Connecting structure of steel column and concrete column

Abstract

According to the connecting structure of the steel column and the concrete column, the cross section of the concrete column is rectangular, and the connecting structure comprises a bottom plate, a connecting piece and a connecting piece, the first side clamping pieces are connected with the bottom plate and correspond to two parallel side vertical faces of the concrete column, the first side clamping pieces are located on the outer sides of the side vertical faces, axis deviation of the concrete column and the steel column is limited in the first direction, and first penetrating holes are formed in the first side clamping pieces; the second side clamping pieces are located below the bottom plate and correspond to the other two parallel side vertical faces of the concrete column, and each second side clamping piece is provided with a second penetrating hole corresponding to the first penetrating hole; the connecting rod is arranged in the first through hole and the second through hole in a penetrating mode, the two ends of the connecting rod are each connected with one second side clamping piece, the two second side clamping pieces are attached to the side vertical face, the axis deviation of the concrete column and the axis deviation of the steel column are limited in the second direction perpendicular to the first direction, and therefore the construction difficulty of increasing the steel column at the upper end of the concrete column is lowered, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structure component technical field especially a connecting structure of steel column and concrete column. BACKGROUND

[0002] In conventional reinforcement or expansion engineering, it is often necessary to add a steel column on the top of an existing concrete column to realize structure heightening. The current construction method usually needs to drill holes on the top surface of the concrete column and implant chemical anchors, and the steel column bottom is connected through the anchors to complete the heightening. However, this process has significant technical defects:

[0003] Firstly, due to the difficulty in accurately positioning the internal steel bar arrangement position of the concrete column, collision with the main reinforcement is likely to occur during drilling, resulting in structural damage and affecting the anchoring reliability;

[0004] Secondly, the high-altitude operation environment is complex, and it is difficult for the operator to accurately position the hole opening position, and the drilling perpendicularity control is difficult, and the limited operation space on the top surface of the concrete further increases the construction operation difficulty.

[0005] The above technical bottlenecks seriously restrict the safety and construction efficiency of structure reconstruction engineering, and urgently need to be solved through process innovation. INVENTION CONTENTS

[0006] In view of the above-mentioned shortcomings in the prior art, the present application provides a connecting structure of steel column and concrete column, thereby reducing the construction difficulty of adding a steel column on the upper end of a concrete column and improving the construction efficiency.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A connecting structure of steel column and concrete column, the cross section of the concrete column is rectangular, and the connecting structure comprises:

[0009] A bottom plate welded to the bottom of the steel column, the bottom plate is in contact with the top end surface of the concrete column;

[0010] A pair of first side clamps connected to the bottom plate, corresponding to two mutually parallel side surfaces of the concrete column, the first side clamps are located outside the side surfaces, and the first side clamps limit the axial offset of the concrete column and the steel column from the first direction, and the first side clamps are provided with first perforations;

[0011] A pair of second side clamps located below the bottom plate, corresponding to the other two mutually parallel side surfaces of the concrete column, and each second side clamp is provided with second perforations corresponding to the first perforations;

[0012] A connecting rod is arranged in the first and second through holes, and two ends of the connecting rod are connected with a second side clamping piece respectively, so that the two second side clamping pieces are attached to the side vertical surface and the axis of the concrete column and the steel column is limited from deviating in the second direction perpendicular to the first direction.

[0013] As a further improvement of the above technical solution:

[0014] The second side clamping piece is plate-shaped, the second through hole penetrates the second side clamping piece along the thickness direction of the second side clamping piece, both ends of the connecting rod are provided with threads, and nuts are arranged on both ends of the connecting rod, so that the concrete column is clamped between the two second side clamping pieces after the nuts are locked.

[0015] The second side clamping piece is welded with the bottom plate.

[0016] The first side clamping piece comprises a limiting portion below the bottom plate, the limiting portion is welded with the bottom plate, the first through hole is arranged on the limiting portion, and the limiting portion is used for limiting the axis of the concrete column and the steel column from deviating.

[0017] The first side clamping piece further comprises a connecting portion above the bottom plate, and the bottom plate and the steel column are welded with the connecting portion.

[0018] The first side clamping piece comprises two clamping plates, the two clamping plates are arranged in parallel and are spaced apart, one end of the length direction of the clamping plate is the connecting portion, the other end of the length direction of the clamping plate is the limiting portion, and the middle part of the clamping plate is a avoiding gap welded with the bottom plate.

[0019] A connecting plate is arranged between the two clamping plates, and the connecting plate is used for connecting the two clamping plates.

[0020] The limiting portion is provided with a limiting end on the side facing the corresponding side vertical surface, the limiting end is in contact with the corresponding side vertical surface, and the axis of the concrete column and the steel column is limited from deviating in the first direction.

[0021] The limiting end is a plug plate with a first inclined surface, a second inclined surface is arranged on the limiting portion, an opening is formed between the second inclined surface and the side vertical surface and faces away from the steel column, the limiting end is inserted into the opening, the limiting end is in contact with the corresponding side vertical surface when the first inclined surface is in contact with the second inclined surface, and the limiting end is fixed on the limiting portion after being welded with the connecting plate.

[0022] Further comprising a reinforcing structure, the reinforcing structure connects the side surface of the steel column and the top surface of the bottom plate.

[0023] The beneficial effects of the utility model are as follows:

[0024] The utility model discloses compact, reasonable, convenient operation is at the bottom of steel column and set up the bottom plate as the contact surface of concrete column and steel column, and two groups of side clamping pieces are installed on the bottom plate simultaneously, and the axial line deviation of concrete column and steel column is limited from the outside of rectangular concrete column, and the second side clamping piece is coupled with the first side clamping piece through connecting rod, and it is convenient for the second side clamping piece to be installed after the butt joint of connecting structure and concrete column restricts the axial line deviation of concrete column and steel column from two orthogonal directions, reduces the construction difficulty of increasing steel column on the upper end of concrete column, and improves construction efficiency.

[0025] The utility model also includes the following advantages:

[0026] (1) in order to guarantee the second side clamping piece and the adhesion effect of concrete column, when assembling the connecting structure, after the nut locking, under the condition that guaranteeing the distance between two second side clamping pieces, the second side clamping piece and the bottom plate are welded, and the limiting effect of the second side clamping piece is best.

[0027] (2) the connecting part and the limiting part of the first side clamping piece are provided with lateral support force to steel column and concrete column from the axis side of the column respectively after spanning the bottom plate, guaranteeing the strength of the connecting structure, and the first side clamping piece is formed after the clamping plate is connected with the bottom plate, facilitating the assembly of the first side clamping piece and steel column.

[0028] (3) the first side clamping piece adopts the mode that part structure is welded on the steel column in advance, and after the steel column is initially positioned, the limiting end of the wedge structure is installed, and the first side clamping piece is integrally welded and formed, so that the limiting end is attached to the side vertical surface, guaranteeing good limiting effect. ACCURACY OF DRAWINGS

[0029] Figure 1 It is the front view of the connecting structure of one embodiment of the utility model.

[0030] Figure 2 It is the side view of the connecting structure of one embodiment of the utility model.

[0031] Figure 3 It is the plan view of the connecting structure of one embodiment of the utility model.

[0032] Figure 4 It is Figure 2 The sectional view of A-A section.

[0033] Figure 5 It is Figure 2 The sectional view of B-B section.

[0034] Figure 6 It is the structure schematic view of the first side clamping piece of one embodiment of the utility model.

[0035] Figure 7 It is the structure schematic view of the connecting structure of another embodiment of the utility model.

[0036] Figure 8 This is a cross-sectional view of the connection structure according to another embodiment of the present invention.

[0037] Figure 9 This is a schematic diagram of the structure of the first side clamp in another embodiment of the present invention.

[0038] Figure 10 This is a schematic diagram of the structure of the second side clamp of this utility model.

[0039] in:

[0040] 1. Concrete column; 2. Steel column;

[0041] 3. First side clamp; 31. Limiting part; 311. First through hole; 312. Limiting end; 32. Connecting part; 33. Connecting plate; 34. Clearance notch;

[0042] 4. Second side clamp; 40. Second through hole; 41. Connecting rod; 42. Nut;

[0043] 5. Base plate; 6. Reinforcing structure. Detailed Implementation

[0044] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0045] Example 1:

[0046] like Figures 1-5 As shown in the figure, the connection structure between the steel column and the concrete column in this embodiment has a rectangular cross-section. The connection structure includes a pair of first side clamps 3, a pair of second side clamps 4, a base plate 5, and a connecting rod 41.

[0047] The base plate 5 is welded to the bottom of the steel column 2, and the base plate 5 is in contact with the top end face of the concrete column 1.

[0048] A pair of first side clamps 3 are connected to the base plate 5, corresponding to the two parallel side facades of the concrete column 1. The first side clamps 3 are located on the outside of the side facades and restrict the axial offset of the concrete column 1 and the steel column 2 from the first direction. The first side clamps 3 are provided with a first through hole 311.

[0049] A pair of second side clamps 4 are located below the base plate 5, corresponding to the other two parallel side facades of the concrete column 1. Each second side clamp 4 is provided with a second through hole 40 corresponding to the first through hole 311.

[0050] The connecting rod 41 is inserted into the first through hole 311 and the second through hole 40. Each end of the connecting rod 41 is connected to a second side clamp 4, so that both second side clamps 4 are in contact with the side facade, and restrict the axial displacement of the concrete column 1 and the steel column 2 from the second direction perpendicular to the first direction.

[0051] The number of connecting rods 41 is multiple, the number of first through holes 311 on each first side clamp 3 is two, the number of connecting rods 41 is four, in order to ensure the connection strength, the number of connecting rods 41 needs to be greater than or equal to four, and the connecting rods 41 are symmetrical about the axis of the steel column 2, as shown in Figure 1 .

[0052] When the steel column 2 is added at the upper end of the concrete column 1, the steel column 2 with the bottom plate 5 and the first side clamp 3 installed at the bottom is hoisted to the upper side of the concrete column 1 by using hoisting equipment, the axes of the concrete column 1 and the steel column 2 are aligned, then the steel column 2 is lowered, the bottom plate 5 contacts the top end surface of the concrete column 1, the first side clamp 3 is clamped outside the side surface of the concrete column 1, the assembly gap between the first side clamp 3 and the concrete column 1 is considered and reserved in the design stage, then two second side clamps 4 are installed on the other two sides of the concrete column 1 by using the connecting rods 41, and the second side clamps 4 are in contact with the side surface.

[0053] In the case that the support requirement of the structure above the steel column 2 is low, the assembly gap between the first side clamp 3 and the concrete column 1 can meet the limiting requirement of the axis offset.

[0054] The bottom plate 5 is arranged at the bottom of the steel column 2 as the contact surface of the concrete column 1 and the steel column 2, and two groups of side clamps are installed on the bottom plate 5, the axis offset of the concrete column 1 and the steel column 2 is limited from the outside of the rectangular concrete column 1, the second side clamp 4 is coupled and connected with the first side clamp 3 through the connecting rod 41, the second side clamp 4 is installed after the connecting structure is butt-jointed with the concrete column 1, the second side clamp 4 limits the axis offset of the concrete column 1 and the steel column 2 from two orthogonal directions, the construction difficulty of adding the steel column 2 at the upper end of the concrete column 1 is reduced, and the construction efficiency is improved.

[0055] The connection mode of the two ends of the connecting rod 41 and the second side clamp 4 can be welding, and at the same time the second side clamp 4 can be welded with the bottom plate 5; in addition, the connection mode of the two ends of the connecting rod 41 and the second side clamp 4 can also be connected by using fasteners, and in the case that the support requirement of the structure above the steel column 2 is met, the concrete column 1 and the steel column 2 can be in a detachable connection state after the connection is completed.

[0056] Embodiment two:

[0057] In the connecting structure of the steel column and the concrete column of the embodiment, in order to facilitate the installation of the second side clamp 4 and ensure the limiting effect of the second side clamp 4, the second side clamp 4 is plate-shaped, the second through hole 40 penetrates the second side clamp 4 along the thickness direction of the second side clamp 4, the two ends of the connecting rod 41 are provided with threads, and the two ends of the connecting rod 41 are provided with nuts 42, the nuts 42 are locked to clamp the concrete column 1 between the two second side clamps 4.

[0058] The second side clamping piece 4 is welded with the bottom plate 5.

[0059] When the steel column 2 is added to the upper end of the concrete column 1, the steel column 2 with the bottom plate 5 and the first side clamping piece 3 installed at the bottom is hoisted to the upper side of the concrete column 1 by hoisting equipment, the axes of the concrete column 1 and the steel column 2 are aligned, then the steel column 2 is lowered, the bottom plate 5 contacts the top end surface of the concrete column 1, the first side clamping piece 3 is clamped outside the vertical surface of the concrete column 1, then the connecting rod 41 is passed through the first perforation 311, the second perforation 40 of the second side clamping piece 4 is sleeved on the connecting rod 41 from the end of the connecting rod 41, then the nut 42 is installed to clamp the concrete column 1 between the two second side clamping pieces 4, and the second side clamping piece 4 is welded with the bottom plate 5 under the condition that the axes of the concrete column 1 and the steel column 2 are coincident.

[0060] In order to ensure the fitting effect of the second side clamping piece 4 and the concrete column 1, when the connecting structure is assembled, the nut 42 is locked, the welding of the second side clamping piece 4 and the bottom plate 5 is carried out under the condition that the distance between the two second side clamping pieces 4 is ensured, and the limiting effect of the second side clamping piece 4 is best.

[0061] Embodiment three:

[0062] Based on the first embodiment or the second embodiment, in the connecting structure of the steel column and the concrete column of the embodiment, the first side clamping piece 3 comprises a limiting part 31 located below the bottom plate 5, the limiting part 31 is welded with the bottom plate 5, the first perforation 311 is located on the limiting part 31, and the limiting part 31 is used for limiting the axis offset of the concrete column 1 and the steel column 2.

[0063] The first side clamping piece 3 further comprises a connecting part 32 located above the bottom plate 5, and the bottom plate 5 and the steel column 2 are welded with the connecting part 32.

[0064] As shown in Figure 3 , Figure 6 , the first side clamping piece 3 comprises two clamping plates, the two clamping plates are parallel to each other and are arranged at intervals, one end of the length direction of the clamping plate is the connecting part 32, the other end of the length direction of the clamping plate is the limiting part 31, and the middle part of the clamping plate is a avoiding gap 34 welded with the bottom plate 5.

[0065] After the first side clamping piece 3 spans the bottom plate 5, the connecting part 32 and the limiting part 31 respectively provide lateral support force to the steel column 2 and the concrete column 1 from the axis side of the column, so as to ensure the strength of the connecting structure, the first side clamping piece 3 is formed after the clamping plate is connected with the bottom plate 5, and the assembly of the first side clamping piece 3 and the steel column 2 is facilitated.

[0066] As shown in Figure 3 , a connecting plate 33 is arranged between the two clamping plates, and the connecting plate 33 is used for connecting the two clamping plates.

[0067] As shown in Figure 5As shown, a limiting end 312 is provided on the side of the limiting part 31 facing the corresponding side facade. The plane of the limiting end 312 facing the side facade is parallel to the side facade. The limiting end 312 can be the end face of the card plate, such as... Figure 4 , Figure 6 As shown.

[0068] After the steel column 2 is connected to the concrete column 1, the limiting end 312 is in contact with the side facade or has an assembly gap. The assembly gap can be controlled within a reasonable range.

[0069] Example 4:

[0070] To make the connection structure between the steel column 2 and the concrete column 1 more stable, and to ensure that the limiting end 312 is in close contact with the side facade, unlike the above embodiment, as follows: Figures 7-9 As shown, in the connection structure between the steel column 2 and the concrete column 1 in this embodiment, the limiting part 31 is provided with a limiting end 312 facing the corresponding side facade. The limiting end 312 contacts the corresponding side facade and restricts the axial displacement of the concrete column 1 and the steel column 2 from the first direction.

[0071] The limiting end 312 is an insert plate with a first inclined surface. The limiting part 31 is provided with a second inclined surface. The second inclined surface and the side facade form an opening that is away from the steel column 2. The limiting end 312 is inserted into the opening. When the first inclined surface and the second inclined surface are in contact, the limiting end 312 is in contact with the corresponding side facade. The limiting end 312 is fixed to the limiting part 31 after being welded to the connecting plate 33.

[0072] The first side clamp 3 is partially welded to the steel column 2 in advance. After the steel column 2 is initially in place, the wedge-shaped limiting end 312 is installed, and the first side clamp 3 is welded as a whole to make the limiting end 312 fit with the side facade and ensure a good limiting effect.

[0073] Furthermore, such as Figure 2 , Figure 3 , Figure 10 As shown, it also includes a reinforcing structure 6, which connects the side of the steel column 2 to the top surface of the base plate 5.

[0074] In one specific embodiment, the steel column 2 is an I-beam structure, and the reinforcing structure 6 is located above the second side clamp 4. The reinforcing structure 6 is plate-shaped and connects the base plate 5 and the flange of the I-beam.

[0075] When adding a steel column 2 to the top of the concrete column 1:

[0076] First, weld the base plate 5 to the bottom of the steel column 2, then clamp the clearance notch 34 of the clamping plate onto the base plate 5, so that the connecting part 32 and the limiting part 31 are located on both sides of the base plate 5 respectively. Weld the base plate 5, the steel column 2 and the clamping plate, and weld the connecting plate 33 to the clamping plate. Weld the side of the steel column 2 and the base plate 5 to the reinforcing structure 6.

[0077] Then, the steel column 2 is hoisted to the upper side of the concrete column 1 by hoisting equipment, the axes of the concrete column 1 and the steel column 2 are aligned, the steel column 2 is lowered, the bottom plate 5 is in contact with the top end surface of the concrete column 1, the limiting part 31 is outside the side surface of the concrete column 1, the second inclined surface on the limiting part 31 and the side surface form an opening facing away from the socket of the steel column 2, the limiting end 312 is inserted into the opening, the limiting end 312 is in contact with the corresponding side surface when the first inclined surface of the limiting end 312 is in contact with the second inclined surface, and then the limiting end 312 is welded with the limiting part 31;

[0078] Finally, the connecting rod 41 is inserted into the first perforation 311, the second perforation 40 of the second side clamp 4 is sleeved on the connecting rod 41 from the end of the connecting rod 41, and then the nut 42 is installed to clamp the concrete column 1 between the two second side clamps 4, and the second side clamp 4 is welded with the bottom plate 5 under the condition that the axes of the concrete column 1 and the steel column 2 are coincident.

[0079] The above description is an explanation of the utility model, not a limitation of the utility model, the scope defined by the utility model is referred to the claims, and any form of modification can be made within the protection scope of the utility model.

Claims

1. A connection structure between a steel column and a concrete column, characterized in that: The cross section of the concrete column (1) is rectangular, and the connecting structure comprises: a bottom plate (5) welded to the bottom of the steel column (2), the bottom plate (5) being in contact with the top end surface of the concrete column (1); a pair of first side clamps (3) connected with the bottom plate (5) and corresponding to two mutually parallel side surfaces of the concrete column (1), the first side clamps (3) being located outside the side surfaces and limiting the axis offset of the concrete column (1) and the steel column (2) from a first direction, the first side clamps (3) being provided with first through holes (311); a pair of second side clamps (4) located below the bottom plate (5) and corresponding to the other two mutually parallel side surfaces of the concrete column (1), each second side clamp (4) being provided with a second through hole (40) corresponding to the first through hole (311); a connecting rod (41) penetrating the first through hole (311) and the second through hole (40), the two ends of the connecting rod (41) being connected with a second side clamp (4) respectively, so that the two second side clamps (4) are in contact with the side surfaces and limit the axis offset of the concrete column (1) and the steel column (2) from a second direction perpendicular to the first direction.

2. The steel column-to-concrete column connection of claim 1, wherein: The second side clamps (4) are plate-shaped, the second through holes (40) penetrating the second side clamps (4) along the thickness direction of the second side clamps (4), the two ends of the connecting rod (41) being provided with threads, and the two ends of the connecting rod (41) being provided with nuts (42), the concrete column (1) being clamped between the two second side clamps (4) after the nuts (42) are locked.

3. The steel column and concrete column connection of claim 1 or 2, wherein: The second side clamps (4) are welded to the bottom plate (5).

4. The steel column-to-concrete column connection of claim 1, wherein: The first side clamps (3) comprise limiting portions (31) located below the bottom plate (5), the limiting portions (31) being welded to the bottom plate (5), the first through holes (311) being located on the limiting portions (31), and the limiting portions (31) being used for limiting the axis offset of the concrete column (1) and the steel column (2).

5. The steel column-to-concrete column connection of claim 4, wherein: The first side clamps (3) further comprise connecting portions (32) located above the bottom plate (5), the bottom plate (5) and the steel column (2) being welded to the connecting portions (32).

6. The steel column-to-concrete column connection of claim 5, wherein: The first side clamps (3) comprise two pieces of clamping plates, the two pieces of clamping plates being parallel to and spaced from each other, one end of the length direction of the clamping plate being the connecting portion (32), the other end of the length direction of the clamping plate being the limiting portion (31), and the middle part of the clamping plate being an avoiding gap (34) welded to the bottom plate (5).

7. The steel column-to-concrete column connection of claim 6, wherein: A connecting plate (33) is arranged between the two pieces of clamping plates, and the connecting plate (33) is used for connecting the two pieces of clamping plates.

8. The steel column-to-concrete column connection of claim 7, wherein: The limiting portion (31) is provided with a limiting end (312) on the side facing the corresponding side surface, the limiting end (312) being in contact with the corresponding side surface and limiting the axis offset of the concrete column (1) and the steel column (2) from the first direction.

9. The steel column-to-concrete column connection of claim 8, wherein: The limiting end (312) is an insertion plate with a first inclined surface, a second inclined surface is arranged on the limiting part (31), and an opening is formed between the second inclined surface and the side vertical surface, the opening is away from the insertion hole of the steel column (2), the limiting end (312) is inserted into the insertion hole, the first inclined surface is in contact with the second inclined surface, the limiting end (312) is in contact with the corresponding side vertical surface, and the limiting end (312) is fixed on the limiting part (31) after being welded with the connecting plate (33).

10. The steel column-to-concrete column connection of claim 1, wherein: The reinforcing structure (6) is further arranged, and the reinforcing structure (6) is connected with the side surface of the steel column (2) and the top surface of the bottom plate (5).

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