An adjustable support structure under a special-shaped cantilever structure and a construction method thereof

Abstract

The present invention discloses an adjustable support structure under a special-shaped cantilever structure and a construction method thereof, wherein: a Y-shaped steel beam is installed on the side of the structural side beam, and its cross section is "Y"-shaped, and the cross section size changes linearly along the length direction, and its top surface is provided with a "⊥"-shaped slide groove, and "]"-shaped card slots are provided on both sides of the top surface; the isolation protection steel plate is assembled into an isolation protection steel plate by horizontally splicing a plurality of patterned steel plates; an F-shaped connecting plate is fixed on the side of the structural side beam, and a "]"-shaped groove is provided on the F-shaped connecting plate, and the four sides of the patterned steel plate are respectively spliced ​​with the "]"-shaped groove of the F-shaped connecting plate, the card slot of the Y-shaped steel beam, and the adjacent patterned steel plate; the telescopic column includes a bottom section and a standard section; the adjustable horizontal connecting rod includes a transverse horizontal connecting rod and a longitudinal horizontal connecting rod, which constitute the supporting structure as a whole. The present invention provides a new support system for the situation where the formwork support under the external cantilever structure of a high-rise building has no bottom support, and has good support effect and high safety.

Description

Technical Field

[0001] The invention relates to the field of cantilever formwork support erection, and in particular to an adjustable support structure under a special-shaped cantilever structure and a construction method thereof. Background Art

[0002] With the development of building structure construction technology, a large number of architectural designs that are different from conventional concepts have emerged, and the structural shapes are diversified. In order to meet the construction requirements, high-rise public buildings often set up large cantilevered concrete structures protruding from the outside of the building, and a large number of special-shaped oblique components are used, such as sloping roofs and large cantilevered eaves. Some components extend for a long time, which brings many problems to the stability and safety of the structural system during construction. Its formwork support system has become a construction difficulty for the entire structure. The formwork support system is an important temporary load-bearing and force-transmitting structure in the construction process of concrete structures. Its reliability directly affects important issues such as construction safety, quality, and construction period. The adopted ground-type scaffolding formwork support system has thorny problems such as high cost, long working hours, high requirements on geological conditions, small cantilever span that can be supported, large amount of steel pipes, low rigidity of the frame itself, poor stability of the frame, cumbersome installation and disassembly, and ineffective guarantee of construction safety.

[0003] In view of the above situation, the present invention provides a support system which has a simple process, quick installation, safe operation, and can be applied to inclined cantilever structures, thereby saving a lot of labor costs compared to traditional support systems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an adjustable supporting structure under a special-shaped cantilever structure and a construction method thereof in view of the defects in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The present invention provides an adjustable supporting structure under a special-shaped cantilever structure, the supporting structure comprising: a Y-shaped steel beam, an isolation protection steel plate, a telescopic column, and an adjustable horizontal connecting rod; wherein:

[0007] The Y-shaped steel beam is installed on the side of the structural side beam. Its cross section is "Y" shaped, and the cross section size changes linearly along the length direction. Its top surface is provided with a "⊥" shaped slide groove, and both sides of the top surface are provided with "]" shaped card grooves; the head of the slide groove is provided with a square entry hole for the bottom of the telescopic column of the upper frame to enter;

[0008] The isolation protection steel plate is installed between adjacent Y-shaped steel beams, including a patterned steel plate, which is assembled into an isolation protection steel plate by horizontally splicing multiple patterned steel plates; an F-shaped connecting plate is fixed on the side of the structural side beam, and a "]"-shaped groove is arranged on the F-shaped connecting plate. The four sides of the patterned steel plate are spliced ​​with the "]"-shaped groove of the F-shaped connecting plate, the card groove of the Y-shaped steel beam, and the adjacent patterned steel plate respectively;

[0009] The telescopic column includes a bottom section and a standard section. The bottom section is installed in the square entry hole of the slide head. The standard section is provided with multiple sections, which are sequentially spliced ​​on the top of the bottom section.

[0010] The adjustable horizontal connecting rod comprises a transverse horizontal connecting rod and a longitudinal horizontal connecting rod, and the horizontal connecting rod and the longitudinal horizontal connecting rod are respectively connected to the telescopic column in the transverse horizontal direction and the longitudinal horizontal direction to form an integral supporting structure.

[0011] Furthermore, the top surface of the Y-shaped steel beam of the present invention is provided with double-ear plates at a certain interval, and the axle pins pass through the double-ear plates.

[0012] Furthermore, screw holes are symmetrically arranged on both sides of the web beam at the root of the Y-shaped steel beam of the present invention, and each of the screw holes is anchored in the embedded sleeve of the structural side beam by a screw rod and two nuts.

[0013] Furthermore, the patterned steel plate of the present invention has an angle steel welded on the back side of the steel plate to reduce the deflection generated during the stress process.

[0014] Furthermore, the patterned steel plates of the present invention are connected to adjacent patterned steel plates by H-shaped buckles, and the corners between the patterned steel plates are connected to each other by four-corner buckles and then tied to the double-ear plates of the adjacent Y-shaped steel beams by two tie rods in opposite directions with spirally adjustable lengths in the middle.

[0015] Furthermore, the four-corner buckle of the present invention is provided with a four-corner buckle double-ear plate, and the four-corner buckle axle pin passes through the four-corner buckle double-ear plate.

[0016] Furthermore, the pull rod of the present invention comprises a rod body, a screw rod and a screw hole are arranged in the middle of the rod body; connecting plates are arranged at both ends, and an axial hole is arranged on the connecting plates.

[0017] Furthermore, the upper and lower ends of the bottom section of the present invention are respectively provided with an upper bottom section four-hole wheel disk and a lower bottom section four-hole wheel disk; the standard section is provided with a standard section four-hole wheel disk at the upper end, which is used for inserting the horizontal connecting rod; the standard section screw arranged at the lower part of the standard section can be freely screwed into the upper screw hole of the bottom section for tightening and adjusting the height, and the middle part is the bottom section inner cavity and the standard section inner cavity; the bottom section screw arranged at the lower part of the bottom section can rotate freely in the screw hole, and the height of the telescopic column can be adjusted accordingly, and the base connected to the bottom section screw is installed in its slide groove through the entry hole on the top surface of the Y-shaped steel beam.

[0018] Furthermore, the transverse horizontal connecting rod of the present invention is a left-right symmetrical component, including an inner cavity with a screw hole for the free rotation of the transverse horizontal connecting rod screw, the length of the transverse horizontal connecting rod is adjusted so that the transverse horizontal connecting rod hook at the end can be just inserted into the four-hole wheel of the telescopic column, and a transverse horizontal connecting rod lock is provided to prevent unhooking; the structure of the longitudinal horizontal connecting rod is consistent with the transverse horizontal connecting rod.

[0019] The present invention provides a construction method of an adjustable supporting structure under a special-shaped cantilever structure, comprising the following steps:

[0020] Step 1: Complete all parts of the adjustable support structure under the special-shaped cantilever structure according to the drawing requirements;

[0021] Step 2: Position and lay out the lines before pouring concrete on the current floor slab according to the construction layout diagram, and pre-embed the threaded sleeves at the corresponding positions required for installing the Y-shaped steel beam and the F-shaped connecting plate;

[0022] Step 3: After the floor slab reaches the concrete strength, start installing the Y-shaped steel beam and F-shaped connecting plate; align the screw holes on the steel beam with the pre-buried threaded sleeves on the floor slab, screw in the screws, and put two nuts on the upper part. Similarly, install the F-shaped connecting plate next to the steel beam, and make the "]"-shaped groove of the F-shaped connecting plate and the slot of the Y-shaped steel beam in the same plane in the horizontal direction;

[0023] Step 4: Install the first checkered steel plate first, insert the two adjacent right-angled sides of the checkered steel plate into the "]"-shaped groove of the F-shaped connecting plate and the groove of the Y-shaped steel beam, then install the next checkered steel plate and use the H-shaped buckle to buckle it with the side of the previous checkered steel plate, and use the four-corner buckle to buckle the corners, and use the four-corner buckle double-ear plate on the four-corner buckle to tie two tie rods and pull them to the double-ear plate of the Y-shaped steel beam. Similarly, complete the installation of all subsequent checkered steel plates according to the existing slots;

[0024] Step 5: The base of the telescopic column bottom section enters through the entry hole on the top surface of the Y-shaped steel beam and slides along the slideway to the required position. The remaining columns slide to the corresponding positions in the same way.

[0025] Step 6: Install a horizontal connecting rod between each row of bottom sections. First, buckle one end on the four-hole wheel disc of the bottom section. Rotate the screw in the middle of the horizontal connecting rod to adjust the length of the rod so that the locking end can be just buckled on the four-hole wheel disc of another bottom section. A horizontal connecting rod is set between the remaining four-hole wheel discs of each adjacent bottom section.

[0026] Step 7: After each bottom section of a support system is installed, a longitudinal horizontal connecting rod is installed between the bottom section of the previous support system, and the longitudinal horizontal connecting rod is fully installed;

[0027] Step 8: Then install the standard section and the corresponding horizontal connecting rods and vertical connecting rods upwards;

[0028] Step 9: Multiple support systems are installed layer by layer at the same time;

[0029] Step 10, adjust the standard section screws of the top section or the uppermost two sections of the telescopic column to the height calculated in advance and then stop rising;

[0030] Step 11: After installing several support systems, check whether the positions of each component are correct and whether each bolt is tightened. After confirming that they are correct, continue to install the next position;

[0031] Step 12: During the pouring of concrete for the external cantilever slab, displacement monitoring of the support system is performed;

[0032] Step 13. After the dismantling conditions are met, dismantle the support system layer by layer in the order of "longitudinal horizontal connecting rod → transverse horizontal connecting rod → telescopic column standard section → longitudinal horizontal connecting rod → transverse horizontal connecting rod → telescopic column bottom section → internal isolation protection steel plate → Y-shaped steel beam".

[0033] The beneficial effects produced by the present invention are:

[0034] (1) Large-scale steel plates are used as hard protection at the bottom of the frame, which are stable in force, require less material, can be used repeatedly, and have a low loss rate.

[0035] (2) The Y-shaped steel beams directly anchored to the structural edge beams can save space for other indoor construction.

[0036] (2) The spacing between the columns of the support system can be adjusted at any time by adjusting the horizontal connecting rod according to the load transmitted from the upper part, and the column base and the load-bearing steel beam are tightly connected to ensure that they are not easy to slip.

[0037] (3) The telescopic column can be adjusted to the corresponding height instantly without replacing the material, and as the main supporting component of the support system, it avoids the shortcomings of traditional fasteners and steel pipe overlap, which is time-consuming and may loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0039] Figure 1 is a Y-shaped steel beam according to an embodiment of the present invention;

[0040] Figure 2 The isolation and protection steel plate of the embodiment of the present invention;

[0041] Figure 3 is a patterned steel plate according to an embodiment of the present invention;

[0042] Figure 4 It is an H-shaped buckle according to an embodiment of the present invention;

[0043] Figure 5 It is a four-corner buckle according to an embodiment of the present invention;

[0044] Figure 6 is a pull rod according to an embodiment of the present invention;

[0045] Figure 7is a telescopic column according to an embodiment of the present invention;

[0046] Figure 8 is an adjustable horizontal connecting rod according to an embodiment of the present invention;

[0047] Fig. 9 is an overall diagram of an embodiment of the present invention;

[0048] In the figure: 1. Y-shaped steel beam; 2. Isolation and protection steel plate; 3. Telescopic column; 4. Adjustable horizontal connecting rod;

[0049] 21. Patterned steel plate; 211. Angle steel; 22. H-shaped buckle; 23. Four-corner buckle; 231. Four-corner buckle double-ear plate; 2311. Four-corner buckle shaft pin; 24. Pull rod; 241. Rod body; 2411. Screw rod; 2412. Screw hole; 242. Connecting plate; 2421. Shaft hole; 25. F-shaped connecting plate; 251. Bolt;

[0050] 31. Bottom section; 311. Four-hole wheel disc of upper bottom section; 312. Inner cavity of bottom section; 313. Screw rod of bottom section; 314. Four-hole wheel disc of lower bottom section; 315. Base; 32. Standard section; 321. Four-hole wheel disc of standard section; 322. Inner cavity of standard section; 323. Screw rod of standard section;

[0051] 41. Transverse horizontal connecting rod; 411. Transverse horizontal connecting rod screw; 412. Transverse horizontal connecting rod hook; 413. Transverse horizontal connecting rod lock; 42. Longitudinal horizontal connecting rod; 421. Longitudinal horizontal connecting rod screw; 422. Longitudinal horizontal connecting rod hook; 423. Longitudinal horizontal connecting rod lock. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] like Figure 1-Figure 8 As shown, the adjustable supporting structure under the special-shaped cantilever structure of the embodiment of the present invention includes:

[0054] (1) Y-shaped steel beam;

[0055] The main body is a Y-shaped variable-section beam with a "Y"-shaped cross-section. The cross-section size changes linearly along the length direction. The top surface is a "⊥"-shaped slide groove 11, and the two sides are "]"-shaped card grooves 12. The square entry hole at the head of the slide groove 11 is for the base of the upper frame column to enter. The top surface of the beam is provided with a double ear plate 13 according to the spacing requirements. Screw holes 14 are symmetrically arranged on both sides of the web beam at the root of the beam, and each is anchored in the embedded sleeve of the structural side beam by a screw rod 15 and two nuts 151.

[0056] It should be noted that

[0057] (2) Isolation protection steel plate; the “⊥”-shaped slide groove 11 is specifically a T-shaped structure, arranged along the Y-shaped variable cross-section beam; the “]”-shaped slot 12 is specifically a groove with protrusions on both sides and a depression in the middle.

[0058] The horizontal steel plate is a patterned steel plate 21, and an angle steel 211 is welded on the back of the steel plate to reduce the deflection generated during the force application process. Multiple patterned steel plates 21 are horizontally spliced ​​and assembled into an isolation protection platform. The side of the structural side beam is fixed with an F-type connecting plate 25 by bolts 251. The bolts are set through pre-buried sleeves. One side of a patterned steel plate 21 is stuck in the "]"-shaped groove on it, and the adjacent side is stuck in the slot 12 of the Y-shaped steel beam 1. The other two sides are connected to the adjacent patterned steel plates 21 with H-shaped buckles 22. The corners between the patterned steel plates 21 are connected to each other with four-corner buckles 23, and then pulled to the double ear plates 13 of the adjacent Y-shaped variable-section beam 1 through two tie rods 24 in opposite directions and with spirally adjustable lengths in the middle.

[0059] (3) Telescopic columns;

[0060] The telescopic column is divided into a bottom section 31 and a standard section 32. The upper and lower ends of the bottom section 31 are respectively provided with an upper bottom section four-hole wheel disc 311 and a lower bottom section four-hole wheel disc 314. The standard section 32 is provided with a standard section four-hole wheel disc 321 at the upper end, which is used for inserting the horizontal connecting rod. The standard section screw 323 at the lower part of the standard section 32 is freely screwed into the upper screw hole of the bottom section 31 for fastening and height adjustment. The middle part of the column is the bottom section inner cavity 312 and the standard section inner cavity 322. The bottom section screw 313 at the lower part of the bottom section 31 can rotate freely in the screw hole, and the height of the column is adjusted accordingly. The base 315 connected to the bottom section screw 313 is installed in its slide groove through the entry hole on the top surface of the Y-shaped variable-section beam 1.

[0061] (4) Adjustable horizontal connecting rod

[0062] The adjustable horizontal connecting rod is divided into a transverse horizontal connecting rod 41 and a longitudinal horizontal connecting rod 42. The horizontal connecting rod is a bilaterally symmetrical component, and the inner cavity has a screw hole for the horizontal connecting rod screw to rotate freely. The length of the horizontal connecting rod is adjusted so that the horizontal connecting rod hook at the end can be just inserted into the four-hole wheel of the telescopic column, and a horizontal connecting rod lock is provided to prevent unhooking.

[0063] like Fig. 9 As shown, the construction method of the adjustable supporting structure under the special-shaped cantilever structure of the embodiment of the present invention comprises the following steps:

[0064] Step 1: Complete all parts of the adjustable support structure under the special-shaped cantilever structure according to the drawing requirements;

[0065] Step 2: Position and lay out the lines before pouring concrete on the current floor slab according to the construction layout diagram, and pre-embed the threaded sleeves at the corresponding positions required for installing the Y-shaped steel beam 1 and the F-shaped connecting plate 25;

[0066] Step 3, after the floor slab reaches the concrete strength, start to install the Y-shaped steel beam 1 and the F-shaped connecting plate 25; align the screw hole 14 on the steel beam with the threaded sleeve pre-buried on the floor slab, screw in the screw 15, put two nuts 151 on the upper part, and similarly install the F-shaped connecting plate 25 next to the steel beam, and make the "]"-shaped groove of the F-shaped connecting plate 25 and the clamping groove 12 of the Y-shaped steel beam 1 in the same plane in the horizontal direction;

[0067] Step 4, first install the first patterned steel plate 21, insert the two adjacent right-angled sides of the patterned steel plate 21 into the "]"-shaped groove of the F-shaped connecting plate 25 and the slot 12 of the Y-shaped steel beam 1, then install the next patterned steel plate 21 and use the H-shaped buckle 22 to buckle it with the side of the previous patterned steel plate 21, and use the four-corner buckle 23 to buckle it at the corner, and use the four-corner buckle double-ear plate 231 on the four-corner buckle 23 to pull two tie rods 24 and pull them onto the double-ear plate 13 of the Y-shaped steel beam 1. Similarly, complete the installation of all subsequent patterned steel plates 21 according to the existing slots;

[0068] Step 5: The base 315 of the telescopic column bottom section 31 enters through the entry hole on the top surface of the Y-shaped steel beam 1 and slides to the desired position along the slideway 11. The remaining columns slide to the corresponding positions in the same manner.

[0069] Step 6: Install a transverse horizontal connecting rod 41 between each row of bottom sections 31, first buckle one end on the four-hole wheel disc 315 of the bottom section, rotate the screw in the middle of the horizontal connecting rod to adjust the rod length so that the buckle end can be just buckled on the four-hole wheel disc of another bottom section, and set a transverse horizontal connecting rod 41 between the remaining four-hole wheel discs of each adjacent bottom section;

[0070] Step 7, after each bottom section of a support system is installed, a longitudinal horizontal connecting rod 42 is installed between the bottom section of the previous support system, and the longitudinal horizontal connecting rod 42 is fully installed;

[0071] Step 8: Then install the standard section 32 and the corresponding horizontal connecting rods 41 and vertical connecting rods 42 upwards;

[0072] Step 9: Multiple support systems are installed layer by layer at the same time;

[0073] Step 10, adjust the standard section screw rod 323 of the top section or the uppermost two sections of the telescopic column to stop rising after adjusting to the height calculated in advance;

[0074] Step 11: After installing several support systems, check whether the positions of each component are correct and whether each bolt is tightened. After confirming that they are correct, continue to install the next position;

[0075] Step 12: During the pouring of concrete for the external cantilever slab, displacement monitoring of the support system is performed;

[0076] Step 13, after the dismantling conditions are met, the support system is dismantled layer by layer in the order of “longitudinal horizontal connecting rod 42 → transverse horizontal connecting rod 41 → telescopic column standard section 32 → longitudinal horizontal connecting rod 42 → transverse horizontal connecting rod 41 → telescopic column bottom section 31 → inner isolation protection steel plate 2 → Y-shaped steel beam 1”.

[0077] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An adjustable supporting structure under a special-shaped cantilever structure, characterized in that: The supporting structure comprises: a Y-shaped steel beam (1), an isolation protection steel plate (2), a telescopic column (3), and an adjustable horizontal connecting rod (4); wherein: The Y-shaped steel beam (1) is installed on the side of the structural side beam, and its cross section is "Y"-shaped, and the cross section size changes linearly along the length direction. The top surface is provided with a "⊥"-shaped slide groove (11), and the two sides of the top surface are provided with "]"-shaped card grooves (12); the head of the slide groove (11) is provided with a square entry hole for the bottom of the telescopic column (3) of the upper frame to enter; The isolation protection steel plate (2) is installed between adjacent Y-shaped steel beams (1), and comprises a patterned steel plate (21). The isolation protection steel plate (2) is assembled by horizontally splicing a plurality of patterned steel plates (21); an F-shaped connecting plate (25) is fixed to the side of the structural side beam, and a "]"-shaped groove is provided on the F-shaped connecting plate (25); the four sides of the patterned steel plate (21) are respectively spliced ​​with the "]"-shaped groove of the F-shaped connecting plate (25), the clamping groove (12) of the Y-shaped steel beam (1), and the adjacent patterned steel plate (21); The telescopic column (3) comprises a bottom section (31) and a standard section (32), wherein the bottom section (31) is installed in a square insertion hole at the head of the slide groove (11), and the standard section (32) is provided with a plurality of sections which are sequentially spliced ​​above the bottom section (31); The adjustable horizontal connecting rod (4) comprises a transverse horizontal connecting rod (41) and a longitudinal horizontal connecting rod (42), and the transverse horizontal connecting rod (41) and the longitudinal horizontal connecting rod (42) are respectively connected to the telescopic column (3) in the transverse horizontal direction and the longitudinal horizontal direction to form an integral supporting structure; A double-ear plate (13) is arranged at a certain interval on the top surface of the Y-shaped steel beam (1), and an axle pin (131) passes through the double-ear plate (13); The patterned steel plates (21) are connected to adjacent patterned steel plates (21) by H-shaped buckles (22), and the corners between the patterned steel plates (21) are connected to each other by four-corner buckles (23) and then tied to the double ear plates (13) of the adjacent Y-shaped steel beams (1) by two tie rods (24) in opposite directions and with adjustable lengths in the middle. The four-corner buckle (23) is provided with a four-corner buckle double-ear plate (231), and the four-corner buckle double-ear plate (231) passes through the four-corner buckle shaft pin (2311).

2. The adjustable supporting structure under the special-shaped cantilever structure according to claim 1, characterized in that: Screw holes (14) are symmetrically arranged on both sides of the web beam at the root of the Y-shaped steel beam (1), and are each anchored in a pre-buried sleeve of the structural side beam by a screw rod (15) and two nuts (151).

3. The adjustable supporting structure under the special-shaped cantilever structure according to claim 1, characterized in that: An angle steel (211) is welded to the back side of the patterned steel plate (21) to reduce the deflection generated during the stress process.

4. The adjustable supporting structure under the special-shaped cantilever structure according to claim 1, characterized in that: The pull rod (24) comprises a rod body (241), a screw rod (2411) and a screw hole (2412) are arranged in the middle of the rod body (241); connecting plates (242) are arranged at both ends, and an axis hole (2421) is arranged on the connecting plate (242).

5. The adjustable supporting structure under the special-shaped cantilever structure according to claim 1, characterized in that: An upper bottom section four-hole wheel disc (311) and a lower bottom section four-hole wheel disc (314) are respectively arranged at the upper and lower ends of the bottom section (31); a standard section four-hole wheel disc (321) is arranged at the upper end of the standard section (32) for inserting the adjustable horizontal connecting rod (4); a standard section screw rod (323) arranged at the lower part of the standard section (32) is freely screwed into the upper screw hole of the bottom section (31) for fastening and adjusting the height; the middle part is a bottom section inner cavity (312) and a standard section inner cavity (322); the bottom section screw rod (313) arranged at the lower part of the bottom section (31) can be freely rotated in the screw hole to adjust the height of the telescopic column (3); a base (315) connected to the bottom section screw rod (313) is installed in the slide groove of the Y-shaped steel beam (1) through the insertion hole on the top surface.

6. The adjustable supporting structure under the special-shaped cantilever structure according to claim 5, characterized in that: The transverse horizontal connecting rod (41) is a bilaterally symmetrical component, including an inner cavity with a screw hole for the transverse horizontal connecting rod screw (411) to rotate freely, and the length of the transverse horizontal connecting rod (41) is adjusted so that the transverse horizontal connecting rod hook (412) at the end can be just inserted into the four-hole wheel of the telescopic column (3), and a transverse horizontal connecting rod lock (413) is provided to prevent the hook from being unhooked; the structure of the longitudinal horizontal connecting rod (42) is consistent with that of the transverse horizontal connecting rod (41).

7. A construction method for an adjustable support structure under a special-shaped cantilever structure, using the structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Complete all parts of the adjustable support structure under the special-shaped cantilever structure according to the drawing requirements; Step 2: Position and lay out the lines before pouring concrete on the current floor slab according to the construction layout diagram, and pre-embed the threaded sleeves at the corresponding positions required for installing the Y-shaped steel beam (1) and the F-shaped connecting plate (25); Step 3: After the floor slab reaches the concrete strength, start installing the Y-shaped steel beam (1) and the F-shaped connecting plate (25); align the screw hole (14) on the steel beam with the threaded sleeve pre-buried on the floor slab, screw in the screw rod (15), and then put two nuts (151) on the upper part. Similarly, install the F-shaped connecting plate (25) next to the steel beam, and make the "]"-shaped groove of the F-shaped connecting plate (25) and the clamping groove (12) of the Y-shaped steel beam (1) in the same plane in the horizontal direction; Step 4, first install the first patterned steel plate (21), insert the two adjacent right-angled sides of the patterned steel plate (21) into the "]"-shaped groove of the F-shaped connecting plate (25) and the slot (12) of the Y-shaped steel beam (1), then install the next patterned steel plate (21) and use the H-shaped buckle (22) to buckle it with the side of the previous patterned steel plate (21), and buckle it with the corner using the four-corner buckle (23), and pull two tie rods (24) through the four-corner buckle double ear plates (231) on the four-corner buckle (23) and pull them onto the double ear plates (13) of the Y-shaped steel beam (1), and similarly complete the subsequent installation of all patterned steel plates (21) according to the existing slots; Step 5: The base (315) of the telescopic column bottom section (31) enters through the entry hole on the top surface of the Y-shaped steel beam (1), slides along the slide groove (11) to the desired position, and the remaining columns slide to the corresponding positions in the same manner; Step 6, install a transverse horizontal connecting rod (41) between each row of bottom sections (31), first buckle one end on the four-hole wheel disc of the bottom section, rotate the screw in the middle of the horizontal connecting rod to adjust the length of the rod so that the locking end can be just buckled on the four-hole wheel disc of another bottom section, and set a transverse horizontal connecting rod (41) between the remaining four-hole wheel discs of each adjacent bottom section; Step 7, after each bottom section of a support system is installed, a longitudinal horizontal connecting rod (42) is installed between the bottom section of the previous support system, and the longitudinal horizontal connecting rod (42) is fully installed; Step 8: Then, upwardly install the standard section (32) and the corresponding horizontal connecting rods (41) and the vertical connecting rods (42); Step 9: Multiple support systems are installed layer by layer at the same time; Step 10, adjusting the standard section screw rods (323) of the top section or the two uppermost sections of the telescopic column to stop rising after adjusting to a height calculated in advance; Step 11: After installing several support systems, check whether the positions of each component are correct and whether each bolt is tightened. After confirming that they are correct, continue to install the next position; Step 12: During the pouring of concrete for the external cantilever slab, displacement monitoring of the support system is performed; Step 13: After the dismantling conditions are met, the support system is dismantled layer by layer in the order of "longitudinal horizontal connecting rod (42) → transverse horizontal connecting rod (41) → telescopic column standard section (32) → longitudinal horizontal connecting rod (42) → transverse horizontal connecting rod (41) → telescopic column bottom section (31) → inner isolation protection steel plate (2) → Y-shaped steel beam (1)".

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