CN216616288U - Modular building node structure connected by cross-shaped steel plates - Google Patents
Modular building node structure connected by cross-shaped steel plates Download PDFInfo
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- CN216616288U CN216616288U CN202123414265.0U CN202123414265U CN216616288U CN 216616288 U CN216616288 U CN 216616288U CN 202123414265 U CN202123414265 U CN 202123414265U CN 216616288 U CN216616288 U CN 216616288U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
A modular building node structure connected by cross steel plates comprises an upper layer module, a lower layer module and a node connecting plate; the number of the lower-layer modules is four, and splicing seams of the four lower-layer modules are in a cross shape; the lower-layer module comprises a lower steel column, a top cross beam, a top longitudinal beam and a top connecting piece; the top of the top connecting piece is provided with a positioning rod; the bottom of the bottom connecting piece is provided with a first positioning hole; the node connecting plate comprises an upper cross plate, a lower cross plate and a horizontal connecting plate; the horizontal connecting plate is positioned at the horizontal joint of the four lower-layer modules and the four upper-layer modules; the upper cross plate is positioned in the cross splicing seams of the four upper-layer modules; the lower cross plate is positioned in the cross splicing seams of the four lower-layer modules; adjacent modules on the same layer are connected through connecting bolts; the utility model solves the technical problems of complex connection mode, inconvenient operation and lower integrity and reliability when the traditional connection mode is used for connecting multiple rows of modular buildings side by side.
Description
Technical Field
The utility model belongs to the technical field of constructional engineering, and particularly relates to a modular building node structure connected by cross-shaped steel plates.
Background
In recent years, due to the shortage of labor force and the requirement of building carbon emission, assembly type buildings are rapidly developed, but a large amount of blanks exist in the field of assembly type modular buildings, the modular buildings have the advantages of high construction speed, environmental protection and the like, the traditional modular buildings are usually used for temporary buildings, a novel node connection mode is needed to ensure the integrity and reliability of nodes when the traditional modular buildings are used for permanent buildings, most of the existing connection modes cannot be used for multi-row parallel connection among the modular buildings, the development of the modular buildings is limited, and therefore a permanent modular building connection node capable of being used for connection among multiple modules needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cross steel plate connected modular building node structure, which aims to solve the technical problems of complex connection mode, inconvenient operation and lower integrity and reliability when the traditional connection mode is used for connecting multiple rows of modular buildings side by side.
In order to achieve the purpose, the utility model adopts the following technical scheme.
A modular building node structure connected by cross steel plates comprises an upper layer module, a lower layer module and a node connecting plate; the number of the lower-layer modules is four, and splicing seams of the four lower-layer modules are in a cross shape; the lower-layer module comprises a lower steel column, a top cross beam, a top longitudinal beam and a top connecting piece; the number of the upper-layer modules is four, and the four upper-layer modules are correspondingly arranged at the tops of the four lower-layer modules; the upper-layer module comprises an upper steel column, a bottom cross beam, a bottom longitudinal beam and a bottom connecting piece; the top connecting piece is L-shaped and comprises a column top connecting block, a top cross beam connecting block and a top longitudinal beam connecting block; the column top connecting block is connected to the top of the lower steel column, a threaded hole is formed in the top of the column top connecting block, and a positioning rod is connected to the threaded hole in a threaded manner; the top cross beam connecting block is connected between the end part of the top cross beam and the longitudinal side surface of one side corresponding to the column top connecting block; first through holes are formed in the transverse side face of the top cross beam connecting block at intervals; the top longitudinal beam connecting block is connected between the end part of the top longitudinal beam and the transverse side surface of one side corresponding to the column top connecting block; second through holes are formed in the longitudinal side face of the top longitudinal beam connecting block at intervals;
the bottom connecting piece is L-shaped and comprises a column bottom connecting block, a bottom cross beam connecting block and a bottom longitudinal beam connecting block; the column bottom connecting block is connected to the bottom of the upper steel column, and a first positioning hole is formed in the bottom of the column bottom connecting block; the bottom cross beam connecting block is connected between the end part of the bottom cross beam and the longitudinal side surface of one side corresponding to the column bottom connecting block; first through holes are formed in the transverse side face of the bottom cross beam connecting block at intervals; the bottom longitudinal beam connecting block is connected between the end part of the bottom longitudinal beam and the transverse side surface of one side corresponding to the column bottom connecting block; second through holes are formed in the longitudinal side face of the bottom longitudinal beam connecting block at intervals;
the node connecting plate comprises an upper cross plate, a lower cross plate and a horizontal connecting plate for connecting the upper cross plate and the lower cross plate; the horizontal connecting plate is positioned at the horizontal joint of the four lower-layer modules and the four upper-layer modules; a second positioning hole is formed in the position, corresponding to the positioning rod, of the horizontal connecting plate; the positioning rod penetrates through the second positioning hole and the first positioning hole; the upper cross plate is positioned in the cross splicing seams of the four upper-layer modules, a third through hole is formed in the position, corresponding to the first through hole, of the upper cross plate, and a fourth through hole is formed in the position, corresponding to the second through hole, of the upper cross plate; the lower cross plate is positioned in the cross splicing seams of the four lower-layer modules, a third through hole is formed in the position, corresponding to the first through hole, of the lower cross plate, and a fourth through hole is formed in the position, corresponding to the second through hole, of the lower cross plate; the longitudinally adjacent upper-layer modules are connected through first connecting bolts penetrating through the first through holes and the third through holes; the transversely adjacent upper-layer modules are connected through second connecting bolts penetrating through the second through holes and the fourth through holes; the longitudinally adjacent lower-layer modules are connected through third connecting bolts penetrating through the first through holes and the third through holes; and the transversely adjacent lower-layer modules are connected through fourth connecting bolts arranged in the second through holes and the fourth through holes in a penetrating manner.
Preferably, the column top connecting block, the top cross beam connecting block and the top longitudinal beam connecting block are integrally formed.
Preferably, the longitudinal section size of the top cross beam connecting block is not smaller than that of the top cross beam; the transverse section size of the top longitudinal beam connecting block is not smaller than that of the top longitudinal beam; the size of the horizontal section of the lower steel column is matched with that of the horizontal section of the column top connecting block.
Preferably, the column bottom connecting block, the bottom cross beam connecting block and the bottom longitudinal beam connecting block are integrally formed.
Preferably, the longitudinal section size of the bottom cross beam connecting block is not smaller than that of the bottom cross beam; the transverse section size of the bottom longitudinal beam connecting block is not smaller than that of the bottom longitudinal beam; the size of the horizontal section of the upper steel column is matched with that of the horizontal section of the column bottom connecting block.
Preferably, the lower cross plate is connected with the horizontal connecting plate in a welding mode; and the upper cross plate is connected with the horizontal connecting plate in a welding manner.
Compared with the prior art, the utility model has the following characteristics and beneficial effects.
1. The symmetrical structure of the node connecting plates in the utility model keeps the node connecting plates unchanged no matter which cross section the beam column adopts, and the connecting modes are uniform.
2. The screw is inserted from the inside of the module, and the first through hole and the second through hole are threaded holes; the first through hole and the second through hole are threaded holes, the connection mode is simple and easy to operate, the problem that connection joints of eight modules are inconvenient to construct is solved, the modular building joint is good in structural integrity, and the reliability of the joint structure is high.
3. The node structure of the utility model is simple and reasonable, the positioning rod is arranged at the top of the top connecting piece, the positioning hole is arranged at the bottom of the bottom connecting piece, and when the upper-layer module is installed, the upper-layer module is positioned simply and the construction is convenient.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is an exploded view of a modular building node structure of the present invention.
Fig. 2 is a schematic structural view of a node connecting plate in the present invention.
Fig. 3 is a schematic view of a vertical cross-section of a modular building node structure according to the present invention.
Fig. 4 is a schematic structural diagram of a node connecting plate arranged on a lower module in the utility model.
Fig. 5 is a schematic view of the structure of the bottom connector of the present invention.
Fig. 6 is a schematic view of the construction of the top connector of the present invention.
Fig. 7 is a schematic structural diagram of the middle-upper module of the present invention. Reference numerals: 1-upper module, 1.1-upper steel column, 1.2-bottom beam, 1.3-bottom longitudinal beam, 1.4-bottom connecting piece, 1.4.1-column bottom connecting block, 1.4.2-bottom beam connecting block, 1.4.3-bottom longitudinal beam connecting block, 2-lower module, 2.1-lower steel column, 2.2-top beam, 2.3-top longitudinal beam, 2.4-top connecting piece, 2.4.1-column top connecting block, 2.4.2-top beam connecting block, 2.4.3-top longitudinal beam connecting block, 3-node connecting plate, 3.1-upper cross plate, 3.2-lower cross plate, 3.3-horizontal connecting plate, 4-first through hole, 5-second through hole, 6-first positioning hole, 7-second positioning hole, 8-first through hole, -second through hole, 10-positioning rod, 11-third through hole, 12-third through hole, 13-fourth through hole, 14-fourth through hole, 15-fourth connecting bolt, 18-connecting bolt, 17-connecting bolt, and 16-17, 19-threaded hole.
Detailed Description
As shown in fig. 1-7, the cross steel plate connected modular building node structure comprises an upper module 1, a lower module 2 and a node connecting plate 3; the number of the lower-layer modules 2 is four, and the splicing seams of the four lower-layer modules 2 are in a cross shape; the lower-layer module 2 comprises a lower steel column 2.1, a top cross beam 2.2, a top longitudinal beam 2.3 and a top connecting piece 2.4; the number of the upper-layer modules 1 is four, and the four upper-layer modules 1 are correspondingly arranged at the tops of the four lower-layer modules 2; the upper-layer module 1 comprises an upper steel column 1.1, a bottom cross beam 1.2, a bottom longitudinal beam 1.3 and a bottom connecting piece 1.4; the top connecting piece 2.4 is L-shaped and comprises a column top connecting block 2.4.1, a top cross beam connecting block 2.4.2 and a top longitudinal beam connecting block 2.4.3; the column top connecting block 2.4.1 is connected to the top of the lower steel column 2.1, a threaded hole 19 is formed in the top of the column top connecting block 2.4.1, and a positioning rod 10 is in threaded connection with the threaded hole 19; the top beam connecting block 2.4.2 is connected between the end part of the top beam 2.2 and the longitudinal side surface of the corresponding side of the column top connecting block 2.4.1; first through holes 4 are arranged on the transverse side surface of the top cross beam connecting block 2.4.2 at intervals; the top longitudinal beam connecting block 2.4.3 is connected between the end part of the top longitudinal beam 2.3 and the transverse side surface of the side corresponding to the column top connecting block 2.4.1; second through holes 5 are arranged on the longitudinal side surface of the top longitudinal beam connecting block 2.4.3 at intervals;
the bottom connecting piece 1.4 is L-shaped and comprises a column bottom connecting block 1.4.1, a bottom cross beam connecting block 1.4.2 and a bottom longitudinal beam connecting block 1.4.3; the column bottom connecting block 1.4.1 is connected to the bottom of the upper steel column 1.1, and a first positioning hole 6 is formed in the bottom of the column bottom connecting block 1.4.1; the bottom cross beam connecting block 1.4.2 is connected between the end part of the bottom cross beam 1.2 and the longitudinal side surface of the corresponding side of the column bottom connecting block 1.4.1; first through holes 8 are arranged on the transverse side of the bottom cross beam connecting block 1.4.2 at intervals; the bottom longitudinal beam connecting block 1.4.3 is connected between the end part of the bottom longitudinal beam 1.3 and the transverse side surface of the side corresponding to the column bottom connecting block 1.4.1; second through holes 9 are arranged on the longitudinal side surface of the bottom longitudinal beam connecting block 1.4.3 at intervals;
the node connecting plate 3 comprises an upper cross plate 3.1, a lower cross plate 3.2 and a horizontal connecting plate 3.3 for connecting the upper cross plate 3.1 and the lower cross plate 3.2; the horizontal connecting plate 3.3 is positioned at the horizontal joint of the four lower-layer modules 2 and the four upper-layer modules 1; a second positioning hole 7 is formed in the position, corresponding to the positioning rod 10, of the horizontal connecting plate 3.3; the positioning rod 10 penetrates through the second positioning hole 7 and the first positioning hole 6; the upper cross plate 3.1 is positioned in the cross splicing seams of the four upper-layer modules 1, a third through hole 11 is formed in the position, corresponding to the first through hole 8, of the upper cross plate 3.1, and a fourth through hole 13 is formed in the position, corresponding to the second through hole 9, of the upper cross plate 3.1; the lower cross plate 3.2 is positioned in the cross splicing seams of the four lower-layer modules 2, a third through hole 12 is formed in the position, corresponding to the first through hole 4, of the lower cross plate 3.2, and a fourth through hole 14 is formed in the position, corresponding to the second through hole 5, of the lower cross plate 3.2; longitudinally adjacent upper-layer modules 1 are connected through first connecting bolts 15 which are arranged in the first through holes 8 and the third through holes 11 in a penetrating manner; the transversely adjacent upper-layer modules 1 are connected through second connecting bolts 16 penetrating through the second through holes 9 and the fourth through holes 13; the longitudinally adjacent lower-layer modules 2 are connected through third connecting bolts 17 which are arranged in the first through holes 4 and the third through holes 12 in a penetrating manner; the transversely adjacent lower-layer modules 2 are connected through fourth connecting bolts 18 which are arranged in the second through holes 5 and the fourth through holes 14 in a penetrating mode.
In this embodiment, the column top connecting block 2.4.1, the top cross beam connecting block 2.4.2 and the top longitudinal beam connecting block 2.4.3 are integrally formed.
In this embodiment, the longitudinal cross-sectional dimension of the top beam connecting block 2.4.2 is not less than the longitudinal cross-sectional dimension of the top beam 2.2; the transverse section size of the top longitudinal beam connecting block 2.4.3 is not smaller than that of the top longitudinal beam 2.3; the horizontal section size of the lower steel column 2.1 is matched with the horizontal section size of the column top connecting block 2.4.1.
In this embodiment, the column bottom connecting block 1.4.1, the bottom cross beam connecting block 1.4.2 and the bottom longitudinal beam connecting block 1.4.3 are integrally formed.
In this embodiment, the longitudinal cross-sectional dimension of the bottom beam connecting block 1.4.2 is not less than the longitudinal cross-sectional dimension of the bottom beam 1.2; the transverse section size of the bottom longitudinal beam connecting block 1.4.3 is not smaller than that of the bottom longitudinal beam 1.3; the horizontal section size of the upper steel column 1.1 is matched with the horizontal section size of the column bottom connecting block 1.4.1.
In the embodiment, the lower cross plate 3.2 is connected with the horizontal connecting plate 3.3 in a welding manner; the upper cross plate 3.1 is connected with the horizontal connecting plate 3.3 in a welding mode.
In this embodiment, the upper steel column 1.1 and the lower steel column 2.1 are made of square steel tubes or C-shaped steel; the bottom cross beam 1.2, the bottom longitudinal beam 1.3, the top cross beam 2.2 and the top longitudinal beam 2.3 are made of square steel tubes or C-shaped steel.
In this embodiment, the side walls of the first through hole 4 and the second through hole 5 are both provided with internal threads; the side walls of the first through hole 8 and the second through hole 9 are provided with internal threads.
In this embodiment, the method for installing the modular building node structure includes the following steps.
Step one, performing factory standardized production on an upper steel column 1.1, a bottom cross beam 1.2, a bottom longitudinal beam 1.3, a bottom connecting piece 1.4, a lower steel column 2.1, a top cross beam 2.2, a top longitudinal beam 2.3, a top connecting piece 2.4 and a node connecting plate 3.
Step two, assembling an upper module 1 and a lower module 2 in a factory: welding a lower steel column 2.1, a top cross beam 2.2 and a top longitudinal beam 2.3 on a top connecting piece 2.4 to form a lower-layer module 2; and welding the upper steel column 1.1, the bottom cross beam 1.2 and the bottom longitudinal beam 1.3 on the bottom connecting piece 1.4 to form an upper-layer module 1, and then installing a wall body and a floor slab to complete the manufacture of the whole box-type house module.
Step three, transporting and hoisting the lower-layer module 2: according to the construction progress requirement, the prefabricated modules are transported to a construction site in batches, and components are hoisted in place according to the design requirement and the house number; firstly hoist four lower floor's modules 2 in proper order, pass the locating lever 10 at 2 tops of lower floor's module through the second locating hole 7 with the horizontal connecting plate 3.3 reservation of node connecting plate 3, control the distance between the module 2 of lower floor, after the location is good, wear to establish the third connecting bolt 17 and the fourth connecting bolt 18 between lower floor's module 2 and lower floor's module 2 from the inside of lower floor's module 2, realize the horizontal connection of node.
Step four, transporting and hoisting the upper module 1: sequentially hoisting the four upper-layer modules 1, and ensuring that the first positioning holes 6 at the bottoms of the upper-layer modules 1 are connected with the positioning rods 10 at the tops of the lower-layer modules 2 during hoisting so as to realize the positioning of the upper-layer modules 1; after the upper module 1 is positioned, the first connecting bolt 15 and the second connecting bolt 16 between the upper module 1 and the upper module 1 are penetrated, so that the horizontal connection of the nodes is realized.
And fifthly, checking all the connecting bolts to ensure the effective connection of the connecting bolts.
Claims (6)
1. A modularized building node structure connected by cross-shaped steel plates comprises an upper-layer module (1), a lower-layer module (2) and a node connecting plate (3); the number of the lower-layer modules (2) is four, and the splicing seams of the four lower-layer modules (2) are in a cross shape; the lower-layer module (2) comprises a lower steel column (2.1), a top cross beam (2.2), a top longitudinal beam (2.3) and a top connecting piece (2.4); the number of the upper-layer modules (1) is four, and the four upper-layer modules (1) are correspondingly arranged at the tops of the four lower-layer modules (2); the upper-layer module (1) comprises an upper steel column (1.1), a bottom cross beam (1.2), a bottom longitudinal beam (1.3) and a bottom connecting piece (1.4); the method is characterized in that: the top connecting piece (2.4) is L-shaped and comprises a column top connecting block (2.4.1), a top cross beam connecting block (2.4.2) and a top longitudinal beam connecting block (2.4.3); the column top connecting block (2.4.1) is connected to the top of the lower steel column (2.1), a threaded hole (19) is formed in the top of the column top connecting block (2.4.1), and a positioning rod (10) is in threaded connection in the threaded hole (19); the top cross beam connecting block (2.4.2) is connected between the end part of the top cross beam (2.2) and the longitudinal side surface of one side corresponding to the column top connecting block (2.4.1); first through holes (4) are arranged on the transverse side surface of the top cross beam connecting block (2.4.2) at intervals; the top longitudinal beam connecting block (2.4.3) is connected between the end part of the top longitudinal beam (2.3) and the transverse side surface of the side corresponding to the column top connecting block (2.4.1); second through holes (5) are arranged on the longitudinal side surface of the top longitudinal beam connecting block (2.4.3) at intervals;
the bottom connecting piece (1.4) is L-shaped and comprises a column bottom connecting block (1.4.1), a bottom cross beam connecting block (1.4.2) and a bottom longitudinal beam connecting block (1.4.3); the column bottom connecting block (1.4.1) is connected to the bottom of the upper steel column (1.1), and a first positioning hole (6) is formed in the bottom of the column bottom connecting block (1.4.1); the bottom cross beam connecting block (1.4.2) is connected between the end part of the bottom cross beam (1.2) and the longitudinal side surface of one side corresponding to the column bottom connecting block (1.4.1); first through holes (8) are arranged on the transverse side of the bottom cross beam connecting block (1.4.2) at intervals; the bottom longitudinal beam connecting block (1.4.3) is connected between the end part of the bottom longitudinal beam (1.3) and the transverse side surface of one side corresponding to the column bottom connecting block (1.4.1); second through holes (9) are formed in the longitudinal side face of the bottom longitudinal beam connecting block (1.4.3) at intervals;
the node connecting plate (3) comprises an upper cross plate (3.1), a lower cross plate (3.2) and a horizontal connecting plate (3.3) for connecting the upper cross plate (3.1) and the lower cross plate (3.2); the horizontal connecting plates (3.3) are positioned at horizontal seams of the four lower-layer modules (2) and the four upper-layer modules (1); a second positioning hole (7) is formed in the position, corresponding to the positioning rod (10), on the horizontal connecting plate (3.3); the positioning rod (10) penetrates through the second positioning hole (7) and the first positioning hole (6); the upper cross plate (3.1) is positioned in the cross splicing seams of the four upper-layer modules (1), a third through hole (11) is formed in the position, corresponding to the first through hole (8), of the upper cross plate (3.1), and a fourth through hole (13) is formed in the position, corresponding to the second through hole (9), of the upper cross plate (3.1); the lower cross plate (3.2) is positioned in the cross splicing seams of the four lower-layer modules (2), a third through hole (12) is formed in the position, corresponding to the first through hole (4), of the lower cross plate (3.2), and a fourth through hole (14) is formed in the position, corresponding to the second through hole (5), of the lower cross plate (3.2); the longitudinally adjacent upper-layer modules (1) are connected through first connecting bolts (15) arranged in the first through holes (8) and the third through holes (11) in a penetrating manner; the transversely adjacent upper-layer modules (1) are connected through second connecting bolts (16) penetrating through the second through holes (9) and the fourth through holes (13); the longitudinally adjacent lower-layer modules (2) are connected through third connecting bolts (17) arranged in the first through holes (4) and the third through holes (12) in a penetrating manner; the transversely adjacent lower-layer modules (2) are connected through fourth connecting bolts (18) arranged in the second through holes (5) and the fourth through holes (14) in a penetrating mode.
2. A cross steel panel connected modular building node structure according to claim 1, wherein: the column top connecting block (2.4.1), the top cross beam connecting block (2.4.2) and the top longitudinal beam connecting block (2.4.3) are integrally formed.
3. A cross steel panel connected modular building node structure according to claim 1, wherein: the longitudinal section size of the top cross beam connecting block (2.4.2) is not smaller than that of the top cross beam (2.2); the transverse section size of the top longitudinal beam connecting block (2.4.3) is not smaller than that of the top longitudinal beam (2.3); the horizontal section size of the lower steel column (2.1) is adapted to the horizontal section size of the column top connecting block (2.4.1).
4. A cross steel panel connected modular building node structure according to claim 1, wherein: the column bottom connecting block (1.4.1), the bottom cross beam connecting block (1.4.2) and the bottom longitudinal beam connecting block (1.4.3) are integrally formed.
5. A cross steel panel connected modular building node structure according to claim 1, wherein: the longitudinal section size of the bottom cross beam connecting block (1.4.2) is not smaller than that of the bottom cross beam (1.2); the transverse section size of the bottom longitudinal beam connecting block (1.4.3) is not smaller than that of the bottom longitudinal beam (1.3); the horizontal section size of the upper steel column (1.1) is adapted to the horizontal section size of the column bottom connecting block (1.4.1).
6. A cross steel panel connected modular building node structure according to claim 1, wherein: the lower cross plate (3.2) is connected with the horizontal connecting plate (3.3) in a welding manner; the upper cross plate (3.1) is connected with the horizontal connecting plate (3.3) in a welding manner.
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| CN202123414265.0U CN216616288U (en) | 2021-12-31 | 2021-12-31 | Modular building node structure connected by cross-shaped steel plates |
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| CN202123414265.0U CN216616288U (en) | 2021-12-31 | 2021-12-31 | Modular building node structure connected by cross-shaped steel plates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262758A (en) * | 2022-07-13 | 2022-11-01 | 天津大学 | Full bolt horizontal connection node of steel frame column between module units |
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2021
- 2021-12-31 CN CN202123414265.0U patent/CN216616288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262758A (en) * | 2022-07-13 | 2022-11-01 | 天津大学 | Full bolt horizontal connection node of steel frame column between module units |
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