Large-span multilayer steel truss corridor and construction method

Abstract

The invention provides a large-span multi-layer steel truss corridor and a construction method, the large-span multi-layer steel truss corridor comprises two buildings, the top of each building is provided with a first channel and two second channels which are vertically arranged, the two second channels are located below the first channels, the top ends of the sides, close to each other, of the two buildings are fixedly connected with stopping plates, and the stopping plates are located above the first channels; fixing mechanisms are arranged on the two first channels, a multi-layer steel truss assembly connected with the fixing mechanisms is arranged between the two first channels, and the multi-layer steel truss assembly comprises a first steel beam, a second steel beam and a third steel beam which are sequentially arranged from top to bottom; the multi-layer steel truss is conveniently hoisted to a proper position at a time through hoisting equipment, repeated hoisting work is effectively avoided, convenience is provided for installation of the multi-layer steel truss, and then the construction efficiency of the multi-layer steel truss corridor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a long-span multi-layer steel truss corridor and a construction method. Background Art

[0002] With the continuous construction and development of cities, people have higher and higher requirements for the design of building functions and appearance. As a structure outside the building, the steel truss corridor can expand the space and improve the space utilization rate. It is increasingly used in buildings. When installing some large-span multi-story steel corridors, the overall lifting installation method is usually used to independently install each layer of steel truss corridor. That is, after the steel truss corridor of each layer is assembled as a whole on the ground, the assembled steel truss corridor is lifted to the connection position by a crane and installed with the building, and then the steel truss corridor of the next layer is lifted again.

[0003] During the construction of a multi-story steel truss corridor, after the upper steel truss corridor is installed, before hoisting the lower steel truss corridor, it is necessary to hoist a plurality of connecting beams in sequence to fix the upper steel corridor, and then fix the hoisted lower steel truss corridor with the previously hoisted plurality of connecting beams. During this process, repeated hoisting operations will cause cumbersome construction steps, thereby reducing the construction efficiency of the multi-story steel truss corridor. Summary of the invention

[0004] The object of the present invention is to provide a long-span multi-story steel truss corridor and a construction method that solves the above-mentioned technical problems.

[0005] In order to solve the above technical problems, the present invention provides a construction method of a long-span multi-layer steel truss corridor, comprising the following steps:

[0006] Step 1: Set a steel column between the ends of the two trusses, set a column at the top of the steel beam 1, and connect the top of the column to the bottom of the truss. Then, arrange the steel beams 3, 2 and 1 from bottom to top and place them between the two buildings. Make the through holes on the steel beams 3, 2 and 1 be sleeved on the outside of the stabilizer bar, and connect the lifting equipment at the top of the building to the steel column.

[0007] Step 2: Start the hoisting equipment to pull the steel column, truss, column and steel beam 1 upward synchronously, so that the through hole on the steel beam 1 slides on the stabilizer bar. During the upward movement, the distance between the steel beam 1 and the steel beam 2 increases due to the gravity of the steel beam 2.

[0008] Step 3: After the distance between the steel beam 1 and the steel beam 2 increases to a certain distance, the connection mechanism controls the distance between the steel beam 1 and the steel beam 2 and prevents the distance between the steel beam 1 and the steel beam 2 from further increasing, and the distance between the steel beam 1 and the steel beam 2 is equal to the height of the channel 2;

[0009] Step 4: In the process of expanding the distance between the first steel beam and the second steel beam, the position between the first steel beam and the second steel beam is vertically supported by the stabilizing unit to provide vertical positioning;

[0010] Step 5: Then the hoisting equipment continues to work, driving the steel beam 1 and the steel beam 2 to move up synchronously, and then under the gravity of the steel beam 3, the distance between the steel beam 2 and the steel beam 3 is further increased. When the distance between the steel beam 2 and the steel beam 3 is equal to the height of the channel 2, the stabilizing unit between the steel beam 2 and the steel beam 3 performs vertical support to keep the distance between the steel beam 2 and the steel beam 3 fixed;

[0011] Step 6: Then the hoisting equipment continues to pull the steel beam 1, steel beam 2 and steel beam 3 upward synchronously, and the hoisting equipment stops working when the truss moves up to contact the bottom surface of the stop plate;

[0012] Step 7: Then start the moving unit to control the movement of support plate 1 and support plate 2, so that support plate 1 and support plate 2 slide between steel beam 1 and steel beam 2 and between steel beam 2 and steel beam 3, and then further fix the distance between steel beam 1 and steel beam 2 and between steel beam 2 and steel beam 3.

[0013] The beneficial effects of the present invention are:

[0014] 1. The present invention facilitates the hoisting equipment to hoist the multi-layer steel truss to a suitable position at one time through the design of the building, channel 1, channel 2, steel beam 1, steel beam 2, steel beam 3, through-hole, truss, steel column, column and connection mechanism, avoiding repeated hoisting work, providing convenience for the installation of the multi-layer steel truss, and thus accelerating the construction efficiency of the multi-layer steel truss corridor;

[0015] 2. Through the design of the connection mechanism, during the hoisting process, due to the gravity of the steel beams 2 and 3, the spacing between the steel beam 2 and the steel beam 1 and the spacing between the steel beam 3 and the steel beam 2 can be adjusted. Therefore, under the action of gravity, the connection mechanism will move automatically, and there is no need to set up other power equipment to control the movement of the connection mechanism, which provides convenience for adjusting the spacing between the steel beam 2 and the steel beam 1 and the steel beam 3 respectively;

[0016] 3. Through the action of the connection mechanism, the pressure plate can be made to abut against the two slides horizontally and cooperate with the pressure rod to fix the fixing box and the mounting seat longitudinally, effectively keeping the distance between the first steel beam and the second steel beam and the distance between the second steel beam and the third steel beam fixed, thereby improving the connection stability of the first steel beam, the second steel beam and the third steel beam;

[0017] 4. Through the design of the fixing mechanism, support plate 2 and support plate 1 are slid between steel beam 1 and steel beam 2 and between steel beam 2 and steel beam 3, effectively supporting steel beam 1 and steel beam 2 and further fixing the distance between steel beam 2 and steel beam 1 and steel beam 3, further improving the connection stability of the multi-layer steel truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a long-span multi-story steel truss corridor provided by the present invention;

[0019] Figure 2 for Figure 1 lateral cross-sectional view;

[0020] Figure 3 for Figure 1 The main cross-section of

[0021] Figure 4 It is a structural schematic diagram of the fixing mechanism;

[0022] Figure 5 It is a structural schematic diagram of a multi-layer steel truss assembly;

[0023] Figure 6 It is a structural diagram of the connection mechanism;

[0024] Figure 7 for Figure 6 sectional view of .

[0025] Description of main symbols:

[0026] 1. Building; 2. Channel 1; 3. Stabilizing rod; 4. Channel 2; 5. Steel beam 1; 6. Steel beam 2; 7. Steel beam 3; 8. Through hole; 9. Truss; 10. Steel column; 11. Column; 12. Stop plate; 13. Groove 1; 14. Groove 2; 15. Slide; 16. Support plate 1; 17. Support plate 2; 18. Connecting rod; 19. Screw; 20. Worm gear; 21. Motor; 22. Worm; 23. Accommodating groove; 24. Fixed seat 1; 25. Fixed seat 2; 26. Sliding seat; 27. Sliding block; 28. Sliding mouth; 29. ​​Cross rod; 30. Connecting shaft; 31. Push block; 32. Notch; 33. Fixed cylinder; 34. Telescopic rod; 35. Spring 1; 36. Pressure plate; 37. Bevel; 38. Fixed box; 39. Mounting seat; 40. Tooth plate; 41. Rotating shaft; 42. Gear; 43. Pressure rod; 44. Locking mouth; 45. Movable groove; 46. Locking rod; 47. Spring 2. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0029] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0030] like Figure 1-Figure 7 The present invention provides a long-span multi-layer steel truss corridor and a construction method, comprising the following steps:

[0031] Step 1: The staff welds the steel column 10 between the two ends of the two trusses 9, welds the column 11 at the top of the steel beam 1 5, and welds the top of the column 11 to the bottom of the truss 9, and then arranges the steel beam 3 7, the steel beam 2 6 and the steel beam 1 5 from bottom to top and places them between the two buildings 1, so that the through holes 8 on the steel beam 3 7, the steel beam 2 6 and the steel beam 1 5 are sleeved on the outside of the stabilizer bar 3, and the hoisting equipment at the top of the building 1 is connected to the steel column 10;

[0032] Step 2: Start the hoisting equipment, which will pull the steel column 10, truss 9, column 11 and steel beam 1 5 upward synchronously, so that the through hole 8 on the steel beam 1 5 slides on the stabilizing rod 3. During the upward movement, due to the gravity of the steel beam 2 6, the distance between the steel beam 1 5 and the steel beam 2 6 increases, so that the slide seat 26 drives the slider 27 to slide in the slide opening 28, so as to realize the swing of the cross rod 29;

[0033] Step 3: The slider 27 drives the push block 31 to approach the recess 32, so that one end of the push block 31 contacts the bottom end of the pressure plate 36. In the process of the push blocks 31 on both sides of the pressure plate 36 approaching each other, the inclined surface of the push block 31 slides on the inclined edge 37 of the pressure plate 36, so that the pressure plate 36 moves downward, and the pressure plate 36 pulls the telescopic rod 34 to slide inside the fixed cylinder 33, so that the spring 1 35 is stretched. When the bottom end of the pressure plate 36 contacts the side wall of the slider 27, the pressure plate 36 is abutted against the two sliders 27, which can prevent the slide seat 26 from continuing to slide, prevent the cross rod 29 from continuing to swing, and prevent the distance between the steel beam 1 5 and the steel beam 2 6 from further increasing, effectively realizing the fixing of the distance between the steel beam 1 5 and the steel beam 2 6, and the distance between the steel beam 1 5 and the steel beam 2 6 is equal to the height of the channel 2 4;

[0034] Step 4: During the process of the distance between the steel beam 1 5 and the steel beam 2 6 being enlarged, the two adjacent tooth plates 40 approach each other, and the meshing of the tooth plates 40 and the gear 42 causes the gear 42 to rotate, and the gear 42 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the pressure rod 43 to swing, so that the pressure rod 43 rotates to the top of the mounting seat 39;

[0035] When the pressure rod 43 squeezes the locking rod 46, the end of the pressure rod 43 moves downward and compresses the second spring 47. When the pressure plate 36 abuts against the two sliders 27, the pressure rod 43 rotates to a vertical state, which makes the lock 44 in a vertical state, disconnects the squeezing of the locking rod 46, and inserts the lock 44 into the lock under the reverse force of the second spring 47, so as to lock the pressure rod 43. This can avoid the compression between the steel beam 1 5 and the steel beam 2 6 and the reduction of the spacing. Through the lateral abutment of the pressure plate 36 against the two slides 26 and the longitudinal fixation between the fixing box 38 and the mounting seat 39 by the pressure rod 43, the spacing between the steel beam 1 5 and the steel beam 2 6 is effectively kept fixed, thereby improving the stability of the spacing between the steel beam 1 5 and the steel beam 2 6 being equal to the height of the channel 2 4.

[0036] Step 5: As the hoisting equipment continues to work, it will drive the steel beam 1 5 and the steel beam 2 6 to move up synchronously, and then under the gravity of the steel beam 3 7, the distance between the steel beam 2 6 and the steel beam 3 7 will be further increased. When the distance between the steel beam 2 6 and the steel beam 3 7 is equal to the height of the channel 2 4, the pressure plate 36 will be horizontally abutted against the two slide seats 26, and the pressure rod 43 will be longitudinally fixed to the fixing box 38 and the mounting seat 39, effectively keeping the distance between the steel beam 2 6 and the steel beam 3 7 fixed;

[0037] Step 6: Then the lifting equipment will continue to pull the steel beam 1 5, the steel beam 2 6 and the steel beam 3 7 upward synchronously, and the lifting equipment will stop working when the truss 9 moves up to contact the bottom surface of the stop plate 12;

[0038] Step seven: Then start the motor 21, the motor 21 drives the worm 22 to rotate, the worm 22 drives the worm wheel 20 to rotate, the worm wheel 20 drives the screw 19 to rotate, and the threaded connection between the screw 19 and the support plate 2 17 makes the support plate 2 17 slide horizontally inside the groove 13, and the support plate 2 17 drives the connecting rod 18 to slide in the groove 13, and the support plate 16 slides inside the groove 2 14, so that the support plate 2 17 and the support plate 1 16 slide between the steel beam 1 5 and the steel beam 2 6 and between the steel beam 2 6 and the steel beam 3 7, effectively realizing the support of the steel beam 1 5 and the steel beam 2 6 and further fixing the distance between the steel beam 2 6 and the steel beam 1 5 and the steel beam 3 7, thereby improving the connection stability of the multi-layer steel truss.

[0039] Among them, a long-span multi-layer steel truss corridor is arranged between two buildings 1. The two buildings 1 are vertically arranged with a channel 1 2 and at least two channel 2s 4. The two channel 2s 4 are located below the channel 1 2. Stop plates 12 are fixedly connected to the top of one side of the two buildings 1 and located above the channel 1 2. Both channel 2s 4 are provided with fixing mechanisms. A multi-layer steel truss assembly connected to the fixing mechanism is provided between the two channels 1. It should be noted here that a hoisting device connected to the multi-layer steel truss assembly is installed on the top of the two buildings 1. The hoisting device can be a crane, so it is not drawn in the figure.

[0040] The multi-layer steel truss assembly includes a steel beam 1 5, a steel beam 2 6 and a steel beam 3 7 which are arranged in sequence from top to bottom. The top and bottom ends of the steel beam 2 6 are respectively connected to the steel beam 1 5 and the steel beam 3 7 through connection mechanisms which are arranged at equal distances. Two trusses 9 are symmetrically arranged above the steel beam 1 5. It should be noted here that after the lifting equipment lifts the multi-layer steel truss assembly, the top surface of the truss 9 will contact the bottom end of the stop plate 12, which will make the channel 1 2 located between the steel beam 1 5 and the truss 9, and the two channels 2 4 will be located between the steel beam 1 5 and the steel beam 2 6 and between the steel beam 2 6 and the steel beam 3 7 respectively. At this time, the lifting equipment is stopped. The lifting equipment can be a crane. A steel column 10 is fixedly connected between the two ends of the adjacent trusses 9. The truss 9 is connected to the top of the steel beam 1 5 through columns 11 which are arranged at equal distances. A through hole 8 is provided, and a stabilizing rod 3 matched with the through hole 8 is provided between the two buildings 1. The thickness of the second steel beam 6 is not less than the sum of the thicknesses of the first steel beam 5 and the third steel beam 7. The multi-layer steel truss assembly can be lifted and slid between the two buildings 1 by the action of the lifting equipment, and the connection mechanism will automatically operate under the action of gravity. When the channel 1 2 is located between the steel beam 1 5 and the truss 9, and the two channels 2 4 are respectively located between the steel beam 1 5 and the second steel beam 6 and between the second steel beam 6 and the third steel beam 7, the lifting equipment is stopped. In this process, no other power equipment needs to be set up to control the action of the connection mechanism, so the spacing between the first steel beam 5, the second steel beam 6 and the third steel beam 7 can be fixed, and the design of the fixing mechanism can be used to effectively further fix the first steel beam 5, the second steel beam 6 and the third steel beam 7, thereby further improving the connection stability of the multi-layer steel truss.

[0041] The two buildings 1 are provided with grooves 13 and 14 located on both sides of the two passages 24, and a slide groove 15 is provided between the bottom ends of the grooves 13 and 14. The slide groove 15 is a U-shaped structure. The fixing mechanism includes a support plate 16 sliding inside the groove 2 14 and a support plate 2 17 sliding inside the groove 13. The support plate 16 and the support plate 2 17 are both U-shaped structures. The bottom ends of the support plate 16 and the support plate 2 17 are connected by a connecting rod 18 sliding inside the slide groove 15. The connecting rod 18 is a U-shaped structure. A connecting rod 18 is provided between two adjacent support plates 2 17. There is a moving unit, which includes a screw 19 rotatably mounted on the inner wall of the groove 13, the screw 19 passes through the middle position of the support plate 17, the support plate 17 is threadedly connected to the screw 19, one end of the screw 19 is fixedly sleeved with a worm gear 20, a motor 21 is installed at the bottom end of the lower groove 13, the output shaft of the motor 21 is connected to a worm 22 extending to the inside of the upper groove 13, the worm 22 is meshed and connected with two worm gears 20, and the outer walls of the support plate 2 17 and the support plate 1 16 are in contact with the bottom surface of the steel beam 1 5, the top surface and bottom surface of the steel beam 2 6, and the top surface of the steel beam 3 7 respectively;

[0042] When channel 1 2 is located between steel beam 1 5 and truss 9, and two channels 2 4 are located between steel beam 1 5 and steel beam 2 6 and between steel beam 2 6 and steel beam 3 7 respectively, the support plate 1 16 and support plate 2 17 can be moved between steel beam 1 5 and steel beam 2 6 and between steel beam 2 6 and steel beam 3 7 through the moving unit, so as to facilitate the support plate 1 16 and support plate 2 17 to support and fix the steel beam 1 5, steel beam 2 6 and steel beam 3 7, thereby further improving the connection stability of the multi-layer steel truss.

[0043] The connection mechanism includes a receiving groove 23 opened at the bottom end of steel beam 1 5, the top and bottom end of steel beam 2 6 and the top end of steel beam 3 7. A fixing seat 1 24 is installed in the receiving groove 23 at the bottom end of steel beam 1 5 and steel beam 2 6. Fixed cylinders 33 are symmetrically installed at both ends of the fixing seat 1 24. The fixing cylinder 33 is a cavity structure with an opening at the bottom end. A fixing seat 25 is installed in the receiving groove 23 at the top end of steel beam 2 6 and steel beam 3 7. Mounting seats 39 are symmetrically installed on both sides of the fixing seat 25. The fixing cylinder 33 and the mounting seat 39 are connected by a stabilizing unit. A notch 32 is opened in the middle position of the side close to the fixing seat 1 24 and the fixing seat 2 25. A slide seat 26 is slidably installed on the side close to the fixing seat 1 24 and the fixing seat 2 25. The four slide seats 26 are rotatably connected by a cross rod 29. The middle position of the cross rod 29 is provided with a hinge. The connecting shaft 30, the fixed seat 1 24 and the fixed seat 2 25 are symmetrically provided with a sliding port 28 connected to the notch 32 on one side, one end of the sliding seat 26 is connected with a slider 27 sliding inside the sliding port 28, and the four sliders 27 are installed with a push block 31 sliding inside the sliding port 28 on one side close to the notch 32. The push block 31 is a right triangle structure, and a pressing unit connected to two adjacent push blocks 31 is provided inside the notch 32. The pressing unit includes three fixed cylinders 33 fixed to the top of the notch 32 at equal distances, and telescopic rods 34 are slidably installed inside the fixed cylinders 33. The fixed cylinders 33 and the telescopic rods 34 are connected by a spring 1 35, and the three telescopic rods 34 are connected by a pressing plate 36 sliding on the inner wall of the notch 32. Both ends of the pressing plate 36 are provided with a bevel 37, and the bevel 37 is in sliding contact with the inclined surface of the push block 31.

[0044] When the lifting equipment lifts the multi-layer steel truss upward, under the action of gravity, when the distance between steel beam 1 5 and steel beam 2 6 is equal to the height of channel 2 4, it will realize synchronous movement with steel beam 1 5. When the distance between steel beam 2 6 and steel beam 3 7 is equal to the height of channel 2 4, it will realize synchronous movement with steel beam 2 6. When the distance between steel beam 1 5 and steel beam 2 6 and between steel beam 2 6 and steel beam 3 7 are equal to the height of channel 2 4, the lifting equipment will continue to work, and the synchronous upward movement of steel beam 1 5, steel beam 2 6 and steel beam 3 7 will be realized, and the cross rod 29 will swing. During the process, the distance between the fixed seat 1 24 and the fixed seat 2 25 can be increased. During the increasing process, the pressure plate 36 can be lifted and lowered. When the distance increases to the height of the channel 2 4, the pressure plate 36 will press between the two push blocks 31, which can prevent the cross rod 29 from continuing to swing and causing the distance to further increase. Therefore, the distance between the steel beam 1 5 and the steel beam 2 6 and between the steel beam 2 6 and the steel beam 3 7 can be fixed. In this process, the action of the connection mechanism can be realized by the action of its own gravity, so there is no need to invest in other power mechanisms to realize its action.

[0045] The stabilizing unit includes a toothed plate 40 fixedly connected to the side away from the two slides 26 and located below the fixed seat 24. A rotating shaft 41 is rotatably installed inside the fixed box 38. A gear 42 and a pressure rod 43 are fixedly sleeved on the rotating shaft 41. The gear 42 is meshed and connected with the toothed plate 40. The bottom end of the pressure rod 43 is in sliding contact with the top end of the mounting seat 39. The mounting seat 39 is provided with a locking member connected with the pressure rod 43. The locking member includes a lock opening 44 opened at the bottom end of the pressure rod 43. The top end of the mounting seat 39 is provided with a movable groove 45. The inside of the movable groove 45 is slidably connected with a locking rod 46 extending to the inside of the lock opening 44. The bottom end of the movable groove 45 is connected to the bottom end of the locking rod 46 by a spring 2 47.

[0046] When the cross rod 29 swings, the tooth plate 40 will move. Therefore, the distance between the fixed seat 1 24 and the fixed seat 25 will increase, which will cause the pressure rod 43 to flip over. When the pressure plate 36 presses the push block 31, the pressure rod 43 is in a vertical state, realizing the connection between the fixed tube 33 and the mounting seat 39, and effectively fixing the distance between the fixed seat 1 24 and the fixed seat 25. The shortening of the distance between the fixed seat 1 24 and the fixed seat 25 can be avoided, and the distance between the steel beam 1 5 and the steel beam 2 6 and between the steel beam 2 6 and the steel beam 3 7 can be reduced, thereby improving the connection stability of the multi-layer steel truss.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. The construction method of a long-span multi-layer steel truss corridor is characterized by: The following steps are involved: Step 1: a steel column (10) is arranged between the ends of the two trusses (9), a column (11) is arranged at the top of the steel beam (5), and the top of the column (11) is connected to the bottom of the truss (9), and then the steel beam (3) (7), the steel beam (2) (6) and the steel beam (1) (5) are arranged in order from bottom to top and placed between the two buildings (1), so that the through holes (8) on the steel beam (3) (7), the steel beam (2) (6) and the steel beam (1) (5) are sleeved on the outside of the stabilizing rod (3), and the lifting equipment at the top of the building (1) is connected to the steel column (10); Step 2: Start the lifting equipment to pull the steel column (10), truss (9), column (11) and steel beam 1 (5) upward synchronously, so that the through hole (8) on the steel beam 1 (5) slides on the stabilizing rod (3). During the upward movement, the distance between the steel beam 1 (5) and the steel beam 2 (6) increases due to the gravity of the steel beam 2 (6); Step 3: After the distance between the first steel beam (5) and the second steel beam (6) increases to a certain distance, the connection mechanism controls the distance between the first steel beam (5) and the second steel beam (6) to prevent the distance between the first steel beam (5) and the second steel beam (6) from further increasing, and the distance between the first steel beam (5) and the second steel beam (6) is equal to the height of the second channel (4); Step 4: During the process of expanding the distance between the first steel beam (5) and the second steel beam (6), vertically support the position between the first steel beam (5) and the second steel beam (6) through the stabilizing unit to provide vertical positioning; Step 5: The hoisting equipment then continues to work, driving the steel beam 1 (5) and the steel beam 2 (6) to move upward synchronously, and then under the action of the gravity of the steel beam 3 (7), the distance between the steel beam 2 (6) and the steel beam 3 (7) is further increased. When the distance between the steel beam 2 (6) and the steel beam 3 (7) is equal to the height of the channel 2 (4), the stabilizing unit between the steel beam 2 (6) and the steel beam 3 (7) performs vertical support to keep the distance between the steel beam 2 (6) and the steel beam 3 (7) fixed; Step 6: Then the lifting equipment continues to pull the steel beam 1 (5), the steel beam 2 (6) and the steel beam 3 (7) upward synchronously, and the lifting equipment stops working when the truss (9) moves upward to contact the bottom surface of the stop plate (12); Step 7: Then, the moving unit is started to control the movement of support plate 1 (16) and support plate 2 (17), so that support plate 1 (16) and support plate 2 (17) slide between steel beam 1 (5) and steel beam 2 (6) and between steel beam 2 (6) and steel beam 3 (7), thereby further fixing the distance between steel beam 1 (5) and steel beam 2 (6) and between steel beam 2 (6) and steel beam 3 (7).

2. The construction method of the long-span multi-layer steel truss corridor according to claim 1 is characterized in that: A building (1) is provided with a channel one (2) and at least two channel twos (4) arranged vertically, the two channel twos (4) are located below the channel one (2), a stop plate (12) is fixedly connected at the top of one side of the two buildings (1) and located above the channel one (2), a fixing mechanism is provided on the two channel twos (4), and a multi-layer steel truss assembly connected to the fixing mechanism is provided between the two channel ones (2).

3. The construction method of the long-span multi-layer steel truss corridor according to claim 2 is characterized in that: The multi-layer steel truss assembly comprises a steel beam 1 (5), a steel beam 2 (6) and a steel beam 3 (7) which are arranged in sequence from top to bottom. The top and bottom ends of the steel beam 2 (6) are connected to the steel beam 1 (5) and the steel beam 3 (7) through connecting mechanisms arranged at equal distances. After the multi-layer steel truss assembly is hoisted and lifted by the hoisting equipment, the channel 1 (2) is located between the steel beam 1 (5) and the truss (9), and the two channels 2 (4) are respectively located between the steel beam 1 (5) and the steel beam 2 (6) and between the steel beam 2 (6) and the steel beam 3 (7).

4. The construction method of the long-span multi-story steel truss corridor according to claim 2 is characterized in that: The two buildings (1) are provided with a groove (13) and a groove (14) located on both sides of the passage (4); a slide groove (15) is provided between the bottom ends of the groove (13) and the groove (14); the fixing mechanism comprises a support plate (16) sliding inside the groove (14) and a support plate (17) sliding inside the groove (13); the bottom ends of the support plate (16) and the support plate (17) are connected by a connecting rod (18) sliding inside the slide groove (15); a moving unit is provided between two adjacent support plates (17); the moving unit comprises a support plate (16) rotatably installed in the groove (13); The screw rod (19) of the wall is passed through the middle position of the support plate 2 (17). The support plate 2 (17) is threadedly connected to the screw rod (19). One end of the screw rod (19) is fixedly sleeved with a worm gear (20). A motor (21) is installed at the bottom end of the lower groove 1 (13). The output shaft of the motor (21) is connected to a worm gear (22) extending into the interior of the upper groove 1 (13). The worm gear (22) is meshedly connected with the two worm gears (20). The outer walls of the support plate 2 (17) and the support plate 1 (16) are respectively in contact with the bottom surface of the steel beam 1 (5), the top surface and bottom surface of the steel beam 2 (6) and the top surface of the steel beam 3 (7).

5. The construction method of the long-span multi-story steel truss corridor according to claim 3 is characterized by: The connection mechanism comprises a receiving groove (23) opened at the bottom end of steel beam 1 (5), the top and bottom end of steel beam 2 (6) and the top end of steel beam 3 (7); a fixing seat 1 (24) is installed in the receiving groove (23) at the bottom end of steel beam 1 (5) and steel beam 2 (6); fixing cylinders (33) are symmetrically installed at both ends of the fixing seat 1 (24); the fixing cylinders (33) are hollow structures with bottom openings; a fixing seat 2 (25) is installed in the receiving groove (23) at the top end of steel beam 2 (6) and steel beam 3 (7); mounting seats (39) are symmetrically installed on both sides of the fixing seat 2 (25); the fixing cylinders (33) and the mounting seats (39) are connected by a stabilizing unit; the fixing seat 1 (24) and the fixing seat 2 (25) are both opened at the middle position of one side close to each other. A notch (32) is provided, and a slide seat (26) is slidably installed on the side where the fixed seat 1 (24) and the fixed seat 2 (25) are close to each other. The four slide seats (26) are rotatably connected through a cross rod (29). A connecting shaft (30) is provided at the middle position of the cross rod (29). A slide mouth (28) connected to the notch (32) is symmetrically opened on the side where the fixed seat 1 (24) and the fixed seat 2 (25) are close to each other. A slider (27) sliding inside the slide mouth (28) is connected to one end of the slide seat (26). A push block (31) sliding inside the slide mouth (28) is installed on the side where the four slide blocks (27) are close to the notch (32). A pressing unit connected to two adjacent push blocks (31) is provided inside the notch (32).

6. The construction method of the long-span multi-layer steel truss corridor according to claim 5 is characterized in that: The pressing unit comprises three fixed cylinders (33) fixedly connected to the top of the recess (32) at equal distances, telescopic rods (34) are slidably mounted inside the fixed cylinders (33), the fixed cylinders (33) and the telescopic rods (34) are connected via a spring (35), the three telescopic rods (34) are connected via a pressing plate (36) sliding on the inner wall of the recess (32), both ends of the pressing plate (36) are provided with bevels (37), and the bevels (37) are in sliding contact with the inclined surface of the push block (31).

7. The construction method of the long-span multi-story steel truss corridor according to claim 5 is characterized by: The stabilizing unit comprises a tooth plate (40) fixedly connected to the side away from the two slide seats (26) and located below the fixed seat (24); a rotating shaft (41) is rotatably installed inside the fixed box (38); a gear (42) and a pressure rod (43) are fixedly sleeved on the rotating shaft (41); the gear (42) is meshedly connected with the tooth plate (40); the bottom end of the pressure rod (43) is in sliding contact with the top end of the mounting seat (39); and a locking member connected with the pressure rod (43) is provided on the mounting seat (39).

8. The construction method of the long-span multi-layer steel truss corridor according to claim 7 is characterized in that: The locking member comprises a locking opening (44) formed at the bottom end of the pressing rod (43); a movable groove (45) is formed at the top end of the mounting seat (39); a locking rod (46) extending into the locking opening (44) is slidably connected inside the movable groove (45); and the bottom end of the movable groove (45) and the bottom end of the locking rod (46) are connected via a second spring (47).

9. A long-span multi-story steel truss corridor, characterized by: It is obtained by the construction method of the long-span multi-story steel truss corridor according to any one of claims 1-8.

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