CN112982662A - Modular steel structure connecting joint adopting grouting technology and construction method thereof - Google Patents
Modular steel structure connecting joint adopting grouting technology and construction method thereof Download PDFInfo
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- CN112982662A CN112982662A CN202110211681.6A CN202110211681A CN112982662A CN 112982662 A CN112982662 A CN 112982662A CN 202110211681 A CN202110211681 A CN 202110211681A CN 112982662 A CN112982662 A CN 112982662A
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- grouting
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 229
- 239000010959 steel Substances 0.000 title claims abstract description 229
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000011440 grout Substances 0.000 claims description 30
- 238000003466 welding Methods 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 238000009417 prefabrication Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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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
- E04B2001/2415—Brackets, gussets, joining plates
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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
- E04B2001/2421—Socket type connectors
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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
- E04B2001/246—Post to post connections
Abstract
The invention provides a modularized steel structure connecting node adopting grouting technology and a construction method thereof, wherein a plurality of through holes for cross-shaped plug-ins to pass through are formed in a positioning ring, an upper steel pipe module column and a lower steel pipe module column are respectively sleeved on the parts, above and below the positioning ring, of the cross-shaped plug-ins, the lower end of the upper steel pipe module column and the upper end of the lower steel pipe module column are sealed with the positioning ring, a sealing bottom plate is arranged below the cross-shaped plug-ins in the lower steel pipe module column, grouting materials are filled in the lower steel pipe module column and the upper steel pipe module column, grouting holes are formed in the lower steel pipe module column, the grouting holes are formed in the upper steel pipe module column, grouting holes are formed in the sealing bottom plate, grouting holes are formed in the upper steel pipe module column, the grouting holes are formed in the upper end of the cross-shaped plug-. The invention has the advantages of good mechanical property, simple structure, convenient construction and high prefabrication rate, and can ensure the reliable connection between steel structure modules.
Description
Technical Field
The invention relates to the technical field of constructional engineering, relates to a connection node structure between a modular steel structure prefabricated cabin and a box type steel structure module, and particularly relates to a modular steel structure connection node adopting a grouting technology and a construction method thereof.
Background
The novel steel structure building has the advantages of high rigidity, light dead weight, short construction period, energy conservation, environmental protection and the like. The node is the core of the steel structure modularization building design, and the reliability of the node directly influences the overall safety of the module. Although scholars at home and abroad have already proposed the nodes related to steel structure box body buildings or container buildings, the existing node forms need larger operation space and longer connection time, and the operation space of the multi-box body combined node is limited. Therefore, the connection node can be installed quickly and has good mechanical properties, and the key points of small operation space, long installation time and weak mechanical properties of the connection node of the modularized steel structure are achieved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a modular steel structure connecting node adopting a grouting technology and a construction method thereof, and the modular steel structure connecting node has the advantages of good mechanical property, simple structure, convenience in construction and high prefabrication rate, and can ensure reliable connection between steel structure modules.
In order to achieve the purpose, the invention adopts the technical scheme that:
a modularized steel structure connecting node adopting grouting technology comprises a cross-shaped plug-in, a positioning ring, a lower steel pipe module column, an upper steel pipe module column and an H-shaped steel module beam, wherein a plurality of through holes for the cross-shaped plug-in to pass through are formed in the positioning ring, the cross-shaped plug-in penetrates through the through holes and is welded with the positioning ring, the upper steel pipe module column is sleeved on the part, above the positioning ring, of the cross-shaped plug-in, the lower steel pipe module column is sleeved on the part, below the positioning ring, of the cross-shaped plug-in, the lower end of the upper steel pipe module column and the upper end of the lower steel pipe module column are sealed with the positioning ring, a sealing bottom plate is arranged below the cross-shaped plug-in the lower steel pipe module column, grouting materials are filled in the lower steel pipe module column and the upper steel pipe module column, grouting holes are, the grout outlet is positioned above the upper end of the cross plug-in, and the lower steel pipe module column and the upper steel pipe module column are both connected with an H-shaped steel module beam.
Preferably, the cross section of the cross-shaped plug-in is cross-shaped, and the edge of the cross-shaped plug-in is arranged along the diagonal direction of the lower steel pipe module column and the upper steel pipe module column or is perpendicular to the corresponding edges of the lower steel pipe module column and the upper steel pipe module column.
Preferably, the holding ring includes location steel ring and gasket, sets up the through hole that supplies the cross plug-in components to pass on the location steel ring, and the location steel ring all sets up the gasket in the both sides of through hole, and the lower extreme of top steel pipe module post and the upper end of below steel pipe module post pass through the gasket is sealed.
Preferably, the edge of the through hole of the positioning steel ring is provided with a positioning boss for positioning the outer side surfaces of the upper steel pipe module column and the lower steel pipe module column.
Preferably, the positioning steel ring and the gasket are connected by gluing.
Preferably, the lower steel pipe module column and the upper steel pipe module column are connected with the H-shaped steel module beam in an equal-strength connection mode through welding.
Preferably, the upper slurry outlet hole of the upper steel pipe module column is positioned 50mm-150mm above the upper end of the cross-shaped plug-in, and the distance between the end part of the lower end of the cross-shaped plug-in and the inner sealing bottom plate of the lower steel pipe module column is 50mm-150 mm.
Preferably, the number of the upper steel pipe module columns is the same as that of the lower steel pipe module columns, and the number of the upper steel pipe module columns is 1-4.
The construction method of the modular steel structure connecting joint adopting the grouting technology comprises the following steps:
after the lower steel pipe module column is installed on site, inserting the lower end of the cross-shaped plug-in piece welded with the positioning ring into the upper end of the lower steel pipe module column, and enabling the lower steel pipe module column to be in sealing contact with the positioning ring;
sleeving the lower end of the upper steel pipe module column at the upper end of the corresponding cross-shaped plug-in unit, wherein the upper steel pipe module column is in sealing contact with the positioning ring;
grouting the grouting material through the grouting hole, stopping grouting when the grouting material flows out of the grout outlet hole, and blocking the grout outlet hole and the grouting hole;
and (5) curing the grouting material, and finishing construction.
Preferably, the surface of the lower steel pipe module column, which is in contact with the grouting material, the surface of the cross-shaped plug-in and the surface of the upper steel pipe module column, which is in contact with the grouting material, are coated with epoxy resin for increasing the connection between the grouting material and the steel plate.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the modular steel structure connecting node adopting the grouting technology, the lower steel pipe module column and the upper steel pipe module column can be conveniently inserted by arranging the cross-shaped plug-in unit, so that rapid assembly is realized; the positioning ring is used as a fixing piece of the cross-shaped plug-in, and also used as a positioning piece of the lower steel pipe module column and the upper steel pipe module column, so that the connecting node structure is stable, and the installation precision is ensured; the cross-shaped plug-in and the positioning ring can be integrally prefabricated, and the lower steel pipe module column and the H-shaped steel module beam and the upper steel pipe module column and the H-shaped steel module beam can be respectively prefabricated later, so that the connecting joint is totally divided into three parts, the prefabrication rate is high, and the installation is convenient. In the connecting node, the grouting materials are filled in the lower steel tube module column and the upper steel tube module column, so that the mechanical property of the connecting node can be improved. In conclusion, the connecting joint has the advantages of good mechanical property, simple structure, convenience in construction and high prefabrication rate, and can ensure reliable connection between steel structure modules.
Drawings
FIG. 1: the invention adopts a three-dimensional structure schematic diagram of a modularized steel structure connecting node in a disassembly state by adopting a grouting technology;
FIG. 2: the invention is a schematic view of a corner post three-dimensional structure;
FIG. 3: the invention is a schematic side column structure;
FIG. 4: the invention is a schematic diagram of a column three-dimensional structure;
FIG. 5: the positioning ring of the invention is in a three-dimensional structure schematic diagram in a disassembled state;
FIG. 6: the invention is a schematic diagram of the exploded state of the top of the lower column;
in the figure, 1 is a cross-shaped plug-in, 2 is a positioning ring, 2-1 is a positioning steel ring, 2-2 is a gasket, 2-3 is a positioning boss, 3 is a grouting hole, 4 is a grout outlet, 5 is a lower steel pipe module column, 6 is an upper steel pipe module column, 7 is a lower H-shaped steel module beam, 8 is an upper H-shaped steel module beam, and 9 is a sealing bottom plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, the modularized steel structure connection node adopting grouting technology of the invention comprises a cross-shaped insert 1, a positioning ring 2, a lower steel pipe module column 5, an upper steel pipe module column 6 and an H-shaped steel module beam, wherein the positioning ring 2 is provided with a plurality of through holes for the cross-shaped insert 1 to pass through, the cross-shaped insert 1 penetrates into the through holes and is welded with the positioning ring 2, the upper steel pipe module column 6 is sleeved on the part of the cross-shaped insert 1 above the positioning ring 2, the lower steel pipe module column 5 is sleeved on the part of the cross-shaped insert 1 below the positioning ring 2, the lower end of the upper steel pipe module column 6 and the upper end of the lower steel pipe module column 5 are sealed with the positioning ring 2, a sealing bottom plate 9 is arranged below the cross-shaped insert 1 in the lower steel pipe module column 5, and grouting materials are filled in the lower steel pipe, be equipped with grout hole 3 on the steel pipe module post 5 of below, grout hole 3 is equipped with grout outlet 4 on the top steel pipe module post 6 in the top of sealing bottom plate 9 top, and grout outlet 4 is located the top of 1 upper ends of cross plug-in components, all is connected with H shaped steel module roof beam on steel pipe module post 5 of below and the top steel pipe module post 6.
Referring to fig. 1, as a preferred embodiment of the present invention, the cross-shaped insert 1 has a cross-shaped cross section, the edges of the cross-shaped insert 1 are arranged along the diagonal direction of the lower steel pipe module column 5 and the upper steel pipe module column 6 (as shown in fig. 1), or are perpendicular to the corresponding edges of the lower steel pipe module column 5 and the upper steel pipe module column 6, and the edges of the cross-shaped insert 1 are located on the symmetry axis of the lower steel pipe module column 5 and the upper steel pipe module column 6.
Referring to fig. 5, a positioning ring 2 comprises a positioning steel ring 2-1 and a gasket 2-2, a through hole for a cross-shaped insert 1 to pass through is formed in the positioning steel ring 2-1, the gasket 2-2 is arranged on each of two sides of the through hole of the positioning steel ring 2-1, and the lower end of an upper steel pipe module column 6 and the upper end of a lower steel pipe module column 5 are sealed through the gaskets 2-2.
Referring to fig. 5, a positioning boss 2-3 for positioning the outer side surfaces of the upper steel pipe module column 6 and the lower steel pipe module column 5 is provided on the edge of the through hole of the positioning steel ring 2-1.
As a preferred embodiment of the invention, the positioning steel ring 2-1 and the gasket 2-2 are connected by gluing.
As a preferred embodiment of the invention, the lower steel pipe module column 5 and the upper steel pipe module column 6 are connected with the H-shaped steel module beam in a welding and other strong connection mode.
As the preferred embodiment of the invention, the slurry outlet 4 on the upper steel pipe module column 6 is positioned 50mm-150mm above the upper end of the cross-shaped plug-in 1, and the distance between the end part of the lower end of the cross-shaped plug-in 1 and the sealing bottom plate 9 in the lower steel pipe module column 5 is 50mm-150 mm.
Referring to fig. 1 to 4, as a preferred embodiment of the present invention, the number of the upper steel pipe modular columns 6 and the lower steel pipe modular columns 5 is the same and opposite, and the number of the upper steel pipe modular columns 6 and the lower steel pipe modular columns 5 is 1 to 4.
The construction method of the modular steel structure connecting joint adopting the grouting technology comprises the following steps:
after the installation of the lower steel pipe module column 5 on site is finished, inserting the lower end of the cross-shaped insert 1 welded with the positioning ring 2 into the upper end of the lower steel pipe module column 5, and enabling the lower steel pipe module column 5 to be in sealing contact with the positioning ring 2;
sleeving the lower end of the upper steel pipe module column 6 at the upper end of the corresponding cross-shaped plug-in 1, and hermetically contacting the upper steel pipe module column 6 with the positioning ring 2;
grouting is carried out through the grouting holes 3, and grouting is stopped when grouting material flows out of the grouting holes 4, and the grouting holes 4 and the grouting holes 3 are blocked;
and (5) curing the grouting material, and finishing construction.
As a preferred embodiment of the present invention, the surface of the lower steel pipe module column 5 contacting the grout, the surface of the cross-shaped insert 1, and the surface of the upper steel pipe module column 6 contacting the grout are coated with epoxy resin to increase the connection shape between the grout and the steel plate.
The reliable connection of the module and the plug-in can be realized through the scheme, the required operation space is small, the node structure is simple, the rapid construction can be realized, and the mechanical property is good.
Examples
Specifically, as shown in fig. 1 to 6, the modular steel structure connection node structure adopting the grouting technology of the invention comprises a cross-shaped plug-in 1, a positioning ring 2, a lower steel pipe module column 5, an upper steel pipe module column 6, a lower H-shaped steel module beam 7 and an upper H-shaped steel module beam 8. An upper steel pipe module column 6 is positioned above a lower steel pipe module column 5, an upper H-shaped steel module beam 8 is positioned above a lower H-shaped steel module beam 7, the lower H-shaped steel module beam 7 is positioned below the upper H-shaped steel module beam 8, gaskets 2-2 are positioned on two sides of a positioning steel ring 2-1, a sealing bottom plate 9 is arranged at the upper end in the lower steel pipe module column 5, the outer wall of the lower end of the upper steel pipe module column 6 is equally and strongly connected with the upper H-shaped steel module beam 8 through welding, the outer wall of the upper end of the lower steel pipe module column 5 is equally and strongly connected with the lower H-shaped steel module beam 7 through welding, the positioning steel ring 2-1 is connected with the gaskets 2-2 through an adhesive, and the positioning ring 2 is connected with; when the lower steel pipe module column 5 is manufactured, the upper end of the lower steel pipe module column 5 is cut open, the lower steel pipe module column 5 is welded into the sealing bottom plate 9 and then is reconnected through welding, the upper space of the sealing bottom plate 9 in the lower steel pipe module column 5 and the inner space of the lower part of the upper steel pipe module column 6 are filled with grouting material, and the liquid level of the grouting material is higher than the top of the cross-shaped plug-in component 1 and is within the range of 50mm-150 mm. It should be noted that, in the factory, the lower steel pipe module column 5 is cut and welded into the sealing bottom plate 9, and then the lower steel pipe module column 5 is welded again. The grouting material is high-strength grouting material, is prepared on site, is poured within half an hour, and ensures the rigid connection between the upright post and the node by utilizing the micro-expansibility of the grouting material. Wherein, the strength of the cross-shaped insert 1 is the same as that of the steel of the main body structure. Wherein, the height of grout material surpasses the top of cross plug-in components 1 to prevent to take place the reliable connection that the corrosion influences the later stage node with the air contact. The number of the upper steel pipe module columns 6 and the number of the lower steel pipe module columns 5 can be 1-4 but the number is equal. Conventional connection means, such as: the bolt connection or the welding connection can only complete simple corner column connection, and although a common pouring connection node can connect a side column and a middle column, the node structure is complex, the industrialized mass production is difficult to realize, and the spot quick installation is realized. The outer contour dimension of the gasket 2-2 is the same as that of the upright column, the width of the gasket 2-2 is twice of the wall thickness of the upright column, and the number of the gaskets 2-2 is the same as that of the upright columns. The gasket can ensure the verticality of the upright column and no gap between the upright column and the positioning steel ring 2-1. The gasket is wider than the column wall to ensure that the grouting material does not overflow. The middle of the positioning steel ring 2-1 is provided with a protrusion (namely a positioning boss 2-3), and the protrusion is used for positioning the position of the upright post. The protruding part can ensure that the node and the upright post are positioned and installed quickly and efficiently during field installation. Referring to fig. 6, a grouting hole 3 with the diameter of 2cm is arranged on the upper part of the sealing bottom plate 9, and a grout outlet 4 with the diameter of 2cm is arranged at the position of the cross-shaped plug-in 1 higher than 50mm-150 mm. Grout hole is at the downside, and the grout outlet is at the upside, can guarantee that the packing of grout material is closely knit, and grout material is higher than cross plug-in components 1, guarantees that cross plug-in components 1 do not take place the corrosion with the air contact. The cross-shaped insert 1 has a cross-sectional dimension smaller than that of the pillar. The cross-shaped insert cross-sectional dimension is smaller than the column cross-sectional dimension to ensure that the cross-shaped insert 1 cannot be inserted into the column due to production errors.
The construction method of the modular steel structure connecting joint adopting the grouting technology comprises the following steps,
s1, welding the sealing bottom plate 9 into the appointed position of the lower steel pipe module column (5) in a factory;
and S2, after the installation of the steel pipe module column 5 below the site is finished, brushing epoxy resin on the inner wall of the steel pipe module column 5 below and the surface of the cross-shaped insert 1, and then inserting the cross-shaped insert 1 welded with the positioning ring 2 into the steel pipe module column 5 below.
S3: after epoxy resin is coated on the surface of the inner wall of the steel pipe module column 6 above the site, the steel pipe module column is sleeved on the corresponding cross-shaped plug-in 1.
S4: grout is filled through the grout hole 3 of lower part, stops the grout and plugs up grout hole 4 and grout hole 3 when upper portion grout hole 4 has grout to flow.
S5: and curing the grouting material.
Through the modular steel structure connecting node adopting the grouting technology and the construction method thereof, a mode that the structure is simple, the construction is convenient, the prefabrication rate is high, the reliable connection between steel structure modules can be guaranteed is provided for the modular steel structure connecting node, the node is simple in structure, the modular steel structure connecting node is suitable for batch production and on-site rapid assembly, lower grouting is adopted, the grouting is compact, good mechanical properties are guaranteed, the required operation space is small, and the splicing of any number of modules can be completed.
Claims (10)
1. A modularized steel structure connecting node adopting grouting technology is characterized by comprising a cross plug-in (1), a positioning ring (2), a lower steel pipe module column (5), an upper steel pipe module column (6) and an H-shaped steel module beam, wherein a plurality of through holes for the cross plug-in (1) to pass are formed in the positioning ring (2), the cross plug-in (1) penetrates into the through holes and is welded with the positioning ring (2), the upper steel pipe module column (6) is sleeved on the part, located above the positioning ring (2), of the cross plug-in (1), the lower steel pipe module column (5) is sleeved on the part, located below the positioning ring (2), of the cross plug-in (1), the lower end of the upper steel pipe module column (6) and the upper end of the lower steel pipe module column (5) are both sealed with the positioning ring (2), a sealing bottom plate (9) is arranged below the cross plug-in the lower steel pipe module column (5), all pack in below steel pipe module post (5) and top steel pipe module post (6) has the grout material, be equipped with grout hole (3) on below steel pipe module post (5), grout hole (3) are in sealing bottom plate (9) top, are equipped with grout outlet (4) on top steel pipe module post (6), and grout outlet (4) are located the top of cross plug-in components (1) upper end, all are connected with H shaped steel module roof beam on below steel pipe module post (5) and the top steel pipe module post (6).
2. A modular steel structure connection node adopting grouting technology as claimed in claim 1, wherein the cross section of the cross-shaped insert (1) is cross-shaped, and the edge of the cross-shaped insert (1) is arranged along the diagonal direction of the lower steel pipe module column (5) and the upper steel pipe module column (6), or is perpendicular to the corresponding edges of the lower steel pipe module column (5) and the upper steel pipe module column (6).
3. The modular steel structure connecting joint adopting the grouting technology as claimed in claim 1, wherein the positioning ring (2) comprises a positioning steel ring (2-1) and a gasket (2-2), a through hole for the cross-shaped plug-in (1) to pass through is formed in the positioning steel ring (2-1), the gasket (2-2) is arranged on each of two sides of the through hole of the positioning steel ring (2-1), and the lower end of the upper steel pipe module column (6) and the upper end of the lower steel pipe module column (5) are sealed through the gasket (2-2).
4. The modular steel structure connecting joint adopting the grouting technology as claimed in claim 3, wherein the positioning steel ring (2-1) is provided with positioning bosses (2-3) at the edges of the through holes for positioning the outer side surfaces of the upper steel pipe module column (6) and the lower steel pipe module column (5).
5. A modular steel structural connection joint adopting grouting technique as claimed in claim 3, characterized in that the positioning steel ring (2-1) and the gasket (2-2) are connected by gluing.
6. The modular steel structure connecting joint adopting the grouting technology as claimed in claim 1, wherein the lower steel pipe module column (5) and the upper steel pipe module column (6) are connected with the H-shaped steel module beam in a welding equal-strength connecting mode.
7. The modular steel structure connecting joint adopting the grouting technology as claimed in claim 1, wherein the grout outlet (4) on the upper steel tube module column (6) is located 50mm-150mm above the upper end of the cross-shaped plug-in (1), and the distance between the end part of the lower end of the cross-shaped plug-in (1) and the sealing bottom plate (9) in the lower steel tube module column (5) is 50mm-150 mm.
8. The modular steel structure connecting node adopting the grouting technology as claimed in claim 1, wherein the number of the upper steel pipe module columns (6) and the number of the lower steel pipe module columns (5) are the same and are opposite, and the number of the upper steel pipe module columns (6) and the number of the lower steel pipe module columns (5) are 1-4.
9. The construction method of a modular steel structure connection node using a grouting technique according to any one of claims 1 to 8, comprising the steps of:
after the lower steel pipe module column (5) is installed on site, inserting the lower end of a cross-shaped plug-in (1) welded with a positioning ring (2) into the upper end of the lower steel pipe module column (5), wherein the lower steel pipe module column (5) is in sealing contact with the positioning ring (2);
sleeving the lower end of the upper steel pipe module column (6) at the upper end of the corresponding cross-shaped plug-in (1), wherein the upper steel pipe module column (6) is in sealing contact with the positioning ring (2);
grouting is carried out through the grouting holes (3), and when grouting flows out of the grouting holes (4), grouting is stopped, and the grouting holes (4) and the grouting holes (3) are blocked;
and (5) curing the grouting material, and finishing construction.
10. The construction method according to claim 9, wherein the surface of the lower steel pipe module column (5) in contact with the grouting material, the surface of the cross-shaped insert (1) and the surface of the upper steel pipe module column (6) in contact with the grouting material are coated with epoxy resin which increases the connection shape between the grouting material and the steel plate.
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Application publication date: 20210618 |