A fabricated free-supporting frame structure

Abstract

The application relates to an assembled support-free frame structure which comprises a prefabricated beam, a support strip plate and at least two prefabricated columns, the upper part of the prefabricated column is embedded with a sleeve, the upper end of the sleeve is arranged in a direction away from the axis of the prefabricated column, an inclined brace is inserted in the sleeve, and the upper end of the inclined brace is hingedly connected with a hinged seat; the support strip plate is horizontally arranged and used for supporting the bottom surface of the prefabricated beam, the two ends of the support strip plate are respectively abutted by the hinged seats of the inclined braces of the prefabricated columns on one side, and the hinged seats and the bottom surface of the support strip plate are slidably connected in the length direction of the prefabricated beam. The combination of the embedded sleeve and the inclined brace is arranged to form a stable support point, the support strip plate is supported, the prefabricated beam is supported, a temporary support system is not needed, the construction period is greatly shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of prefabricated building component assembly structures, and in particular to a prefabricated supportless frame structure. Background Technology

[0002] Prefabricated building construction refers to the process of manufacturing building components and accessories, such as floor slabs, wall panels, stairs, beams and columns, in a factory, transporting them to the construction site, and assembling and installing them on-site using reliable connection methods. Therefore, it has the advantages of rapid construction and reduced construction waste.

[0003] Currently, prefabricated concrete frame structures mainly consist of precast columns, precast beams, and connecting components between them. The connection between columns and beams, and between beams, is achieved by pre-reserved steel bars at the joints and then cast-in-place concrete. In actual construction, a temporary support system needs to be built under the precast beams, usually using temporary scaffolding.

[0004] However, setting up a temporary support system requires time for both setup and subsequent dismantling, which affects construction efficiency. Summary of the Invention

[0005] To improve construction efficiency, this application provides a prefabricated, support-free frame structure.

[0006] This application provides a prefabricated, support-free frame structure, which adopts the following technical solution:

[0007] A prefabricated, support-free frame structure includes precast beams, support strips, and at least two precast columns. A sleeve is pre-embedded in the upper part of each precast column, with the upper end of the sleeve inclined away from the column's axis. An inclined brace is inserted into the sleeve, and its upper end is hinged to a hinge seat. The support strip is horizontally positioned and supports the bottom surface of the precast beams. Both ends of the support strip are respectively abutted by the hinge seats of the inclined braces of one side of the precast column, and the hinge seats are slidably connected to the bottom surface of the support strip along the length of the precast beam.

[0008] By adopting the above technical solution, firstly, by setting up a combination of pre-embedded sleeves and diagonal braces to form stable support points, the support strips are supported, thereby supporting the precast beams. There is no need to temporarily erect a support system, which greatly shortens the construction cycle and improves construction efficiency.

[0009] Secondly, when the downward pressure of the precast beam is transmitted to the diagonal brace through the hinge seat, it will force the diagonal brace to be inserted more tightly and tilted into the sleeve. This downward pressure can be transmitted to the precast column more directly, thereby improving the support effect. The sliding setting of the hinge seat can ensure that the hinge seat can still support the support plate after the diagonal brace is inserted and moved.

[0010] Optionally, the precast column is provided with sleeves on both sides in the width direction, the lower ends of the two sleeves are connected, and the lower ends of the diagonal braces inside the two sleeves abut each other.

[0011] By adopting the above technical solution, when the diagonal brace is tilted and inserted downwards due to the downward pressure of the precast beam, the downward pressure of the precast beam will be partially converted into a component force that forces the diagonal brace to tilt and insert downwards. Since the lower ends of the two diagonal braces abut each other, the component forces on the two diagonal braces cancel each other out, and the component forces of the downward pressure of the two precast beams will be canceled out, thereby greatly reducing the downward pressure of the precast beam on the precast column, and thus indirectly improving the support capacity of the diagonal brace.

[0012] Optionally, a first steel strand is fixedly connected between the upper parts of the adjacent diagonal braces of the two precast columns. Multiple sliders are threaded through the first steel strand and arranged at intervals along the length of the first steel strand. A support rod is connected between the slider and the bottom surface of the support plate. The length of each support rod gradually shortens from the middle to both ends of the first steel strand.

[0013] By adopting the above technical solution, when the precast beam is placed on the support plate, the support plate shifts downward a short distance under load, thereby forcing the diagonal brace to insert deeper into the sleeve. During this process, the diagonal braces on both sides move apart to tighten the first steel strand. The tension of the first steel strand is transmitted to the support rod through the slider, applying an upward force to the support rod to support the middle of the support plate. This is more suitable for the working conditions of large-span beams and improves the stability of the support.

[0014] Optionally, the slider has two support rods, the lower ends of which are hinged to the slider and the upper ends of which are hinged to the bottom surface of the support plate. The support rods are inclined and the upper ends of the two support rods are symmetrically arranged with the central axis of the support plate as the center.

[0015] By adopting the above technical solution, the two support rods form a triangular support structure, thereby improving the support stability.

[0016] Optionally, the first steel strand is provided as two strands, located on both sides of the slider in the width direction, and the side of the slider is provided with a first tube for the first steel strand to pass through.

[0017] By adopting the above technical solution, the setting of two first steel strands can more effectively and smoothly transfer the tension of the first steel strands to the slider and support rod.

[0018] Optionally, a fixing plate is fixed to the lower end of the diagonal brace. The fixing plate is vertically arranged, and a horizontally arranged tie bolt is connected between the fixing plates of the two diagonal braces of the precast column. A conical hole is opened on the surface of the fixing plate. The edge of the screw head of the tie bolt abuts against the hole wall of the conical hole of one of the fixing plates. A nut is welded and fixed to the conical hole of the other fixing plate, and the tie bolt and the nut cooperate.

[0019] By adopting the above technical solution, the tightening of the tie bolts forces the fixing plates on both sides to move closer to each other, thereby forcing the diagonal braces on both sides to insert deeper into the sleeve, further tightening the first steel strand, thereby increasing the supporting force of the support rod and improving the overall structural support effect.

[0020] Then, the line abuts between the wall of the conical hole and the threaded head of the tie bolt to reduce friction, thereby facilitating the rotation of the tie bolt. Secondly, this line abuts acts as a centering mechanism, which can improve the coaxiality of the tie bolt, thereby improving the effect of transmitting the tightening force of the tie bolt to the fixing plate.

[0021] Optionally, a second steel strand is also included. The diagonal brace is provided with a through hole. One end of the second steel strand is fixedly connected to the fixing plate. The other end of the second steel strand passes through the through hole of the adjacent diagonal brace in sequence, winds two first steel strands along the direction of the first steel strand, passes through the through hole of another diagonal brace, and is fixed to another fixing plate.

[0022] By adopting the above technical solution, when the support bar is pressed down and drives the diagonal brace to be further inserted into the sleeve, the second steel strand is tightened, making its winding around the first steel strand more tight, so as to force the two first steel strands to move closer to each other and tighten, thereby greatly improving the rigidity of the first steel strand, and thus improving the support effect of the first steel strand on the support rod and the slider.

[0023] Optionally, the perforation is higher than the slider, and a second through tube is fixed to the bottom of the slider, through which the first steel strand passes.

[0024] By adopting the above technical solution, the second steel strand is made to be in an arc shape. When the second steel strand is taut, its tension will be transmitted to the support rod through the second tube and the slider in sequence, thereby providing an upward force to the support plate and further improving the support effect of the overall structure.

[0025] Optionally, the diagonal brace is an I-beam.

[0026] By adopting the above technical solution, the structural strength of the diagonal brace can be greatly improved, and the surface of the I-beam is relatively flat, making it easier to slide and insert with the inner wall of the sleeve.

[0027] Optionally, the diagonal brace is divided into a fixed part located inside the sleeve and a supporting part located outside the sleeve along its own length direction. The fixed part and the supporting part are fixedly connected by a flange. The first steel strand is fixedly connected to the supporting part, and the hinge seat is provided on the supporting part.

[0028] By adopting the above technical solution, when the support structure needs to be disassembled after construction is completed, the flange connection can be released to remove the support part, the first steel strand, the support rod, and the support strip together. Then, the fixing part can be removed from the sleeve, thus completing the quick disassembly of the entire support structure, which is convenient and fast.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. By setting up a combination of pre-embedded sleeves and diagonal braces to form stable support points, the support strips are supported, thereby supporting the precast beams. There is no need to temporarily erect a support system, which greatly shortens the construction cycle and improves construction efficiency.

[0031] 2. By utilizing the abutment of the lower ends of the two diagonal braces, the component forces on the two diagonal braces cancel each other out, thereby greatly reducing the downward pressure of the precast beam on the precast column, and thus indirectly improving the support capacity of the diagonal braces.

[0032] 3. By coordinating the diagonal bracing with the first steel strand, the downward pressure of the precast beam is successively converted into the tension force of the first steel strand and the upward force applied to the support rod, thereby supporting the middle part of the support plate. This is more suitable for the working conditions of large-span beams and improves the stability of the support. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0034] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0035] Figure 3 This is a schematic diagram of the overall structure of Example 2.

[0036] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle.

[0037] Figure 5 This is a schematic diagram illustrating the shape of the support rod in Example 2.

[0038] Figure 6 This is a partial structural schematic diagram of Example 3.

[0039] Figure 7 This is a schematic diagram of the overall structure of Example 4.

[0040] Figure 8 yes Figure 7 A magnified view of a section at point C.

[0041] Figure 9 yes Figure 7 A magnified view of a section at point D.

[0042] Figure 10 This is a schematic diagram of Example 4 illustrating the winding method of the second steel strand and the first steel strand.

[0043] Explanation of reference numerals in the attached drawings: 1. Sleeve; 2. Diagonal brace; 3. Support plate; 4. First steel strand; 5. Second steel strand; 6. Tie bolt; 7. Nut; 10. Precast column; 20. Precast beam; 21. Hinge seat; 22. Fixing part; 23. Supporting part; 24. Ear plate; 25. Fixing plate; 251. Conical hole; 26. Through hole; 27. Through hole; 31. T-slot; 41. Sliding block; 411. First through pipe; 412. Second through pipe; 42. Support rod. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0045] Embodiment 1 of this application discloses a prefabricated supportless frame structure.

[0046] Reference Figure 1 , Figure 2 The prefabricated supportless frame structure includes a precast beam 20, a support strip 3, and at least two precast columns 10. Two sleeves 1 are pre-embedded in the upper part of the precast column 10. The sleeves 1 are symmetrically arranged with the central axis of the precast column 10 as the center. The cross-section of the sleeve 1 is square. The upper end of the sleeve 1 is inclined in a direction away from the axis of the precast column 10. The lower ends of the two sleeves 1 are connected.

[0047] The sleeve 1 is provided with a diagonal brace 2. In this embodiment, the diagonal brace 2 is an I-beam. The diagonal brace 2 is inserted into the sleeve 1 along the axial direction of the sleeve 1. The upper end of the diagonal brace 2 is located outside the sleeve 1. Furthermore, the upper end of the diagonal brace 2 is hinged to a hinge seat 21. The two ends of the support plate 3 are respectively provided for the hinge seat 21 of the diagonal brace 2 of the precast column 10 on one side to abut. Specifically, the bottom surface of the support plate 3 is provided with a T-shaped groove 31 along its own length direction. The hinge seat 21 is slidably connected to the T-shaped groove 31.

[0048] During construction, the precast column 10 is first fixedly installed, then the diagonal brace 2 is inserted into the sleeve 1, and the support plate 3 is placed so that the T-shaped groove 31 on the support plate 3 cooperates with the hinge seat 21 on the diagonal brace 2. At this time, the support plate 3 is set horizontally. Then the precast beam 20 is hoisted and placed on the support plate 3. The support plate 3 and the diagonal brace 2 jointly support the precast beam 20. There is no need to temporarily set up a support system, which greatly shortens the construction cycle and improves construction efficiency.

[0049] Furthermore, when the support plate 3 is compressed, the downward pressure of the precast beam 20 is transmitted to the diagonal brace 2 through the hinge seat 21, which will force the diagonal brace 2 to be inserted more tightly into the sleeve 1 until the lower ends of the two diagonal braces 2 abut against each other when the diagonal brace 2 is inserted deep into the sleeve 1. At this time, the component forces on the two diagonal braces 2 cancel each other out, and the component forces of the downward pressure of the two precast beams 20 will be canceled out, thereby greatly reducing the downward pressure of the precast beam 20 on the precast column 10, and thus indirectly improving the support capacity of the diagonal brace 2.

[0050] Example 2

[0051] The difference between Example 2 and Example 1 is that, as Figure 3 As shown, there is a gap between the lower ends of the two diagonal braces 2 on the precast column 10. A first steel strand 4 is provided between the two opposing diagonal braces 2 of two adjacent precast columns 10. Specifically, the first steel strand 4 extends along the length of the support strip 3, and both ends of the first steel strand 4 are connected to the upper part of the adjacent diagonal brace 2. For example, a lifting ring is fixed to the upper part of the diagonal brace 2, and the end of the first steel strand 4 is tied and fixedly connected to the lifting ring.

[0052] like Figure 4 , Figure 5 As shown, there are two first steel strands 4, and the two first steel strands 4 are located on both sides of the width direction of the slider 41. Multiple sliders 41 are arranged at intervals along the length direction of the first steel strand 4 on the first steel strand 4. Specifically, a first through tube 411 is fixed on both sides of the slider 41, and the first steel strand 4 passes through the first through tube 411.

[0053] The slider 41 is provided with two support rods 42. The lower ends of the two support rods 42 are hinged to the slider 41, and the upper ends of the support rods 42 are hinged to the bottom surface of the support plate 3. Furthermore, the support rods 42 are inclined and the upper ends of the two support rods 42 are symmetrically arranged with the central axis of the support plate 3 as the center, so that the two support rods 42 are arranged in a V shape.

[0054] Meanwhile, the lengths of the support rods 42 on different sliders 41 are different. Specifically, the length of each support rod 42 gradually shortens from the middle to both ends of the first steel strand 4, so that the middle of the first steel strand 4 is curved downward.

[0055] The implementation principle of Example 2 is as follows: When the precast beam 20 is placed on the support plate 3, the support plate 3 moves down a small distance under the load, thereby forcing the diagonal brace 2 to be inserted deeper into the sleeve 1. At this time, the diagonal braces 2 on the opposite sides move apart to tighten the first steel strand 4. The tension of the first steel strand 4 is transmitted to the support rod 42 through the slider 41, which applies an upward force to the support rod 42 to support the middle part of the support plate 3. Combined with the support of the diagonal brace 2 and the hinge seat 21, the support effect of the precast beam 20 is greatly improved.

[0056] Example 3

[0057] The difference between Example 3 and Example 2 is that, as Figure 6 As shown, the diagonal brace 2 is divided into a fixing part 22 located inside the sleeve 1 and a support part 23 located outside the sleeve 1 along its own length direction. The support part 23 is used to fix the end of the first steel strand 4 and to connect the hinge seat 21.

[0058] Both the support part 23 and the fixing part 22 have ear plates 24 at their proximal ends. The two ear plates 24 fit together and are fixed by bolts, i.e., flange connection, to achieve a fixed connection between the support part 23 and the fixing part 22.

[0059] In this way, after the construction is completed, the flange connection between the support part 23 and the fixing part 22 can be disconnected, so that the support part 23, the first steel strand 4, the support rod 42, and the support strip 3 can be removed together, and then the fixing part 22 can be removed from the sleeve 1, thus completing the quick disassembly.

[0060] Example 4

[0061] The difference between Example 4 and Example 2 is that, as Figure 7 , Figure 8 As shown, a fixing plate 25 is fixed to the lower end of the diagonal brace 2, and the fixing plate 25 is set vertically.

[0062] like Figure 8 , Figure 9 As shown, the plate of the diagonal brace 2 that is attached to the sleeve 1 has a through hole 27. The through hole 27 is higher than the slider 41. The bottom of the slider 41 is fixed with a second through tube 412.

[0063] A second steel strand 5 is provided on the diagonal brace 2. Specifically, one end of the second steel strand 5 is fixedly connected to the fixing plate 25. This fixed connection can be achieved by having the end of the second steel strand 5 pass through a hole in the fixing plate 25, and then fixing a rope clamp to the end of the second steel strand 5. The size of the rope clamp is larger than the size of the hole in the fixing plate 25, thereby preventing the second steel strand 5 from detaching from the fixing plate 25. The other end of the second steel strand 5 passes through the through hole 27 of the adjacent diagonal brace 2 in sequence, and is wound around two first steel strands 4 in the direction of the first steel strands 4 (see the winding method). Figure 10 The second steel strand 5 passes through the through hole 27 of another diagonal brace 2 and is fixed to another fixing plate 25. In addition, the second steel strand 5 also passes through the second conduit 412.

[0064] In this way, when the support plate 3 is pressed down and drives the diagonal brace 2 to be further inserted into the sleeve 1, not only the first steel strand 4 will be tightened, but also the second steel strand 5 will be tightened. At this time, the second steel strand 5 will wrap the first steel strand 4 more tightly, so as to force the two first steel strands 4 to move closer to each other and tighten, thereby greatly improving the rigidity of the first steel strand 4, thereby improving the support effect of the first steel strand 4 on the support rod 42 and the slider 41.

[0065] Furthermore, in order to increase the tension of the first steel strand 4 and the second steel strand 5, the following settings are made, such as... Figure 7 , Figure 8 As shown, the plate of the diagonal brace 2 that is attached to the sleeve 1 has a through hole 26, which is used to allow tools such as screwdrivers to be inserted into the sleeve 1.

[0066] The surface of the fixing plate 25 is provided with a conical hole 251, and a tie bolt 6 is connected between the fixing plates 25 of the two diagonal braces 2 of the precast column 10. Specifically, the tie bolt 6 passes through the two conical holes 251 at the same time, and the edge of the screw head of the tie bolt 6 abuts against the hole wall of the conical hole 251 of one of the fixing plates 25. A nut 7 is welded and fixed to the conical hole 251 of the other fixing plate 25, and the tie bolt 6 and the nut 7 cooperate.

[0067] After the precast beam 20 is placed on the support plate 3, the tie bolts 6 are tightened using a bolt cutter or other tools to force the fixing plates 25 on both sides to move closer to each other, thereby forcing the diagonal braces 2 on both sides to insert deeper into the sleeve 1, further tightening the first steel strand 4 and the second steel strand 5, thereby increasing the supporting force of the support rod 42 and improving the overall supporting effect of the structure.

[0068] 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 prefabricated, support-free frame structure, characterized in that: The precast beam (20), support strip (3) and at least two precast columns (10) are included. A sleeve (1) is pre-embedded in the upper part of the precast column (10). The upper end of the sleeve (1) is inclined away from the axis of the precast column (10). A diagonal brace (2) is inserted in the sleeve (1). The upper end of the diagonal brace (2) is hinged to a hinge seat (21). The support strip (3) is horizontally arranged and used to support the bottom surface of the precast beam (20). The two ends of the support strip (3) are respectively provided for the hinge seat (21) of the diagonal brace (2) of the precast column (10) on one side to abut. The hinge seat (21) and the bottom surface of the support strip (3) are slidably connected along the length direction of the precast beam (20). The sleeve (1) is provided on both sides of the width direction of the precast column (10). The lower ends of the two sleeves (1) are connected and the lower ends of the diagonal brace (2) in the two sleeves (1) abut each other.

2. The prefabricated supportless frame structure according to claim 1, characterized in that: A first steel strand (4) is fixedly connected between the upper parts of the adjacent diagonal braces (2) of the two precast columns (10). Multiple sliders (41) are arranged at intervals along the length of the first steel strand (4) on the first steel strand (4). A support rod (42) is connected between the slider (41) and the bottom surface of the support plate (3). The length of each support rod (42) gradually shortens from the middle to both ends of the first steel strand (4).

3. The prefabricated supportless frame structure according to claim 2, characterized in that: The slider (41) has two support rods (42). The lower ends of the two support rods (42) are hinged to the slider (41), and the upper ends of the support rods (42) are hinged to the bottom surface of the support plate (3). The support rods (42) are inclined, and the upper ends of the two support rods (42) are symmetrically arranged with the central axis of the support plate (3) as the center.

4. The prefabricated supportless frame structure according to claim 3, characterized in that: The first steel strand (4) is provided as two strands and is located on both sides of the slider (41) in the width direction. The slider (41) has a first tube (411) on its side for the first steel strand (4) to pass through.

5. The prefabricated supportless frame structure according to claim 4, characterized in that: The lower end of the diagonal brace (2) is fixed with a fixing plate (25). The fixing plate (25) is set vertically. A horizontally set tie bolt (6) is connected between the fixing plates (25) of the two diagonal braces (2) of the precast column (10). A conical hole (251) is opened on the surface of the fixing plate (25). The edge of the screw head of the tie bolt (6) abuts against the hole wall of the conical hole (251) of one of the fixing plates (25). A nut (7) is welded and fixed to the conical hole (251) of the other fixing plate (25). The tie bolt (6) and the nut (7) cooperate.

6. The prefabricated supportless frame structure according to claim 5, characterized in that: It also includes a second steel strand (5), and the diagonal brace (2) is provided with a through hole (27). One end of the second steel strand (5) is fixedly connected to the fixing plate (25), and the other end of the second steel strand (5) passes through the through hole (27) of the adjacent diagonal brace (2) in sequence, winds two first steel strands (4) along the direction of the first steel strand (4), passes through the through hole (27) of another diagonal brace (2), and is fixed on another fixing plate (25).

7. The prefabricated supportless frame structure according to claim 6, characterized in that: The perforation (27) is higher than the slider (41), and the bottom of the slider (41) is fixed with a second tube (412), through which the first steel strand (4) passes.

8. The prefabricated supportless frame structure according to claim 1, characterized in that: The diagonal brace (2) is an I-beam.

9. The prefabricated supportless frame structure according to claim 2, characterized in that: The diagonal brace (2) is divided into a fixed part (22) located inside the sleeve (1) and a support part (23) located outside the sleeve (1) along its own length direction. The fixed part (22) and the support part (23) are fixedly connected by a flange. The first steel strand (4) is fixedly connected to the support part (23). The hinge seat (21) is provided on the support part (23).

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