CN114941382B - Waterproof node for concrete structure and steel stair and construction method thereof - Google Patents
Waterproof node for concrete structure and steel stair and construction method thereof Download PDFInfo
- Publication number
- CN114941382B CN114941382B CN202210612167.8A CN202210612167A CN114941382B CN 114941382 B CN114941382 B CN 114941382B CN 202210612167 A CN202210612167 A CN 202210612167A CN 114941382 B CN114941382 B CN 114941382B
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- waterproof
- concrete structure
- steel
- plate
- stair
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 111
- 239000010959 steel Substances 0.000 title claims abstract description 111
- 238000010276 construction Methods 0.000 title abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 239000002344 surface layer Substances 0.000 claims description 15
- 239000004570 mortar (masonry) Substances 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Abstract
The invention relates to a concrete structure and steel stair waterproof node and a construction method thereof, wherein the node comprises the following components: reinforcing pieces embedded in the concrete structure and corresponding to the arrangement positions of the steel stairs; the first waterproof plate is connected with the reinforcement and can be bent, a template of the concrete structure is attached to the first waterproof plate when the concrete structure is poured, and the first waterproof plate is bent to be attached to the surface of the steel stair after the concrete structure is formed; the second waterproof board is arranged on the top surface of the steel stair and connected with the first waterproof board, and the second waterproof board is non-straight. The first waterproof plate is connected with the reinforcing piece and is partially buried in the concrete structure, the first waterproof plate is blocked at the joint of the concrete structure and the steel stair, a good waterproof effect can be achieved, the second waterproof plate is connected with the first waterproof plate, the second waterproof plate is non-straight, a seepage path is increased, the waterproof effect is further improved, and the waterproof effect is good durability.
Description
Technical Field
The invention relates to the technical field of steel stair waterproof, in particular to a concrete structure and steel stair waterproof node and a construction method thereof.
Background
At present, the steel stairway and the concrete wall body are made of two different materials and cannot be tightly attached, so that when the steel stairway and the concrete wall body are adopted outdoors, no good waterproof method is adopted for treatment. The scheme that adopts at present has the increase ceiling to prevent that the rainwater from getting into the stair, in addition carry out the shutoff with waterproofing membrane or mortar in the gap department of steel stair and concrete wall, but because the durability is poor, lead to waterproof can not satisfy the operation requirement, adopt the ceiling not only to increase the cost but also can influence the building effect, make the building effect can't satisfy architect's requirement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a waterproof node of a concrete structure and a steel stair and a construction method thereof, and solves the problems that the existing gap between the steel stair and the concrete structure is blocked by waterproof coiled materials or mortar, the durability is poor, and the cost is increased and the building effect is influenced by adding a ceiling to the outdoor steel stair.
The technical scheme for achieving the purpose is as follows:
the invention provides a concrete structure and steel stair waterproof node, which comprises:
reinforcing pieces embedded in the concrete structure and corresponding to the arrangement positions of the steel stairs;
the first waterproof plate is connected with the reinforcement and can be bent, a template of the concrete structure is attached to the first waterproof plate when the concrete structure is poured, and the first waterproof plate is bent to be attached to the surface of the steel stair after the concrete structure is formed; and
the second waterproof board is arranged on the top surface of the steel stair and connected with the first waterproof board, and the second waterproof board is non-straight.
According to the waterproof node, the reinforcing piece is embedded in the concrete structure, the structural strength of the position, corresponding to the position, where the steel stair is connected, of the concrete structure is improved, the first waterproof plate and the second waterproof plate are arranged at the joint of the steel stair and the concrete structure, the first waterproof plate is connected with the reinforcing piece and is partially embedded in the concrete structure, the first waterproof plate is blocked at the joint of the concrete structure and the steel stair, a good waterproof effect can be achieved, the second waterproof plate is connected with the first waterproof plate, the second waterproof plate is in a non-straight shape, a seepage path is increased, the waterproof effect is further improved, and the waterproof node has better durability compared with the existing waterproof coiled materials and mortar plugging.
The invention further improves a waterproof node of a concrete structure and a steel stair, which is characterized in that the second waterproof plate comprises an inverted U-shaped section buckled on the first waterproof plate, a horizontal section arranged on the surface of the steel stair and connected with the inverted U-shaped section, and a vertical section connected with the horizontal section, and a wing plate of the inverted U-shaped section is clung to the concrete structure.
The concrete structure and the steel stair waterproof node are further improved in that a part of the first waterproof plate is attached to and fixedly connected with the reinforcing piece.
The concrete structure and the steel stair waterproof node are further improved in that a waterproof mortar structure is arranged at the joint of the steel stair and the concrete structure.
The concrete structure and steel stair waterproof node is further improved in that the concrete structure and steel stair waterproof node further comprises a surface layer arranged on the top surface of the steel stair, and the surface layer is embedded and fixed with the first waterproof plate and the second waterproof plate.
The invention also provides a construction method of the waterproof node of the concrete structure and the steel stair, which comprises the following steps:
when the concrete structure is constructed, reinforcing pieces are buried in the constructed concrete structure, and the setting positions of the reinforcing pieces correspond to the setting positions of the steel stairs to be constructed;
providing a first waterproof plate, connecting the first waterproof plate with the reinforcing piece, and bending the first waterproof plate to be attached to a concrete structure template when a concrete structure is constructed;
after the concrete structure is constructed, installing a steel stair, and bending the first waterproof plate to be attached to the surface of the steel stair;
providing a second waterproof board, connecting the second waterproof board with the first waterproof board, and placing the second waterproof board on the top surface of the steel stair, wherein the second waterproof board is non-flat.
The construction method is further improved in that the second waterproof board comprises an inverted U-shaped section, a horizontal section connected with the inverted U-shaped section and a vertical section connected with the horizontal section;
the inverted U-shaped section is buckled on a first waterproof plate, and a wing plate of the inverted U-shaped section is clung to the concrete structure;
placing the horizontal segment on the surface of the steel stair.
In the construction method of the present invention, when the first waterproof board is provided, the first waterproof board is partially attached to the reinforcing member and fixedly connected to the reinforcing member.
The construction method of the invention is further improved in that when the steel stairway is installed, the steel stairway is connected with the concrete structure by using the waterproof mortar structure.
The construction method of the invention is further improved in that a surface layer is constructed on the top surface of the steel stair, and the first waterproof plate and the second waterproof plate are buried and fixed by the constructed surface layer.
Drawings
Fig. 1 is a top view of the connection of a steel stairway to a concrete structure in a waterproof node of the concrete structure and the steel stairway according to the invention.
Fig. 2 is a schematic structural view of the connection of the reinforcement and the first flashing in the waterproof node of the concrete structure and the steel stairway according to the invention.
Fig. 3 is a schematic structural view of the connection between the steel stairway and the concrete structure in the waterproof node between the concrete structure and the steel stairway.
Fig. 4 is a schematic structural view of the concrete structure of the present invention and a second flashing disposed in a steel stair flashing node.
Fig. 5 is a schematic view of the structure of the concrete structure of the present invention and the surface layer provided in the waterproof node of the steel stairway.
Fig. 6 is a schematic cross-sectional view of a second flashing in a concrete structure and steel stair flashing node according to the invention.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, the invention provides a waterproof node of a concrete structure and a steel stair and a construction method thereof, which are used for solving the waterproof problem of joints of the steel stair and the concrete structure, arranging a waterproof plate between the side edge of the steel stair and the concrete structure, bending the waterproof plate, increasing a seepage path while increasing a waterproof function, and playing a good waterproof effect. When constructing concrete structure, pre-buried reinforcement utilizes the reinforcement to connect first waterproof board, and first waterproof board also has the part to bury underground in concrete structure, and then this first waterproof board keeps off to establish in steel stair and concrete structure's seam crossing, plays waterproof effect, sets up the second waterproof board on first waterproof board afterwards, accomplishes the retaining test, guarantees to be under construction surface layer ornamental material after the water leakage, has accomplished the construction of waterproof node promptly. The concrete structure and the steel stair waterproof node and the construction method thereof are described below with reference to the accompanying drawings.
Referring to fig. 1, there is shown a top view of the connection of a steel stairway to a concrete structure in a waterproof node between the concrete structure and the steel stairway according to the invention. Referring to fig. 2, a schematic structural view of the connection of the reinforcement member to the first flashing in the waterproof node of the concrete structure and steel stairway of the present invention is shown. The concrete structure and the steel stair waterproof node of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, the waterproof node of the concrete structure and the steel stair comprises a reinforcing member 21, a first waterproof plate 22 and a second waterproof plate, wherein the reinforcing member 21 is embedded in the concrete structure 12, the embedded position of the reinforcing member 21 corresponds to the arrangement position of the steel stair 11, the side edge of the steel stair 11 is obliquely attached to the surface of the concrete structure 12, preferably, the concrete structure 12 is a concrete wall, and the reinforcing member 21 is also obliquely embedded in the concrete structure 12; the first waterproof board 22 is connected with the reinforcement 21, the first waterproof board 22 can be bent, the first waterproof board 22 is attached to a formwork of the concrete structure when the concrete structure 12 is poured, and after the concrete structure 12 is molded, the first waterproof board 22 is bent to be attached to the surface of the steel stair 11; the two sides of the steel stair 11 are provided with stair beams 111, stair plates are arranged on the stair beams 111, the stair plates are in a step shape, and a platform 13 is arranged between the upper stair plate section and the lower stair plate section. The ladder beam 111 is inclined, and the first waterproof board 22 is attached to the surface of the ladder beam. As shown in fig. 4, a second flashing 23 is provided on the top surface of the steel stairway 11 and is connected to the first flashing 22, and the second flashing 23 is non-straight.
The first waterproof board 22 is connected with the reinforcement 21 and also connected with the steel stair 11, so that the first waterproof board 22 is blocked at the joint of the steel stair and the concrete structure to play a waterproof role, and the second waterproof board 23 is further arranged and connected with the first waterproof board 22, is non-flat, increases a seepage path and plays a good waterproof role.
In one embodiment of the present invention, as shown in fig. 4 and 6, the second waterproof board 23 includes an inverted U-shaped section 231 fastened to the first waterproof board 22, a horizontal section 232 disposed on the surface of the steel stair 11 and connected to the inverted U-shaped section 231, and a vertical section 233 connected to the horizontal section 232, and a wing of the inverted U-shaped section 231 is closely attached to the concrete structure 12. The horizontal section 232 is attached to the surface of the steel stair 11, and preferably the horizontal section 232 and the vertical section 233 are both disposed on the surface of the steel stair beam.
Preferably, the second waterproof board 23 is welded and fixed with the first waterproof board 22.
The second waterproof board 23 has a structure that can increase a seepage path, thereby improving waterproof effect.
In one embodiment of the present invention, as shown in fig. 2 and 3, the first waterproof board 22 has a portion attached to and fixedly connected with the reinforcing member 21.
Preferably, the portion of the first waterproof board 22 that is attached to the reinforcement 21 is buried in the concrete structure 12.
The reinforcement 21 is H-steel, and the first waterproof plate 22 is a galvanized steel plate. The upper flange and the lower flange of the I-steel are respectively adhered with and fixed with a first waterproof plate 22, the first waterproof plates 22 are firstly bent and adhered with a template of a concrete structure, after the concrete structure 12 is constructed, the first waterproof plates 22 are flattened, when the steel stairs are connected, the first waterproof plates 22 are arranged on the upper surface and the lower surface of the steel stairs, namely, the first waterproof plates 22 are adhered on the upper surface and the lower surface of the ladder beam and are fixedly connected with the ladder beam. The first waterproof board 22 is arranged on the upper side and the lower side of the joint between the steel stair 11 and the concrete structure 12 in a blocking way, and plays a role in waterproof.
In one embodiment of the present invention, as shown in fig. 3 and 4, a waterproof mortar structure 24 is disposed at the junction of the steel stair 11 and the concrete structure 12, and the joint between the steel stair and the concrete structure 12 is blocked by the waterproof mortar structure, and the first waterproof plates 22 are disposed on the upper and lower sides of the waterproof mortar structure 24, and form a waterproof structure together with the waterproof mortar structure 24, so as to play a role in waterproofing.
In one embodiment of the present invention, as shown in fig. 5, the present invention further comprises a surface layer 25 provided on the top surface of the steel stair 11, and the surface layer 25 embeds the first waterproof board 22 and the second waterproof board 23. The second waterproof board 23 is preferably a galvanized steel sheet.
The construction process of the waterproof node of the present invention will be described below.
The construction of the concrete wall is firstly carried out, in the construction process, the reinforcement and the first waterproof board with the same angle are pre-buried along the side edge of the steel stair, after the concrete wall is constructed, the exposed part of the first waterproof board is flattened, then the steel stair is installed, after the steel stair is installed, the second waterproof board is welded on the top surface of the ladder beam at the side part of the steel stair, the second waterproof board is welded with the first waterproof board, the first waterproof board is also attached to the top surface and the bottom surface of the ladder beam, the first waterproof board positioned on the bottom surface of the ladder beam is welded with the ladder beam, waterproof mortar is filled between the steel stair and the concrete wall, a water storage test is carried out after the second waterproof board is welded, and the construction of the steel stair surface layer is carried out after no leakage is ensured.
The waterproof node can reduce construction cost, achieve good waterproof effect and have good durability.
The invention also provides a construction method of the waterproof node of the concrete structure and the steel stair, and the construction method is described below.
The construction method of the invention comprises the following steps:
when the concrete structure is constructed, reinforcing pieces are buried in the constructed concrete structure, and the setting positions of the reinforcing pieces correspond to the setting positions of the steel stairs to be constructed;
providing a first waterproof plate, connecting the first waterproof plate with the reinforcing piece, and bending the first waterproof plate to be attached to a concrete structure template when the concrete structure is constructed;
after the concrete structure is constructed, installing a steel stair, and bending the first waterproof plate to be attached to the surface of the steel stair;
providing a second waterproof board, connecting the second waterproof board with the first waterproof board, and placing the second waterproof board on the top surface of the steel stair, wherein the second waterproof board is non-flat.
In one embodiment of the present invention, a second flashing is provided comprising an inverted U-shaped section, a horizontal section connected to the inverted U-shaped section, and a vertical section connected to the horizontal section;
the inverted U-shaped section is buckled on the first waterproof board, and the wing board of the inverted U-shaped section is clung to the concrete structure;
the horizontal section is placed on the surface of a steel stairway.
In one embodiment of the present invention, when the first waterproof board is provided, the first waterproof board is partially attached to the reinforcing member and fixedly connected to the reinforcing member. The part of first waterproof board subsides and establish on the reinforcement is buried in the concrete structure for first waterproof board part is buried in the concrete structure, and part exposes outside the concrete structure, and the first waterproof board that exposes outside the concrete structure is fixed with the ladder beam surface welding of steel stair side, and so first waterproof board keeps off and has established in seam crossing, has played waterproof effect.
In one embodiment of the invention, the steel stairway is connected with the concrete structure by a waterproof mortar structure when the steel stairway is installed.
In one embodiment of the invention, the method further comprises constructing a surface layer on the top surface of the steel stair, and burying and fixing the first waterproof plate and the second waterproof plate by utilizing the constructed surface layer.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (2)
1. A concrete structure and steel stairway waterproof node, comprising:
reinforcing pieces embedded in the concrete structure and corresponding to the arrangement positions of the steel stairs;
the first waterproof plate is connected with the reinforcement and can be bent, a template of the concrete structure is attached to the first waterproof plate when the concrete structure is poured, and the first waterproof plate is bent to be attached to the surface of the steel stair after the concrete structure is formed; and
the second waterproof board is arranged on the top surface of the steel stair and connected with the first waterproof board, and is non-straight;
the second waterproof board comprises an inverted U-shaped section buckled on the first waterproof board, a horizontal section arranged on the surface of the steel stair and connected with the inverted U-shaped section, and a vertical section connected with the horizontal section, and a wing plate of the inverted U-shaped section is clung to the concrete structure;
the first waterproof plate is partially adhered to and fixedly connected with the reinforcing piece;
a waterproof mortar structure is arranged at the joint of the steel stair and the concrete structure;
the surface layer is arranged on the top surface of the steel stair, and the first waterproof plate and the second waterproof plate are buried and fixed in the surface layer;
the two sides of the steel stair are provided with ladder beams which are obliquely arranged, and the bent first waterproof plates are attached to the surfaces of the ladder beams;
the reinforcement is H-shaped steel, two first waterproof plates are arranged, and the two first waterproof plates are attached to the upper surface and the lower surface of the ladder beam and fixedly connected with the ladder beam.
2. A method of constructing a concrete structure and steel stairway watertight joint as claimed in claim 1, including the steps of:
when the concrete structure is constructed, reinforcing pieces are buried in the constructed concrete structure, and the setting positions of the reinforcing pieces correspond to the setting positions of the steel stairs to be constructed;
providing a first waterproof plate, connecting the first waterproof plate with the reinforcing piece, and bending the first waterproof plate to be attached to a concrete structure template when a concrete structure is constructed;
after the concrete structure is constructed, installing a steel stair, and bending the first waterproof plate to be attached to the surface of the steel stair;
providing a second waterproof board, connecting the second waterproof board with the first waterproof board, and placing the second waterproof board on the top surface of the steel stair, wherein the second waterproof board is not straight;
the second waterproof board comprises an inverted U-shaped section, a horizontal section connected with the inverted U-shaped section and a vertical section connected with the horizontal section;
the inverted U-shaped section is buckled on a first waterproof plate, and a wing plate of the inverted U-shaped section is clung to the concrete structure;
placing the horizontal section on the surface of the steel stair;
when the first waterproof plate is arranged, the first waterproof plate part is attached to the reinforcing piece and fixedly connected with the reinforcing piece;
when the steel stairway is installed, the steel stairway is connected with the concrete structure by utilizing a waterproof mortar structure;
constructing a surface layer on the top surface of the steel stair, and burying and fixing the first waterproof plate and the second waterproof plate by utilizing the constructed surface layer;
the two sides of the steel stair are provided with ladder beams which are obliquely arranged, and the bent first waterproof plates are attached to the surfaces of the ladder beams;
the reinforcement is H-shaped steel, two first waterproof plates are arranged, and the two first waterproof plates are attached to the upper surface and the lower surface of the ladder beam and fixedly connected with the ladder beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210612167.8A CN114941382B (en) | 2022-05-31 | 2022-05-31 | Waterproof node for concrete structure and steel stair and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210612167.8A CN114941382B (en) | 2022-05-31 | 2022-05-31 | Waterproof node for concrete structure and steel stair and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114941382A CN114941382A (en) | 2022-08-26 |
| CN114941382B true CN114941382B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210612167.8A Active CN114941382B (en) | 2022-05-31 | 2022-05-31 | Waterproof node for concrete structure and steel stair and construction method thereof |
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| CN (1) | CN114941382B (en) |
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| CN110847393A (en) * | 2019-12-18 | 2020-02-28 | 中国建筑第四工程局有限公司 | Rapidly-assembled stepped waterproof edge folding plate |
| CN111827493A (en) * | 2020-06-04 | 2020-10-27 | 绿城房地产集团有限公司 | Waterproof structure of balcony door lower opening node |
| CN213710150U (en) * | 2020-10-22 | 2021-07-16 | 安徽富煌建筑设计研究有限公司 | Connecting structure of precast concrete stair and ladder beam |
| CN213979651U (en) * | 2020-11-10 | 2021-08-17 | 南通长城建筑科技有限公司 | Prefabricated staircase that light composite formwork exempts from to tear open |
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| CN214531602U (en) * | 2021-03-25 | 2021-10-29 | 上海天华建筑设计有限公司 | Arch-shaped anti-seismic connecting joint of prefabricated reinforced concrete stair |
| CN215630742U (en) * | 2021-04-08 | 2022-01-25 | 广东睿固建设科技有限公司 | Deformation joint waterproof construction is striden to roofing height |
| CN214995392U (en) * | 2021-05-31 | 2021-12-03 | 远大住宅工业（上海）有限公司 | Prefabricated staircase side connected node |
| CN113431215A (en) * | 2021-06-29 | 2021-09-24 | 中建五局第三建设有限公司 | Waterproof structure of building bearing plate concrete construction joint and construction method thereof |
| CN113931295A (en) * | 2021-10-20 | 2022-01-14 | 富利建设集团有限公司 | Prefabricated building and construction method thereof |
| CN216552442U (en) * | 2021-12-01 | 2022-05-17 | 厦门佰地建筑设计有限公司 | Prefabricated staircase and cast-in-place shear force wall connection structure |
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