Steel pipe concrete composite column and construction process thereof

Abstract

The present application relates to a kind of steel pipe concrete composite column, including the steel pipe body filled with concrete inside, bottom baffle with intermediate hole is welded at the bottom end of the steel pipe body, column bottom flange is provided outside the bottom baffle, the steel pipe body includes bottom pipe, middle pipe, node pipe and top pipe sequentially arranged from bottom to top, auxiliary assembly is arranged inside the bottom pipe, middle pipe, node pipe and top pipe, node assembly is also provided in the node pipe.The steel pipe body of the multi-section structure of the present application can be more conveniently assembled and produced, and is beneficial to assembly and use, in the process of filling concrete, manual following vibration at feeding opening can be avoided, auxiliary assembly can transmit vibration to the center position of steel pipe body, can reduce the vibration time, speed up construction efficiency, and vertical rib can also enhance the overall strength of steel pipe concrete composite column.

Description

TECHNICAL FIELD

[0001] The application relates to a steel pipe concrete composite column and a construction process thereof. BACKGROUND

[0002] The steel pipe concrete composite column is a special structural column, which is widely used in building construction. The stability of the steel pipe is enhanced by the supporting action of the filled concrete. At the same time, the filled concrete is subjected to the constraint action of the steel pipe, so that the core concrete is in a three-way compressive stress state, the time for the longitudinal micro-cracks in the concrete to generate and develop is delayed, so that the core concrete has stronger compressive strength and deformation resistance, and the overall stability and bearing capacity are used in the structures of high-rise buildings, highway bridges and factory buildings.

[0003] For example, a combined steel pipe concrete column is disclosed in Chinese patent document CN114809451A, which relates to the field of building engineering. The combined steel pipe concrete column comprises an outer steel column arranged in a hollow manner, an inner steel column arranged in a hollow manner in the outer steel column, a first concrete layer poured between the outer steel column and the inner steel column, and a second concrete layer poured in the inner steel column. The application helps to improve the structural strength of the combined steel pipe concrete column.

[0004] However, the greater the layer spacing is in the building construction process, the higher the requirements for the bearing capacity, uplift resistance and stability of the composite column are. The traditional composite column lacks corresponding optimization in structure, and some composite columns are difficult to be vibrated at the top of the steel pipe during pouring due to site restrictions, especially when the diameter of the steel pipe is small. The traditional external vibration effect is poor, and too many air bubbles are easily left in the steel pipe, which affects the strength and other properties of the composite column. Enlarging the diameter of the steel pipe and the steel pipe column foot structure is too wasteful of resources, thus causing low efficiency and slow progress of the construction process. Therefore, the present application is proposed. SUMMARY

[0005] The present application improves the above problems, that is, the present application provides a steel pipe concrete composite column and a construction process thereof. The multi-section steel pipe body can be more conveniently assembled and produced, and is beneficial to assembly and use. The hoisting equipment can quickly hoist and transfer. In the process of filling concrete, manual following vibration at the feeding port can be avoided, and air bubbles in the concrete can be better released by external vibration. The auxiliary assembly can transmit vibration to the center position of the steel pipe body, which can reduce the vibration time and speed up the construction efficiency. The vertical rib can also enhance the overall strength of the steel pipe concrete composite column, and the diameter of the steel pipe body does not have to be increased for convenient construction.

[0006] The application is constructed as follows, it includes a steel pipe body filled with concrete, a bottom baffle with a middle hole is welded at the bottom end of the steel pipe body, a column bottom flange is arranged outside the bottom baffle, the steel pipe body includes a bottom pipe, a middle pipe, a node pipe and a top pipe arranged in sequence from bottom to top, auxiliary assemblies are arranged inside the bottom pipe, the middle pipe, the node pipe and the top pipe, and a node assembly is further arranged in the node pipe.

[0007] Further, the auxiliary assembly includes a connecting plate fixed on the inner wall of the steel pipe body, the connecting plate extends to the central axis of the steel pipe body, and an arc-shaped plate is fixed on the connecting plate, and opposite hooks are arranged on both sides of the arc-shaped plate.

[0008] Further, opposite hooks are arranged on the arc-shaped plate, and vertical ribs are embedded in the opposite hooks, the vertical ribs embedded in adjacent opposite hooks are fixed by iron wires, the fixing points of the iron wires are above the opposite hooks, the bottom ends of the vertical ribs extend downward and pass through the bottom baffle at the bottom of the steel pipe body, and reverse bends are arranged at the bottom ends of the vertical ribs.

[0009] Further, the top ends of the vertical ribs extend into the top pipe, at least two auxiliary assemblies are arranged in the bottom pipe, the middle pipe, the node pipe and the top pipe, and the top ends of the vertical ribs are below the bottom of the uppermost auxiliary assembly.

[0010] Further, according to the steel pipe concrete composite column of claim 1, the node assembly includes a cross beam plate, an inner lining pipe is fixed on the inner wall of the node pipe, the cross beam plate penetrates the node pipe and the inner lining pipe, and fixing members are welded between the cross beam plates, mounting threaded holes are arranged on the fixing members and the node pipe, and the fixing members are fixed on the node pipe by fixing bolts.

[0011] Further, the fixing member includes an expansion plate, the expansion plate is fixed on the upper surface of the cross beam plate, stress plates are fixed on the expansion plate and the side wall of the cross beam plate, and the mounting threaded holes are arranged on the stress plates.

[0012] Further, an ear plate is fixed on the side wall of the top pipe, a lifting hole and a temporary fixing hole are arranged on the ear plate.

[0013] Further, the bottom pipe, the middle pipe, the node pipe and the top pipe are sequentially stacked and fixed by welding at the ports.

[0014] Further, a construction process of a steel pipe concrete composite column includes the following steps:

[0015] S1: set up a column foot pile at the erection site, reserve an installation groove with the same shape as the bottom pipe section on the column foot pile, also reserve an installation bottom cavity in the installation groove, and embed a steel ring fender plate in the installation groove;

[0016] S2: hoist the steel pipe body to the installation position in a hoisting manner, align the column bottom flange plate with the steel ring fender plate, place the steel pipe body on the steel ring fender plate, and then fix the position by using bolts;

[0017] S3: carry out concrete filling of the installation groove to form an annular seat that is at least 20 cm higher than the column bottom flange plate, and then carry out concrete filling by using an external concrete hopper, align the hopper above the steel pipe body and then start filling;

[0018] S4: during filling, adopt quantitative and split filling, and after each filling is completed, carry out external vibration of the outer wall of the steel pipe body by using external vibration equipment to discharge air bubbles in the concrete;

[0019] S5: when it is necessary to continue to increase the number of layers, hoist again repeatedly, but the vertical ribs in the steel pipe body that is increased in height need to be hooked on the arc-shaped plates in the corresponding top pipe, then the steel pipe body is welded and fixed, the vertical ribs are buried by pouring concrete again, and then split concrete filling and external following vibration can be carried out.

[0020] Compared with the prior art, the multi-section steel pipe body of the present application can be more conveniently assembled and produced, is beneficial to assembly and use, can be quickly hoisted and transferred by using hoisting equipment, can avoid manual following vibration at the filling opening during concrete filling, can better release air bubbles in the concrete by directly using external vibration, the auxiliary assembly can transmit vibration to the center position of the steel pipe body, can reduce vibration time and accelerate construction efficiency, and the vertical ribs can enhance the overall strength of the steel pipe concrete composite column, so that convenient construction can be carried out without increasing the diameter of the steel pipe body. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0022] Figure 2 is a schematic view of the bottom baffle from below of the present application;

[0023] Figure 3 is a schematic view of the node pipe structure of the present application;

[0024] Figure 4 is a schematic view of the auxiliary assembly structure of the present application;

[0025] Figure 5The schematic view of the node assembly installation structure of the present application;

[0026] Figure 6 The schematic view of the node assembly structure of the present application;

[0027] Figure 7 The schematic view of the node assembly from above of the present application;

[0028] Figure 8 The schematic view of the column foot structure of the present application;

[0029] Figure 9 The schematic of the construction process of the present application;

[0030] In the figure: 1, steel pipe body; 101, bottom pipe; 102, middle section pipe; 103, node pipe; 104, top pipe; 2, bottom baffle; 3, column bottom flange plate; 4, auxiliary assembly; 401, connecting plate; 402, arc plate; 403, reverse hook piece; 404, vertical rib; 5, node assembly; 501, cross beam plate; 502, inner lining pipe; 503, fixing piece; 5031, expansion plate; 5032, stress plate. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0032] Embodiment: refer to the drawings Figures 1-8 As shown, a steel pipe concrete composite column is provided, which comprises a steel pipe body 1, the steel pipe body 1 is filled with concrete, a bottom baffle 2 is welded at the bottom end of the steel pipe body 1, the bottom baffle 2 and the steel pipe body 1 are integrated, which can enhance the stability and overall strength of the steel pipe body 1, and in order to further improve the lateral force resistance, a plurality of baffles with the same structure as the bottom baffle 2 can be arranged on the inner wall of the steel pipe body 1, the bottom baffle 2 is provided with an intermediate hole, a column bottom flange plate 3 is fixed at the bottom of the steel pipe body 1, an auxiliary assembly 4 is fixed on the inner wall of the steel pipe body 1, which is used to transmit external vibration force to the inside of the steel pipe body 1, during the pouring process of the steel pipe concrete, the concrete is filled into the steel pipe and vibrated to be compacted, which is to make the steel pipe and the concrete work together to improve their load-carrying capacity and seismic performance, during pouring, the existing vibration mode is to use a vibrating rod to vibrate at the pouring opening, but this mode still needs manual operation at the inlet, which is very inconvenient, the steel pipe body 1 comprises a bottom pipe 101, a middle section pipe 102, a node pipe 103 and a top pipe 104, the bottom pipe 101, the middle section pipe 102, the node pipe 103 and the top pipe 104 are stacked in sequence and the ports are welded and fixed to each other, the multi-section structure can facilitate the processing personnel to process the inside of the steel pipe body 1, the node pipe 103 is provided with a node assembly 5, the node assembly 5 is a support node of a building layer, which can provide support to the outside.

[0033] The side wall of the top pipe 104 is fixed with an ear plate, and the ear plate is provided with a lifting hole and a temporary fixing hole. When the steel pipe body 1 is stacked and fixed, the column bottom flange plate 3 at the bottom of the upper steel pipe body 1 needs to be replaced and the corresponding ear plate at the lower position. The fixing hole needs to be matched with the external temporary clamping plate for use, or the welding method is used for preliminary fixing, so that the steel pipe body 1 can be lifted and the steel pipe body 1 can be temporarily fixed in position. When in use, the lifting rope of the lifting equipment is inserted through the lifting hole of the ear plate, and then the steel pipe body 1 is lifted and moved to another position.

[0034] The auxiliary assembly 4 comprises a connecting plate 401 fixed on the inner wall of the steel pipe body 1, the connecting plate 401 extends to the center axis of the steel pipe body 1, and an arc-shaped plate 402 is fixed on the connecting plate 401. The two sides of the arc-shaped plate 402 are provided with reverse hook pieces 403, so that the vibration can be transmitted. The reverse hook pieces 403 are each provided with a side embedding opening, and a vertical rib 404 is embedded in the side embedding opening. The vertical ribs 404 embedded in adjacent side embedding openings are fixed by iron wires, and the binding points of the iron wires are located above the reverse hook pieces 403. The bottom end of the vertical rib 404 extends downward and penetrates through the bottom baffle 2 at the bottom of the steel pipe body 1. The bottom end of the vertical rib 404 is provided with a reverse bend, so that the internal strength of the steel pipe body 1 can be improved. The top end of the vertical rib 404 extends into the top pipe 104. There are at least two auxiliary assemblies 4 in the bottom pipe 101, the middle pipe 102, the node pipe 103 and the top pipe 104, and the top end of the vertical rib 404 is located below the bottom of the uppermost auxiliary assembly 4. Therefore, the concrete in the steel pipe body 1 can be vibrated and exhausted. When the concrete is poured in batches, the concrete is filled in the steel pipe body 1 and contains bubbles. At this time, the corresponding auxiliary assembly 4 needs to be vibrated outside. The vibration is transmitted to the arc-shaped plate 402 through the connecting plate 401, so that the concrete in the steel pipe body 1 is vibrated and treated. The vertical rib 404 can improve the adhesion of the concrete after the concrete is solidified, so that the concrete can bear higher load pressure.

[0035] The node assembly 5 comprises beam plates 501, inner lining pipes 502 fixed on the inner walls of the node pipes 103, the beam plates 501 penetrating through the node pipes 103 and the inner lining pipes 502, and fixing members 503 welded between the beam plates 501, the fixing members 503 and the node pipes 103 being provided with mounting threaded holes, and the fixing members 503 being fixed to the node pipes 103 by fixing bolts, so that the load bearing capacity and the lateral force resistance of the node can be improved, the fixing members 503 comprising extension plates 5031 fixed to the upper surfaces of the beam plates 501, and stress plates 5032 fixed to the side walls of the beam plates 501 and the extension plates 5031, the mounting threaded holes being formed in the stress plates 5032, so that the force transmission can be facilitated and the load bearing capacity of the beam plates 501 can be improved, when the node assembly 5 is arranged, the node assembly 5 needs to be first installed in the node pipe 103, and then the steel pipe body 1 is assembled, specifically, side openings through which the beam plates 501 pass need to be formed on the walls of the node pipe 103 and the inner lining pipe 502, and then the beam plates 501 are penetrated, since the beam plates 501 in two directions have overlapping parts, a butt joint clamping groove needs to be formed on the beam plates 501 in advance, and the side openings through which the beam plates 501 pass are vertically extended, then the beam plates 501 are inserted and overlapped and clamped, after the beam plates 501 in two directions are placed, the beam plates 501, the node pipe 103 and the inner lining pipe 502 can be welded and fixed according to requirements, then the fixing members 503 are welded and assembled, specifically, the extension plates 5031 are welded to the beam plates 501, the parts close to the node pipe 103 of the extension plates 5031 also need to be welded, then the stress plates 5032 are welded, and finally the stress plates 5032 are fixed and connected by using bolts, so that the node assembly 5 can stably provide load support due to the beam plates 501 clamped with each other and the inner lining pipe 502 capable of providing good lateral force resistance and the external fixing members 503.

[0036] A construction process of a steel pipe concrete composite column, comprising:

[0037] S1: setting a column foot pile at an erection site, reserving an installation groove with the same cross-sectional shape as the bottom pipe 101 on the column foot pile, the installation groove being used for placing the steel pipe body 1, and reserving an installation bottom cavity in the installation groove, the installation bottom cavity being used for accommodating a vertical rib 404, the vertical rib 404 being fixed after being poured into concrete, and embedding a steel ring backing plate in the installation groove, installation holes being formed on the steel ring backing plate corresponding to the column bottom flange plate 3;

[0038] S2: hoisting the steel pipe body 1 to an installation position by using a hoisting method, specifically, hoisting and transferring the steel pipe body 1 by using a hoisting rope through an ear plate, aligning the column bottom flange plate 3 with the steel ring backing plate, placing the steel pipe body 1 on the steel ring backing plate, and then fixing the position by using bolts, the position being adjusted, for example, the verticality being adjusted, during the fixing;

[0039] S3: The concrete is filled in the installation groove to form an annular seat which is at least 20 cm higher than the flange plate at the bottom of the column, the annular seat can enhance the stability of the bottom of the steel pipe body 1 and can isolate the external environment, then the concrete is filled by using an external concrete hopper, the hopper is aligned above the steel pipe body 1 and then the filling is started;

[0040] S4: During the filling, the filling is carried out in batches, when the filling is carried out, the inner diameter of the steel pipe body 1 is calculated, the middle part of the new layer is ensured to have a corresponding auxiliary assembly 4 after each filling, after each filling is completed, the external vibration equipment is used to vibrate the outer wall of the steel pipe body 1, then the external vibration equipment is placed beside the corresponding auxiliary assembly 4, and then the horizontal movement is carried out around the outer wall of the steel pipe body 1, so that the bubbles in the concrete are better discharged.

[0041] S5: When the number of layers needs to be increased, the hoisting is repeated again, but the vertical ribs 404 in the increased steel pipe body 1 need to be hooked on the arc-shaped plates 402 in the corresponding top pipes 104, the vertical ribs 404 in the upper layer are pushed down, a gap allowing the vertical ribs 404 to pass through is left on the path of the bottom end of the vertical ribs 404, then after the reverse bend at the bottom end of the vertical ribs 404 moves to the bottom of the corresponding arc-shaped plate 402, the vertical ribs 404 are twisted and then pulled to be hooked on the corresponding arc-shaped plate 402, then the vertical ribs 404 are bundled by using the iron wire, after the operation is completed, the steel pipe body 1 is welded and fixed, the vertical ribs 404 are buried by pouring concrete again, and then the concrete filling and external following vibration are carried out in batches.

[0042] In use, the steel pipe body 1 with the multi-section structure can be more conveniently assembled and produced, and is beneficial to assembly and use, can be quickly hoisted and transferred by using hoisting equipment, specifically, the hoisting rope of the hoisting equipment is passed through the hoisting hole in the lug plate, then the steel pipe body 1 is lifted up, and then the main pipe is transferred to the installation position for adjustment and fixation, when the concrete is filled, the concrete is added in batches, in the process of filling the concrete, in order to avoid manual following vibration at the feeding opening, the bubbles in the concrete are directly released by using external vibration, the auxiliary assembly 4 can transmit the vibration to the center position of the steel pipe body 1, the vibration time is reduced, and the construction efficiency is improved, specifically, when the concrete is poured in batches, the concrete is filled in the steel pipe body 1 and is mixed with bubbles, at this time, the arc-shaped plate 402 is vibrated outside the corresponding auxiliary assembly 4, the vibration is transmitted to the arc-shaped plate 402 through the connecting plate 401, so that the concrete in the steel pipe body 1 is vibrated and treated, and the vertical ribs 404 can improve the adhesion of the concrete after the concrete is solidified, so that the concrete can bear higher load pressure, and the vertical ribs 404 can also enhance the overall strength of the steel pipe concrete composite column, so that the diameter of the steel pipe body 1 does not need to be increased to facilitate the construction.

[0043] Any technical solution disclosed in the present application, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range, any person skilled in the art should understand that the preferred numerical range is only one of the many implementable values with more obvious technical effects or representative values. Because there are too many values to enumerate, the present application discloses some values to illustrate the technical solutions of the present application, and the above enumerated values should not constitute a limitation on the protection scope of the present application.

[0044] If the words "first", "second" and the like are used herein to limit parts, those skilled in the art should know that "first", "second" are used only for the convenience of description to distinguish the parts, and the above words have no special meaning unless otherwise stated.

[0045] Meanwhile, the above-mentioned application if disclosed or involved in the mutually fixed connection of parts or structural parts, unless otherwise stated, the fixed connection can be understood as: detachable fixed connection (for example, using bolt or screw connection), but also can be understood as: non-detachable fixed connection (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by an integral structure (for example, using casting process integral forming manufacturing) (obviously, except for the integral forming process).

[0046] In addition, the above-mentioned application of any technical solution disclosed in the present application applies to the terms used to represent the position relationship or shape, unless otherwise stated, its meaning includes the approximate, similar or close state or shape.

[0047] Any component provided by the present application can be assembled from a plurality of individual components, or it can be a single component manufactured by integral forming process.

[0048] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application and not to limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A steel pipe concrete composite column comprising a steel pipe body (1) filled with concrete inside, a bottom baffle (2) with a middle hole welded at the bottom end of the steel pipe body, and a column bottom flange plate (3) provided outside the bottom baffle, characterized in that: The steel pipe body (1) comprises a bottom pipe (101), a middle pipe (102), a node pipe (103) and a top pipe (104) connected in sequence from bottom to top, and the bottom pipe, the middle pipe, the node pipe and the top pipe are internally provided with auxiliary assemblies (4), and the node pipe is further provided with a node assembly (5) inside; The auxiliary assembly (4) comprises a connecting plate (401) fixed on the inner wall of the steel pipe body (1), the connecting plate (401) extends to the central axis of the steel pipe body (1), and an arc-shaped plate (402) is fixed on the connecting plate (401), and both sides of the arc-shaped plate (402) are provided with reverse hook pieces (403); The reverse hook piece (403) is provided with a side insertion opening, the side insertion opening is embedded with a vertical rib (404), and the vertical ribs (404) embedded in adjacent side insertion openings are fixed by iron wires, the binding point of the iron wire is located above the reverse hook piece (403), the bottom end of the vertical rib (404) extends downward and penetrates through the bottom baffle (2) at the bottom of the steel pipe body (1), and the bottom end of the vertical rib (404) is provided with a reverse elbow; The top end of the vertical rib (404) extends into the top pipe (104), at least two auxiliary assemblies (4) are arranged in the bottom pipe (101), the middle pipe (102), the node pipe (103) and the top pipe (104), and the top end of the vertical rib (404) is located below the bottom of the uppermost auxiliary assembly (4); The node assembly (5) comprises a cross beam plate (501), an inner lining pipe (502) is fixed on the inner wall of the node pipe (103), the cross beam plate (501) penetrates through the node pipe (103) and the inner lining pipe (502), and a fixing piece (503) is welded between the cross beam plates (501), the fixing piece (503) and the node pipe (103) are both provided with mounting threaded holes, and the fixing piece (503) is fixed to the node pipe (103) by fixing bolts.

2. The concrete filled steel tube column according to claim 1, wherein: The fixing piece (503) comprises an expansion plate (5031) fixed on the upper surface of the cross beam plate (501), and stress plates (5032) are fixed on the side walls of the expansion plate (5031) and the cross beam plate (501).

3. The concrete filled steel tube column assembly according to claim 1, wherein: An ear plate is fixed on the side wall of the top pipe (104), and a lifting hole and a temporary fixing hole are formed in the ear plate.

4. The concrete filled steel tube column assembly according to claim 1, wherein: The bottom pipe (101), the middle pipe (102), the node pipe (103) and the top pipe (104) are sequentially stacked and port-welded.

5. A construction process using the steel pipe concrete composite column according to claim 1, characterized by, The method comprises the following steps: S1: setting a column foot pile at the erection site, reserving an installation slot with the same cross-sectional shape as the bottom pipe (101) on the column foot pile, reserving an installation bottom cavity in the installation slot, and embedding a steel ring fender plate in the installation slot; S2: The steel pipe body (1) is hoisted to the installation position by hoisting, the column bottom flange plate (3) is aligned with the steel ring pad plate, the steel pipe body (1) is placed on the steel ring pad plate, and then the position is fixed by using bolts; S3: The installation groove is filled with concrete to form a ring-shaped seat which is at least 20 cm higher than the column bottom flange plate (3), and then an external concrete hopper is used for concrete filling, the hopper is aligned above the steel pipe body (1), and then the filling is started; S4: During filling, the filling is carried out in batches, after each filling is completed, external vibration equipment is used to vibrate the outer wall of the steel pipe body (1), and air bubbles in the concrete are discharged; S5: When it is necessary to continue to increase the number of layers, hoisting is repeated again, but the vertical ribs (404) in the steel pipe body (1) to be increased need to be hooked on the arc-shaped plates (402) in the corresponding top pipes (104), then the steel pipe body (1) is welded and fixed, the vertical ribs (404) are buried by pouring concrete again, and then concrete filling and external following vibration are carried out in batches.

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