Connecting structure of buffering composite beam
By combining the expansion cylinder, separation block, and extension block in the buffer composite beam connection structure, the problem of mutual compression of prefabricated components due to displacement is solved, thereby improving the seismic performance and durability of the structure.
Patent Information
- Application Number
- CN202422860039.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The problem of deformation and damage caused by the mutual compression of adjacent precast components due to changes in the spacing of expansion joints caused by limited displacement of precast components.
The structure employs a buffer composite beam connection, including positioning anchors and buffer components. Through the combination of expansion cylinders, separation blocks, and extension blocks, the flexible sleeve is allowed to expand when the upper composite component expands, reducing the impact of expansion on the movable range and preventing compression between adjacent composite beams.
This effectively avoids deformation and damage to adjacent composite beams caused by expansion, thus improving the seismic performance and durability of the structure.
Smart Images
Figure CN223562011U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge connecting structure technical field especially, relates to a connecting structure of buffer combination beam. BACKGROUND
[0002] The combination beam is a kind of beam combined by steel beam and concrete slab through connecting piece, and the combination beam improves the bearing capacity and rigidity of beam, simultaneously reduces the amount of steel, reduces engineering cost, due to temperature change, load action or earthquake and other factors, bridge can occur expansion, bending or torsion and other deformations, by allowing the limited movement of combination beam, can reduce the stress concentration in structure, improve the seismic performance and durability of structure.
[0003] Flexible sleeve is arranged between prefabricated slab and concrete slab, to provide appropriate slip amount between prefabricated slab and concrete slab, reduce the tensile stress of concrete slab, improve the long-term performance and durability of concrete slab, and prevent concrete slab from being damaged.
[0004] When the concrete slab expands due to temperature increase, the diameter of the hole on the concrete slab expands, so the displacement amount of the limited displacement of the concrete slab increases, and the displaceable amount of the concrete slab exceeds the width of the expansion joint between adjacent concretes, so that the adjacent concrete slabs are extruded, deformed and damaged. SUMMARY
[0005] The utility model discloses a connecting structure of buffer combination beam to solve the problem that the limited displacement of prefabricated part reduces expansion joint spacing change, so that adjacent prefabricated parts are extruded, deformed and damaged.
[0006] The technical scheme of the utility model discloses a connecting structure of buffer combination beam, which comprises lower layer combination part and upper layer combination part, the top of the lower layer combination part is poured with the upper layer combination part, and further comprises:
[0007] The positioning anchor comprises a nail column, an end cap, an expansion cylinder, a separation block and an expansion block, the top of the end cap is slidably connected with the nail column, the top of the nail column is slidably connected with the expansion cylinder, the top of the expansion cylinder is in contact with the upper layer combination part, the middle part of the end cap is threadedly connected with the separation block, the bottom of the end cap is provided with a buffer assembly between the separation block, and the outer wall of the separation block is in contact with the expansion block.
[0008] The top of the nail column is fixedly connected with the upper layer combination part, the bottom of the end cap is fixedly connected with the lower layer combination part, the top of the lower layer combination part is fixedly provided with a flexible sleeve, and the flexible sleeve is sleeved on the middle part of the nail column.
[0009] Optionally, the plurality of expansion blocks are arranged in a ring shape at equal angles along the end cap, the separation block has a hollow truncated cone shape, the plurality of expansion blocks form a cylindrical structure, and the arc surface of the separation block is attached to the inner wall of the expansion block.
[0010] Optionally, a plurality of guide rods are fixedly installed at the middle part of the end cap, the number of the guide rods is the same as that of the expansion blocks, and the expansion blocks slide on the guide rods.
[0011] Optionally, the expansion cylinder is located at the top center of the nail column, a top embedding groove is formed in the expansion cylinder, the cross section of the embedding groove has a convex shape, and the upper assembly is poured into the embedding groove at the top of the expansion cylinder.
[0012] Optionally, an insertion rod is fixedly installed at the bottom of the expansion cylinder, the end cap has a T-shaped structure, a gap hole is formed in the horizontal part of the nail column, the insertion rod penetrates through the horizontal part of the nail column from the gap hole, the diameter of the gap hole is larger than that of the insertion rod, and the bottom of the insertion rod is connected with the separation block through a buffer assembly.
[0013] Optionally, the buffer assembly comprises a threaded sleeve, an insertion plate and a conversion ring, the threaded sleeve is threadedly connected to the middle part of the end cap and above the separation block, the top of the threaded sleeve is rotationally connected with the conversion ring, the top of the conversion ring is fixedly connected with the insertion rod, the bottom of the threaded sleeve is fixedly installed with the insertion plate, the top of the separation block is provided with an insertion hole, and the insertion plate slides up and down in the insertion hole of the separation block.
[0014] Optionally, a second thread is formed in the connection part between the end cap and the threaded sleeve, a first thread is formed in the threaded connection part between the end cap and the separation block, the second thread is located above the first thread, and the pitch of the second thread is longer than that of the first thread.
[0015] Optionally, an extension cylinder is fixedly installed at the bottom of the conversion ring, an embedding opening is formed in the inner wall of the threaded sleeve and close to the conversion ring, the extension cylinder rotates in the embedding opening in the inner wall of the threaded sleeve, and a spacing exists between the extension cylinder and the embedding opening.
[0016] Compared with the prior art, the application has at least one of the following beneficial technical effects:
[0017] The expansion cylinder is pushed down by the expansion of the upper assembly, so that the separation block moves down and expands the plurality of expansion blocks, when the holes on the upper assembly expand after expansion, the expansion blocks are used to expand the flexible sleeve, the influence of the expansion of the upper assembly on the movable range is reduced, the movable range of the upper assembly is prevented from being too large due to the expansion of the holes, the two adjacent composite beams are prevented from being extruded and deformed and damaged.
[0018] Further, by the design that the pitch of the second thread is longer than the pitch of the first thread, the long pitch of the second thread is used to rotate the sleeve under force, the sleeve is driven to rotate synchronously by the insertion hole, and the short pitch of the first thread is used to improve the stability of the position of the separation block, so that the reaction force applied by the expansion block to the separation block is prevented from moving the separation block, that is, the stability of the position of the expansion block is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 Give the overall structure schematic diagram of an embodiment of the utility model;
[0020] Figure 2 Give the upper assembly structure separation state schematic diagram of an embodiment of the utility model;
[0021] Figure 3 Give the flexible sleeve structure schematic diagram of an embodiment of the utility model;
[0022] Figure 4 Give the expansion block structure schematic diagram of an embodiment of the utility model;
[0023] Figure 5 Give the pin column structure cross-sectional view schematic diagram of an embodiment of the utility model;
[0024] Figure 6 For Figure 5 The second thread structure of part A is enlarged and schematically shown;
[0025] Figure 7 Give the separation block structure schematic diagram of an embodiment of the utility model;
[0026] Figure 8 Give the sleeve structure main view cross-sectional view schematic diagram of an embodiment of the utility model.
[0027] Reference signs: 1, lower assembly; 2, upper assembly; 3, positioning anchor; 31, end cap; 32, pin column; 33, expansion barrel; 34, insertion rod; 35, separation block; 36, first thread; 37, expansion block; 38, guide rod; 4, flexible sleeve; 5, buffer assembly; 51, sleeve; 52, second thread; 53, insertion plate; 54, insertion hole; 55, conversion ring; 56, extension barrel; 57, embedded opening. DETAILED DESCRIPTION
[0028] The technical solutions of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.
[0029] The components of the embodiments of the present application generally described and illustrated in the drawings herein can be arranged and designed in a wide variety of different configurations. Therefore, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, but merely represents selected embodiments of the application.
[0030] Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] The present embodiment proposes a connecting structure of a buffer composite beam, as shown in Figure 1 and Figure 2 , comprising a lower layer composite 1 and an upper layer composite 2, the top of the lower layer composite 1 is poured with the upper layer composite 2, and a positioning anchor 3 is arranged between the lower layer composite 1 and the upper layer composite 2, the positioning anchor 3 connects the lower layer composite 1 and the upper layer composite 2 together.
[0034] As shown in Figure 4 and Figure 5As shown, the positioning anchor 3 comprises a nail column 32, an end cap 31, an expansion cylinder 33, a separation block 35 and an expansion block 37, the top end of the end cap 31 is in sliding connection with the nail column 32, the top end of the nail column 32 is in sliding connection with the expansion cylinder 33 up and down, the expansion cylinder 33 is located at the top center of the nail column 32, the top of the expansion cylinder 33 is provided with an embedded groove, the cross section of the embedded groove adopts a convex structure, the upper layer assembly 2 is poured into the embedded groove at the top of the expansion cylinder 33, so that the expansion cylinder 33 is connected with the upper layer assembly 2, when the upper layer assembly 2 is deformed due to temperature influence, the expansion cylinder 33 moves with the upper layer assembly 2, the cross section of the embedded groove adopts a convex structure, preventing the concrete from separating from the embedded groove, and improving the connection stability.
[0035] As shown in Figure 3 and Figure 5 , the top of the lower layer assembly 1 is fixedly provided with a flexible sleeve 4, the flexible sleeve 4 is sleeved on the middle part of the nail column 32, the top of the expansion cylinder 33 is in contact with the upper layer assembly 2, the middle part of the end cap 31 is threadedly connected with the separation block 35, the bottom of the end cap 31 is provided with a buffer assembly 5 between the end cap 31 and the separation block 35, the bottom of the expansion cylinder 33 is fixedly provided with a plug rod 34, the end cap 31 adopts a T-shaped structure, the horizontal part of the nail column 32 is provided with a clearance hole, the plug rod 34 penetrates through the horizontal part of the nail column 32 from the clearance hole, the diameter of the clearance hole is larger than that of the plug rod 34, and the bottom of the plug rod 34 is connected with the separation block 35 through the buffer assembly 5.
[0036] When the upper layer assembly 2 expands, the expansion cylinder 33 is subjected to the downward thrust of the expansion of the upper layer assembly 2, the expansion cylinder 33 moves downward and presses the separation block 35 downward through the buffer assembly 5, the separation block 35 rotates along the end cap 31 and moves downward. When the upper layer assembly 2 has been displaced, the plug rod 34 will not be stuck due to the clearance hole in the horizontal part of the nail column 32.
[0037] As shown in Figure 5 and Figure 7 , the outer wall of the separation block 35 is in contact with the expansion block 37, the expansion block 37 is provided in plurality and is distributed in a ring shape at equal angles along the end cap 31, the separation block 35 adopts a hollow circular truncated cone structure, the plurality of expansion blocks 37 form a cylindrical structure, and the curved surface of the separation block 35 is attached to the inner wall of the expansion block 37.
[0038] The top of the lower assembly 1 is fixedly installed with a flexible sleeve 4, a nail column 32 passes through the center of the flexible sleeve 4, and the flexible sleeve 4 is in contact with the upper assembly 2. The expansion block 37 is extruded by the separation block 35 to move away from the end cap 31, thereby expanding the flexible sleeve 4. Since the thermal expansion coefficient of general metal is less than that of concrete, under the same temperature change, the length change amount of the concrete is greater than that of the metal nail column, resulting in that the hole deformation amount on the upper assembly 2 is greater than that of the nail column. Therefore, the expansion block 37 is expanded to reduce the influence of the hole expansion on the upper assembly 2, avoid the hole expansion on the upper assembly 2 to increase the movable range, and make the two adjacent composite beams extrude each other to deform and damage. At the same time, the expansion block 37 expands the flexible sleeve 4 to make it adhere to the upper assembly 2, thereby increasing the resistance of the upper assembly 2 to move.
[0039] A plurality of guide rods 38 are fixedly installed at the middle part of the end cap 31, the number of the guide rods 38 is the same as that of the expansion blocks 37, the expansion blocks 37 slide on the guide rods 38, and the guide rods 38 guide the expansion blocks 37.
[0040] In the embodiment, the expansion cylinder 33 is pushed downward by the expansion force of the upper assembly 2, so that the expansion cylinder 33 moves downward and presses the buffer assembly 5 to push the separation block 35 downward, the separation block 35 rotates along the end cap 31 and moves downward, and the separation block 35 expands the plurality of expansion blocks 37. When the hole on the upper assembly 2 expands after expansion, the expansion block 37 is used to expand the flexible sleeve 4, thereby reducing the influence of the expansion of the upper assembly 2 on the movable range, avoiding the hole expansion on the upper assembly 2 to increase the movable range, and making the two adjacent composite beams extrude each other to deform and damage.
[0041] In the embodiment, the expansion cylinder 33 is pushed downward by the expansion force of the upper assembly 2, so that the expansion cylinder 33 moves downward and presses the buffer assembly 5 to push the separation block 35 downward, the separation block 35 rotates along the end cap 31 and moves downward, and the separation block 35 expands the plurality of expansion blocks 37. When the hole on the upper assembly 2 expands after expansion, the expansion block 37 is used to expand the flexible sleeve 4, thereby reducing the influence of the expansion of the upper assembly 2 on the movable range, avoiding the hole expansion on the upper assembly 2 to increase the movable range, and making the two adjacent composite beams extrude each other to deform and damage. Figure 6 and Figure 8 As shown in FIGS. 1 and 2, the buffer assembly 5 includes a screw sleeve 51, an insertion plate 53, and a conversion ring 55, the middle part of the end cap 31 and above the separation block 35 is threadedly connected with the screw sleeve 51, the top of the screw sleeve 51 is rotationally connected with the conversion ring 55, the top of the conversion ring 55 is fixedly connected with the insertion rod 34, the bottom of the screw sleeve 51 is fixedly installed with the insertion plate 53, and the top of the separation block 35 is provided with an insertion hole 54, and the insertion plate 53 slides up and down at the insertion hole 54 of the separation block 35.
[0042] The screw sleeve 51 is rotated along the second screw thread 52, the second screw thread 52 drives the separation block 35 to rotate through the insertion plate 53, so that the separation block 35 spirally moves downward.
[0043] As shown in FIGS. 1 and 2, the buffer assembly 5 includes a screw sleeve 51, an insertion plate 53, and a conversion ring 55, the middle part of the end cap 31 and above the separation block 35 is threadedly connected with the screw sleeve 51, the top of the screw sleeve 51 is rotationally connected with the conversion ring 55, the top of the conversion ring 55 is fixedly connected with the insertion rod 34, the bottom of the screw sleeve 51 is fixedly installed with the insertion plate 53, and the top of the separation block 35 is provided with an insertion hole 54, and the insertion plate 53 slides up and down at the insertion hole 54 of the separation block 35. Figure 6As shown, the second thread 52 is arranged at the joint of the end cap 31 and the sleeve 51, and the first thread 36 is arranged at the joint of the end cap 31 and the separation block 35, the second thread 52 is above the first thread 36, and the pitch of the second thread 52 is longer than that of the first thread 36.
[0044] Since the separation block 35 is pressed by the extension block 37 through the outer arc surface, the extension block 37 exerts a reaction force on the separation block 35, the separation block 35 is rotated and moved downward along the first thread 36 to reduce the influence of the reaction force, and the pitch of the second thread 52 is longer than that of the first thread 36, the long pitch of the second thread 52 is used to rotate the sleeve 51, the separation block 35 is rotated synchronously by the sleeve 51 through the insertion hole 54, the short pitch of the first thread 36 is used to improve the stability of the position of the separation block 35, and the reaction force exerted by the extension block 37 on the separation block 35 is avoided to move the separation block 35.
[0045] As shown in the drawings, Figure 8 The extension cylinder 56 is fixedly installed at the bottom of the conversion ring 55, the inner wall of the sleeve 51 is arranged with the insertion opening 57 close to the conversion ring 55, the extension cylinder 56 rotates in the insertion opening 57 of the inner wall of the sleeve 51, and there is a spacing between the extension cylinder 56 and the insertion opening 57.
[0046] In the embodiment, the pitch of the second thread 52 is longer than that of the first thread 36, the long pitch of the second thread 52 is used to rotate the sleeve 51, the separation block 35 is rotated synchronously by the sleeve 51 through the insertion hole 54, the short pitch of the first thread 36 is used to improve the stability of the position of the separation block 35, the reaction force exerted by the extension block 37 on the separation block 35 is avoided to move the separation block 35, and the stability of the position of the extension block 37 is improved.
[0047] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.
Claims
1. A connection structure for a buffer composite beam, comprising: A lower assembly (1) and an upper assembly (2), wherein the upper assembly (2) is cast on top of the lower assembly (1), characterized in that it further comprises: The positioning anchor (3) includes a nail post (32), an end cap (31), an expansion cylinder (33), a separation block (35), and an extension block (37). The top end of the end cap (31) is slidably connected to the nail post (32). The top end of the nail post (32) is slidably connected to the expansion cylinder (33). The top of the expansion cylinder (33) is in contact with the upper assembly (2). The middle part of the end cap (31) is threadedly connected to the separation block (35). A buffer assembly (5) is provided between the bottom of the end cap (31) and the separation block (35). The outer wall of the separation block (35) contacts the extension block (37). The top end of the nail post (32) is fixedly connected to the upper assembly (2), the bottom end of the end cap (31) is fixedly connected to the lower assembly (1), and a flexible sleeve (4) is fixedly installed on the top of the lower assembly (1). The flexible sleeve (4) is fitted around the middle of the nail post (32).
2. The connection structure of the buffer composite beam according to claim 1, characterized in that: Multiple extension blocks (37) are provided and are distributed in a ring at equal angles along the end cap (31). Multiple guide rods (38) are fixedly installed at the middle of the end cap (31). The number of guide rods (38) is the same as the number of extension blocks (37). The extension blocks (37) slide on the guide rods (38).
3. The connection structure of the buffer composite beam according to claim 1, characterized in that: The separating block (35) adopts a hollow frustum-shaped structure, and the multiple expansion blocks (37) form a cylindrical structure. The arc surface of the separating block (35) is in contact with the inner wall of the expansion block (37).
4. The connection structure of the buffer composite beam according to claim 1, characterized in that: The expansion cylinder (33) is located at the top center of the nail column (32). The top of the expansion cylinder (33) is provided with an embedding groove. The cross-section of the embedding groove adopts a convex structure. The upper assembly (2) is cast into the embedding groove at the top of the expansion cylinder (33).
5. The connection structure of the buffer composite beam according to claim 1, characterized in that: The bottom of the expansion tube (33) is fixedly installed with a rod (34). The end cap (31) adopts a T-shaped structure. The horizontal part of the nail post (32) is provided with a clearance hole. The rod (34) passes through the horizontal part of the nail post (32) from the clearance hole. The diameter of the clearance hole is larger than the diameter of the rod (34). The bottom of the rod (34) is connected to the separation block (35) through a buffer assembly (5).
6. The connection structure of the buffer composite beam according to claim 5, characterized in that: The buffer assembly (5) includes a threaded sleeve (51), a insert plate (53), and a conversion ring (55). The threaded sleeve (51) is threadedly connected to the middle of the end cap (31) and above the separating block (35). The top of the threaded sleeve (51) is rotatably connected to the conversion ring (55). The top of the conversion ring (55) is fixedly connected to the insert rod (34). The insert plate (53) is fixedly installed at the bottom of the threaded sleeve (51). The top of the separating block (35) has an insertion hole (54). The insert plate (53) slides up and down at the insertion hole (54) of the separating block (35).
7. The connection structure of the buffer composite beam according to claim 6, characterized in that: The end cap (31) is connected to the threaded sleeve (51) with a second thread (52), and the end cap (31) is connected to the separator block (35) with a first thread (36). The second thread (52) is located above the first thread (36), and the pitch of the second thread (52) is longer than the pitch of the first thread (36).
8. The connection structure of the buffer composite beam according to claim 7, characterized in that: An extension cylinder (56) is fixedly installed at the bottom of the conversion ring (55). A slot (57) is provided on the inner wall of the screw sleeve (51) near the conversion ring (55). The extension cylinder (56) rotates at the slot (57) on the inner wall of the screw sleeve (51). There is a gap between the extension cylinder (56) and the slot (57).