CN211817289U - Structure of passive district boundary and non-passive district boundary of steel construction ultralow energy consumption building - Google Patents
Structure of passive district boundary and non-passive district boundary of steel construction ultralow energy consumption building Download PDFInfo
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- CN211817289U CN211817289U CN202020174190.XU CN202020174190U CN211817289U CN 211817289 U CN211817289 U CN 211817289U CN 202020174190 U CN202020174190 U CN 202020174190U CN 211817289 U CN211817289 U CN 211817289U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 238000005265 energy consumption Methods 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 239000011490 mineral wool Substances 0.000 claims abstract description 72
- 239000004744 fabric Substances 0.000 claims abstract description 36
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims abstract description 22
- 239000003513 alkali Substances 0.000 claims abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 10
- 238000004873 anchoring Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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Abstract
The utility model discloses a structure for dividing a passive area and a non-passive area of a steel structure ultra-low energy consumption building, which adopts the technical scheme that a top plate structure of a basement is an H-shaped steel beam welded steel bar truss floor bearing plate, and the bottom surface of the steel bar truss floor bearing plate is a profiled steel sheet; the bottom surface of the profiled steel sheet is sequentially provided with an interfacial agent layer, a first bonding mortar layer and rock wool strips; the rock wool strips at the bottom of the profiled steel sheet are fixed in the floor support plate by adopting alkali-resistant mesh cloth and a passive anchor bolt; the outer peripheral surface of the steel beam is sprayed with a fireproof paint layer, a layer of rock wool strips is adhered to the bottom surface of the flange plate at the bottom of the steel beam, two layers of rock wool strips are adhered to two sides of the web plate, and the outer surface of the outer layer of rock wool strip is flush with the side surfaces of the rock wool strips at the bottom surface of the flange plate; a layer of rock wool strips are arranged on the inner surface of the outer wall of the basement within 1m from the bottom surface of the top plate; and an extrusion molding plate layer is stuck on the outer surface of the outer wall. The utility model has the advantages that can form fine separation between frame construction building passive district and passive district, reduce the heat transfer between two districts, construction convenience moreover.
Description
Technical Field
The utility model relates to a low energy consumption building technical field, in particular to structure of passive district and non-passive district boundary of steel construction ultralow energy consumption building.
Background
At present, under the background of global warming and energy shortage, building energy conservation with high energy efficiency and low emission as the core plays a crucial role in realizing energy safety and sustainable development of the country. The ultra-low energy consumption building (also called passive house) is developed and popularized, various passive energy-saving means such as natural ventilation, natural lighting, solar radiation heating and indoor non-heating heat source heating are combined with the high-efficiency energy-saving technology of the building enclosure structure, the dependence on an active mechanical heating and refrigerating system is eliminated to the maximum extent by greatly reducing the heat/cold load of the building on the premise of ensuring the indoor environmental comfort, so that the building heating and refrigerating energy consumption is reduced, meanwhile, renewable energy sources are fully utilized so as to be eliminated from the dependence on the traditional fossil energy sources, and the ultra-low energy consumption building becomes an important means of energy conservation and emission reduction in the world building energy-saving technology leading the country.
However, the ultra-low energy consumption building is still in the starting stage at home, and particularly due to different climatic and geographical conditions, the passive house technology which is mature abroad cannot be directly used at home. The passive ultra-low energy consumption building requires a complete heat preservation and insulation ring, namely, heat preservation and insulation measures are required on all four sides of the building. If the basement is a passive area, the basement bottom plate needs to be provided with heat preservation measures, but domestic basements are generally wet and heat preservation of the basement is difficult to realize due to reasons such as underground water and the like, so that domestic ultra-low energy consumption buildings generally do not cover the underground part, and therefore the basement serving as the non-passive area in the domestic buildings needs to be subjected to heat preservation and isolation from the passive area on the upper part of the basement.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a structure of steel construction ultralow energy consumption building passive region and non-passive region boundary, its advantage is that can reduce thermal transmission between the two, construction convenience moreover with the fine partition of passive region and non-passive region of frame construction building.
The above object of the present invention can be achieved by the following technical solutions: the basement is a non-passive area, and the upper floor is a passive area; the top plate structure of the basement is characterized in that a steel bar truss floor bearing plate is welded on an H-shaped steel beam, and the bottom surface of the steel bar truss floor bearing plate is a profiled steel plate; the bottom surface of the profiled steel sheet is sequentially provided with an interfacial agent layer, a first bonding mortar layer and rock wool strips; after the rock wool strips at the bottom of the profiled steel sheet are integrally pulled by adopting alkali-resistant grid cloth, fixing the rock wool strips in the floor support plate by adopting an anchor bolt through a passive anchor bolt;
the outer peripheral surface of the steel beam is sprayed with a fireproof paint layer, a layer of rock wool strips is adhered to the bottom surface of the flange plate at the bottom of the steel beam, two layers of rock wool strips are adhered to two sides of the web plate, and the outer surface of the outer layer of rock wool strip is flush with the side surfaces of the rock wool strips at the bottom surface of the flange plate;
a layer of rock wool strips are arranged on the inner surface of the outer wall of the basement within 1m from the bottom surface of the top plate; an extrusion molding plate layer is pasted on the outer surface of the basement outer wall, the upper end and the lower end of one part of the extrusion molding plate layer respectively extend to the ground, and the other part of the extrusion molding plate layer extends to the position below the ground.
According to the technical scheme, rock wool strips are arranged on the bottom surface of the top plate and the inner side of the outer wall in the indoor part in a downward 1m returning mode, and rock wool is wrapped on the steel beam, so that a complete isolation and heat insulation structure is formed; the extruded sheet of the outdoor part extends from the ground to the underground, so that the outdoor soil body and the passive area are better prevented from forming heat exchange.
Because the rock wool board adopts polymer bonding mortar to paste on concrete or masonry structure generally, and the bottom surface of floor carrier plate is profiled steel sheet, polymer bonding mortar can't form the bonding, so through applying paint the interfacial agent with a brush earlier, treat 24 hours later, smear bonding mortar again and bond the rock wool strip of single lighter matter temporarily on profiled steel sheet, then link rock wool strip with alkali-resisting net cloth and become whole, then carry out permanent fixed with passive crab-bolt, the wholeness and the bonding fastness on the rock wool layer have been guaranteed on the one hand, thereby quality and safety have been guaranteed, on the other hand has made things convenient for the construction greatly.
The utility model discloses further set up to: the bottom surface of the steel beam is sequentially provided with a fireproof paint layer, an alkali-resistant mesh fabric, bonding mortar and rock wool strips; the side of girder steel web sets gradually fireproof paint layer, alkali-resisting net cloth, bonding mortar, rock wool strip, alkali-resisting net cloth, bonding mortar and rock wool strip.
Through above-mentioned technical scheme, after painting the fireproof paint on the girder steel, the bonding mortar can bond with the fireproof paint to the realization bonds the rock wool strip on the girder steel.
The utility model discloses further set up to: the steel beam is characterized by further comprising wrapped gridding cloth and anchoring studs, wherein the wrapped gridding cloth wraps the bottom surface of the steel beam and rock wool strips on the side surface of the steel beam, and the anchoring studs penetrate through the wrapped gridding cloth from the side surface of the steel beam and then are inserted into the surface of the web plate.
Through above-mentioned technical scheme, the inlayer rock wool strip of two flange boards receives the bonding power and the extrusion of edge of a wing board of bonding mortar about the embedding girder steel, so fixed most firm, draws with the outer rock wool strip of girder steel bottom and side and inlayer rock wool through parcel net cloth and anchor peg and connects, forms wholly for all rock wool strips installation is firm.
The utility model discloses further set up to: the basement also comprises an inner partition wall, and a layer of rock wool strips are arranged on the surface of the inner partition wall within 1m from the bottom surface of the top plate.
Through above-mentioned technical scheme, reduce and pass through the heat that interior partition wall spreads into roof and gets into passive district.
The utility model discloses further set up to: the exposed surfaces of all the rock wool strips are coated with coating decorative surfaces.
Through above-mentioned technical scheme, promote the impression quality of basement.
The utility model discloses further set up to: the extrusion molding plate layer on the outer surface of the basement outer wall comprises two layers of extrusion molding plates with the thickness of 100mm, and the upper end and the lower end of the extrusion molding plate layer respectively extend to 500mm above the ground and 2000mm below the ground.
Through the technical scheme, the extruded sheet is used for heat preservation and isolation at the boundary, so that heat exchange is further reduced, energy consumption is reduced, and the extruded sheet has excellent and lasting heat insulation performance, excellent water resistance and moisture resistance and durability.
The utility model discloses further set up to: the outer surface of the extruded sheet layer is paved with waterproof coiled materials, and the waterproof coiled materials extend to the bottom plate of the basement and are connected with the waterproof coiled materials below the bottom plate into a whole.
Through above-mentioned technical scheme, prevent that moisture from getting into basement outer wall from the splice joint department of two extruded sheet.
The utility model discloses further set up to: the bottom of the extruded sheet is provided with a concrete strip foundation for supporting.
Through above-mentioned technical scheme, the extruded sheet can be supported to the bar basis, prevents to drop out the outer wall surface because of local soil body when sinking, extruded sheet.
To sum up, the utility model discloses following beneficial effect has:
1. the passive area and the non-passive area of the frame structure building can be well separated, and the heat transfer between the passive area and the non-passive area is reduced;
2. the rock wool strips are temporarily bonded through the interface agent and the bonding mortar, and then are connected into a whole by the alkali-resistant gridding cloth and the passive anchor bolt and fixed on the lower surface of the top plate, so that the construction is convenient and efficient, and the integrity is good;
3. the rock wool strips around the steel beam are connected into a whole by wrapping the grid cloth and anchoring studs, so that the installation is firmer;
4. through the arrangement of the external wall external insulation board, the waterproof coiled material and the like, a continuous heat-preservation waterproof reinforcing layer is formed in a passive and non-passive transition area, and the heat-preservation and heat-insulation continuity of a passive area is guaranteed.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a basement roof structure;
fig. 3 is an enlarged view of a portion a of fig. 1.
Reference numerals: 1. a top plate; 11. profiled steel sheets; 12. an interfacial agent layer; 13. a passive anchor bolt; 14. a first bonded mortar layer; 2. a steel beam; 3. rock wool strips; 4. alkali-resistant mesh cloth; 5. anchoring the stud; 6. wrapping mesh cloth; 7. an outer wall; 71. extruding a plate layer; 72. a strip foundation; 73. a water-dispersing plate; 74. waterproof coiled materials; 8. an inner partition wall.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A structure of a boundary between a passive area and a non-passive area of a steel structure ultralow-energy-consumption building comprises a basement and a basement upper floor, wherein the basement is the non-passive area, and the upper floor is the passive area. This building is frame construction, and 1 structure of roof of basement is welding steel bar truss building carrier plate on H shaped steel roof 2, combines fig. 2, and the bottom surface of steel bar truss building carrier plate is profiled sheet 11, and profiled sheet 11 bottom surface has set gradually interfacial agent layer 12, first bonding mortar layer 14 and the rock wool strip 3, alkali-resisting net cloth 4, the mortar of plastering and coating veneer (not drawn) that 100mm is thick. The rock wool strips 3 and the alkali-resistant mesh cloth 4 are fixed on the bottom surface of the top plate 1 by adopting a passive anchor bolt 13 with the length of 155 mm. The anchor plate of the passive anchor bolt 13 is pressed on the alkali-resistant mesh cloth 4, and the alkali-resistant mesh cloth 4 connects the plurality of rock wool strips 3 into a whole. Utilize the interfacial agent to bond firmly with 11 bottom surfaces of profiled sheet, and possess high bonding strength's characteristics with the bonding mortar, realize the temporary fixation to rock wool strip 3, then with alkali-resisting net cloth 4 and passive crab-bolt 13 permanent fixation, guaranteed to connect wholly reliably, the high efficiency of construction is convenient moreover.
As shown in fig. 3, the height of the steel beam 2 is 400mm, the width thereof is 300mm, and the bottom surface thereof is sequentially provided with a fireproof paint layer, an alkali-resistant mesh cloth 4, polymer bonding mortar and rock wool strips 3 with the thickness of 100 mm; the side of 2 webs of girder steel is provided with two-layer rock wool strip 3, specifically, sets gradually fire prevention lacquer layer, alkali-resisting net cloth, polymer bonding mortar, 85mm thick rock wool strip 3, alkali-resisting net cloth 4, polymer bonding mortar and 100mm thick rock wool strip 3 from inside to outside. The outer surface of the outer rock wool strip 3 of web is flush with the side of the rock wool strip 3 on the bottom surface of the flange plate. The bottom surface of the steel beam 2 and the rock wool strips 3 on the side surface are wrapped by the wrapping gridding cloth 6, and the anchoring studs 5 penetrate through the wrapping gridding cloth 6 from the side surface of the steel beam 2 and then are inserted into the surface of the web plate. After the installation is finished, the exposed surface of the rock wool strips 3 is provided with plastering mortar and a coating facing.
Referring back to fig. 1, the inner surface of the basement outer wall 7 and the surface of the inner partition wall 8 are bonded with a layer of rock wool strips 3 by using bonding mortar within 1m from the bottom surface of the top plate 1. The outer surface of the basement outer wall 7 is adhered with an extrusion molding plate layer 71 on a conventional hot-melt waterproof layer, the extrusion molding plate layer 71 comprises two layers of extrusion molding plates with the thickness of 100mm, and the upper end and the lower end of the extrusion molding plate layer 71 are respectively extended to 500mm above the ground and 2000mm below the ground by taking +/-0.0 of a building as a boundary. The outer surface of the extrusion molding board layer 71 is paved with a self-adhesive waterproof coiled material 74, and the waterproof coiled material 74 extends to the bottom plate of the basement and is connected with the waterproof coiled material below the bottom plate into a whole. The bottom of the extruded sheet layer 71 is provided with a concrete strip foundation 72 for support. The outer side surface of the extrusion molding plate layer 71 is provided with a concrete water-dispersing plate 73 close to the ground, so that the ground water seepage and the water diversion are conducted to the position far away from the outer wall 7. The structure of the outer wall forms a continuous heat-preservation waterproof reinforcing layer in a passive and non-passive transition area, and the heat-preservation and heat-insulation continuity of a passive area is guaranteed.
During construction, firstly spraying fireproof paint on the steel beam 2, then installing grid cloth on the side face of a web plate, smearing adhesive mortar, adhering a first layer of rock wool strips 3, and adhering a second layer of rock wool strips 3; a layer of rock wool strips 3 is adhered to the bottom surface of the bottom flange plate, a wrapping gridding cloth 6 is installed, and the top surface of the wrapping gridding cloth 6 extends to the lower surface of the top plate 1; the anchoring studs 5 are driven into the wrapping mesh cloth 6 and the two layers of rock wool strips 3 from the side until the anchoring studs are inserted into the surface of the web plate of the steel beam 2. After the interface agent is coated on the bottom surface of the profiled steel sheet 11 of the top plate 1, after the interface agent is dried for 24 hours, the rock wool strips are pasted by the pasting mortar one by one to realize temporary fixation; then, the bottom surfaces of the rock wool strips 3 are paved with the alkali-resistant gridding cloth 4, a plurality of rock wool strips 3 are connected into a whole, and then the rock wool strips 3 are fixed on the top plate 1 by the passive anchor bolts 13. The passive anchors 13 are arranged in a quincunx pattern and the spacing may be 400 x 300 mm. Then installing the rock wool strips 3 on the outer wall 7 and the inner partition wall 8.
After the installation is completed, the drawing test of the rock wool strips 3 on the lower surface of the top plate 1 should be more than 0.6N, and the drawing test of the rock wool strips 3 on the outer wall 7 and the inner partition wall 8 should be more than 0.3N.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a structure of passive district of ultra-low energy consumption building of steel construction and non-passive district boundary, includes basement and basement upper portion floor, characterized by: the basement is a non-passive area, and the upper floor is a passive area; the top plate (1) of the basement is structurally characterized in that a steel bar truss floor bearing plate is welded on an H-shaped steel beam (2), and the bottom surface of the steel bar truss floor bearing plate is a profiled steel plate (11); the bottom surface of the profiled steel sheet (11) is sequentially provided with an interfacial agent layer (12), a first bonding mortar layer (14) and a plurality of rock wool strips (3); the rock wool strips (3) at the bottom of the profiled steel sheet (11) are pulled and integrated by adopting alkali-resistant mesh cloth (4), and then are fixed in the floor support plate by using passive anchor bolts (13);
the fireproof paint layer is sprayed on the peripheral surface of the steel beam (2), a layer of rock wool strips (3) is pasted on the bottom surface of the flange plate at the bottom of the steel beam (2), two layers of rock wool strips (3) are pasted on two sides of the web plate, and the outer surface of the outer layer of rock wool strip (3) is flush with the side surfaces of the rock wool strips (3) at the bottom surface of the flange plate;
a layer of rock wool strips (3) are arranged on the inner surface of the basement outer wall (7) within 1m from the bottom surface of the top plate (1); an extrusion molding plate layer (71) is adhered to the outer surface of the basement outer wall (7), the upper end and the lower end of one part of the extrusion molding plate layer (71) extend to the ground, and the other part of the extrusion molding plate layer extends to the position below the ground.
2. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 1, wherein: the bottom surface of the steel beam (2) is sequentially provided with a fireproof paint layer, alkali-resistant gridding cloth, bonding mortar and rock wool strips (3); the side of the web plate of the steel beam (2) is sequentially provided with a fireproof paint layer, alkali-resistant mesh cloth, bonding mortar, rock wool strips (3), alkali-resistant mesh cloth (4), bonding mortar and rock wool strips (3).
3. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 2, characterized in that: still including parcel net cloth (6) and anchor peg (5), parcel net cloth (6) are with girder steel (2) bottom surface and rock wool strip (3) parcel of side, and anchor peg (5) are inserted to the web surface after passing parcel net cloth (6) from girder steel (2) side.
4. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 3, characterized in that: the basement also comprises an inner partition wall (8), and a layer of rock wool strips (3) are arranged in the range of the surface of the inner partition wall (8) returning 1m from the bottom surface of the top plate (1).
5. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 4, wherein: the exposed surfaces of all the rock wool strips (3) are coated with coating decorative surfaces.
6. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 1, wherein: the extrusion molding plate layer (71) comprises two layers of extrusion molding plates with the thickness of 100mm, and the upper end and the lower end of the extrusion molding plate layer (71) respectively extend to 500mm above the ground and 2000mm below the ground.
7. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 6, wherein: and a waterproof coiled material (74) is laid on the outer surface of the extrusion molding plate layer (71), and the waterproof coiled material (74) extends to the bottom plate of the basement and is connected with the waterproof coiled material below the bottom plate into a whole.
8. The structure of the boundary between the passive area and the non-passive area of the steel structure ultra-low energy consumption building as claimed in claim 7, wherein: the bottom of the extrusion molding plate layer (71) is provided with a concrete strip foundation (72) for supporting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020174190.XU CN211817289U (en) | 2020-02-15 | 2020-02-15 | Structure of passive district boundary and non-passive district boundary of steel construction ultralow energy consumption building |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020174190.XU CN211817289U (en) | 2020-02-15 | 2020-02-15 | Structure of passive district boundary and non-passive district boundary of steel construction ultralow energy consumption building |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216473A (en) * | 2021-05-25 | 2021-08-06 | 上海宝冶集团有限公司 | First-floor curtain wall node with basement passive ultra-low energy consumption building and implementation method |
| CN113882243A (en) * | 2021-11-19 | 2022-01-04 | 中交隧道工程局有限公司 | Imitation fair-faced concrete coating structure and method suitable for steel structure surface |
-
2020
- 2020-02-15 CN CN202020174190.XU patent/CN211817289U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216473A (en) * | 2021-05-25 | 2021-08-06 | 上海宝冶集团有限公司 | First-floor curtain wall node with basement passive ultra-low energy consumption building and implementation method |
| CN113882243A (en) * | 2021-11-19 | 2022-01-04 | 中交隧道工程局有限公司 | Imitation fair-faced concrete coating structure and method suitable for steel structure surface |
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