A partially encased steel-concrete composite beam and a processing method and apparatus thereof

Abstract

The application relates to the technical field of civil engineering and fabricated building structure components, in particular to a partially-coated steel-concrete composite beam and a construction method and equipment thereof. The partially-coated steel-concrete composite beam comprises an H-shaped steel, a plurality of studs arranged in the H-shaped steel, a limiting sleeve sleeved on the outer circumferential surface of the H-shaped steel and limiting caps arranged at the two ends of the limiting sleeve; two concrete cavities are formed between the H-shaped steel, the limiting sleeve and the limiting caps, two through holes are formed at the two ends of the H-shaped steel, and the two through holes and the two concrete cavities are in communication with each other. The partially-coated steel-concrete composite beam and the construction method and equipment thereof can more simply and conveniently discharge air in the cavity of the H-shaped steel.

Description

Technical Field

[0001] This application relates to the technical field of civil engineering and prefabricated building structural components, and in particular to a partially covered steel-concrete composite beam and its construction method and equipment. Background Technology

[0002] Partially encased steel-concrete composite beam structure (PEC structure) is a new type of steel-concrete composite structure formed by welding steel bars, studs or flat steel into H-shaped steel cavities and then pouring concrete. PEC components have superior load-bearing capacity, stiffness and ductility compared to pure steel structures or reinforced concrete structures. Compared with steel-concrete composite structures, it has advantages such as high degree of prefabrication of components, convenient joint connection, and no formwork required.

[0003] However, when pouring concrete into the H-section steel cavity, air can easily enter and form voids, which significantly reduce the strength of the partially encased steel-concrete composite beam. Furthermore, due to the considerable length of the partially encased steel-concrete composite beam, removing the air from the H-section steel cavity presents significant challenges. Summary of the Invention

[0004] To reduce the difficulty of venting air from the H-shaped steel cavity, this application provides a partially encased steel-concrete composite beam and its processing method and equipment.

[0005] In a first aspect, this application provides a partially clad steel-concrete composite beam, employing the following technical solution:

[0006] A partially clad steel-concrete composite beam includes an H-beam, a plurality of studs disposed within the H-beam, a limiting sleeve fitted onto the outer circumferential surface of the H-beam, and limiting caps disposed at both ends of the limiting sleeve.

[0007] Two concrete cavities are formed between the H-beam, the limiting sleeve, and the limiting cap. Two through holes are opened at both ends of the H-beam, and the two through holes are connected to the two concrete cavities. When the concrete cavities are filled with concrete, the partially covered steel-concrete composite beam is inclined. The through hole located at the bottom is used to transfer concrete into the concrete cavity, and the through hole located at the top is used to observe the filling status of the concrete in the concrete cavity.

[0008] By adopting the above technical solution, when it is necessary to fill the partially encased steel-concrete composite beam with concrete, the workers can first tilt the partially encased steel-concrete composite beam, and then fill the concrete cavity through the through hole located at the bottom. At this time, the air in the partially encased steel-concrete composite beam gradually moves upward with the filling of concrete, and finally exits from the through hole located at the top, effectively reducing the air content in the concrete cavity, effectively reducing the porosity of the partially encased steel-concrete composite beam, and thus improving the strength of the partially encased steel-concrete composite beam.

[0009] Optionally, the limiting cap includes a connecting plate and sealing blocks symmetrically fixed to the connecting plate. The connecting plate abuts against the limiting sleeve, and the two sealing blocks extend into the two concrete cavities. The length of the sealing blocks is between 4-6 cm.

[0010] By adopting the above technical solution, due to the presence of the sealing block, after the concrete of the partially encased steel-concrete composite beam has cured, a 4-6cm long allowance will be formed at both ends of the partially encased steel-concrete composite beam. This allowance can make the installation of the partially encased steel-concrete composite beam simpler and more stable.

[0011] Optionally, two threaded holes are provided at both ends of the H-beam, and a positioning bolt is provided in the threaded hole. The positioning bolt passes through the threaded hole and is fixedly connected to the sealing block.

[0012] By adopting the above technical solution, the positioning bolts can limit the positioning of the sealing block, effectively reducing the possibility of the sealing block falling off. Moreover, when installing the partially encased steel-concrete composite beam, the threaded holes can also serve as concrete filling points, effectively reducing the difficulty of subsequent concrete filling operations.

[0013] Secondly, this application provides a method for fabricating partially clad steel-concrete composite beams, employing the following technical solution:

[0014] A method for fabricating a partially clad steel-concrete composite beam includes the following steps:

[0015] S1. Place the limiting sleeve on the outer circumference of the H-beam, and then fix the two limiting caps to both ends of the limiting sleeve;

[0016] S2. Place the partially covered steel-concrete composite beam at an angle, then fill the lower through hole with concrete. When the concrete flows out from the upper through hole, stop filling the concrete. Then vibrate the partially covered steel-concrete composite beam and then fill the concrete again.

[0017] S3. Lay the partially encased steel-concrete composite beam flat and cure it, with the through holes facing upwards. After the concrete has cured, remove the limiting sleeve and the limiting cap to complete the processing of the partially encased steel-concrete composite beam.

[0018] By adopting the above technical solutions, not only can air in part of the concrete cavity be effectively discharged, but the filling status of the concrete in the concrete cavity can also be observed in real time. Furthermore, the square curing can effectively improve the stability of the concrete during curing in partially encased steel-concrete composite beams, effectively reduce the possibility of collapse in partially encased steel-concrete composite beams, and effectively improve the yield of partially encased steel-concrete composite beams.

[0019] Furthermore, since the partially encased steel-concrete composite beams are prefabricated, the concrete filling process can be effectively eliminated during actual installation, indirectly reducing the porosity within the concrete. The vibration process further removes air from the concrete, effectively improving the strength of the partially encased steel-concrete composite beams.

[0020] Optionally, in S1, a release agent is first applied to the inner wall of the limiting sleeve and the inner wall of the limiting cap.

[0021] By adopting the above technical solution, due to the setting of the release agent, the staff can more easily and conveniently remove the limiting sleeve and the limiting cap, thereby improving the preparation efficiency of partially encased steel-concrete composite beams.

[0022] Thirdly, this application provides a processing equipment for partially covering steel-concrete composite beams, employing the following technical solution:

[0023] A processing device for partially clad steel-concrete composite beams includes a vibration device and a filling device. The filling device is disposed on the vibration device, and the partially clad steel-concrete composite beam is placed on the filling device. The filling device includes a rotation mechanism and a filling mechanism. The rotation mechanism is used to tilt the partially clad steel-concrete composite beam, and the filling device is used to fill concrete into the concrete cavity.

[0024] The rotating mechanism includes a support mounted on the vibrating end of the vibration device, a placement frame rotatably connected to the support, and a driving hydraulic cylinder mounted inside the support. The cylinder body of the driving hydraulic cylinder is rotatably connected to the support, and the piston rod of the driving hydraulic cylinder is rotatably connected to the placement frame. The placement frame has several positioning slots for placing a portion of the steel-concrete composite beam. The filling device is mounted on the placement frame.

[0025] By adopting the above technical solution, when it is necessary to fill the concrete cavity with concrete, the workers can first place part of the steel-concrete composite beam into the positioning groove using a crane. Then, by simply activating the drive hydraulic cylinder, the placement frame can be rotated, which in turn causes part of the steel-concrete composite beam to tilt. Then the filling mechanism can fill the concrete cavity with concrete.

[0026] The aforementioned equipment has a simple structure and can simultaneously tilt multiple partially encased steel-concrete composite beams, effectively improving the concrete filling efficiency of partially encased steel-concrete composite beams.

[0027] Optionally, the filling mechanism includes a support frame, a sliding plate, and a first driving component. The support frame is disposed on the placement frame, the sliding plate is slidably connected to the placement frame, and a plurality of filling tubes are disposed on the sliding plate. The filling tubes are interconnected with a pressure pump.

[0028] The first driving member is disposed on the placement frame, the sliding plate is disposed at the output end of the first driving member, the first driving member drives the sliding plate to slide back and forth, and the first driving member drives the filling tube to be inserted into the through hole;

[0029] The first driving component includes a first driving motor, a lead screw, and a lead screw nut. The first driving motor is mounted on the placement frame, the lead screw is fixedly connected to the output end of the first driving motor, and the lead screw nut is fixedly connected to the sliding plate. The lead screw and the lead screw nut are threadedly connected.

[0030] By adopting the above technical solution, when it is necessary to fill the concrete cavity with concrete, the first drive motor drives the lead screw to rotate, and the lead screw drives the sliding plate to move down through the lead screw nut, thereby inserting the filling tube into the through hole located below, thus completing the concrete filling operation of the concrete cavity.

[0031] The aforementioned equipment can fill multiple sections of steel-concrete composite beams with concrete, effectively improving the concrete filling efficiency.

[0032] Optionally, the processing equipment for the partially encased steel-concrete composite beam further includes a placement platform, and the filling device further includes a transfer mechanism, which is used to transfer the partially encased steel-concrete composite beam after concrete filling from the placement frame to the placement platform;

[0033] The transfer mechanism includes a second drive component, a sliding frame, several connecting rods, and several push plates. The sliding frame is reciprocally connected to the bottom of the placement frame. The connecting rods are located at one end of the sliding frame near the filling mechanism, and the push plates are located at the end of the connecting rods away from the sliding frame. A sliding groove is connected through the bottom of the positioning groove. The connecting rods reciprocate within the sliding groove and the positioning groove.

[0034] By adopting the above technical solution, after the concrete cavity is filled with concrete, the hydraulic cylinder first controls the partial steel-concrete composite beam to be laid flat. Then, the second driving component controls the sliding frame to move towards the placement platform. The placement frame drives the push plate to move synchronously through the connecting rod, thereby causing the push plate to gradually transfer the partial steel-concrete composite beam to the placement platform.

[0035] The aforementioned equipment has a simple structure and can perform transfer operations on multiple partially coated steel-concrete composite beams, effectively improving the preparation efficiency of partially coated steel-concrete composite beams.

[0036] Optionally, the second driving component includes a second driving motor, a driving gear, and a driving rack. The second driving motor is mounted on the placement frame, the driving gear is fixedly connected to the output end of the second driving motor, and the driving rack is mounted on the sliding frame. The driving gear and the driving rack mesh with each other.

[0037] By adopting the above technical solution, when it is necessary to control the sliding frame to slide, the second drive motor drives the drive gear to rotate, and the drive gear drives the sliding frame to reciprocate through the drive rack.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. Due to the inclination of the partially encased steel-concrete composite beam, when concrete is filled into the concrete cavity, the air inside the partially encased steel-concrete composite beam will gradually move upward with the filling of concrete and eventually be discharged from the through hole located at the top, effectively reducing the air content in the concrete cavity.

[0040] 2. Due to the presence of the sealing block, after the concrete of the partially encased steel-concrete composite beam has cured, a 4-6cm long allowance will be formed at both ends of the partially encased steel-concrete composite beam. This allowance can make the installation of the partially encased steel-concrete composite beam simpler and more stable.

[0041] 3. Because the partially encased steel-concrete composite beams are prefabricated, the concrete filling process can be effectively eliminated during actual installation, indirectly reducing the porosity within the concrete. Furthermore, vibration can further expel air from the concrete, effectively improving the strength of the partially encased steel-concrete composite beams. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a partially clad steel-concrete composite beam.

[0043] Figure 2 This is a partial exploded view of a steel-concrete composite beam.

[0044] Figure 3 This is a schematic diagram of the processing equipment for partially covering steel-concrete composite beams.

[0045] Figure 4 This is a schematic diagram of the filling device.

[0046] Figure 5 This is a schematic diagram of the rotating mechanism.

[0047] Figure 6 This is a schematic diagram of the filling mechanism.

[0048] Figure 7 yes Figure 6 Enlarged schematic diagram of part A in the middle.

[0049] Figure 8 This is a schematic diagram of the transfer mechanism.

[0050] Explanation of reference numerals in the attached drawings: 1. Partially clad steel-concrete composite beam; 2. Vibration device; 3. Filling device; 4. Placement platform; 11. H-beam; 12. Stud; 13. Limiting sleeve; 14. Limiting cap; 15. Concrete cavity; 16. Through hole; 17. Threaded hole; 18. Positioning bolt; 31. Rotation mechanism; 32. Filling mechanism; 33. Transfer mechanism; 141. Connecting plate; 142. Sealing block; 311. Support; 312. Placement frame; 313. Drive 321. Hydraulic cylinder; 322. Support frame; 323. Sliding plate; 324. First driving component; 325. Sliding track; 336. Filling tube; 337. Second driving component; 338. Sliding frame; 339. Connecting rod; 320. Push plate; 331. Slide groove; 3121. Positioning groove; 3231. First drive motor; 3232. Lead screw; 3233. Lead screw nut; 3311. Second drive motor; 3312. Drive gear; 3313. Drive rack. Detailed Implementation

[0051] The following is in conjunction with the appendix Figure 1-8This application will be described in further detail.

[0052] This application discloses a partially clad steel-concrete composite beam 1. (Refer to...) Figure 1 and Figure 2 The partially encased steel-concrete composite beam 1 includes an H-beam 11, several studs 12 disposed within the H-beam 11, a limiting sleeve 13 fitted onto the outer periphery of the H-beam 11, and limiting caps 14 fixed to both ends of the limiting sleeve 13.

[0053] Two concrete cavities 15 are formed between the H-beam 11, the limiting sleeve 13, and the limiting cap 14. Two through holes 16 are opened at both ends of the H-beam 11, and these holes typically communicate with the two concrete cavities 15 respectively. The limiting cap 14 includes a connecting plate 141 and two sealing blocks 142 symmetrically fixed to the connecting plate 141. The connecting plate 141 abuts against the limiting sleeve 13, and the two sealing blocks 142 extend into the two concrete cavities 15 respectively. The length of the sealing blocks 142 is between 4-6 cm; in this embodiment, the length of the sealing blocks 142 is 5 cm. Two threaded holes 17 are also opened at both ends of the H-beam 11. Positioning bolts 18 pass through the threaded holes 17 and are threadedly connected to the sealing blocks 142.

[0054] This application also discloses a processing device for partially covering a steel-concrete composite beam 1. (Refer to...) Figure 3 The processing equipment for the partially encased steel-concrete composite beam 1 includes a vibration device 2, a filling device 3, and a placement platform 4. The filling device 3 is mounted on the vibration device 2. The partially encased steel-concrete composite beam 1 is placed at the filling device 3, which is used to fill the concrete cavity 15 with concrete. The vibration device 2 is used to expel air from the concrete. It should be noted that the vibration device 2 can be a commercially available conventional concrete vibration table, depending on the actual situation. The placement platform 4 is used to lay the partially encased steel-concrete composite beam 1 flat after the concrete has been filled.

[0055] Reference Figure 4 The filling device 3 includes a rotating mechanism 31, a filling mechanism 32, and a transfer mechanism 33. The partially coated steel-concrete composite beam 1 is placed on the rotating mechanism 31, which is used to tilt the partially coated steel-concrete composite beam 1. The filling mechanism 32 is used to fill concrete into the concrete cavity 15, and the transfer mechanism 33 is used to transfer the partially coated steel-concrete composite beam 1 after the concrete is filled to the placement platform 4.

[0056] Reference Figure 4 and Figure 5The rotating mechanism 31 includes a support 311, a placement frame 312, and a driving hydraulic cylinder 313. The support 311 is fixedly connected to the vibrating end of the vibrating device 2, the placement frame 312 is rotatably connected to the support 311, the cylinder body of the driving hydraulic cylinder 313 is rotatably connected to the support 311, and the piston rod of the driving hydraulic cylinder 313 is rotatably connected to the placement frame 312. The filling mechanism 32 and the transfer mechanism 33 are both mounted on the placement frame 312. The upper surface of the placement frame 312 is provided with several positioning grooves 3121. The positioning grooves 3121 are used to place part of the steel-concrete composite beam 1, and the number of positioning grooves 3121 can be arbitrarily set according to actual needs.

[0057] When it is necessary to tilt the partially coated steel-concrete composite beam 1, the workers can first use a crane to transfer the partially coated steel-concrete composite beam 1 to the positioning groove 3121, and then drive the hydraulic cylinder 313 to drive the placement frame 312 to rotate, thereby causing the partially coated steel-concrete composite beam 1 to be tilted.

[0058] Reference Figure 4 and Figure 6 The filling mechanism 32 includes a support frame 321, a sliding plate 322, and a first driving component 323. The support frame 321 is fixedly connected to the side of the placement frame 312 near the support 311. A sliding track 324 is provided on the placement frame 312, and the sliding plate 322 is slidably connected to the support frame 321 through the sliding track 324. Several filling pipes 325 are installed on the sliding plate 322. The filling pipes 325 are connected to a pressure pump, and the end of the filling pipe 325 away from the sliding plate 322 extends into the concrete pool.

[0059] The first driving member 323 is mounted on the support plate, and the sliding plate 322 is mounted on the output end of the first driving member 323. The first driving member 323 drives the sliding plate 322 to slide back and forth on the support frame 321. The first driving member 323 drives the filling tube 325 to be movably inserted into the through hole 16.

[0060] Reference Figure 6 and Figure 7 The first driving component 323 includes a first driving motor 3231, a lead screw 3232, and a lead screw nut 3233. The first driving motor 3231 is fixedly connected to the support frame 321, and the lead screw 3232 is fixedly connected to the output end of the first driving motor 3231. The lead screw 3232 is threadedly fixedly connected to the sliding plate 322, and the lead screw 3232 passes through the sliding plate 322 and is threadedly connected to the lead screw nut 3233.

[0061] When concrete needs to be filled into the concrete cavity 15, the first drive motor 3231 first drives the lead screw 3232 to rotate. The lead screw 3232 then drives the sliding plate 322 to move down through the lead screw nut 3233. The sliding plate 322 causes the filling tube 325 to be inserted into the through hole 16. After that, the pressure pump can transfer the concrete into the concrete cavity 15 through the filling tube 325.

[0062] Reference Figure 4 and Figure 8 The transfer mechanism 33 includes a second driving member 331, a sliding frame 332, several connecting rods 333, and several push plates 334. The sliding frame 332 reciprocates at the bottom of the placement frame 312. The connecting rods 333 are fixedly connected to the side of the sliding frame 332 near the filling mechanism 32, and the push plates 334 are fixedly connected to the end of the connecting rods 333 away from the sliding frame 332. A sliding groove 335 is provided through the bottom of the placement slot. The connecting rods 333 reciprocate within the sliding groove 335, and the push plates 334 reciprocate within the positioning groove 3121. It should be noted that in this embodiment, the number of connecting rods 333, push plates 334, and sliding grooves 335 is the same as the number of positioning grooves 3121 and they correspond to each other.

[0063] The second driving component 331 includes a second driving motor 3311, a driving gear 3312, and a driving rack 3313. The second driving motor 3311 is fixedly connected to the placement frame 312, the driving gear 3312 is fixedly connected to the output end of the second driving motor 3311, and the driving rack 3313 is fixedly connected to the bottom of the sliding frame 332. The driving gear 3312 and the driving rack 3313 mesh with each other.

[0064] After the concrete filling of the partially encased steel-concrete composite beam 1 is completed, the rotating mechanism 31 first lays the partially encased steel-concrete composite beam 1 flat. Then, the second drive motor 3311 drives the drive gear 3312 to rotate. The drive gear 3312, through the drive rack 3313, causes the sliding frame 332 to move towards the placement platform 4. The sliding frame 332, through the connecting rod 333, drives the push plate 334 to move, thereby transferring the partially encased steel-concrete composite beam 1 with completed concrete filling to the placement platform 4 for curing.

[0065] It should be noted that, in this embodiment, the aforementioned fixed connection can be selected from conventional fixed connection methods such as welding, integral molding, and bolting, depending on the actual situation. The aforementioned sliding connection can be selected from forms such as slide rails or slide grooves 335, depending on the actual situation.

[0066] This application also discloses a method for fabricating a partially clad steel-concrete composite beam 1, which includes the following steps:

[0067] S1. First, apply a release agent to the inner wall of the limiting sleeve 13 and the inner wall of the limiting cap 14. The release agent can be a conventional release agent such as machine oil. Then, put the limiting sleeve 13 on the outer circumference of the H-beam 11, and then place the limiting cap 14 on both ends of the limiting sleeve 13. Finally, pass the positioning bolt 18 through the threaded hole 17 and connect it to the sealing block 142.

[0068] S2. The partially coated steel-concrete composite beam 1 is transferred to the positioning groove 3121 by a crane. Then, the driving hydraulic cylinder 313 is activated to drive the placement frame 312 to rotate, thereby causing the partially coated steel-concrete composite beam 1 to rotate, thus causing the partially coated steel-concrete composite beam 1 to be in an inclined state.

[0069] Subsequently, the first drive motor 3231 first drives the lead screw 3232 to rotate. The lead screw 3232 then drives the sliding plate 322 to move downward through the lead screw nut 3233. The sliding plate 322 causes the filling tube 325 to be inserted into the through hole 16. Then, the pressure pump can transfer concrete into the concrete cavity 15 through the filling tube 325. When the concrete flows out from the through hole 16 located above, the concrete filling stops. Then, the vibration device 2 vibrates the partially covered steel-concrete composite beam 1, and then the concrete is replenished.

[0070] S3. After the concrete filling in the partially encased steel-concrete composite beam 1 is completed, the drive hydraulic cylinder 313 is activated again. The drive hydraulic cylinder 313 drives the placement frame 312 to reset, thereby causing the partially encased steel-concrete composite beam 1 with the concrete filling to be in a flat position.

[0071] Subsequently, the second drive motor 3311 drives the drive gear 3312 to rotate, and the drive gear 3312, through the drive rack 3313, causes the sliding frame 332 to move towards the placement platform 4. The sliding frame 332, through the connecting rod 333, drives the push plate 334 to move, thereby transferring the partially filled concrete-covered steel-concrete composite beam 1 to the placement platform 4 for curing, with the through hole 16 and threaded hole 17 facing upwards during curing.

[0072] After the concrete has cured, remove the limiting sleeve 13 and the limiting cap 14 to complete the processing of the partially covered steel-concrete composite beam 1.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for fabricating a partially clad steel-concrete composite beam, characterized in that, It includes an H-beam (11), a number of studs (12) disposed inside the H-beam (11), a limiting sleeve (13) sleeved on the outer periphery of the H-beam (11), and limiting caps (14) disposed at both ends of the limiting sleeve (13). Two concrete cavities (15) are formed between the H-beam (11), the limiting sleeve (13), and the limiting cap (14). Two through holes (16) are opened at both ends of the H-beam (11), and the two through holes (16) are connected to the two concrete cavities (15). When the concrete cavities (15) are filled with concrete, the partially covered steel-concrete composite beam (1) is inclined. The through hole (16) located below is used to transfer concrete into the concrete cavity, and the through hole (16) located above is used to observe the concrete filling status in the concrete cavity (15). The limiting cap (14) includes a connecting plate (141) and sealing blocks (142) symmetrically fixed on the connecting plate (141). The connecting plate (141) abuts against the limiting sleeve (13). The two sealing blocks (142) extend into the two concrete cavities (15). The length of the sealing blocks (142) is between 4-6 cm. Two threaded holes (17) are provided at both ends of the H-beam (11). A positioning bolt (18) is provided in the threaded hole (17). The positioning bolt (18) passes through the threaded hole (17) and is fixedly connected to the sealing block (142). It also includes the following steps: S1. Place the limiting sleeve (13) on the outer circumference of the H-beam (11), and then fix the two limiting caps (14) to both ends of the limiting sleeve (13); S2. Place the partially covered steel-concrete composite beam (1) at an angle, and then fill the lower through hole (16) with concrete. When the concrete flows out from the upper through hole (16), stop filling the concrete, then vibrate the partially covered steel-concrete composite beam (1), and then fill the concrete again. S3. The partially covered steel-concrete composite beam (1) is laid flat and cured, with the through hole (16) facing upward. After the concrete has cured, the limiting sleeve (13) and the limiting cap (14) are removed, thus completing the processing of the partially covered steel-concrete composite beam (1).

2. The processing method for partially clad steel-concrete composite beams according to claim 1, characterized in that: In S1, a release agent is first applied to the inner wall of the limiting sleeve (13) and the inner wall of the limiting cap (14).

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