Prefabricated corridor, corridor end connecting structure and construction method

Abstract

The application discloses an assembled corridor, comprising upper chord bars, lower chord bars and inclined web bars; an assembled corridor end connecting structure, comprising a corridor, a corbel and a pre-buried part, the upper side of the end of the corridor is connected with a fourth connecting piece, the fourth connecting piece is connected with a main building frame column through a cable assembly; the third connecting piece on the lower side of the end of the corridor is fixed on the top of the corbel through the pre-buried part, and the corbel is fixed on the side of the main building frame column; the lower side and the upper side of the end of the corridor are connected through a support web bar. The application further provides a corridor construction method. The application has the advantages that the corridor is connected by steel components, has high assembly degree and is simple to construct; fasteners are used to connect the components, the node construction process is simple, and the construction quality can be guaranteed; and the cable assembly is designed for anti-falling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structures, in particular to a fabricated gallery, a gallery end connection structure and a construction method. BACKGROUND

[0002] In the current industry, for the consideration of building function or building appearance characteristics, an air gallery is usually arranged between two adjacent buildings as a passage connecting the two buildings. The gallery can improve the internal traffic of the building, enhance the emergency evacuation capacity and enrich the building modeling, and is increasingly widely used in modern buildings.

[0003] For some special requirement buildings, the designed gallery span is large, which requires large-span high-altitude construction, and high-altitude construction has always been a difficulty in the construction field of the building industry. When the gallery height is high, the conventional gallery construction method is to assemble the steel structure gallery on the ground, then set up lifting devices on both sides of the tower to slowly lift the assembled gallery structure. Since the two sides need to be coordinated to avoid tilting, the lifting speed is slow, and the lifting process is greatly affected by environmental factors. Strong winds or heavy rain weather will seriously affect the safety of the lifting process. In addition, the lifting device needs to wait until the main concrete structure on both sides reaches the design strength before construction can be carried out, which seriously delays the construction period and the construction measures are expensive. When the gallery height is low, the conventional construction method is to set up a full scaffold on the ground, then hoist the gallery components to the specified position using a crane, then workers fine-position on the scaffold top construction plane, and after positioning, connect each component into a whole. However, the full scaffold itself has high material costs, and usually the gallery has no underground structure, the ground needs to be hardened to support the scaffold, and the ground hardening range is large. When the soil quality is poor, the bottom surface needs to be treated, further increasing the cost. In addition, in the use process of the large-span gallery, in the case of rare earthquakes, the support is more likely to be damaged, and the gallery is likely to fall off the constraint and collapse; the gallery needs to be provided with anti-falling safety measures to ensure that the large-span gallery does not collapse in extreme conditions. SUMMARY

[0004] The present application aims at the deficiencies of the prior art, and provides a fabricated gallery, a gallery end connection structure and a construction method which are simple to construct.

[0005] The technical scheme adopted by the present application is as follows: an assembled corridor comprises upper chords (1), lower chords (2) and inclined web members (3), the upper chords (1) are two in number and arranged in parallel front to back, and the two upper chords are connected through a plurality of transverse steel beams (12) arranged at intervals; the lower chords (2) are two in number and correspondingly arranged below the upper chords (1), and the two lower chords (2) are connected through a plurality of transverse steel beams (12) arranged at intervals; a plurality of inclined web members (3) are arranged between the upper chords (1) and the lower chords (2) on the same side, the middle inclined web members (3) are connected to the upper chords (1) and the lower chords (2) through first connecting members (22) at both ends, respectively, the end inclined web members (3) are connected to the upper chords (1) through first connecting members (22) at the upper ends, and the end inclined web members (3) are connected to second connecting members (26) at the lower ends, and the second connecting members (26) are connected to third connecting members (31) arranged at the ends of the lower chords (2).

[0006] According to the above scheme, the second connecting member (26) comprises a second connecting member node plate (28), a second connecting member end plate (27) and a second connecting member stiffener (29), the second connecting member node plate (28) is arranged vertically in a trapezoidal shape, and the second connecting member stiffener (29) is symmetrically arranged on both sides of the second connecting member node plate (28); the second connecting member end plate (27) is four in number and fixed to the top, the bottom and the two side portions of the second connecting member node plate (28), wherein the second connecting member end plate (27) on the top is arranged obliquely and connected to the end plate (11) at the end of the inclined web member (3), and the second connecting member end plate (27) on the bottom is arranged horizontally on the upper flange plate of the lower chord (2).

[0007] The present application also provides an end connecting structure of an assembled corridor, which comprises the corridor, a corbel (6) and a pre-buried member (14), the upper side of the end of the corridor is connected to a fourth connecting member (38), the fourth connecting member (38) is connected to a main building frame column (7) through a cable assembly, the third connecting member (31) on the lower side of the end of the corridor is fixed to the top of the corbel (6) through the pre-buried member (14), the corbel (6) is fixed to the side portion of the main building frame column (7), and the lower side and the upper side of the end of the corridor are connected through a support web member (4).

[0008] According to the scheme, the upper chord of the corridor (1) is connected with the fourth connecting piece (38), the two fourth connecting pieces (38) are connected with the end transverse steel beam (12) through the transverse steel beam connecting bracket (13), the lower part of the fourth connecting piece (38) is connected with the upper end of the support web (4), the lower end of the support web (4) is provided with a support web end plate, the support web end plate is connected with the second connecting piece end plate (27) at the top of the second connecting piece (26), the second connecting piece end plate (27) at the bottom of the second connecting piece (26) is arranged on the third connecting piece (31) and is connected through bolts, the inner sides of the two third connecting pieces (31) at the same end are each provided with a transverse steel beam connecting bracket (13), and the transverse steel beam connecting brackets (13) of the two third connecting pieces (31) are connected through the transverse steel beam (12).

[0009] According to the scheme, the embedded part (14) comprises a straight anchor steel bar (19), an embedded steel plate (15) and a bolt sleeve (16), the straight anchor steel bar (19) and the bolt sleeve (15) are embedded in the bracket (6), the upper end of the straight anchor steel bar (19) is connected with the embedded steel plate (15), the bolt sleeve (15) is fixed to the lower part of the embedded steel plate (15), the embedded steel plate (15) is provided with a sleeve hole (17) corresponding to the position of the bolt sleeve (16), and the third connecting piece end plate (32) at the bottom of the third connecting piece (31) is threadedly connected with the bolt sleeve (16) through high-strength bolts (9).

[0010] According to the scheme, the cable assembly comprises a cable fixing disc (45) and a cable (43), the cable fixing disc (45) is fixed in the fourth connecting piece (38), the cable fixing disc (45) is connected with the fourth connecting piece, a corresponding cable hole (44) is formed in the fourth connecting piece, one end of the cable (43) is fixed to the outer wall of the main building frame column (7), and the cable (43) is connected with the cable fixing disc (45) after penetrating through the main building frame column (7) and the corresponding cable hole (44).

[0011] The application also provides a prefabricated corridor construction method, characterized by comprising the following steps:

[0012] Step one, segmenting the corridor as described above, the corridor is divided into a first installation section (60) and a second installation section (62) at the end and a third installation section (61) at the middle, wherein the outer sides of the first installation section (60) and the second installation section (62) are connected with the main structure of the building respectively, and the third installation section (61) is connected with the first installation section (60) and the second installation section (62) respectively; each installation section of the corridor comprises two truss groups (59), the two truss groups (59) are arranged in parallel front and back and are connected through a plurality of transverse steel beams (12).

[0013] Step two, prefabricate each component of the gallery and each connecting piece of the connecting structure of the end of the gallery, and transport to the construction site;

[0014] Step three, on the ground, assemble the truss groups (59) of each gallery installation section in the order of the first installation section (60), the second installation section (62) and the third installation section (61) of the gallery; in the first installation section (60) and the second installation section (62) of the gallery, the end of the lower chord (2) is connected with the second connecting piece (26), and the end of the upper chord (1) is connected with the third connecting piece (31);

[0015] Step four, set up a temporary support structure below the gallery;

[0016] Step five, set up hoisting devices between the two buildings, hoist and connect the two truss groups (59) of the first installation section (60) of the gallery, insert the jacks (58) into the ends of the temporary support structure, adjust the first installation section (60) of the gallery to the designed height by using the jacks (58), and connect and fix the lower chord (2) with the pre-buried piece (14) on the corbel by using the high-strength bolts (9) after the adjustment is completed;

[0017] Step six, complete the construction of the second installation section (62) of the gallery by using the same method;

[0018] Step seven, hoist the third installation section (61) of the gallery, and connect the first installation section (60) and the second installation section (62) at both ends: hoist one truss group (59) of the third installation section (61) of the gallery to the designated position by using the hoisting devices, adjust the position of the truss group (59) by workers, and connect the third installation section (61) of the gallery with the corresponding truss groups (59) of the first installation section (60) and the second installation section (62) into one body by using the high-strength bolts (9); then hoist the other truss group (59) of the third installation section (61) of the gallery to the designated position, and connect it into one body with the corresponding truss groups (59) of the first installation section (60) and the second installation section (62) of the gallery by using the high-strength bolts (9); then fasten and install the two truss groups (59) of the third installation section (61) of the gallery by using the transverse steel beams (12), and install and fasten the inclined web members (3) at the connecting positions of each installation section;

[0019] Step eight, remove the temporary support structure.

[0020] According to the above scheme, when the distance of the gallery from the ground exceeds 12 m in step four, a construction support frame is used as the temporary support structure, the construction support frame is connected with the temporary pre-buried pieces at the ends, and the temporary pre-buried pieces are all embedded in the main building frame columns (7) at the main building floor elevation.

[0021] According to the above scheme, the construction support frame comprises a triangular support base (63) at the lower part and a construction platform at the top part; the top part of the triangular support base (63) is provided with a platform steel beam (55), according to the truss group position of the first installation section (60) or the second installation section (62) of the corridor, two rows of steel pads (56) are arranged on the top member of the platform steel beam (55) or the triangular support base (63) for supporting the truss group (59); the jack (58) passes through between the two steel pads (56) at the end; a protective steel plate (57) is laid on the platform steel beam (55) to form a construction platform; the triangular support base (63) comprises two groups of triangular support frames arranged in parallel front and back, and the two groups of triangular support frames are connected through horizontal rods; each triangular support frame comprises a horizontal top rod (54), a vertical side rod, an inclined rod and a middle connecting rod (53) welded as a whole, a bottom connecting rod (52) is welded at the lower end of the vertical side rod, and each rod member is a square steel tube; and the horizontal top rod (54), the middle connecting rod (53) and the bottom connecting rod (52) are temporary support connecting members connected with temporary embedded parts.

[0022] According to the above scheme, when the distance of the corridor from the ground is less than 12m, a construction temporary jig frame is used as a temporary support structure; the construction temporary jig frame (64) comprises a jig base, a cross frame (37) arranged at the top of the jig base, steel pads (56) arranged at intervals on the cross frame (37), and a jack (58) extending from between two steel pads (56); the jig base comprises vertical steel members (65), horizontal steel members (35) and inclined steel members (36); the vertical steel members (65) are four in number and arranged in pairs side by side, and adjacent two vertical steel members (65) are connected through horizontal steel members (35) arranged at intervals in the height direction; inclined steel members (36) are arranged between upper and lower adjacent horizontal steel members (35).

[0023] The beneficial effects of the present application are:

[0024] 1. The corridor structure has high assembly degree and simple construction; the end forms of each steel member are single, which provides feasibility for factory assembly line production; after batch production of the members, manpower and material resources can be significantly reduced, the construction period can be greatly shortened, and the structure cost can be reduced.

[0025] 2. The on-site node construction process is simple, and the construction quality can be guaranteed; all nodes of the present application are connected by fasteners, which can significantly reduce the difficulty of high-altitude operation; secondly, the tightening tool of the fastener is simple, and the on-site safety management difficulty is small; finally, only fasteners are used for connection, the construction period is significantly shortened, and the node construction quality can be guaranteed.

[0026] 3、The present application designs the anti-falling measure, safe and reliable. In the extreme condition of rare earthquake, the existing corridor often will be because the deformation difference of two sides of building is too large, lead to support damage, cause the collapse of the corridor to fall and cause heavy casualties and property losses. The cable component designed for anti-falling in the present application can effectively prevent the direct collapse of the corridor in the event of earthquakes and the like, limit the loss within a controllable range, and enhance the safety and reliability of the corridor.

[0027] 4、The present application has less construction measure cost, and the fabricated structure is more conducive to the implementation of the construction scheme. The corridor truss is split into multiple sections for lifting in the present application, which significantly reduces the lifting weight. Whether using ground cranes or roof lifting, the difficulty is significantly reduced, saving time and a large amount of manpower and material resources. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The present application is a schematic diagram of the corridor structure and its connection.

[0029] Figure 2 The present application is a schematic diagram of the connection of each member of the corridor.

[0030] Figure 3 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam.

[0031] Figure 4 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam. Figure 3

[0032] Figure 5 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam.

[0033] Figure 6 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam.

[0034] Figure 7 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam. Figure 6

[0035] Figure 8 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam.

[0036] Figure 9 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam. Figure 8

[0037] The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam. Figure 10

[0038] The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam. Figure 11

[0039] The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam. Figure 12 Figure 11 The present application is a schematic diagram of the connection of the upper chord, diagonal web member and transverse steel beam.

[0040] ​​​Figure 13 Figure 1 is a schematic diagram of a truss set for a first installation section of a colonnade.

[0041] Figure 14 Figure 2 is a schematic diagram of a truss set for a second installation section of a colonnade.

[0042] Figure 15 Figure 3 is a schematic diagram of a truss set for a third installation section of a colonnade.

[0043] Figure 16 Figure 4 is a schematic diagram of a construction state using a construction support frame as a temporary support.

[0044] Figure 17 Figure 5 is a schematic diagram of a construction support frame.

[0045] Figure 18 Figure 6 is a schematic diagram of a structure of a temporary embedded part.

[0046] Figure 19 Figure 7 is a schematic diagram of an exploded view of a temporary embedded part.

[0047] Figure 20 Figure 8 is a schematic diagram of a construction state using a construction temporary jig frame as a temporary support.

[0048] Figure 21 Figure 9 is a schematic diagram of a structure of a construction temporary jig frame.

[0049] 1. upper chord, 2. lower chord, 3. diagonal web member, 4. support web member, 5. chord end plate, 6. bracket, 7. main building frame column, 8. main building frame beam, 9. high-strength bolt, 10. bolt hole, 11. end plate, 12. transverse steel beam, 12. transverse steel beam, 13. transverse steel beam connecting bracket, 14. embedded part, 15. embedded steel plate, 16. bolt sleeve, 17. sleeve hole, 18. shear key, 19. straight anchor steel bar, 20. anchor bar end plate, 21. stiffening rib, 22. first connecting piece, 23. first connecting piece end plate, 24. first connecting piece node plate, 25. first connecting piece stiffening plate, 26. second connecting piece, 27. second connecting piece end plate, 28. second connecting piece node plate, 29. second connecting piece stiffening plate, 30. support support stiffening rib, 31. third connecting piece, 32. third connecting piece end plate, 33. third connecting piece node plate, 34. third connecting piece stiffening plate, 35. horizontal steel member, 36. diagonal steel member, 37. cross, 38. fourth connecting piece, 39. fourth connecting piece end plate, 40. fourth connecting piece node plate, 41. fourth connecting piece stiffening plate, 42. support steel plate, 43. anti-falling cable, 44. cable hole, 45. cable fixing disc, 46. temporary anchor bar, 47. temporary shear key, 48. temporary stiffening rib, 49. temporary embedded connecting piece, 50. temporary end plate, 51. diagonal rod, 52. bottom connecting rod, 53. middle connecting rod, 54. horizontal top rod, 55. platform steel beam, 56. steel gasket, 57. protective steel plate, 58. jack, 59. truss group, 60. first installation section of corridor, 61. third installation section of corridor, 62. second connecting section of corridor, 63. triangular support foundation, 64. construction temporary jig, 65. vertical steel member. DETAILED DESCRIPTION

[0050] In order to better understand the present application, the present application will be further described below in conjunction with the drawings and specific embodiments.

[0051] As Figures 1-4 shown in a prefabricated corridor, comprising upper chord 1, lower chord 2 and diagonal web member 3, the upper chord 1 has two, parallel arrangement from front to back, two through a number of interval setting transverse steel beam 12 connected; the lower chord 2 has two, corresponding to the lower chord 1 is arranged below, two lower chord 2 through a number of interval setting transverse steel beam 12 connected; the same side of the upper chord 1 and lower chord 2 between the arrangement of a number of diagonal web member 3, the middle of the diagonal web member 3 both ends are connected through the first connecting piece 22 and the upper chord 1 and lower chord 2, the end of the diagonal web member 3 upper end through the first connecting piece 22 and the upper chord 1 connected, the end of the diagonal web member 3 lower end connecting the second connecting piece 26, the second connecting piece 26 and the third connecting piece 31 arranged in the lower chord 2 end connected.

[0052] In this invention, the upper chord 1, lower chord 2, diagonal web members 3, and transverse steel beam 12 are all made of structural steel, specifically H-beams, and include two flanges and a central web. The diagonal web members 3 are arranged continuously and symmetrically.

[0053] Preferably, such as Figures 2-4 As shown, the first connecting member 22 includes a first connecting member node plate 24, a first connecting member end plate 23, and a first connecting member stiffening plate 25. The first connecting member node plate 24 is triangular and vertically arranged, with the first connecting member stiffening plate 25 located in the middle of both the inner and outer sides of the first connecting member node plate 24. There are three first connecting member end plates 23, fixed to the periphery of the first connecting member node plate 24. One first connecting member end plate 23 is located at the top or bottom of the first connecting member node plate 24, and is attached to the lower flange plate of the upper chord 1 or the upper flange plate of the lower chord 2 and connected by high-strength bolts 9. The other two first connecting member end plates 23 are symmetrically arranged on both sides, respectively connected to the end plates 11 of the diagonal web members 3 on both sides and connected by high-strength bolts 9. In this invention, a stiffening rib 21 is provided between the two flange plates of the upper chord 1 and / or the lower chord 2, and the stiffening rib 21 corresponds to the position of the first connecting member stiffening plate 25.

[0054] In this embodiment, the first connector 22 connected to the upper chord 1 has a first connector end plate 23 at the top of the first connector node plate 24. The end plate is attached to the lower flange plate of the upper chord 1 and connected by high-strength bolts 9. The first connector 22 connecting the upper and lower chords 2 has a first connector end plate 23 at the bottom of the first connector node plate 24. The end plate is attached to the upper flange plate of the lower chord 2 and connected by high-strength bolts 9.

[0055] Preferably, the second connector 26 includes a second connector node plate 28, a second connector end plate 27, and a second connector stiffening plate 29; the second connector node plate 28 is trapezoidal and arranged vertically, and the second connector stiffening plate 29 is symmetrically arranged on both sides of the second connector node plate 28; there are five second connector end plates 27, which are fixed on the five outer edges of the second connector node plate 28 (specifically arranged on the top, bottom, oblique side and two vertical sides of the second node plate 28), wherein the second connector end plates 27 on the oblique side are arranged obliquely and are connected to the end plate 11 at the end of the oblique web member 3 by high-strength bolts 9, and the second connector end plates 27 at the bottom are horizontally arranged on the third connector 31, and the two are connected by high-strength bolts 9.

[0056] In the present application, the end of the transverse steel beam 12 is respectively provided with a transverse steel beam connecting corbel 13, and the transverse steel beam 12 is connected with the upper chord 1 or the lower chord 2 through the transverse steel beam connecting corbel 13. The transverse steel beam connecting corbel 13 comprises a transverse steel beam connecting corbel node plate and a transverse steel beam connecting corbel end plate, the transverse steel beam connecting corbel node plate is vertically arranged, and the transverse steel beam connecting corbel end plate is arranged on the top, bottom and side of the transverse steel beam connecting corbel node plate, wherein the transverse steel beam connecting corbel end plate on the side is connected with the end plate 11 of the transverse steel beam 12, and the transverse steel beam connecting corbel end plate on the top and the bottom and the transverse steel beam connecting corbel node plate are all connected with the upper chord 1 or the lower chord 2, specifically, the transverse steel beam connecting corbel end plate on the top is connected with the upper flange plate of the upper chord 1 or the lower chord 2 (weldable), the transverse steel beam connecting corbel end plate on the bottom is connected with the lower flange plate of the upper chord 1 or the lower chord 2 (weldable), and the transverse steel beam connecting corbel node plate is connected with the web plate of the upper chord 1 or the lower chord 2 (weldable).

[0057] As shown in Figure 1 , Figures 6-10 A prefabricated corridor end connecting structure, comprising a corridor, a corbel 6 and a pre-embedded part 14 as described above, the upper side of the end of the corridor is connected with a fourth connecting part 38, the fourth connecting part 38 is connected with the main building frame column 7 through a cable assembly; the lower side of the end of the corridor is provided with a third connecting part 31, the third connecting part 31 is fixed on the top of the corbel 6 through the pre-embedded part 14, and the corbel 6 is fixed on the side of the main building frame column 7; the lower side and the upper side of the end of the corridor are connected through a support web plate 4.

[0058] Preferably, the upper chord 1 of the corridor is connected with the fourth connecting part 38, and two fourth connecting parts 38 are connected with the transverse steel beam 12 at the end through the transverse steel beam connecting corbel 13; the lower part of the fourth connecting part 38 is connected with the upper end of the support web plate 4, the lower end of the support web plate 4 is provided with a support web plate end plate, and the support web plate end plate is connected with the second connecting part end plate 27 on the top of the second connecting part 26 through a bolt; the second connecting part end plate 27 on the bottom of the second connecting part 26 is arranged on the third connecting part 31 and connected through a bolt.

[0059] In the application, the third connecting piece 31 comprises a third connecting piece node plate 33 in the middle, a third connecting piece end plate 32 and a third connecting piece stiffener 4; the third connecting piece node plate 33 is arranged vertically and is butted with the web of the lower chord 2; the third connecting piece stiffener 34 is symmetrically arranged on both sides of the third connecting piece node plate 33; the third connecting piece end plate 32 is fixed on the top, bottom and inner side of the third connecting piece node plate 33, the third connecting piece end plate 32 on the top and bottom is respectively butted with the upper and lower flange plate of the lower chord 2; the third connecting piece end plate 32 on the bottom is bolted with the embedded part 14; the second connecting piece end plate 27 on the bottom of the second connecting piece 26 is arranged on the third connecting piece end plate 32 on the top and is connected through high-strength bolts 9. The inner side of the two third connecting pieces 31 on the same end are respectively provided with a transverse steel beam connecting corbel 13, and the transverse steel beam connecting corbels 13 of the two third connecting pieces 31 are connected through a transverse steel beam 12.

[0060] In the application, the end web of the lower chord 2 is provided with a support support stiffener 30 on both sides.

[0061] Preferably, the embedded part 14 comprises a straight anchor steel bar 19, an embedded steel plate 15 and a bolt sleeve 16, the straight anchor steel bar 19 and the bolt sleeve 16 are embedded in the corbel 6, the upper end of the straight anchor steel bar 19 is connected with the embedded steel plate 15; the bolt sleeve 16 is fixed on the lower part of the embedded steel plate 15, the embedded steel plate 15 is provided with a sleeve hole 17 corresponding to the position of the bolt sleeve 16; the third connecting piece end plate 32 on the bottom of the third connecting piece 31 is threadedly connected with the bolt sleeve 16 through high-strength bolts 9. In the application, the end of the straight anchor steel bar 19 is further provided with an anchor end plate 20; the lower part of the embedded steel plate 15 is provided with a shear key 18.

[0062] Preferably, the fourth connecting piece 38 comprises a fourth connecting piece node plate 40, a fourth connecting piece stiffener 41 and a fourth connecting piece end plate 39, the fourth connecting piece node plate 40 is rectangular and vertically arranged, the fourth connecting piece node plate 40 is provided with a transverse support steel plate 42 and a vertical fourth connecting piece stiffener 41; the fourth connecting piece end plate 39 is connected on the top, bottom and side of the fourth connecting piece node plate 40, wherein the fourth connecting piece end plate 39 on the bottom is bolted with the end plate on the top of the support web 4, the fourth connecting piece end plate 39 close to the side of the corridor is bolted with the end plate 11 of the upper chord 1, and the fourth connecting piece end plate 39 close to the transverse steel beam connecting corbel 13 is bolted with the transverse steel beam connecting corbel 13.

[0063] Preferably, the cable assembly comprises a cable fixing disc 45 fixed in the fourth connecting piece 38, and a cable 43, the cable fixing disc 45 being connected with the fourth connecting piece stiffener plate 41; the fourth connecting piece stiffener plate 41 and the side fourth connecting piece end plate 39 (the fourth connecting piece end plate 39 close to the main building frame column 7) are provided with corresponding cable holes 44, one end of the cable 43 is fixed on the outer wall of the main building frame column 7, and the cable 43 is connected with the cable fixing disc 45 after passing through the main building frame column 7 and the corresponding cable hole 44.

[0064] In the present application, the connecting pieces have the same structure, which provides feasibility for the batch production of the corridor steel components in the factory. The first connecting piece 22, the second connecting piece 26, the fourth connecting piece 38 and the third connecting piece are all steel connecting components, and all comprise a connecting piece end plate, a connecting piece node plate and a connecting piece stiffener plate. In the embodiment, the first connecting piece 22 accounts for a large quantity, has a single form, and the connecting piece welds of the parts are all in an open space, without closed space welds, and the welding difficulty is low, which all provide feasibility for the batch processing of the connecting pieces in the factory. In the processing factory, the metal plates are processed by machines according to the design size of the connecting pieces, then the plates are punched according to the arrangement of the designed bolts, and finally the metal plates are welded into a whole to complete the processing of the connecting piece standard parts.

[0065] In the processing factory, the plates of the first connecting piece 22 are cut according to the intersecting lines, and the first connecting piece end plate 23 is punched (bolt hole 10) according to the arrangement of the designed bolts, then the first connecting piece end plate 23, the first connecting piece node plate 24 and the first connecting piece stiffener plate 25 are welded into a whole to complete the processing of the first connecting piece 22. Referring to the processing method of the first connecting piece 22, the processing of the second connecting piece 26 is completed. The fourth connecting piece end plate 39 and the stiffener plate 41 are punched according to the size and arrangement of the cable 43; the steel plates are cut and processed according to the size and thickness of the upper and lower end plates and the node plate 40 of the fourth connecting piece 38, then are welded into an I-beam to complete the preliminary processing of the fourth connecting piece 38; then the fourth connecting piece end plate 39, the fourth connecting piece stiffener plate 41 and the support steel plate 42 are sequentially welded to the previously processed I-beam to complete the processing of the fourth connecting piece 38.

[0066] According to the design size, the embedded steel plate 15 is cut in the factory, and the corresponding bolt sleeve 16 is configured according to the size of the high-strength bolt 9. The embedded steel plate 15 is pre-drilled at the corresponding position according to the arrangement of the high-strength bolt 9 and the size of the bolt sleeve 16, and then the hole inside is threaded by a machine to form a sleeve hole 17, and the same form of threading is also performed on the outside of the bolt sleeve 16 to form a match. Then the inside of the bolt sleeve 16 and the outside of the high-strength bolt 9 are correspondingly threaded to form a match. According to the design, the shear key 18 is welded with the embedded steel plate 15 into a whole through full penetration welding. The shear key 18 adopts L-shaped steel, and the length of the L-shaped steel limb is ≤120mm, so as to avoid that the size of the L-shaped steel is too large and affects the reinforcement arrangement of the main building frame column 7. The straight anchor bar 19 is welded with the anchor bar end plate 20 through punch plug welding at one end, and is welded with the embedded steel plate 15 into a whole at the other end. Finally, the bolt sleeve 16 with completed threading is screwed onto the embedded steel plate 15 to complete the processing of the embedded steel plate 15 standard part.

[0067] In the factory, according to the size of the corridor steel member and the arrangement of the bolt, the steel plate is cut and punched, and then the end plate is welded with the steel member to form a whole to complete the processing of the steel member standard part. In this embodiment, according to the design length of the diagonal web member 3, the I-beam is cut to a fixed length in the factory, the end plate 11 at the end of the diagonal web member 3 is cut according to the size of the diagonal web member 3, and according to the arrangement of the designed bolt 9, the hole is punched on the end plate 11 by a machine. After the punching is completed, the end plate 11 is welded at both ends of the diagonal web member 3 to complete the processing of the diagonal web member 3 standard part. The same method is used to complete the processing of the transverse steel beam 12 standard part.

[0068] During construction, the corridor is divided into three installation sections, each of which includes two truss groups 59, which are arranged in parallel and are connected by a plurality of transverse steel beams 12 and transverse steel beam connecting corbels 13. The truss group 59 includes the top chord 1, the bottom chord 2 and the diagonal web member 3. According to the design length of each installation section, the top chord 1 is made by cutting the I-beam to a fixed length. The chord end plate 5 is cut according to the size of the chord member, and according to the arrangement of the designed bolt 9, the hole is punched on the chord end plate 5 by a machine. After the punching is completed, the end plate 5 is welded at the end of the construction section of the top chord 1 and the bottom chord 2. According to the design size and arrangement of the additional stiffening rib 21, the stiffening rib 21 is welded at the corresponding position of the I-beam. The various plate parts of the transverse steel beam connecting corbel 13 and the end plate 11 are consistent with the transverse steel beam 12. After the various plate parts are cut into shape according to the intersecting lines, they are welded into a whole to complete the processing of the transverse steel beam connecting corbel 13. Then the transverse steel beam connecting corbel 13 is welded to the corresponding position of the top chord 1. Finally, the end plate 11 is welded at both ends of the top chord 1 to complete the processing of the top chord 1. The same method is used to complete the processing of the bottom chord 2.

[0069] After each standard part is processed, it is transported to the construction site. The construction of at least three floors above the corridor of the two side buildings must be completed before the hoisting of the corridor can be carried out. Two points need to be noted during the construction of the two side buildings: first, after the steel reinforcement of the corbel 6 is bound, the pre-embedded part 14 that has been processed needs to be placed in the corresponding position before the concrete can be poured. During the pouring of the concrete, measures need to be taken to block the inner hole of the bolt sleeve 16 to prevent the concrete slurry from flowing into the inner hole of the bolt sleeve 16 during the pouring process, and the inner hole is filled solid; second, after the steel reinforcement of the main building frame column 7 is bound, the anti-falling cable 43 needs to be fixed to the designed position before the concrete is poured. The anti-falling cable 43 can be made of steel wire, and after the concrete reaches the designed age, the cable is fixed by the cable fixing disc 45.

[0070] A prefabricated corridor construction method, the method is:

[0071] Step one, prefabricate each component of the corridor as described above, and each connecting piece of the end connection structure of the corridor as described above, and transport them to the construction site;

[0072] Step two, divide the corridor into a corridor first installation section 60 and a corridor second installation section 62 located at the end, and a corridor third installation section 61 located in the middle, wherein the outer sides of the corridor first installation section 60 and the corridor second installation section 62 are respectively connected to the main structure of the building, and the corridor third installation section 61 is respectively connected to the corridor first installation section 60 and the corridor second installation section 62; the length of each installation section is divided according to the actual construction situation, such as Figure 11 and Figure 12 Each corridor installation section includes two truss groups 59, which are arranged in parallel front and back and connected by a plurality of transverse steel beams 12 and transverse steel beams 12, and the truss group 59 includes an upper chord 1, a lower chord 2 and a diagonal web 3, as shown in Figures 13-15 ;

[0073] Step three, on the ground, assemble the truss groups 59 of each corridor installation section in the order of the corridor first installation section 60, the corridor second installation section 62 and the corridor third installation section 61; in the corridor first installation section 60 and the corridor second installation section 62, the end of the lower chord 2 is connected to the second connecting piece 26, and the end of the upper chord 1 is connected to the third connecting piece 31; the upper and lower chord ends are connected to the support web 4.

[0074] Step four, set up a temporary support structure under the corridor.

[0075] Step five, setting a lifting device (which can be a steel structure lifting device) between the two buildings, lifting and connecting the two truss groups 59 of the first installation section 60 of the corridor by the lifting device; inserting a jack 58 at the end of the temporary support structure, adjusting the first installation section 60 of the corridor to the design height by the jack 58, and connecting and fixing the lower chord 2 and the embedded part 14 on the bracket by high-strength bolts 9 after the adjustment is completed.

[0076] The construction method of the truss group 59 of the first installation section 60 of the corridor is as follows: lifting the truss group 59 of the first installation section 60 of the corridor to a specified height, and the construction personnel initially position the truss group 59 on the temporary support structure, pass the anti-falling cable 43 that is buried in advance through the second connecting piece stiffener plate 29, fix the cable 43 on one side of the second connecting piece stiffener plate 29 by using the cable fixing disc 45, and lift the other truss group 59 of the first installation section 60 of the corridor by using the same method, connect the two truss groups 59 by the transverse steel beam 12 through high-strength bolts 9, and complete the overall installation of the first installation section 60 of the corridor.

[0077] Step six, the same method is used to complete the construction of the second installation section 62 of the corridor.

[0078] Step seven, lifting the third installation section 61 of the corridor, and connecting the first installation section 60 and the second installation section 62 of the corridor at both ends. Specifically, one truss group 59 of the third installation section 61 of the corridor is lifted to a specified position by using a lifting device, the position of the truss group 59 is adjusted by workers, the third installation section 61 of the corridor is connected to the first installation section 60 and the second installation section 62 of the corridor by corresponding truss groups 59 by high-strength bolts 9 (specifically, the upper chord 1 and the lower chord 2 are connected correspondingly), another truss group 59 of the third installation section 61 of the corridor is lifted to a specified position, and the third installation section 61 of the corridor is connected to the first installation section 60 and the second installation section 62 of the corridor by corresponding truss groups 59 by high-strength bolts 9, the two truss groups 59 of the third installation section 61 of the corridor are fastened and installed by the transverse steel beam 12, and finally the inclined web members 3 at the connection of each installation section are installed and fastened, and the construction of the corridor is completed.

[0079] Step eight, removing the temporary support structure.

[0080] In the present application, the truss group 59 includes the upper chord 1, the lower chord 2 and the inclined web member 3 arranged in parallel, Figure 13As shown. The installation process of the truss assembly 59 of the first installation section 60 of the connecting corridor is as follows: the end of the lower chord 2 is fastened to the second connecting piece 26 with high-strength bolts 9, the end of the upper chord 1 is fastened to the third connecting piece 31 with high-strength bolts 9, then the first connecting piece 22 is connected to the upper chord 1 and the lower chord 2 with high-strength bolts 9, and finally the support web member 4 and the diagonal web member 3 are connected to the upper chord 1 and the lower chord 2 into one unit with high-strength bolts 9, thus completing the assembly of the truss assembly 59 of the first installation section 60 of the connecting corridor. Following this construction procedure, the assembly of another truss group 59 of the first installation section 60 of the connecting corridor, the second installation section 62 of the connecting corridor, and the third installation section 61 of the connecting corridor is completed. The inner ends of the upper and lower chords of the first installation section 60 and the second installation section 62 of the connecting corridor (the end closest to the third installation section 61 of the connecting corridor) are provided with chord end plates 5. The upper and lower chords of the third installation section 61 of the connecting corridor are provided with chord end plates 5. The chord end plates 5 of the third installation section 61 of the connecting corridor are connected to the chord end plates 5 of the first installation section 60 and the second installation section 62 of the connecting corridor by high-strength bolts 9.

[0081] In this invention, when the connecting corridor is more than 12m above the ground, a construction support frame is used as a temporary support structure. The construction support frame is connected to temporary embedded parts at its ends. These temporary embedded parts are all embedded within the main building frame columns 7 at the main building floor level. The horizontal components (beams and floor slabs) at each floor level are connected, effectively transmitting the horizontal thrust of the embedded parts and reducing the load on the frame columns 7. Figure 16 As shown.

[0082] like Figure 17 As shown, the construction support frame includes a lower triangular support foundation 63 and a top construction platform; the top of the triangular support foundation 63 is provided with a platform steel beam 55, and according to the position of the truss assembly of the first installation section 60 or the second installation section 62 of the connecting corridor, two rows of steel pads 56 are arranged on the top component of the platform steel beam 55 or the triangular support foundation 63 to support the truss assembly 59; the jack 58 extends through the two steel pads 56 at the end; a protective steel plate 57 is laid on the platform steel beam 55 to form the construction platform. The triangular support foundation 63 includes two sets of triangular support frames arranged in parallel front and rear, connected by horizontal members. Each triangular support frame includes a horizontal top rod 54, a vertical side rod, an oblique rod, and a central connecting rod 53 welded together. A bottom connecting rod 52 is welded to the lower end of the vertical side rod. All members are square steel tubes. The horizontal top rod 54, the central connecting rod 53, and the bottom connecting rod 52 are temporary support connecting components, which are connected to temporary embedded parts.

[0083] like Figure 18 and 19As shown, the temporary embedded part includes temporary anchor bars 46, temporary shear keys 47, temporary end plates 50, temporary stiffening ribs 48 and temporary embedded connecting parts 49, the temporary anchor bars 46 are multiple, one end of the temporary anchor bars 46 and the temporary shear keys 47 is embedded in the frame column 7, the other end of the temporary anchor bars 46 and the temporary shear keys 47 is connected with the inner side of the temporary end plate 50, the outer side of the temporary end plate 50 is connected with one end of the temporary embedded connecting part 49, the other end of the temporary embedded connecting part 49 is connected with the temporary support connecting member (specifically with the horizontal top rod, the middle connecting rod or the bottom connecting rod) of the construction support frame 39; the temporary stiffening ribs 48 are arranged on the temporary end plates at the upper and lower parts of the temporary embedded connecting part 49.

[0084] The manufacturing and construction process of the construction support frame is as follows:

[0085] 1. The processing of the temporary embedded part is completed in the factory: the end plate of the temporary embedded part is cut according to the design size in the factory, the temporary shear key 47 and the temporary end plate 50 are welded into one whole body through full penetration welding, the temporary shear key 47 adopts L-shaped steel, the limb length of the L-shaped steel is ≤120mm, so as to avoid that the size of the L-shaped steel is too large and affects the reinforcement arrangement of the main building frame column 7; the temporary anchor bar 46 is welded into one whole body with the temporary end plate 50 through hole plug welding, a support frame steel member 40 is welded at the top of the temporary embedded part, the length of the pre-welded support frame steel member 40 is 300mm, the temporary stiffening rib 48 is cut according to the design size, and then is welded into one whole body with the temporary embedded part and the pre-welded support frame steel member 40, so as to complete the processing of the temporary embedded part.

[0086] 2. The temporary embedded part is embedded at the building main building floor elevation, the horizontal member (beam and floor slab) at the floor can effectively transmit the horizontal thrust of the embedded part and reduce the burden of the frame column 7. When the construction of the building main structure reaches the floor elevation with the temporary embedded part, the reinforcement arrangement of the frame column 7 is completed, then the temporary embedded part is embedded into the specified position, after the positioning of the temporary embedded part is completed, the concrete of the floor is poured. According to this method, the construction of the two side building main structures and the temporary embedded part is completed.

[0087] 3. The triangular support frame of the triangular support foundation 63 is prefabricated on the ground, then two triangular support frames are successively separated and hoisted to the specified position, the workers at the two side building main buildings finely adjust the position of the triangular support frame, weld the triangular support frame and the temporary embedded connecting part 49 reserved by the temporary embedded part into one whole body after the triangular support frame is adjusted to the specified position, then weld horizontal rod members between the two triangular support frames, so as to form the whole triangular support foundation 63.

[0088] 4. Construction personnel lay platform steel beam 55 on top of triangular support base 63, weld and fix platform steel beam 55 with each steel member on top of triangular support base 63; then evenly weld steel pads 56 on triangular support base 63 or platform steel beam 55 (convenient for temporary placement when hoisting and roughly positioning corridor steel members), set two steel pads 56 at the end, the spacing between the end steel pads 56 is recommended to be 400 mm, to facilitate the extension of jack 58; finally, lay protective steel plate 57 on top of platform steel beam 55 to complete the construction of the construction support frame; after the construction of the construction support frame on both sides is completed, it serves as a construction support point for the installation of the corridor.

[0089] In the present application, when the corridor is less than 12 m from the ground, a construction temporary jig frame 64 is used as a temporary support structure, as shown in Figure 20 Fig. 21. As shown in Fig. 21, the construction temporary jig frame 64 comprises a jig base, a cross 37 arranged on top of the jig base, steel pads 56 arranged at intervals on the cross 37, and a jack 58 extending between two steel pads 56. During construction, the truss group 59 of the corridor installation section is placed on the steel pads 56 and supported by the steel pads 56. The jig base comprises vertical steel members 65, horizontal steel members 35 and inclined steel members 36; the vertical steel members 65 are arranged in pairs, and adjacent two vertical steel members 65 are connected by horizontal steel members 35 arranged at intervals in the height direction; inclined steel members 36 are arranged between adjacent horizontal steel members 35; the steel members are connected by welding. The construction process of the construction temporary jig frame 64 is as follows: according to the size of the jig base, a base trench is dug, the lower end of the vertical steel member 65 is buried in the base trench, and after positioning, the concrete is poured; the temporary jig frame is designed as a lattice support frame, the vertical steel members 65, horizontal steel members 35 and inclined steel members 36 all adopt square steel through supports, and the members are connected by welding; after the concrete reaches the age, the jig frame steel members are welded into a whole to form the jig base; steel pads 56 are welded on top of the jig base, the spacing between the steel pads 56 is recommended to be 400 mm to facilitate the extension of the jack 58; according to the above method, the construction of four construction temporary jig frames 64 is completed to serve as temporary support structures.

[0090] The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made by using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A prefabricated connecting corridor, characterized in that, The system includes an upper chord (1), a lower chord (2), and diagonal web members (3). There are two upper chords (1), which are arranged in parallel front and back and are connected by several horizontal steel beams (12) arranged at intervals. There are two lower chords (2), which are located below the upper chords (1) and are connected by several horizontal steel beams (12) arranged at intervals. Several diagonal web members (3) are arranged between the upper chords (1) and the lower chords (2) on the same side. The two ends of the middle diagonal web members (3) are connected to the upper chords (1) and the lower chords (2) respectively through the first connector (22). The upper end of the diagonal web members (3) at the end is connected to the upper chords (1) through the first connector (22), and the lower end of the diagonal web members (3) at the end is connected to the second connector (26). The second connector (26) is connected to the third connector (31) at the end of the lower chords (2). The second connector (26) includes a second connector node plate (28), a second connector end plate (27), and a second connector stiffening plate (29). The second connector node plate (28) is trapezoidal and arranged vertically, and the second connector stiffening plate (29) is symmetrically arranged on both sides of the second connector node plate (28). There are four second connector end plates (27), which are fixed to the top, bottom and sides of the second connector node plate (28). The top second connector end plate (27) is arranged obliquely and connected to the end plate (11) at the end of the diagonal web member (3). The bottom second connector end plate (27) is horizontally set on the upper flange plate of the lower chord member (2).

2. A prefabricated connecting corridor end connection structure, characterized in that, Includes the connecting corridor, corbel (6) and embedded part (14) as described in claim 1, wherein the upper side of the end of the connecting corridor is connected to the fourth connector (38), and the fourth connector (38) is connected to the main building frame column (7) through a cable assembly; the third connector (31) on the lower side of the end of the connecting corridor is fixed to the top of the corbel (6) through the embedded part (14), and the corbel (6) is fixed to the side of the main building frame column (7); the lower side and the upper side of the end of the connecting corridor are connected through the support web member (4).

3. The prefabricated connecting corridor end connection structure as described in claim 2, characterized in that, The upper chord (1) of the connecting corridor is connected to the fourth connector (38) at the end. The two fourth connectors (38) are connected to the transverse steel beam (12) at the end by the transverse steel beam connecting bracket (13). The lower part of the fourth connector (38) is connected to the upper end of the support web member (4). The lower end of the support web member (4) is provided with a support web member end plate. The support web member end plate is connected to the second connector end plate (27) at the top of the second connector (26). The second connector end plate (27) at the bottom of the second connector (26) is provided on the third connector (31) and is connected by bolts. The inner sides of the two third connectors (31) located at the same end are provided with transverse steel beam connecting brackets (13). The transverse steel beam connecting brackets (13) of the two third connectors (31) are connected by transverse steel beams (12).

4. The prefabricated connecting corridor end connection structure as described in claim 2, characterized in that, The embedded part (14) includes a straight anchor bar (19), an embedded steel plate (15), and a bolt sleeve (16). The straight anchor bar (19) and the bolt sleeve (16) are embedded in the corbel (6). The upper end of the straight anchor bar (19) is connected to the embedded steel plate (15). The bolt sleeve (16) is fixed to the lower part of the embedded steel plate (15). The embedded steel plate (15) has a sleeve hole (17) corresponding to the position of the bolt sleeve (16). The end plate (32) of the third connector (31) at the bottom is threadedly connected to the bolt sleeve (16) by a high-strength bolt (9).

5. The prefabricated connecting corridor end connection structure as described in claim 4, characterized in that, The cable assembly includes a cable fixing plate (45) and a cable (43). The cable fixing plate (45) is fixed inside the fourth connector (38) and connected to the fourth connector. A corresponding cable hole (44) is provided on the fourth connector. One end of the cable (43) is fixed to the outer wall of the main building frame column (7). After the cable (43) passes through the main building frame column (7) and the corresponding cable hole (44), it is connected to the cable fixing plate (45).

6. A method for constructing a prefabricated connecting corridor, characterized in that, The method is as follows: Step 1: Divide the connecting corridor as described in claim 1 into sections, namely, the first installation section (60) and the second installation section (62) located at the ends, and the third installation section (61) located in the middle. The outer sides of the first installation section (60) and the second installation section (62) are respectively connected to the main structure of the building, and the third installation section (61) is respectively connected to the first installation section (60) and the second installation section (62). Each installation section includes two truss groups (59), which are arranged in parallel front and rear and connected by several transverse steel beams (12). Step 2: Prefabricate the components of the connecting corridor described in Step 1, as well as the connectors of the connecting corridor end connection structure described in any one of claims 3 to 5, and transport them to the construction site; Step 3: On the ground, assemble the truss group (59) of each connecting corridor installation section in the order of the first installation section (60), the second installation section (62), and the third installation section (61); in the first installation section (60) and the second installation section (62), the lower chord (2) is connected to the second connector (26), and the upper chord (1) is connected to the third connector (31). Step 4: Construct a temporary support structure under the connecting corridor; Step 5: Set up a hoisting device between the two buildings, use the hoisting device to hoist and connect the two truss groups (59) of the first installation section (60) of the connecting corridor; insert jacks (58) into the end of the temporary support structure, use jacks (58) to adjust the first installation section (60) of the connecting corridor to the design height, and after the adjustment is completed, use high-strength bolts (9) to connect and fix the lower chord (2) to the embedded part (14) on the corbel; Step 6: Using the same method, complete the construction of the second installation section (62) of the connecting corridor; Step 7: Hoist the third installation section (61) of the connecting corridor and connect the first installation section (60) and the second installation section (62) of the connecting corridor at both ends: Using the hoisting device, hoist one truss group (59) of the third installation section (61) of the connecting corridor to the designated position. The workers adjust the position of the truss group (59) and use high-strength bolts (9) to connect the third installation section (61) of the connecting corridor to the corresponding truss groups (59) of the first installation section (60) and the second installation section (62) of the connecting corridor into one unit; then hoist the other truss group (59) of the third installation section (61) of the connecting corridor to the designated position and use high-strength bolts (9) to connect the corresponding truss groups (59) of the first installation section (60) and the second installation section (62) of the connecting corridor into one unit; then use the transverse steel beam (12) to fasten the two truss groups (59) of the third installation section (61) of the connecting corridor and fasten the diagonal bracing (3) at the connection of each installation section; Step 8: Remove the temporary support structure.

7. The prefabricated connecting corridor construction method as described in claim 6, characterized in that, In step four, when the connecting corridor is more than 12m above the ground, a construction support frame is used as a temporary support structure. The construction support frame is connected to the temporary embedded parts at the end. The temporary embedded parts are all embedded in the main building frame column (7) at the floor level of the main building.

8. The prefabricated connecting corridor construction method as described in claim 7, characterized in that, The construction support frame includes a lower triangular support foundation (63) and a top construction platform; the top of the triangular support foundation (63) is provided with a platform steel beam (55), and according to the position of the truss assembly of the first installation section (60) or the second installation section (62) of the connecting corridor, two rows of steel pads (56) are arranged on the top components of the platform steel beam (55) or the triangular support foundation (63) to support the truss assembly (59); the jack (58) extends from between the two steel pads (56) at the end; a protective steel plate is laid on the platform steel beam (55) 57), forming a construction platform; the triangular support foundation (63) includes two sets of triangular support frames arranged in parallel front and rear, and the two sets of triangular support frames are connected by horizontal members; each triangular support frame includes a horizontal top rod (54), a vertical side rod, an oblique rod and a central connecting rod (53) welded together, and a bottom connecting rod (52) welded to the lower end of the vertical side rod, and each member is a square steel tube; and the horizontal top rod (54), the central connecting rod (53) and the bottom connecting rod (52) are temporary support connecting components, and the temporary support connecting components are connected to the temporary embedded parts.

9. The prefabricated connecting corridor construction method as described in claim 7, characterized in that, When the connecting corridor is less than 12m above the ground, a temporary construction frame is used as a temporary support structure. The temporary construction frame (64) includes a frame foundation, a cross (37) set on the top of the frame foundation, and steel pads (56) spaced apart on the cross (37). A jack (58) extends between two steel pads (56). The frame foundation includes vertical steel members (65), horizontal steel members (35), and diagonal steel members (36). There are four vertical steel members (65), arranged in pairs. Adjacent vertical steel members (65) are connected by horizontal steel members (35) spaced apart along the height direction. Diagonal steel members (36) are provided between adjacent horizontal steel members (35).

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