A connection node and assembly process for assembled steel structure columns

Abstract

The present invention discloses a connection node and assembly process for assembled steel structure columns. The connection node includes an upper connection structure, a lower connection structure and a plurality of bolt devices. The lower connection structure includes a connection steel plate. A first connection end is provided at one end of the connection steel plate, and a second connection end is provided at the other end. The second connection end can be inserted into the upper connection structure and unilaterally fastened by a bolt device. The assembly process is: the lower connection structure is set at the top of the steel structure column located at the lower end, and the upper connection structure is set at the bottom of the steel structure column located at the upper end, and then the upper connection structure and the lower connection structure are unilaterally fastened by a plurality of bolt devices, so as to fix the two steel structure columns. The present invention has a simple structure and is easy to install. It realizes the vertical connection of steel pipe columns. The length of the connection section can reduce the number of connection sections and bolts by half by inserting and nesting the connection, and can realize rapid installation on site, greatly improving the assembly efficiency.

Description

Technical Field

[0001] The invention relates to a building steel structure, and in particular to a connection node and an assembly process for assembled steel structure columns. Background Art

[0002] Steel structure is a natural prefabricated structure. Prefabricated steel structure buildings have the following advantages:

[0003] 1) There are no cast-in-place nodes, so the installation speed is faster and the construction quality is easier to ensure;

[0004] 2) Steel structure is a ductile material with better earthquake resistance;

[0005] 3) Compared with concrete structures, steel structures have lighter deadweight and lower foundation costs;

[0006] 4) Steel structure is a recyclable material, which is more environmentally friendly;

[0007] 5) Well-designed steel structure prefabricated buildings are more economical than prefabricated concrete buildings.

[0008] 6) The cross-section of beams and columns is smaller, which can obtain more usable area.

[0009] At present, the column connection nodes of prefabricated steel structures are mainly connected by bolt welding, but it is recommended to use bolt connection nodes for prefabricated steel structures. The benefits of bolt connection are:

[0010] 1) Fast installation;

[0011] 2) It is easier to control construction quality.

[0012] 3) On-site welds are the main parts of steel structures that are prone to corrosion (improper on-site paint treatment). Full bolt connections can avoid such parts and allow the paint to be applied entirely by the factory, greatly improving the corrosion resistance of steel structures.

[0013] In the prior art, there is an assembled node (CN107806273A) used for a single-layer steel structure cooling tower. The node structure is very complex, the cost is high, and it cannot be fastened in a single piece, and the assembly efficiency is very low. Summary of the invention

[0014] In order to solve the above problems, the present invention provides a connection node for assembled steel structure columns.

[0015] To achieve the above object, the technical solution of the present invention is as follows:

[0016] A connection node for a prefabricated steel structure column, the connection node comprises an upper connection structure, a lower connection structure and a plurality of bolt devices, the lower connection structure comprises a connection steel plate, one end of the connection steel plate is provided with a first connection end, and the other end is provided with a second connection end, the second connection end can be inserted into the upper connection structure and unilaterally fastened by the bolt device, the bolt device comprises a screw rod, an inner nut, and an outer nut, the screw rod comprises a rod body and a fixing nut, the rod body is provided with a connecting thread, the rod body is connected with the inner nut through the connecting thread, the bottom end of the rod body is provided with a connecting groove, the connecting groove is connected with an external fixing piece, the external fixing piece can drive the rod body to rotate, so that the rod body can pass through the inner nut, the second connection end and the upper connection structure in sequence, and the outer nut is threadedly connected to the rod body that passes through the inner nut, the second connection end and the upper connection structure in sequence.

[0017] In a preferred embodiment of the present invention, the upper connecting structure comprises a steel pipe, and a plurality of first connecting holes are provided on the steel pipe.

[0018] In a preferred embodiment of the present invention, the second connecting end has the same shape as the upper connecting structure, and the tube diameter of the second connecting end is smaller than that of the upper connecting structure. The second connecting end is provided with a plurality of second connecting holes, and each second connecting hole corresponds to a first connecting hole, and the rod body can pass through the inner nut, the second connecting hole and the first connecting hole in sequence.

[0019] In a preferred embodiment of the present invention, the connecting steel plate is rectangular.

[0020] In a preferred embodiment of the present invention, the first connecting end is a rectangular column.

[0021] In a preferred embodiment of the present invention, the connecting thread is arranged at the bottom end of the rod body.

[0022] In a preferred embodiment of the present invention, a limiting hole is provided on the contact surface between the inner nut and the fixing nut, and the fixing nut can be embedded in the limiting hole.

[0023] An assembly process for assembled steel structure columns, the assembly process comprising: setting a lower connection structure at the top of a steel structure column located at the lower end, setting an upper connection structure at the bottom of a steel structure column located at the upper end, and then unilaterally fastening the upper connection structure and the lower connection structure by means of a plurality of bolt devices, thereby fixing the two steel structure columns.

[0024] In a preferred embodiment of the present invention, the unilateral tightening of the bolt device specifically comprises the following steps:

[0025] (1) First, each inner nut is arranged on the inner side surface of the second connecting end, and each inner nut is matched with a second connecting hole;

[0026] (2) Then the rod body is threadedly connected to the inner nut so that the rod body is fixed on the inner nut;

[0027] (3) Then, the upper connecting structure is sleeved onto the second connecting end;

[0028] (4) Then, the external fixing member is passed through the first connection hole, the second connection hole and the inner nut in sequence, and is inserted into the connection groove at the bottom end of the rod body. At this time, the fixing member is connected to the rod body as a whole, and then the rod body can be driven to rotate in the inner nut. When the portion at the bottom end of the rod body with the connecting thread passes through the inner nut, the fixing member can directly drive the rod body to move. At this time, the rod body can pass through the second connection hole and the first connection hole in sequence, so as to be exposed on the outside of the upper connection structure;

[0029] (5) Finally, the outer nut only needs to be put on the rod body and connected with the connecting thread on the rod body to achieve a single-piece fastening between the upper connecting structure and the lower connecting structure.

[0030] The beneficial effects of the present invention are:

[0031] The present invention has a simple structure and is easy to install, and realizes the vertical connection of steel pipe columns. The length of the connection section can be halved by inserting a nested connection method, and the number of connection sections and bolts can be halved, and rapid installation on site can be achieved, greatly improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 is a schematic diagram of the structure of the bolt device;

[0035] Figure 3 is a schematic diagram of the structure of the screw;

[0036] Figure 4 The assembly diagram of the present invention is shown in FIG. Figure 1 ;

[0037] Figure 5 The assembly diagram of the present invention is shown in FIG. Figure 2 ;

[0038] Figure 6 The assembly diagram of the present invention is shown in FIG. Figure 3 ;

[0039] Figure 7 The assembly diagram of the present invention is shown in FIG. Figure 4 . DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0041] See also Figures 1 to 7 The connection node for the assembled steel structure column provided by the present invention includes an upper connection structure 110, a lower connection structure 120 and a plurality of bolt devices.

[0042] The upper connection structure 110 is specifically a steel pipe in a rectangular or other shape, and a plurality of first connection holes 111 are provided on the steel pipe.

[0043] The lower connection structure 120 includes a connection steel plate 121 . A first connection end 122 is disposed at one end of the connection steel plate 121 , and a second connection end 123 is disposed at the other end of the connection steel plate 121 .

[0044] The connecting steel plate 121 is rectangular, and its length and width are greater than the first connecting end 122 and the second connecting end 123 .

[0045] The second connection end 123 has the same shape as the upper connection structure 110 , which is also a rectangular or other shaped steel pipe, and the pipe diameter of the second connection end 123 is smaller than that of the upper connection structure 110 , so that the second connection end 123 can be inserted into the upper connection structure 110 .

[0046] A plurality of second connection holes 1231 are provided on the second connection end 123, and when the second connection end 123 is inserted into the upper connection structure 110, each second connection hole 1231 can correspond to a first connection hole 111, so that the upper connection structure 110 and the lower connection structure 120 can be fixed by only passing each bolt device through the second connection hole 1231 and the first connection hole 111 in turn.

[0047] The first connection end 122 is specifically a rectangular column.

[0048] The bolt device is used to fix the upper connection structure 110 and the lower connection structure 120, and can achieve unilateral fastening.

[0049] The bolt device includes a screw rod 200 , an inner nut 300 and an outer nut 400 .

[0050] The screw rod 200 specifically includes a rod body 210 and a fixing nut 220 . The fixing nut 220 is fixed to the top end of the rod body 210 . A connecting thread 211 is provided on the rod body 210 .

[0051] In addition, the connecting thread 211 is arranged on the outer surface of the bottom end of the rod body 210, but not on the entire outer surface of the rod body, so that the screw rod 200 can rotate freely after rotating a certain length on the inner nut 300, which is convenient for external adjustment.

[0052] The inner nut 300 is circular or hexagonal, and has a screw hole inside it that corresponds to the connecting thread 211 on the rod body 210. It is arranged on the inner side surface of the second connecting end 123 and corresponds to the second connecting hole 1231 on the second connecting end 123. The rod body 210 can be threadedly connected to the inner nut 300 through the connecting thread 211, and can pass through the inner nut 300, the second connecting hole 1231 and the first connecting hole 111 in sequence. When the rod body 210 is inserted into the second connecting hole 1231 and the first connecting hole 111, the inner nut 300 can be fixed on the inner side surface of the second connecting end 123.

[0053] In addition, in order to further improve the firmness, the inner nut 300 may also be directly welded and fixed on the second connecting end 123 , and the screw hole on the inner nut 300 corresponds to the second connecting hole 1231 on the second connecting end 123 .

[0054] Furthermore, the length of the connecting thread 211 on the rod body 210 is greater than the depth of the internal screw hole of the inner nut 300, which can greatly reduce the movement resistance of the rod body 210 and improve the assembly efficiency.

[0055] A connecting groove 212 is provided at the bottom end of the rod body 210, and the connecting groove 212 is used to cooperate with an external fixing part. The staff can insert the fixing part into the connecting groove 212 through the first connecting hole 111 and the second connecting hole 1231 in sequence, and then rotate the rod body 210 through the fixing part, so that the connecting thread 211 on the rod body 210 is rotationally connected with the screw hole in the inner nut 300, and then when the rod body 210 provided with the connecting thread 211 passes through the inner nut 300, the fixing part can drive the rod body 210 to pass through the second connecting hole 1231 and the first connecting hole 111 in sequence, and then be exposed on the outside of the upper connecting structure 110.

[0056] The connecting groove 212 may be specifically circular, and a thread is provided in the connecting groove 212 , so that the connecting groove 212 can be rotatably fixed to the rod body 210 through an external screw rod, and drive the rod body 210 to rotate.

[0057] The connecting groove 212 may be in a rectangular, hexagonal or other shapes, so that a rod body corresponding to the shape of the connecting groove 212 can be inserted into the connecting groove 212 and then drive the rod body 210 to rotate.

[0058] When the rod body 210 passes through the second connecting hole 1231 and the first connecting hole 111 in sequence and is then exposed on the outside of the upper connecting structure 110, the outer nut 400 can be sleeved on the rod body 210 and matched with the connecting thread 211 on the rod body 210 to achieve the fixation of the upper connecting structure 110 and the lower connecting structure 120.

[0059] The outer nut is specifically hexagonal.

[0060] In addition, before the outer nut is sleeved on the rod body 210 , a protective pad 500 may be sleeved on the rod body 210 .

[0061] In order to further improve the firmness, a limiting hole 310 is provided on the contact surface between the inner nut 300 and the fixing nut 220. The limiting hole 310 is specifically hexagonal. When the fixing nut 220 contacts the inner nut 300, the fixing nut 220 can be embedded in the limiting hole 310 as a whole, so that the screw 200 will not loosen.

[0062] Based on the implementation of the above scheme, the present application also discloses an assembly process for prefabricated steel structure columns, which is: setting the lower connecting structure 120 at the top of the steel structure column located at the lower end, setting the upper connecting structure 110 at the bottom end of the steel structure column located at the upper end, and then unilaterally fastening the upper connecting structure 110 and the lower connecting structure 120 through a plurality of bolt devices, thereby fixing the two steel structure columns.

[0063] Among them, the unilateral tightening of the bolt device specifically includes the following steps:

[0064] (1) First, each inner nut 300 is arranged on the inner side surface of the second connecting end 123, and each inner nut is matched with a second connecting hole 1231;

[0065] (2) Then the rod body 210 is threadedly connected to the inner nut 300 so that the rod body 210 is fixed on the inner nut 300;

[0066] (3) Then, the upper connection structure 110 is sleeved on the second connection end 123, and the first connection hole 111 and the second connection hole 1231 are aligned one by one;

[0067] (4) Then, the external fixing member is sequentially passed through the first connection hole 111, the second connection hole 1231 and the inner nut 300, and inserted into the connection groove 212 at the bottom end of the rod body 210. At this time, the fixing member is connected to the rod body 210 as a whole, and then the rod body 210 can be driven to rotate in the inner nut 300. When the portion of the bottom end of the rod body 210 with the connecting thread 211 passes through the inner nut 300, the fixing member can directly drive the rod body 210 to move. At this time, the rod body 210 can sequentially pass through the second connection hole 1231 and the first connection hole 110, so as to be exposed on the outside of the upper connection structure 110;

[0068] (5) Finally, the outer nut 400 only needs to be sleeved on the rod body 210 and connected with the connecting thread 211 on the rod body 210 to achieve a single-piece fastening between the upper connecting structure 110 and the lower connecting structure 120.

[0069] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A connection node for assembled steel structure columns, characterized in that: The connection node comprises an upper connection structure, a lower connection structure and a plurality of bolt devices, wherein the upper connection structure is provided with a plurality of first connection holes; the lower connection structure comprises a connection steel plate, wherein one end of the connection steel plate is provided with a first connection end, and the other end is provided with a second connection end, wherein the second connection end is provided with a plurality of second connection holes, and each second connection hole corresponds to a first connection hole; the second connection end can be inserted into the upper connection structure and unilaterally fastened by the bolt device; The bolt device comprises a screw rod, an inner nut and an outer nut. The screw rod comprises a rod body and a fixing nut. The rod body is provided with a connecting thread, which is arranged on the outer surface of the bottom end of the rod body, but not on the entire outer surface of the rod body. After the screw rod is rotated on the inner nut for a certain length, it can rotate freely to facilitate external adjustment. The rod body is connected with the inner nut through a connecting thread, a fixing nut is arranged at the top of the rod body, and a connecting groove is arranged at the bottom of the rod body. The rod body can pass through the inner nut, the second connecting hole and the first connecting hole in sequence, so that the connecting groove at the bottom of the rod body is connected with the external fixing member; The inner nut is directly fixed on the inner side surface of the second connecting end, and a screw hole is provided inside the inner nut to correspond to the connecting thread on the rod body; The external fixing piece can pass through the first connecting hole and the second connecting hole in sequence from the outside of the connecting node and be inserted into the connecting groove at the bottom end of the screw rod. Then, the rod body is rotated through the fixing piece so that the connecting thread on the rod body is rotationally connected with the screw hole in the inner nut. Then, when the part with the connecting thread at the bottom end of the rod body passes through the inner nut, the fixing piece can directly drive the rod body to move. At this time, the rod body can pass through the second connecting hole and the first connecting hole in sequence, so as to be exposed on the outside of the upper connecting structure. The external nut is threadedly connected to the rod body that passes through the inner nut, the second connecting end and the upper connecting structure in sequence.

2. A connection node for a prefabricated steel structure column according to claim 1, characterized in that: The upper connection structure comprises a steel pipe, and a plurality of first connection holes are arranged on the steel pipe.

3. A connection node for a prefabricated steel structure column according to claim 2, characterized in that: The second connection end has the same shape as the upper connection structure, and a diameter of the second connection end is smaller than that of the upper connection structure.

4. A connection node for a prefabricated steel structure column according to claim 1, characterized in that: The connecting steel plate is rectangular.

5. A connection node for a prefabricated steel structure column according to claim 1, characterized in that: The first connecting end is a rectangular column.

6. A connection node for a prefabricated steel structure column according to claim 1, characterized in that: The connecting thread is arranged at the bottom end of the rod body.

7. A connection node for a prefabricated steel structure column according to claim 1, characterized in that: A limiting hole is provided on the contact surface between the inner nut and the fixing nut, and the fixing nut can be embedded in the limiting hole.

8. An assembly process for assembled steel structure columns, characterized in that: The assembly process is based on the connection node described in any one of claims 1 to 7. First, the lower connection structure is set at the top of the steel structure column at the lower end, and the upper connection structure is set at the bottom of the steel structure column at the upper end. Then, the upper connection structure and the lower connection structure are unilaterally fastened from the inside through a plurality of bolt devices through fixing parts from the outside, thereby fixing the two steel structure columns.

9. The assembly process for assembled steel structure columns according to claim 8, characterized in that: The unilateral tightening of the bolt device specifically includes the following steps: (1) First, each inner nut is arranged on the inner side surface of the second connecting end, and each inner nut is matched with a second connecting hole; (2) Then the rod body is threadedly connected to the inner nut so that the rod body is fixed on the inner nut; (3) Then, the upper connecting structure is sleeved onto the second connecting end; (4) Then, the external fixing member is passed through the first connection hole, the second connection hole and the inner nut in sequence, and is inserted into the connection groove at the bottom end of the rod body. At this time, the fixing member is connected to the rod body as a whole, and then the rod body can be driven to rotate in the inner nut. When the portion at the bottom end of the rod body with the connecting thread passes through the inner nut, the fixing member can directly drive the rod body to move. At this time, the rod body can pass through the second connection hole and the first connection hole in sequence, so as to be exposed on the outside of the upper connection structure; (5) Finally, the outer nut only needs to be put on the rod body and connected with the connecting thread on the rod body to achieve a single-piece fastening between the upper connecting structure and the lower connecting structure.

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