A multi-surface synchronous construction bent roof steel structure sectional hoisting support device

Abstract

The application discloses a kind of segmented hoisting support devices of bending top steel structure of multi-operation surface synchronous construction, including scaffold, support support and hoisting module;The scaffold is set up into ladder shape, forms several scaffold platforms;The support support is fixed in the scaffold platform, as the support and temporary fixed assembly jig of bending top steel structure, the support support is composed of base plate and support round tube;The hoisting module is divided into several hoisting units and is arranged outside the scaffold.The present application forms multiple isometric operation platforms by ladder-shaped scaffold at a time, realizes dome partition, synchronous assembly, synchronous hoisting, is conducive to the installation construction of ball joint support, improves construction efficiency, ensures installation accuracy, and shortens construction period by more than 30%;Support support uses base plate and support round tube modular combination, base plate increases contact area, node slip amount is small, assembly precision is high, better meet the construction demand of bending top steel structure segmented hoisting operation.

Description

Technical Field

[0001] This invention relates to the field of dome construction technology, and in particular to a segmented hoisting support device for curved roof steel structures for simultaneous construction on multiple work surfaces. Background Technology

[0002] An irregularly shaped dome refers to a relatively irregular building roof structure, often used as an upper shelter structure for building lobbies. To ensure good lighting, the construction of an irregularly shaped dome typically includes two important components: the dome support frame and the dome glass. The dome support frame provides the basic structural support, while the dome glass provides the main lighting and waterproofing functions. Based on the design of the structural elements, an irregularly shaped dome is assembled from several interconnected spherical support blocks into an arc-shaped dome. The construction process involves first constructing the dome support frame, and then lifting and transporting the dome glass pieces one by one to their corresponding positions on the dome support frame for installation. Designing the segmented hoisting support device for the curved roof steel structure is a crucial aspect of the construction of this type of irregularly shaped dome. A reasonable system structure design facilitates the installation of the interconnected spherical support frame, improves construction efficiency, and ensures installation accuracy. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a segmented hoisting support device for curved steel structures under simultaneous construction on multiple work surfaces. The device includes scaffolding, support brackets, and hoisting modules. The scaffolding is erected in a stepped shape, forming several scaffolding platforms. The support brackets are installed and fixed on the scaffolding platforms, serving as support for the curved steel structure and as temporary fixed assembly frames. The support brackets support the longitudinal frame of the curved steel structure and consist of a base steel plate and supporting round pipes. The hoisting modules are divided into several hoisting units located on the outside of the scaffolding for simultaneous hoisting of the curved steel structure under simultaneous construction on multiple work surfaces.

[0004] As a further explanation of the present invention, the base steel plate is made of plate steel profile to increase the supporting contact area with the scaffolding, and the supporting round tube is made of round steel tube.

[0005] Furthermore, the base steel plate is welded to the supporting round tube, and an adjustable top support structure is provided at the top of the supporting round tube.

[0006] Furthermore, a reinforcement structure is provided at the connection between the support bracket and the scaffolding for reinforcement.

[0007] Furthermore, the adjustable top support structure includes a top support sleeve and a jack, wherein the top support sleeve is slidably disposed on the top of the supporting circular tube by means of the jack.

[0008] Furthermore, the adjustable top support structure also includes a force indication mechanism.

[0009] Furthermore, the force indication mechanism is a linkage assembly, including a vertical rod that extends and retracts along the vertical direction of the top support sleeve and a horizontal rod that extends and retracts along the lateral direction of the top support sleeve.

[0010] Furthermore, the scaffolding includes exterior scaffolding and full-span scaffolding.

[0011] Furthermore, the facade scaffolding adopts a ground-supported double-row coupler-type steel pipe scaffolding, with a concrete foundation.

[0012] Furthermore, the full-span scaffolding is erected using disc-lock steel pipe scaffolding, with vertical diagonal bracing at intervals, continuous horizontal scissor bracing, and safety netting.

[0013] The beneficial effects of this invention are:

[0014] This invention uses a stepped scaffolding system to form multiple equal-height working platforms in one go, enabling dome zoning, synchronous assembly, and synchronous hoisting. This facilitates the installation and construction of the ball joint scaffolding, improves construction efficiency, ensures installation accuracy, and shortens the construction period by more than 30%. The support frame adopts a modular combination of base steel plate and support round tube. The base steel plate increases the contact area, which can distribute the radial horizontal thrust of the dome to the scaffolding upright nodes. The node slippage is small, the assembly accuracy is high, and it better meets the construction needs of segmented hoisting operations of curved roof steel structures. Attached Figure Description

[0015] Figure 1 This invention provides an embodiment of a scaffolding and support bracket setup. Figure 1 ;

[0016] Figure 2 This invention provides an embodiment of a scaffolding and support bracket setup. Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the support structure according to an embodiment of the present invention;

[0018] Figure 4 This is a structural diagram of the linkage assembly according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the installation sequence of the dome horizontal frame unit according to an embodiment of the present invention;

[0020] Figure 6 This diagram illustrates the location of the crane in the hoisting module and the corresponding work area in an embodiment of the present invention.

[0021] Attached reference numerals: 1. Scaffolding; 2. Supporting bracket; 3. Base steel plate; 4. Supporting round pipe; 5. Long arm crane; 6. Top support sliding sleeve; 7. Jack; 8. Vertical rod; 9. Horizontal rod; 10. Bent top steel structure; 10. Longitudinal frame; 101. Horizontal frame unit; 102. Detailed Implementation

[0022] Example:

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] As attached Figure 1-6 As shown in this embodiment, a segmented hoisting support device for curved steel structures under simultaneous construction on multiple work surfaces includes a scaffolding 1, a support bracket 2, and a hoisting module. The scaffolding 1 is erected in a stepped shape, forming several scaffolding platforms. The support bracket 2 is installed and fixed on the scaffolding platforms, serving as support for the curved steel structure 10 and a temporary fixed assembly frame. The support bracket 2 supports the longitudinal frame 101 of the curved steel structure 10 and consists of a base steel plate 3 and a support circular tube 4. The hoisting module is divided into several hoisting units located on the outside of the scaffolding 1 for simultaneous hoisting of the curved steel structure 10 for simultaneous construction on multiple work surfaces. In practical applications, based on the structural design of the curved steel structure 10, the longitudinal frame 101 of the curved steel structure 10 is first installed on the support bracket 2, and then the transverse frame units 102 of the curved steel structure 10 are simultaneously constructed on multiple work surfaces using the hoisting module, thereby improving construction efficiency. The hoisting module can be hoisted using a long-arm crane 5. In actual application, the construction position of the long-arm crane 5 can be adjusted according to the actual situation of the hoisting unit. As shown in the attached figure, in the engineering application of this embodiment, the construction site of the curved steel structure 10 is divided into 4 construction areas. The long-arm crane 5 covers part of the curved steel structure 10 within the corresponding construction area to complete the corresponding hoisting construction.

[0026] The segmented hoisting support device for curved roof steel structures in this embodiment is actually used for the assembly and welding of irregular dome spherical supports. Multiple equal-height working platforms are formed at once through the stepped scaffolding 1, enabling segmented, synchronous assembly and hoisting of the dome. This facilitates the installation of the spherical supports, improves construction efficiency, ensures installation accuracy, and shortens the construction period by more than 30%. The support scaffolding 2 adopts a modular combination of "base steel plate 3 + support round tube 4". By increasing the contact area between the base steel plate 3 and the scaffolding 1, the radial horizontal thrust of the dome can be distributed to the upright nodes of the scaffolding 1, resulting in minimal node slippage and high assembly accuracy, better meeting the construction requirements of the 10-segment hoisting operation of the curved roof steel structure. The assembly and welding construction of the irregular dome spherical supports in the actual project is described below, and the specific construction process is as follows:

[0027] 1) First, calculate the coordinates and height difference of each welded ball according to the coordinates of the ball nodes in the drawings. Measure the central cross lines of the irregular dome ball joint support and the scaffolding platform 1 respectively. Place steel pipe positioning rings (i.e. steel pipe jigs) on the central cross lines so that the two coincide.

[0028] 2) After marking the control point positions, first position and fix the support bracket 2 of the center ball, and then install the center ball into place. Then, according to the measurements, install the corresponding 5 bottom support balls into place.

[0029] 3) Installation of longitudinal frame 101: In this embodiment, the curved roof steel structure 10 includes five longitudinal frames 101. One of these frames is selected, and a jig is set up on the ground according to its corresponding position. The nine welded spheres (excluding the center sphere and support spheres) are placed in their positions, and then the members between the spheres are welded to the ground according to their positions. See Appendix. Figure 5 As shown, the welded spheres and rods of these five longitudinal frames 101 are identical in size and position, and can therefore be assembled on the ground in one go using the same jig. Each longitudinal frame 101 consists of nine welded spheres and ten rods, with a total weight of 420 kg. After being assembled on the ground, it is then lifted into place using a crane. During lifting, care must be taken to adjust the position and length of the lifting straps so that the components can be aligned with the center sphere and support sphere respectively. After being lifted into place, the rods at both ends and the corresponding spheres must be temporarily fixed, and temporary supports must be added under the middle sphere. After one longitudinal frame 101 is installed, the remaining four longitudinal frames 101 are installed in the same way. After all five longitudinal frames 101 are installed, the coordinates of each control point are checked to ensure their accuracy. When each point is within the control range, the temporary fixing positions of the cell and the center sphere and support sphere are welded to prepare for the next installation step.

[0030] 4) Installation of the transverse frame unit 102: Within the five construction sections of the curved steel structure 10, one section will be selected for the construction of the transverse frame unit 102. Similar to the construction of the longitudinal frame 101, the transverse frame unit 102 will also be assembled on the ground first, and then hoisted using a crane. Within each construction section, excluding the support balls and the welded balls already installed at the top, there are a total of 8 layers of transverse frame units 102. The number of welded balls decreases from 8 to 1 layer by layer, and the number of rods connected to the welded balls also decreases from 9 to 2 layers by layer. The heaviest transverse frame unit 102 weighs 400 kg. Three slings are used for hoisting the transverse frame unit 102. A 2T hand-operated hoist can be attached to the middle sling to adjust the levelness of the transverse frame unit 102. After each layer of transverse frame unit 102 is hoisted into place, the coordinate data are immediately measured. When the error is within the control range, the diagonal web members between each layer of transverse frame unit 102 and the next layer are also assembled into place.

[0031] 5) Installation of other construction sections: After the installation of the first construction section of the space frame is completed, the other construction sections are installed using the same method. The installation sequence can be 1, 3, 5, 2, 4 to minimize deformation errors. After all construction sections are installed, the entire space frame is measured and checked again, and finally, it is reinforced by overall welding.

[0032] 6) Unloading: After the balls and rods in the 5 areas have been installed and welded, remove the temporary supports.

[0033] As a further explanation of the present invention, the base steel plate 3 is a 300*300*8mm plate steel, which increases the contact area between the support bracket 2 and the scaffold support 1, and can disperse the radial horizontal thrust of the dome to the scaffold upright nodes, reducing settlement; the support round tube is a round steel pipe with specifications of Φ89*4 and Φ165*4; the length and specifications are adjusted according to the ball specifications, and an adjustable top support structure can be set at the top of the support round tube, which can steplessly fine adjust the elevation of the dome node at high altitude with an adjustment accuracy of ±1mm, solving the drawbacks of the traditional pad method of "repeated replacement and large cumulative error".

[0034] In this embodiment, the base steel plate 3 and the supporting round tube 4 are connected by welding.

[0035] In this embodiment, a reinforcement structure is provided at the connection between the support bracket 2 and the scaffolding bracket 1 for reinforcement. As described above, the overall assembly of the dome spherical scaffolding is carried out on a full-span scaffolding platform. Due to the characteristics of the spherical space frame, the scaffolding needs to be erected in a stepped shape to meet installation requirements. To prevent deformation and subsidence at the support locations, reinforcement is carried out at the support locations before construction. After the supports are completed, their elevation is recorded. After the space frame is assembled, its subsidence is observed to check the stress on each support and adjust any unstressed supports to ensure that each support is under stress.

[0036] In this embodiment, the adjustable top support structure includes a top support sliding sleeve 6 and a jack 7. The top support sliding sleeve 6 is slidably mounted on the top of the supporting circular tube 4 by being driven by the jack 7. The extension height of the top support sliding sleeve 6 is adjusted by the jack 7, thereby adjusting the support height of the ball joint bracket. During unloading, the jack 7 is controlled by the control system to synchronously descend in 20mm increments until the support point of the grid structure is 10mm away from the top position, thus achieving the unloading operation. In practical applications, a scale can be used to ensure that the descent value of each step during unloading is within a controllable range, and preparation work for unloading scale should be done. The specific method can be referred to as follows:

[0037] A. Immediately place a ruler near the temporary support point, align it with the scale, and fix it in place. It can only be removed after the unloading is complete; otherwise, it is not allowed to be removed midway.

[0038] B. Directly release the length value of each unloading step along the falling direction on jack 7 as the control standard for each unloading step;

[0039] C. Erect steel pipes on the sides adjacent to the jack 7, and mark the length value of each unloading step on the steel pipes as the control standard for each unloading step.

[0040] As described above, to facilitate the inspection of the stress condition of the support bracket 2, as shown in the attached drawings, a stress indicator mechanism is provided on the top support sleeve 6 in this embodiment to provide a visual indication of the stress condition of the support bracket 2. Specifically, the stress indicator mechanism in this embodiment is a linkage assembly, including a vertical rod 8 that extends and retracts along the vertical direction of the top support sleeve 6 and a horizontal rod 9 that extends and retracts along the lateral direction of the top support sleeve 6. When the top support sleeve 6 is under stress, the vertical rod 8 moves downward under pressure, causing the horizontal rod 9 to extend laterally, indicating that the top support sleeve 6 and the supported object are under stress in the current state. Conversely, the vertical rod 8 and the horizontal rod 9 are reset under the action of a reset component (e.g., a spring), and the horizontal rod 9 retracts, indicating that the support bracket 2 and the supported object are not under stress and support adjustment is required to ensure that the support is under stress.

[0041] In this embodiment, the scaffolding 1 includes exterior scaffolding and full-span scaffolding.

[0042] In this embodiment, the exterior scaffolding adopts a ground-supported double-row coupler-type steel pipe scaffolding, with a concrete pad foundation. The exterior scaffolding uses a ground-supported double-row coupler-type steel pipe scaffolding, with a 120mm thick C30 concrete pad foundation. The longitudinal spacing of the uprights is ≤1.2m, the transverse spacing is 0.9m, the horizontal bar step distance is 1.8m, the inner pole is 0.2m away from the building structural surface, and the erection height is from the original ground floor to the roof floor +1.2m. Wall ties are set at two spans per step, the outer side of the scaffolding is fully covered with dense safety netting, and toe boards are set at each step.

[0043] In this embodiment, during the curtain wall installation phase, the original main structure scaffolding was dismantled and modified, and the distance from the wall was adjusted to 0.35m to facilitate the installation of the curtain wall keel. The longitudinal and transverse spacing and step distance remained unchanged, and safety protection was provided by laying steel mesh and installing safety nets at the gaps from the wall.

[0044] In this embodiment, the full-span scaffolding is erected using disc-lock steel pipe scaffolding. Vertical diagonal bracing is installed at intervals, and continuous horizontal scissor bracing and safety netting are provided. Specifically, the maximum erection height is 20m, with a longitudinal and transverse spacing of 1.2m × 1.2m, a step distance of 1m, and vertical diagonal bracing every two spans. Continuous horizontal scissor bracing is installed at 4m and 12m positions, and safety netting is laid to improve the safety of construction operations.

[0045] The above description only illustrates preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. In short, all variations made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A segmented hoisting support device for curved roof steel structures under simultaneous construction on multiple work surfaces, characterized in that: The system includes scaffolding, support brackets, and hoisting modules. The scaffolding is erected in a stepped shape, forming several scaffolding platforms. The support brackets are installed and fixed on the scaffolding platforms, serving as supports for the curved steel structure and temporary fixed assembly frames. The support brackets are used to support the longitudinal skeleton of the curved steel structure and consist of a base steel plate and supporting round pipes. The hoisting modules are divided into several hoisting units located on the outside of the scaffolding for simultaneous hoisting of the curved steel structure for simultaneous construction on multiple work surfaces. The base steel plate is made of plate steel profile to increase the support contact area with the scaffolding, and the support round tube is made of round steel tube; The base steel plate is welded to the supporting round tube, and an adjustable top support structure is provided at the top of the supporting round tube; the adjustable top support structure includes a top support sleeve and a jack, and the top support sleeve is slidably disposed on the top of the supporting round tube by the jack; the adjustable top support structure also includes a force indication mechanism. The force indication mechanism is a linkage assembly, including a vertical rod that extends and retracts along the vertical direction of the top support sleeve and a horizontal rod that extends and retracts along the lateral direction of the top support sleeve.

2. The segmented hoisting support device for curved roof steel structure under simultaneous construction of multiple work surfaces as described in claim 1, characterized in that... The connection between the support bracket and the scaffolding is reinforced with a reinforcing structure.

3. The segmented hoisting support device for curved roof steel structure under simultaneous construction of multiple working faces as described in claim 1, characterized in that... The scaffolding includes exterior scaffolding and full-span scaffolding.

4. The segmented hoisting support device for curved roof steel structure under simultaneous construction of multiple working faces as described in claim 3, characterized in that... The exterior scaffolding is a ground-supported double-row coupler-type steel pipe scaffolding, with a concrete foundation.

5. The segmented hoisting support device for curved roof steel structure under simultaneous construction of multiple working faces as described in claim 3, characterized in that... The full-span scaffolding is erected using disc-lock steel pipe scaffolding, with vertical diagonal bracing at intervals, continuous horizontal scissor bracing, and safety netting.

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