CN115559525A - Formwork supporting system for irregular rotating structure and construction method thereof - Google Patents

Abstract

The invention discloses a template supporting system for an irregular rotating structure and a construction method thereof, belonging to the technical field of building construction, and comprising a plurality of concrete segments in a spiral ascending shape and a template group for pouring the concrete segments, wherein suspension supporting members are pre-embedded in the concrete segments, and the highest ends of the suspension supporting members upwards penetrate out of the concrete segments and extend into the concrete segments above the concrete segments; the template group is arranged on the side wall of the highest concrete segment, a connecting groove is formed in one side, close to the concrete segment, of the template group, hanging support pieces in the concrete segment extend into the template group through the connecting groove and are detachably connected with the template group, the same hanging support pieces are also arranged in the template group, and one end, far away from the concrete segment, of each hanging support piece penetrates out of the template group upwards; the adjacent hanging support pieces are detachably connected through the angle adjusting device, and the invention aims to solve the problem that a large number of temporary support systems are needed in the construction process of the traditional irregular rotary stair structure.

Description

A formwork support system for irregular rotating structures and its construction method

technical field

The invention belongs to the technical field of building construction, and in particular relates to a formwork support system for an irregular rotating structure and a construction method thereof.

Background technique

Reinforced concrete is widely used in building structures because of its good mechanical properties. However, with the continuous improvement of architectural aesthetics, the traditional concrete configuration can no longer meet people's needs. For this reason, a variety of special-shaped structures continue to appear, among which the irregular spiral staircase structure is very architecturally beautiful and is commonly used in architectural design. However, since the irregular spiral staircase structure is different from the traditional concrete structure, there are many problems in the construction process of the irregular spiral staircase structure.

Among them, due to the high height and thickness of the traditional irregular spiral staircase, in the traditional construction process, it is necessary to set up a large number of temporary support systems on the ground to support the formwork, and the erection of the temporary support system is affected by the construction environment. Difficult, hard-to-turnaround, and time-consuming problems.

Contents of the invention

In view of this, the present invention discloses a formwork support system for an irregular rotating structure and a construction method thereof, which aims to solve the problem that a large number of temporary support systems are required in the construction process of the traditional irregular rotating staircase structure.

To achieve the above object, the present invention provides the following technical solutions:

A formwork support system for irregular spiral stairs, including several spirally rising concrete sections and formwork groups for pouring concrete sections, the concrete sections are pre-embedded with suspension supports, and the suspension supports The highest ends of the parts all pass through the concrete segment upwards and extend into the upper concrete segment; the formwork group is arranged on the side wall of the highest end concrete segment, and a The connecting groove, the suspension support in the concrete section extends into the formwork group through the connection groove and is detachably connected with the formwork group, the same suspension support is also arranged in the formwork group, and the suspension support is far away from the concrete section One end of the segment passes upwards out of the template group; the adjacent suspension supports are detachably connected by an angle adjustment device.

Assemble the formwork group based on the formed structure, and install reinforcement cages and suspension supports in the formwork group to ensure that the highest end of the suspension support protrudes from the formwork group; pour concrete segments fixed on the formed structure, and wait for the concrete segments to be formed Finally, the formwork group is removed; when pouring the next section of concrete, set the formwork set on the suspension support protruding from the concrete section, and fix the formwork group with the suspension support; again in the formwork group Install the reinforcement cage and the suspension support, make sure that the end of the suspension support away from the concrete section passes through the formwork group upwards, and install an angle adjustment device between the suspension support in the formwork group and the suspension support in the concrete section to adjust the formwork The angle of the hanging supports within the group before pouring.

In the scheme, the formed concrete segments are used to bear the force in the construction and pouring stages, without the need to build a large number of vertical support systems, and at the same time, the suspension supports do not need to be disassembled, but act as transverse reinforcements for the concrete segments, saving energy. The purpose of time-saving and labor-saving is to strengthen the bearing capacity of the joints of adjacent concrete segments and prevent the joints of concrete segments from breaking; at the same time, there is no need to set up a vertical support system, and it can also not occupy the surrounding construction area and avoid hindering the surrounding areas. Normal construction.

Further, the angle adjustment device includes a base detachably connected to the highest end of the suspension support, a connection ball is fixed on the base, and a connection seat is detachably connected to the lowest end of the suspension support , the connection seat is provided with a connection hole for accommodating the connection ball, and a plurality of grooves facing the connection ball are provided on the peripheral side of the connection hole, and a clamping block for clamping the connection ball is slidably connected in the groove A return spring is provided between the clamping block and the groove; an adjustment device for driving the clamping block to slide is provided on the part where the suspension support extends out of the template group.

By forming a spherical hinge relationship between the connecting ball and the connecting seat, the angle between the suspension support in the formwork group and the suspension support in the concrete section can be adjusted to avoid the rotation of adjacent concrete sections in the irregular spiral staircase structure The angle is different from the angle of inclination and affects the load capacity of irregular spiral stairs.

Further, the adjustment device includes a cavity arranged inside the suspension support, a coaxial conduction rod is rotatably connected to the cavity, and a through groove communicating with the cavity is opened on the side wall of the suspension support. One end of the conduction rod is fixed with a handle protruding from the through groove, and the handle is located outside the template group; a through hole coaxial with the cavity is opened on the connecting seat, and the through hole is connected with the groove, and The internal thread of the through hole is connected with a rotating shaft, and there is a gap between the rotating shaft and the bottom of the through hole. One end of the rotating shaft is provided with a rectangular hole, and the other end of the rotating shaft is provided with an annular groove. The annular groove is slidingly connected with a number of evenly distributed Connecting plate, the end of the connecting plate extends into the groove and fits with the end of the clamping block, the end of the connecting plate facing the connecting ball is wedge-shaped; the other end of the conducting rod extends into the rectangular hole and Shape fit.

During the installation process of the template group and the suspension support, ensure that the conduction rod is inserted into the rectangular hole; when the angle adjustment is completed, turn the conduction rod counterclockwise through the handle, and the conduction rod will drive the shaft to rotate counterclockwise through the cooperation with the rectangular hole, so that the shaft faces The connecting ball moves in the direction of the connecting ball, and at the same time, the rotating shaft drives the connecting plate to move towards the clamping block, and the clamping block is squeezed through the connecting plate to force the clamping block to move in the direction of the connecting ball and clamp the connecting ball, locking the angle adjustment device; when necessary, adjust At this time, it is only necessary to turn the conductive rod clockwise through the handle, and the conductive rod drives the rotating shaft to rotate in the opposite direction. At this time, the rotating shaft drives the connecting plate to break away from the clamping block, so that the clamping block moves away from the connecting ball, and the fixing of the connecting ball is loosened. Thereby the angle adjusting device is loosened, and since the handle is arranged outside the formwork group, even if the concrete is not completely solidified during pouring, the angle of the hanging support in the formwork group can be adjusted from the outside, thereby improving the forming accuracy of the concrete segment.

Further, both sides of the connecting seat are provided with moving grooves parallel to the groove, and a moving seat is slidably connected in the moving groove, and the ball joint on the moving seat is provided with an auxiliary support rod, and the other end of the auxiliary support rod is connected to the base Spherical hinge connection; the side walls on both sides of the through hole are provided with chutes facing the moving seat, and positioning plates are slidably connected in the chute, and a number of positioning holes communicating with the chute are arranged on the moving trough. A number of positioning holes are opened on the moving seat, and a number of positioning pins protruding from the positioning holes and capable of being inserted into the positioning holes are provided on the positioning plate; the thickness of the positioning plate increases gradually along the direction close to the connecting ball. , and a return spring is arranged between the positioning plate and the chute.

When the connecting seat deflects, the auxiliary support rods on both sides deflect adaptively, and cooperate with the sliding of the moving seat to maintain the connection between the auxiliary supporting rod and the two ends of the connecting seat; then turn the conductive rod counterclockwise through the handle, and the conductive rod is driven by the cooperation with the rectangular hole The rotating shaft rotates counterclockwise, so that the rotating shaft moves toward the connecting ball, and when the rotating shaft moves, it squeezes the positioning plates on both sides, so that the limit pins on the positioning plates are inserted into the limit holes from the positioning holes, and the moving seat is locked, thereby fixing Auxiliary support rod, at this time, the auxiliary support rod acts as the connection strength between the support base and the connecting seat, that is, to strengthen the connection strength between the suspension support in the formwork group and the suspension support in the concrete segment, thereby strengthening the formwork group The load on the inner suspension supports.

Further, a number of diagonal braces are pre-embedded on the side wall at the highest end of the concrete segment, and the diagonal braces are fixedly connected to the bottom of the corresponding suspension support.

By setting the diagonal brace, the connection strength between the suspension support and the concrete segment can be strengthened, and the bending resistance of the suspension support can also be improved.

A construction method for a formwork support system for an irregular spiral staircase, comprising the following steps:

1), Pouring foundation: Assemble the formwork group based on the formed structure, and install steel cages and suspension supports in the formwork group to ensure that the highest end of the suspension support protrudes from the formwork group; pour concrete segments fixed on the formed structure , after the concrete segment is formed, remove the formwork group;

2), Step by step pouring: Set the formwork group on the suspension support protruding from the concrete segment, and fix the formwork group and the suspension support; install the reinforcement cage and the suspension support in the formwork group again to ensure that the The end of the suspension support away from the concrete section goes upwards out of the formwork group, and an angle adjustment device is installed between the suspension support in the formwork group and the suspension support in the concrete section to ensure that the conduction rod is inserted into the rectangular hole and deflects the formwork group The suspension support inside, the suspension support drives the connecting seat to deflect, so as to realize the angle adjustment of the hanging support in the formwork group; when the connecting seat deflects, the auxiliary support rods on both sides deflect adaptively, and cooperate with the sliding of the moving seat to maintain the auxiliary The connection between the support rod and the two ends of the connecting seat; then turn the conductive rod counterclockwise through the handle, and the conductive rod drives the rotating shaft to rotate counterclockwise through the cooperation with the rectangular hole, so that the rotating shaft moves towards the direction of the connecting ball, and when the rotating shaft moves, it squeezes the two sides. Positioning plate, so that the limit pin on the positioning plate is inserted into the limit hole from the positioning hole, and the moving seat is locked, thereby fixing the auxiliary support rod; at the same time, the rotating shaft squeezes the clamping block through the connecting plate, urging the clamping block to the direction of the connecting ball Move and clamp the connecting ball, lock the angle adjustment device; at the same time, do no bonding treatment on the angle adjustment device and the connection part of the adjacent suspension support; then pour the concrete segment, and remove the formwork group after the concrete segment is formed;

3) End of pouring: repeat step 2) until the concrete structure is poured;

4) Angle adjustment of suspension supports: during pouring, with the injection of concrete, the weight of the formwork group increases, which increases the load on the suspension supports of the concrete segment, which easily leads to bending deformation of the corresponding suspension supports, so that the formwork Group misalignment affects the pouring accuracy; at this time, turn the conductive rod by the handle, and use the cooperation between the conductive rod and the rectangular hole to drive the rotating shaft to rotate clockwise, so that the rotating shaft moves away from the connecting ball. At this time, the positioning plate loses the extrusion of the rotating shaft , the positioning plate resets under the action of the return spring, so that the limit pin on the positioning plate is separated from the limit hole, and the lock on the moving seat is released, so that the auxiliary support rod can be adjusted; at the same time, the rotating shaft drives the connecting plate to break away from the clamping block, so that The movement of the clamping block away from the connecting ball loosens the fixing of the connecting ball and thus the angle adjustment device, which makes it possible to adjust the angle of the hanging supports in the formwork group during pouring, thereby lifting the formwork group and causing the formwork group to reset .

Other advantages, objects and features of the present invention will be set forth in the following description, and to some extent will be obvious to those skilled in the art, or can be taught by the practice of the present invention to those skilled in the art. The objects and other advantages of the invention may be realized and attained by the following specification.

Description of drawings

In order to make the purpose, technical scheme and beneficial effect of the present invention clearer, the present invention provides the following drawings for illustration:

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is a transverse sectional view of an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of point A in FIG. 2 .

The marks in the drawings are as follows: concrete segment 1, formwork group 2, suspension support 3, base 4, connecting ball 5, clamping block 6, return spring 7, conduction rod 8, handle 9, rotating shaft 10, rectangular hole 11 , connecting plate 12, moving groove 13, moving seat 14, auxiliary support rod 15, positioning plate 16, positioning hole 17, limiting hole 18, positioning pin 19, connecting seat 20.

detailed description

As shown in Figure 1~3:

A formwork support system for an irregular spiral staircase, comprising several spirally rising concrete sections 1 and a formwork group 2 for pouring the concrete sections 1, and the concrete sections 1 are pre-embedded with suspension supports 3 , the highest ends of the suspension supports 3 all pass through the concrete segment 1 upwards and extend into the concrete segment 1 above; the template group 2 is arranged on the side wall of the highest end concrete segment 1, and the template group 2 There is a connection groove on the side close to the concrete segment 1, the suspension support 3 in the concrete segment 1 extends into the formwork group 2 through the connection groove and is detachably connected with the formwork group 2, and the formwork group 2 The same hanging support 3 is also arranged inside, and the end of the hanging support 3 away from the concrete segment 1 passes upwards out of the template group 2; the adjacent hanging supports 3 are detachably connected by an angle adjustment device.

Assemble the formwork group 2 based on the formed structure, and install the reinforcement cage and the suspension support 3 in the formwork group 2 to ensure that the highest end of the suspension support 3 protrudes from the formwork group 2; pour the concrete segment 1 fixed on the formed structure , after the concrete section 1 is formed, the formwork group 2 is removed; when the next concrete section 1 is poured, the formwork group 2 is set on the suspension support 3 protruding from the concrete section 1, and the formwork group 2 is fixed with the suspension support 3; install the reinforcement cage and the suspension support 3 in the formwork group 2 again, and ensure that the end of the suspension support 3 away from the concrete segment 1 passes through the formwork group 2 upwards and is inside the formwork group 2 An angle adjustment device is installed between the suspension support 3 and the suspension support 3 in the concrete section 1 to adjust the angle of the suspension support 3 in the template group 2, and then pouring.

In the scheme, the formed concrete segment 1 is used to bear the force in the construction and pouring stage, without the need to erect a large number of vertical support systems, and at the same time, the suspension support 3 does not need to be dismantled, but acts as the transverse reinforcement of the concrete segment 1 , to achieve the purpose of saving time and labor, and at the same time strengthen the bearing capacity of the joints of adjacent concrete sections 1, and prevent the joints of concrete sections 1 from breaking; Avoid obstructing normal construction in the surrounding area.

In this embodiment, the angle adjustment device includes a base 4, which is detachably connected to the end of the highest part of the suspension support 3 through bolts, and a connecting ball 5 is welded on the base 4. The end of the lowest part of the suspension support 3 is detachably connected with a connecting seat 20 by bolts. The connecting seat 20 is provided with a connecting hole for accommodating the connecting ball 5 . groove, the clamping block 6 for clamping the connection ball 5 is slidably connected in the groove, and a return spring 7 is arranged between the clamping block 6 and the groove; the suspension support 3 extends out of the template group 2 is provided with an adjustment device for driving the clamping block 6 to slide.

By forming a spherical hinge relationship between the connecting ball 5 and the connecting seat 20, the angle between the hanging support 3 in the formwork group 2 and the hanging support 3 in the concrete section 1 can be adjusted, so as to avoid the irregular spiral staircase structure. The rotation angle of the adjacent concrete segment 1 is different from the inclination angle, which affects the load capacity of the irregular spiral staircase.

In this embodiment, the adjustment device includes a cavity arranged inside the suspension support 3, and a coaxial conductive rod 8 is rotatably connected to the cavity, and the side wall of the suspension support 3 is provided with a cavity The through groove connected to the cavity, one end of the conductive rod 8 is fixed with a handle 9 protruding from the through groove, and the handle 9 is located outside the template group 2; the connecting seat 20 is provided with a through hole coaxial with the cavity, the Both the through hole and the groove are connected, and the internal thread of the through hole is connected with the rotating shaft 10, and a gap is reserved between the rotating shaft 10 and the bottom of the through hole. One end of the rotating shaft 10 is provided with a rectangular hole 11, and the other end of the rotating shaft 10 is provided with a There is an annular groove, and a number of evenly distributed connecting plates 12 are slidably connected in the annular groove, and the ends of the connecting plates 12 extend into the groove and fit with the ends of the clamping block 6, and the connecting plates 12 face the connection One end of the ball 5 is wedge-shaped; the other end of the conductive rod 8 extends into the rectangular hole 11 and adapts to the shape; the adjustment device and the end of the suspension support 3 are treated without bonding to prevent concrete filling and affect Regulator use.

During the installation process of the template group 2 and the suspension support 3, ensure that the conduction rod 8 is inserted into the rectangular hole 11; when the angle adjustment is completed, turn the conduction rod 8 counterclockwise through the handle 9, and the conduction rod 8 is driven through the cooperation with the rectangular hole 11 The rotating shaft 10 rotates counterclockwise, so that the rotating shaft 10 moves toward the direction of the connecting ball 5, and at the same time, the rotating shaft 10 drives the connecting plate 12 to move toward the clamping block 6, and squeezes the clamping block 6 through the connecting plate 12, so that the clamping block 6 moves toward the connecting ball 5 direction to move and clamp the connecting ball 5, and lock the angle adjustment device; when adjustment is required, only the handle 9 is needed to turn the conduction rod 8 clockwise, and the conduction rod 8 drives the rotating shaft 10 to rotate in reverse, and the rotating shaft 10 at this time drives the connection The plate 12 is separated from the clamping block 6, so that the clamping block 6 moves away from the connecting ball 5, and the fixing of the connecting ball 5 is loosened, thereby releasing the angle adjustment device. Since the handle 9 is arranged outside the formwork group 2, even during pouring , the concrete is not completely solidified, and the angle of the hanging support 3 in the template group 2 can also be adjusted from the outside, so as to improve the forming accuracy of the concrete segment 1 .

In this embodiment, both sides of the connecting seat 20 are provided with moving grooves 13 parallel to the groove, and the moving seats 14 are slidably connected in the moving grooves 13, and the ball joints on the moving seats 14 have auxiliary support rods 15, The other end of the auxiliary support rod 15 is connected with the base 4 ball joints; the side walls on both sides of the through hole are provided with chutes towards the moving seat 14, and a positioning plate 16 is slidably connected in the chute, and the moving The groove 13 is provided with some positioning holes 17 communicating with the chute, and the moving seat 14 is provided with some positioning holes 18, and the positioning plate 16 is provided with a number of positioning holes 17 which can be inserted into the positioning holes. The locating pin 19 of 18; The thickness of described locating plate 16 increases gradually along the direction close to connecting ball 5, and back-moving spring 7 (not shown) is fixed between locating plate 16 and the chute.

When the connecting seat 20 deflects, the auxiliary support rods 15 on both sides deflect adaptively, and cooperate with the sliding of the moving seat 14 to keep the connection between the auxiliary supporting rod 15 and the two ends of the connecting seat 20; 8. By cooperating with the rectangular hole 11, the rotating shaft 10 is driven to rotate counterclockwise, so that the rotating shaft 10 moves toward the direction of the connecting ball 5, and when the rotating shaft 10 moves, the positioning plates 16 on both sides are squeezed, so that the limit pin on the positioning plate 16 is moved by The positioning hole 17 is inserted into the limit hole 18, and the moving seat 14 is locked, thereby fixing the auxiliary support rod 15. At this time, the auxiliary support rod 15 plays the role of connecting strength between the support base 4 and the connecting seat 20, that is, strengthens the template group 2 The connection strength between the inner suspension support 3 and the inner suspension support 3 of the concrete segment 1, thereby strengthening the load of the formwork group 2 inner suspension support 3.

In this embodiment, several diagonal braces (not shown in the figure) are pre-embedded on the highest side wall of the concrete segment 1, and the diagonal braces are fixedly connected to the bottom of the corresponding suspension support 3.

By arranging the diagonal brace, the connection strength between the suspension support 3 and the concrete segment 1 is enhanced, and the bending resistance of the suspension support 3 can also be improved.

A construction method for a formwork support system for an irregular spiral staircase, comprising the following steps:

1) Pouring foundation: Assemble the formwork group 2 based on the formed structure, and install the reinforcement cage and the suspension support 3 in the formwork group 2 to ensure that the highest end of the suspension support 3 protrudes from the formwork group 2; the pouring is fixed on the formed structure Concrete section 1 above, after concrete section 1 is formed, formwork group 2 is removed;

2), step by step pouring: the formwork group 2 is set on the suspension support 3 protruding from the concrete segment 1, and the formwork group 2 and the suspension support 3 are fixed; Suspend the support 3, ensure that the end of the suspension support 3 away from the concrete section 1 passes through the formwork group 2 upwards, and adjust the installation angle between the suspension support 3 in the formwork group 2 and the suspension support 3 in the concrete section 1 device, to ensure that the conductive rod 8 is inserted into the rectangular hole 11, and by deflecting the suspension support 3 in the template group 2, the suspension support 3 drives the connecting seat 20 to deflect, thereby realizing the angle adjustment of the suspension support 3 in the template group 2; When the connecting seat 20 deflects, the auxiliary support rods 15 on both sides deflect adaptively, and cooperate with the sliding of the moving seat 14 to maintain the connection between the auxiliary supporting rod 15 and the two ends of the connecting seat 20; Cooperate with the rectangular hole 11 to drive the rotating shaft 10 to rotate counterclockwise, so that the rotating shaft 10 moves towards the direction of the connecting ball 5, and when the rotating shaft 10 moves, the positioning plates 16 on both sides are squeezed, so that the limit pins on the positioning plate 16 are positioned The hole 17 is inserted into the limit hole 18, and the moving seat 14 is locked, thereby fixing the auxiliary support rod 15; at the same time, the rotating shaft 10 presses the clamping block 6 through the connecting plate 12, so that the clamping block 6 is moved toward the connecting ball 5 and clamped Connecting the ball 5, locking the angle adjustment device; at the same time, the angle adjustment device and the connection part of the adjacent suspension support 3 are not bonded; then the concrete segment 1 is poured, and the formwork group 2 is removed after the concrete segment 1 is formed;

3) End of pouring: repeat step 2) until the concrete structure is poured;

4) Angle adjustment of the suspension support 3: during pouring, with the injection of concrete, the weight of the formwork group 2 increases, which increases the load on the suspension support 3 of the concrete segment 1, which easily causes the corresponding suspension support 3 to bend deformation, so that the template group 2 is dislocated, which affects the shape of the pouring structure; at this time, through the handle 9 to rotate the conduction rod 8, use the cooperation of the conduction rod 8 and the rectangular hole 11 to drive the rotating shaft 10 to rotate clockwise, so that the rotating shaft 10 moves away from the connecting ball 5 At this time, the positioning plate 16 loses the extrusion of the rotating shaft 10, and the positioning plate 16 resets under the action of the back-moving spring 7, so that the limit pin on the positioning plate 16 is separated from the limit hole 18, and the force on the moving seat 14 is released. Lock, so that the auxiliary support rod 15 can be adjusted; at the same time, the rotating shaft 10 drives the connecting plate 12 to break away from the clamping block 6, so that the clamping block 6 moves away from the connecting ball 5, and loosens the fixing of the connecting ball 5, thereby loosening the angle adjustment A device that makes it possible to adjust the angle of the hanging support 3 in the formwork group 2 during pouring, thereby lifting the formwork group 2 and causing the formwork group 2 to reset.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in terms of form and Various changes may be made in the details without departing from the scope of the invention defined by the claims.

Claims (6)

1. A formwork support system for an irregular rotating structure, comprising several helically rising concrete sections and formwork groups for pouring concrete sections, characterized in that: the concrete sections are pre-embedded with suspension supports The highest ends of the suspension supports all pass through the concrete segment upwards and extend into the concrete segment above; the formwork group is arranged on the side wall of the highest end concrete segment, and the formwork group is close to the concrete segment A connection groove is opened on one side of the concrete segment, and the suspension support in the concrete segment extends into the formwork group through the connection groove and is detachably connected with the formwork group. The same suspension support is also provided in the formwork group. The end of the suspension support away from the concrete section passes upwards out of the template group; the adjacent suspension supports are detachably connected by an angle adjustment device. 2. A formwork support system for irregular spiral stairs according to claim 1, wherein said angle adjustment device comprises a base detachably connected to the highest end of the suspension support, said base A connection ball is fixed on the bottom of the suspension support, and a connection seat is detachably connected to the end of the lowest part of the suspension support. The connection seat is provided with a connection hole for accommodating the connection ball. The grooves are slidingly connected with clamping blocks for clamping the connecting balls, and return springs are arranged between the clamping blocks and the grooves; There is an adjustment device for driving the sliding of the clamping block. 3. A formwork support system for irregular spiral stairs according to claim 2, characterized in that: the adjustment device includes a cavity arranged inside the suspension support, and a coaxial line is rotatably connected in the cavity The conductive rod, the side wall of the suspension support is provided with a through groove communicating with the cavity, and one end of the conductive rod is fixed with a handle extending out of the through groove, and the handle is located outside the template group; the connecting seat is provided with a The cavity is a through hole of the coaxial line, the through hole and the groove are connected, and the internal thread of the through hole is connected with the rotating shaft, and there is a gap reserved between the rotating shaft and the bottom of the through hole, and a rectangular hole is opened at one end of the rotating shaft. The other end of the rotating shaft is provided with an annular groove, and a number of evenly distributed connecting plates are slidably connected in the annular groove. One end facing the connecting ball is wedge-shaped; the other end of the conducting rod extends into the rectangular hole and adapts to the outer shape. 4. A formwork support system for irregular spiral stairs according to claim 3, characterized in that: both sides of the connecting seat are provided with moving grooves parallel to the groove, and there are slidingly connected sliding grooves in the moving grooves. The moving seat has an auxiliary support rod on the ball hinge, and the other end of the auxiliary support rod is connected to the base ball hinge; the side walls on both sides of the through hole are provided with chutes facing the moving seat. Slidingly connected with a positioning plate, the moving slot is provided with a number of positioning holes communicating with the chute; The positioning pin of the limiting hole; the thickness of the positioning plate gradually increases along the direction close to the connecting ball, and a return spring is arranged between the positioning plate and the chute. 5. A formwork support system for irregular spiral stairs according to claim 4, characterized in that: a number of diagonal braces are pre-embedded on the side wall at the highest end of the concrete section, and the diagonal braces are connected to the corresponding suspension The bottom of the support is fixedly connected. 6. the construction method of a kind of irregular spiral staircase formwork support system according to claim 5, is characterized in that, comprises the steps: 1), Pouring foundation: Assemble the formwork group based on the formed structure, and install steel cages and suspension supports in the formwork group to ensure that the highest end of the suspension support protrudes from the formwork group; pour concrete segments fixed on the formed structure , after the concrete segment is formed, remove the formwork group; 2), Step by step pouring: Set the formwork group on the suspension support protruding from the concrete segment, and fix the formwork group and the suspension support; install the reinforcement cage and the suspension support in the formwork group again to ensure that the The end of the suspension support away from the concrete section goes upwards out of the formwork group, and an angle adjustment device is installed between the suspension support in the formwork group and the suspension support in the concrete section to ensure that the conduction rod is inserted into the rectangular hole and deflects the formwork group The suspension support inside, the suspension support drives the connecting seat to deflect, so as to realize the angle adjustment of the hanging support in the formwork group; when the connecting seat deflects, the auxiliary support rods on both sides deflect adaptively, and cooperate with the sliding of the moving seat to maintain the auxiliary The connection between the support rod and the two ends of the connecting seat; then turn the conductive rod counterclockwise through the handle, and the conductive rod drives the rotating shaft to rotate counterclockwise through the cooperation with the rectangular hole, so that the rotating shaft moves towards the direction of the connecting ball, and when the rotating shaft moves, it squeezes the two sides. Positioning plate, so that the limit pin on the positioning plate is inserted into the limit hole from the positioning hole, and the moving seat is locked, thereby fixing the auxiliary support rod; at the same time, the rotating shaft squeezes the clamping block through the connecting plate, urging the clamping block to the direction of the connecting ball Move and clamp the connecting ball, lock the angle adjustment device; at the same time, do no bonding treatment on the angle adjustment device and the connection part of the adjacent suspension support; then pour the concrete segment, and remove the formwork group after the concrete segment is formed; 3) End of pouring: repeat step 2) until the concrete structure is poured; 4) Angle adjustment of suspension supports: during pouring, with the injection of concrete, the weight of the formwork group increases, which increases the load on the suspension supports of the concrete segment, which easily leads to bending deformation of the corresponding suspension supports, so that the formwork Group misalignment affects the pouring accuracy; at this time, turn the conductive rod by the handle, and use the cooperation between the conductive rod and the rectangular hole to drive the rotating shaft to rotate clockwise, so that the rotating shaft moves away from the connecting ball. At this time, the positioning plate loses the extrusion of the rotating shaft , the positioning plate resets under the action of the return spring, so that the limit pin on the positioning plate is separated from the limit hole, and the lock on the moving seat is released, so that the auxiliary support rod can be adjusted; at the same time, the rotating shaft drives the connecting plate to break away from the clamping block, so that The movement of the clamping block away from the connecting ball loosens the fixing of the connecting ball and thus the angle adjustment device, which makes it possible to adjust the angle of the hanging supports in the formwork group during pouring, thereby lifting the formwork group and causing the formwork group to reset .

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