Construction method of large cantilever steel structure bracket floor steel beam

Abstract

The application provides a large overhanging curved surface connecting corbel steel beam construction method, first support grooves and second support grooves are arranged on the arc-shaped support plates, and the lateral positions of the transverse corbel and the inclined corbel can be limited by the corbel position adjusting bolts; a column bottom sand box is arranged at the bottom end of the formwork support column; the lateral position of the leg interval side formwork is controlled by the formwork support pier on the cantilever support plate and the sixth position adjusting body; horizontal inner supports and vertical inner supports perpendicular to each other are arranged in the net rack section; the spatial position of the net rack section is adjusted by adjusting the lengths of the first lifting rod, the second lifting rod and the third lifting rod; the position of the sliding cross beam is first limited by the transverse position adjusting bolt, and then the lateral positions of the assembled support column and the net rack guide groove are controlled by the eighth position adjusting body and the ninth position adjusting body. The application improves the installation and positioning precision of the transverse corbel and the inclined corbel, reduces the difficulty of column side concrete pouring, and improves the quality of the net rack section hoisting and installation.

Description

Technical Field

[0001] This invention relates to the field of curved surface connected corbel steel beam construction engineering, and in particular to a construction method for large cantilever curved surface connected corbel steel beams that can improve the installation and positioning accuracy of corbels, reduce the difficulty of hoisting space frame segments, and improve the quality of column-side concrete pouring. Background Technology

[0002] With the rapid development of steel structure technology, the shapes and nodes of steel structure space frames are becoming increasingly complex, especially placing high demands on the construction technology of irregular steel structure space frames. How to solve the problems of difficult control of space frame installation accuracy, difficult node processing, and reducing space frame construction deformation has always been the key and difficult point of steel structure space frame construction quality control.

[0003] Existing construction techniques often employ the high-altitude in-situ hoisting method to install steel space frames. This method requires the rational selection of hoisting points during the hoisting process to ensure the balance of forces on the space frame and thus avoid deformation during hoisting. At the same time, to ensure the strength and stability of the steel structure, the installation of each component should improve the positioning accuracy and enhance the connection strength of the nodes.

[0004] Therefore, in order to improve the installation and positioning accuracy of the corbel, reduce the hoisting difficulty of the space frame segments, and improve the concrete pouring quality of the corbel and column connection area, it is urgent to invent a construction method for a large cantilever curved surface connecting corbel steel beam that can reduce the installation and positioning difficulty of the corbel, improve the hoisting quality of the space frame segments, and improve the assembly and disassembly efficiency of the column side formwork and the leg side formwork. Summary of the Invention

[0005] The purpose of this invention is to provide a construction method for steel beams with large cantilever curved surface connecting brackets that can not only improve the installation and positioning accuracy of transverse and diagonal brackets, but also reduce the difficulty of concrete pouring on the column side and improve the quality of hoisting and installing space frame segments.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0007] 1) Positioning and installation of transverse and diagonal corbels: The assembled sliding groove is connected to the rigid steel column via column-side clamps, and a fixed support plate is welded to the end of the assembled sliding groove away from the diagonal corbel. The bottom end of the sliding support plate is connected to the assembled sliding groove via support plate tenons, and the side is connected to the fixed support plate via a first adjusting body. A counter-pressure support plate and a second adjusting body are installed on the side of the sliding support plate facing the diagonal corbel, and the counter-pressure support plate is connected to the arc-shaped support plate via a third adjusting body. The second adjusting body is connected to the arc-shaped support plate via a conversion support plate. A first support groove and a second support groove are provided on the lower surface of the arc-shaped support plate, and the first... The positions of the support groove and the second support groove correspond to the positions of the inclined corbel and the transverse corbel, respectively; 2) Concrete formwork pouring on the column side: Using external hoisting equipment, the rigid steel column, transverse corbel and inclined corbel connected as a whole are hoisted and placed on the constructed lower frame column; First, the column base sand box is moved to a set distance from the outside of the rigid steel column, and then a wedge-shaped stabilizer is set between the inclined bottom plate of the sand box and the lower floor slab. Then, the counterweight sand is filled into the column base sand box through the sand filling funnel at the top of the column base sand box, and the formwork support column is welded to the top outside of the column base sand box. A template limiting groove is set at the top of the column, and the template limiting groove is firmly connected to the lower frame column by the first column hoop. A column side formwork is set on the outside of the stiff steel column, and a second column hoop and a third column hoop are set on the outside of the column side formwork. A fourth adjusting body is set between the second column hoop and the template support column, and a fifth adjusting body is set between the third column hoop and the template support column. A cantilever support plate is set on the side of the third column hoop away from the template support column, and a template support pier is set on the upper surface of the cantilever support plate. A leg-to-leg side formwork is set between the transverse corbel and the diagonal corbel, and a joint is formed at the joint between the leg-to-leg side formwork and the diagonal corbel and the transverse corbel. Set up a closed interface layer. First, control the lateral position of the leg side formwork 34 through the sixth adjustment body, and then use the seventh adjustment body to make the leg side formwork tightly connected with the inclined corbel and the lateral corbel. Pour column side concrete in the column side formwork; 3) Column side formwork removal: After the column side concrete has formed strength, first release the constraints of the sixth and seventh adjustment bodies on the leg side formwork and then remove the leg side formwork. Then remove the first column hoop, the second column hoop and the third column hoop and then remove the column side formwork. Then blow the ballast sand body through the sand discharge fan on the column bottom sand box and discharge the ballast sand body out of the column bottom sand box through the sand discharge pipe.4) Pre-alignment hoisting of space frame units: First, second, and third pipe clamps are installed along the length of the space frame segment. A transverse inner brace is installed between the first and third pipe clamps, and a vertical inner brace is installed between the second pipe clamp and the transverse inner brace. A hoisting beam groove and a beam top support plate are installed on the rigid hoisting beam. Two hoisting adjustment plates are moved along the hoisting beam groove under the action of the tenth and eleventh adjustment bodies. First, second, and third lifting rods are spaced apart on the lower surface of the rigid hoisting beam. Ball joints are installed at the joints of the first hanger with the first pipe clamp, the second hanger with the second pipe clamp, and the third hanger with the third pipe clamp, so that the lifting adjustment plates on both sides are connected to the lifting ropes. After the space frame segment is lifted by the lifting ropes, the lengths of the first hanger, the second hanger, and the third hanger are adjusted so that the tilt angle of the space frame segment is the same as the installation angle. Then, the resultant force direction of the lifting adjustment plate and the lifting rope is adjusted by the tenth and eleventh adjustment bodies so that it is the same as the centroid of the space frame segment.

[0008] 5) Installation of suspended supports for space frame units: A fourth column hoop is installed on the outside of the concrete on the column side, and an adjustable support column is installed on the fourth column hoop. A horizontal beam support column is installed on the lower floor slab, and a column bottom support plate is installed at the junction of the horizontal beam support column and the lower floor slab. A beam end limiting hoop is installed at the top of the horizontal beam support column. A fixed horizontal beam is installed at the top of the horizontal beam support column and the adjustable support column simultaneously. The lateral position of the sliding horizontal beam is adjusted by the lateral adjustment bolt. A first corner brace is installed on the upper surface of the sliding horizontal beam, and a vertical eighth adjustment body and a horizontal ninth adjustment body are welded on the first corner brace. Assembled horizontal braces and space frame guide grooves are installed sequentially on the assembled support column facing the space frame segment direction. A second corner brace is welded to the bottom of the assembled support column and connected to the eighth adjustment body through the corner brace connecting groove. The vertical and lateral positions of the second corner brace and the space frame guide are adjusted simultaneously by the eighth and ninth adjustment bodies. Then, the space frame segment is welded to the diagonal corbel and the lateral corbel.

[0009] Compared with existing technologies, this technical solution has the following characteristics and beneficial effects:

[0010] (1) A first support groove and a second support groove are set on the arc-shaped support plate, and the lateral position of the transverse support and the oblique support can be limited by the support adjustment bolt. The transverse position of the sliding support plate is controlled by the first adjustment body, and the position of the arc-shaped support plate is controlled by the second adjustment body and the third adjustment body. This achieves accurate positioning of the transverse support and the oblique support, and reduces installation resistance.

[0011] (2) A column base sand box is set at the bottom of the template support column, and sand can be filled into the column base sand box through the sand filling funnel, so as to simultaneously improve the compressive and tensile bearing capacity of the column base sand box; at the same time, the sand discharge fan can be combined with the inclined bottom plate of the sand box to realize the rapid discharge of the ballast sand box.

[0012] (3) The lateral position of the side formwork between the legs is controlled by the template support on the cantilever support plate and the sixth adjustment body, and the airtightness of the connection between the side formwork between the legs and the interface sealing layer and the inclined corbel and the transverse corbel is controlled by the seventh adjustment body, thereby improving the quality of the side formwork between the legs.

[0013] (4) By setting mutually perpendicular transverse and vertical internal supports within the space frame segments, the rigidity of the space frame segments is improved and the hoisting deformation is reduced. By adjusting the lengths of the first, second, and third lifting rods, the spatial position of the space frame segments can be adjusted. At the same time, by adjusting the axis position of the hoisting ropes, the pre-adjustment hoisting of the space frame units can be achieved, reducing the installation difficulty.

[0014] (5) The present invention combines the crossbeam support column and the adjustable support column to limit the position of the fixed crossbeam. First, the position of the sliding crossbeam is limited by the transverse adjustment bolt. Then, the lateral position of the assembly support column and the space frame guide groove is controlled by the eighth and ninth adjustment bodies, thereby realizing the guiding control of the installation position of the space frame segment and reducing the difficulty of the connection and positioning of the space frame segment and the corbel. Attached Figure Description

[0015] Figure 1 This is a construction flowchart of the large cantilever curved surface connecting corbel steel beam of the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the positioning and installation structure of the transverse corbel and the oblique corbel;

[0017] Figure 3 yes Figure 2 Schematic diagram of the connection structure between the sliding support plate and the assembled sliding groove;

[0018] Figure 4 yes Figure 1 Schematic diagram of the concrete formwork and pouring structure on the side of the column;

[0019] Figure 5 yes Figure 1 Schematic diagram of the pre-adjustment hoisting structure of the space frame unit;

[0020] Figure 6 yes Figure 1 Schematic diagram of the suspended installation structure of the space frame unit;

[0021] Figure 7 yes Figure 6 Schematic diagram of the connection structure between the fixed crossbeam and the sliding crossbeam;

[0022] Figure 8 yes Figure 6 Schematic diagram of the connection structure between the first and second corner braces.

[0023] In the diagram: 1-Assembled sliding groove; 2-Column side clamp; 3-Strengthened steel column; 4-Diagonal corbel; 5-Transverse corbel; 6-Fixed support plate; 7-Sliding support plate; 8-Support plate tenon; 9-First adjusting body; 10-Counter-pressure support plate; 11-Second adjusting body; 12-Arched support plate; 13-Third adjusting body; 14-Transition support plate; 15-First support groove; 16-Second support groove; 17-Lower frame column; 18-Column base sand box; 19-Sand box inclined bottom plate; 20-Lower floor slab; 21-Wedge-shaped stabilizer; 22-Sand filling. 23-Functional weight sand; 24-Formwork support column; 25-Formwork limiting groove; 26-First column hoop; 27-Column side formwork; 28-Second column hoop; 29-Third column hoop; 30-Fourth adjustment body; 31-Fifth adjustment body; 32-Cantilever support plate; 33-Formwork support pier; 34-Legged side formwork; 35-Interface sealing layer; 36-Sixth adjustment body; 37-Seventh adjustment body; 38-Sand discharge fan; 39-Sand discharge pipe; 40-Column side concrete; 41-Space frame segment; 42-First pipe hoop; 43- 44-Second pipe clamp; 45-Horizontal internal brace; 46-Vertical internal brace; 47-Rigid lifting beam; 48-Lifting beam chute; 49-Beam top support plate; 50-Lifting adjustment plate; 51-Tenth adjustment body; 52-Eleventh adjustment body; 53-First lifting rod; 54-Second lifting rod; 55-Third lifting rod; 56-Rod end ball joint; 57-Lifting rope; 58-Fourth column clamp; 59-Adjustable support column; 60-Horizontal beam support column; 61-Column base support plate; 62-Beam end limiting clamp; 63-Fixed horizontal beam; 64 - Horizontal adjustment bolt; 65 - Sliding crossbeam; 66 - First corner brace; 67 - Eighth adjustment body; 68 - Ninth adjustment body; 69 - Assembled support column; 70 - Assembled cross brace; 71 - Space frame guide groove; 72 - Second corner brace; 73 - Corner brace connecting groove; 74 - First bolt hinge; 75 - Corbel adjustment bolt; 76 - Moving roller; 77 - Column formwork positioning bolt; 78 - Second bolt hinge; 79 - Support end ball hinge; 80 - Hoop side support plate; 81 - Upper floor slab; 82 - Crossbeam slide groove; 83 - Crossbeam connecting tenon; 84 - Slide groove connecting plate. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0026] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0027] The technical requirements for steel plate rolling, on-site welding, concrete pouring, and crawler crane hoisting are not elaborated in this embodiment. The focus is on describing the implementation method of the method involved in this invention.

[0028] Figure 1 This is a construction flowchart of the large cantilever curved surface connecting corbel steel beam of the present invention, for reference. Figure 1 As shown, the construction method for the large cantilever curved surface connecting corbel steel beam provided in this scheme includes the following construction steps:

[0029] 1) Positioning and installation of transverse and diagonal corbels: The assembly slide 1 is connected to the rigid steel column 3 via the column side clamp 2, and a fixed support plate 6 is welded to the end of the assembly slide 1 away from the diagonal corbel 4. The bottom end of the sliding support plate 7 is connected to the assembly slide 1 via the support plate tenon 8, and the side is connected to the fixed support plate 6 via the first adjusting body 9. A counter-pressure support plate 10 and a second adjusting body 11 are set on the side of the sliding support plate 7 facing the diagonal corbel 4, and the counter-pressure support plate 10 is connected to the arc-shaped support plate 12 via the third adjusting body 13. The second adjusting body 11 is connected to the arc-shaped support plate 12 via the conversion support plate 14. A first support groove 15 and a second support groove 16 are set on the lower surface of the arc-shaped support plate 12, and the first support groove 15 and the second support groove 16 are connected to the arc-shaped support plate 12 via the conversion support plate 14. The positions of the two support grooves 16 correspond to the positions of the inclined corbel 4 and the transverse corbel 5, respectively; 2) Concrete formwork pouring on the column side: The rigid steel column 3, transverse corbel 5 and inclined corbel 4 connected as a whole are hoisted by external hoisting equipment and placed on the constructed lower frame column 17; First, the column base sand box 18 is moved to a set distance from the outside of the rigid steel column 3, and then a wedge-shaped stabilizer 21 is set between the inclined bottom plate 19 of the sand box 18 and the lower floor slab 20. Then, the counterweight sand body 23 is filled into the column base sand box 18 through the sand filling funnel 22 at the top of the column base sand box 18, and the formwork support column 24 is welded on the top outside of the column base sand box 18. The formwork limiting groove 2 is set on the top of the lower frame column 17. 5. Securely connect the template limiting groove 25 to the lower frame column 17 via the first column hoop 26. Install a column side mold 27 on the outside of the rigid steel column 3, and install a second column hoop 28 and a third column hoop 29 on the outside of the column side mold 27. Install a fourth adjusting body 30 between the second column hoop 28 and the template support column 24, and a fifth adjusting body 31 between the third column hoop 29 and the template support column 24. Install a cantilever support plate 32 on the side of the third column hoop 29 away from the template support column 24, and install a template support pier 33 on the upper surface of the cantilever support plate 32. Install a leg-to-leg side mold 34 between the transverse corbel 5 and the inclined corbel 4, and install an interface seal at the joint between the leg-to-leg side mold 34 and the inclined corbel 4 and the transverse corbel 5. 35. First, control the lateral position of the leg side formwork 34 through the sixth adjusting body 36, and then use the seventh adjusting body 37 to make the leg side formwork 34 tightly connected with the inclined corbel 4 and the transverse corbel 5. Pour column side concrete 40 in the column side formwork 27; 3) Column side formwork removal: After the column side concrete 40 has formed strength, first release the constraints of the sixth adjusting body 36 and the seventh adjusting body 37 on the leg side formwork 34 and then remove the leg side formwork 34. Then remove the first column hoop 26, the second column hoop 28 and the third column hoop 29 and then remove the column side formwork 27. Then blow air on the ballast sand body 23 through the sand discharge fan 38 on the column bottom sand box 18 so that the ballast sand body 23 is discharged from the column bottom sand box 18 through the sand discharge pipe 39.4) Pre-alignment hoisting of space frame units: First pipe clamps 42, second pipe clamps 43, and third pipe clamps 44 are installed along the length of space frame segment 41. A transverse inner brace 45 is installed between the first pipe clamp 42 and the third pipe clamp 44, and a vertical inner brace 46 is installed between the second pipe clamp 43 and the transverse inner brace 45. A hoisting beam slide 48 and a beam top support plate 49 are installed on the rigid hoisting beam 47. Two hoisting adjustment plates 50 are moved along the hoisting beam slide 48 under the action of the tenth adjustment body 51 and the eleventh adjustment body 52. ​​First lifting rods 53 and second lifting rods 54 are spaced apart on the lower surface of the rigid hoisting beam 47. The third lifting rod 55, and the joints between the first lifting rod 53 and the first pipe clamp 42, the second lifting rod 54 and the second pipe clamp 43, and the third lifting rod 55 and the third pipe clamp 44 are respectively equipped with rod end ball joints 56, so that the lifting adjustment plates 50 on both sides are connected to the lifting ropes 57. After the space frame segment 41 is lifted by the lifting ropes 57, the lengths of the first lifting rod 53, the second lifting rod 54 and the third lifting rod 55 are adjusted so that the tilt angle of the space frame segment 41 is the same as the installation angle. Then, the resultant force direction of the lifting adjustment plate 50 and the lifting ropes 57 is adjusted by the tenth adjustment body 51 and the eleventh adjustment body 52. 5) Installation of suspended support for space frame unit: A fourth column hoop 58 is installed on the outside of the column side concrete 40, and an adjustable support column 59 is installed on the fourth column hoop 58. A crossbeam support column 60 is installed on the lower floor slab 20, and a column bottom support plate 61 is installed at the junction of the crossbeam support column 60 and the lower floor slab 20. A beam end limiting hoop 62 is installed at the top of the crossbeam support column 60. At the same time, a fixed crossbeam 63 is installed at the top of the crossbeam support column 60 and the adjustable support column 59. The lateral position of the sliding crossbeam 65 is adjusted by the lateral adjustment bolt 64. A support plate 64 is installed on the upper surface of the sliding crossbeam 65. Place the first corner brace 66, and weld the vertical eighth adjusting body 67 and the horizontal ninth adjusting body 68 onto the first corner brace 66; install the assembly cross brace 70 and the space frame guide groove 71 sequentially on the assembly support column 69 facing the space frame segment 41; weld the second corner brace 72 to the bottom end of the assembly support column 69 and connect the second corner brace 72 to the eighth adjusting body 67 through the corner brace connecting groove 73; first, simultaneously adjust the vertical and horizontal positions of the second corner brace 72 and the space frame guide groove 71 through the eighth adjusting body 67 and the ninth adjusting body 68; then weld the space frame segment 41 to the diagonal bracket 4 and the horizontal bracket 5.

[0030] Figure 2 yes Figure 1 Schematic diagram of the positioning and installation structure of the transverse corbel and the oblique corbel. Figure 3 yes Figure 2 Schematic diagram of the connection structure between the sliding support plate and the assembled sliding groove. Figure 4 yes Figure 1 Schematic diagram of the concrete formwork and pouring structure on the side of the column. Figure 5 yes Figure 1 Schematic diagram of the pre-adjustment hoisting structure for the space frame unit. Figure 6 yes Figure 1Schematic diagram of the suspended installation structure of the space frame unit. Figure 7 yes Figure 6 Schematic diagram of the connection structure between the fixed crossbeam and the sliding crossbeam. Figure 8 yes Figure 6 Schematic diagram of the connection structure between the first and second corner braces.

[0031] In step 1), as Figure 2 and Figure 3 As shown, the rigid steel column 3 is connected to an obliquely arranged oblique bracket 4 and a vertically arranged transverse bracket 5. The bottom of the assembly slide 1 is connected to a column side clamp 2. The column side clamp 2 is fitted onto the rigid steel column 3 and connected to the rigid steel column 3. The column side clamp 2 includes two clamp plates of the same shape, which are made of rolled steel plates. The inner surface shape is the same as that of the rigid steel column 3, so that the top surface of the column side clamp 2 is welded to the assembly slide 1.

[0032] The assembly slide 1 is made of rolled steel plate. A channel with a cross section of "T" is provided on the assembly slide 1 for the sliding of the support plate 7. The sliding support plate 7 passes through the channel of the assembly slide 1 and the support plate 7 at the bottom slides into the assembly slide 1.

[0033] A vertically fixed support plate 6 is welded to the top of the assembled slide 1 at the end away from the inclined bracket 4. A vertically arranged sliding support plate 7 is connected to the fixed support plate 6 via a length-adjustable first adjusting body 9. The first adjusting body 9 includes a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. Both ends are vertically welded to the fixed support plate 6 and the sliding support plate 7, respectively. A counter-pressure support plate 10 and a length-adjustable second adjusting body 11 are arranged from top to bottom on the side of the sliding support plate 7 facing the inclined bracket 4. The second adjusting body 11 includes a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. Both ends are welded to the sliding support plate 7 and the conversion support plate 14, respectively. The bottom of the counter-pressure support plate 10 is connected to a length-adjustable third adjusting body. The third adjusting body 13 is connected to the arc-shaped support plate 12. The third adjusting body 13 includes a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. One end is welded to the counter-pressure support plate 10, and the other end is connected to the arc-shaped support plate 12 through the first bolt hinge 74. The arc-shaped support plate 12 is provided with a conversion support plate 14 on the side near the second adjusting body 11, and the conversion support plate 14 is connected to the second adjusting body 11. The arc-shaped support plate 12 is made of rolled steel plate, and its curvature is the same as that of the connected space frame segment 41. The first support groove 15 and the second support groove 16 are both made of rolled steel plate, with a cross-section in the shape of a "U". The top end is welded to the arc-shaped support plate 12, and the bracket adjusting bolts 75 are respectively provided on the side walls of the first support groove 15 and the second support groove 16.

[0034] In step 2), as Figure 4As shown, the lower floor slab 20 overlaps with the constructed lower frame column 17, the column base sand box 18 is placed on the lower floor slab 20, and the rigid steel column 3 is suspended on the lower frame column 17. Step 2) The column base sand box 18 is made of rolled steel plate. A sand filling funnel 22 and a sand discharge fan 38 are installed on the top plate of the column base sand box 18. A sand discharge pipe 39 is installed on the side wall of the column base sand box 18. A sand box inclined bottom plate 19 is installed at the bottom of the column base sand box 18. A moving roller 76 is installed at the lower part of the sand box inclined bottom plate 19. During construction, the column base sand box 18 is first moved to a distance of 0.5 to 1 m from the outside of the rigid steel column 3. Then, a wedge-shaped stabilizer 21 is installed between the sand box inclined bottom plate 19 of the column base sand box 18 and the lower floor slab 20. The sand box inclined bottom plate 19 is made of rolled steel plate, with an inclined surface on the upper surface that is inclined toward the sand discharge pipe 39, and an inclined surface on the lower surface that is connected to the wedge-shaped stabilizer 21.

[0035] The template limiting groove 25 is provided with a screw hole for the column mold positioning bolt 77 to pass through, and the column mold positioning bolt 77 is used to control the position of the column side mold 27; the third column hoop 29 and the second column hoop 28 are sequentially fitted on the column side mold 27 on the outside of the rigid steel column 3 from top to bottom, wherein the second column hoop 28 is connected to the template support column 24 through the length adjustable fourth adjusting body 30, and the third column hoop 29 is connected to the template support column 24 through the length adjustable fifth adjusting body 31. The fourth adjusting body 30 and the fifth adjusting body 31 both include a screw and a nut, and the tightening directions of the screws on both sides of the nut are opposite. One end is welded perpendicularly to the template support column 24, and the other end is welded to the second column hoop 28 and the third column hoop 29 respectively; the leg side mold 3 4 is made of rolled steel plate with a "U" shaped cross section; and the third column hoop 29 is provided with a cantilever support plate 32 perpendicular to the stiff steel column 3 on the side away from the template support column 24. The template support pier 33 on the cantilever support plate 32 is connected to the leg side mold 34 through a sixth adjustable body 36 with adjustable length on the side mold 34 with adjustable length between the oblique support 4 and the transverse support 5. The sixth adjustable body 36 includes a screw and a nut, and the two ends of the sixth adjustable body 36 are welded to the leg side mold 34 and the template support pier 33 respectively; the seventh adjustable body 37 includes a screw and a nut, and the two ends of the seventh adjustable body 37 are connected to the leg side mold 34 through a second bolt hinge 78 respectively.

[0036] In step 3), the sand discharge fan 38 is placed on top of the column base sand box 18 with the air outlet facing the weighted sand body 23 inside the column base sand box 18. When the sand discharge fan 38 blows air onto the weighted sand body 23, the weighted sand body 23 can be discharged from the sand discharge pipe 39 on the side of the column base sand box 18.

[0037] In step 4), as Figure 5As shown, the space frame segment 41 has an arc-shaped structure. The first pipe clamp 42, the second pipe clamp 43, and the third pipe clamp 44 are fitted onto the space frame segment 41 along the segment length direction. The transverse inner brace 45 is located on the side of the space frame segment 41 away from the rigid hanging beam 47. Both the transverse inner brace 45 and the vertical inner brace 46 include screws and nuts, and the tightening methods of the screws on both sides of the nut are opposite. The transverse inner brace 45 and the vertical inner brace 46 are connected to the first pipe clamp 42, the second pipe clamp 43, and the third pipe clamp 44 respectively through the support end ball joint 79. The vertical inner brace 46 is vertically welded to the transverse inner brace 45. The first pipe clamp 42, the second pipe clamp 43, and the third pipe clamp 44 are all made of rolled steel plate, and their inner diameter is the same as the inner diameter of the space frame segment 41.

[0038] The rigid lifting beam 47 is made of rolled steel plate. A lifting beam groove 48 with an inverted "T" shaped cross-section is pre-set on the rigid lifting beam 47. A beam top support plate 49 is welded to each end of the rigid lifting beam 47. Two lifting adjustment plates 50 are slidably disposed within the lifting beam groove 48, and each side of the lifting beam groove 48 is connected to the beam top support plate 49 via a length-adjustable tenth adjustment body 51 and an eleventh adjustment body 52. ​​Both the tenth and eleventh adjustment bodies 51 and 52 include a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. Both ends are welded to the beam top support plate 49 and the lifting adjustment plate 50, respectively. The lower surface of the rigid lifting beam 47 is provided with a first lifting rod 53 movably connected to a first pipe clamp 42, a second lifting rod 54 movably connected to a second pipe clamp 43, and a third lifting rod 55 movably connected to a third pipe clamp 44. The first, second, and third lifting rods 53, 54, and 55 are vertically downwards.

[0039] In step 5), as Figures 6 to 8As shown in step 5), the fourth column hoop 58 is fitted onto the column side concrete 40, and a hoop side support plate 80 perpendicular to the column side concrete 40 is provided on the side of the fourth column hoop 58. An adjustable support column 59 parallel to the column side concrete 40 is welded to the hoop side support plate 80. A fixed crossbeam 63 is provided at the top of the adjustable support column 59. The fixed crossbeam 63 is made of rolled steel plate. A crossbeam groove 82 with a "T" shaped cross section is preset on the fixed crossbeam 63. A sliding crossbeam 65 is slidably connected to the fixed crossbeam 63, and the top of the fixed crossbeam 63 is... The elevation is the same as the bottom elevation of the upper floor slab 81. The bottom of the fixed crossbeam 63 is equipped with an adjustable transverse adjustment bolt 64. One end of the transverse adjustment bolt 64 is connected to the sliding crossbeam 65 to adjust the transverse position of the sliding crossbeam 65. The sliding crossbeam 65 is made of rolled steel plate, and its upper surface is provided with a crossbeam connecting tenon 83 that can move along the crossbeam slide groove 82. A first corner brace 66 is provided at the end of the upper surface of the sliding crossbeam 65 away from the fixed crossbeam 63. The first corner brace 66 is designed as an L-shaped structure, and a section of the first corner brace 66 parallel to the sliding crossbeam 65... A vertically oriented eighth adjusting body 67 is welded to the side. A horizontally oriented ninth adjusting body 68 is welded to the side of the first corner brace 66 perpendicular to the sliding beam 65. The bottom of the assembled support column 69 is connected to the eighth adjusting body 67 and the ninth adjusting body 68 via a second corner brace 72. The bottom of the second corner brace 72 is connected to the eighth adjusting body 67 via a corner brace connecting groove 73. The side wall of the second corner brace 72 is directly connected to the ninth adjusting body. The eighth adjusting body 67 is connected to the corner brace connecting groove 73 via a sliding groove connecting plate 84 provided at the top. The assembled support column 69 faces the net. The frame segment 41 is provided with assembly cross braces 70 and space frame guide grooves 71 in sequence. At least two assembly cross braces 70 are arranged perpendicular to the assembly support columns 69. The space frame guide grooves 71 are located at the top of the assembly cross braces 70 and face the space frame segment 41. The space frame guide grooves 71 are made of rolled steel plate. The inner diameter of the arc of the cross section is the same as the outer diameter of the steel pipe of the space frame segment 41, and the curvature of the arc of the longitudinal section is the same as the curvature of the space frame segment 41. The beam end limiting hoop 62 is made of rolled steel plate, sleeved on the end of the fixed cross beam 63, and welded to the cross beam support column 60.

[0040] See Figures 2-8 As shown, the assembly slide 1 is made of steel plate with a thickness of 10mm, and a channel with a cross section of "T" shape is provided on the assembly slide 1 for the sliding of the support plate tenon 8.

[0041] A pair of column side clamps 2 are installed on the outside of the rigid steel column 3, and the top surface of the column side clamps 2 is welded to the assembly slide 1. The column side clamps 2 include two clamp plates of the same shape, which are rolled from steel plates with a thickness of 10mm, and the inner surface shape is the same as that of the rigid steel column 3.

[0042] The rigid steel column 3 is made of H-beams with a specification of 400×400×13×21; the diagonal bracket 4 and the transverse bracket 5 are both made of H-beams with a specification of 300×300×10×15, so that the transverse bracket 5 is welded perpendicularly to the rigid steel column 3, and the diagonal bracket 4 is welded to the rigid steel column 3 at a 60° angle.

[0043] A fixed support plate 6 is vertically welded to the top of the assembly slide 1, and a sliding support plate 7 is set on the assembly slide 1. The sliding support plate 7 is connected to the assembly slide 1 by a support plate tenon 8 vertically welded to the bottom. The fixed support plate 6, the sliding support plate 7 and the support plate tenon 8 are all made of steel plate with a thickness of 10mm.

[0044] A pair of first adjusting bodies 9 are provided between the fixed support plate 6 and the sliding support plate 7, and the two ends of the first adjusting bodies 9 are respectively welded to the fixed support plate 6 and the sliding support plate 7 perpendicularly. The first adjusting body 9 includes a screw and a nut with a diameter of 30mm, and the tightening directions of the screws on both sides of the nut are opposite.

[0045] A counter-pressure support plate 10 and a second adjusting body 11 are vertically welded to the sliding support plate 7 on the side of the inclined bracket 4. The counter-pressure support plate 10 is made of steel plate with a thickness of 10mm. The second adjusting body 11 includes a screw and a nut with a diameter of 30mm, and the tightening directions of the screws on both sides of the nut are opposite.

[0046] The arc-shaped support plate 12 is made of steel plate with a thickness of 10mm and has a longitudinal section with an arc shape and a curvature that is the same as that of the connected space frame segment 41. The arc-shaped support plate 12 and the second adjustment body 11 are connected by a conversion support plate 14, which is made of steel plate with a thickness of 10mm and the two ends of the conversion support plate 14 are firmly welded to the arc-shaped support plate 12 and the second adjustment body 11 respectively.

[0047] A third adjusting body 13 is provided between the counter-pressure support plate 10 and the arc-shaped support plate 12, and one end of the third adjusting body 13 is welded to the counter-pressure support plate 10, and the other end is connected to the arc-shaped support plate 12 through the first bolt hinge 74. The third adjusting body 13 includes a screw and a nut with a diameter of 30mm, and the tightening directions of the screws on both sides of the nut are opposite. The first bolt hinge 74 is a universal ball hinge with a diameter of 30mm.

[0048] A first support groove 15 and a second support groove 16 are welded to the bottom of the arc-shaped support plate 12. Both the first support groove 15 and the second support groove 16 are made of steel plate with a thickness of 10mm and have a cross-section of "U". Bracket adjustment bolts 75 are respectively installed on the side walls of the first support groove 15 and the second support groove 16. The bracket adjustment bolts 75 are hexagonal bolts of type M30.

[0049] The lower frame column 17 is a circular reinforced concrete column with a diameter of 600mm; the lower floor slab 20 is a 110mm thick cast-in-place reinforced concrete slab.

[0050] The column base sand box 18 is made of 10mm thick steel plate and has a volume of 1m³. 3 A sand-filling funnel 22 and a sand-discharging fan 38 are installed on the top plate of the column base sand box 18. A sand-discharging pipe 39 is installed on the side wall of the column base sand box 18. A sand box inclined bottom plate 19 is installed at the bottom of the column base sand box 18. A movable roller 76 is installed at the lower part of the sand box inclined bottom plate 19. The sand-discharging fan 38 is a centrifugal exhaust fan. The sand-discharging pipe 39 is made of steel pipe with a diameter of 80mm. The movable roller 76 is a universal roller with a diameter of 5cm. The sand box inclined bottom plate 19 is made of steel plate with a thickness of 10mm. The upper surface is provided with an inclined surface that slopes towards the sand-discharging pipe 39. The lower surface is provided with an inclined surface that connects to the wedge-shaped stabilizer 21.

[0051] A wedge-shaped stabilizer 21 is set between the sand box inclined bottom plate 19 and the lower floor slab 20. The wedge-shaped stabilizer 21 is made of steel plate with a thickness of 10mm and a maximum height of 6cm. It is arranged in pairs at both ends of the bottom of the sand discharge fan 38.

[0052] The ballast sand body 23 is filled into the column base sand box 18 through the sand filling funnel 22. The ballast sand body 23 is made of river sand.

[0053] A template support column 24 is vertically welded to the top of the sand-filling funnel 22. The template support column 24 is made of steel plate with a thickness of 10mm.

[0054] A template limiting groove 25 is provided at the top of the lower frame column 17, and the template limiting groove 25 is firmly connected to the lower frame column 17 by the first column hoop 26. The template limiting groove 25 and the first column hoop 26 are both made of steel plate with a thickness of 10mm. The template limiting groove 25 is provided with screw holes for the column mold positioning bolt 77 to pass through. The first column hoop 26 includes two hoop plates with the same shape and the same cross-sectional shape as the lower frame column 17.

[0055] The column side mold 27 is made of steel plate with a thickness of 3mm. A second column hoop 28 and a third column hoop 29 are fitted on the outside of the column side mold 27. The second column hoop 28 and the third column hoop 29 are both made of steel plate with a thickness of 10mm and include two hoop plates of the same shape. A column positioning bolt is set at the bottom of the column side mold 27. The column positioning bolt is a hexagonal bolt of type M30.

[0056] Both the fourth adjusting body 30 and the fifth adjusting body 31 include a screw and a nut with a diameter of 30mm, and the tightening directions of the screws on both sides of the nut are opposite. One end of each screw is vertically welded to the template support column 24, and the other end is welded to the second column hoop 28 and the third column hoop 29 respectively.

[0057] A cantilever support plate 32 is vertically welded to the side of the third column hoop 29 away from the template support column 24, and a template support pier 33 is vertically welded to the upper surface of the cantilever support plate 32. Both the cantilever support plate 32 and the template support pier 33 are made of steel plate with a thickness of 10mm.

[0058] A leg-to-leg mold 34 is set between the transverse corbel 5 and the oblique corbel 4, and an interface sealing layer 35 is set at the joint interface between the leg-to-leg mold 34, the oblique corbel 4, and the transverse corbel 5. The leg-to-leg mold 34 is made of steel plate with a thickness of 3mm and has a cross-section of "U". The interface sealing layer 35 is made of rubber sheet with a thickness of 2mm.

[0059] Both the sixth adjusting body 36 and the seventh adjusting body 37 include a screw and a nut with a diameter of 30mm. The two ends of the sixth adjusting body 36 are welded to the leg side mold 34 and the template support 33, respectively. The two ends of the seventh adjusting body 37 are connected to the leg side mold 34 through the second bolt hinge 78. The second bolt hinge 78 is a ball hinge with a diameter of 30mm.

[0060] C30 grade concrete is pressure-poured between the column side formwork 27 and the leg side formwork 34 and the rigid steel column 3 to form column side concrete 40. After the column side concrete 40 has reached its strength, the column side formwork 27 and the leg side formwork 34 are removed.

[0061] The space frame segment 41 is made of steel pipe with a diameter of 100mm, and the longitudinal section is arc-shaped with a central angle of 60°.

[0062] The first pipe clamp 42, the second pipe clamp 43, and the third pipe clamp 44 are all rolled from steel plates with a thickness of 10mm, and include two clamp plates of the same shape, with an inner diameter that is the same as the outer diameter of the space frame segment 41.

[0063] A transverse inner brace 45 is provided between the first pipe clamp 42 and the third pipe clamp 44, and a vertical inner brace 46 is provided between the second pipe clamp 43 and the transverse inner brace 45. The vertical inner brace 46 is vertically welded to the transverse inner brace 45. Both the transverse inner brace 45 and the vertical inner brace 46 include a screw and a nut with a diameter of 30mm, and the tightening methods of the screws on both sides of the nut are opposite.

[0064] At the junctions of the transverse inner brace 45 and the vertical inner brace 46 with the space frame segment 41, support end ball joints 79 are respectively provided. The support end ball joints 79 are universal ball joints with a diameter of 30mm.

[0065] The rigid lifting beam 47 is made of steel plate with a thickness of 10mm. A lifting beam groove 48 with an inverted "T" shaped cross section is pre-set on the rigid lifting beam 47. A beam top support plate 49 is vertically welded to both ends of the rigid lifting beam 47. The beam top support plate 49 is made of steel plate with a thickness of 10mm.

[0066] The hoisting adjustment plate 50 is made of 10mm thick steel plate, with a "T" shaped cross section, and allows the hoisting adjustment plate 50 to slide along the hoisting beam groove 48 of the rigid hoisting beam 47.

[0067] The tenth adjusting body 51 and the eleventh adjusting body 52 are welded between the hoisting adjusting plate 50 at both ends and the beam top support plate 49, respectively. Both the tenth adjusting body 51 and the eleventh adjusting body 52 include a screw and a nut with a diameter of 20mm, and the tightening directions of the screws on both sides of the nut are opposite.

[0068] The first hanger 53, the second hanger 54, and the third hanger 55 each include a 30mm diameter screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. The upper ends of the first hanger 53, the second hanger 54, and the third hanger 55 are welded to the rigid hanger beam 47, and the lower ends are connected to the first pipe clamp 42, the second pipe clamp 43, and the third pipe clamp 44 respectively through the rod end ball joint 56, which is a 30mm diameter universal ball joint.

[0069] After adjusting the resultant force direction of the hoisting adjustment plate 50 and the hoisting rope 57 by adjusting the tenth adjustment body 51 and the eleventh adjustment body 52, the hoisting rope 57 connected to the hoisting adjustment plate 50 is pulled by external hoisting equipment to hoist the grid segment 41. The hoisting rope 57 is a steel wire rope with a diameter of 30mm.

[0070] A fourth column hoop 58 is installed on the outside of the column side concrete 40, and a hoop side support plate 80 is vertically welded on the fourth column hoop 58. Both the fourth column hoop 58 and the hoop side support plate 80 are made of steel plate with a thickness of 10mm. The fourth column hoop 58 includes two hoop plates with the same shape and the same cross-sectional shape as the column side concrete 40.

[0071] An adjustable support column 59 is vertically welded onto the hoop side support plate 80. The adjustable support column 59 includes a screw with a diameter of 20mm and a nut, and the tightening directions of the screws on both sides of the nut are opposite.

[0072] On the lower floor slab 20, column base support plates 61 and beam support columns 60 are installed sequentially from bottom to top, and the column base support plates 61 and beam support columns 60 are vertically welded firmly. Both the column base support plates 61 and beam support columns 60 are made of steel plates with a thickness of 10mm.

[0073] A beam end limiting hoop 62 is vertically welded to the top of the crossbeam support column 60. The beam end limiting hoop 62 is made of steel plate with a thickness of 10mm and is sleeved on the end of the fixed crossbeam 63.

[0074] The fixed beam 63 is made of 10mm thick steel plate. A cross-section T-shaped beam groove 82 is pre-set on the fixed beam 63, and the top elevation of the fixed beam 63 is the same as the bottom elevation of the upper floor slab 81. The upper floor slab 81 is a 110mm thick cast-in-place reinforced concrete floor slab.

[0075] The sliding crossbeam 65 is made of steel plate with a thickness of 10mm and has a crossbeam connecting tenon 83 that can move along the crossbeam sliding groove 82 welded on its upper surface. The crossbeam connecting tenon 83 is made of steel plate with a thickness of 10mm and has a cross section in the shape of "T".

[0076] The lateral position of the sliding crossbeam 65 is adjusted by a lateral adjustment bolt 64 provided between the fixed crossbeam 63 and the sliding crossbeam 65. The lateral adjustment bolt 64 includes a screw with a diameter of 20 mm and a nut, and the tightening directions of the screws on both sides of the nut are opposite.

[0077] The first corner brace 66 is made of steel plate with a thickness of 10mm and has an "L" shaped cross section. The eighth vertical adjustment body 67 and the ninth horizontal adjustment body 68 are welded on the first corner brace 66. Both the eighth adjustment body 67 and the ninth adjustment body 68 include a screw and a nut with a diameter of 20mm, and the tightening directions of the screws on both sides of the nut are opposite.

[0078] An angle brace connecting groove 73 is provided between the eighth adjusting body 67 and the second angle brace 72, and the eighth adjusting body 67 is connected to the angle brace connecting groove 73 by a sliding groove connecting plate 84 welded to the top end; the angle brace connecting groove 73 is made of steel plate with a thickness of 10mm and a sliding groove with a cross section of "T" is provided on the angle brace connecting groove 73; the sliding groove connecting plate 84 is made of steel plate with a thickness of 10mm and has a cross section of "T".

[0079] The second corner brace 72 is made of 10mm thick steel plate and has an "L" shaped cross section.

[0080] Assembled support columns 69 are vertically welded onto the second corner brace 72, and assembled cross braces 70 and grid guide grooves 71 are sequentially welded onto the assembled support columns 69. The assembled support columns 69 and the assembled cross braces 70 are both made of steel plates with a thickness of 10mm, and the assembled support columns 69 and the assembled cross braces 70 are vertically welded firmly.

[0081] The space frame guide channel 71 is made of 10mm thick steel plate, with a cross-section in the shape of an arc. Its inner diameter is the same as the outer diameter of the steel pipe of the space frame segment 41, and the curvature of its longitudinal section arc is the same as the curvature of the space frame segment 41.

[0082] This invention is not limited to the preferred embodiments described above. Anyone can derive other products in various forms under the guidance of this invention. However, regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. A construction method for a steel beam with a large cantilevered curved surface connecting to a corbel, characterized in that, include: 1) Positioning and installation of transverse corbels and diagonal corbels: The assembly slide (1) is connected to the rigid steel column (3) through the column side clamp (2), and a fixed support plate (6) is welded to the end of the assembly slide (1) away from the diagonal corbel (4). The bottom end of the sliding support plate (7) is connected to the assembly slide (1) through the support plate tenon (8), and the side is connected to the fixed support plate (6) through the first adjusting body (9). A counter-pressure support plate (10) and a second adjusting body (11) are set on the side of the sliding support plate (7) facing the diagonal corbel (4), and the counter-pressure support plate (10) is connected to the arc-shaped support plate (12) through the third adjusting body (13). The second adjusting body (11) is connected to the arc-shaped support plate (12) through the conversion support plate (14). Next, a first support groove (15) and a second support groove (16) are set on the lower surface of the arc-shaped support plate (12), and the positions of the first support groove (15) and the second support groove (16) correspond to the positions of the inclined corbel (4) and the transverse corbel (5), respectively; 2) Concrete formwork pouring on the column side: The rigid steel column (3), transverse corbel (5) and inclined corbel (4) connected as a whole are hoisted by external hoisting equipment and placed on the lower frame column (17) that has been constructed; First, the column bottom sand box (18) is moved to a set distance from the outside of the rigid steel column (3), and then a wedge-shaped stabilizer (21) is set between the inclined bottom plate (19) of the column bottom sand box (18) and the lower floor slab (20), and then the column bottom sand box is used to form a concrete support. (18) The top sand-filling funnel (22) fills the column base sand box (18) with counterweight sand (23), and welds the template support column (24) to the top outside of the column base sand box (18). A template limiting groove (25) is set on the top of the lower frame column (17), and the template limiting groove (25) is firmly connected to the lower frame column (17) by the first column hoop (26). A column side mold (27) is set on the outside of the rigid steel column (3), and a second column hoop (28) and a third column hoop (29) are set on the outside of the column side mold (27). A fourth adjusting body (30) is set between the second column hoop (28) and the template support column (24), and a third adjusting body (30) is set between the third column hoop (29) and the template support column (24). The fifth adjusting body (31) sets a cantilever support plate (32) on the side of the third column hoop (29) away from the template support column (24), and sets a template support pier (33) on the upper surface of the cantilever support plate (32). A leg side formwork (34) is set between the transverse corbel (5) and the inclined corbel (4), and an interface sealing layer (35) is set at the joint between the leg side formwork (34) and the inclined corbel (4) and the transverse corbel (5). First, the transverse position of the leg side formwork (34) is controlled by the sixth adjusting body (36), and then the leg side formwork (34) is tightly connected with the inclined corbel (4) and the transverse corbel (5) by the seventh adjusting body (37). Column side concrete (40) is poured in the column side formwork (27).3) Removal of column side formwork: After the column side concrete (40) has reached its strength, first release the constraints of the sixth adjusting body (36) and the seventh adjusting body (37) on the leg side formwork (34), then remove the leg side formwork (34), then remove the first column hoop (26), the second column hoop (28) and the third column hoop (29), and then remove the column side formwork (27). Then blow air onto the counterweight sand body (23) through the sand discharge fan (38) on the column base sand box (18), so that the counterweight sand body (23) passes through the sand discharge pipe (39). 4) Pre-alignment hoisting of the space frame unit: Set the first pipe clamp (42), the second pipe clamp (43) and the third pipe clamp (44) along the length of the space frame segment (41), and set the transverse inner brace (45) between the first pipe clamp (42) and the third pipe clamp (44), and set the vertical inner brace (46) between the second pipe clamp (43) and the transverse inner brace (45), set the hoisting beam groove (48) and the beam top support plate (49) on the rigid hoisting beam (47), and make the two hoisting beams... The adjusting plate (50) moves along the sliding groove (48) of the lifting beam under the action of the tenth adjusting body (51) and the eleventh adjusting body (52). The first lifting rod (53), the second lifting rod (54) and the third lifting rod (55) are arranged at intervals on the lower surface of the rigid lifting beam (47). The first lifting rod (53) is connected to the first pipe clamp (42), the second lifting rod (54) is connected to the second pipe clamp (43), and the third lifting rod (55) is connected to the third pipe clamp (44). The rod end ball joints (56) are respectively set at the joints of the first lifting rod (53) and the first pipe clamp (42), the second lifting rod (54) and the second pipe clamp (43), and the third lifting rod (55) and the third pipe clamp (44), so that the lifting plates on both sides can be adjusted. The adjustment plate (50) is connected to the hoisting rope (57). After the space frame segment (41) is lifted by the hoisting rope (57), the lengths of the first hoisting rod (53), the second hoisting rod (54) and the third hoisting rod (55) are adjusted so that the tilt angle of the space frame segment (41) is the same as the installation angle. Then, the resultant force direction of the hoisting adjustment plate (50) and the hoisting rope (57) is adjusted by the tenth adjustment body (51) and the eleventh adjustment body (52) so that it is the same as the centroid of the space frame segment (41). 5) Installation of suspended support for space frame unit: A fourth column hoop (58) is installed on the outside of the concrete (40) on the column side, and an adjustable support column (59) is installed on the fourth column hoop (58). A crossbeam support column (60) is installed on the lower floor slab (20), and a column bottom support plate (61) is installed at the junction of the crossbeam support column (60) and the lower floor slab (20). A beam end limiting hoop (62) is installed at the top of the crossbeam support column (60). At the same time, a fixed crossbeam (63) is installed at the top of the crossbeam support column (60) and the adjustable support column (59), and the lateral position of the sliding crossbeam (65) is adjusted by the lateral adjustment bolt (64). A first corner brace (66) is installed on the upper surface of the sliding crossbeam (65). The eighth vertical adjustment body (67) and the ninth horizontal adjustment body (68) are welded onto the first corner brace (66); the assembly cross brace (70) and the space frame guide groove (71) are sequentially set on the assembly support column (69) facing the space frame segment (41); the second corner brace (72) is welded to the bottom of the assembly support column (69) and the second corner brace (72) is connected to the eighth adjustment body (67) through the corner brace connecting groove (73); the vertical and horizontal positions of the second corner brace (72) and the space frame guide groove (71) are adjusted simultaneously through the eighth adjustment body (67) and the ninth adjustment body (68); and the space frame segment (41) is welded to the inclined bracket (4) and the horizontal bracket (5).

2. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, The top surface of the column side clamp (2) is welded to the assembly slide (1). The assembly slide (1) is provided with a "T" shaped channel for the sliding support plate tenon (8) to slide. The sliding support plate (7) passes through the channel of the assembly slide (1) and the bottom support plate tenon (8) slides in the assembly slide (1).

3. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, The first adjusting body (9) includes a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. Both ends are welded perpendicularly to the fixed support plate (6) and the sliding support plate (7), respectively. The second adjusting body (11) includes a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. Both ends are welded to the sliding support plate (7) and the conversion support plate (14), respectively. The third adjusting body (13) includes a screw and a nut, with the tightening directions of the screws on both sides of the nut being opposite. One end is welded to the counter-pressure support plate (10), and the other end is connected to the arc-shaped support plate (12) through the first bolt hinge (74). The arc-shaped support plate (12) is provided with a conversion support plate (14) on the side near the second adjusting body (11), and the conversion support plate (14) is connected to the second adjusting body (11).

4. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, A sand-filling funnel (22) and a sand-discharging fan (38) are installed on the top plate of the column base sand box (18). A sand-discharging pipe (39) is installed on the side wall of the column base sand box (18). A sand box inclined bottom plate (19) is installed at the bottom of the column base sand box (18). A moving roller (76) is installed at the lower part of the sand box inclined bottom plate (19). An inclined surface is provided on the upper surface that is inclined towards the sand-discharging pipe (39). An inclined surface is provided on the lower surface that is connected to the wedge-shaped stabilizer (21).

5. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, The fourth adjusting body (30) and the fifth adjusting body (31) both include screws and nuts, and the tightening directions of the screws on both sides of the nut are opposite. One end is vertically welded to the template support column (24), and the other end is welded to the second column hoop (28) and the third column hoop (29) respectively. The sixth adjusting body (36) includes screws and nuts, and the two ends of the sixth adjusting body (36) are welded to the leg side mold (34) and the template support pier (33) respectively. The seventh adjusting body (37) includes screws and nuts, and the two ends of the seventh adjusting body (37) are connected to the leg side mold (34) through the second bolt hinge (78) respectively.

6. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, Both the transverse inner brace (45) and the vertical inner brace (46) include screws and nuts, and the tightening directions of the screws on both sides of the nut are opposite. The transverse inner brace (45) and the vertical inner brace (46) are connected to the first pipe clamp (42), the second pipe clamp (43) and the third pipe clamp (44) respectively through the support end ball joint (79).

7. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, A lifting beam groove (48) with an inverted "T" shaped cross section is pre-set on the rigid lifting beam (47). A beam top support plate (49) is welded to each end of the rigid lifting beam (47). Two lifting adjustment plates (50) are slidably set in the lifting beam groove (48), and the lifting beam groove (48) on each side is connected to the beam top support plate (49) through the tenth adjustment body (51) and the eleventh adjustment body (52) with adjustable length. The tenth adjustment body (51) and the eleventh adjustment body (52) both include screws and nuts, and the tightening directions of the screws on both sides of the nut are opposite. The two ends are welded to the beam top support plate (49) and the lifting adjustment plate (50) respectively.

8. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, The fourth column hoop (58) is fitted onto the column side concrete (40), and the fourth column hoop (58) is provided with a hoop side support plate (80) perpendicular to the column side concrete (40). An adjustable support column (59) parallel to the column side concrete (40) is welded to the hoop side support plate (80). A fixed crossbeam (63) is provided at the top of the adjustable support column (59). A crossbeam slide groove (82) with a "T" shaped cross section is preset on the fixed crossbeam (63). The sliding crossbeam (65) is slidably connected to the fixed crossbeam (63), and the top elevation of the fixed crossbeam (63) is the same as the bottom elevation of the upper floor slab (81). The bottom of the fixed crossbeam (63) is provided with a horizontal adjustment bolt (64) with adjustable length. One end of the horizontal adjustment bolt (64) is connected to the sliding crossbeam (65) to adjust the horizontal position of the sliding crossbeam (65).

9. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, A first corner brace (66) is provided at the end of the upper surface of the sliding crossbeam (65) away from the fixed crossbeam (63). The first corner brace (66) is designed as an L-shaped structure. A vertical eighth adjustment body (67) is welded on the side of the first corner brace (66) parallel to the sliding crossbeam (65). A horizontal ninth adjustment body (68) is welded on the side of the first corner brace (66) perpendicular to the sliding crossbeam (65). The bottom of the assembly support column (69) is connected to the eighth adjustment body (67) and the ninth adjustment body (68) through the second corner brace (72). The bottom of the second corner brace (72) is connected to the eighth adjustment body (67) through the corner brace connecting groove (73). The side wall of the second corner brace (72) is directly connected to the ninth adjustment body.

10. The construction method for the large cantilever curved surface connected corbel steel beam according to claim 1, characterized in that, The assembly support column (69) is provided with assembly cross bracing (70) and space frame guide groove (71) in sequence facing the space frame segment (41), wherein at least two assembly cross bracing (70) are set perpendicular to the assembly support column (69), and the space frame guide groove (71) is set at the top of the assembly cross bracing (70) facing the space frame segment (41).

Images