Construction method for special-shaped rotating concrete structure

Abstract

The invention discloses a construction method for a special-shaped rotating concrete structure, belonging to the technical field of building construction, and comprising the following steps: 1), pouring a core column and prefabricating prestressed components in a factory; 2), constructing the special-shaped rotating structure in stages and installing a number of temporary support frames; 3), laying the bottom formwork of the formwork for the current construction stage along the core column and supporting the bottom formwork with the temporary support frames; 4), laying bottom steel bars on the bottom formwork; 5), hoisting 4 prefabricated prestressed components for the current construction stage and supporting the prefabricated prestressed components with the temporary support frames; 6), constructing steel bars on the bottom formwork and embedding embedded parts; 7), pouring the concrete thick shell of the current construction stage area; 8), pouring the wet joints between the prefabricated prestressed components; 9), performing the construction operation of the next stage; The purpose of the invention is to solve the problems of cumbersome construction process and high construction difficulty of the special-shaped rotating concrete structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a construction method for a special-shaped rotating concrete structure. Background Art

[0002] Reinforced concrete is widely used in building structures due to its good mechanical properties. However, with the continuous improvement of building aesthetics, traditional concrete configurations can no longer meet people's needs. For this reason, various special-shaped structures have emerged. Among them, the special-shaped rotating concrete structure has a more special structure, resulting in a more cumbersome and difficult construction process compared to the construction of other concrete structures. Therefore, a construction method for the special-shaped rotating concrete structure is needed to speed up the construction progress and reduce the construction difficulty. Summary of the Invention

[0003] In view of this, the present invention discloses a construction method for a special-shaped rotating concrete structure, aiming to solve the problems of cumbersome construction process and high construction difficulty of the special-shaped rotating concrete structure.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A construction method for a special-shaped rotating concrete structure, comprising the following steps:

[0006] 1), Pour the core column, and prefabricate prestressed components in the factory as prestressed components, and prepare the formwork for pouring the concrete thick shell;

[0007] 2), Construct the special-shaped rotating structure in stages, hoist the bottom temporary support steel platform below the current construction stage, construct the fastener-type steel pipe row frame on the secondary beam of the steel platform, and install a number of temporary support frames at the same time;

[0008] 3), Rotate and lay the bottom formwork in the formwork of the current stage along the core column, and support the bottom formwork with some temporary support frames;

[0009] 4), Lay the bottom steel bars on the bottom formwork;

[0010] 5), Hoist a number of prefabricated prestressed components in the current construction stage, and support the prefabricated prestressed components with the remaining part of the temporary support frames;

[0011] 6), Construct the concrete thick shell steel bar support, the middle layer and the surface layer steel bars on the bottom formwork, embed various embedded parts, and install the remaining formwork structures, and ensure that one end of the prefabricated prestressed component facing the core column extends into the formwork;

[0012] 7), Pour the concrete thick shell in the construction stage area of this stage;

[0013] 8), After the concrete strength reaches 100%, pour the wet joint between precast prestressed components;

[0014] 9), Carry out the construction operations of the next stage.

[0015] The beneficial effects of this solution are as follows: Based on the idea of combining in-situ casting and prefabrication, the in-situ casting part includes the core column, the concrete thick shell, and the joints between the outer precast prestressed beams; The core column is poured first, which serves as the core structure of the special-shaped rotating structure, and then the construction is carried out in stages. Compared with the in-situ casting construction method in the prior art, the entire construction process is more controllable; At the same time, the in-situ casting + prefabrication construction method can effectively reduce the construction process and shorten the construction time.

[0016] A temporary support frame in the construction method of a special-shaped rotating concrete structure includes a frame body detachably connected to a steel platform, and the height of the frame body is adjustable; A groove is provided at the top of the frame body, and a mounting seat is rotatably connected between both sides at one end of the groove. A rotating shaft parallel to the groove is rotatably connected to the mounting seat, and a torsion spring is provided at the connection. A power device for driving the rotating shaft to rotate is provided on the mounting seat. A jacking device is vertically provided on the frame body. The top end of the jacking device is hinged with a mounting sleeve slidably connected to the end of the rotating shaft. The center lines of rotation of the mounting sleeve and the mounting seat are perpendicular to the center line of rotation of the rotating shaft; A connecting platform is fixed on the rotating shaft, and the connecting platform is detachably connected to the corresponding precast prestressed component and the bottom mold. Ball joints are provided on both sides of the bottom of the connecting platform with inclined support rods; Vertical chutes are provided on the circumferential side of the frame body, and sliding seats are slidably connected in the chutes. A locking structure is provided on the sliding seats, and the sliding seats are ball-joint connected to the corresponding support rods.

[0017] In this solution, the precast prestressed component or the bottom mold is installed on the connecting platform. By adjusting the height of the frame body, the precast prestressed component or the bottom mold is pushed to move vertically, so that the precast prestressed component and the bottom mold reach the required height; At the same time, the rotating shaft is driven to rotate by the power device, and the rotating shaft drives the connecting platform to rotate, so as to adjust the inclination of the precast prestressed component and the bottom mold in the horizontal transverse direction; The jacking device drives one end of the rotating shaft to deflect along the center of rotation of the mounting seat by jacking the mounting sleeve, so as to adjust the inclination of the precast prestressed component and the bottom mold in the horizontal longitudinal direction; Thus, the inclination angle of the precast prestressed component and the bottom mold is accurately positioned, and the hoisting difficulty of the precast prestressed component and the bottom mold is reduced.

[0018] In addition, while the angle of the connecting platform is adjusted, the sliding seat is driven to slide in the chute by the support rod. After the sliding seat is fixed by the locking structure, the connecting platform is supported at multiple points by the support rod to prevent the connecting platform from tipping over in the inclined state.

[0019] Further, the connection platform includes a connection block and a support block fixed to the rotating shaft. A number of first adjustment grooves are provided at the top of the connection block, which are horizontally perpendicular to the rotating shaft. An adjustment seat is provided at the top of the connection block, which is detachably connected to the corresponding precast prestressed member and the bottom mold. A number of first adjustment segments are provided at the bottom of the adjustment seat, which are slidably connected to the corresponding first adjustment grooves. A second adjustment segment is provided at the bottom of the connection block. A number of second adjustment grooves are provided at the top of the support block, which are parallel to the rotating shaft. The second adjustment segment is slidably connected to the second adjustment groove. Driving structures are provided in both the first adjustment groove and the second adjustment groove, and the driving structures are used to drive the first adjustment segment and the second adjustment segment to move. The support rod is hinged to the support block.

[0020] After the precast prestressed member and the bottom mold are installed on the adjustment seat, the connection block is pushed to move horizontally and laterally, and the adjustment seat is pushed to move horizontally and longitudinally through the driving structure, so as to accurately adjust the horizontal position of the precast prestressed member and the bottom mold, and reduce the hoisting difficulty.

[0021] Further, the locking structure includes a number of connection grooves provided on both sides of the sliding seat. A limit pin is provided in each connection groove, and an elastic reset member is provided between the limit pin and the connection groove. A number of limit grooves are provided on both sides of the sliding groove, which cooperate with the limit pin. A cavity communicating the limit grooves on both sides is provided inside the sliding seat, and a locking block is slidably connected horizontally along its axial direction in the cavity.

[0022] When it is necessary to adjust the horizontal inclination of the precast prestressed member and the bottom mold, only need to move the locking block outwards, so that the locking block is disengaged from the limit pin. The limit pin retracts into the connection groove under the action of the elastic reset member. At this time, the sliding seat can move normally. When the horizontal inclination adjustment is completed, only need to move the locking block in the reverse direction. The locking block squeezes and pushes the limit pin to insert into the limit groove to complete the locking of the sliding seat, and the support rod forms a support for the connection platform.

[0023] Further, guide grooves are provided on both sides of the first adjustment groove and the second adjustment groove, and guide protrusions cooperating with the guide grooves are fixed on both sides of the first adjustment segment and the second adjustment segment.

[0024] Diagonal braces are provided between adjacent frames.

[0025] Other advantages, objectives and features of the present invention will be described in the subsequent description, and to some extent will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for description:

[0027] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of a temporary support frame in an embodiment of the present invention;

[0029] Figure 3 is a longitudinal sectional view of the temporary support frame in the direction parallel to the rotating shaft in an embodiment of the present invention;

[0030] Figure 4 is a longitudinal sectional view of the temporary support frame in the direction perpendicular to the rotating shaft in an embodiment of the present invention.

[0031] The reference signs in the drawings are as follows: core column 1, steel platform 2, formwork 3, precast prestressed member 4, frame body 5, mounting seat 6, rotating shaft 7, jacking device 8, mounting sleeve 9, support rod 10, support block 11, connecting block 12, adjusting seat 13, first adjusting section 14, second adjusting section 15, driving structure 16, limit pin 17, limit groove 18, locking block 19, guide groove 20, guide projection 21, sliding seat 22. Detailed implementation manners

[0032] As Figures 1 to 4 shown:

[0033] A construction method for a special-shaped rotating concrete structure includes the following steps:

[0034] 1), Pour the core column 1, and process the precast prestressed member 4 in the factory as a prestressed member, and prepare the formwork 3 for pouring the concrete thick shell;

[0035] 2), Construct the special-shaped rotating structure in stages, hoist the bottom temporary support steel platform 2 below the current construction stage, construct a fastener-style steel pipe row frame on the secondary beam of the steel platform 2, and install a number of temporary support frames at the same time;

[0036] 3), Rotate and lay the bottom formwork in the formwork 3 of the current stage along the core column 1, and support the bottom formwork with some temporary support frames;

[0037] 4), Lay the bottom steel bars on the bottom formwork;

[0038] 5), Hoist several precast prestressed members 4 of the current construction stage, and support the precast prestressed members 4 with the remaining temporary support frames;

[0039] 6), Construct the concrete thick shell steel bar support, middle layer and surface layer steel bars on the bottom formwork, embed various embedded parts, and install the remaining formwork structures, and ensure that one end of the precast prestressed member 4 facing the core column 1 extends into the formwork 3;

[0040] 7), Pour the concrete thick shell in this construction stage area;

[0041] 8), After the concrete strength reaches 100%, pour the wet joints between the precast prestressed components;

[0042] 9), Carry out the construction operations of the next stage.

[0043] The beneficial effects of this solution are as follows: Based on the idea of combining in-situ casting and prefabrication, the in-situ casting part includes the core column 1, the concrete thick shell, and the joints between the outer precast prestressed components. First, pour the core column 1 as the core structure of the special-shaped rotating structure, and then carry out construction in stages. Compared with the in-situ casting construction method in the prior art, the entire construction process is more controllable. At the same time, the in-situ casting + prefabrication construction method can effectively reduce the construction process and shorten the construction time.

[0044] A temporary support frame in the construction method of a special-shaped rotating concrete structure includes a frame body 5 detachably connected to the steel platform 2, and the height of the frame body 5 is adjustable; a groove is provided at the top of the frame body 5, and a mounting seat 6 is rotatably connected between both sides at one end of the groove. A rotating shaft 7 parallel to the groove is rotatably connected to the mounting seat 6, and a torsion spring is provided at the connection. A power device for driving the rotating shaft 7 to rotate is provided on the mounting seat 6. A jacking device 8 is vertically provided on the frame body 5, and the top end of the jacking device 8 is hinged to a mounting sleeve 9 slidably connected to the end of the rotating shaft 7. The rotation center lines of the mounting sleeve 9 and the mounting seat 6 are perpendicular to the rotation center line of the rotating shaft 7; a connection platform is fixed on the rotating shaft 7, and the connection platform is detachably connected to the corresponding precast prestressed component 4 and the bottom mold. Ball joints are provided on both sides of the bottom of the connection platform with inclined support rods 10; vertical chutes are provided on the periphery of the frame body 5, and sliding seats 22 are slidably connected in the chutes. A locking structure is provided on the sliding seats 22, and the sliding seats 22 are ball-jointed to the corresponding support rods 10.

[0045] In this solution, the precast prestressed component 4 or the bottom mold is installed on the connection platform. By adjusting the height of the frame body 5, the precast prestressed component 4 or the bottom mold is pushed to move vertically to make the precast prestressed component 4 and the bottom mold reach the required height. At the same time, the power device drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the connection platform to rotate, so as to adjust the inclination of the precast prestressed component 4 and the bottom mold in the horizontal transverse direction. The jacking device 8 jacks one end of the rotating shaft 7 through the mounting sleeve 9 to drive the rotating shaft 7 to deflect along the rotation center of the mounting seat 6, so as to adjust the inclination of the precast prestressed component 4 and the bottom mold in the horizontal longitudinal direction. Thus, accurately position the inclination angle of the precast prestressed component 4 and the bottom mold and reduce the hoisting difficulty of the precast prestressed component 4 and the bottom mold.

[0046] In addition, while adjusting the angle of the connection platform, the sliding seat 22 is driven by the support rod 10 to slide in the chute. After the sliding seat 22 is fixed by the locking structure, the support rod 10 forms multi-point support for the connection platform to prevent the connection platform from tipping over in the inclined state.

[0047] In this embodiment, the connection platform includes a connection block 12 and a support block 11 fixed to the rotating shaft 7. A plurality of first adjustment grooves perpendicular to the rotating shaft 7 are provided at the top of the connection block 12. An adjustment seat 13 detachably connected to the corresponding precast prestressed member 4 and the bottom mold is provided at the top of the connection block 12. A plurality of first adjustment segments 14 slidably connected to the corresponding first adjustment grooves are provided at the bottom of the adjustment seat 13. A second adjustment segment 15 is provided at the bottom of the connection block 12. A plurality of second adjustment grooves parallel to the rotating shaft 7 are provided at the top of the support block 11. The second adjustment segment 15 is slidably connected to the second adjustment groove. A driving structure 16 is provided in both the first adjustment groove and the second adjustment groove. The driving structure 16 is used to drive the first adjustment segment 14 and the second adjustment segment 15 to move. The support rod 10 is hinged to the support block 11.

[0048] After the precast prestressed member 4 and the bottom mold are installed on the adjustment seat 13, the driving structure 16 is used to push the connection block 12 to move horizontally and laterally, and push the adjustment seat 13 to move horizontally and longitudinally, so as to accurately adjust the horizontal position of the precast prestressed member 4 and the bottom mold and reduce the hoisting difficulty.

[0049] In this embodiment, the locking structure includes a plurality of connection grooves provided on both sides of the sliding seat 22. A limit pin 17 is provided in each connection groove, and an elastic reset member is provided between the limit pin 17 and the connection groove. A plurality of limit grooves 18 cooperating with the limit pin 17 are provided on both sides of the chute. A cavity communicating with the limit grooves 18 on both sides is provided inside the sliding seat 22. A locking block 19 is slidably connected horizontally along the axial direction in the cavity.

[0050] When it is necessary to adjust the horizontal inclination of the precast prestressed member 4 and the bottom mold, only need to move the locking block 19 outwards to make the locking block 19 disengage from the limit pin 17. The limit pin 17 retracts into the connection groove under the action of the elastic reset member. At this time, the sliding seat 22 can move normally. After the horizontal inclination adjustment is completed, only need to move the locking block 19 in the reverse direction. The locking block 19 squeezes and pushes the limit pin 17 to insert into the limit groove 18 to complete the locking of the sliding seat 22, and the support rod 10 forms support for the connection platform.

[0051] In this embodiment, guide grooves 20 are provided on both sides of the first adjustment groove and the second adjustment groove. Guide protrusions 21 that cooperate with the guide grooves 20 are fixed on both sides of the first adjustment section 14 and the second adjustment section 15. The cooperation between the guide protrusions 21 and the guide grooves 20 plays a guiding role when moving the first adjustment section 14 and the second adjustment section 15, and also prevents the first adjustment section 14 and the second adjustment section 15 from detaching from the first adjustment groove and the second adjustment groove.

[0052] In this embodiment, diagonal braces (conventional technical means for those skilled in the art, so not shown in the figure) are provided between adjacent frames 5. By providing the diagonal braces, the frames 5 are prevented from overturning.

[0053] 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 various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A construction method for a special-shaped rotating concrete structure, characterized in that, It includes the following steps: 1). Pour the core column, prefabricate prestressed components in the factory, and prepare the formwork for pouring the concrete thick shell; 2). Construct the special-shaped rotating structure in stages. Lift and install the bottom temporary support steel platform below the current construction stage. Construct the fastener-type steel pipe bent on the secondary beam of the steel platform, and install a number of temporary support frames at the same time. The temporary support frame includes a frame body detachably connected to the steel platform, and the height of the frame body is adjustable. A groove is formed at the top of the frame body. A mounting seat is rotatably connected between both sides at one end of the groove. A rotating shaft parallel to the groove is rotatably connected to the mounting seat, and a torsion spring is arranged at the connection. A power device for driving the rotation of the rotating shaft is arranged on the mounting seat. A jacking device is vertically arranged on the frame body. The top end of the jacking device is hinged with a mounting sleeve slidably connected to the end of the rotating shaft. The center lines of rotation of the mounting sleeve and the mounting seat are perpendicular to the center line of rotation of the rotating shaft. A connection platform is fixed on the rotating shaft. The connection platform is detachably connected to the corresponding prestressed component and the bottom formwork. Both sides at the bottom of the connection platform are ball-jointed with inclined support rods; vertical chutes are formed on the periphery of the frame body, and sliding seats are slidably connected in the chutes. A locking structure is arranged on the sliding seats, and the sliding seats are ball-jointed with the corresponding support rods 3). Rotate and lay the bottom formwork in the formwork of the current stage along the core column, and support the bottom formwork with some temporary support frames; 4). Lay the bottom steel bars on the bottom formwork; 5). Lift and install several prestressed components in the current construction stage, and support the prestressed components with the remaining temporary support frames; 6). Construct the steel bar support for the concrete thick shell, the middle layer and the surface layer steel bars on the bottom formwork, embed various embedded parts, and install the remaining formwork structures, and ensure that one end of the prestressed component facing the core column extends into the formwork; 7). Pour the concrete thick shell in the construction stage area; 8). After the concrete strength reaches 100%, pour the wet joint between the prestressed components; 9). Carry out the construction operation of the next stage.

2. The temporary support frame in the construction method of a special-shaped rotating concrete structure according to claim 1, characterized in that: The connection platform includes a connection block and a support block fixed to the rotating shaft. A number of first adjustment grooves perpendicular to the rotating shaft are formed at the top end of the connection block. An adjustment seat detachably connected to the corresponding prestressed component and the bottom formwork is arranged at the top of the connection block. A number of first adjustment segments slidably connected to the corresponding first adjustment grooves are arranged at the bottom of the adjustment seat; a second adjustment segment is arranged at the bottom of the connection block. A number of second adjustment grooves parallel to the rotating shaft are formed at the top end of the support block. The second adjustment segment is slidably connected to the second adjustment groove; driving structures are arranged in the first adjustment groove and the second adjustment groove, and the driving structures are used to drive the movement of the first adjustment segment and the second adjustment segment; the support rod is hinged to the support block.

3. The temporary support frame according to claim 2, characterized in that: The locking structure includes a plurality of connecting grooves formed on both sides of the sliding seat. A limit pin is arranged in each connecting groove, and an elastic reset member is arranged between the limit pin and the connecting groove. A plurality of limit grooves cooperating with the limit pins are formed on both sides of the sliding groove. A cavity communicating with the limit grooves on both sides is arranged inside the sliding seat, and a locking block is slidably connected horizontally along its axial direction in the cavity.

4. The temporary support frame according to claim 3, characterized in that: Guide grooves are formed on both sides of the first adjustment groove and the second adjustment groove, and guide protrusions cooperating with the guide grooves are fixed on both sides of the first adjustment section and the second adjustment section.

5. The temporary support frame according to claim 4, characterized in that: Diagonal braces are arranged between adjacent frames.

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