CN111877569A - Assembled column structure system of steel structure and installation method thereof - Google Patents
Assembled column structure system of steel structure and installation method thereof Download PDFInfo
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- CN111877569A CN111877569A CN202010750027.8A CN202010750027A CN111877569A CN 111877569 A CN111877569 A CN 111877569A CN 202010750027 A CN202010750027 A CN 202010750027A CN 111877569 A CN111877569 A CN 111877569A
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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
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
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Abstract
The invention relates to a steel structure fabricated column structure system, which comprises main columns, distribution columns, steel beams, connecting patch pieces, gusset plates and high-strength bolts, wherein the main columns are fixedly connected with the distribution columns; the main column, the distribution column, the steel beam and the connection patch piece are welded with corresponding gusset plates at corresponding connection positions, the gusset plates are provided with bolt holes, a web plate of the steel beam is connected with the main column through high-strength bolts, the distribution column and the steel beam are connected through end plates through high-strength bolts, the connection patch piece is connected with the main column and the distribution column through high-strength bolts, and the connection patch piece is assembled with the main column or the distribution column according to a structural arrangement form to form a one-shaped or L-shaped or T-shaped or cross-shaped column structure system. The structure system can realize various column shapes according to the structure form, can reduce the size of a single steel column and is in an assembly type, and solves the problem of convex columns caused by overlarge column sections in a residential structure while meeting the vertical and horizontal bearing capacity of the structure, thereby increasing the effective use area of a building; the method is particularly suitable for steel structure houses or office buildings.
Description
Technical Field
The invention relates to the field of construction of assembled steel structures, in particular to an assembled column structure, and specifically relates to an assembled column structure system of a steel structure and an installation method thereof.
Background
Along with the development to steel construction building, present steel construction building design is when satisfying the structure and easily assembling, has all improved main structure spare and nodal connection form such as the roof beam of frame, post, has guaranteed that the structural system satisfies the requirement of bearing capacity, easily assembles, becomes the post simultaneously special-shaped cross section, hides in the wall, satisfies the effect that does not expose the roof beam and does not expose the post, increases the effective usage space of building.
Patent CN200910069037 (indirect assembly type steel pipe concrete combined special-shaped column and manufacturing method thereof) provides a special-shaped steel pipe concrete combined special-shaped column, and a plurality of steel pipe columns are combined and connected together to form a whole, so that the single-limb section of the column is reduced, the column can be hidden in a wall, and the whole column can meet the requirement of bearing capacity. Although the problems of bearing capacity of the column and column exposure are solved, the method has the following defects: 1. the post is a whole, and the transportation degree of difficulty is big, and hoist and mount weight is heavy, needs great lifting means 2 during the installation, does not consider roof beam and post connected node, and the node connection is more complicated for field weld or bolted connection usually.
Disclosure of Invention
The invention aims to overcome the defects and provides an assembled column structure and a system thereof, which have the effects that a steel column is hidden in a wall and does not expose the column, the effective use area is increased, and the components are prefabricated, assembled on site, rapid and efficient.
In order to achieve the above object, the present invention is realized by:
an assembled column structure system of a steel structure comprises main columns, distribution columns, steel beams, connecting and lacing pieces, gusset plates and high-strength bolts; the main column, the distribution column, the steel beam and the connection patch piece are welded with corresponding gusset plates at corresponding connection positions, the gusset plates are provided with bolt holes, a web plate of the steel beam is connected with the main column through high-strength bolts, the distribution column and the steel beam are connected through end plates through high-strength bolts, the connection patch piece is connected with the main column and the distribution column through high-strength bolts, and the connection patch piece is assembled with the main column or the distribution column according to a structural arrangement form to form a one-shaped or L-shaped or T-shaped or cross-shaped column structure system.
The construction method of the distributed steel structure column adopting the fabricated column structure system comprises the following steps:
step 1, prefabrication in a factory:
step 1.1, prefabricating a main column, segmenting the main column according to a field installation scheme, welding a node plate and a stiffening rib at a beam column connecting node position and a node position connected with a patch piece, and forming bolt holes in the node plate;
step 1.2, prefabricating the distributed struts, segmenting the distributed struts according to the layer height, welding a node plate and a stiffening rib at the connecting position of the distributed struts and the patch part, and forming bolt holes on the node plate; end plates are welded at two ends of the distributed strut, and bolt holes are formed in the end plates;
step 1.3, prefabricating a studded piece, welding node plates at two ends of the studded piece, forming bolt holes in the node plates, wherein the bolt holes correspond to the node plate bolt holes in corresponding positions on the main column and the branch column one by one;
step 2, field assembly:
step 2.1, hoisting and temporarily fixing the main column;
2.2, hoisting a lower layer steel beam connected with the main column, wherein the steel beam is hinged with the main column by adopting a high-strength bolt;
2.3, respectively hoisting the lower distributed strut, wherein end plate nodes are adopted between the distributed strut and the upper steel beam and between the distributed strut and the lower steel beam and are connected through high-strength bolts;
step 2.4, hoisting a lower layer of lacing elements, wherein the lacing elements are respectively connected with the main steel column and the distributed struts through high-strength bolts;
step 2.5, hoisting an upper layer of steel beam, wherein the steel beam is hinged with the main column by adopting a high-strength bolt;
step 2.6, hoisting a layer of branch struts, wherein the branch struts are connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
and 2.7, hoisting a layer of lacing elements, wherein the lacing elements are respectively connected with the main steel column and the branch columns through high-strength bolts.
The construction method of the open web truss type distribution column structure adopting the fabricated column structure system comprises the following steps
Step 1, prefabrication in a factory:
step 1.1, prefabricating a main column, segmenting the main column according to a field installation scheme, welding a gusset plate and a stiffening rib at a beam-column connection node position and a node position connected with a patch piece, and forming bolt holes on the gusset plate;
step 1.2, prefabricating a distributed strut, segmenting the distributed strut according to the layer height, welding a node plate and a stiffening rib at the connecting position of a branch strut and a patch member, forming bolt holes on the node plate, welding end plates at two ends of the branch strut, and forming bolt holes on the end plates;
step 1.3, prefabricating a patch, welding node plates at two ends of the patch, and forming bolt holes in the node plates, wherein the bolt holes correspond to the node plate bolt holes in corresponding positions on the main column and the branch column one by one;
step 2, field assembly:
step 2.1, hoisting the main column, and temporarily fixing the main column;
2.2, hoisting a lower layer steel beam connected with the main column, wherein the steel beam and the main column can be hinged and connected by adopting a high-strength bolt;
2.3, respectively hoisting lower-layer branch struts, wherein the branch struts are connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
step 2.4, hoisting a lower layer of lacing element, wherein the lacing element is respectively connected with the main steel column and the branch column through high-strength bolts;
step 2.5, hoisting a layer of steel beam, wherein the steel beam and the main column can be hinged and connected by adopting a high-strength bolt;
step 2.6, respectively hoisting a layer of branch struts, wherein the branch struts are connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
and 2.7, hoisting a layer of lacing elements, wherein the lacing elements are respectively connected with the main steel column and the branch columns through high-strength bolts.
The column structure provided by the invention is composed of a main column and distributed pillars on the periphery; the cross section sizes of the main steel column and the branch columns are smaller than the thickness of the wall body, and the main steel column and the branch columns can be wrapped in the wall body, so that convex angles at indoor corners are avoided; the distance between the main steel column and the branch column can be adjusted, and a small-section steel pipe is adopted to obtain larger bending rigidity; the branch supporting columns can be flexibly arranged, and can form a one-shaped, L-shaped, T-shaped and cross-shaped structure according to the number of the branch supporting columns, so that the application range is wide; the steel beam and the main steel column can be connected by adopting hinged joints, so that the joint connection difficulty is reduced, and the site construction speed is high; the main column and the distributed struts are assembled on site, the components are easy to transport, and the hoisting weight of a single component is small; the prefabricated components in factories are connected by bolts on site, so that the construction speed is high and the precision is high.
Drawings
Fig. 1 is an example of a fabricated steel structural partial two-layer frame.
Fig. 2 is an exploded view of an assembled steel structural distributed column structure.
Fig. 3 is a schematic view of a main column configuration.
FIG. 4 is a schematic view of a distributed strut configuration.
Figure 5 is a schematic view of a patch construction.
Fig. 6 is an example of a partial two-layer frame for an open web truss type distribution column.
Fig. 7 is an exploded view of a structure of a hollow truss type distribution column.
Detailed Description
The invention is further illustrated by the following specific examples.
Example one
As shown in fig. 1-5, a column structure of an assemblable distributed steel structure; the structure comprises a main column 1, distributed struts 4, 5, 10 and 11, steel beams 2, 3, 8 and 9, connecting decoration pieces 6, 7, 12 and 13, node plates 14, 15, 16, 17, 18 and 19 and high-strength bolts.
As shown in fig. 2, the main column, the distribution column, the steel beam, and the lacing-up piece are welded with the node plates at the corresponding connection positions, the node plates are provided with bolt holes, the web of the steel beam is connected with the high-strength bolt of the main column, the distribution column is connected with the steel beam by the end plate through the high-strength bolt, the lacing-up piece is connected with the main column and the distribution column by the high-strength bolt, and the lacing-up piece can be assembled to form a straight-line structure, an L-shaped structure (as shown in fig. 1), a T.
The main column 1 is a rectangular steel pipe column or an H-shaped steel column, the main column is long, and steel beams 2, 3, 8 and 9 are hinged with the main column through bolts in the structure;
the distributed pillars 4, 5, 10 and 11 are H-shaped steel columns, one section of each pillar is arranged on each layer, and the two ends of each pillar are connected with the upper beam and the lower beam through high-strength bolts in a mode of connecting end plates 17;
the patch pieces 6, 7, 12 and 13 can be round tubes, H-shaped steel and angle steel;
the gusset plate is a steel plate connecting plate, one side of the gusset plate is welded on the main columns 14, 15 and 16, the branch columns 17 and 18 and the lacing piece 19, and the gusset plate is provided with bolt holes. The lacing and sticking piece is connected with the main column and the lacing and sticking piece is connected with the branch column through high-strength bolts. The branch struts are connected with the steel beams through high-strength bolts.
The method for installing the column structure comprises the following steps:
(a) prefabrication in a factory:
the main column 1 is prefabricated, the main steel column is segmented according to a field installation scheme, a beam column connecting node position 14 and connecting node positions 15 and 16 of the beam column and the patch piece are welded with a node plate and a stiffening rib, and the node plate is provided with bolt holes.
The distributed type supporting columns are prefabricated 4, 5, 10 and 11, the distributed type supporting columns are segmented according to the layer height, node plates and stiffening ribs are welded at the connecting positions 18 of the branch supporting columns and the patch parts, and bolt holes are formed in the node plates. The two ends of the branch strut are welded with end plates 17, and bolt holes are formed in the end plates.
The patch is prefabricated, node plates 19 are welded at two ends of the patch, bolt holes are formed in the node plates, and the bolt holes correspond to the node plate bolt holes in corresponding positions on the main column and the branch column one by one.
(b) Assembling on site:
firstly, hoisting a main column 1, and temporarily fixing the main column;
hoisting lower layer steel beams 2 and 3 connected with the main column, wherein the steel beams and the main column can be hinged and connected by high-strength bolts;
respectively hoisting lower-layer branch pillars 4 and 5, wherein the branch pillars are connected with the upper and lower steel beams 2 and 3 through high-strength bolts by adopting end plate nodes;
and hoisting lower-layer lacing pieces 6 and 7, wherein the lacing pieces are respectively connected with the main steel column 1 and the branch columns 4 and 5 through high-strength bolts.
Hoisting a layer of steel beams 8 and 9, wherein the steel beams and the main column can be hinged by high-strength bolts;
respectively hoisting upper layers of branch columns 10 and 11, wherein the branch columns are connected with the upper steel beam 2, the lower steel beam 3, the upper steel beam 8 and the lower steel beam 9 through high-strength bolts by adopting end plate nodes;
and hoisting a layer of lacing elements 12 and 13, wherein the lacing elements are respectively connected with the main steel column 1 and the branch columns 10 and 11 through high-strength bolts.
The column structure provided by the invention comprises a main column and distributed struts on the periphery, wherein the main column is long, the distributed struts are arranged one by one, the branch struts are connected with steel beams by end plate bolts, and the branch struts are connected with the main column by high-strength bolts through lacing pieces. The cross section sizes of the main steel column and the branch columns are smaller than the thickness of the wall body, and the main steel column and the branch columns can be wrapped in the wall body, so that convex angles at indoor corners are avoided; the distance between the main steel column and the branch column can be adjusted, and a small-section steel pipe is adopted to obtain larger bending rigidity; the branch supporting columns can be flexibly arranged, and can form a one-shaped, L-shaped, T-shaped and cross-shaped structure according to the number of the branch supporting columns, so that the application range is wide; the steel beam and the main steel column can be connected by adopting hinged joints, so that the joint connection difficulty is reduced, and the site construction speed is high; the main column and the distributed struts are assembled on site, the components are easy to transport, and the hoisting weight of a single component is small; the prefabricated components in factories are connected by bolts on site, so that the construction speed is high and the precision is high.
Example two
As shown in fig. 6 and 7, a hollow truss type distribution column structure; the structure comprises a main column 1, distributed struts 4, 5, 10 and 11, steel beams 2, 3, 8 and 9, connecting decoration pieces 6, 7, 12 and 13, node plates 14, 15, 16, 17 and 18 and high-strength bolts. As shown in fig. 2, the main column, the distribution column, the steel beam, and the lacing-up piece are welded with the gusset plate at the corresponding connection positions, the gusset plate is provided with bolt holes, the web of the steel beam is connected with the high-strength bolt of the main column, the distribution column is connected with the steel beam by the end plate through the high-strength bolt, the lacing-up piece is connected with the main column and the distribution column by the high-strength bolt, and the lacing-up piece can be assembled to form a T-shaped, L-shaped and cross-shaped (as shown in fig. 2.
The main column 1 is a rectangular steel pipe column or an H-shaped steel column, the main column is long, and steel beams 2, 3, 8 and 9 are hinged with the main column through bolts in the structure;
the distributed struts 4, 5, 10 and 11 are H-shaped steel columns, one section of each strut is arranged on each layer, and two ends of each strut are connected with the upper beam and the lower beam through high-strength bolts in a mode of connecting end plates 16;
the patch pieces 6, 7, 12 and 13 can be round tubes, H-shaped steel and angle steel;
the gusset plate is a steel plate connecting plate, one side of the gusset plate is welded on the main columns 14 and 15, the branch columns 16 and 17 and the lacing element 18, and bolt holes are formed in the gusset plate. The lacing and sticking piece is connected with the main column and the lacing and sticking piece is connected with the branch column through high-strength bolts. The branch struts are connected with the steel beams through high-strength bolts.
The mounting method of the assembled distributed steel structure column structure comprises the following steps:
(a) prefabrication in a factory:
the main column 1 is prefabricated, the main steel column is segmented according to a field installation scheme, a beam column connecting node position 14 and connecting node positions 15 and 16 of the beam column and the patch piece are welded with a node plate and a stiffening rib, and the node plate is provided with bolt holes.
The distributed type supporting columns are prefabricated 4, 5, 10 and 11, the distributed type supporting columns are segmented according to the layer height, node plates and stiffening ribs are welded at the connecting positions 17 of the branch supporting columns and the patch parts, and bolt holes are formed in the node plates. End plates 16 are welded at two ends of the branch strut, and bolt holes are formed in the end plates.
The patch is prefabricated, node plates 18 are welded at two ends of the patch, bolt holes are formed in the node plates, and the bolt holes correspond to the node plate bolt holes in corresponding positions on the main column and the branch column one by one.
(b) Assembling on site:
firstly, hoisting a main column 1, and temporarily fixing the main column;
hoisting lower layer steel beams 2 and 3 connected with the main column, wherein the steel beams and the main column can be hinged and connected by high-strength bolts;
respectively hoisting lower-layer branch pillars 4 and 5, wherein the branch pillars are connected with the upper and lower steel beams 2 and 3 through high-strength bolts by adopting end plate nodes;
and hoisting lower-layer lacing pieces 6 and 7, wherein the lacing pieces are respectively connected with the main steel column 1 and the branch columns 4 and 5 through high-strength bolts.
Hoisting a layer of steel beams 8 and 9, wherein the steel beams and the main column can be hinged by high-strength bolts;
respectively hoisting upper layers of branch columns 10 and 11, wherein the branch columns are connected with the upper steel beam 2, the lower steel beam 3, the upper steel beam 8 and the lower steel beam 9 through high-strength bolts by adopting end plate nodes;
and hoisting a layer of lacing elements 12 and 13, wherein the lacing elements are respectively connected with the main steel column 1 and the branch columns 10 and 11 through high-strength bolts.
Claims (3)
1. The utility model provides an assembled column structure system of steel construction, characterized by: the high-strength steel beam column comprises main columns, distribution columns, steel beams, connecting and decorating pieces, gusset plates and high-strength bolts; the main column, the distribution column, the steel beam and the connection patch piece are welded with corresponding gusset plates at corresponding connection positions, the gusset plates are provided with bolt holes, a web plate of the steel beam is connected with the main column through high-strength bolts, the distribution column and the steel beam are connected through end plates through high-strength bolts, the connection patch piece is connected with the main column and the distribution column through high-strength bolts, and the connection patch piece is assembled with the main column or the distribution column according to a structural arrangement form to form a one-shaped or L-shaped or T-shaped or cross-shaped column structure system.
2. A method of constructing a distributed steel structural column using the fabricated column structural system of claim 1, wherein: the method comprises the following steps:
step 1, prefabrication in a factory:
step 1.1, prefabricating a main column, segmenting the main column according to a field installation scheme, welding a node plate and a stiffening rib at a beam column connecting node position and a node position connected with a patch piece, and forming bolt holes in the node plate;
step 1.2, prefabricating the distributed struts, segmenting the distributed struts according to the layer height, welding a node plate and a stiffening rib at the connecting position of the distributed struts and the patch part, and forming bolt holes on the node plate; end plates are welded at two ends of the distributed strut, and bolt holes are formed in the end plates;
step 1.3, prefabricating a studded piece, welding node plates at two ends of the studded piece, forming bolt holes in the node plates, wherein the bolt holes correspond to the node plate bolt holes in corresponding positions on the main column and the branch column one by one;
step 2, field assembly:
step 2.1, hoisting and temporarily fixing the main column;
2.2, hoisting a lower layer steel beam connected with the main column, wherein the steel beam is hinged with the main column by adopting a high-strength bolt;
2.3, respectively hoisting the lower distributed strut, wherein the distributed strut is connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
step 2.4, hoisting a lower layer of lacing elements, wherein the lacing elements are respectively connected with the main steel column and the distributed struts through high-strength bolts;
step 2.5, hoisting an upper layer of steel beam, wherein the steel beam is hinged with the main column by adopting a high-strength bolt;
step 2.6, hoisting a layer of branch struts, wherein the branch struts are connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
and 2.7, hoisting a layer of lacing elements, wherein the lacing elements are respectively connected with the main steel column and the branch columns through high-strength bolts.
3. A method of constructing an open web truss type distribution column structure using the fabricated column structure system of claim 1, wherein: comprises that
Step 1, prefabrication in a factory:
step 1.1, prefabricating a main column, segmenting the main column according to a field installation scheme, welding a gusset plate and a stiffening rib at a beam-column connection node position and a node position connected with a patch piece, and forming bolt holes on the gusset plate;
step 1.2, prefabricating a distributed strut, segmenting the distributed strut according to the layer height, welding a node plate and a stiffening rib at the connecting position of a branch strut and a patch member, forming bolt holes on the node plate, welding end plates at two ends of the branch strut, and forming bolt holes on the end plates;
step 1.3, prefabricating a patch, welding node plates at two ends of the patch, and forming bolt holes in the node plates, wherein the bolt holes correspond to the node plate bolt holes in corresponding positions on the main column and the branch column one by one;
step 2, field assembly:
step 2.1, hoisting the main column, and temporarily fixing the main column;
2.2, hoisting a lower layer steel beam connected with the main column, wherein the steel beam and the main column can be hinged and connected by adopting a high-strength bolt;
2.3, respectively hoisting lower-layer branch struts, wherein the branch struts are connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
step 2.4, hoisting a lower layer of lacing element, wherein the lacing element is respectively connected with the main steel column and the branch column through high-strength bolts;
step 2.5, hoisting a layer of steel beam, wherein the steel beam and the main column can be hinged and connected by adopting a high-strength bolt;
step 2.6, respectively hoisting a layer of branch struts, wherein the branch struts are connected with the upper steel beam and the lower steel beam through high-strength bolts by adopting end plate nodes;
and 2.7, hoisting a layer of lacing elements, wherein the lacing elements are respectively connected with the main steel column and the branch columns through high-strength bolts.
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| CN202010750027.8A CN111877569A (en) | 2020-07-30 | 2020-07-30 | Assembled column structure system of steel structure and installation method thereof |
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| CN202010750027.8A CN111877569A (en) | 2020-07-30 | 2020-07-30 | Assembled column structure system of steel structure and installation method thereof |
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| CN101565969A (en) * | 2009-05-27 | 2009-10-28 | 天津大学 | Indirect assembly concrete-filled steel tube combined special-shaped column and production method thereof |
| CN105604187A (en) * | 2016-01-27 | 2016-05-25 | 北京工业大学 | Beam-column node connecting device for assembled steelwork |
| JP2019065594A (en) * | 2017-10-02 | 2019-04-25 | 新日鐵住金株式会社 | Reinforcement structure of beam-column connection |
| CN208088504U (en) * | 2017-12-26 | 2018-11-13 | 北京建筑大学 | A kind of inner sleeve cartridge type column connected node based on civil engineering |
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Application publication date: 20201103 |