cavity (4), wherein the sealing cover body (7) is formed by processing graphite polystyrene boards or rock wool.
3. The heat-insulating structure for the cornice of the steel structure of the passive house as claimed in claim 1, which is characterized in that: an anchoring washer (5) is arranged between the nut and the heat insulation plate.
4. The heat preservation and insulation structure for the cornice of the steel structure of the passive house according to claim 3, which is characterized in that: the fixed rib (2) is sleeved with a tight fixed sleeve (6), and the tight fixed sleeve (6) and the anchoring washer (5) are integrally formed.
5. The heat insulation structure for the steel structure cornice of the passive house according to any one of claims 1 to 4, which is characterized in that: the end of the free end of the fixing rib (2) is a pointed end.
6. The heat insulation structure for the steel structure cornice of the passive house according to any one of claims 1 to 4, which is characterized in that: the heat preservation board is a rock wool board (3).
7. The heat insulation structure for the steel structure cornice of the passive house according to any one of claims 1 to 4, which is characterized in that: the fixed ribs (2) on each surface of the steel beam (1) are arranged in two rows, and the plurality of fixed ribs (2) are arranged in a finished product shape.
8. A construction method of a heat preservation and insulation structure of a passive house steel structure cornice is characterized by comprising the following steps: the method comprises the following construction steps:
firstly, vertically welding fixed ribs (2) on the outer surface of a steel beam (1), wherein the fixed ribs (2) are arranged at intervals;
secondly, installing the rock wool board (3), wherein the pre-welded fixing ribs (2) directly penetrate through the rock wool board (3);
step three, forming a concave cavity (4) at a corresponding position of the fixing rib (2) on the outer surface of the rock wool board (3), sleeving an anchoring gasket (5) and a tight fixing sleeve (6) into the fixing rib (2), and enabling the anchoring gasket (5) to be abutted against the bottom surface of the concave cavity (4);
screwing nuts into the fixing ribs (2), and tightly pressing and fixing the anchoring gaskets (5) and the rock wool boards (3);
step five, installing a sealing cover body (7) and sealing the concave cavity (4);
and step six, paving grid cloth on the outer surface of the rock wool board (3), and constructing surface mortar and a decorative layer.
CN201911167967.8A 2019-11-25 2019-11-25 Heat preservation and insulation structure for passive house steel structure cornice and construction method thereof Pending CN110952732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911167967.8A CN110952732A (en) 2019-11-25 2019-11-25 Heat preservation and insulation structure for passive house steel structure cornice and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911167967.8A CN110952732A (en) 2019-11-25 2019-11-25 Heat preservation and insulation structure for passive house steel structure cornice and construction method thereof

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CN110952732A true CN110952732A (en) 2020-04-03

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114960991A (en) * 2022-06-15 2022-08-30 中国二十二冶集团有限公司 Method for fixing outer wall insulation board on steel structure beam column

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114960991A (en) * 2022-06-15 2022-08-30 中国二十二冶集团有限公司 Method for fixing outer wall insulation board on steel structure beam column

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