CN114575453B - One-way double mortise and tenon structure of assembled beam column member and construction method - Google Patents
One-way double mortise and tenon structure of assembled beam column member and construction method Download PDFInfo
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- CN114575453B CN114575453B CN202210315231.6A CN202210315231A CN114575453B CN 114575453 B CN114575453 B CN 114575453B CN 202210315231 A CN202210315231 A CN 202210315231A CN 114575453 B CN114575453 B CN 114575453B
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- 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
- E04G21/14—Conveying or assembling building elements
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B2001/5881—Connections for building structures in general of bar-shaped building elements using an undercut groove, e.g. dovetail groove
Abstract
The invention discloses a one-way double mortise and tenon structure of an assembled beam column component and a construction method, comprising a concrete column component, wherein the front direction, the rear direction, the left direction and the right direction of the concrete column component are all connected with one concrete beam component through mortise and tenon structures, each concrete beam component is fastened with the concrete column component through a latch key after mortise and tenon joint, and the latch key is embedded into the mortise and tenon structures to be flush with the surface of the concrete column component and the surface of the concrete beam component. The structure can accelerate the construction of the assembled building, realize the assembly of the beam column on the construction site and zero-wet operation, and ensure the safety of the structure.
Description
Technical Field
The invention relates to the field of concrete beam column connection structures of building structures, in particular to a one-way double mortise and tenon structure of an assembled beam column component and a construction method.
Background
The assembled building has the advantages of saving resources, realizing dry-method on-site assembly, saving water, saving electricity, saving materials, protecting environment and the like, is also a direction of great development and guidance of the government of China, and is a necessary way for realizing green building and double-carbon targets early. When the existing prefabricated concrete structure is constructed, a large amount of post-cast concrete needs to be poured, so that the components cannot be reused when being dismantled, and the construction speed is reduced. In order to improve the construction efficiency and reduce the field wet operation, a concrete structure with the reusable concrete member is manufactured, and a prefabricated concrete member node which does not need the field wet operation and is favorable for dismantling needs to be designed.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a one-way double mortise and tenon structure of an assembled beam column component and a construction method.
The utility model provides a one-way two mortise and tenon structures of assembled beam column component, includes the concrete column component, four directions in front of the concrete column component, back, left and right all are through a mortise and tenon fourth of the twelve earthly branches structure connection concrete beam component, and every concrete beam component is all through latch key fastening after combining with the concrete column component mortise and tenon fourth of the twelve earthly branches structure, with the surface of concrete column component and the surface looks parallel and level of concrete beam component in the latch key embedding mortise and tenon fourth of the twelve earthly branches structure.
Preferably, the waist of the concrete column member is provided with protruding first tenons on four sides thereof; wherein, the first tenons of two opposite sides are positioned in the same horizontal plane, and the first tenons of two adjacent sides are positioned in different horizontal planes; one end of each tenon, which is far away from the concrete column component, is provided with a mortise on the side surface of each tenon.
Preferably, a space-crossing channel is provided in the core of the concrete column member, wherein a first channel running left and right is provided between the front and rear first tenons, a second channel running front and rear is provided between the left and right first tenons, and the first channel and the second channel are arranged vertically to each other in space.
Preferably, the first channel is located above the second channel.
Preferably, the front side and the rear side of the left first tenon and the right first tenon are provided with mortise and tenon structures which are flush with the side surfaces of the concrete column member, the lower part of the mortise and tenon structures is provided with inwards concave mortise and tenon structures, and the left side surface and the right side surface of the front first tenon and the right side surface of the rear first tenon are inwards concave with the side surfaces of the concrete column member.
Preferably, the structures of the four concrete beam members are different from each other, wherein the right side of the left concrete beam member is provided with a second tenon combined with the first passage mortise, the front side and the rear side of the second tenon are provided with first protruding shoulders, the first shoulders are matched with the left shoulders of the concrete column member, the lower side of the left concrete beam member is provided with a first lower mortise matched with the left first tenon, and the first lower mortise is a semi-closed structure with right side and bottom side openings, top sides and left side openings.
Preferably, the front side concrete beam member is provided with the third tenon with second passageway mortise and tenon complex, the both sides of third tenon are provided with first tenon foot, first tenon foot and the mortise foot structure cooperation of concrete column member front side, the upside of front side concrete beam member is provided with the first mortise groove of going up of first tenon complex with the front side, first mortise groove of going up is the semi-enclosed construction that rear side and top side opening, front side and bottom side sealed.
Preferably, the left side of right side concrete beam member is provided with upper and lower penetrating second mortise and tenon fourth of twelve earthly branches, the second tenon runs through behind the first passageway with second mortise and tenon fourth of twelve earthly branches be connected, is provided with convex second mortise in the left end of second mortise and tenon, second mortise and tenon and the mortise and tenon structure cooperation on concrete column member right side.
Preferably, the front side of rear side concrete beam member is provided with upper and lower penetrating third mortise, the third tenon runs through behind the second passageway with third mortise and tenon fourth of twelve earthly branches is connected, is provided with salient second tenon foot at the front end bottom of third mortise, second tenon foot and the mortise foot structure cooperation of concrete column member rear side.
Preferably, mortise openings are formed in the side faces of the second tenon and the third tenon.
Preferably, the mortise openings on all tenons are distributed counterclockwise along the center of the concrete column member in a circumferential manner.
Preferably, the latch key is matched with the mortise to reinforce and connect the concrete beam component and the concrete column component into a whole.
The invention also discloses a construction method of the beam column member unidirectional double mortise-tenon joint, which comprises the following steps:
the first step: and (3) factory preparation: concrete column components, 4 different concrete beam components and tooth clamping keys.
And a second step of: the prefabricated components can be directly assembled after being transported to a construction site, the second tenon of the left concrete beam component passes through the first channel, the first tenon is clamped above the left mortise and tenon structure of the concrete column component, the left first tenon of the concrete column component is connected to the first lower mortise, and the short latch key is inserted into the first lower mortise from bottom to top along the mortise.
And a third step of: the upper parts of second mortise grooves of the right concrete beam members are aligned and connected along second tenons, the second tenons are clamped above the mortise shoulder structures on the right sides of the concrete column members, the first tenons on the right sides of the concrete column members are connected to the lower parts of the second mortise grooves, and long latch keys are inserted into the second mortise grooves along mortise openings.
Fourth step: the third tenon of the front side concrete beam component passes through the second channel, the first tenon foot of the lower part of the front side concrete beam component is clamped with the mortise foot structure of the front side of the concrete column component, the first tenon of the front side of the concrete column component is connected to the first upper mortise, and the short clamping tooth key is inserted into the first upper mortise from top to bottom along the mortise.
Fifth step: the third mortise of the rear side concrete beam member is aligned and connected along the third tenon, the second tenon foot is clamped below the mortise shoulder of the rear side of the concrete column member, the first tenon of the rear side of the concrete column member is connected to the upper portion of the third mortise, and the long latch key is inserted into the third mortise along the mortise.
The beneficial effects of the invention are that
(1) The prefabricated combined column, the combined beam, the clamping tooth key and the like adopted by the invention realize the prefabrication effect of the beam column and other components in a factory, and can be directly assembled and used on a construction site for conveying the prefabricated components. The wet operation work such as post-pouring concrete on a construction site is avoided, the construction strength is reduced, the process of on-site plastering and masonry and the like is omitted, the construction period is shortened, and the purpose of green construction can be better achieved.
(2) The invention discloses a combined column and combined beam connecting structure, which is characterized in that a combined column and combined beam are connected through mortise and tenon joint and a clamping tooth key, and a mortise and tenon joint node between the beams and the columns is mainly used for transmitting loads by extrusion, friction and the like between tenons and mortise openings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the concrete column member of the present invention;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is another angular view of the left side concrete beam component;
in the figure, 1, concrete column component, 2, first tenon, 3, first passageway, 4, second passageway, 5, fourth of twelve earthly branches structure, 6, fourth of twelve earthly branches structure, 7, fourth of twelve earthly branches mouth, 8, second tenon, 9, first tenon, 10, left side concrete beam component, 11, short latch key, 12, third tenon, 13, first tenon, 14, right side concrete beam component, 15, second tenon, 16, long latch key, 18, second tenon, 19, first lower fourth of twelve earthly branches groove, 20, front side concrete beam component, 21, first upper fourth of twelve earthly branches groove, 22, second fourth of twelve earthly branches groove, 23, rear side concrete beam structure, 24, third fourth of twelve earthly branches groove.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
The invention discloses a one-way double mortise and tenon structure of an assembled beam column component as shown in figure 1 and a construction method, wherein the structure comprises a concrete column component 1 which is arranged vertically and positioned at the center, and concrete beam components which are arranged horizontally and positioned on four sides of the concrete column component 1, and the two components are combined into a whole through the mortise and tenon structure.
The concrete column member 1 includes a high-strength concrete reinforcing section in the middle portion and normal concrete sections at the upper and lower ends of the high-strength concrete reinforcing section. Because the reinforcing section is prefabricated in the mill to produce tenon and mortise, and the middle is provided with the passageway that supplies the tenon of concrete beam to pass, in order to guarantee that the beam passes post structure safe and reliable, the interlude adopts high-strength concrete to strengthen. As shown in fig. 2-3, the reinforcing section of the concrete column member is provided with first tenons 2 along the horizontal plane in the four directions of front, rear, left and right, and both side surfaces except the end of the first tenons are provided with mortise openings 7. The first tenons of two opposite sides are provided with channels, the first tenons and the channels are divided into an upper layer and a lower layer, tenons on the front side and the rear side of the concrete column component are located on the upper layer, the channels between the tenons on the upper layer are the first channels 3, the tenons on the left side and the right side are located on the lower layer, the channels between the tenons on the lower layer are the second channels 4, and the two channels are mutually perpendicular. The first channel 3 respectively forms two mortise and tenon structures 5 with the upper surfaces and the side surfaces of the first tenons 2 on the left side and the right side of the lower layer at the left end and the right end, wherein the side surfaces of the mortise and tenon structures are level with the side surfaces of the concrete column member. The second channel 4 forms two mortise structures 6 with the lower surfaces of the first tenons 2 on the left and right sides of the lower layer and the front and rear sides at the front and rear ends respectively, wherein the sides of the mortise are concave in the sides of the concrete column member.
Concrete beam members are divided into four different types of structures, front, rear, left and right. The upper layer of the right end of the left concrete beam member 10 is a first tenon 9, a second tenon 8 protruding rightward is arranged at the front middle part and the rear middle part of the first tenon, mortise openings 7 are formed in two side surfaces except the end parts of the second tenon, the second tenon penetrates through the first channel 3 and then is matched with a second mortise 22 of the right concrete beam member 14, and the second mortise is of an up-down transparent structure. And the second tenon 8 passes through the first channel 3 and then is positioned in the same vertical plane with the first tenon 2 on the right side of the concrete column member, and the first tenon 9 is matched with the mortise and tenon structure 5 on the left side of the concrete column member. The downside of second tenon vertical direction is first mortise 19, and this first mortise is bottom and right side open semi-closed structure, all is provided with mortise 7 in the front and back both sides face of first mortise, as shown in fig. 4. The left first tenon of the concrete column member is embedded into the first mortise and then is correspondingly matched and connected at the mortise of the two sides through the short clamping tooth key 11. The heights of the second tenon 8, the first mortise 19 and the short latch key 11 are half of the total height of the concrete beam member. The short latch key is cuboid, and half of its mortise 7 is at half of tenon at the mortise, and the connection card of its latch key is in tenon and mortise junction.
The left end of right side concrete beam component is penetrating second mortise 22 from top to bottom, sets up convex second mortise 15 in the left end top in second mortise. The second tenon is inserted into the upper portion of the second mortise after penetrating through the first channel, the first tenon on the right side of the concrete column member is inserted into the lower portion of the second mortise, the second tenon 15 is matched with the mortise structure 5 on the right side of the concrete column member, and the long clamping tooth key 16 is inserted into the mortise juncture of the first tenon, the second tenon and the second mortise from top to bottom. The length of the long click key is equal to the height of the right concrete beam member 14.
The lower floor of the rear end of the front side concrete beam member 20 is a first tenon 13, a third tenon 12 protruding backwards is arranged at the left middle part and the right middle part of the first tenon, mortise 7 is arranged on two side surfaces except the end part of the third tenon, the third tenon passes through the second channel 4 and then is matched with a third mortise 24 of the rear side concrete beam member 23, and the third mortise is also of an up-down transparent structure. And the third tenon 12 is positioned in the same vertical plane with the first tenon 2 at the rear side of the concrete column member after passing through the second channel 4, and the first tenon foot 13 is matched with the mortise and tenon structure 5 at the front side of the concrete column member. The upper layer of third tenon vertical direction is first mortise 21 that goes up, and this first mortise is the open semi-closed structure of top and rear side, all is provided with mortise 7 in the left and right both sides face of first mortise that goes up, and first tenon 2 embedding in concrete column member front side is connected after this first mortise 21 that goes up in both sides mortise department corresponds the matching through short card tooth key 11. The heights of the third tenon 12, the first mortise 21 and the short latch key 11 are half of the total height of the concrete beam member. The short latch key is cuboid, and half of its mortise 7 is at half of tenon at the mortise, and the connection card of its latch key is in tenon and mortise junction.
The front end of the rear side concrete beam member is provided with a third mortise 24 which is penetrated up and down, and a second tenon 18 which is protruded is arranged below the front end of the third mortise 24. The third tenon 12 penetrates through the second channel 4 and then is inserted into the lower part of the third mortise 24, the first tenon 2 at the rear side of the concrete column member is inserted into the upper part of the third mortise 24, the second tenon 18 is matched with the mortise structure 6 at the rear side of the concrete column member, and the long clamping tooth key 16 is inserted into the mortise juncture of the third tenon 12, the first tenon 2 and the third mortise 24 from top to bottom. The length of the long clamping tooth key is equal to the height of the right concrete beam component.
The invention also discloses a construction method of the concrete beam column member unidirectional double mortise-tenon joint, which comprises the following steps:
the first step: and (3) factory preparation: concrete column components, 4 different concrete beam components and tooth clamping keys.
And a second step of: the prefabricated components can be directly assembled after being transported to a construction site, the second rabbet 8 of the left concrete beam component 10 passes through the first channel 3, the first rabbet 9 is clamped above the left mortise and tenon structure 5 of the concrete column component 1, the first rabbet 2 on the left of the concrete column component is connected to the first lower mortise 19, and the latch key is inserted into the first lower mortise from bottom to top along the mortise 7.
And a third step of: the upper part of a second mortise 22 of the right concrete beam member 14 is aligned and connected along a second tenon 8, a second tenon 15 is clamped above a mortise shoulder structure 5 on the right side of the concrete column member 1, a first tenon 2 on the right side of the concrete column member is connected to the lower part of the second mortise 22, and a long latch key is inserted into the second mortise 22 along a mortise 7.
Fourth step: the third tenon 12 of the front side concrete beam member 20 passes through the second channel 4, the first tenon 13 at the lower part of the front side concrete beam member 20 is clamped with the mortise structure 6 at the front side of the concrete column member 1, the first tenon 2 at the front side of the concrete column member 1 is connected to the first upper mortise 21, and the short latch key is inserted into the first upper mortise from top to bottom along the mortise 7.
Fifth step: the third mortise 24 of the rear concrete beam member 23 is aligned and connected along the third tenon 12, the second tenon 18 is clamped below the mortise shoulder structure 5 of the rear side of the concrete column member 1, the first tenon 2 of the rear side of the concrete column member is connected to the upper part of the third mortise 24, and the long latch key is inserted into the third mortise along the mortise 7.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The one-way double mortise and tenon structure of the assembled beam column component is characterized by comprising a concrete column component (1), wherein the front direction, the rear direction, the left direction and the right direction of the concrete column component are all connected with one concrete beam component through mortise and tenon structures, each concrete beam component is fastened through a latch key after being mortise and tenon combined with the concrete column component, and the latch key is embedded into the mortise and tenon structures to be flush with the surface of the concrete column component and the surface of the concrete beam component;
the waist of the concrete column component is provided with first protruding tenons (2) on four sides of the waist; wherein, the first tenons of two opposite sides are positioned in the same horizontal plane, and the first tenons of two adjacent sides are positioned in different horizontal planes; one end of each first tenon far away from the concrete column member is provided with a mortise (7) on the side surface of each first tenon;
the core part of the concrete column component is provided with a space-crossing channel, wherein a first channel (3) which runs left and right is arranged between the front and rear first tenons, a second channel (4) which runs front and rear is arranged between the left and right first tenons, and the first channel and the second channel are arranged vertically in space;
the first channel is located above the second channel;
the left and right side surfaces of the left and right first tenons are respectively provided with a mortise and shoulder structure (5) which is flush with the side surface of the concrete column member, and an inwards concave mortise and foot structure (6) is arranged below the mortise and shoulder structure (5), and the left and right side surfaces of the front and right first tenons are inwards concave;
the four concrete beam members are different in structure, wherein the right side of the left concrete beam member (10) is provided with a second tenon (8) which is combined with the tenon-and-mortise joint of the first channel (3), and the second tenon (8) passes through the first channel (3) and is positioned in the same vertical plane with the first tenon (2) on the right side of the concrete column member; the front side and the rear side of the second tenon are provided with first protruding tenons (9), the first tenons are matched with a mortise-shoulder structure on the left side of the concrete column member, the lower side of the left concrete beam member is provided with a first lower mortise (19) matched with the first tenon on the left side, and the first lower mortise is a semi-closed structure with openings on the right side and the bottom side and a seal on the top side and the left side;
the front side concrete beam member (20) is provided with a third tenon (12) matched with the mortise of the second channel, two sides of the third tenon are provided with first tenon feet (13), the first tenon feet are matched with mortise structures on the front side of the concrete column member, the upper side of the front side concrete beam member is provided with a first upper mortise (21) matched with the first tenon on the front side, and the first upper mortise is a semi-closed structure with openings on the rear side and the top side and a seal on the front side and the bottom side;
the left side face of the right concrete beam member (14) is provided with a second mortise (22) penetrating up and down, the second tenon (8) penetrates through the first channel (3) and is connected with the second mortise (22) in a mortise-tenon mode, the left end of the second mortise is provided with a second protruding tenon (15), and the second tenon is matched with a mortise-shoulder structure on the right side of the concrete column member;
the front side of rear side concrete beam member (23) is provided with upper and lower penetrating third mortise (24), third tenon (12) run through behind second passageway (4) with third mortise (24) mortise-tenon joint, be provided with convex second tenon foot (18) at the front end bottom of third mortise, second tenon foot and the mortise foot structure cooperation of concrete column member rear side.
2. The construction method of the one-way double mortise and tenon structure of the assembled beam column member, according to claim 1, comprises the following steps:
the first step: and (3) factory preparation: a concrete column component, 4 different concrete beam components and a tooth clamping key;
and a second step of: the prefabricated components can be directly assembled after being transported to a construction site, the second rabbet (8) of the left concrete beam component (10) passes through the first channel (3), the first rabbet (9) is clamped above the left mortise and tenon structure (5) of the concrete column component (1), the first rabbet (2) of the left concrete column component is connected to the first lower mortise (19), and the short latch key is inserted into the first lower mortise from bottom to top along the mortise (7);
and a third step of: the upper part of a second mortise (22) of the right concrete beam component (14) is aligned and connected along a second tenon (8), a second tenon (15) is clamped above a mortise and shoulder structure (5) on the right side of the concrete column component (1), a first tenon (2) on the right side of the concrete column component is connected to the lower part of the second mortise (22), and a long latch key is inserted into the second mortise along a mortise (7);
fourth step: the third tenon (12) of the front side concrete beam member (20) passes through the second channel (4), the first tenon foot (13) at the lower part of the front side concrete beam member (20) is clamped with the mortise foot structure (6) at the front side of the concrete column member (1), the first tenon head (2) at the front side of the concrete column member (1) is connected to the first upper mortise (21), and the short latch key is inserted into the first upper mortise from top to bottom along the mortise (7);
fifth step: the third mortise (24) of the rear side concrete beam member (23) is aligned and connected along the third tenon (12), the second tenon (18) is clamped below the mortise and shoulder structure (5) of the rear side of the concrete column member (1), the first tenon (2) of the rear side of the concrete column member is connected to the upper portion of the third mortise (24), and the long latch key is inserted into the third mortise along the mortise (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210315231.6A CN114575453B (en) | 2022-03-29 | 2022-03-29 | One-way double mortise and tenon structure of assembled beam column member and construction method |
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| CN202210315231.6A CN114575453B (en) | 2022-03-29 | 2022-03-29 | One-way double mortise and tenon structure of assembled beam column member and construction method |
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| CN114575453A CN114575453A (en) | 2022-06-03 |
| CN114575453B true CN114575453B (en) | 2023-05-09 |
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| CN117211402A (en) * | 2023-07-31 | 2023-12-12 | 南通新华钢结构工程有限公司 | Assembled steel structure and processing method thereof |
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