Twisted long-span steel structure roof truss transfer beam structure and construction method

Abstract

The present application relates to a twisted long-span steel structure roof truss conversion beam structure, comprising embedded parts, the embedded parts are arranged at intervals along the extension direction of the conversion beam; the embedded parts comprise an embedded plate, a cross-shaped shear steel column fixedly connected with the embedded plate, and a plurality of vertical steel bars fixedly connected with the lower surface of the embedded plate, the lower ends of the vertical steel bars are flush with the lower surface of the conversion beam; the length of the vertical steel bars in the up-down direction is greater than or equal to the length of the cross-shaped shear steel column in the up-down direction; the embedded plate is used to be connected with a hinged support, longitudinal reinforcement is arranged along the extension direction of the conversion beam, and the longitudinal reinforcement is staggered with the vertical steel bars of the embedded parts; a plurality of perforations are formed in the cross-shaped shear steel column for the longitudinal reinforcement to pass through; continuous concrete is poured between the embedded parts and the longitudinal reinforcement; the upper surface of the embedded plate is flush with the upper surface of the conversion beam and higher than the roof height of the building; the embedded parts can withstand large loads and large shear and can also meet the support requirements.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and particularly relates to a tortuous large-span steel roof truss transfer beam structure and its construction method. Background Technology

[0002] The torsional large-span steel roof truss is a decorative structure installed above the roof. The truss comprises several frame structures spaced apart along the building's main extension direction. These frame structures are fixedly connected by connecting crossbars. One side of the torsional large-span steel roof truss is fixed to the ground, while the other side is connected to a roof transfer beam via supports. Part of the truss structure's weight is gradually transferred to the roof transfer beam through the supports, and then to the main building, making the roof transfer beam crucial to the support-point transfer method of construction. In existing technologies, only embedded plates are pre-embedded in the roof transfer beam for connection to the frame supports. While this method is simple, it lacks the capacity to bear gravity and lateral shear loads, thus affecting the roof transfer beam's stable support of the torsional large-span steel roof truss. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a torsional large-span steel roof truss transfer beam structure to solve the technical problem that the existing roof transfer beam structure has low strength and cannot provide stable support for the torsional large-span steel roof truss; in addition, this invention also provides a construction method for the torsional large-span steel roof truss transfer beam.

[0004] To achieve the above objectives, the technical solution adopted by the tortuous large-span steel roof truss transfer beam structure of the present invention is as follows: Twisted large-span steel roof truss transfer beam structures include: Embedded parts: Several are spaced apart along the extension direction of the transfer beam; The embedded parts include an embedded plate, a cross-shaped shear steel column fixedly connected to the embedded plate, and several vertical steel bars fixedly connected to the lower surface of the embedded plate. The lower ends of the vertical steel bars are flush with the lower surface of the transfer beam. The length of the vertical reinforcement bars in the vertical direction is greater than or equal to the length of the cross-shaped shear steel column in the vertical direction; The embedded plate is used to connect with the hinge support; Longitudinal reinforcement: Extends along the direction of the transfer beam, and is staggered with the vertical reinforcement of the embedded parts. The cross-shaped shear steel column has several through holes for the longitudinal reinforcement to pass through; Continuous concrete is poured between the embedded parts and the longitudinal reinforcement; The upper surface of the embedded plate is flush with the upper surface of the transfer beam and is higher than the building roof height.

[0005] Beneficial effects: In this invention, since the upper surface of the transfer beam is higher than the building's roof height, that is, in the vertical direction, the lower middle part of the transfer beam is below the building's roof, and the upper part of the transfer beam is above the building's roof. In other words, in the vertical direction, the upper surface of the transfer beam protrudes from the building's roof. In this invention, the extension direction of the transfer beam is defined as the left-right direction. First, embedded parts are arranged at intervals in the transfer beam. The embedded parts include embedded plates and cross-shaped shear-resistant steel columns fixedly connected to the embedded plates, and several vertical reinforcing bars fixedly connected to the lower surface of the embedded plates. Furthermore… The cross-shaped shear steel column has several through holes for the longitudinal reinforcement to pass through. In this way, the longitudinal reinforcement and the cross-shaped shear steel column intersect at the location of the embedded part. Moreover, the vertical reinforcement of the embedded part is staggered with the longitudinal reinforcement. After the concrete of the transfer beam is poured, the embedded part is stably connected with the longitudinal reinforcement of the transfer beam, so that the embedded part and the transfer beam form a good contact connection, which facilitates the transfer of the load borne by the embedded part to the transfer beam. In addition, the setting of the cross-shaped shear steel column enables the embedded part to have strong shear strength, so that even if the embedded part has to withstand large loads and large shear, it can meet the support requirements.

[0006] Furthermore, the cross-shaped shear-resistant steel column includes a first steel plate and a second steel plate in a cross shape fixed below the embedded plate. The intersection of the first steel plate and the second steel plate coincides with the center of the embedded plate. The first steel plate extends in the left-right direction, and the second steel plate extends in the front-back direction. A third steel plate extending in the front-back direction is fixed to the left and right ends of the first steel plate, respectively. A fourth steel plate extending in the left-right direction is fixed to the front and back ends of the second steel plate, respectively.

[0007] Beneficial effects: In the cross-shaped shear-resistant steel column, the first steel plate is parallel to the two fourth steel plates, and the second steel plate is parallel to the two third steel plates. Thus, under the combined action of the first and fourth steel plates, the embedded part can withstand a large shear force in the front-back direction, and under the combined action of the second and third steel plates, the embedded part can withstand a large shear force in the left-right direction.

[0008] Furthermore, the longitudinal ribs extend in the left-right direction, and the second and third steel plates have clearance holes corresponding to the extension direction of the longitudinal ribs.

[0009] Beneficial effects: The setting of the clearance hole allows the longitudinal reinforcement to pass through the cross-shaped shear steel column, thereby ensuring the integrity of the longitudinal reinforcement in the left and right directions, ensuring the strong structural stability of the transfer beam, and also enabling the embedded parts in the transfer beam to form a stable cross connection with the transfer beam, ensuring the stability of the embedded parts in the transfer beam.

[0010] Furthermore, a large-headed stud is fixed to the side of the third steel plate opposite to the first steel plate, and a large-headed stud is fixed to the side of the fourth steel plate opposite to the second steel plate.

[0011] Beneficial effects: The installation of large-headed studs allows for sufficient contact area between the studs and concrete after the concrete is poured in the transfer beam, thus ensuring that the embedded parts can fully contact the concrete and guaranteeing the stability of the embedded parts in the transfer beam.

[0012] A reinforcing cage is provided at the embedded part, and the cross-shaped shear steel column and vertical reinforcing bars of the embedded part are located in the reinforcing cage; the longitudinal bars pass through the reinforcing cage in the left and right directions.

[0013] Beneficial effects: The installation of the steel cage further increases the connection performance between the embedded parts and the transfer beam, and also increases the shear resistance of the embedded parts in the transfer beam.

[0014] The lower end of the vertical reinforcing bar is fixed with a support pad.

[0015] Beneficial effect: The setting of support pads ensures the stability of the embedded parts in the transfer beam.

[0016] The embedded plate has a through-hole for ventilation.

[0017] Beneficial effects: The vent holes ensure that air can be discharged from under the embedded plate when concrete is poured under the embedded plate of the embedded part, ensuring the compactness of the concrete under the embedded plate and ensuring that the embedded plate can fully contact the concrete.

[0018] The construction method for a tortuous, large-span steel roof truss transfer beam structure includes the following steps: S1: Design and customize welding embedded parts according to drawings; S2: According to the design drawings, place several steel cages at the design position of the transfer beam, then place the embedded parts in the steel cages and weld the upper end of the steel cages to the embedded parts; S3: Start from one end of the transfer beam and thread the longitudinal bars in sequence, so that the longitudinal bars pass through the steel cage and the embedded parts in sequence. The connection points of the longitudinal bars in the left and right directions are connected by sleeves. S4: Erect the formwork for the transfer beam and leave a pouring opening at the top of the transfer beam; S5: Pour the concrete for the transfer beam through the pouring port.

[0019] Beneficial effects: In this invention, since the upper surface of the transfer beam is higher than the building's roof height, that is, in the vertical direction, the lower middle part of the transfer beam is below the building's roof, and the upper part of the transfer beam is above the building's roof. In other words, in the vertical direction, the upper surface of the transfer beam protrudes from the building's roof. In this invention, the extension direction of the transfer beam is defined as the left-right direction. First, embedded parts are arranged at intervals in the transfer beam. The embedded parts include embedded plates and cross-shaped shear-resistant steel columns fixedly connected to the embedded plates, and several vertical reinforcing bars fixedly connected to the lower surface of the embedded plates. Furthermore… The cross-shaped shear steel column has several through holes for the longitudinal reinforcement to pass through. In this way, the longitudinal reinforcement and the cross-shaped shear steel column intersect at the location of the embedded part. Moreover, the vertical reinforcement of the embedded part is staggered with the longitudinal reinforcement. After the concrete of the transfer beam is poured, the embedded part is stably connected with the longitudinal reinforcement of the transfer beam, so that the embedded part and the transfer beam form a good contact connection, which facilitates the transfer of the load borne by the embedded part to the transfer beam. In addition, the setting of the cross-shaped shear steel column enables the embedded part to have strong shear strength, so that even if the embedded part has to withstand large loads and large shear, it can meet the support requirements.

[0020] Furthermore, auxiliary pouring ports are provided on the formwork on both the front and rear sides of the embedded plate of the embedded part. The auxiliary pouring ports are located in the middle of the embedded plate, which shortens the flow distance of the concrete under the embedded plate when pouring concrete.

[0021] Beneficial effects: Auxiliary pouring ports are provided on the formwork on both the front and rear sides of the embedded plate. The auxiliary pouring ports are located in the middle of the embedded plate. When pouring concrete, the flow distance of the concrete under the embedded plate is shortened, thereby avoiding the phenomenon of hollowing under the embedded plate caused by insufficient filling of concrete due to the distance between the embedded plate and the pouring port.

[0022] The auxiliary pouring opening is funnel-shaped. After the pouring is completed, the funnel-shaped concrete is chiseled out and repaired to make it smooth.

[0023] Beneficial effect: Setting the auxiliary pouring port in a funnel shape facilitates the gradual flow of concrete from the pouring port into the area below the embedded plate during pouring. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one of the trusses in the tortuous large-span steel roof truss transfer beam structure of the present invention; Figure 2 This is a side view of the torsion-type large-span steel roof truss transfer beam structure in this invention; Figure 3 yes Figure 2 Front view of the medium-torsional large-span steel roof truss transfer beam structure; Figure 4 yes Figure 2Top view of the embedded parts in the transfer beam; Figure 5 yes Figure 2 Left view of the embedded parts in the transfer beam; Figure 6 This is a schematic diagram of the tortuous large-span steel roof truss transfer beam structure during concrete pouring in this invention.

[0025] Attached reference numerals: 1-Main roof truss beam; 2-First inclined beam; 3-Second inclined beam; 4-Steel column; 5-Transfer beam; 6-Building roof; 7-Longitudinal reinforcement; 8-Embedded plate; 9-Cross-shaped shear steel column; 10-Large-head stud; 11-Vertical reinforcement; 12-Support pad; 13-Reinforcing cage; 14-Hinged support; 15-Allowing hole; 16-First steel plate; 17-Second steel plate; 18-Third steel plate; 19-Fourth steel plate; 20-Positioning hole; 21-Ventilation hole; 22-Auxiliary pouring port. Detailed Implementation

[0026] The tortuous large-span steel roof truss transfer beam structure of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: The twisted, large-span steel roof truss comprises several truss frames connected by transverse connecting columns. Each frame includes a main roof beam 1 suspended relative to the top of the building, and first inclined beams 2 and second inclined beams 3 fixedly connected to the main roof beam 1 on both sides. The lower end of the first inclined beam 2 is connected to the ground via steel columns 4, and the lower end of the second inclined beam 3 is connected to embedded parts in a transfer beam 5 via hinged supports 14. This transfers part of the roof truss load to the embedded parts via the hinged supports 14, and then to the transfer beam 5, allowing the main building structure to bear part of the roof truss load. Because the connection points on one side of the roof truss connected to the ground via steel columns 4 are not on the same straight line, while the connection points on the other side of the roof truss connected to the transfer beam 5 are all on the transfer beam 5, the roof truss as a whole is twisted.

[0027] In this invention, the extension direction of the transfer beam 5 is defined as the left-right direction. The upper surface of the transfer beam 5 is higher than the building roof 6. That is, in the vertical direction, the lower middle part of the transfer beam 5 is located below the building roof 6, and the upper part of the transfer beam 5 is located above the building roof 6. In other words, in the vertical direction, the upper surface of the transfer beam 5 protrudes from the building roof 6.

[0028] Multiple embedded parts are spaced apart along the extension direction of the transfer beam 5. The number of embedded parts is the same as the number of inclined beams on one side of the roof truss, and the embedded parts correspond one-to-one with the inclined beams.

[0029] The embedded components include a horizontally positioned embedded plate 8, a cross-shaped shear steel column 9 fixedly connected to the embedded plate 8, and several vertical reinforcing bars 11 fixedly connected to the lower surface of the embedded plate 8. The lower end face of the vertical reinforcing bars 11 is flush with the lower surface of the transfer beam 5. In this embodiment, the embedded plate 8 is square, 60mm thick, and 1800*2000mm in size. The embedded plate 8 is flush with the upper surface of the transfer beam 5 to connect with the hinge support 14, thus facilitating connection with the inclined beam on one side of the roof truss via the hinge support 14. The vertical reinforcing bars 11 are arranged around the cross-shaped shear steel column 9. The length of the vertical reinforcing bars 11 in the vertical direction is greater than the length of the cross-shaped shear steel column 9 in the vertical direction, that is, the lower end of the cross-shaped shear steel column 9 is cantilevered relative to the lower surface of the transfer beam 5. In this embodiment, the vertical reinforcing bars 11 are grade III reinforcing bars with a diameter of 32mm.

[0030] The cross-shaped shear-resistant steel column 9 includes a first steel plate 16 and a second steel plate 17 in a cross shape, positioned below the embedded plate 8. The intersection of the first steel plate 16 and the second steel plate 17 coincides with the center of the embedded plate 8. The upper ends of the first steel plate 16 and the second steel plate 17 are welded to the embedded plate 8. The first steel plate 16 extends in the left-right direction, and the second steel plate 17 extends in the front-back direction. A third steel plate 18 extending in the front-back direction is fixed to the left and right ends of the first steel plate 16, and a fourth steel plate 19 extending in the left-right direction is fixed to the front and back ends of the second steel plate 17, respectively.

[0031] In the cross-shaped shear-resistant steel column 9, the first steel plate 16 is parallel to the two fourth steel plates 19, and the second steel plate 17 is parallel to the two third steel plates 18. Thus, under the combined action of the first steel plate 16 and the fourth steel plate 19, the embedded part can withstand a large shear force in the front-back direction, and under the combined action of the second steel plate 17 and the third steel plate 18, the embedded part can withstand a large shear force in the left-right direction.

[0032] The transfer beam 5 is provided with longitudinal reinforcement 7 extending in the left and right directions. In this embodiment, the transfer beam 5 is 108m long, and the length of the longitudinal reinforcement 7 is equal to the length of the transfer beam 5. The longitudinal reinforcement 7 must be continuous in the transfer beam 5 and is not allowed to be tied with steel bars. The longitudinal reinforcement 7 cannot be bent. If the longitudinal reinforcement 7 needs to be connected, a sleeve is used to connect the longitudinal reinforcement 7.

[0033] When the longitudinal reinforcement 7 encounters the embedded part, in order to ensure the continuity of the longitudinal reinforcement 7, several through holes are opened on the cross-shaped shear steel column 9 for the longitudinal reinforcement 7 to pass through. Specifically, the second steel plate 17 and two third steel plates 18 arranged parallel to the second steel plate 17 are provided with clearance holes 15 corresponding to the longitudinal reinforcement 7. When the longitudinal reinforcement 7 passes through the cross-shaped shear steel column 9, the longitudinal reinforcement 7 and the vertical reinforcement 11 on the embedded part are arranged alternately.

[0034] In this embodiment, in order to increase the connection between the embedded part and the concrete, a number of large-headed studs 10 are fixed on the side of the third steel plate 18 away from the first steel plate 16, and a number of large-headed studs 10 are fixed on the side of the fourth steel plate 19 away from the second steel plate 17.

[0035] A reinforcing cage 13 is also provided at the embedded part location. The cross-shaped shear-resistant steel column 9 and the vertical reinforcing bars 11 of the embedded part are all located in the reinforcing cage 13. When the longitudinal bars 7 pass through the embedded part, they first pass through the reinforcing cage 13 and then through the clearance hole 15 of the embedded part. The setting of the reinforcing cage 13 further increases the connection performance between the embedded part and the transfer beam 5, and also increases the shear resistance performance of the embedded part in the transfer beam 5.

[0036] To increase the support stability of the embedded parts at the bottom of the transfer beam 5, in this embodiment, a support pad 12 is fixed to the lower end of each vertical reinforcing bar 11. The support pad 12 increases the support area at the bottom of the vertical reinforcing bar 11, ensuring stable support for the embedded parts while also increasing the support area of ​​the embedded parts. When the embedded parts are subjected to large vertical loads, the support pad 12 can prevent load concentration on the vertical reinforcing bars 11. In this embodiment, the support pad 12 is a small steel plate with dimensions of 100*100mm, which rests at the bottom of the beam.

[0037] To facilitate the welding and fixing of the vertical reinforcing bars 11 to the embedded plate 8, in this embodiment, a reinforcing bar positioning hole 20 is provided on the embedded plate 8. The upper end of the vertical reinforcing bar 11 is inserted into the reinforcing bar positioning hole 20, thereby facilitating the welding connection between the vertical reinforcing bar 11 and the embedded plate 8. Furthermore, when concrete is poured under the embedded plate 8, air below the embedded plate 8 can be discharged through the vent hole 21, ensuring the compactness of the concrete pouring below the embedded plate 8 and ensuring that the embedded plate 8 can fully contact the concrete; in this embodiment, a through vent hole 21 is provided on the embedded plate 8.

[0038] The construction method for a twisted, large-span steel roof truss transfer beam structure includes the following steps: S1: Design and customize welding embedded parts according to drawings.

[0039] First, vent holes 21 and vertical steel bar positioning holes 20 are opened on the embedded plate 8. Then, cross-shaped shear steel columns 9 are welded to the lower surface of the embedded plate 8. The vertical steel bars 11 with support pads 12 are welded into the steel bar positioning holes 20, and clearance holes 15 are opened on the second steel plate 17 and the third steel plate 18 of the embedded part, thus completing the welding of the embedded part.

[0040] S2: According to the design drawings, place several steel cages 13 at the design position of the transfer beam 5, and then place the embedded parts in the steel cages 13. At this time, the cross-shaped shear steel column 9 and the vertical steel bar 11 of the embedded parts are located in the steel cages 13. Weld the upper end of the steel cages 13 to the embedded parts to achieve the positioning of the steel cages 13 and the embedded parts in the transfer beam 5.

[0041] S3: The longitudinal bars 7 are sequentially threaded through one end of the transfer beam 5, so that the longitudinal bars 7 pass through the steel cage 13 and the embedded parts in sequence. The connection points of the longitudinal bars 7 in the left and right directions are connected by sleeves.

[0042] The length of the longitudinal reinforcement 7 is equal to the length of the transfer beam 5, and the reinforcement in the beam is prohibited from being tied. In order to connect the longitudinal reinforcement 7 when the length of the longitudinal reinforcement 7 is insufficient, a sleeve is used. The longitudinal reinforcement 7 needs to pass from one end of the transfer beam 5 to the other end. When the longitudinal reinforcement 7 passes through the avoidance hole 15 on the cross-shaped shear steel column 9 of the embedded part, in order to ensure the connection quality and construction progress of the longitudinal reinforcement 7, one person is assigned between every two embedded plates 8 to carry out the reinforcement passing construction.

[0043] S4: Set up the formwork for pouring the transfer beam 5, and leave a pouring opening at the top of the transfer beam 5.

[0044] When setting up the formwork for the transfer beam, a pouring port is left at the top of the transfer beam 5, and concrete is poured into the transfer beam 5 through the pouring port. However, because the size of the embedded plate 8 is 1800*2000mm, in order to ensure that the concrete can fill the space under the embedded plate 8 densely during pouring, the concrete within 400mm of the height of the transfer beam 5 above the building roof 6 is made of fine aggregate concrete of the same strength. In addition, auxiliary pouring ports 22 are opened on the formwork on the front and rear sides of the embedded plate 8. The auxiliary pouring ports 22 are located in the middle of the embedded plate 8. During concrete pouring, the flow distance of the concrete under the embedded plate 8 is shortened, thereby avoiding the phenomenon of hollow space under the embedded plate 8 due to insufficient filling of concrete caused by the distance between the embedded plate 8 and the pouring port.

[0045] A vent hole 21 with a diameter of 70mm is reserved on the embedded plate 8 to facilitate the effective discharge of gas during concrete pouring, avoid obstructing the flow of concrete, and ensure that the concrete is poured densely.

[0046] The auxiliary pouring port 22 is funnel-shaped. After the pouring is completed, the funnel-shaped concrete is chiseled and repaired to make it smooth. The auxiliary pouring port 22 is set in a funnel shape so that the concrete can flow from the pouring port into the area below the embedded plate 8 during the pouring process.

[0047] S5: Pour concrete for the transfer beam 5 from the pouring port and auxiliary pouring port 22.

[0048] In this embodiment, the longitudinal reinforcement 7 and the cross-shaped shear steel column 9 intersect at the location of the embedded part, and the vertical reinforcement 11 of the embedded part is staggered with the longitudinal reinforcement 7. After the concrete of the transfer beam 5 is poured, the embedded part and the longitudinal reinforcement 7 of the transfer beam 5 are stably connected, so that the embedded part and the transfer beam 5 form a good contact connection, which facilitates the transfer of the load borne on the embedded part to the transfer beam 5, and also increases the load-bearing capacity of the embedded part. Moreover, the setting of the cross-shaped shear steel column 9 enables the embedded part to have strong shear strength. The first steel plate 16 in the cross-shaped shear steel column 9 is parallel to the two fourth steel plates 19, and the second steel plate 17 is parallel to the two third steel plates 18. Thus, under the combined action of the first steel plate 16 and the fourth steel plate 19, the embedded part can withstand a large shear force in the front-back direction, and under the combined action of the second steel plate 17 and the third steel plate 18, the embedded part can withstand a large shear force in the left-right direction. This enables the embedded parts to withstand larger loads and have stronger shear resistance, meeting the support requirements for torsion-type large-span steel roof trusses.

[0049] In the above embodiments, the cross-shaped shear-resistant steel column includes a first steel plate and a second steel plate in a cross shape fixed below the embedded plate. The intersection of the first steel plate and the second steel plate coincides with the center of the embedded plate. The first steel plate extends in the left-right direction, and the second steel plate extends in the front-back direction. A third steel plate extending in the front-back direction is fixed to the left and right ends of the first steel plate, respectively. A fourth steel plate extending in the left-right direction is fixed to the front and back ends of the second steel plate, respectively. In other embodiments, the cross-shaped shear-resistant steel column may also include only the first and second steel plates in a cross shape, without the third and fourth steel plates.

[0050] In the above embodiments, a large-headed stud is fixed to the side of the third steel plate opposite to the first steel plate, and a large-headed stud is fixed to the side of the fourth steel plate opposite to the second steel plate; in other embodiments, the large-headed studs on the third steel plate and the second steel plate may not be provided.

[0051] In the above embodiments, a reinforcing cage is provided at the embedded part, and the cross-shaped shear steel column and vertical reinforcing bars of the embedded part are all located in the reinforcing cage; the longitudinal bars pass through the reinforcing cage in the left and right directions; in other embodiments, the reinforcing cage may not be provided.

[0052] In the above embodiments, the lower end of the vertical reinforcing bar is fixed with a support pad; in other embodiments, the support pad may not be provided.

Claims

1. A torsion-type large-span steel roof truss transfer beam structure, characterized by: include: Embedded parts: Several are spaced apart along the extension direction of the transfer beam; The embedded parts include an embedded plate, a cross-shaped shear steel column fixedly connected to the embedded plate, and several vertical steel bars fixedly connected to the lower surface of the embedded plate. The lower ends of the vertical steel bars are flush with the lower surface of the transfer beam. The length of the vertical reinforcement bars in the vertical direction is greater than or equal to the length of the cross-shaped shear steel column in the vertical direction; The embedded plate is used to connect with the hinge support; Longitudinal reinforcement: Extends along the direction of the transfer beam, and is staggered with the vertical reinforcement of the embedded parts. The cross-shaped shear steel column has several through holes for the longitudinal reinforcement to pass through; Continuous concrete is poured between the embedded parts and the longitudinal reinforcement; The upper surface of the embedded plate is flush with the upper surface of the transfer beam and is higher than the building roof height; The cross-shaped shear-resistant steel column includes a first steel plate and a second steel plate in a cross shape fixed below the embedded plate. The intersection of the first steel plate and the second steel plate coincides with the center of the embedded plate. The first steel plate extends in the left-right direction, and the second steel plate extends in the front-back direction. A third steel plate extending in the front-back direction is fixed at both ends of the first steel plate. A fourth steel plate extending in the left-right direction is fixed at both ends of the second steel plate. The longitudinal ribs extend in the left-right direction, and the second and third steel plates have clearance holes corresponding to the extension direction of the longitudinal ribs.

2. The tortuous large-span steel roof truss transfer beam structure according to claim 1, characterized in that, The third steel plate is fixed with a large-headed stud on the side opposite to the first steel plate, and the fourth steel plate is fixed with a large-headed stud on the side opposite to the second steel plate.

3. The tortuous large-span steel roof truss transfer beam structure according to claim 1 or 2, characterized in that, A reinforcing cage is provided at the embedded part, and the cross-shaped shear steel column and vertical reinforcing bars of the embedded part are located in the reinforcing cage; the longitudinal bars pass through the reinforcing cage in the left and right directions.

4. The tortuous large-span steel roof truss transfer beam structure according to claim 1 or 2, characterized in that, The lower end of the vertical reinforcing bar is fixed with a support pad.

5. The tortuous large-span steel roof truss transfer beam structure according to claim 1 or 2, characterized in that, The embedded plate has a through-hole for ventilation.

6. The construction method of the tortuous large-span steel roof truss transfer beam structure according to any one of claims 1-5, characterized in that, Includes the following steps: S1: Design and customize welding embedded parts according to drawings; S2: According to the design drawings, place several steel cages at the design position of the transfer beam, then place the embedded parts in the steel cages and weld the upper end of the steel cages to the embedded parts; S3: Start from one end of the transfer beam and thread the longitudinal bars in sequence, so that the longitudinal bars pass through the steel cage and the embedded parts in sequence. The connection points of the longitudinal bars in the left and right directions are connected by sleeves. S4: Erect the formwork for the transfer beam and leave a pouring opening at the top of the transfer beam; S5: Pour the concrete for the transfer beam through the pouring port.

7. The construction method for the tortuous large-span steel roof truss transfer beam structure according to claim 6, characterized in that, Auxiliary pouring ports are provided on the formwork on both the front and rear sides of the embedded plate of the embedded part. The auxiliary pouring ports are located in the middle of the embedded plate, which shortens the flow distance of the concrete under the embedded plate when pouring concrete.

8. The construction method for the tortuous large-span steel roof truss transfer beam structure according to claim 7, characterized in that, The auxiliary pouring opening is funnel-shaped. After the pouring is completed, the funnel-shaped concrete is chiseled out and repaired to make it smooth.

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