CN114775797A - Extensible tree-shaped modular wood structural unit - Google Patents

Extensible tree-shaped modular wood structural unit Download PDF

Info

Publication number
CN114775797A
CN114775797A CN202210526811.XA CN202210526811A CN114775797A CN 114775797 A CN114775797 A CN 114775797A CN 202210526811 A CN202210526811 A CN 202210526811A CN 114775797 A CN114775797 A CN 114775797A
Authority
CN
China
Prior art keywords
bolt
steel sheet
tree
notch
downpipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210526811.XA
Other languages
Chinese (zh)
Inventor
沈冰珏
励姿玮
邓棋
方欣然
孙旌铨
黄丽文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Tech University
Original Assignee
Nanjing Tech University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Tech University filed Critical Nanjing Tech University
Priority to CN202210526811.XA priority Critical patent/CN114775797A/en
Publication of CN114775797A publication Critical patent/CN114775797A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • 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
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2628—Interlocking connectors, e.g. with hooks or dovetails, added to the elongated wooden members
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2676—Connector nodes
    • 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
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B2001/5875—Connections for building structures in general of bar-shaped building elements using exterior clamping plates or shells

Abstract

The invention discloses an expandable tree-shaped modular wood structure unit which is characterized by comprising a column, a main beam, a primary frame beam, a secondary frame beam, a connecting beam, a filter plate, a first steel sheet, a second steel sheet, a third steel sheet, a fourth steel sheet, a bolt, a nut and a downpipe; the top of the column is provided with a first notch for accommodating the bolt and the first steel sheet; the invention has the advantages of modularized components, limited and fixed types of forms, convenient assembly, strong adaptability to expansion, short production period, cost reduction and capability of being prefabricated in factories and installed on site.

Description

Extensible tree-shaped modular wood structure unit
Technical Field
The invention relates to and discloses an expandable tree-shaped modular wood structure unit.
Background
With the continuous development of human society, the climate problem becomes more severe, and the emission of greenhouse gases such as carbon dioxide is the main culprit of global warming. To achieve sustainable development, carbon neutralization becomes an important criterion for future building design driven by the "dual carbon goal".
The net carbon emission of the wood structure in the whole process of felling, processing and transporting wood is-0.9 ton/m3The wood used by the whole building can store less carbon dioxide in the use stage of the wood than the carbon dioxide consumed in the manufacture and transportation of other building materials, and is an environment-friendly material.
Modularization is a design method that takes advantage of the form of decomposition and combination from a system perspective to achieve the best benefits of the product. The modules can be expanded and combined, are tightly connected and are convenient to disassemble and assemble. By using the modular design method, the design and production period can be shortened by standardizing mass production modules, so that the production efficiency is higher, the market demand is better met, and the cost is reduced.
The tree structure is a building structure with building form aesthetic feeling and structure bearing function, the natural appearance of the tree structure is suitable for specific site conditions, such as that the building needs to face a landscape surface or be in a natural environment, and the tree structure is often used by architects in building design with special requirements. The existing components are not modularized, the types of the components are different, the expansion is inconvenient, the production cycle is long, the cost is high, wood structure connecting nodes are exposed and thick, and the wood structure connecting nodes are not attractive and the tree-shaped structure is mostly a steel structure.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an expandable tree-shaped modular wood structure unit.
The specific technical scheme of the invention is as follows: an expandable tree-shaped modular wood structure unit is characterized by comprising a column, a main beam, a primary frame beam, a secondary frame beam, a connecting beam, a filter plate, a first steel sheet, a second steel sheet, a third steel sheet, a fourth steel sheet, a bolt, a nut and a downpipe;
the top of the column is provided with a first notch for accommodating the bolt and the first steel sheet;
the bottom of the main beam is provided with a second notch for accommodating a bolt and a first steel sheet, the first steel sheet is embedded into the second notch, and the fixed column and the main beam are tightly connected through the bolt and a nut to form a single-support main body structure;
two ends of the primary frame beam are provided with third notches for accommodating the bolts and the second steel sheet;
a fourth notch for accommodating the bolt and the second steel sheet is formed in one end, connected with the first-stage frame beam, of the connecting beam, and a fifth notch for accommodating the bolt and the fourth steel sheet is formed in one end, connected with the second-stage frame beam, of the connecting beam;
the two ends of the secondary frame beam are provided with sixth notches for accommodating a bolt and a third steel sheet, the middle of the secondary frame beam is provided with a seventh notch for accommodating the bolt and a fourth steel sheet, the upper end of the main beam is provided with an eighth notch for accommodating the bolt and the third steel sheet, and the middle of the main beam is provided with a ninth notch for accommodating the bolt and the second steel sheet;
the water pipe is a hollow square pipe, four sides of the water pipe are welded with water pipe steel sheets, and bolt notches are formed in the water pipe steel sheets.
As a further limitation of the present invention, the length of the outside of the downpipe is equal to or slightly less than the length of the inside of the bottom surface of the column.
As a further limitation of the present invention, the column has four sides, and a tenth notch aligned with the bolt notch formed on the downpipe steel sheet is formed in the middle of each of the four sides.
As a further limitation of the invention, the downpipe steel sheet is provided with bolt notches, the middle part of the four sides of the column is provided with tenth notches which are aligned with the bolt notches arranged on the downpipe steel sheet, and the bolt and the nut are tightly connected and fixed in a concealed manner to form a tree-shaped main body structure.
As a further limitation of the invention, the top of the tree-shaped main body structure is provided with a filter plate, and four corners of the filter plate are provided with bayonets.
As a further limitation of the present invention, the primary frame beam is connected to the middle of a main beam of the tree-shaped main body structure through a second steel sheet, a bolt and a nut;
the second grade frame roof beam passes through third steel sheet, bolt and nut and connects in tree-shaped major structure's girder upper end, even the roof beam passes through fourth steel sheet, bolt and nut one end and connects in second grade frame roof beam middle part, even the roof beam passes through second steel sheet, bolt and nut one end and connects in the girder middle part, forms tree-shaped structure unit.
As a further limitation of the present invention, the columns, main beams, primary frame beams, secondary frame beams, and coupling beams are wooden members.
The invention has the technical effects that:
1. the components are modularized, the types of the forms are limited and fixed, the assembly and expansion adaptability is convenient, the production period is short, the cost is reduced, and the components can be prefabricated in factories and installed on site;
2. the wood structure connecting node adopts a hidden node, so that the appearance is attractive;
3. the wood structure is environment-friendly, energy-saving and emission-reducing;
4. the downpipe can play a role in collecting rainwater;
5. the tree structure is beautiful and interesting.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is an exploded structural view of the present invention.
Fig. 3 is a schematic view of the assembly structure of fig. 1.
Fig. 4 is a schematic view of the main structure installation.
Fig. 5 is a schematic view of the frame beam and coupling beam structure.
Fig. 6 is a steel sheet structure view of the beam.
Fig. 7 is a main beam structure view.
Fig. 8 is a schematic view of a column and downspout configuration.
Fig. 9 is a view of the assembled structure of a column and a downspout.
Fig. 10 is a view showing an assembled structure of columns and main beams.
FIG. 11 is a structural view of the steel sheet.
FIG. 12 is a schematic view of a second steel sheet structure.
FIG. 13 is a three-structure schematic view of a steel sheet.
FIG. 14 is a schematic view of a four piece steel construction.
FIG. 15 is a schematic view of a filter plate structure.
In the figure: the steel column comprises a column 1, a main beam 2, a first-stage frame beam 4, a second-stage frame beam 3, a connecting beam 5, a filter plate 6, a first steel sheet 7, a second steel sheet 8, a third steel sheet 9, a fourth steel sheet 10, a bolt 11, a nut 12, a downpipe 13, a first notch 1b, a second notch 2a, a sixth notch 3a, a third notch 4a, a fourth notch 5a, a fifth notch 5b, a seventh notch 3b, an eighth notch 2c, a ninth notch 2b, a tenth notch 1a, a downpipe steel sheet 13a and a bolt notch 13 aa.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 15, an expandable tree-shaped modular wood structural unit in this embodiment includes a column 1, a main beam 2, a primary frame beam 4, a secondary frame beam 3, a connecting beam 5, a filter plate 6, a first steel sheet 7, a second steel sheet 8, a third steel sheet 9, a fourth steel sheet 10, a bolt 11, a nut 12, and a downpipe 13;
the top of the column 1 is provided with a first notch 1b for accommodating the bolt 11 and the first steel sheet 7;
the bottom of the main beam 2 is provided with a second notch 2a for accommodating a bolt 11 and a first steel sheet 7, the first steel sheet 7 is embedded into the second notch 2a, and the fixed column 1 and the main beam 2 are tightly connected through the bolt 11 and a nut 12 to form a single-support main body structure; the bolt and the nut are matched in size.
Two ends of the primary frame beam 4 are provided with third notches 4a for accommodating the bolts 11 and the second steel sheets 8;
one end of the connecting beam 5, which is connected with the primary frame beam 4, is provided with a fourth notch 5a for accommodating a bolt 11 and a second steel sheet 8, and one end of the connecting beam 5, which is connected with the secondary frame beam 3, is provided with a fifth notch 5b for accommodating the bolt 11 and a fourth steel sheet 10;
the two ends of the secondary frame beam 3 are provided with sixth notches 3a for accommodating a bolt 11 and a third steel sheet 9, the middle of the secondary frame beam 3 is provided with a seventh notch 3b for accommodating the bolt 11 and a fourth steel sheet 10, the upper end of the main beam 2 is provided with an eighth notch 2c for accommodating the bolt 11 and the third steel sheet 9, and the middle of the main beam 2 is provided with a ninth notch 2b for accommodating the bolt 11 and the second steel sheet 8; the first steel sheet, the second steel sheet, the third steel sheet and the fourth steel sheet are not exposed. The first steel sheet, the second steel sheet, the third steel sheet and the fourth steel sheet adopt proper forms according to different connecting and fixing positions, and the connecting and fixing positions which are different in position and have the same connecting function adopt the same forms of the first steel sheet, the second steel sheet, the third steel sheet and the fourth steel sheet.
The downpipe 13 is a hollow square pipe, four sides of the downpipe 13 are welded with downpipe steel sheets 13a, and the downpipe steel sheets 13a are provided with bolt notches 13 aa.
In this embodiment, the outer length of the downpipe 13 is equal to or slightly less than the inner side length of the bottom surface of the column 1.
In this embodiment, the column 1 has four sides, and the center of the four sides is provided with a tenth notch 1a aligned with the bolt notch 13aa formed on the downpipe steel sheet 13 a.
In this embodiment, the downpipe steel sheet 13a is provided with a bolt notch 13aa, and the column 1 has a tenth notch 1a, a bolt 11 and a nut 12, which are aligned with the bolt notch 13aa on the downpipe steel sheet 13a, and are concealed and tightly connected and fixed in the middle of the four sides to form a tree-shaped main body structure.
In this embodiment, filter 6 is installed at the top of tree-shaped major structure, and bayonet socket has been opened at 6 four corners of filter.
In this embodiment, the primary frame beam 4 is connected to the middle of the main beam 2 of the tree-shaped main body structure through a second steel sheet 8, a bolt 11 and a nut 12;
secondary frame roof beam 3 passes through third steel sheet 9, bolt 11 and nut 12 and connects 2 upper ends at tree-shaped major structure's girder, even roof beam 5 passes through fourth steel sheet 10, bolt 11 and nut 12 one end and connects at secondary frame roof beam 3 middle parts, even roof beam 5 passes through second steel sheet 8, bolt 11 and nut 12 one end and connects at girder 2 middle parts, forms tree-shaped structural unit. The tree-shaped structure units achieve the effect of expanding and combining a plurality of tree-shaped structure units by changing a third steel sheet 9 for connecting the main beam 2 and the secondary frame beam 3 and a fourth steel sheet 10 for connecting the secondary frame beam 3 and the connecting beam 5.
In this embodiment, the columns 1, the main beams 2, the primary frame beams 4, the secondary frame beams 3, and the coupling beams 5 are wooden members. Wood with excellent properties such as CLT may be selected. All the components are connected in a hidden mode.
Example two
The structure and connection relation of the present application will be described in the following by way of example, and the mounting method of the present application will be described below.
In the installation, the girder bottom is opened has the second notch that holds bolt and first steel sheet, with first steel sheet embedding second notch, through bolt and nut zonulae occludens fixed column and girder, forms singly prop up major structure.
Four sides of the downpipe are welded with downpipe steel sheets, and the downpipe steel sheets are provided with bolt notches. The bolt notch that the pipe steel sheet of falling into the water opened, the column has the middle part of four sides and opens the tenth notch that has the bolt notch counterpoint that has opened with the pipe steel sheet of falling into the water, and it is fixed through the hidden zonulae occludens of bolt and nut, forms the tree-shaped major structure that the filter was installed at the top.
The first-level frame beam is connected to the middle of a main beam of the tree-shaped main body structure through a second steel sheet, a bolt and a nut, the second-level frame beam is connected to the upper end of the main beam of the tree-shaped main body structure through a third steel sheet, the bolt and the nut, the connecting beam is connected to the middle of the second-level frame beam through a fourth steel sheet, the bolt and one end of the nut, and the connecting beam is connected to the middle of the main beam through the second steel sheet, the bolt and one end of the nut to form a tree-shaped structure unit.
The tree structure unit in the example forms the effect of expanding and combining a plurality of tree structure units by changing a third steel sheet connecting the main beam and the secondary frame beam and a fourth steel sheet connecting the secondary frame beam and the connecting beam.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (7)

1. An expandable tree-shaped modular wood structure unit is characterized by comprising columns (1), main beams (2), primary frame beams (4), secondary frame beams (3), connecting beams (5), filter plates (6), first steel sheets (7), second steel sheets (8), third steel sheets (9), fourth steel sheets (10), bolts (11), nuts (12) and downpipes (13);
the top of the column (1) is provided with a first notch (1b) for accommodating a bolt (11) and a first steel sheet (7);
the bottom of the main beam (2) is provided with a second notch (2a) for accommodating a bolt (11) and a first steel sheet (7), the first steel sheet (7) is embedded into the second notch (2a), and the fixing column (1) and the main beam (2) are tightly connected through the bolt (11) and a nut (12) to form a single-support main body structure;
the two ends of the primary frame beam (4) are provided with third notches (4a) for accommodating bolts (11) and second steel sheets (8);
a fourth notch (5a) for accommodating a bolt (11) and a second steel sheet (8) is formed in one end, connected with the first-stage frame beam (4), of the connecting beam (5), and a fifth notch (5b) for accommodating the bolt (11) and the fourth steel sheet (10) is formed in one end, connected with the second-stage frame beam (3), of the connecting beam (5);
the two ends of the secondary frame beam (3) are provided with sixth notches (3a) for accommodating bolts (11) and third steel sheets (9), the middle of the secondary frame beam (3) is provided with seventh notches (3b) for accommodating bolts (11) and fourth steel sheets (10), the upper end of the main beam (2) is provided with eighth notches (2c) for accommodating bolts (11) and third steel sheets (9), and the middle of the main beam (2) is provided with ninth notches (2b) for accommodating bolts (11) and second steel sheets (8);
the downpipe (13) is a hollow square pipe, downpipe steel sheets (13a) are welded on four sides of the downpipe steel sheets (13a), and bolt notches (13aa) are formed in the downpipe steel sheets (13 a).
2. The expandable tree-shaped modular wood construction unit according to claim 1, wherein the downpipe (13) has an outer side length equal to or slightly less than an inner side length of the bottom surface of the column (1).
3. The expandable tree-shaped modular wood structural unit according to claim 1, wherein the post (1) has four sides, and the center of the four sides is formed with a tenth notch (1a) aligned with a bolt notch (13aa) formed on the downpipe steel sheet (13 a).
4. The expandable tree-shaped modular wood structure unit as claimed in claim 3, wherein the downpipe steel (13a) has bolt notches (13aa), and the middle of the column (1) having four sides has tenth notches (1a) aligned with the bolt notches (13aa) on the downpipe steel (13a), the bolt (11) and the nut (12) are tightly connected and fixed in a concealed manner to form a tree-shaped main body structure.
5. The expandable tree-like modular wood structural unit according to claim 3, wherein a filter plate (6) is installed on the top of the tree-like main structure, and bayonets are opened at four corners of the filter plate (6).
6. The expandable tree-shaped modular timber structural unit according to claim 1, wherein the primary frame beams (4) are connected to the middle of the main beams (2) of the tree-shaped main body structure by second steel sheets (8), bolts (11) and nuts (12);
second grade frame roof beam (3) are connected in tree-shaped major structure's girder (2) upper end through third steel sheet (9), bolt (11) and nut (12), even roof beam (5) are connected at second grade frame roof beam (3) middle part through fourth steel sheet (10), bolt (11) and nut (12) one end, even roof beam (5) are connected in girder (2) middle part through second steel sheet (8), bolt (11) and nut (12) one end, form tree-shaped structural unit.
7. The expandable tree-shaped modular wood structural unit according to claim 1, wherein the columns (1), the main beams (2), the primary frame beams (4), the secondary frame beams (3) and the coupling beams (5) are wooden members.
CN202210526811.XA 2022-05-16 2022-05-16 Extensible tree-shaped modular wood structural unit Withdrawn CN114775797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210526811.XA CN114775797A (en) 2022-05-16 2022-05-16 Extensible tree-shaped modular wood structural unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210526811.XA CN114775797A (en) 2022-05-16 2022-05-16 Extensible tree-shaped modular wood structural unit

Publications (1)

Publication Number Publication Date
CN114775797A true CN114775797A (en) 2022-07-22

Family

ID=82436980

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210526811.XA Withdrawn CN114775797A (en) 2022-05-16 2022-05-16 Extensible tree-shaped modular wood structural unit

Country Status (1)

Country Link
CN (1) CN114775797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115787897A (en) * 2022-12-15 2023-03-14 中建八局第三建设有限公司 Connecting component and method of tree-like metal grating curtain wall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115787897A (en) * 2022-12-15 2023-03-14 中建八局第三建设有限公司 Connecting component and method of tree-like metal grating curtain wall
CN115787897B (en) * 2022-12-15 2023-09-22 中建八局第三建设有限公司 Connecting member and method for tree-like metal grid curtain wall

Similar Documents

Publication Publication Date Title
US6276094B1 (en) Light weight pre-engineered prefabricated modular building system
CN102691352B (en) Modular integrated house
US20070151196A1 (en) System, method, and apparatus for frame assembly and building
CN101457552A (en) Composite hollow slab house and building method thereof
CN114775797A (en) Extensible tree-shaped modular wood structural unit
CN206538869U (en) A kind of container sample room
CN205444984U (en) Pin -connected panel sanitation room
CN209891375U (en) Modular assembly type steel structure house
CN102191816B (en) Container type house
CN208063088U (en) Roofing is without support type roof photovoltaic power station
US6318043B1 (en) Shelter and shelter support members
CN110924516A (en) Box-type modular and light steel roof steel structure and manufacturing method
JPH07158164A (en) Wooden building
CN111218980A (en) Polygonal fabricated combined house and construction method thereof
CN211849944U (en) Box modularization and light steel roofing steel construction
CN212026607U (en) Assembled steel structure house that can build additional
CN208001670U (en) A kind of agricultural greenhouse structural member
CN217461616U (en) Assembled log cabin structure based on SI house system
Tabb Greening Architecture: the impact of sustainability
CN211849951U (en) Polygonal assembled combined house
CN213654361U (en) Archaize building structure framework
CN213087542U (en) Combined assembled gallery
Bertolazzi et al. Nested-building as an effective strategy for the reuse of reinforced concrete industrial buildings. The case of the ex-Manifattura Tabacchi factory in Verona (1930-65)
CN111764545B (en) Assembly method of assembly type partition wall keel sectional material
CN218990633U (en) Light steel keel structure for construction site

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20220722