CN114277929B - Modularized steel structure reverse self-locking column-column connecting node and connecting method - Google Patents
Modularized steel structure reverse self-locking column-column connecting node and connecting method Download PDFInfo
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Abstract
The application relates to a modularized steel structure reverse self-locking column-column connecting node, which comprises an upper module column and a lower module column, wherein an upper locking box is embedded into the end part of the upper module column adjacent to the lower module column, and a lower locking box is embedded into the end part of the lower module column adjacent to the upper module column; the application can realize the self-locking connection or unlocking separation operation of the upper module column and the lower module column by only centering the upper module column on the lower module column under the action of gravity of the upper module column, does not need additional working procedures and operation space, has simple and reliable force transmission and lower dependency on the installation technology of workers.
Description
Technical Field
The application relates to a modularized steel structure reverse self-locking column-column connecting node and a connecting method, and belongs to the field of building structure engineering.
Background
At present, the modularized steel structure connection node forms are various, the connection forms mainly exist in the modes of welding, bolt connection, bolt-welding mixed connection, spring self-locking connection and the like, the existing connection forms are low in field installation efficiency, construction errors are large, most of connection forms need to be additionally reserved with construction space, the construction requirements of the eight-column sixteen-beam internal node of the modularized steel structure cannot be met under the condition that the eight-column sixteen-beam internal node is not additionally provided with an opening, the rigidity of the beam-column node can be weakened through opening installation, and the installation technical requirements of construction workers are high.
Meanwhile, the current construction labor force has a large gap, particularly the technical workers are extremely deficient, and the connection node form depending on the installation technology is not suitable for the development of the current construction industry form. Therefore, the adoption of the connecting node which does not need extra construction space and has small requirements on construction errors (low installation technical dependence) is a direction and key problem of development of the current modularized steel structure connecting node.
Disclosure of Invention
The application provides a modularized steel structure reverse self-locking column-column connecting node and a connecting method, which can complete the installation only by centering an upper module column on a lower module column, do not need extra construction space, and are simple and reliable in force transmission.
The technical scheme adopted for solving the technical problems is as follows:
the modular steel structure reverse self-locking column-column connecting node comprises an upper module column and a lower module column, wherein an upper locking box is embedded in the end part of the upper module column adjacent to the lower module column, a lower locking box is embedded in the end part of the lower module column adjacent to the upper module column, and when the upper module column and the lower module column are installed in a centering way, the upper locking box and the lower locking box are in self-locking connection, so that the upper module column and the lower module column are fixedly connected;
as a further preferable mode of the application, a unidirectional opening plate and a right-angle spring are arranged in the locking box, a part for defining the unidirectional opening plate to realize opening and closing is defined as the surface of the unidirectional opening plate, two hinge plates of the unidirectional opening plate are respectively hinged on the inner wall of the locking box symmetrically through hinge rods, and a gap is reserved between the two hinge plates;
the right angle springs are respectively fixed on the two hinge plates, the right angle stay wire at one end of each right angle spring is welded on the hinge plate, and the right angle stay wire at the other end of each right angle spring is welded on the inner wall of the upper lock box;
as a further preferable mode of the application, an annular fixing plate is arranged on the bottom surface of the unidirectional opening plate in a bonding mode, and the plate wall of the annular fixing plate is welded on the inner wall of the locking box;
as a further preferred aspect of the present application, the lower lock box is internally provided with a support plate, a positioning plate and a shear lock core plate, wherein the end of the support plate adjacent to the upper lock box is defined as the top, the center of the shear lock core plate is fixed at the top of the support plate, the shear lock core plate is vertically arranged with the support plate, and the positioning plate is vertically arranged at a position on the support plate close to the shear lock core plate;
as a further preferred aspect of the present application, the distance between the shear lock core plate and the positioning plate is equal to the sum of the thicknesses of the one-way opening plate and the annular fixing plate;
the gap between the two hinge plates is matched with the thickness of the supporting plate;
as a further preferred aspect of the present application, the surface area of the shear lock core plate is smaller than the area of the cavity in the annular fixing plate, and the surface area of the shear lock core plate is smaller than the area formed when the unidirectional opening and closing plate is closed;
as a further preferred aspect of the present application, the present application further comprises at least one stiffening plate, wherein the at least one stiffening plate is vertically penetrated through the support plate, and the at least one stiffening plate is also vertical to the positioning plate;
as a further preferred aspect of the present application, the locking device further comprises a horizontal connecting member, wherein the locking box extends out of the end of the upper module column adjacent to the lower module column, and when the locking box is connected with the lower locking box in a centered manner, a gap is formed between the locking box and the lower locking box, and the gap is filled by the horizontal connecting member;
the connection method based on any one of the modularized steel structure reverse self-locking column-column connection nodes specifically comprises the following steps:
step S1: the method comprises the steps of pre-preparing an upper lock box and a lower lock box in a factory, embedding the upper lock box into an opening end of an upper module column, embedding the lower lock box into an opening end of a lower module column, and transporting the upper lock box, the lower lock box and a horizontal connecting piece to a construction site;
step S2: connecting the prefabricated lower module column with the lower unit, and centering and installing the horizontal connecting piece with the lower module;
step S3: starting a crane, and installing the end part of the prefabricated upper module column on the locking box to be centered with the lower module column;
step S4: the upper lock box is centered to the lower lock box, the shear lock core plate pushes the hinge plate to open towards the wall of the upper lock box, and the shear lock core plate penetrates through the one-way opening plate;
step S5: continuing to start the crane, fully covering the dead weight of the upper module column on the lower module column, re-closing the hinge plate, tightly attaching the plate surface of the shear lock core plate to the surface of the unidirectional opening and closing plate, and connecting the upper module column with the lower module column;
if the upper module column and the lower module column are required to be separated, starting the crane again to lift the upper module column, re-opening the two hinge plates, and withdrawing the shear lock core plate from the upper lock box to separate the upper module from the lower module column;
as a further preferred aspect of the present application, the floor steel channel beams are welded and fixed to both sides of the upper module column, the ceiling steel channel beams are welded and fixed to both sides of the lower module column, and the flanges of the floor steel channel beams are arranged opposite to the flanges of the ceiling steel channel beams after the upper module column is aligned with the lower module column.
Through the technical scheme, compared with the prior art, the application has the following beneficial effects:
1. the application can realize the self-locking connection or unlocking separation operation of the upper module column and the lower module column by only centering the upper module column and the lower module column under the action of gravity of the upper module column, and has simple construction without additional working procedures and operation space;
2. the application allows certain construction deviation when the upper module column is aligned with the lower module column, and has lower dependency on the installation technology of workers.
Drawings
The application will be further described with reference to the drawings and examples.
Fig. 1 is an overall schematic diagram of an eight-column sixteen-beam (eight-beam visual) connection node provided by the application;
FIG. 2 is an overall schematic diagram of a modular steel structure anti-lock column-column connection node provided by the present application;
FIG. 3 is a schematic side view of a modular steel structure anti-lock column-column connection node provided by the present application;
FIG. 4 is an exploded view of the lock box provided by the present application;
FIG. 5 is an exploded view of the lock down box provided by the present application;
fig. 6 is a schematic view of a right angle spring provided by the present application.
In the figure: 1 is an upper module column, 2 is an upper lock box, 3 is an upper lock cylinder, 4 is a lower lock cylinder, 5 is a lower lock box, 6 is a lower module column, 7 is a right angle spring, 8 is a horizontal connecting piece, 9 is a shear lock core plate, 10 is a positioning plate, 11 is a supporting plate, 12 is a one-way opening plate, 13 is an annular fixing plate, 14 is a stiffening plate, 15 is a right angle stay wire, 17 is a ceiling steel channel beam, and 18 is a floor steel channel beam.
Detailed Description
The application will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present application. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present application.
As described in the background art, the existing modular steel structure connection nodes mainly adopt external connection such as welding and bolts, so that openings are required to be made on the modular steel structure to meet construction requirements.
The application aims to provide a modularized steel structure reverse self-locking column-column connecting joint, which can realize self-locking connection or unlocking separation operation of an upper module column and a lower module column under the action of gravity of the upper module column, does not need extra construction space, and is simple and reliable in force transmission.
Fig. 1 is a schematic view of eight columns and sixteen beams, in which the eight beams on one side of the symmetry are hidden for convenience of description, and the connection between the upper module column 1 and the lower module column 6 is four preferred nodes provided by the present application, and in the specific description, one node is taken as an example.
Fig. 2-3 show that the connecting node is decomposed to obtain two angles, the upper locking box 2 is embedded in the end part of the upper module column adjacent to the lower module column, the lower locking box 5 is embedded in the end part of the lower module column adjacent to the upper module column, and when the upper module column and the lower module column are installed in a centering manner, the upper locking box and the lower locking box are connected in a self-locking manner, so that the upper module column and the lower module column are fixedly connected
For the structure of the locking box, as shown in fig. 4, the locking box is welded and fixed in an upper module column, an upper lock cylinder 3 is arranged in the locking box, the section form of the outer wall of the box is matched with that of the upper module column, and the locking box is welded and fixed in the upper module column; the one-way opening and closing plate 12 and the right-angle spring 7 are arranged in the locking box, the part which defines the one-way opening and closing plate to realize opening and closing is the surface of the one-way opening and closing plate, the two hinge plates of the one-way opening and closing plate are respectively hinged on the inner wall of the locking box in a symmetrical way through hinge rods, and a gap is reserved between the two hinge plates; in order to increase the restoring force of the unidirectional opening plate, namely the unidirectional opening plate can automatically reset when not receiving the thrust effect, the right-angle springs shown in fig. 6 are respectively fixed on the two hinge plates, the right-angle stay wire 15 at one end of the right-angle springs is welded on the hinge plates, and the right-angle stay wire at the other end of the right-angle springs is welded on the inner wall of the locking box. Of course, the structure for realizing the automatic reset of the hinge plate is various, and the right-angle spring is the optimal choice with the lowest cost and the best effect after multiple tests.
The above-mentioned unidirectional opening and closing plate needs unidirectional opening and closing, and its opening and closing direction is fixed, so in order to limit the opening and closing direction of unidirectional opening and closing plate, the bottom surface of unidirectional opening and closing plate is fitted with the annular fixed plate 13, and the plate wall of the annular fixed plate is welded on the inner wall of the upper lock box; in order to ensure rigidity, the hinge plate and the annular fixing plate are made of steel plates.
Next, a specific structure of the lower lock box is described, as shown in fig. 5, the lower lock box is embedded in the lower module column, the lower lock cylinder 4 is installed in the lower lock box, the section form of the outer wall of the box is matched with that of the lower module column, and the lower lock box is welded and fixed in the lower module column; the lower lock box is internally provided with a supporting plate 11, a positioning plate 10 and a shear lock core plate 9, the end part of the supporting plate adjacent to the upper lock box is defined as the top, the center of the shear lock core plate is fixed at the top of the supporting plate, the shear lock core plate and the supporting plate are vertically distributed, and the positioning plate is vertically arranged at the position, close to the shear lock core plate, on the supporting plate.
The shear lock core plate is a key point capable of realizing connection of the upper module column and the lower module column, is embedded into the unidirectional opening plate, enables the bottom surface of the shear lock core plate to be attached to the surface of the unidirectional opening plate, and can realize connection of the upper module column and the lower module column through positioning of the positioning plate, so that in order to ensure tight connection of the upper module column and the lower module column, the distance between the shear lock core plate and the positioning plate is equal to the sum of the thicknesses of the unidirectional opening plate and the annular fixing plate. Meanwhile, when the upper module column is connected with the lower module column, the supporting plate is required to penetrate through the annular fixing plate and the one-way opening plate, so that the gap between the two hinge plates is required to be matched with the thickness of the supporting plate.
The surface area of the shear lock core plate is smaller than the area of the cavity in the annular fixed plate, and meanwhile, the surface area of the shear lock core plate is smaller than the area formed when the unidirectional opening and closing plate is closed; that is, the larger and better the size of the shearing lock core plate is than the smaller the inner diameter of the annular fixed plate, so as to increase the contact area between the shearing lock core plate and the unidirectional opening plate.
Also seen in fig. 5, at least one stiffening plate 14 is provided, which extends perpendicularly through the support plate, while at least one stiffening plate is also perpendicular to the positioning plate; the stiffening plate can be further arranged to strengthen the supporting plate.
In actual operation, in order to meet the connection between the horizontal modules, a horizontal connecting piece 8 is arranged between the upper module column and the lower module column, and in order to ensure that the horizontal connecting piece is optimally matched with each lock box, the upper lock box can extend out of the end parts of the upper module column and the lower module column, which are adjacent, and a gap formed between the upper lock box and the lower lock box is filled by the horizontal connecting piece; meanwhile, the height of the supporting plate is also determined according to the thickness of the horizontal connecting piece, so that the outer vertical face of the frame is smooth.
The upper module column and the lower module column are formed by adopting a closed section mode and are matched with each other, the square steel tube section and the round steel tube section mode can be adopted, and when the square steel tube section is adopted, the right angle of the inner wall is subjected to arc chamfering, so that the follow-up installation is convenient.
Finally, the application provides a connection method of the modularized steel structure reverse self-locking column-column connection node, which specifically comprises the following steps:
step S1: the method comprises the steps of pre-preparing an upper lock box and a lower lock box in a factory, embedding the upper lock box into an opening end of an upper module column, embedding the lower lock box into an opening end of a lower module column, and transporting the upper lock box, the lower lock box and a horizontal connecting piece to a construction site;
step S2: connecting the prefabricated lower module column with the lower unit, and centering and installing the horizontal connecting piece with the lower module;
step S3: starting a crane, and installing the end part of the prefabricated upper module column on the locking box to be centered with the lower module column;
step S4: the upper lock box is centered to the lower lock box, the shear lock core plate pushes the hinge plate to open towards the wall of the upper lock box, and the shear lock core plate penetrates through the one-way opening plate;
step S5: continuing to start the crane, fully covering the dead weight of the upper module column on the lower module column, re-closing the hinge plate, tightly attaching the plate surface of the shear lock core plate to the surface of the unidirectional opening and closing plate, and connecting the upper module column with the lower module column;
if the upper module column and the lower module column are required to be separated, the crane is started again to lift the upper module column, the two hinge plates are opened again, the shear lock core plate is withdrawn from the upper lock box, and the separation of the upper module column and the lower module column can be realized.
The floor steel channel beams 18 are welded and fixed on two sides of the upper module column respectively, the ceiling steel channel beams 17 are welded and fixed on two sides of the lower module column respectively, the floor steel channel beams and the upper module column, and the ceiling steel channel beams and the lower module column can be welded and connected in a factory, and can be transported to the site for bolt connection respectively after the factory prefabrication is completed. After the upper module column and the lower module column are centered, the flanges of the floor steel channel beams and the flanges of the ceiling steel channel beams are oppositely arranged, the floor steel channel beams and the ceiling steel channel beams can be attached and connected in a linkage manner so as to enhance the integrity of the joints, and the floor steel channel beams and the ceiling steel channel beams can leave a certain gap for linkage connection.
In conclusion, the unlocking and self-locking process of the connection disclosed by the application can be completed only by centering the upper module and the lower module by self gravity, and no additional working procedures and operation space are needed. The construction is simple, the stress is clear and reliable, certain construction deviation is allowed, and the dependency on the worker installation technology is low.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present application means that each exists alone or both exist.
"connected" as used herein means either a direct connection between components or an indirect connection between components via other components.
With the above-described preferred embodiments according to the present application as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. The utility model provides a reverse auto-lock post-post connected node of modularization steel construction which characterized in that: the locking device comprises an upper module column (1) and a lower module column (6), wherein an upper locking box (2) is embedded into the end part of the upper module column (1) adjacent to the lower module column (6), a lower locking box (5) is embedded into the end part of the lower module column (6) adjacent to the upper module column (1), and when the upper module column (1) and the lower module column (6) are installed in a centering manner, the upper locking box (2) and the lower locking box (5) are in self-locking connection, so that the upper module column (1) and the lower module column (6) are fixedly connected;
the locking box (2) is internally provided with a one-way opening plate (12) and a right-angle spring (7), a part for defining the one-way opening plate (12) to realize opening and closing is the surface of the one-way opening plate (12), two hinge plates of the one-way opening plate (12) are respectively hinged on the inner wall of the locking box in a symmetrical manner through hinge rods, and a gap is reserved between the two hinge plates;
the two hinge plates are respectively fixed with a right-angle spring (7), a right-angle supporting wire (15) at one end of the right-angle spring (7) is welded on the hinge plates, and the right-angle supporting wire (15) at the other end of the right-angle spring (7) is welded on the inner wall of the upper lock box (2);
install backup pad (11), locating plate (10) and shear lock core board (9) in lower lock box (5), define backup pad (11) and lock box (2) adjacent tip to be the top, the center of shear lock core board (9) is fixed at the top of backup pad (11), and shear lock core board (9) lay perpendicularly with backup pad (11), be close to position perpendicular installation locating plate (10) of shear lock core board (9) on backup pad (11).
2. The modular steel structure reverse self-locking column-column connection node of claim 1, wherein: an annular fixing plate (13) is arranged on the bottom surface of the unidirectional opening plate (12) in a bonding mode, and the plate wall of the annular fixing plate (13) is welded on the inner wall of the locking box (2).
3. The modular steel structure reverse self-locking column-column connection node of claim 1, wherein: the distance between the shear lock core plate (9) and the positioning plate (10) is equal to the sum of the thicknesses of the unidirectional opening plate (12) and the annular fixing plate (13);
the gap between the two hinge plates is matched with the thickness of the supporting plate (11).
4. The modular steel structure reverse self-locking column-column connection node of claim 1, wherein: the surface area of the shear lock core plate (9) is smaller than the area of the inner cavity of the annular fixing plate (13), and meanwhile, the surface area of the shear lock core plate (9) is smaller than the area formed when the unidirectional opening plate (12) is closed.
5. The modular steel structure reverse self-locking column-column connection node of claim 1, wherein: the device further comprises at least one stiffening plate (14), wherein the supporting plate (11) is vertically penetrated by the at least one stiffening plate (14), and the at least one stiffening plate (14) is also vertical to the positioning plate (10).
6. The modular steel structure reverse self-locking column-column connection node of claim 1, wherein: the locking device further comprises a horizontal connecting piece (8), wherein the locking box (2) stretches out of the end part of the upper module column (1) adjacent to the lower module column (6), and when the locking box (2) is connected with the lower locking box (5) in a centering manner, a gap is formed between the locking box (2) and the lower locking box (5), and the gap is filled through the horizontal connecting piece (8).
7. A connection method based on the modular steel structure reverse self-locking column-column connection node according to any one of claims 3 to 6, characterized in that: the method specifically comprises the following steps:
step S1: the method comprises the steps of pre-preparing an upper lock box (2) and a lower lock box (5) in a factory, embedding the upper lock box (2) into the opening end of an upper module column (1), embedding the lower lock box (5) into the opening end of a lower module column (6), and transporting the upper lock box (2), the lower lock box (5) and a horizontal connecting piece (8) to a construction site;
step S2: connecting the prefabricated lower module column (6) with the lower unit, and centering and installing the horizontal connecting piece (8) with the lower module;
step S3: starting a crane, and centering the end part of the prefabricated upper module column (1) provided with the locking box (2) and the lower module column (6);
step S4: the upper lock box (2) is centered to the lower lock box (5), the shear lock core plate (9) pushes the hinge plate to open towards the wall of the upper lock box (2), and the shear lock core plate (9) penetrates through the one-way opening plate (12);
step S5: continuing to start the crane, fully covering the dead weight of the upper module column (1) on the lower module column (6), re-closing the hinge plate, tightly attaching the plate surface of the shear lock core plate (9) to the surface of the unidirectional opening plate (12), and connecting the upper module column (1) with the lower module column (6);
if the upper module column (1) and the lower module column (6) are required to be separated, the crane is started again to lift the upper module column (1), the two hinge plates are opened again, the shear lock core plate (9) is withdrawn from the upper lock box (2), and the separation of the upper module and the lower module column (6) can be realized.
8. The method for connecting the reverse self-locking column-column connecting nodes of the modularized steel structure according to claim 7, wherein the method comprises the following steps: floor steel channel beams (18) are welded and fixed on two sides of the upper module column (1), ceiling steel channel beams (17) are welded and fixed on two sides of the lower module column (6), and flanges of the floor steel channel beams (18) and flanges of the ceiling steel channel beams (17) are oppositely arranged after the upper module column (1) and the lower module column (6) are centered.
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