CN114837301B

CN114837301B - Stepped steel plate-based node structure and construction method

Info

Publication number: CN114837301B
Application number: CN202210597738.5A
Authority: CN
Inventors: 曾庆斌; 许东坡; 胡振程; 蒋国平; 郭金龙; 吴建国
Original assignee: Fujian Jiaojian Group Engineering Co ltd
Current assignee: Fujian Jiaojian Group Engineering Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-08-04
Anticipated expiration: 2042-05-30
Also published as: CN114837301A

Abstract

A stepped steel slab-based node structure comprising: the beam column, the bottom plate, the first step block and the second step block; the first step block is connected with the side wall of the beam column, and the first step block and the second step block are matched in place and then connected with the upper end surface of the bottom plate; the node structure further comprises a locking plate and a clamping and locking device; the locking plates are arranged on two sides of the first step block and the second step block; one end of the locking plate matched with the first step block and the second step block is provided with a plurality of wedge block structures, the butt joint parts of the first step block and the second step block are in a step shape, and a plurality of clamping accommodating cavities matched with the wedge block structures are formed together after the locking plate is matched in place; the clamping lock device is arranged between the lock plates at two sides so as to lock the lock plates at two sides.

Description

Stepped steel plate-based node structure and construction method

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a stepped steel plate-type based node structure and a construction method.

Background

With the massive aggregation of modern urban population and the economic high-speed development; the steel structure has the advantages of light dead weight, high strength, good earthquake resistance, large usable space of the building, environmental protection, good comprehensive economic index and the like; is one of the common structural forms of building structures, especially multi-story high-rise building structures. The connection design method of the beam-column nodes plays a very important key role for the safety of the building, the beam-column nodes are stress nodes of the beam-beam intersection and stress nodes of the beam-column connection, and the nodes are stress hinges in the steel frame structure and force transmission hinges in the steel frame structure.

The beam column node is the key point of the success and failure of the steel frame structural engineering design. The steel structure frame beam column node can adopt the following connection modes:

a rigid connection, which allows the highest strength and rigidity to be obtained;

a hinged connection in such a way that maximum flexibility is obtained;

semi-rigid connection, the rigidity and flexibility obtained by this connection are between the two. In the actual construction process, the semi-rigid connection mode is adopted to greatly accelerate the construction process, welding operation is omitted in the construction process, and the hinged connection mode also improves the standardized process of the components.

The three connection modes have the characteristics, but the connection modes are finally classified into connection methods such as bolt locking, welding, screw welding and mixing.

However, there are cases where accidents occur such as bolt breakage at the joint, connector breakage, etc. of the bolt connection; the fatigue is sensitive during the whole welding connection, the problem of low-temperature cold brittleness of the welded structure is more prominent, and welding residual stress and deformation are generated, so that the structural work is adversely affected.

Therefore, the structure and the construction process of the node need to be optimized, the stability of the node connection and the conduction of force can be maintained, the bolt connection and the welding are reduced as much as possible, and the bolt connection and the welding are used as further strengthening rather than main fastening means, so that the protection of the structural workpiece of the node is a very important problem.

Disclosure of Invention

The invention provides a joint structure based on a stepped steel plate and a construction method, and adopts a connection method similar to welding fusion of a clamping tenon structure and a bolt. Even if the bolt and the welding process are problematic, the tenon structure still firmly connects the beam and the column together, so that the technical problems can be solved.

In one aspect of the present disclosure, a stepped steel plate-based node structure is disclosed, comprising:

the beam column, the bottom plate, the first step block and the second step block;

the first step block is connected with the side wall of the beam column, and the first step block and the second step block are matched in place and then connected to the upper end surface of the bottom plate;

the node structure further comprises a locking plate and a clamping and locking device;

the locking plates are arranged on two sides of the first step block and the second step block;

one end of the locking plate, which is matched with the first step block and the second step block, is provided with a plurality of wedge block structures, the butt joint parts of the first step block and the second step block are in a step shape, and a plurality of clamping accommodating cavities matched with the wedge block structures are formed together after the locking plate is matched in place;

the clamping and locking device is arranged between the locking plates at two sides so as to lock the locking plates at two sides.

Further, the clamping and locking device comprises a first clamping block, a second clamping block and a gear;

the first clamping block and the second clamping block are respectively connected with the lock plates at two sides;

the first clamping block and the second clamping block are respectively provided with a rack part,

the first clamping blocks and the second clamping blocks are oppositely arranged, and the gear is arranged between the two opposite rack parts.

Further, the end part of the second clamping block is provided with a reverse hook part;

the first clamping block is internally provided with a lock hook, an elastic piece and an unlocking block;

one end of the lock hook is rotatably connected with the inside of the first clamping block;

the unlocking block is rotatably connected with the inside of the first clamping block;

the other end of the lock hook is matched with the unlocking block;

the side part of the lock hook is provided with a clamping hook;

the clamping hook is matched with the inverted hook part;

the elastic piece is matched with the middle part of the lock hook.

Further, the butt joint of the first step block and the second step block comprises a first step surface, a second step surface and a third step surface which are consecutive;

the first tread, the second tread, the third tread are all provided with the clamping containing cavity

The second ladder surface is inclined.

Further, two ends of the wedge block structure are provided with clamping parts, wherein the clamping parts at one end are matched with the first step blocks, and the clamping parts at the other end are matched with the second step blocks.

Further, a clamping plate is arranged at the outer side part of the lock plate;

the clamping plate end part is connected with the first clamping block and the second clamping block;

the side of the clamping plate is connected with the clamping plate.

Further, a first knob and a second knob are arranged at the top of the clamping lock device;

the first knob is connected with the gear in an adaptive manner;

the second knob is connected with the unlocking block in an adapting mode.

In another aspect of the disclosure, a construction method of a stepped steel slab-based node structure is disclosed, comprising the steps of:

connecting the bottom plate to the beam column at the position where the node is required to be arranged;

the first step block is arranged on the bottom plate and is connected with the beam column;

the second step block is in butt joint with the first step block, so that each clamping accommodating cavity is accurately corresponding to the corresponding clamping accommodating cavity;

correspondingly placing the lock plates on two sides, and enabling the wedge block structure to correspond to the clamping accommodating cavity;

clamping the lock plates at two sides to the middle through a clamping and locking device, and inserting each wedge block structure into a corresponding clamping accommodating cavity;

the lock plate is locked on two sides through the clamping and locking device, so that the lock plate is prevented from being separated from the first step block and the second step block.

The beneficial effects of the invention are as follows:

through setting up echelonment first ladder piece, second ladder piece in node department, the two butt joint face is the echelonment of coherence and adaptation, after the butt joint, both coincide each other, and a plurality of ladder faces that the butt joint face formed all have joint appearance chamber, first ladder piece, second ladder piece all have a part in joint appearance chamber, after the butt joint is put in place, form complete gentle anastomotic joint appearance chamber, the jam plate makes first ladder piece, the stable chucking of second ladder piece through inserting the voussoir structure in joint appearance chamber in both sides, the jam plate of both sides can open and lock the regulation through pressing from both sides the locking device, make jam plate and pressing from both sides the locking device form whole to lock and be convenient for adjust first ladder piece, second ladder piece, when dismantling the node, only need open the locking plate through pressing from both sides the locking device, the difficult operation of too much bolt assembly dismantlement together can be taken down.

Drawings

FIG. 1 is a schematic diagram of a node structure;

FIG. 2 is an exploded schematic view of a node structure;

FIG. 3 is a schematic view of the internal structure of the clip lock device from a top view;

FIG. 4 is a schematic diagram of the cooperation of the first step block and the second step block;

FIG. 5 is a schematic diagram showing the cooperation of the first step block and the second step block in another embodiment;

fig. 6 is a schematic diagram of the cooperation of the first step block and the second step block in another embodiment.

1. A beam column; 2. a bottom plate; 3. a first step block; 4. a second step block; 5. a lock plate; 6. a clamping and locking device; 7. the clamping accommodating cavity; 8. a wedge structure; 9. a first knob; 10. a second knob; 31. a first tread; 32. a second tread; 33. a third tread; 51. a clamping plate; 61. a first clamping block; 62. a second clamping block; 63. a gear; 64. a rack portion; 65. a barb portion; 66. a latch hook; 67. an elastic member; 68. unlocking the block; 69. a clamping hook; 81. and a clamping part.

Detailed Description

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.

As shown in fig. 1-4, in one aspect of the present disclosure, a stepped steel slab-based node structure is disclosed, comprising:

the beam column 1, the bottom plate 2, the first step block 3 and the second step block 4;

the first step block 3 is connected with the side wall of the beam column 1, and the first step block 3 and the second step block 4 are matched in place and then connected with the upper end surface of the bottom plate 2;

the node structure further comprises a locking plate 5 and a clamping and locking device 6;

the locking plates 5 are arranged on two sides of the first step block 3 and the second step block 4;

one end of the lock plate 5 matched with the first step block 3 and the second step block 4 is provided with a plurality of wedge block structures 8, the butt joint parts of the first step block 3 and the second step block 4 are in a step shape, and a plurality of clamping containing cavities 7 matched with the wedge block structures 8 are formed together after the lock plate is matched in place;

the clamping lock device 6 is arranged between the lock plates 5 on both sides to lock the lock plates 5 on both sides.

Specifically, the butt joint department of first ladder piece 3, second ladder piece 4 is the echelonment, can coincide each other after the butt joint, and first ladder piece 3 and second ladder piece 4 all have a part of joint appearance chamber 7, form complete joint appearance chamber 7 after the butt joint, and locking plate 5 is in both sides through inserting wedge structure 8 adaptation in joint appearance chamber 7 to can paste tightly in both sides, wedge structure 8 and joint appearance chamber 7 carry out the block, let first ladder piece 3, the chucking of second ladder piece 4 and internal force can stable conduction. The locking plates 5 on two sides can be locked by adjusting the clamping and locking device 6, the locking plates 5 are tightly clamped on two sides of the first step block 3 and the second step block 4, and when the locking and locking device is disassembled, the locking plates 5 on two sides can be opened by adjusting the clamping and locking device 6, so that the locking plates 5 and the adjusting clamping and locking device 6 are integrally separated from the first step block 3 and the second step block 4.

In some embodiments, the clamping lock device 6 comprises a first clamping block 61, a second clamping block 62, a gear 63;

the first clamping block 61 and the second clamping block 62 are respectively connected with the lock plates 5 at the two sides;

the first and second clamping blocks 61, 62 each have a rack portion 64,

the first and second clamping blocks 61 and 62 are disposed opposite to each other, and the gear 63 is disposed between two opposite rack portions 64.

With the above technical solution, the rotation gear 63 cooperates with the rack portion 64, so that the first clamping block 61 and the second clamping block 62 move in opposite directions, and the lock plate 5 is opened or clamped on both sides of the first step block 3 and the second step block 4.

In some embodiments, the end of the second clamp block 62 has a barb 65;

the first clamping block 61 is internally provided with a lock hook 66, an elastic piece 67 and an unlocking block 68;

one end of the latch hook 66 is rotatably connected with the inside of the first clamping block 61;

the unlocking block 68 is rotatably connected with the inside of the first clamping block 61;

the other end of the latch hook 66 is matched with an unlocking block 68;

the side of the latch hook 66 is provided with a latch hook 69;

the hook 69 is matched with the inverted hook part 65;

the elastic member 67 is engaged with the middle portion of the latch hook 66.

By adopting the technical scheme, when clamping, the gear 63 is rotated, the first clamping block 61 and the second clamping block 62 are enabled to move towards the middle part, after the inverted hook part 65 is contacted with the clamping hook 69, the locking hook 66 is lifted upwards, the inverted hook part 65 and the clamping hook 69 are enabled to be hooked mutually, the elastic piece 67 is compressed again, and therefore the first clamping block 61 and the second clamping block 62 are prevented from moving back towards the outside, and the locking plate 5 is prevented from being separated from the first step block 3 and the second step block 4. When the lock is disassembled, the unlocking block 68 is rotated to jack up the lock hook 66 upwards, the elastic piece 67 is compressed, the hook 65 and the hook 69 are in a unhooked state, the gear 63 is rotated reversely, the first clamping block 61 and the second clamping block 62 move outwards, and the lock plate 5 is separated from the first step block 3 and the second step block 4, so that the lock plate 5 can be taken out integrally with the lock clamping device 6.

In some embodiments, the interface of the first step block 3 and the second step block 4 comprises a first step surface 31, a second step surface 32 and a third step surface 33 which are consecutive;

the first ladder surface 31, the second ladder surface 32 and the third ladder surface 33 are all provided with clamping accommodating cavities 7

The second tread 32 is inclined.

By adopting the technical scheme, the first ladder surface 31, the second ladder surface 32 and the third ladder surface 33 form a coherent Z-shaped ladder-shaped matching surface, and the inclination direction of the second ladder surface 32 is an inclination state gradually lifted along the first ladder surface 31 to the third ladder surface 33, so that after the first ladder block 3 and the second ladder block 4 are butted, the first ladder surface 31 and the second ladder block 4 can be hooked with each other, and then the first ladder block and the second ladder block are matched with the upper wedge block structure 8 to be clamped with the clamping accommodating cavity 7 in a matched manner, so that the whole body is stressed stably. It should be noted that, the matching of three planes is an alternative embodiment, and more than three planes can be adopted, each plane is provided with a corresponding clamping cavity 7 and a matched wedge structure 8 is arranged at a corresponding position of the lock plate 5.

In some embodiments, the wedge structure 8 has two clamping portions 81 at two ends, wherein the clamping portion 81 at one end is matched with the first step block 3, and the clamping portion 81 at the other end is matched with the second step block 4.

By adopting the technical scheme, the middle part of the wedge block structure 8 is positioned between the first step block 3 and the second step block 4, and the clamping parts 81 at two ends are respectively matched with the first step block 3 and the second step block 4 for clamping and matching, so that the first step block 3 and the second step block 4 are clamped. It should be noted that the engaging portion 81 may be a taper, a stepped shape, or a structure with a barb, but is not limited thereto, and the first step block 3 and the second step block 4 at both ends may be engaged with each other (as shown in fig. 4 to 6).

In some embodiments, the outer side of the lock plate 5 is provided with a clamping plate 51;

the end part of the clamping plate 51 is connected with a first clamping block 61 and a second clamping block 62;

the side of the clamping plate 51 is connected to the clamping plate 51.

By adopting the technical scheme, the clamping plate 51 can be used as a transitional connecting piece between the first clamping block 61, the second clamping block 62 and the lock plate 5, and the clamping plate 51 can cover the outer side of the lock plate 5 more widely, when the first clamping block 61 and the second clamping block 62 drive to clamp or open, the lock plate 5 can uniformly bear force at each place, and each wedge block structure 8 and the clamping accommodating cavity 7 can be in clamping fit. The clamping plate 51 and the locking plate 5 may be coupled by bolts, but are not limited thereto. The clamping plate 51 and the first and second clamping blocks 61 and 62 may be coupled by bolts, but are not limited thereto.

In some embodiments, the top of the clamp lock device 6 is provided with a first knob 9 and a second knob 10;

the first knob 9 is connected with the gear 63 in a matching way;

the second knob 10 is adapted to be connected with the unlocking block 68.

With the above technical solution, the rotation of the gear 63 can be achieved by rotating the first knob 9, and the rotation of the unlocking block 68 can be achieved by rotating the second knob 10. It should be noted that, the first knob 9 and the second knob 10 may be provided with auxiliary rotating tools, so that the rotating process is more labor-saving.

In another aspect of the present disclosure, a construction method of a stepped steel slab-based node structure is disclosed, including the steps of:

connecting the bottom plate 2 to the beam column 1 at the position where the node is required to be arranged;

the first step block 3 is arranged on the bottom plate 2 and is connected with the beam column 1;

the second step block 4 is in butt joint with the first step block 1, so that each clamping accommodating cavity 7 corresponds accurately;

the lock plate 5 is correspondingly arranged at two sides, and the wedge block structure 8 corresponds to the clamping containing cavity 7;

the locking plates 5 on two sides are clamped towards the middle through the clamping and locking device 6, and each wedge block structure 8 is inserted into the corresponding clamping accommodating cavity 7;

the lock plate 5 is locked on both sides by the clip lock device 6, preventing the lock plate 5 from being separated from the first step block 3 and the second step block 4.

In some embodiments, the bottom plate 2 is connected to the beam column 1 at the point where the node is to be provided, where it can be connected by welding, by bolting, or by a transitional connection, without limitation. Furthermore, it should be noted that, as an alternative, in order to enhance the connection firmness, a reinforcing structure may be disposed at the lower end of the bottom plate 2, so that the bottom plate 2 and the beam column 1 are connected more stably.

The first step block 3 is arranged on the bottom plate 2 and is connected with the beam column 1. The first step block 4 may be connected to the bottom plate 2 and the beam column 1 by welding or bolts, or may be connected by a transitional connection member, which is not limited herein.

The second step block 4 is in butt joint with the first step block 3, so that each clamping accommodating cavity 7 corresponds accurately. It should be noted that, the second step block 4 and the first step block 3 all have a portion of the clamping accommodating cavity 7, and when the abutting surfaces of the second step block 4 and the first step block 3 are matched in place, the complete clamping accommodating cavity 7 is formed.

The locking plates 5 are correspondingly arranged at two sides, and the wedge block structures 8 correspond to the clamping containing cavities 7. After the wedge block structure 8 corresponds to the position of the clamping containing cavity 7, the wedge block structure 8 can be inserted into the corresponding clamping containing cavity 7, and it is to be noted that both sides of the second step block 4 and the first step block 3 are provided with the clamping containing cavities 7, and the locking plate 5 is arranged on both sides so as to clamp the second step block 4 and the first step block 3 in the middle.

The locking plates 5 on two sides are clamped towards the middle through the clamping and locking device 6, and each wedge block structure 8 is inserted into the corresponding clamping accommodating cavity 7; the lock plate 5 is locked on two sides through the clamping and locking device 6, so that the lock plate 5 is prevented from being separated from the first step block 3 and the second step block 4. The two sides of the clamping and locking device 6 are connected with the locking plate 5, and can drive the locking plate 5 to move towards the middle or the outside, so that the clamping or the opening can be adjusted. In some embodiments, as shown in fig. 3, by rotating the gear 63, the first clamping block 61 and the second clamping block 62 are moved towards the middle, after the hook 65 contacts the hook 69, the hook 66 is lifted upwards, the hook 65 and the hook 69 are hooked with each other, and the elastic member 67 is compressed again, so that the first clamping block 61 and the second clamping block 62 are prevented from moving back towards the outside, and the locking plate 5 is separated from the first step block 3 and the second step block 4. When the lock is disassembled, the unlocking block 68 is rotated to jack up the lock hook 66 upwards, the elastic piece 67 is compressed, the hook 65 and the hook 69 are in a unhooked state, the gear 63 is rotated reversely, the first clamping block 61 and the second clamping block 62 move outwards, and the lock plate 5 is separated from the first step block 3 and the second step block 4, so that the lock plate 5 can be taken out integrally with the lock clamping device 6.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.

Claims

1. Node structure based on ladder steel plate formula, characterized by includes:

the beam column (1), the bottom plate (2), the first step block (3) and the second step block (4);

the first step block (3) is connected with the side wall of the beam column (1), and the first step block (3) is matched with the second step block (4) in place and then connected with the upper end surface of the bottom plate (2);

wherein, the node structure also comprises a locking plate (5) and a clamping and locking device (6);

the locking plates (5) are arranged on two sides of the first step block (3) and the second step block (4);

one end of the locking plate (5) matched with the first step block (3) and one end of the second step block (4) are provided with a plurality of wedge block structures (8), the butt joint parts of the first step block (3) and the second step block (4) are in a step shape, and a plurality of clamping containing cavities (7) matched with the wedge block structures (8) are formed together after the locking plate is matched in place;

the clamping and locking device (6) is arranged between the locking plates (5) at two sides so as to lock the locking plates (5) at two sides;

the clamping and locking device (6) comprises a first clamping block (61), a second clamping block (62) and a gear (63);

the first clamping block (61) and the second clamping block (62) are respectively connected with the lock plates (5) at two sides;

the first clamping block (61) and the second clamping block (62) are provided with a rack part (64),

the first clamping block (61) and the second clamping block (62) are oppositely arranged, and the gear (63) is arranged between the two opposite rack parts (64).

2. The stepped steel slab-based node structure of claim 1, wherein:

the end part of the second clamping block (62) is provided with a reverse hook part (65);

a lock hook (66), an elastic piece (67) and an unlocking block (68) are arranged in the first clamping block (61);

one end of the lock hook (66) is rotatably connected with the inside of the first clamping block (61);

the unlocking block (68) is rotatably connected with the inside of the first clamping block (61);

the other end of the lock hook (66) is matched with the unlocking block (68);

the side part of the lock hook (66) is provided with a clamping hook (69);

the clamping hook (69) is matched with the inverted hook part (65);

the elastic piece (67) is matched with the middle part of the lock hook (66).

3. The stepped steel slab-based node structure of claim 1, wherein:

the butt joint parts of the first step block (3) and the second step block (4) comprise a first step surface (31), a second step surface (32) and a third step surface (33) which are coherent;

the first ladder surface (31), the second ladder surface (32) and the third ladder surface (33) are respectively provided with the clamping accommodating cavity (7);

the second tread (32) is inclined.

4. The stepped steel slab-based node structure of claim 1, wherein:

two ends of the wedge block structure (8) are provided with clamping parts (81), wherein the clamping parts (81) at one end are matched with the first step blocks (3), and the clamping parts (81) at the other end are matched with the second step blocks (4).

5. The stepped steel slab-based node structure of claim 1, wherein:

the outer side part of the lock plate (5) is provided with a clamping plate (51);

the end part of the clamping plate (51) is connected with the first clamping block (61) and the second clamping block (62);

the side of the clamping plate (51) is connected with the clamping plate (51).

6. A stepped steel slab-based node structure according to claim 2, wherein:

the top of the clamping and locking device (6) is provided with a first knob (9) and a second knob (10);

the first knob (9) is connected with the gear (63) in an adapting way;

the second knob (10) is connected with the unlocking block (68) in a matching way.

7. Construction method of a step steel plate based node structure, comprising the step steel plate based node structure according to any one of claims 1-6, characterized by comprising the steps of: