Asphalt pavement steel column foundation node and construction method

Abstract

The present application relates to the technical field of building construction, in particular to a kind of asphalt pavement steel column foundation node and construction method, including bearing stratum, the asphalt concrete pavement is laid on the bearing stratum, it is characterized in that: still include installation mechanism, support mechanism and tamping mechanism, installation mechanism is set on the bearing stratum and asphalt concrete pavement, support mechanism is set on the installation mechanism, tamping mechanism is set on the limiting component;The present application is connected by the expansion bolt through column foot steel plate and asphalt concrete pavement and bearing stratum, steel column body and column foot steel plate are welded connection, along the long side direction of steel column body welds two angle steels, angle steel welding position is preferably the intermediate position of concrete foundation height, set up formwork and pours concrete foundation, before pouring, drive short steel bar into asphalt concrete pavement, while reducing cost, the bearing capacity and overall stability of steel column can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a steel column foundation node for asphalt pavement and its construction method. Background Technology

[0002] During the construction of building structures, steel columns are mainly used in temporary building structures as load-bearing components to transfer vertical loads. The foundation is generally a reinforced concrete foundation to meet the bearing capacity and stability requirements of the steel column foundation.

[0003] Chinese patent CN211286042U discloses a waterproof joint for a steel column, comprising a steel column with crossbeam steel plates on both sides. An integral connecting plate is fixed to one end of each crossbeam steel plate, and the connecting plate is bolted to the steel column. Rain shelters are provided on the upper and lower ends of the crossbeam steel plates on the surface of the steel column. Each rain shelter consists of a water-stop steel ring and two semi-circular rings. The water-stop steel ring is fitted onto the surface of the steel column and is fixedly welded to it. Each semi-circular ring consists of a semi-circular plate and a semi-circular plate, with the semi-circular plate fixedly welded to the inner surface of the semi-circular plate. This patent has a simple structure, is easy to disassemble and install, and the rain shelters prevent rainwater from entering the gap between the connecting plate and the steel column, effectively preventing erosion and improving the stability of the connection between the crossbeam steel plate and the steel column.

[0004] However, the above-mentioned patents have the following shortcomings: due to the limited space in the construction site, some temporary buildings need to be placed on the asphalt concrete road outside the site. The asphalt road has poor strength and is prone to softening under the influence of high temperature, which cannot meet the requirements of the steel column bearing capacity and stability.

[0005] Therefore, the present invention provides a steel column foundation node for asphalt pavement and a construction method thereof. Summary of the Invention

[0006] The purpose of this invention is to provide a steel column foundation node for asphalt pavement and a construction method therefor, so as to solve the problems mentioned in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an asphalt pavement steel column foundation node, including a bearing layer, on which an asphalt concrete pavement is laid, and also including an installation mechanism, a support mechanism and a compaction mechanism;

[0008] The installation mechanism is set on the bearing layer and the asphalt concrete pavement. The installation mechanism includes two sets of expansion bolts threaded through the bearing layer and the asphalt concrete pavement. Each set of expansion bolts is fixedly installed with a column base steel plate that fits into the asphalt concrete pavement. A steel column body is fixedly installed on the column base steel plate. A concrete foundation fixed to the steel column body is poured on the asphalt concrete pavement. A reinforcement component is set between the asphalt concrete pavement and the concrete foundation.

[0009] A support mechanism is mounted on the installation mechanism. The support mechanism includes a casting component mounted on a concrete foundation. A limit component is mounted on the casting component.

[0010] The compaction mechanism is disposed on the limiting component, and the compaction mechanism includes a movable component disposed on the limiting component, and a compaction component is disposed on the movable component.

[0011] Furthermore, the reinforcement component includes two angle steels fixedly installed between the two steel column bodies, and short steel bars are fixedly installed between the asphalt concrete pavement and the concrete foundation.

[0012] Furthermore, the casting assembly includes two symmetrically sliding support template shells mounted on the concrete foundation, with a plurality of first fixing bolts threaded together between the two support template shells.

[0013] Furthermore, the limiting component includes two connecting frames that are respectively fixedly installed on two supporting template shells. Each connecting frame is fixedly installed with a supporting shell. Each supporting shell is threaded with a plurality of second fixing bolts. Each supporting shell is fixedly installed with another supporting shell through the plurality of second fixing bolts.

[0014] Furthermore, each pair of support shells can be fitted together to fit the steel column body.

[0015] Furthermore, the movable component includes a connecting plate fixedly installed between two support shells, a threaded sleeve fixedly installed on the connecting plate, and a threaded rod threadedly installed on the threaded sleeve.

[0016] Furthermore, the compaction assembly includes a fixed shell rotatably connected to the threaded rod, a pressure plate adapted to the support template shell is fixedly installed on the fixed shell, and two side rods slidably connected to the connecting plate are fixedly installed on the pressure plate.

[0017] A construction method for steel column foundation joints in asphalt pavement includes the following steps:

[0018] S1. Expansion bolts pass through the column base steel plate and connect to the asphalt concrete pavement and bearing layer. The steel column body is welded to the column base steel plate. Two angle steels are welded along the long side of the steel column. The angle steel welding position should be in the middle of the concrete foundation height. Short steel bars are driven into the asphalt concrete pavement before pouring.

[0019] S2. Place the two support template shells on the asphalt concrete pavement and fix them with the first fixing bolt, so that one of the support shells fixed to the connecting frame can fit against the steel column body. Fix the two support shells with the second fixing bolt, so that the two support shells can cooperate with each other to reinforce and support the steel column body.

[0020] S3. By pouring concrete into the formwork shell, and by turning the threaded rod, the threaded rod can move the pressure plate through the fixed shell using the threaded action with the threaded sleeve. The pressure plate can then move the side rod, allowing the pressure plate to move into the inner side of the formwork shell to compact the concrete. Then, the pressure plate is moved upward to add more concrete, and the pressure plate is moved downward to continue compacting. This process is repeated to increase the density of the concrete and allow it to solidify into a more stable concrete foundation.

[0021] S4. After construction is completed, the formwork shell and support shell are dismantled by removing the first and second fixing bolts.

[0022] The beneficial effects of this invention are:

[0023] (1) In this invention, expansion bolts are passed through the column base steel plate to connect with the asphalt concrete pavement and the bearing layer. The steel column body is welded to the column base steel plate. Two angle steels are welded along the long side of the steel column body. The angle steel welding position should be the middle position of the concrete foundation height. The formwork is erected and the concrete foundation is poured. Short steel bars are driven into the asphalt concrete pavement before pouring. While reducing costs, it can effectively improve the bearing capacity and overall stability of the steel column. It also solves the problem of uneven settlement caused by the softening of the asphalt pavement under high temperature. Moreover, the construction is simple and the adaptability is strong.

[0024] (2) The present invention places two support template shells on the asphalt concrete pavement and fixes them with the first fixing bolt, thereby facilitating concrete pouring; one support shell fixed to the connecting frame can be attached to the steel column body, and the two support shells are fixed together with the second fixing bolt, so that the two support shells can cooperate with each other to reinforce and support the steel column body.

[0025] (3) In this invention, concrete is poured into the support template shell, and the threaded rod is turned so that the threaded rod can move the pressure plate through the fixed shell by means of the threaded action with the threaded sleeve. The pressure plate can then move the side rod, and the pressure plate can move into the inner side of the support template shell to compact the concrete. Then the pressure plate is moved upward to add more concrete, and the pressure plate is moved downward to continue compacting. This process is repeated to increase the density of the concrete and make the concrete solidify to form a more stable concrete foundation. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 This is a top view schematic diagram of the concrete foundation structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the cross-sectional structure of the asphalt concrete pavement according to the present invention;

[0030] Figure 4 This is a schematic diagram of the angle steel three-dimensional structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the planar cross-sectional structure of the pressure plate of the present invention;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the support template shell of the present invention.

[0033] In the diagram: 1. Bearing layer; 2. Asphalt concrete pavement; 3. Expansion bolt; 4. Column base steel plate; 5. Steel column body; 6. Angle steel; 7. Short reinforcing bar; 8. Concrete foundation; 9. Support formwork shell; 10. First fixing bolt; 11. Connecting frame; 12. Support shell; 13. Second fixing bolt; 14. Connecting plate; 15. Threaded sleeve; 16. Threaded rod; 17. Fixing shell; 18. Pressure plate; 19. Side bar. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1-6As shown, the steel column foundation node for asphalt pavement of the present invention includes a bearing layer 1, on which an asphalt concrete pavement 2 is laid, and also includes an installation mechanism, a support mechanism and a compaction mechanism. The installation mechanism is set on the bearing layer 1 and the asphalt concrete pavement 2. The installation mechanism includes two sets of expansion bolts 3 threaded through the bearing layer 1 and the asphalt concrete pavement 2. Each set of expansion bolts 3 is fixedly installed with a column base steel plate 4 that is in contact with the asphalt concrete pavement 2. A steel column body 5 is fixedly installed on the column base steel plate 4. A concrete foundation 8 fixed to the steel column body 5 is poured on the asphalt concrete pavement 2. A reinforcement component is provided between the asphalt concrete pavement 2 and the concrete foundation 8. The reinforcement component includes two angle steels 6 fixedly installed between the two steel column bodies 5. Short steel bars 7 are fixedly installed between the asphalt concrete pavement 2 and the concrete foundation 8.

[0036] Specifically, the expansion bolt 3 is made of high-strength galvanized material. After passing through the reserved hole in the column base steel plate 4, it is tightened with a special tool, causing its tail to expand and open within the bearing layer 1, providing reliable pull-out resistance. The column base steel plate 4 is a Q355B grade steel plate, and its lower surface is tightly bonded to the asphalt concrete pavement 2. The steel column body 5 is a Q355B grade H-beam, and its bottom is connected to the column base steel plate 4 by double-sided fillet weld. The angle steel 6 restrains the lateral deformation of the steel column body 5, improving its out-of-plane stability. The short steel bar 7 is made of HRB400 grade steel bar, which is vertically driven into the asphalt concrete pavement 2 before pouring the concrete foundation 8. The exposed part is anchored into the concrete foundation 8. Its function is to enhance the anti-slip ability and integrity of the interface between the old and new concrete and the interface between the concrete and the asphalt pavement through the shear force connection of the steel bar.

[0037] Expansion bolts 3 are passed through column base steel plates 4 and connected to asphalt concrete pavement 2 and bearing layer 1. The steel column body 5 is welded to column base steel plates 4. Two angle steels 6 are welded along the long side of the steel column body 5. The welding position of angle steels 6 should be the middle position of the height of concrete foundation 8. The formwork is erected and the concrete foundation 8 is poured. Before pouring, short steel bars 7 are driven into asphalt concrete pavement 2. While reducing costs, this method can effectively improve the load-bearing capacity and overall stability of the steel column. It also solves the problem of uneven settlement caused by softening of asphalt pavement under high temperature. Moreover, the construction is simple and highly adaptable.

[0038] In this embodiment, the support mechanism is mounted on the installation mechanism. The support mechanism includes a casting component mounted on the concrete foundation 8. The casting component is equipped with a limiting component. The casting component includes two symmetrically sliding support template shells 9 mounted on the concrete foundation 8. Multiple first fixing bolts 10 are threadedly installed between the two support template shells 9. The limiting component includes two connecting frames 11 respectively fixedly mounted on the two support template shells 9. Each connecting frame 11 is fixedly mounted with a support shell 12. Multiple second fixing bolts 13 are threadedly installed on each support shell 12. Each support shell 12 is fixedly mounted with another support shell 12 through multiple second fixing bolts 13. Each pair of support shells 12 can be adapted to the steel column body 5 by cooperating with each other.

[0039] Specifically, the support template shell 9 is made of thick steel plate cold-bent, with a release agent applied to the inner surface, and flange plates with bolt holes on its edges; the connecting frame 11 is an L-shaped steel component, welded to the outside of the support template shell 9; by placing the two support template shells 9 on the asphalt concrete pavement 2 and fixing them with the first fixing bolt 10, it is convenient to carry out concrete pouring work; one support shell 12 fixed to the connecting frame 11 can fit against the steel column body 5, and the two support shells 12 are fixed together with the second fixing bolt 13, so that the two support shells 12 can cooperate with each other to reinforce and support the steel column body 5.

[0040] In this embodiment, the compaction mechanism is set on the limiting component. The compaction mechanism includes a movable component set on the limiting component. The movable component is provided with a compaction component. The movable component includes a connecting plate 14 fixedly installed between two support shells 12. A threaded sleeve 15 is fixedly installed on the connecting plate 14. A threaded rod 16 is threadedly installed on the threaded sleeve 15. The compaction component includes a fixed shell 17 rotatably connected to the threaded rod 16. A pressure plate 18 adapted to the supporting template shell 9 is fixedly installed on the fixed shell 17. Two side rods 19 slidably connected to the connecting plate 14 are fixedly installed on the pressure plate 18.

[0041] Specifically, the connecting plate 14 is a rectangular steel plate, horizontally welded between two symmetrical support shells 12 to form a stable portal frame. The threaded sleeve 15 is an internally threaded steel sleeve, welded to the center hole of the connecting plate 14. Its internal thread matches the external thread of the threaded rod 16. The threaded rod 16 is rotatably connected to the fixed shell 17 through a thrust bearing, so that when the threaded rod 16 is rotated, the fixed shell 17 does not rotate but only makes a linear up-and-down movement. The pressure plate 18 is a thick steel plate, and the side rod 19 serves as a guide rod. Its upper end slides into the guide hole on the connecting plate 14, and its lower end is fixed to the pressure plate 18, ensuring that the pressure plate 18 is in operation during compaction. During the process, maintain a horizontal posture and do not tilt. By pouring concrete into the support formwork shell 9, and turning the threaded rod 16, the threaded rod 16 can use the thread action with the threaded sleeve 15 to drive the pressure plate 18 through the fixed shell 17 to move. The pressure plate 18 can then drive the side rod 19 to move, allowing the pressure plate 18 to move into the inner side of the support formwork shell 9 to compact the concrete. Then, move the pressure plate 18 upward to add more concrete, and continue to move the pressure plate 18 downward to compact. Repeat this compaction process to increase the density of the concrete and allow it to solidify into a more stable concrete foundation 8.

[0042] A construction method for steel column foundation joints in asphalt pavement includes the following steps:

[0043] S1. Expansion bolts 3 pass through column base steel plate 4 and connect to asphalt concrete pavement 2 and bearing layer 1. Steel column body 5 is welded to column base steel plate 4. Two angle steels 6 are welded along the long side of the steel column. The welding position of angle steel 6 should be the middle position of the height of concrete foundation 8. Short steel bars 7 are driven into asphalt concrete pavement 2 before pouring.

[0044] S2. Place the two support template shells 9 on the asphalt concrete pavement 2 and fix them with the first fixing bolt 10 so that one support shell 12 fixed to the connecting frame 11 can fit against the steel column body 5. Fix the two support shells 12 with the second fixing bolt 13 so that the two support shells 12 can cooperate with each other to reinforce and support the steel column body 5.

[0045] S3. By pouring concrete into the support formwork shell 9, and by turning the threaded rod 16, the threaded rod 16 can move the pressure plate 18 through the fixed shell 17 by using the thread action with the threaded sleeve 15. The pressure plate 18 can then move the side rod 19, allowing the pressure plate 18 to move into the inner side of the support formwork shell 9 to compact the concrete. Then, the pressure plate 18 is moved upward to add more concrete, and the pressure plate 18 is moved downward to continue compacting. This process is repeated to increase the density of the concrete and allow it to solidify into a more stable concrete foundation 8.

[0046] S4. After the construction is completed, the first fixing bolt 10 and the second fixing bolt 13 are removed to dismantle the formwork shell 9 and the support shell 12.

[0047] Working principle: Expansion bolts 3 are passed through column base steel plates 4 and connected to asphalt concrete pavement 2 and bearing layer 1. The steel column body 5 is welded to column base steel plates 4. Two angle steels 6 are welded along the long side of the steel column. The welding position of the angle steels 6 should be at the middle position of the height of the concrete foundation 8. Short steel bars 7 are driven into the asphalt concrete pavement 2 before pouring. Two support formwork shells 9 are placed on the asphalt concrete pavement 2 and fixed with the first fixing bolt 10, so that one support shell 12 fixed with the connecting frame 11 can fit against the steel column body 5. The two support shells 12 are fixed with the second fixing bolt 13, so that the two support shells 12 fit against the steel column body 5. The supporting shells 12 can cooperate with each other to reinforce and support the steel column body 5; by pouring concrete into the supporting template shell 9, by turning the threaded rod 16, the threaded rod 16 can use the thread action with the threaded sleeve 15 to drive the pressure plate 18 to move through the fixed shell 17, so that the pressure plate 18 can drive the side rod 19 to move, so that the pressure plate 18 can move into the inner side of the supporting template shell 9 to compact the concrete, then move the pressure plate 18 upward to add concrete, and continue to move the pressure plate 18 downward to compact, and so on, to increase the density of the concrete, so that the concrete solidifies to form a more stable concrete foundation 8;

[0048] After construction is completed, the first fixing bolt 10 and the second fixing bolt 13 are removed to dismantle the supporting template shell 9 and the supporting shell 12.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The descriptions in the above embodiments and specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel column foundation node for asphalt pavement, comprising a bearing layer (1), wherein an asphalt concrete pavement (2) is laid on the bearing layer (1), characterized in that: It also includes installation mechanisms, support mechanisms, and compaction mechanisms; The installation mechanism is set on the bearing layer (1) and the asphalt concrete pavement (2). The installation mechanism includes two sets of expansion bolts (3) threaded through the bearing layer (1) and the asphalt concrete pavement (2). Each set of expansion bolts (3) is fixedly installed with a column base steel plate (4) that fits against the asphalt concrete pavement (2). A steel column body (5) is fixedly installed on the column base steel plate (4). A concrete foundation (8) fixed to the steel column body (5) is poured on the asphalt concrete pavement (2). A reinforcement component is provided between the asphalt concrete pavement (2) and the concrete foundation (8). The support mechanism is mounted on the installation mechanism, and the support mechanism includes a casting component mounted on a concrete foundation (8), and the casting component is provided with a limit component; The compaction mechanism is disposed on the limiting component, and the compaction mechanism includes a movable component disposed on the limiting component, and a compaction component is disposed on the movable component.

2. The asphalt pavement steel column foundation node according to claim 1, characterized in that: The reinforcement assembly includes two angle steels (6) fixedly installed between the two steel column bodies (5), and short steel bars (7) are fixedly installed between the asphalt concrete pavement (2) and the concrete foundation (8).

3. The asphalt pavement steel column foundation node according to claim 2, characterized in that: The casting assembly includes two symmetrically sliding support template shells (9) mounted on a concrete foundation (8), with a plurality of first fixing bolts (10) threaded together between the two support template shells (9).

4. The asphalt pavement steel column foundation node according to claim 3, characterized in that: The limiting component includes two connecting frames (11) that are respectively fixedly installed on two supporting template shells (9). Each connecting frame (11) has a supporting shell (12) fixedly installed on it. Each supporting shell (12) has multiple second fixing bolts (13) threadedly installed on it. Each supporting shell (12) has another supporting shell (12) fixedly installed on it through multiple second fixing bolts (13).

5. A steel column foundation node for asphalt pavement according to any one of claims 1-4, characterized in that: Each pair of support shells (12) can be matched with the steel column body (5).

6. A steel column foundation node for asphalt pavement according to claim 4, characterized in that: The active component includes a connecting plate (14) fixedly installed between two support shells (12), a threaded sleeve (15) fixedly installed on the connecting plate (14), and a threaded rod (16) threadedly installed on the threaded sleeve (15).

7. A steel column foundation node for asphalt pavement according to claim 6, characterized in that: The compaction assembly includes a fixed shell (17) rotatably connected to the threaded rod (16), and a pressure plate (18) adapted to the support template shell (9) is fixedly installed on the fixed shell (17). Two side rods (19) slidably connected to the connecting plate (14) are fixedly installed on the pressure plate (18).

8. A construction method for a steel column foundation node in asphalt pavement, characterized in that: Includes the following steps: S1. Expansion bolts (3) pass through column base steel plate (4) and connect with asphalt concrete pavement (2) and bearing layer (1). Steel column body (5) is welded to column base steel plate (4). Two angle steels (6) are welded along the long side of the steel column. The welding position of angle steel (6) should be the middle position of the height of concrete foundation (8). Short steel bars (7) are driven into asphalt concrete pavement (2) before pouring. S2. Place the two support template shells (9) on the asphalt concrete pavement (2) and fix them with the first fixing bolt (10) so that the support shell (12) fixed with the connecting frame (11) can fit against the steel column body (5). Fix the two support shells (12) with the second fixing bolt (13) so that the two support shells (12) can cooperate with each other to reinforce and support the steel column body (5). S3. By pouring concrete into the support formwork shell (9), by turning the threaded rod (16), the threaded rod (16) can use the thread action with the threaded sleeve (15) to drive the pressure plate (18) through the fixed shell (17) to move, so that the pressure plate (18) can drive the side rod (19) to move, so that the pressure plate (18) can move into the inner side of the support formwork shell (9) to compact the concrete. Then move the pressure plate (18) upward to add concrete, and continue to move the pressure plate (18) downward to compact. Repeat this compaction to increase the density of the concrete and make the concrete solidify to form a more stable concrete foundation (8). S4. After the construction is completed, the first fixing bolt (10) and the second fixing bolt (13) are removed to dismantle the support shell (9) and the support shell (12).

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