Large-width gallery bridge unit capable of being disassembled and packaged and construction method of large-width gallery bridge unit

Abstract

The invention discloses a large-width gallery bridge unit capable of being disassembled and packaged and a construction method thereof.The large-width gallery bridge unit comprises a roof unit, a ground unit, stand columns and curtain wall units, the roof unit comprises two roof subframes, and roof cross beams of the two roof subframes are detachably connected; a supporting piece is detachably fixed below the connecting position of the roof cross beam; a pin shaft is rotationally arranged on the supporting piece; vertex angle pieces are arranged at the four corners of the roof frame, a tensioning device is arranged in each vertex angle piece, the tensioning devices on the two sides are connected through a steel strand, and the steel strand penetrates through the lower portion of the pin shaft; the ground unit comprises two ground subframes, and ground cross beams of the two ground subframes are detachably connected; four corners of the ground frame are provided with external corner fittings; the two ends of the stand column are detachably connected with the top corner piece and the outer corner piece correspondingly. The curtain wall unit is installed on the outer vertical face of the large-width gallery bridge unit. The ultra-wide gallery bridge unit can be transported in a split mode, spliced and tensioned, and the problems that the ultra-wide gallery bridge unit is difficult to transport and the splicing rigidity is reduced are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to a gallery bridge unit and a construction method thereof, and in particular to a detachable and packed large-width gallery bridge unit and a construction method thereof. BACKGROUND

[0002] The gallery bridge is widely used in railway overpass, airport boarding gate, wharf boarding and other scenes. The width of the existing assembled gallery bridge unit is usually limited within the scope of truck transportation, so it cannot meet the traffic scenes with large passenger flow and large width requirements. In addition, the existing super-wide gallery bridge unit has great difficulty in transportation, especially in the transportation and assembly process, the structural rigidity is easily affected, resulting in structural deformation problems. SUMMARY

[0003] The first object of the present application is to provide a detachable and packed large-width gallery bridge unit which is convenient for transportation and ensures the assembly rigidity; the second object of the present application is to provide a construction method of the large-width gallery bridge unit.

[0004] Technical scheme: The detachable and packed large-width gallery bridge unit of the present application comprises a roof unit, a ground unit, a support, a column and a curtain wall unit.

[0005] The roof unit comprises a roof frame, the roof frame comprises two roof sub-frames, the roof beams of the two roof sub-frames are detachably connected, and the support is detachably fixed below the roof beam connection position; each roof sub-frame is provided with purlins at the top, and the roof unit is provided with a roof skin at the top of the purlins; the support is provided with a pin shaft rotatingly; each top corner piece is provided with a tensioning device, and the two tensioning devices are connected by a steel strand, the steel strand passes through below the pin shaft, and the tensioning device can tension the steel strand;

[0006] The ground unit comprises a ground frame, the ground frame comprises two ground sub-frames, and the ground beams of the two ground sub-frames are detachably connected; each ground sub-frame is provided with purlins at the top, and the ground unit is provided with a floor on the top of the purlins; each ground frame is provided with an outer corner piece at the four corners;

[0007] The column is fixed with a second bottom plate at both ends, and the second bottom plates at both ends are detachably connected with the top corner piece and the outer corner piece respectively;

[0008] The curtain wall unit is installed on the outer facade of the large-width gallery bridge unit.

[0009] Furthermore, the corner piece includes a corner piece frame, with a front panel and a back panel fixed on both sides of the corner piece frame, and an inclined partition fixed inside the corner piece frame; the tensioning device includes a torque wrench bit, a driving gear, a driven gear, a high-strength threaded rod, and a head anchor; an anchoring end is installed on the back panel, and a bearing is rotatably installed between the anchoring end and the front panel; a tensioning force-applying end is fixed to one end of the bearing extending out of the front panel, and the outer end of the tensioning force-applying end has a tensioning force-applying hole adapted to the torque wrench bit; the driving gear is fixed on the bearing, the high-strength threaded rod is fixed to the back side of the driven gear, and the other end of the high-strength threaded rod passes through the inclined partition and is threadedly connected to the head anchor; the driving gear and the driven gear mesh; the steel strand passes through the corner piece frame and is connected to the head anchor.

[0010] Furthermore, torque screwdriver bits have weak areas; when the torque caused by tensioning reaches the design value, the weak areas of the torque screwdriver bit break.

[0011] Furthermore, the purlins at the top of each roof frame are installed at a certain slope.

[0012] Furthermore, a light steel keel is installed at the bottom of the roof frame, and a ceiling panel is installed at the bottom of the light steel keel.

[0013] Furthermore, a rainwater hopper is installed at the lowest point of the roof unit, and a drain pipe connected to the rainwater hopper is installed below it.

[0014] Furthermore, the second base plate is fixedly connected to the top corner piece or the outer corner piece by bolts.

[0015] Furthermore, the support is fixed to the first base plate; the roof beams of the two roof sub-frames are nested in sequence on a nested tube and fixed with self-tapping screws; the first base plate is fixed to the bottom of the two roof beams and the nested tube with self-tapping screws; the splicing method between the ground beams is the same as that of the roof beams.

[0016] Furthermore, slots are pre-drilled on the roof frame for steel strands to pass through.

[0017] The method for constructing a detachable and packageable wide-width corridor bridge unit according to the present invention includes the following steps:

[0018] S1: Install the roof unit, which is assembled upside down on site;

[0019] S2: Install the ground unit and columns. The ground unit is installed upright on the support.

[0020] S3: Hoist the roof unit and connect and fix the roof unit to the column;

[0021] S4: Temporary supports are installed between the ground unit and the support components, and the steel strands are tensioned; after tensioning is completed, the temporary supports are removed;

[0022] S5: Install curtain wall units.

[0023] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) The roof frame and the ground frame are each divided into two halves, which are transported to the construction site and then assembled, thus solving the problem of transportation difficulties of the ultra-wide corridor bridge unit; (2) Through prestressing tensioning, the problem of stiffness reduction caused by assembly is solved, thus ensuring the structural stability and safety of the corridor bridge unit. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a detachable and packageable wide-width corridor bridge unit provided in an embodiment of the present invention;

[0025] Figure 2 This is a structural schematic diagram of the roof unit in an embodiment of the present invention;

[0026] Figure 3 yes Figure 2 Section 1-1;

[0027] Figure 4 yes Figure 3 Section 2-2;

[0028] Figure 5 yes Figure 3 Section 3-3;

[0029] Figure 6 and Figure 7 These are schematic diagrams of the top corner component from different perspectives in embodiments of the present invention;

[0030] Figure 8 This is a schematic diagram of the tensioning device in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the meshing structure between the driving gear and the driven gear in an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the roof subframe structure in an embodiment of the present invention;

[0033] Figure 11 This is an assembly diagram of the roof unit in an embodiment of the present invention;

[0034] Figure 12 This is an assembly diagram of the wide-width corridor bridge unit in an embodiment of the present invention. Detailed Implementation

[0035] The invention will now be further described with reference to the accompanying drawings.

[0036] Appendix Figures 1 to 12 The accompanying figure labels are as follows:

[0037] 1. Temporary support; 2. Purlin; 3. Left roof beam; 4. Right roof beam; 5. Corner bracket; 6. Support component; 7. Roof cladding; 8. Roof longitudinal beam; 9. Column; 10. Secondary beam; 11. Left ground beam; 12. Right ground beam; 13. Ground longitudinal beam; 14. Rainwater hopper; 15. Drainage pipe; 16. Steel strand; 17. Light steel keel; 18. Ceiling panel; 19. External corner bracket; 20. Internal corner bracket; 21. Curtain wall unit; 22. Support pier; 2 3. Tensioning hole; 24. Pin; 25. Groove; 27. First base plate; 28. Second base plate; 29. ​​Self-tapping screw; 30. Bolt; 31. Nested tube; 33. Weak area; 34. Torque bit; 35. Anchoring end; 36. Front panel; 37. Back panel; 38. Corner frame; 39. Drive gear; 40. Driven gear; 41. Tensioning end; 42. High-strength threaded rod; 43. Anchor head; 44. Diagonal diaphragm; 45. Bearing.

[0038] like Figures 1 to 12 As shown, this embodiment of the invention provides a detachable and packageable wide-width corridor bridge unit, including a roof unit, a ground unit, a support member 6, a column 9, a curtain wall unit 21, and a tensioning device.

[0039] The roof unit includes a roof frame, which is composed of two symmetrically joined roof sub-frames. For example... Figure 10 As shown, one roof sub-frame is assembled by welding together the left roof beam 3, the roof longitudinal beam 8, the secondary beam 10, and the corner piece 5. The other roof sub-frame is assembled by welding together the right roof beam 4, the roof longitudinal beam 8, the secondary beam 10, and the corner piece 5. Purlins 2 are installed at the top of each roof sub-frame at a certain slope (e.g., 2%), and roof cladding 7 is fixed to the top of the purlins 2 of each roof unit. Light steel keel 17 is installed at the bottom of the roof frames, and ceiling panels 18 are installed at the bottom of the light steel keel 17.

[0040] A rainwater hopper 14 is installed at the lowest point of the roof unit, and a drain pipe 15 connected to the rainwater hopper 14 is installed below it.

[0041] Similarly, the ground unit includes a ground frame, which is symmetrically assembled from two ground sub-frames. One ground sub-frame is assembled by welding together a left ground beam 11, a longitudinal ground beam 13, a secondary beam 10, an outer corner piece 19, and an inner corner piece 20. The other ground sub-frame is assembled by welding together a right ground beam 12, a longitudinal ground beam 13, a secondary beam 10, an outer corner piece 19, and an inner corner piece 20. Purlins 2 are installed on the top of each ground sub-frame, and flooring is laid on top of the purlins 2 of the ground unit.

[0042] The roof subframe and its purlins 2 are prefabricated in the factory, as are the ground subframe and its purlins 2.

[0043] likeFigures 2 to 5 As shown, second base plates 28 are welded and fixed to both ends of the column 9. The upper second base plate 28 is fixedly connected to the top corner piece 5 by bolts 30, and the lower second base plate 28 is fixedly connected to the outer corner piece 19 by bolts 30. The support piece 6 is welded and fixed to the first base plate 27. Figure 4 As shown, when the two roof sub-frames are assembled, the right roof beam 4 is nested outside the nested tube 31, and the left roof beam 3 is nested outside the right roof beam 4. The left roof beam 3, the right roof beam 4, and the nested tube 31 are fixed together with self-tapping screws 29. The first base plate 27 is fixed to the bottom of the left roof beam 3, the right roof beam 4, and the nested tube 31 with self-tapping screws 29. A pin 24 is rotatably mounted on the support member 6.

[0044] The splicing method between the left ground beam 11 and the right ground beam 12 is the same as that between the left roof beam 3 and the right roof beam 4, and will not be described in detail here. After the left ground beam 11 and the right ground beam 12 are spliced, the span is relatively large, and the inner corner piece 20 serves as a supporting node.

[0045] The tensioning device is installed in the top corner piece 5. For example... Figures 6 to 9 As shown, the corner piece 5 includes a corner piece frame 38. The front panel 36 and the back panel 37 are fixed to both sides of the corner piece frame 38 by self-tapping screws 29. An inclined partition 44 is welded and fixed inside the corner piece frame 38.

[0046] The tensioning device includes a torque wrench 34, an anchoring end 35, a driving gear 39, a driven gear 40, a tensioning force-applying end 41, a high-strength threaded rod 42, a head anchor 43, a bearing 45, and steel strand 16. The anchoring end 35 is mounted on the back panel 37 for positioning the bearing 45. The bearing 45 is rotatably mounted between the anchoring end 35 and the front panel 36. The tensioning force-applying end 41 is fixedly connected to the end of the bearing 45 extending out of the front panel 36, and its outer end has a tensioning force-applying hole 23 adapted to the torque wrench 34. The driving gear 39 is fixed to the bearing 45 and can rotate with it. The high-strength threaded rod 42 is welded and fixed to the back side of the driven gear 40. The other end of the high-strength threaded rod 42 passes through the inclined partition 44 and is threadedly connected to the head anchor 43. The driving gear 39 meshes with the driven gear 40.

[0047] One end of the steel strand 16 passes through the corner frame 38 and connects to the anchor 43. The other end of the steel strand 16 passes under the pin 24, then passes into the corner frame 38 on the other side and connects to the anchor 43 on the other side. A slot 25 is reserved on the roof frame for the steel strand 16 to pass through.

[0048] The tensioning principle of the tensioning device for the steel strand 16 is as follows: The torque bit 34 is inserted into the tensioning force hole 23 and rotates. The driving gear 39 rotates accordingly, driving the driven gear 40 to rotate. The driven gear 40 drives the high-strength threaded rod 42 to rotate. The high-strength threaded rod 42 screws into the anchor head 43. Because the driven gear 40 is limited by the inclined diaphragm 44, the anchor head 43 moves towards the inclined diaphragm 44, thus achieving tensioning of the steel strand 16. During the tensioning of the steel strand 16, the pin 24 acts as a fulcrum, providing a downward force to the steel strand 16. The torque bit 34 has a weak area 33. When the torque caused by tensioning reaches the design value, the weak area 33 of the torque bit 34 breaks, achieving controllable tension force.

[0049] Curtain wall unit 21 is installed on the exterior facade of the wide corridor bridge unit, serving both aesthetic and protective purposes. During installation, it is fixed to the columns 9, roof frame, and ground frame using self-tapping screws or rivet nuts. After fixing, sealant is applied to the joints.

[0050] The construction method of the wide-width corridor bridge unit according to the embodiments of the present invention includes the following steps:

[0051] S1: Install the roof unit. The roof unit is assembled upside down on site.

[0052] like Figure 11 As shown, the roof frame is first formed by connecting the left roof beam 3 and the right roof beam 4. The support member 6 is then fixed together with the left roof beam 3 and the right roof beam 4. The roof frame is then placed on the roof skin 7, and the roof skin 7 is connected to the purlins 2 of the roof unit by continuous spot welding. Subsequently, the steel strands 16 are threaded through and initially tensioned (just tighten them).

[0053] S2: Install the ground unit and column 9. The ground unit is installed upright on the support 22.

[0054] First, connect the left horizontal beam 11 and the right horizontal beam 12 to form a ground frame. Then, lay the floor on the purlins 2 of the ground unit and install the columns 9 on the ground unit.

[0055] S3: Hoist the roof unit and connect and fix the roof unit to the column 9.

[0056] S4: Temporary support 1 is set between the ground unit and the support 6. The steel strand 16 is tensioned until the weak area 33 of the torque wrench head 34 breaks. After tensioning is completed, the temporary support 1 is removed and the light steel keel 17 and ceiling board 18 are installed.

[0057] S5: Install curtain wall unit 21.

Claims

1. A detachable and packable wide-width walkway unit, characterized in that, It includes roof units, ground units, support components (6), columns (9) and curtain wall units (21); The roof unit includes a roof frame, which includes two roof sub-frames. The roof beams of the two roof sub-frames are detachably connected. The support member (6) is detachably fixed below the connection position of the roof beam. A purlin (2) is installed on the top of each roof sub-frame. A roof covering (7) is fixed on the top of the purlin (2) of the roof unit. A pin (24) is rotatably installed on the support member (6). The four corners of the roof frame have corner pieces (5). A tensioning device is installed in each corner piece (5). The tensioning devices on both sides are connected by steel strands (16). The steel strands (16) pass through the pin (24) from below. The tensioning device can tension the steel strands (16). The ground unit includes a ground frame, which includes two ground sub-frames, and the ground beams of the two ground sub-frames are detachably connected; purlins (2) are installed on the top of each ground sub-frame, and flooring is laid on the top of the purlins (2) of the ground unit; the ground frame has corner pieces (19) at its four corners. The column (9) has a second base plate (28) fixed at both ends. The second base plate (28) at both ends is detachably connected to the top corner piece (5) and the outer corner piece (19) respectively. The curtain wall unit (21) is installed on the exterior of the wide-width corridor unit.

2. The detachable and packable wide-width corridor bridge unit according to claim 1, characterized in that, The corner piece (5) includes a corner piece frame (38), with a front panel (36) and a back panel (37) fixed on both sides of the corner piece frame (38), and an inclined partition (44) fixed inside the corner piece frame (38); the tensioning device includes a torque wrench (34), a drive gear (39), a driven gear (40), a high-strength threaded rod (42), and a head anchor (43), with an anchoring end (35) installed on the back panel (37), and a bearing (45) rotatably installed between the anchoring end (35) and the front panel (36), the bearing (45) extending out of the front panel (36). One end of 36) is fixed with a tensioning end (41), and the outer end of the tensioning end (41) has a tensioning hole (23) adapted to the torque bit (34); the driving gear (39) is fixed on the bearing (45), the high-strength threaded rod (42) is fixed on the back side of the driven gear (40), and the other end of the high-strength threaded rod (42) passes through the inclined partition (44) and is threaded to the anchor head (43). The driving gear (39) meshes with the driven gear (40); the steel strand (16) passes through the corner frame (38) and is connected to the anchor head (43).

3. The detachable and packable wide-width corridor bridge unit according to claim 2, characterized in that, The torque bit (34) has a weak area (33). When the torque caused by tensioning reaches the design value, the weak area (33) of the torque bit (34) breaks.

4. The detachable and packable wide-width corridor bridge unit according to claim 1, characterized in that, The purlins (2) at the top of each roof frame are installed at a certain slope.

5. The detachable and packable wide-width corridor bridge unit according to claim 1, characterized in that, A light steel keel (17) is installed at the bottom of the roof frame, and a ceiling board (18) is installed at the bottom of the light steel keel (17).

6. The detachable and packageable wide-width corridor bridge unit according to claim 1, characterized in that, A rainwater hopper (14) is installed at the lowest point of the roof unit, and a drain pipe (15) connected to the rainwater hopper (14) is installed below it.

7. The detachable and packable wide-width corridor bridge unit according to claim 1, characterized in that, The second base plate (28) is fixedly connected to the top corner piece (5) or the outer corner piece (19) by bolts (30).

8. The detachable and packageable wide-width corridor bridge unit according to claim 1, characterized in that, The support (6) is fixed on the first base plate (27); the roof beams of the two roof sub-frames are nested in a nested tube and fixed by self-tapping screws (29); the first base plate (27) is fixed to the bottom of the two roof beams and the nested tube by self-tapping screws (29); the splicing method between the ground beams is the same as that of the roof beams.

9. The detachable and packable wide-width corridor bridge unit according to claim 1, characterized in that, The roof frame has pre-drilled slots (25) for steel strands (16) to pass through.

10. A method for constructing a detachable and packable wide-width walkway unit according to any one of claims 1 to 9, characterized in that, The steps include the following: S1: Install the roof unit, which is assembled upside down on site; S2: Install the ground unit and column (9), with the ground unit installed upright on the support (22); S3: Hoist the roof unit and connect and fix the roof unit to the column (9); S4: Temporary support (1) is set between the ground unit and the support (6), and the steel strand (16) is tensioned; after tensioning is completed, the temporary support (1) is removed. S5: Install curtain wall units (21).

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