CN113216390A

CN113216390A - Modular steel structure connecting joint adopting inner sleeve grouting connection and mounting method

Info

Publication number: CN113216390A
Application number: CN202110450353.1A
Authority: CN
Inventors: 欧进萍; 杨超
Original assignee: Shenzhen Graduate School Harbin Institute of Technology
Current assignee: Shenzhen Graduate School Harbin Institute of Technology
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-08-06
Anticipated expiration: 2041-04-25
Also published as: CN113216390B

Abstract

The invention provides a modularized steel structure connecting node connected by grouting of inner sleeves, which comprises an upper module column, an upper module beam, a lower module column, a lower module beam and a connecting piece, wherein the connecting piece comprises a horizontal connecting plate and at least two inner sleeves arranged on the surface of the horizontal connecting plate, the inner sleeves are fixed with the horizontal connecting plate, the side surfaces of the inner sleeves are provided with inner studs protruding outwards, the inner walls of the upper module column and the lower module column are provided with outer studs protruding inwards, the upper module column comprises an upper accommodating cavity, the lower module column comprises a lower accommodating cavity, each inner sleeve on the upper part of the connecting piece is respectively arranged in the upper accommodating cavity of each upper module column, each inner sleeve on the lower part of the connecting piece is respectively arranged in the lower accommodating cavity of each lower module column, and grouting materials are arranged between the upper accommodating cavity and the upper part of the connecting piece, the lower accommodating cavities and the lower part of the connecting piece, and the upper part of the upper module column and the lower part of the connecting piece, The lower module column is fixedly connected with the connecting piece. The invention also provides a manufacturing method of the connecting node.

Description

Modular steel structure connecting joint adopting inner sleeve grouting connection and mounting method

Technical Field

The invention belongs to the technical field of construction engineering, and particularly relates to a modular steel structure connecting node adopting inner sleeve grouting connection.

Background

In the existing steel structure or combined structure, the connection between steel components generally adopts bolt connection or welded connection, and the existing connection form needs certain operation space, installation error and longer connection time in the connection process. For the modularized steel structure, a plurality of beam columns, multi-surface walls, floor slabs and other members are arranged at the positions of column nodes, and if the existing connection form is adopted, the operation space is lacked, and the connection can not be realized under the condition of not damaging the surrounding members; and the modular structure is sensitive to connection installation errors, the existing connection form is difficult to realize structure assembly under small installation errors, and the modular structure has good bearing and anti-seismic performance. In order to meet the construction and assembly requirements, a large construction error is reserved, and the effect of load transmission of the node is influenced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a sleeve grouting connecting node between steel structure modules. The construction method can allow large construction and installation errors, and the upper module column and the lower module column can be reliably connected through non-shrinkage grouting material filling in the later period.

The purpose of the invention is realized by the following technical scheme:

the invention provides a modularized steel structure connecting node connected by grouting of inner sleeves, which is used for connecting steel structure modules, and comprises an upper module column, an upper module beam, a lower module column, a lower module beam and a connecting piece, wherein the connecting piece comprises a horizontal connecting plate and at least two inner sleeves arranged on the surface of the horizontal connecting plate, the inner sleeves are fixed with the horizontal connecting plate, the side surfaces of the inner sleeves are provided with inner studs protruding outwards, the inner walls of the upper module column and the lower module column are provided with outer studs protruding inwards, the upper module column comprises an upper accommodating cavity, the lower module column comprises a lower accommodating cavity, each inner sleeve at the upper part of the connecting piece is respectively arranged in the upper accommodating cavity of each upper module column, each inner sleeve at the lower part of the connecting piece is respectively arranged in the lower accommodating cavity of each lower module column, and grouting materials are arranged between the upper accommodating cavity and the upper part of the connecting piece, between the lower accommodating cavity and the lower part of the connecting piece, the grouting material is used for fixedly connecting the upper module column, the lower module column and the connecting piece.

In some embodiments, the plurality of inner pegs are arranged in a plurality of columns on a circumferential side of the inner sleeve, while the plurality of outer pegs are arranged in a plurality of columns within an inner wall of the upper receiving cavity of the upper module column and the lower receiving cavity of the lower module column, wherein the columns of inner pegs are horizontally staggered with respect to the columns of outer pegs.

In some embodiments, the inner peg and each outer peg comprise a circular top plate and a connecting rod fixedly connected to a lower surface of the circular top plate, and the other end of the connecting rod is fixedly connected to the inner sleeve.

In some embodiments, elastic materials are arranged at the bottom end of the outer wall of the upper accommodating cavity and the top end of the outer wall of the lower accommodating cavity, and a closed space is formed between the horizontal connecting plate and the upper accommodating cavity and between the horizontal connecting plate and the lower accommodating cavity.

In some embodiments, four inner sleeves are respectively arranged on the upper side and the lower side of the horizontal connecting plate, four upper module columns are adjacently arranged according to a two-by-two array, two upper module beams are divided into two groups in pairs, the two groups of upper module beams are oppositely arranged on two sides of the four upper module columns, four lower module columns are adjacently arranged according to a two-by-two array, two lower module beams are divided into two groups in pairs, and the two groups of lower module beams are oppositely arranged on two sides of the four lower module columns.

In some embodiments, an avoidance groove is provided at the top end of each lower module column and/or the bottom end of each upper module column, so that the horizontal connecting plate can be received in the avoidance groove after the upper module column and the lower module column are relatively jointed.

In some embodiments, the upper and lower receiving cavities further comprise upper and lower inner partitions, which are respectively located at positions corresponding to the flanges of the upper and lower module beams.

In some embodiments, an upper injection port penetrating to the outside is provided at an axially upper side of a side surface of the upper accommodation chamber, and a lower injection port penetrating to the outside is provided at an axially upper side of a side surface of the lower accommodation chamber.

The invention provides a method for installing the modular steel structure connecting node connected by adopting inner sleeve grouting, which comprises the following steps: s1, vertically arranging the lower module columns of each lower module, wherein the lower accommodating cavities face upwards, arranging 4 lower module columns into a two-by-two array, aligning 4 inner sleeves at the lower part of the connecting piece with 4 lower accommodating cavities respectively, aligning inner bolt nails of the connecting piece with outer bolt nails in the lower accommodating cavities, and further inserting the lower part of the connecting piece into the lower accommodating cavities until the lower surface of a horizontal connecting plate of the connecting piece abuts against the top end of the outer wall of the lower accommodating cavities; s2, pouring grouting material into the fixed space between the lower part of the connecting piece and the lower containing cavity through the lower pouring inlet until the fixed space is filled, and solidifying the grouting material, S3, dividing 4 upper modules into groups and oppositely arranging, wherein the upper containing cavity of each upper module is vertically aligned with an inner sleeve on the upper part of the connecting piece, and then the upper modules and the lower modules are oppositely jointed, so that the upper module beam of each upper module is aligned with the lower module beam of one lower module, S4, pouring grouting material into the fixed space between the upper part of the connecting piece and the upper containing cavity through the upper pouring inlet until the fixed space is filled, and solidifying the grouting material, and completing the connection of the upper modules and the lower modules.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

after the inner sleeve is inserted into the preset position in the module column, the connecting piece is grouted at the reserved grouting opening, so that the connection between steel members can be realized, the decoration of a modular building is not influenced, the reliable connection is realized, larger construction installation errors can be reserved between the module and the inner sleeve, and the load can be transmitted between the inner sleeve and the module column through the filling of grouting material.

Drawings

FIG. 1 is a perspective view of an uninstalled state of a modular steel structure connection node using an inner sleeve grout connection according to an embodiment of the present invention;

FIG. 2 shows a partial enlarged view of portion A of FIG. 1;

FIG. 3 shows a side cross-sectional view of the modular steel structural connection node of FIG. 1 in an uninstalled state using an inner sleeve grout connection;

FIG. 4 shows a side cross-sectional view of the connection node of FIG. 3 in a partially installed state;

FIG. 5 is a side cross-sectional view showing the connection node of FIG. 3 in a fully installed state;

FIG. 6 is a transverse cross-sectional view showing the fully installed state of the connection node in FIG. 3;

fig. 7 is a perspective view illustrating an installation completion state of a modular steel structure connection node connected by inner sleeve grouting according to an embodiment of the present invention;

fig. 8 shows a flow chart of a method of installing a modular steel structural connection node using an inner sleeve grout connection according to an embodiment of the present invention.

Detailed Description

The following detailed description is of the best mode presently contemplated for carrying out the present invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of embodiments of the invention. The scope of the invention is best defined by the appended claims. In certain instances, detailed descriptions of well-known devices and mechanisms are omitted so as not to obscure the description of the present invention with unnecessary detail.

As shown in fig. 1, 3 and 5, the modular steel structure connection node using an inner sleeve grouting connection according to an embodiment of the present invention includes a connection member 10, an upper module 20 and a lower module 30, wherein the upper module 20 further includes an upper module column 22 extending upward in a vertical direction and an upper module beam 21 disposed perpendicular to the upper module column 22. The lower module 30 further includes a lower module column 32 extending downward in a vertical direction and a lower module beam 31 disposed perpendicular to the lower module column 32. Wherein, go up module 20 arrange in the upside of connecting piece 10, including the lower open cuboid form that is last chamber 25 that holds, lower module 30 arrange in the downside of connecting piece 10, including the lower chamber 35 that holds that is upwards open cuboid form, go up module 20 with lower module 30 relatively joins, makes the upper portion of connecting piece 10 insert locate in last chamber 25 holds, the lower part of connecting piece 10 is inserted and is located hold under in the chamber 35, just the upside of connecting piece 10 with hold between the chamber 25 on and the downside of connecting piece 10 with hold under and all have fixed space between the chamber 35, injected into no shrink grout material 9 that excels in the fixed chamber to firmly fix last module 20, connecting piece 10, lower module 30 together.

Referring to fig. 1 and 7, in the present embodiment, 4 upper modules 20 and 4 lower modules 30 are provided and connected to one connecting member 10, wherein the upper module column 22 and the lower module column 32 are made of square steel pipes, the upper module beam 21 and the lower module beam 31 are made of H-shaped steel, and the respective beams of each upper module 20 and each lower module 30 are connected by full penetration butt welds. Wherein the upper receiving cavity 25 is formed at the bottom end of the upper module column 22 and the lower receiving cavity 35 is formed at the top end of the lower module column. The upper portion of the upper receiving cavity 25 includes an upper inner partition 23, the lower portion of the lower receiving cavity 35 includes a lower inner partition 33, and the upper inner partition 23 and the lower inner partition 33 are used to separate the upper receiving cavity 25 from the lower receiving cavity 35 relative to the upper module column 22 and the lower module column 32. Preferably, the positions of the lower inner partition 23 and the lower inner partition 33 correspond to the flanges of the module beam, so that the lower inner partition 23 and the lower inner partition 33 can transmit the pulling pressure of the flanges of the module beam, and a closed space can be formed through the inner partitions to facilitate pouring of grouting materials. Two of the upper modules 20 are arranged in parallel and adjacent to two other upper modules 20 which are also arranged in parallel but have opposite upper module beams 21, so that the upper module columns 22 of the four upper modules 20 are arranged adjacent to each other. Similarly, four of the lower modules 30 are divided into two groups, with four lower module posts 32 also disposed adjacent to each other. It will be appreciated that in other embodiments, other numbers of upper and

lower modules

20, 30 may be provided, and the upper and

lower module beams

21, 31 may be oriented in different directions, for example, two upper modules 20 connected to the upper portion of the connecting member 10 are provided, wherein the two upper module beams 21 are arranged at 90 ° to each other, and similarly, two lower modules 30 are provided to be connected to the connecting member 10, and the two lower module beams 31 of the two lower modules 30 are arranged at 90 ° to each other.

As shown in fig. 2, a connecting member 10 according to an embodiment of the present invention includes a horizontal connecting plate 12, and in this embodiment, the horizontal connecting plate 12 has a substantially square plate shape, and 4 inner sleeves 11 having a square cylindrical shape are fixedly provided on upper and lower surfaces of the horizontal connecting plate by welding or the like. In the present embodiment, the inner sleeve 11 is formed of a square steel pipe. It will be appreciated that in other embodiments not shown, the number of inner sleeves 11 may be adjusted according to the number of upper and

lower modules

20, 30 that are required to be connected at a node. One axial end of each inner sleeve 11 is fixedly connected with the horizontal connecting plate 12 through welding and the like, and the other axial end extends away from the horizontal connecting plate along the direction perpendicular to the horizontal connecting plate. A plurality of outwardly protruding inner pegs 13 are fixedly provided on the circumferential outer side of the inner sleeve 11 by welding or the like. The inner walls of the upper accommodating cavity 25 of the upper module 20 and the lower accommodating cavity 35 of the lower module 30 are provided with outer pegs 34 which protrude inwards. The sum of the width of each direction of the inner sleeve 11 and the length of the inner pin 13 of each corresponding surface is smaller than the width of each direction of the corresponding upper accommodating cavity 25 or lower accommodating cavity 35, and the difference between the width of each direction of the upper accommodating cavity 25 or lower accommodating cavity 35 and the length of the inner pin 13 of each corresponding surface is larger than the width of each direction of the inner sleeve 11, namely, each inner sleeve 11 of the upper part and the lower part of the connecting piece 10 can be inserted into one corresponding upper accommodating cavity 25 or lower accommodating cavity 35 respectively. In this embodiment, the inner pin 13 and the outer pin 34 each include a circular top plate and a connecting rod fixedly connected to the lower surface of the top plate, and the other end of the connecting rod is fixedly connected to the inner sleeve 11. The structure of the inner bolt 13 and the outer bolt 34 is used for forming stable connection with solidified non-shrinkage high-strength grouting material 9 after the non-shrinkage high-strength grouting material 9 is poured, the contact area of the bolt and the solidified grouting material is increased by the circular top plate, and then the fixing effect and the shearing strength of the bolt are improved. It will be understood that the present embodiment shows only one possible choice of the shape of the inner peg 13 and the outer peg 34, and that the inner peg 13 and the outer peg 34 may be provided in other shapes, while ensuring sufficient fixing effect and shear strength. The bottom end of the outer wall of the upper accommodating cavity 25 and the top end of the outer wall of the lower accommodating cavity 35 are preferably provided with viscoelastic materials such as rubber, so that a closed space is formed between the horizontal connecting plate 12 and the upper accommodating cavity 25 and the lower accommodating cavity 35, and grouting materials are prevented from flowing out when grouting is performed after the modules are stacked. After the connection is completed, the horizontal connecting plate 12 separates the upper accommodating cavity 25 from the lower accommodating cavity 35, and the horizontal connecting plate 12 can transmit the pulling and pressing force between the modules. Preferably, each the top of lower module post 32 and/or each the bottom of going up module post 22 sets up dodges the recess, makes go up module post 22 with module post 32 is the back of relatively joining down, horizontal connecting plate 12 can be acceptd in dodging the groove, thereby the order go up module 20 with lower module 30 closely laminates for upper and lower module roof beam zero clearance can transmit the vertical load of going up the module roof beam and reach the purpose of upper and lower module roof beam combined work under vertical load effect, also can play the effect of location to connecting piece 10.

Referring also to fig. 6, preferably, a plurality of the inner pegs 13 are arranged in a plurality of columns on the circumferential side of the inner sleeve 11 in the axial direction of the inner sleeve, while a plurality of the outer pegs 34 are arranged in a plurality of columns in the axial direction of the inner walls of the upper and lower receiving

cavities

25 and 35 in the inner walls of the upper and lower receiving

cavities

25 and 35 of the upper and

lower modules

20 and 30. Wherein the vertical rows of the inner pins 13 and the vertical rows of the outer pins 34 are staggered with each other in the horizontal direction, so that after the connecting member 10 is disposed in the upper and

lower receiving cavities

25 and 35, the vertical rows of the inner pins 13 are inserted between the vertical rows of the outer pins 34, thereby the inner pins 13 and the outer pins 34 are staggered with each other in the horizontal direction. After the non-shrinkage high-strength grouting material 9 is poured, the inner bolt 13 and the outer bolt 34 are relatively fixed through solidified grouting material, and due to the fact that the inner bolt 13 and the outer bolt 34 are arranged in a staggered mode, load distribution among the fixed inner sleeve 11, the upper module 20 and the lower module 30 is more uniform, and the fixing effect is more reliable.

Referring to fig. 3 to 5, an upper inlet 26 penetrating to the outside is provided on an upper side in the axial direction of a side surface of each of the upper receiving chambers 25, and similarly, a lower inlet 36 penetrating to the outside is provided on an upper side in the axial direction of a side surface of each of the lower receiving chambers 35. The upper injection port 26 and the lower injection port 36 are used as injection ports of grouting material 40 during installation, and as shown in fig. 5, the grouting material 40 is filled in fixing spaces between the upper side of the connecting member 10 and the upper receiving cavity 25 and between the lower side of the connecting member 10 and the lower receiving cavity 35, so as to fix the connecting member 10, the upper module 20, and the lower module 30 together. Preferably, the upper injection port 26 and the lower injection port 36 are respectively provided on a plurality of sides of the upper receiving chamber 25 and the lower receiving chamber 35, so that the operation at the time of grouting is more convenient.

The following describes a method for installing a modular steel structure connection node using an inner sleeve grouting connection according to an embodiment of the present invention with reference to the accompanying drawings. Referring to fig. 8, first, in step S1, the lower module column 32 of each lower module 30 is vertically disposed with the lower receiving cavity 35 facing upward, and 4 lower modules 30 are divided into two groups and oppositely arranged (see above). The 4 inner sleeves 11 at the lower part of the connecting piece 10 are respectively aligned with the 4 lower accommodating cavities 35, and the inner pegs 13 of the connecting piece 10 are aligned with the outer pegs 34 in the lower accommodating cavities 35. And then inserting the lower part of the connecting piece 10 into the lower accommodating cavity 35 until the lower surface of the horizontal connecting plate 12 of the connecting piece 10 abuts against the top end of the outer wall of the lower accommodating cavity 35. Then, in step S2, the non-shrink high-strength grouting material 9 is poured into the fixed space between the lower portion of the connecting member 10 and the lower accommodating cavity 35 through the lower pouring port 36 until the fixed space is filled up, and after the non-shrink high-strength grouting material 9 is solidified, the connecting member 10 is connected to the four lower modules 30. In a subsequent step S3, 4 of the upper modules 20 are grouped into 2 groups and arranged in reverse (see above), the upper receiving cavity 25 of each upper module 20 is vertically aligned with one of the inner sleeves 11 of the upper portion of the connecting member 10, respectively, and the upper modules 20 are brought into abutting engagement with the lower modules 30 such that the upper module beams 21 of each upper module 20 are aligned with the lower module beams 31 of one of the lower modules 30. Then, in step S4, a non-shrink high-strength grouting material 9 is poured into the fixing space between the upper portion of the connecting member 10 and the upper accommodating chamber 25 through the upper injection port 26 until the fixing space is filled up, and after the non-shrink high-strength grouting material 9 is solidified, the connecting member 10 is fixedly connected to the upper module 20, so that the upper module 20 and the lower module 30 are connected.

The modular steel structure connecting joint adopting the inner sleeve grouting connection adopts a simple structure to enhance the stability of the connection between steel structures. This kind of connected node makes simply swiftly, need not to reserve great operating space near connecting portion when making the connection, and need not welding operation, and is low to installer's technical requirement, and error tolerance is big to practice thrift the cost, promote building quality, very be fit for using widely in various building application.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.

Claims

1. The modular steel structure connecting joint is characterized by comprising an upper module column, an upper module beam, a lower module column, a lower module beam and a connecting piece, wherein the connecting piece comprises a horizontal connecting plate and at least two inner sleeves arranged on the surface of the horizontal connecting plate, the inner sleeves are fixed with the horizontal connecting plate, inner studs protruding outwards are arranged on the side surfaces of the inner sleeves, outer studs protruding inwards are arranged on the inner walls of the upper module column and the lower module column, the upper module column comprises an upper accommodating cavity, the lower module column comprises a lower accommodating cavity, each inner sleeve on the upper portion of the connecting piece is arranged in the upper accommodating cavity of each upper module column, each inner sleeve on the lower portion of the connecting piece is arranged in the lower accommodating cavity of each lower module column, and grouting materials are arranged between the upper containing cavity and the upper part of the connecting piece and between the lower containing cavity and the lower part of the connecting piece, and the upper module column, the lower module column and the connecting piece are fixedly connected through the grouting materials.

2. The modular steel structural connection node of claim 1, wherein a plurality of the inner pegs are arranged in a plurality of columns on a circumferential side of the inner sleeve, and a plurality of the outer pegs are arranged in a plurality of columns in an inner wall of the upper receiving cavity of the upper module column and the lower receiving cavity of the lower module column, wherein the columns of the inner pegs are horizontally staggered from the columns of the outer pegs.

3. The connecting node of modular steel structures grouted in connection with an inner sleeve according to claim 2, wherein the inner peg and each of the outer pegs comprise a circular top plate and a connecting rod fixedly connected to a lower surface of the circular top plate, and the other end of the connecting rod is fixedly connected to the inner sleeve.

4. The modular steel structure connecting node adopting the inner sleeve grouting connection as claimed in claim 3, wherein an elastic material is arranged at the bottom end of the outer wall of the upper accommodating cavity and the top end of the outer wall of the lower accommodating cavity, and a closed space is formed between the horizontal connecting plate and the upper accommodating cavity and the lower accommodating cavity.

5. The modular steel structure connecting joint adopting inner sleeve grouting connection as claimed in claim 1, wherein four inner sleeves are respectively provided on the upper and lower sides of the horizontal connecting plate, four upper module columns are adjacently arranged in a four-by-four array, four upper module beams are divided into two groups two by two, and two groups of upper module beams are oppositely arranged on both sides of the four upper module columns, four lower module columns are adjacently arranged in a four-by-four array, four lower module beams are divided into two groups two by two, and two groups of lower module beams are oppositely arranged on both sides of the four lower module columns.

6. The modular steel structure connecting node adopting the inner sleeve grouting connection is characterized in that an avoiding groove is formed in the top end of each lower module column and/or the bottom end of each upper module column, so that after the upper module column and the lower module column are jointed in an opposite mode, the horizontal connecting plate can be accommodated in the avoiding groove.

7. The modular steel structure connecting node adopting the inner sleeve grouting connection is characterized in that the upper accommodating cavity and the lower accommodating cavity further comprise an upper inner partition plate and a lower inner partition plate, and the positions of the upper inner partition plate and the lower inner partition plate correspond to the flanges of the upper module beam and the lower module beam respectively.

8. The modular steel structure connecting node adopting the inner sleeve grouting connection is characterized in that an upper injection port which penetrates through the outside is formed in the axial upper side of the side face of the upper accommodating cavity, and a lower injection port which penetrates through the outside is formed in the axial upper side of the side face of the lower accommodating cavity.

9. A method of installing a modular steel structural connection node according to any preceding claim connected using an inner sleeve grout, comprising the steps of:

s1, vertically arranging the lower module columns of each lower module, wherein the lower accommodating cavities face upwards, arranging 4 lower module columns in a four-by-four array, aligning 4 inner sleeves at the lower part of the connecting piece with 4 lower accommodating cavities respectively, aligning inner studs of the connecting piece with outer studs in the lower accommodating cavities, and further inserting the lower part of the connecting piece into the lower accommodating cavities until the lower surface of the horizontal connecting plate of the connecting piece abuts against the top ends of the outer walls of the lower accommodating cavities;

s2, pouring grouting material into the fixed space between the lower part of the connecting piece and the lower containing cavity through the lower pouring inlet until the fixed space is filled up, and solidifying the grouting material,

(S3) grouping and arranging 4 upper modules in an opposite manner, the upper receiving cavity of each upper module being vertically aligned with one of the inner sleeves of the upper portion of the connecting member, respectively, and thereby relatively engaging the upper modules with the lower modules such that the upper module beam of each upper module is aligned with the lower module beam of one of the lower modules,

and S4, pouring the grouting material into the fixed space between the upper part of the connecting piece and the upper accommodating cavity from the upper injection port until the fixed space is filled up, and solidifying the grouting material to complete the connection of the upper module and the lower module.