Construction method of in-situ assembly of large special-shaped steel anchor beams

Abstract

The present invention relates to a method for in-situ assembly of large-scale special-shaped steel anchor beams in sections, wherein a sliding position control body is provided between a sliding pressure plate and an adjacent chute support column, and a transverse position control body is provided facing the rigid frame side; a first side pressure bolt, a second side pressure bolt, and a third side pressure bolt are provided on the side wall of the anchor beam back plate; a vertical positioning body and a hoisting guide groove are provided on the platform top plate, and the vertical and transverse positions of the lower steel anchor beam are corrected by the vertical positioning body and the first positioning bolt respectively; the two side surfaces of the anchor beam back plate are heated and cooled respectively by the first temperature control tube and the second temperature control tube; a support frame hanging plate is provided on the lower steel anchor beam, and the support frame column and the chute top hanging plate are connected by an oblique hanging bolt, and a transverse connecting bolt is provided between the two support frame columns; the vertical position and transverse position of the upper steel anchor beam are controlled by the third positioning bolt and the second positioning bolt respectively. The present invention improves the installation efficiency and accuracy of the anchor beam back plate and the steel anchor beam, and reduces the temperature deformation of the thick steel plate during welding.

Description

Technical Field

[0001] The present invention relates to a method for in-situ assembly of large-scale special-shaped steel anchor beam sections, which can improve the installation efficiency and accuracy of anchor beam back plates and steel anchor beams and reduce the welding temperature deformation of thick steel plates. The method is suitable for steel structure cable tower steel anchor beam installation projects. Background Art

[0002] The installation of cable tower steel anchor beams typically involves hoisting and securing the anchor beam backplate, installing the steel anchor beam, and welding the steel anchor beam and anchor beam backplate together. During on-site construction, shortening the time required to deploy the support structure, improving the accuracy of the installation and positioning of the steel anchor beam and anchor beam backplate, and enhancing the welding quality between the steel anchor beam and anchor beam backplate have always been key and challenging aspects of on-site engineering control.

[0003] In the existing construction technology, there is a cable tower box-type steel anchor beam installation structure, which adopts standardized lifting equipment to lift the steel anchor beam, and a main beam of the standardized lifting equipment for eliminating the internal force of the wall panel is provided on the top; the steel anchor beam of the first section is accurately installed by the said two-way guide limit bracket; the steel anchor beam of the standard section is accurately installed with the assistance of the said strong core skeleton, and the steel anchor beam adopts the said transverse adjustment jack, longitudinal adjustment jack and height adjustment jack for high-precision control and deviation correction; this technology uses jacks to install and position the steel anchor beam, and although it can solve the problem of two-way positioning of the steel anchor beam, it fails to simultaneously achieve the problems of bracket-assisted vertical position adjustment of the anchor beam, reduction of welding stress of the steel anchor beam, efficient erection of construction bracket, and accurate positioning of the anchor beam back plate.

[0004] In view of this, in order to improve the construction quality of steel anchor beams, it is urgent to invent a construction method for in-situ assembly of large-scale special-shaped steel anchor beams in sections, which can improve the installation efficiency and accuracy of the anchor beam back plate and the steel anchor beam and reduce the welding temperature deformation of thick steel plates. Summary of the Invention

[0005] The purpose of the present invention is to provide a large-scale special-shaped steel anchor beam segmented in-situ assembly construction method which can not only improve the installation efficiency and accuracy of the anchor beam back plate and the steel anchor beam, but also reduce the welding temperature deformation of the thick steel plate.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] The construction method of in-situ assembly of large special-shaped steel anchor beams in sections includes the following construction steps:

[0008] 1) Construction preparation: Tie and fix the rigid skeleton and tower column reinforcement cage; pour the tower column concrete, and pour concrete inside the tower column concrete to form the tower inner horizontal plate;

[0009] 2) Installation of the anchor beam back plate installation platform: Platform support columns are set on the upper surface of the horizontal plate in the tower, and the platform top plate is laid on the upper end of the platform support columns; two first sliding support plates are set on the platform top plate, and a sliding slide groove with a "T"-shaped cross section is set on the first sliding support plates; a fixed-length support column is set on the upper surface of each first sliding support plate; the sliding bottom plate at the bottom end of the second sliding support plate is slidably connected to the slide groove, and a sliding control body is set between the second sliding support plate and the adjacent fixed-length support column; two transverse control bodies are set on the side of the second sliding support plate facing the rigid frame, and one end of the transverse control body is connected to the guide pressure plate through an angle adjustment shaft; a column top support beam, a lifting control body and a lifting platform plate are sequentially set on the top of the fixed-length support column;

[0010] 3) Anchor beam back plate installation: a first side pressure bolt is set on one side of the lower surface of the slab top suspension beam, and a second side pressure bolt and a third side pressure bolt are set on the other side, and the slab top suspension beam is connected to the external lifting equipment via the first lifting rope; the top end of the anchor beam back plate is connected to the slab top suspension beam via the slab top connecting rope; the side surface of the slab top suspension beam contacts the support rollers at the ends of the first side pressure bolt, the second side pressure bolt, and the third side pressure bolt; first, the inclination angle of the guide pressure plate is controlled by the transverse position control body, and then the anchor beam back plate is hoisted to the set position by the external lifting equipment, and the transverse position control body is used to apply positioning pressure to the anchor beam back plate to make it close to the rigid frame; back plate support bars are set on the outer side of the tower column concrete, and back plate positioning bolts are set between the back plate support bars and the anchor beam back plate;

[0011] 4) Assembled positioning of the lower steel anchor beam: A vertical alignment body and a hoisting guide groove are installed on the platform top plate, and a first alignment bolt is installed on the side wall of the hoisting guide groove. The hanger positioning groove on the lower surface of the hanger support plate is connected to the lower steel anchor beam via the hanger compression bolt. The hanger support plate is connected to the external lifting equipment via a second lifting rope. The lower steel anchor beam is hoisted into the hoisting guide groove and placed on the upper end of the vertical alignment body. The vertical and lateral positions of the lower steel anchor beam are corrected using the vertical alignment body and the first alignment bolt respectively.

[0012] 5) Welding and fixing of the lower steel anchor beam: Install a first temperature control tube on the side of the anchor beam backplate facing away from the lower steel anchor beam, and install a second temperature control tube on the side of the anchor beam backplate facing the lower steel anchor beam. The first temperature control tube and the second temperature control tube are connected to the heating equipment and cooling equipment respectively. First, the temperature of the anchor beam backplate facing away from the lower steel anchor beam is raised by 200-300°C through the first temperature control tube. Then, external welding equipment is used to weld the lower steel anchor beam and the anchor beam backplate firmly together. During the welding operation, the second temperature control tube is used to simultaneously reduce the temperature of the anchor beam backplate facing the lower steel anchor beam by 50-100°C.

[0013] 6) Installation of inter-beam support platforms: Install support hangers on the lower steel anchor beams and securely connect the support hangers to the lower steel anchor beams via hanger fastening bolts; install column slides and trough top hangers on the upper surfaces of the support hangers; first, insert the column bottom support plates at the bottom ends of the two support columns into the column slides and slide them to both sides of the trough top hanger, then install column side hoops on the support columns and hang oblique bolts between the column side hoops and the trough top hanger, then install transverse connecting bolts between the two mirror-image support columns; install a third alignment bolt on the upper part of the support column, the bottom end of the third alignment bolt is connected to the support column via the column top cap, and the top end of the third alignment bolt is provided with a bolt top connecting groove;

[0014] 7) Installation of the upper steel anchor beam: According to the spatial position of the upper steel anchor beam, weld transverse positioning grooves on the two anchor beam back plates respectively, and set a second positioning bolt on the transverse positioning groove; first use external lifting equipment to lift the upper steel anchor beam to the bolt top connection groove, and make the two ends of the upper steel anchor beam respectively located in the transverse positioning groove, and then use the second positioning bolt and the third positioning bolt to control the transverse position and vertical position of the upper steel anchor beam, and then repeat step 5) to weld the upper steel anchor beam to the anchor beam back plate firmly.

[0015] Preferably, in step 2), the lateral position control body and the lifting position control body are both hydraulic jacks.

[0016] Preferably, in step 3), the first side pressure bolt, the second side pressure bolt and the third side pressure bolt are all hydraulic jacks, and one end of the first side pressure bolt, the second side pressure bolt and the third side pressure bolt are welded to the plate top suspension beam; the anchor beam back plate is made of rolled steel plate; the plate top suspension beam is made of rolled steel plate, and the plate top suspension beam is preset with holes for the plate top connecting rope to pass through, and the top surface of the plate top suspension beam is firmly connected to the first suspension rope.

[0017] Preferably, in step 3), an inflatable built-in airbag is provided on the lower surface of the hanger support plate, and the built-in airbag is located in the hanging guide groove; when the lower steel anchor beam is hung, the built-in airbag is placed between the upper surface of the lower steel anchor beam and the lower surface of the hanger support plate.

[0018] Preferably, in step 4), the cross section of the hanging guide groove is "U"-shaped, and the first alignment bolt is threadedly connected to the threaded hole on the side wall of the hanging guide groove; the vertical alignment body adopts a hydraulic jack.

[0019] Preferably, in step 4), the hanger positioning groove includes two mirror-image steel plates, and the hanger clamping bolts are threadedly connected to the threaded holes on the two steel plates; when lifting the lower steel anchor beam, the lower steel anchor beam is placed in the hanger positioning groove, and the two sides of the lower steel anchor beam are tightened by the hanger clamping bolts, thereby fixing the lower steel anchor beam.

[0020] Preferably, in step 5), both the first temperature control tube and the second temperature control tube are made of rolled steel pipes.

[0021] Preferably, in step 6), the support frame hanging plate is made of rolled steel plate, with a "U"-shaped cross-section, and screw holes connected to the hanging plate fastening bolts are set on the side walls; the hanging plate fastening bolts are threadedly connected to the screw holes and are located on both sides of the lower steel anchor beam, and the hanging plate fastening bolts are pressed against the two side surfaces of the lower steel anchor beam, thereby fixing the support frame hanging plate.

[0022] Preferably, the column slide is made of rolled steel plates, and a groove with an inverted "T"-shaped cross section connected to the column bottom support plate is provided on the column slide; the groove top hanging plate is made of rolled steel plates with a "T"-shaped cross section, and is welded to the column slide; the column side hoop is provided with a hoop side hanging groove connected to the oblique hanging bolt and the transverse connecting bolt; the two ends of the oblique hanging bolt are respectively connected to the column side hoop and the groove top hanging plate through hooks; the two ends of the transverse connecting bolt are respectively connected to the column side hoop through hooks.

[0023] The present invention has the following characteristics and beneficial effects

[0024] (1) A sliding support plate and a sliding chute are set on the platform top plate, and a sliding position control body is set between the sliding pressure plate and the adjacent chute support column. A transverse position control body is set on the side of the sliding pressure plate facing the rigid frame, and the transverse position control body is connected to the guide pressure plate through an angle adjustment shaft, so that the bottom end of the anchor beam back plate can be pushed and pressed to control the position.

[0025] (2) One side of the anchor beam back plate is connected to the first side pressure bolt, and the other side is connected to the second side pressure bolt and the third side pressure bolt. The anchor beam back plate can be calibrated by top pressure from different heights and different top pressure directions, thus realizing the aerial adjustment of the anchor beam back plate.

[0026] (3) A vertical alignment body and a hoisting guide groove are set on the platform top plate. The vertical and horizontal positions of the lower steel anchor beam can be corrected by the vertical alignment body and the first alignment bolt respectively, thereby realizing the accurate installation and positioning of the lower steel anchor beam.

[0027] (4) A first temperature control tube is set on the side of the anchor beam back plate facing away from the lower steel anchor beam, and a second temperature control tube is set on the side facing the steel anchor beam. The first temperature control tube and the second temperature control tube can be used to heat up and cool down the two side surfaces of the anchor beam back plate respectively, thereby reducing the welding temperature stress between the anchor beam back plate and the steel anchor beam.

[0028] (5) A support plate is set on the lower steel anchor beam, and a column slide and a trough top plate are set on the support plate. The support column and the trough top plate are connected by an oblique hanging bolt, and a horizontal connecting bolt is set between the two support columns, thereby realizing the efficient layout of the support platform between the beams.

[0029] (6) A third positioning bolt is set on the upper part of the support column, and a transverse positioning groove is welded on the back plate of the anchor beam. The vertical position and transverse position of the upper steel anchor beam can be controlled by the third positioning bolt and the second positioning bolt respectively, which reduces the difficulty of positioning the upper steel anchor beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a construction flow chart for the in-situ assembly of large special-shaped steel anchor beams in sections;

[0031] Figure 2 yes Figure 1 Schematic diagram of the anchor beam back plate installation platform structure;

[0032] Figure 3 yes Figure 1 Schematic diagram of the anchor beam back plate hoisting and positioning structure;

[0033] Figure 4 yes Figure 1 Schematic diagram of the lower layer steel anchor beam combined positioning structure;

[0034] Figure 5 yes Figure 4 Schematic diagram of the lower steel anchor beam hoisting structure;

[0035] Figure 6 yes Figure 4 Schematic diagram of the transverse alignment structure of the lower steel anchor beam;

[0036] Figure 7 yes Figure 1 Schematic diagram of the upper steel anchor beam installation structure;

[0037] Figure 8 yes Figure 7 Schematic diagram of the connection structure between the support hanging plate and the column slide.

[0038] In the figure: 1-rigid skeleton; 2-tower column steel cage; 3-tower column concrete; 4-tower inner horizontal plate; 5-platform support column; 6-platform top plate; 7-first sliding support plate; 8-sliding slide; 9-fixed length support column; 10-second sliding support plate; 11-sliding bottom plate; 12-sliding position control body; 13-lateral position control body; 14-guide pressure plate; 15-angle adjustment shaft; 16-column top support beam; 17-lifting position control body; 18-lifting platform plate; 19-vertical alignment body; 20-hanging guide groove; 21-first alignment bolt; 22-slab top hanging beam; 23-first side pressure bolt; 24-second side pressure bolt; 25-third side pressure bolt; 26-first lifting rope; 27-anchor beam back plate; 28-slab top Connecting cable; 29-support roller; 30-back plate support bar; 31-back plate positioning bolt; 32-hanger support plate; 33-hanger positioning slot; 34-lower steel anchor beam; 35-hanger pressing bolt; 36-second lifting rope; 37-first temperature control tube; 38-second temperature control tube; 39-support frame hanging plate; 40-hanging plate fastening bolt; 41-column slide groove; 42-groove top hanging plate; 43-support frame column; 44-column bottom support plate; 45-column side hoop; 46-oblique hanging bolt; 47-transverse connecting bolt; 48-third alignment bolt; 49-column top cap; 50-bolt top connecting groove; 51-hoop side hanging groove; 52-upper steel anchor beam; 53-transverse positioning slot; 54-second alignment bolt; 55-built-in airbag. DETAILED DESCRIPTION

[0039] The technical requirements for tower column concrete pouring construction, tower column steel cage binding construction, rigid frame construction technical requirements, etc. will not be repeated in this embodiment, and the focus will be on the implementation method of the method involved in the present invention.

[0040] Figure 1 This is the construction flow chart of the in-situ assembly of large special-shaped steel anchor beams. Figure 1 As shown in the figure, the construction method of in-situ assembly of large special-shaped steel anchor beams in sections includes the following construction steps:

[0041] 1) Construction preparation: Tie and secure the rigid frame 1 and the tower column reinforcement cage 2; pour the tower column concrete 3, and pour concrete inside the tower column concrete 3 to form the tower inner horizontal plate 4;

[0042] 2) Erection of the anchor beam back plate installation platform: 2~3 pairs of platform support columns 5 are set on the upper surface of the horizontal plate 4 in the tower, and a platform top plate 6 is laid on the upper surface of the platform support columns 5; two first sliding support plates 7 are set on the platform top plate 6, and a push slide 8 with a "T"-shaped cross section is set on the first sliding support plate 7; four fixed-length support columns 9 are set on the upper surface of each first sliding support plate 7, so that the bottom end of the second sliding support plate 10 is connected to the push slide 8 through the sliding bottom plate 11, and a sliding control body 12 is set between the second sliding support plate 10 and the adjacent fixed-length support column 9; two transverse control bodies 13 are set on the side of the second sliding support plate 10 facing the rigid frame 1, and the transverse control bodies 13 are connected to the guide pressure plate 14 through the angle adjustment shaft 15; a column top support beam 16, a lifting control body 17 and a lifting platform plate 18 are sequentially set on the top of the fixed-length support column 9;

[0043] 3) Installation of anchor beam back plate: a first side pressure bolt 23 is provided on one side of the lower surface of the slab top suspension beam 22, a second side pressure bolt 24 and a third side pressure bolt 25 are provided on the other side, and a first lifting rope 26 is provided on the upper surface of the slab top suspension beam 22, and the first lifting rope 26 connects the slab top suspension beam 22 to the external lifting equipment; the top end of the anchor beam back plate 27 is connected to the slab top suspension beam 22 through the slab top connecting rope 28; the side surface of the slab top suspension beam 22 contacts the support rollers 29 at the ends of the first side pressure bolt 23, the second side pressure bolt 24 and the third side pressure bolt 25; firstly, the inclination angle of the guide pressure plate 14 is controlled by the transverse position control body 13, and then the anchor beam back plate 27 is hoisted to the set position by the external lifting equipment, and the transverse position control body 13 is used to apply a positioning top pressure to the anchor beam back plate 27 so that it is close to the rigid frame 1; a back plate support rib 30 is provided on the outer side of the tower column concrete 3, and a back plate positioning bolt 31 is provided between the back plate support rib 30 and the anchor beam back plate 27;

[0044] 4) Lower-layer steel anchor beam assembly positioning: A vertical alignment body 19 and a hoisting guide groove 20 are provided on the platform top plate 6, and a first alignment bolt 21 is provided on the side wall of the hoisting guide groove 20. The hanger positioning groove 33 on the lower surface of the hanger support plate 32 is connected to the lower-layer steel anchor beam 34 via a hanger pressing bolt 35. A second lifting rope 36 is provided at the upper end of the hanger support plate 32, and an external lifting device is connected to the second lifting rope 36 to lift the lower-layer steel anchor beam 34 into the hoisting guide groove 20 and place it on the upper end of the vertical alignment body 19. The vertical and lateral positions of the lower-layer steel anchor beam 34 are corrected using the vertical alignment body 19 and the first alignment bolt 21, respectively.

[0045] 5) Welding and fixing the lower steel anchor beam: Install a first temperature control tube 37 on the side of the anchor beam back plate 27 facing away from the lower steel anchor beam 34, and install a second temperature control tube 38 on the side of the anchor beam back plate 27 facing the lower steel anchor beam 34. Connect the first temperature control tube 37 and the second temperature control tube 38 to the heating device and the cooling device, respectively. Correct the position of the lower steel anchor beam 34. First, use the first temperature control tube 37 to increase the temperature of the side of the anchor beam back plate 27 facing away from the anchor beam back plate 27 by 200-300°C. Then, use external welding equipment to weld the lower steel anchor beam 34 to the anchor beam back plate 27 firmly. During the welding operation, use the second temperature control tube 38 to simultaneously reduce the temperature of the side of the anchor beam back plate 27 facing the anchor beam back plate 27 by 50-100°C.

[0046] Among them, a medium with a certain temperature is introduced into the first temperature control tube 37 through a heating device, thereby heating one side of the anchor beam back plate 27; a medium with a certain temperature is introduced into the second temperature control tube 38 through a cooling device, thereby cooling one side of the anchor beam back plate 27; during actual construction, heat transfer oil or gas can be used as the medium.

[0047] 6) Erection of the support platform between beams: a support frame hanging plate 39 is set on the lower steel anchor beam 34, and the support frame hanging plate 39 is firmly connected to the lower steel anchor beam 34 through the hanging plate fastening bolt 40; a column slide groove 41 and a groove top hanging plate 42 are set on the upper surface of the support frame hanging plate 39; first, the column bottom support plates 44 at the bottom ends of the two support columns 43 are respectively inserted into the column slide groove 41, and slide to the two sides of the groove top hanging plate 42 respectively, then the column side hoop 45 is sleeved on the support column 43, and an oblique hanging bolt 46 is hung between the column side hoop 45 and the groove top hanging plate 42, and then a transverse connecting bolt 47 is set between the two mirror-opposite support columns 43; a third alignment bolt 48 is set on the upper part of the support column 43, and the bottom end of the third alignment bolt 48 is connected to the support column 43 through the column top sleeve cap 49, and the top of the third alignment bolt 48 is provided with a bolt top connecting groove 50;

[0048] 7) Installation of the upper steel anchor beam 52: According to the spatial position of the upper steel anchor beam 52, transverse positioning grooves 53 are welded on the two anchor beam back plates 27 respectively, and a second positioning bolt 54 is set on the transverse positioning groove 53; first, use an external lifting setting to lift the upper steel anchor beam 52 onto the bolt top connection groove 50, and make the two ends of the upper steel anchor beam 52 respectively located in the transverse positioning groove 53, and then use the third positioning bolt 48 to control the vertical position of the upper steel anchor beam 52, and then repeat step 5) to weld the upper steel anchor beam 52 to the anchor beam back plate 27 firmly.

[0049] Figure 2 yes Figure 1 Schematic diagram of the anchor beam back plate installation platform structure. Figure 3 yes Figure 1 Schematic diagram of the anchor beam back plate hoisting and positioning structure, Figure 4 yes Figure 1 Schematic diagram of the lower steel anchor beam combined positioning structure, Figure 5 yes Figure 4 Schematic diagram of the lower steel anchor beam hoisting structure, Figure 6 yes Figure 4 Schematic diagram of the transverse alignment structure of the lower steel anchor beam. Figure 7 yes Figure 1 Schematic diagram of the upper steel anchor beam installation structure, Figure 8 yes Figure 7 Schematic diagram of the connection structure between the support bracket and the column slide. Figures 2 to 8 As shown in the figure, the large-scale special-shaped steel anchor beam segmented in-situ assembly construction method is provided, wherein a sliding position control body 12 is provided between the second sliding support plate 10 and the adjacent fixed-length support column 9, and a transverse position control body 13 is provided facing the side of the rigid frame 1; a first side pressure bolt 23, a second side pressure bolt 24 and a third side pressure bolt 25 are provided on the side wall of the anchor beam back plate 27; a vertical position correction body 19 and a hoisting guide groove 20 are provided on the platform top plate 6, and the lower steel anchor beam is corrected by the vertical position correction body 19 and the first position correction bolt 21 respectively. The vertical position and horizontal position of the beam 34; the two side surfaces of the anchor beam back plate 27 are heated and cooled respectively by the first temperature control tube 37 and the second temperature control tube 38; a support hanging plate 39 is set on the lower steel anchor beam 34, and the support column 43 is connected to the trough top hanging plate 42 by an oblique hanging bolt 46, and a horizontal connecting bolt 47 is set between the two support columns 43; the vertical position and horizontal position of the upper steel anchor beam 52 are controlled by the third positioning bolt 48 and the second positioning bolt 54 respectively.

[0050] The rigid frame 1 is made of rolled steel plates with a thickness of 20 mm; the tower column reinforcement cage 2 is made of threaded steel bars with diameters of 32 mm and 25 mm.

[0051] The tower column concrete 3 and the tower inner transverse plate 4 are both cast with commercial concrete of strength grade C50.

[0052] Three pairs of platform support columns 5 are provided on the upper surface of the horizontal plate 4 in the tower, arranged in a rectangular shape. The platform support columns 5 adopt self-locking hydraulic jacks.

[0053] The platform top plate 6 is laid on the upper surface of the platform support column 5. The platform top plate 6 is made of a 3mm thick steel plate and its lower surface is placed on the platform support column 5. The platform top plate 6 is driven to rise and fall by the platform support column 5, thereby controlling the height of the platform top plate 6.

[0054] Two first sliding support plates 7 are provided on the platform top plate 6. The first sliding support plates 7 are rolled from 2 mm thick steel plates, and have a width of 30 cm and a length of 1 m.

[0055] A sliding chute 8 with a T-shaped cross section is provided on the first sliding support plate 7 . The width of the sliding chute 8 is 25 cm and the length is 0.3 m.

[0056] Four fixed-length support columns 9 are provided on the upper surface of each first sliding support plate 7. The fixed-length support columns 9 are rolled from steel pipes with a diameter of 60 mm and a height of 0.5 m.

[0057] The second sliding support plate 10 is rolled from a steel plate with a thickness of 10 mm, a width of 30 cm and a length of 50 cm; the bottom end of the second sliding support plate 10 is connected to the push chute 8 through a sliding bottom plate 11, and the sliding bottom plate 11 is connected to the push chute 8 and can slide along the push chute 8; the sliding bottom plate 11 is rolled from a steel plate with a thickness of 10 mm and a width of 20 cm.

[0058] A sliding position control body 12 is arranged between the second sliding support plate 10 and the adjacent fixed-length support column 9. The sliding position control body 12 includes a screw and a nut with a diameter of 30 mm. The two screws are connected on both sides of the nut, and the tightening directions of the screws on both sides of the nut are opposite. By rotating the middle nut, the sliding position control body 12 is extended or shortened. The extension and contraction direction of the sliding position control body 12 is consistent with the sliding direction of the second sliding support plate 10. The movement of the second sliding support plate 10 is controlled by the extension and contraction of the sliding position control body 12; two lateral position control bodies 13 are arranged on the side of the second sliding support plate 10 facing the rigid frame 1, and the lateral position control body 13 adopts a self-locking hydraulic jack.

[0059] One end of the lateral position control body 13 is connected to the guide pressure plate 14 via an angle adjustment shaft 15, so that the guide pressure plate 14 and the lateral position control body 13 are hinged. The angle adjustment shaft 15 uses a bearing with a diameter of 20mm. The two lateral position control bodies 13 are arranged in an upper and lower position.

[0060] A column top support beam 16, a lifting control body 17, and a lifting platform 18 are sequentially arranged at the top of the fixed-length support column 9. The lifting control body 17 is mounted on the upper surface of the column top support beam 16, and the lifting platform 18 is mounted on the top of the lifting control body 17. The height of the lifting platform 18 is controlled by the lifting control body 17. The column top support beam 16 is rolled from 10mm thick steel plate, has a width of 30cm, and a "U"-shaped cross section. The lifting control body 17 uses a self-locking hydraulic jack. The lifting platform 18 is rolled from 2mm thick steel plate.

[0061] A vertical alignment member 19 and a hoisting guide trough 20 are installed on the platform top plate 6. The vertical alignment member 19 utilizes a self-locking hydraulic jack. The hoisting guide trough 20 has a U-shaped cross-section and is rolled from 10mm thick steel plate with a width of 30cm. A first alignment bolt 21 is installed on the sidewall of the hoisting guide trough 20 and is threaded into a threaded hole in the sidewall. The first alignment bolt 21 is rolled from a 30mm diameter screw.

[0062] The top beam 22 is rolled from 2mm thick steel plate, with a width of 20cm and a height of 10cm. A first side pressure bolt 23 is installed on one side of the bottom surface of the beam 22, and a second side pressure bolt 24 and a third side pressure bolt 25 are installed on the other side. These first, second, and third side pressure bolts 23, 24, 25 are all hydraulic jacks. The support roller 29 is rolled from a 60mm diameter bearing. Among them, one end of the first side pressure bolt 23, the second side pressure bolt 24, and the third side pressure bolt 25 is fixed to the lower surface of the top suspension beam 22, and the support roller 29 is arranged on the other end of the first side pressure bolt 23, the second side pressure bolt 24, and the third side pressure bolt 25; when hoisting the anchor beam back plate 27, the support rollers 29 at the ends of the first side pressure bolt 23, the second side pressure bolt 24, and the third side pressure bolt 25 are pressed against the side surface of the anchor beam back plate 27, and the hoisting angle of the anchor beam back plate 27 can be adjusted by the first side pressure bolt 23, the second side pressure bolt 24, and the third side pressure bolt 25.

[0063] A first suspension rope 26 is provided on the upper surface of the slab top suspension beam 22. The first suspension rope 26 is a steel wire rope with a diameter of 30 mm.

[0064] The anchor beam back plate 27 is rolled from 30mm thick steel plate. The top of the anchor beam back plate 27 is connected to the slab top suspension beam 22 via a slab top connecting cable 28. The slab top suspension beam 22 has a pre-set hole for the slab top connecting cable 28 to pass through. The slab top connecting cable 28 is a 30mm diameter steel wire rope connected to the anchor beam back plate 27 via a lifting ring. Back plate support bars 30 are provided on the outside of the tower column concrete 3, and back plate positioning bolts 31 are provided between the back plate support bars 30 and the anchor beam back plate 27. The back plate support bars 30 are rolled from 10mm thick steel plate and connected to the tower column concrete 3 via anchor bolts. The back plate positioning bolts 31 include a nut and two screws. The two screws are threaded onto either side of the nut, and the tightening directions of the screws on both sides of the nut are opposite. The length of the back plate positioning bolts 31 can be adjusted by rotating the middle nut, thereby assisting in positioning and adjusting the installation of the anchor beam back plate 27.

[0065] The hanger support plate 32 is rolled from 10mm thick steel plate and has a width of 20cm. The hanger positioning groove 33 on the lower surface of the hanger support plate 32 is connected to the lower steel anchor beam 34 via a hanger clamping bolt 35. The hanger positioning groove 33 consists of two mirror-image steel plates, vertically welded to the hanger support plate 32. The steel plates are rolled steel plates with a thickness of 10mm and a width of 30cm. The hanger clamping bolt 35 is threaded into the threaded holes in the two steel plates. When lifting the lower steel anchor beam 34, the lower steel anchor beam 34 is placed in the hanger positioning groove 33, and the hanger clamping bolt 35 presses against both sides of the lower steel anchor beam 34, thereby securing the lower steel anchor beam 34. An inflatable built-in airbag 55 is bonded to the lower surface of the hanger support plate 32, and the built-in airbag 55 is located in the hanger positioning groove 33; when lifting the lower steel anchor beam 34, the built-in airbag 55 is placed between the upper surface of the lower steel anchor beam 34 and the lower surface of the hanger support plate 32.

[0066] The lower steel anchor beam 34 and the upper steel anchor beam 52 are both rolled from 20 mm thick steel plates. The cross sections of the lower steel anchor beam 34 and the upper steel anchor beam 52 are both in the shape of an I-shaped cross section.

[0067] The hanger pressing bolt 35 is rolled from a screw with a diameter of 20 mm.

[0068] The second suspension rope 36 is a steel wire rope with a diameter of 30 mm.

[0069] A first temperature control tube 37 is arranged on the side of the anchor beam back plate 27 away from the lower steel anchor beam 34, and a second temperature control tube 38 is arranged on the side facing the lower steel anchor beam 34, and the first temperature control tube 37 and the second temperature control tube 38 are connected to the heating equipment and the cooling equipment respectively; the first temperature control tube 37 and the second temperature control tube 38 are both steel pipes with a diameter of 60 mm.

[0070] A support plate 39 is installed on the lower steel anchor beam 34. The support plate 39 is rolled from 3mm thick steel plate and has a U-shaped cross-section. The support plate 39 is securely connected to the lower steel anchor beam 34 via plate fastening bolts 40, which are rolled from 20mm diameter screws. Screw holes are provided on the side walls of the support plate 39 for the plate fastening bolts 40. The plate fastening bolts 40 are threaded into these holes and located on both sides of the lower steel anchor beam 34. The plate fastening bolts 40 press against the two sides of the lower steel anchor beam 34, securing the support plate 39.

[0071] A column chute 41 and a chute top hanging plate 42 are provided on the upper surface of the support frame hanging plate 39 . The column chute 41 and the chute top hanging plate 42 are both rolled from a steel plate with a thickness of 10 mm. Among them, a channel with an inverted "T"-shaped cross section is provided on the column slide 41, which is connected to the column bottom support plate 44 and the support frame column 43; the top hanging plate 42 is made of rolled steel plate, with a "T"-shaped cross section, and is welded to the column slide 41; the column side hoop 45 is made of rolled steel plate, including two hoop plates with a semicircular cross section, and a hoop side hanging groove 51 connected to the oblique hanging bolt 46 and the transverse connecting bolt 47 is provided on the column side hoop 45; the oblique hanging bolt 46 is made of rolled screw, including a screw and a nut, the two screws are threadedly connected to the two sides of the nut, and the tightening directions of the screws on both sides of the nut are opposite; the two ends of the oblique hanging bolt 46 are respectively connected to the column side hoop 45 and the top hanging plate 42 through hooks; the transverse connecting bolt 47 includes two screws and nuts, the two screws are threadedly connected to the two sides of the nut, and the tightening directions of the screws on both sides of the nut are opposite; the two ends of the transverse connecting bolt 47 are respectively connected to the column side hoop 45 through hooks.

[0072] The support column 43 is made of a steel pipe with a diameter of 100 mm and the column bottom support plate 44 is made of a steel plate with a thickness of 10 mm.

[0073] A column side hoop 45 is sleeved on the support column 43 , and the column side hoop 45 is made of a steel plate with a thickness of 2 mm.

[0074] An oblique hanging bolt 46 is hung between the column side hoop 45 and the groove top hanging plate 42. The two oblique hanging bolts 46 are arranged crosswise. The oblique hanging bolt 46 includes a screw and a nut with a diameter of 20 mm. The two screws are threadedly connected to the two sides of the nut, and the tightening directions of the screws on both sides of the nut are opposite. The extension and contraction of the oblique hanging bolt 46 is achieved by rotating the middle nut; hooks connected to the hoop side hanging groove 51 and the groove top hanging plate 42 are set at both ends of the oblique hanging bolt 46; the hoop side hanging groove 51 is rolled from a steel plate with a thickness of 10 mm, and has an "L"-shaped cross section, and is welded to the column side hoop 45; a transverse connecting bolt 47 is set between the two mirror-opposite support columns 43. The transverse connecting bolt 47 includes a screw and a nut with a diameter of 20 mm. The two screws are threadedly connected to the two sides of the nut, and the tightening directions of the screws on both sides of the nut are opposite. The extension and contraction of the transverse connecting bolt 47 is achieved by rotating the middle nut.

[0075] A third positioning bolt 48 is provided on the upper part of the support column 43. The third positioning bolt 48 comprises a screw and a nut with a diameter of 60 mm. The two screws are threadedly connected to the two sides of the nut, and the tightening directions of the screws on both sides of the nut are opposite. By rotating the middle nut, the height of the bolt top connecting groove 50 at the upper end can be adjusted; the column top cap 49 and the bolt top connecting groove 50 are both rolled from a steel plate with a thickness of 10 mm.

[0076] A transverse positioning groove 53 is welded on each of the two anchor beam back plates 27, and a second positioning bolt 54 is provided on the transverse positioning groove 53. Each transverse positioning groove 53 includes two opposing side plates, and the second positioning bolt 54 is threadedly connected to the threaded holes on the two side plates. The side plates of the transverse positioning groove 53 are rolled from 10mm thick steel plates, and the second positioning bolt 54 is rolled from a 30mm diameter screw. When hoisting the upper steel anchor beam 52, the two ends of the upper steel anchor beam 52 are placed between the side plates on the two transverse positioning grooves 53. By rotating the second positioning bolt 54, the second positioning bolt 54 pushes against the side of the upper steel anchor beam 52, thereby achieving transverse adjustment of the upper steel anchor beam 52.

[0077] The built-in airbag 55 is formed by sewing a rubber sheet with a thickness of 2 mm and presenting a closed cavity. It is adhesively connected to the hanger support plate 32 and is inflated in the built-in airbag 55. The built-in airbag 55 expands after being inflated.

Claims

1. The construction method of in-situ assembly of large special-shaped steel anchor beams is characterized by: The construction steps include: 1) Construction preparation: tying and fixing the rigid frame (1) and the tower column reinforcement cage (2); pouring the tower column concrete (3), and pouring concrete inside the tower column concrete (3) to form the tower inner horizontal plate (4); 2) Installation of the anchor beam back plate installation platform: a platform support column (5) is provided on the upper surface of the tower inner horizontal plate (4), and a platform top plate (6) is laid on the upper end of the platform support column (5); two first sliding support plates (7) are provided on the platform top plate (6), and a sliding chute (8) with a "T"-shaped cross section is provided on the first sliding support plates (7); a fixed-length support column (9) is provided on the upper surface of each first sliding support plate (7); the sliding bottom plate (11) at the bottom end of the second sliding support plate (10) is slidably connected to the first sliding support plate (7); Connected to the push slide (8), and a sliding position control body (12) is set between the second sliding support plate (10) and the adjacent fixed-length support column (9); two transverse position control bodies (13) are set on the side of the second sliding support plate (10) facing the rigid frame (1), and one end of the transverse position control body (13) is connected to the guide pressure plate (14) through the angle adjustment shaft (15); a column top support beam (16), a lifting position control body (17) and a lifting platform plate (18) are sequentially set at the top of the fixed-length support column (9); 3) Installation of anchor beam back plate: a first side pressure bolt (23) is provided on one side of the lower surface of the plate top suspension beam (22), and a second side pressure bolt (24) and a third side pressure bolt (25) are provided on the other side, and the plate top suspension beam (22) is connected to the external suspension equipment via a first suspension rope (26); the top end of the anchor beam back plate (27) is connected to the plate top suspension beam (22) via a plate top connecting rope (28); the side surface of the plate top suspension beam (22) is connected to the first side pressure bolt (23), the second side pressure bolt (24) and the third side pressure bolt (25) The support roller (29) at the end is in contact; the inclination angle of the guide pressure plate (14) is controlled by the transverse position control body (13), and then the anchor beam back plate (27) is hoisted to the set position by an external hoisting device, and a positioning top pressure is applied to the anchor beam back plate (27) by the transverse position control body (13) so that it is close to the rigid frame (1); a back plate support bar (30) is provided on the outer side of the tower column concrete (3), and a back plate positioning bolt (31) is provided between the back plate support bar (30) and the anchor beam back plate (27); 4) Assembled positioning of the lower steel anchor beam: a vertical alignment body (19) and a hoisting guide groove (20) are provided on the platform top plate (6), and a first alignment bolt (21) is provided on the side wall of the hoisting guide groove (20); the hanger positioning groove (33) on the lower surface of the hanger support plate (32) is connected to the lower steel anchor beam (34) through the hanger pressing bolt (35); the hanger support plate (32) is connected to the external hoisting equipment through the second hoisting rope (36), the lower steel anchor beam (34) is hoisted into the hoisting guide groove (20) and placed on the upper end of the vertical alignment body (19), and the vertical position and the horizontal position of the lower steel anchor beam (34) are corrected by the vertical alignment body (19) and the first alignment bolt (21) respectively; 5) Welding and fixing the lower steel anchor beam: a first temperature control tube (37) is provided on the side of the anchor beam back plate (27) facing away from the lower steel anchor beam (34), and a second temperature control tube (38) is provided on the side of the anchor beam back plate (27) facing the lower steel anchor beam (34), and the first temperature control tube (37) and the second temperature control tube (38) are connected to a heating device and a cooling device respectively; first, the temperature of the side of the anchor beam back plate (27) facing away from the lower steel anchor beam (34) is increased by 200-300°C through the first temperature control tube (37), and then the lower steel anchor beam (34) and the anchor beam back plate (27) are welded firmly together by an external welding device, and during the welding construction, the second temperature control tube (38) is simultaneously used to reduce the temperature of the side of the anchor beam back plate (27) facing the lower steel anchor beam (34) by 50-100°C; 6) Installation of the inter-beam support platform: a support frame hanging plate (39) is provided on the lower steel anchor beam (34), and the support frame hanging plate (39) is firmly connected to the lower steel anchor beam (34) through the hanging plate fastening bolt (40); a column slide groove (41) and a groove top hanging plate (42) are provided on the upper surface of the support frame hanging plate (39); first, the column bottom support plates (44) at the bottom ends of the two support frame columns (43) are respectively inserted into the column slide groove (41), and slide to the two sides of the groove top hanging plate (42), and then the support frame is fixed on the support frame. A column side hoop (45) is sleeved on the column (43), and an oblique hanging bolt (46) is hung between the column side hoop (45) and the groove top hanging plate (42), and then a transverse connecting bolt (47) is set between the two mirror-opposite support columns (43); a third alignment bolt (48) is set on the upper part of the support column (43), the bottom end of the third alignment bolt (48) is connected to the support column (43) through the column top sleeve cap (49), and the top end of the third alignment bolt (48) is provided with a bolt top connecting groove (50); 7) Installation of the upper steel anchor beam (52): According to the spatial position of the upper steel anchor beam (52), transverse positioning grooves (53) are welded on the two anchor beam back plates (27), and a second alignment bolt (54) is set on the transverse positioning groove (53); first, the upper steel anchor beam (52) is hoisted onto the bolt top connection groove (50) using external lifting equipment, and the two ends of the upper steel anchor beam (52) are respectively located in the transverse positioning groove (53), and then the second alignment bolt (54) and the third alignment bolt (48) are used to control the transverse position and vertical position of the upper steel anchor beam (52), and then repeat step 5) to weld the upper steel anchor beam (52) to the anchor beam back plate (27) firmly.

2. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 2), the lateral position control body (13) and the lifting position control body (17) both use hydraulic jacks.

3. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 3), the first side pressure bolt (23), the second side pressure bolt (24) and the third side pressure bolt (25) are all hydraulic jacks, and one end of the first side pressure bolt (23), the second side pressure bolt (24) and the third side pressure bolt (25) is welded to the plate top suspension beam (22); the anchor beam back plate (27) is made of rolled steel plate; the plate top suspension beam (22) is made of rolled steel plate, and a hole for the plate top connecting cable (28) to pass through is preset on the plate top suspension beam (22), and the top surface of the plate top suspension beam (22) is firmly connected to the first suspension rope (26).

4. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 4), an inflatable built-in airbag (55) is provided on the lower surface of the hanger support plate (32), and the built-in airbag (55) is located in the hanging guide groove (20); when the lower steel anchor beam (34) is hung, the built-in airbag (55) is placed between the upper surface of the lower steel anchor beam (34) and the lower surface of the hanger support plate (32).

5. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 4), the cross section of the hanging guide groove (20) is U-shaped, and the first alignment bolt (21) is threadedly connected to the threaded hole on the side wall of the hanging guide groove (20); the vertical alignment body (19) adopts a hydraulic jack.

6. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 4), the hanger positioning groove (33) includes two mirror-image steel plates, and the hanger pressing bolt (35) is threadedly connected to the threaded holes on the two steel plates; when lifting the lower steel anchor beam (34), the lower steel anchor beam (34) is placed in the hanger positioning groove (33), and the hanger pressing bolt (35) is used to press the two sides of the lower steel anchor beam (34) tightly, thereby achieving the fixation of the lower steel anchor beam (34).

7. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 5), the first temperature control tube (37) and the second temperature control tube (38) are both made of rolled steel tubes.

8. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: In step 6), the support frame hanging plate (39) is made of rolled steel plate, and has a "U"-shaped cross section. The side wall is provided with screw holes connected to the hanging plate fastening bolts (40); the hanging plate fastening bolts (40) are threadedly connected to the screw holes and are located on both sides of the lower steel anchor beam (34). The hanging plate fastening bolts (40) are pressed against the two side surfaces of the lower steel anchor beam (34), thereby achieving the fixation of the support frame hanging plate (39).

9. The method for in-situ assembly of large special-shaped steel anchor beams according to claim 1 is characterized in that: The column chute (41) is formed by rolling steel plates, and a channel with an inverted "T"-shaped cross section connected to the column bottom support plate (44) is provided on the column chute (41); the channel top hanging plate (42) is formed by rolling steel plates, with a "T"-shaped cross section, and is welded to the column chute (41); the column side hoop (45) is provided with a hoop side hanging groove (51) connected to the oblique hanging bolt (46) and the transverse connecting bolt (47); the two ends of the oblique hanging bolt (46) are respectively connected to the column side hoop (45) and the channel top hanging plate (42) through hooks; the two ends of the transverse connecting bolt (47) are respectively connected to the column side hoop (45) through hooks.

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