Space special-shaped arch rib segment hoisting posture adjusting method and system

Abstract

The invention provides a space special-shaped arch rib segment hoisting posture adjusting method and system, and relates to the technical field of hoisting, the space special-shaped arch rib segment hoisting posture adjusting method comprises the steps that an arch bridge comprises multiple segments of arch ribs, each arch rib comprises a main arch and an auxiliary arch, the main arches and the auxiliary arches are connected through inclined rods, and the inclined rods are connected with the main arches and the auxiliary arches; the main arch and the auxiliary arch are provided with a plurality of hoisting assemblies in the length direction of the main arch and the auxiliary arch, each hoisting assembly comprises a hoisting hook, a steel wire rope and a shackle, the steel wire rope comprises a first steel wire rope and a second steel wire rope, the hoisting hook is connected with the main arch through the first steel wire rope, and the shackle is connected with the second steel wire rope through the second steel wire rope. The lifting hooks and the auxiliary arch are connected through the second steel wire ropes and the shackles, and the lifting hooks of the multiple sets of lifting assemblies are connected through pulley block connecting ropes and pulley blocks correspondingly. The safety of hoisting and posture adjustment can be improved, the welding assembly requirement of the arch rib on the support is met, and site construction is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of hoisting technology, and in particular to a method and system for adjusting the hoisting posture of a spatial special-shaped arch rib segment. Background Art

[0002] The arch is a very important component of the arch bridge structure. It not only bears the weight of the bridge, but also plays a key role in the beauty and stability of the bridge.

[0003] The component structures of the arch need to be assembled after hoisting, and the posture of the component structures of the arch need to be adjusted before assembly. In the related technology, the process of adjusting the posture of the component structures of the arch before assembly is relatively complicated, which is not conducive to on-site construction and the safety needs to be improved. Summary of the invention

[0004] The problem to be solved by the present invention is that the process of adjusting the posture of the component structure of the arch before assembly is relatively complicated, which is not conducive to on-site construction and the safety needs to be improved.

[0005] To solve the above problems, in a first aspect, the present invention provides a method for adjusting the hoisting posture of a spatial special-shaped arch rib segment, which is used for arranging the arch ribs of an arch bridge before they are fixed. The arch bridge comprises a plurality of arch ribs, wherein the arch ribs comprise a main arch and a secondary arch, wherein the main arch and the secondary arch are connected by an inclined rod, and along the length direction of the main arch and the secondary arch, the main arch and the secondary arch are provided with a plurality of lifting components, wherein the lifting components comprise a hook, a wire rope and a shackle, wherein the wire rope comprises a first wire rope and a second wire rope, wherein the hook and the main arch are connected by the first wire rope, and the hook and the secondary arch are connected by the second wire rope and the shackle, wherein the hooks of the plurality of lifting components are connected by a pulley block connecting rope and a pulley block respectively, and the shackle is arranged close to the secondary arch. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment comprises:

[0006] Determining the center of gravity of the arch rib by means of the three-dimensional model of the arch bridge, and arranging the suspension points on the main arch and the secondary arch based on the center of gravity, wherein the three-dimensional model of the arch bridge includes three-dimensional models of multiple sections of the arch rib;

[0007] The position of the hook is determined according to the shortest length of the wire rope, the position of the center of gravity and the position of the hanging point, the center of the hook and the center of gravity are in the same vertical plane, and the pulley block and the center of gravity are on the same plumb line;

[0008] The length of the first steel wire rope is determined according to the distance between the hook and the hanging point on the main arch, and the number of the shackles is determined according to the distance between the hook and the hanging point on the secondary arch and the length of the second steel wire rope, the first steel wire rope is used to guide the installation of the first steel wire rope, and the length of the second steel wire rope is used to guide the installation of the second steel wire rope, and the number of the shackles is used to guide the installation of the shackles;

[0009] After changing the number of the shackles, the lateral posture of the arch rib along the direction perpendicular to the length is detected, so that the lateral posture of the arch rib conforms to the standard lateral posture of the arch rib in the three-dimensional model;

[0010] The vertical height difference of the hooks in the plurality of groups of the hoisting components is adjusted so that the longitudinal posture of the arch rib conforms to the standard longitudinal posture of the arch rib in the three-dimensional model.

[0011] Optionally, arranging the suspension points of the main arch and the secondary arch based on the center of gravity includes:

[0012] For the plurality of groups of the hoisting components, based on the positions of the plurality of hoisting ears evenly distributed on the arch ribs, at least one of the hoisting ears on the main arch and the secondary arch located on both sides of the center of gravity in the length direction is selected as the hoisting point.

[0013] Optionally, after determining the position of the hook according to the shortest length of the steel wire rope, the position of the center of gravity and the position of the hanging point, the method further comprises:

[0014] The stress condition of the steel wire rope between the hook and each of the hanging points is simulated, and the specifications of the first steel wire rope and the second steel wire rope are determined according to the stress condition.

[0015] Optionally, determining the position of the hook according to the shortest length of the wire rope, the position of the center of gravity and the position of the hanging point, wherein the center of the hook and the center of gravity are in the same vertical plane comprises:

[0016] Determine the vertical plane passing through the center of gravity along the length direction;

[0017] Taking the lifting point on the main arch close to the secondary arch as the starting point, a steel wire rope with the shortest length is simulated to be installed upward along the first vertical direction, and its end point intersects with the vertical plane where the center of gravity is located, and the end point is used as the center of the hook.

[0018] Optionally, determining the number of the shackles according to the distance between the hook and the lifting point on the secondary arch and the length of the second steel wire rope comprises:

[0019] Acquire the distance between the hook and the hanging point on the secondary arch, and determine the length difference between the distance between the hook and the hanging point on the secondary arch and the determined length of the second steel wire rope;

[0020] The number of the shackles corresponding to each section of the second steel wire rope is determined according to the length difference and the individual lengths of the shackles in the series state.

[0021] Optionally, detecting the lateral posture of the arch rib along the direction perpendicular to the length by changing the number of the shackles so that the lateral posture of the arch rib conforms to the standard lateral posture of the arch rib in the three-dimensional model comprises:

[0022] Acquire in real time a first height difference between the bottom of the main arch and the bottom of the auxiliary arch in a second vertical direction;

[0023] If the height difference and the difference between the height difference between the bottom of the main arch and the bottom of the secondary arch in the three-dimensional model in the second vertical direction and the standard height difference are greater than a first preset deviation threshold, the number of the shackles is adjusted so that the difference between the height difference obtained in real time and the standard height difference is less than or equal to the first preset deviation threshold.

[0024] Optionally, the adjusting the number of the shackles so that the difference between the height difference acquired in real time and the standard height difference is less than or equal to a first preset deviation threshold comprises:

[0025] If the height of the bottom of the main arch is higher than the height of the bottom of the secondary arch, reducing the number of the shackles so that the difference between the height difference obtained in real time and the standard height difference is less than or equal to a first preset deviation threshold;

[0026] If the height of the bottom of the primary arch is lower than the height of the bottom of the secondary arch, the number of the shackles is increased so that the difference between the height difference acquired in real time and the standard height difference is less than or equal to a first preset deviation threshold.

[0027] Optionally, the number of lifting components of each section of the arch rib is 2, and correspondingly, the number of the hooks is 2.

[0028] Optionally, adjusting the vertical height difference of the hooks in the plurality of groups of the hoisting assemblies so that the longitudinal posture of the arch rib conforms to the standard longitudinal posture of the arch rib in the three-dimensional model comprises:

[0029] Determining the relative positions of the two hooks in the three-dimensional model and the standard height difference in a third vertical direction along the length direction;

[0030] Along the length direction, the length of the pulley block connecting rope corresponding to at least one of the hooks is adjusted so that the difference between the vertical height difference of the two hooks and the second standard height difference is less than or equal to a second preset deviation threshold.

[0031] The method for adjusting the lifting posture of a spatial special-shaped arch rib segment provided by the present invention can realize the lifting process of the arch rib from gradual lifting → adjusting the lifting posture → vertical movement through the setting of the lifting components, the pulley block connecting rope and the pulley block, determine the center of gravity of the arch rib through the three-dimensional model of the arch bridge, arrange the lifting points of the main arch and the auxiliary arch based on the center of gravity, and determine the position of the hook according to the shortest length of the wire rope, the position of the center of gravity and the position of the lifting point, so that the center of the hook and the center of gravity are in the same vertical plane, and the pulley block and the center of gravity are on the same plumb line, and the multiple sets of lifting components that are arranged in coordination can ensure that the entire lifting process is strictly based on the position of the center of gravity. The ribs will not flip or other movements, which improves the safety of lifting and posture adjustment. The lateral posture of the arch rib along the direction perpendicular to the length is detected by changing the number of the shackles to make the lateral posture of the arch rib conform to the standard lateral posture of the arch rib in the three-dimensional model, and the vertical height difference of the hooks in the multiple groups of the lifting components is adjusted to make the longitudinal posture of the arch rib conform to the standard longitudinal posture of the arch rib in the three-dimensional model. Due to the different weights of the main arch and the auxiliary arch, the lateral posture and the longitudinal posture can be adjusted successively and stably. The final lifting state is the optimal state consistent with the state of the arch rib in the completed bridge, which can meet the welding and assembly requirements of the arch rib on the bracket and is convenient for on-site construction.

[0032] In a second aspect, the present invention further provides a system for adjusting the hoisting posture of a spatial special-shaped arch rib segment, which uses the method for adjusting the hoisting posture of a spatial special-shaped arch rib segment as described in any one of the above items, comprising:

[0033] A suspension point determination module, used to determine the center of gravity of the arch rib through the three-dimensional model of the arch bridge, and arrange the suspension points of the main arch and the secondary arch based on the center of gravity;

[0034] A hook position determination module, used to determine the position of the hook according to the shortest length of the wire rope, the position of the center of gravity and the position of the hanging point, the center of the hook and the center of gravity are in the same vertical plane, and the pulley block and the center of gravity are on the same plumb line;

[0035] A wire rope length determination module, used to determine the length of the first wire rope according to the distance between the hook and the hanging point on the main arch, and determine the number of the shackles according to the distance between the hook and the hanging point on the secondary arch and the length of the second wire rope, the first wire rope is used to guide the installation of the first wire rope, the length of the second wire rope is determined according to the length of the first wire rope, and the length of the second wire rope is used to guide the installation of the second wire rope and the shackle;

[0036] a transverse posture adjustment module, configured to detect the transverse posture of the arch rib along the direction perpendicular to the length by changing the number of the shackles, so that the transverse posture of the arch rib conforms to the standard transverse posture of the arch rib in the three-dimensional model;

[0037] The longitudinal posture adjustment module is used to adjust the vertical height difference of the hooks in multiple groups of the lifting components so that the longitudinal posture of the arch rib conforms to the standard longitudinal posture of the arch rib in the three-dimensional model.

[0038] The beneficial effects of the spatial special-shaped arch rib segment hoisting posture adjustment system provided by the present invention relative to the prior art are the same as the beneficial effects of the spatial special-shaped arch rib segment hoisting posture adjustment method relative to the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic flow chart of a method for adjusting the hoisting posture of a spatial special-shaped arch rib segment in an embodiment of the present invention is shown;

[0040] Figure 2 It shows a front view of the hoisted middle arch rib of the completed bridge in an embodiment of the present invention;

[0041] Figure 3 A side view of an arch rib in a completed bridge after hoisting in an embodiment of the present invention is shown;

[0042] Figure 4 The software interface for calculating the length and force of the steel wire rope in the embodiment of the present invention is shown. Figure 1 ;

[0043] Figure 5 The software interface for calculating the length and force of the steel wire rope in the embodiment of the present invention is shown. Figure 2 ;

[0044] Figure 6 A front view showing the arrangement of the simulated lifting assembly in an embodiment of the present invention is shown;

[0045] Figure 7 The embodiment of the present invention is shown Figure 6 AA direction schematic diagram in;

[0046] Figure 8 The embodiment of the present invention is shown Figure 6 BB direction schematic diagram in;

[0047] Fig. 9 A three-dimensional view of a hoisting assembly simulating the entire arch rib in an embodiment of the present invention is shown;

[0048] Fig.10 It shows a front view of the arch rib in a flat lying state according to an embodiment of the present invention;

[0049] Fig.11 A side view of the arch rib in a flat lying state according to an embodiment of the present invention is shown;

[0050] Fig.12 A front view of the arch rib before being hoisted in an embodiment of the present invention is shown;

[0051] Fig.13 A side view of the arch rib before being hoisted in an embodiment of the present invention is shown;

[0052] Fig.14 A side view of the arch rib when being hoisted in an embodiment of the present invention is shown;

[0053] Fig.15 A schematic diagram of the structure of the lifting lug in an embodiment of the present invention is shown;

[0054] Fig.16 It shows a schematic structural diagram of a bridge in an embodiment of the present invention;

[0055] Fig.17 The structural diagram of the spatial special-shaped arch rib segment lifting posture adjustment system is shown.

[0056] Description of reference numerals:

[0057] 1. Main arch; 2. Auxiliary arch; 3. Diagonal rod; 4. First wire rope; 5. Second wire rope; 6. Shackle; 7. Hook; 8. Center of gravity; 9. Pulley block connecting rope; 10. Pulley block; 11. Lifting lug; 12. Partition; 13. Arch rib. DETAILED DESCRIPTION

[0058] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0059] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0061] The Z axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the accompanying drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the accompanying drawings represents the left and right positions, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0062] Reference Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the present invention proposes a method for adjusting the hoisting posture of a spatial special-shaped arch rib segment, the arch bridge includes multiple sections of the arch rib 13, the arch rib 13 includes a main arch 1 and a secondary arch 2, the main arch 1 and the secondary arch 2 are connected by an inclined rod 3, along the length direction of the main arch 1 and the secondary arch 2, the main arch 1 and the secondary arch 2 are provided with multiple groups of hoisting components, the hoisting components include a hook 7, a wire rope and a shackle 6, the wire rope includes a first wire rope 4 and a second wire rope 5, the hook 7 and the main arch 1 are connected by the first wire rope 4, the hook 7 and the secondary arch 2 are connected by the second wire rope 5 and the shackle 6, the hooks 7 of the multiple groups of hoisting components are respectively connected by a pulley block connecting rope 9 and a pulley block 10, and the shackle 6 is arranged close to the secondary arch 2.

[0063] Specifically, a plurality of arch ribs 13 (segments) constitute the main part of the arch bridge, that is, the arch. Hoisting is to transport the arch ribs 13 from the factory through a hoist and place them in a state (generally, they are laid flat at the placement point, such as Fig.10 and Fig.11 As shown) is hoisted to the bracket used for welding the arch bridge, and then waits for welding to fix it into a completed bridge (as shown) Fig.16 As shown in the figure, the arch rib 13 is in different tilted states in the completed bridge, so the lifting needs to be realized from the placement point to the tilted placement on the bracket. Therefore, it is necessary to realize the tilt state adjustment of the arch rib 13 during the lifting process. The main arch 1 and the auxiliary arch 2 are connected by the inclined rod 3. The three constitute the arch rib 13. When the arch rib 13 is lifted by the lifting assembly, it is necessary to set lifting points on both the main arch 1 and the auxiliary arch 2. The first steel wire rope 4 and the second steel wire rope 5 are used to connect the arch bridge and the hook 7. The hook 7 is connected to the pulley block 10 through the pulley block connecting rope 9. Finally, the pulley block 10 is installed on the cross bar of the lifting device, and the cross bar can realize the movement in the vertical direction. Therefore, the lifting process of the arch rib 13 is: gradually lifting → adjusting the lifting posture → vertical movement. The present invention mainly improves the adjustment of the lifting posture. The lifting components are usually provided with multiple groups, such as 2 groups, and are symmetrically distributed along the center of gravity 8 in the length direction (X-axis direction). In this way, the stable state during the lifting process can be ensured, so that the arch rib 13 is stably lifted, and will not rotate or move due to its own imbalance during the lifting process.

[0064] The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment comprises:

[0065] S100: determining the center of gravity 8 of the arch rib 13 through the three-dimensional model of the arch bridge, and arranging the suspension points on the main arch 1 and the secondary arch 2 based on the center of gravity 8 , wherein the three-dimensional model of the arch bridge includes three-dimensional models of multiple sections of the arch rib 13 .

[0066] Specifically, a three-dimensional model of the arch ribs 13 is constructed, which are then assembled into an arch bridge to obtain a three-dimensional model of the arch bridge. The center of gravity 8 of each arch rib 13 is automatically calculated based on software, such as CAD. The center of gravity 8 is generally close to the main arch 1 because the main arch 1 is heavier. In order to achieve stable lifting, the lifting components are usually provided in multiple groups, such as 2 groups, and are symmetrically distributed along the center of gravity 8 in the length direction. For each group of lifting components, at least one lifting point is provided on the main arch 1 and the secondary arch 2, and the lifting point is used to lift the arch rib 13.

[0067] S200: Determine the position of the hook 7 according to the shortest length of the wire rope, the position of the center of gravity 8 and the position of the hanging point, and the center of the hook 7 and the center of gravity 8 are in the same vertical plane.

[0068] Specifically, the specifications of the wire rope (mainly referring to the diameter, which is used to withstand the corresponding tension) can be estimated before lifting. After obtaining several groups of wire ropes, the wire rope can be extended upward based on the shortest wire rope, and it is ensured that the top of the wire rope and the center of gravity 8 are in the same vertical plane as viewed from a direction perpendicular to the length (the width direction of the arch rib 13, that is, the Y-axis direction), and multiple groups of hooks 7 are respectively connected to the pulley block 10 through their respective corresponding pulley block connecting ropes 9. The pulley block 10 and the center of gravity 8 are near the same plumb line (the plumb line passes through the centers of the two pulley blocks 10). Therefore, the lifting is strictly based on the position of the center of gravity 8, and the arch rib 13 will not flip over during the lifting process.

[0069] S300: Determine the length of the first steel wire rope 4 according to the distance between the hook 7 and the hanging point on the main arch 1, determine the number of the shackles 6 according to the distance between the hook 7 and the hanging point on the secondary arch 2 and the length of the second steel wire rope 5, the first steel wire rope 4 is used to guide the installation of the first steel wire rope 4, the length of the second steel wire rope 5 is determined according to the length of the first steel wire rope 4, and the length of the second steel wire rope 5 is used to guide the installation of the second steel wire rope 5 and the shackles 6.

[0070] Specifically, the first steel wire rope 4 can be directly determined, because the center of gravity 8 is close to the main arch 1, the hook 7 is naturally close to the main arch 1, so the hook 7 is far away from the secondary arch 2. Considering that the weight of the secondary arch 2 is light, the connection between the hook 7 and the secondary arch 2 is set to be a length-adjustable connection, which is specifically manifested as the hook 7 and the secondary arch 2 are connected through the second steel wire rope 5 and the shackle 6. The shackle 6 is a common auxiliary lifting component in lifting, which is connected in series with each other. The lifting length is increased or shortened by changing the number of series connections. The length of the first steel wire rope 4 and the second steel wire rope 5 can be set to be equal. Therefore, the difference between the distance between the hook 7 and the lifting point on the secondary arch 2 and the length of the second steel wire rope 5 can be determined, and the number of shackles 6 can be obtained by the ratio of the length difference and the single series length of a single hook 7 (rounded). Therefore, it can be used to guide the installation of the first steel wire rope 4, the second steel wire rope 5 and the shackle 6 between the hook 7 and the arch rib 13.

[0071] S400: detecting the lateral posture of the arch rib 13 along the direction perpendicular to the length by changing the number of the shackles 6, so that the lateral posture of the arch rib 13 conforms to the standard lateral posture of the arch rib 13 in the three-dimensional model.

[0072] Specifically, viewed from a direction perpendicular to the length (width direction of the arch rib 13, Y-axis direction), a change in the number of shackles 6 will cause a change in the distance between the secondary arch 2 and the hook 7, thereby changing the lateral posture of the arch rib 13. The standard lateral posture can be manifested as the bottom heights of the main arch 1 and the secondary arch 2 being not much different, which is also the lateral posture of the main arch 1 and the secondary arch 2 in the completed bridge.

[0073] S500: adjusting the vertical height difference between the hooks 7 in the plurality of groups of the hoisting components so that the longitudinal posture of the arch rib 13 conforms to the standard longitudinal posture of the arch rib 13 in the three-dimensional model.

[0074] Due to the different weights of the main arch 1 and the secondary arch 2, the adjustment of the transverse posture and the longitudinal posture is carried out in the order of easy first and difficult later, which is conducive to stable lifting.

[0075] Specifically, in the initial lifting state, the arch rib 13 is flat, and there is no height difference in the vertical direction between the hooks 7 of the multiple groups of the lifting components. After adjusting the lateral posture, the arch rib 13 needs to be tilted when viewed from the length direction. Therefore, if the longitudinal posture is to be changed after adjusting the lateral posture, a vertical height difference can be made between the hooks 7 so that the arch rib 13 tends to tilt. Different vertical height differences correspond to different degrees of inclination. The standard longitudinal posture can be expressed as a fixed vertical height difference between the hooks 7. The standard longitudinal posture can be obtained by adjusting according to the fixed vertical height difference.

[0076] When this embodiment is applied in practice, the lifting process of the arch rib 13 from gradual lifting → adjusting the lifting posture → vertical movement can be realized through the setting of the lifting components, the pulley block connecting rope 9 and the pulley block 10. The center of gravity 8 of the arch rib 13 is determined by the three-dimensional model of the arch bridge, and the lifting points of the main arch 1 and the secondary arch 2 are arranged based on the center of gravity 8. The position of the hook 7 is determined according to the shortest length of the wire rope, the position of the center of gravity 8 and the position of the lifting point, so that the center of the hook 7 and the center of gravity 8 are in the same vertical plane, and the pulley block 10 and the center of gravity 8 are on the same plumb line. The multiple sets of lifting components that are set together can ensure that the entire lifting process is strictly based on the position of the center of gravity 8, and the arch rib 13 will not be moved during the lifting process. The safety of hoisting and posture adjustment is improved by performing movements such as flipping, and the lateral posture of the arch rib 13 along the direction perpendicular to the length is detected by changing the number of the shackles 6, so that the lateral posture of the arch rib 13 conforms to the standard lateral posture of the arch rib 13 in the three-dimensional model, and the vertical height difference of the hooks 7 in the multiple groups of the hoisting components is adjusted to make the longitudinal posture of the arch rib 13 conform to the standard longitudinal posture of the arch rib 13 in the three-dimensional model. Due to the different weights of the main arch 1 and the auxiliary arch 2, the lateral posture and the longitudinal posture can be adjusted stably in sequence, and the final hoisting state is the optimal state consistent with the state of the arch rib 13 in the completed bridge, which can meet the welding and assembly requirements of the arch rib 13 on the bracket and is convenient for on-site construction.

[0077] The present invention combines theoretical simulation with on-site application, is simple and efficient to operate, and is easy to implement. It can adjust the lateral and longitudinal postures of the arch rib 13, and can improve on-site construction efficiency.

[0078] After adjusting the longitudinal posture, the posture adjustment results (lateral posture and longitudinal posture) can be measured and checked again. If they are unqualified, they can be fine-tuned again. The final bridge is as follows: Fig.16 As shown, for example, the maximum hoisting section (arch rib 13) is 46.7m long, weighs 340t, and has a hoisting height of 62m. Both the main arch 1 and the auxiliary arch 2 have octagonal cross-sections, and the cross-sectional heights and arch axes of the main arch 1 and the auxiliary arch 2 are different.

[0079] like Figure 2 , Figure 3 , Fig. 9 and Fig.15 As shown, as an optional embodiment of the present invention, the arrangement of the suspension points of the main arch 1 and the secondary arch 2 based on the center of gravity 8 includes:

[0080] For multiple groups of the lifting components, based on the positions of the multiple lifting ears 11 evenly distributed on the arch ribs 13, at least one of the lifting ears 11 on the main arch 1 and the secondary arch 2 located on both sides of the center of gravity 8 in the length direction is selected as the lifting point.

[0081] Specifically, see Fig. 9 , the lifting components are distributed on both sides of the center of gravity 8 along the length direction, and the lifting points are also distributed on both sides of the center of gravity 8. The main arch 1 and the auxiliary arch 2 of the arch rib 13 are evenly provided with lifting ears 11 along the length direction, and the Nth lifting ear 11 closer to the center of gravity 8 is selected as the lifting ear 11 on the auxiliary arch 2, and the Nth and N+mth lifting ears 11 closer to the center of gravity 8 are selected as the lifting ears 11 on the main arch 1, wherein N and m are both positive integers. For example, when there are 2 groups of lifting components, a lifting ear 11 on the auxiliary arch 2 closest to the center of gravity 8 and two consecutive lifting ears 11 on the main arch 1 closest to the center of gravity 8 are selected. If they are distinguished by the position of the partition 12, then one The lifting points of one set of lifting components are respectively located at: a lifting ear 11 on the secondary arch 2 at the position of the 12th partition 12 on the arch foot side in the C segment of the arch rib 13, and two consecutive lifting ears 11 on the main arch 1 at the position of the 6th partition 12 on the arch foot side in the C segment of the arch rib 13; the lifting points of another set of lifting components are respectively located at: a lifting ear 11 on the secondary arch 2 at the position of the 10th partition 12 on the arch foot side in the D segment of the arch rib 13, and two consecutive lifting ears 11 on the main arch 1 at the position of the 7th partition 12 on the arch foot side in the D segment of the arch rib 13 (the arch rib 13 is divided into A\B\C\D segments in sequence along the length direction).

[0082] When this embodiment is applied in practice, the lifting lugs 11 can be determined by pre-setting (such as being symmetrically distributed on both sides of the lifting point), and the positions of the lifting points can be manually modified and supplemented.

[0083] like Figure 4 As shown, after determining the position of the hook 7 according to the shortest length of the wire rope, the position of the center of gravity 8 and the position of the hanging point, it also includes:

[0084] The stress conditions of the steel wire rope between the hook 7 and each of the suspension points are simulated, and the specifications of the first steel wire rope 4 and the second steel wire rope 5 are determined according to the stress conditions.

[0085] When this embodiment is applied in practice, it can be based on Midas Civil software. After determining the position of the hook 7, the hook 7 and the lifting point are directly connected, and a force diagram is constructed with the arch rib 13 (in the bridge state) and the hook 7 to simulate the force condition (of each arch rib 13 in the lifting state). The gravity and other parameters of the arch rib 13 are known (adding its own weight), and the magnitude of the tension on each wire rope can be directly calculated based on the force analysis. The specifications of the wire rope can be selected based on the maximum tension. The specifications here mainly include the diameter of the wire rope. For example, the tension converted into a weight of 50t, then the diameter of the wire rope is determined to be 42-48mm. It should be noted that the pulley block connecting rope 9 and the pulley block 10 are generally provided by the sling, and a suitable specification is selected by default.

[0086] exist Figure 4 and Figure 5 middle( Figure 5 yes Figure 4 Analysis annotation), simulate the force condition of the wire rope (converted into weight), and perform static analysis to obtain that for the first wire rope 4, they are 58t, 104t, 65t, and 68t respectively, and for the second wire rope 5, they are 42t and 45t respectively. For the second wire rope 5 where 45t is located, its unit number is 101, unit length = 8568.1646mm, and the angle with the overall coordinate plane [XY, XZ, YZ] = (44.776, 40.657, 16.368) [unit: degree], unit weight = 0.279249t. For other related parameters, please refer to Figure 4 and Figure 5 .

[0087] like Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, as an optional embodiment of the present invention, the position of the hook 7 is determined according to the shortest length of the wire rope, the position of the center of gravity 8 and the position of the hanging point, and the center of the hook 7 and the center of gravity 8 are in the same vertical plane, which includes:

[0088] Along the length direction, the vertical plane passing through the center of gravity 8 is determined.

[0089] Specifically, the vertical plane extends along the straight line where the center of gravity 8 is located and along the length direction, which is equivalent to determining the vertical plane by two straight lines (which can be considered to coincide with the XZ plane).

[0090] Taking the lifting point on the main arch 1 close to the secondary arch 2 as the starting point, a steel wire rope with the shortest length is simulated to be installed upward along the (first) vertical direction, and its end point intersects with the vertical plane where the center of gravity 8 is located, and the end point is used as the center of the hook 7.

[0091] Specifically, without considering the deviation caused by the connection position, the shortest wire rope is used as an experiment to simulate the installation. The top end of the wire rope intersects with the vertical plane, and the bottom end is located at the nearest hanging point on the main arch 1. It is considered that the nearest wire rope can play a role and realize the shortest connection from the hanging point to the arch rib 13. The position of the hook 7 simulated in this way can make the top ends of all the wire ropes intersect in the vertical plane. Since the vertical plane is the vertical plane where the plumb line of the center of gravity 8 is located, stable lifting can be achieved through these steel wire ropes.

[0092] When this embodiment is applied in practice, the position of the hook 7 is inferred through the position of the shortest wire rope and the center of gravity 8 (after the center of the hook 7 is determined, the hook will adaptively change the inclination angle as the position of the pulley block 10 is determined), thereby determining the position relative to the arch rib 13 during actual lifting (the hook 7 is released by the pulley block connecting rope 9 and the pulley block 10 to reach this position). When two sets of lifting components are set, in the initial state of lifting, it can be considered that the positions of the two hooks 7 are symmetrical (such as Fig.12 shown).

[0093] like Figure 8 and Fig.17 As shown, as an optional embodiment of the present invention, the determining the number of the shackles 6 according to the distance between the hook 7 and the lifting point on the secondary arch 2 and the length of the second steel wire rope 5 includes:

[0094] The distance between the hook 7 and the hanging point on the secondary arch 2 is obtained, and the length difference between the distance between the hook 7 and the hanging point on the secondary arch 2 and the determined length of the second steel wire rope 5 is determined.

[0095] Specifically, once the position of the hook 7 relative to the arch rib 13 is determined, the position of the hook 7 relative to the main arch 1 and the secondary arch 2 is also determined, and the hanging points on the main arch 1 and the secondary arch 2 are also determined, the distance between the hook 7 and the hanging points on the secondary arch 2 can be directly obtained. The length of the pre-selected second steel wire rope 5 is generally close to or the same as the length of the first steel wire rope 4, thereby improving versatility, and the length difference can be obtained directly by subtracting them.

[0096] The number of the shackles 6 corresponding to each section of the second steel wire rope 5 is determined according to the length difference and the individual lengths of the shackles 6 in the series state.

[0097] Specifically, since the shackles 6 are connected in series, that is, they are connected one by one, the length in the connected state is also known, and the difference is divided by the single length of the shackle 6 to determine the number of the shackles 6 corresponding to each section of the second steel wire rope 5, and the result can be rounded.

[0098] When this embodiment is applied in practice, for example, the distance between the hook 7 (bottom) and the hanging point on the secondary arch 2 is 6m, and the pre-selected length of the second steel wire rope 5 is 5m, and the single length of each shackle 6 is 30cm, then the number of the shackles 6 corresponding to the second steel wire rope 5 is directly determined to be 3 (which can be directly determined by rounding off). This embodiment simulates the connection between the hook 7 and the secondary arch 2, and considers the length of the second steel wire rope 5 (preferably the same length as the first steel wire rope 4. It can be known later that the two can actually be used interchangeably because the tension that can be withstood can also be the same), and combines the two to reasonably determine the number of shackles 6 to ensure that the subsequent lateral posture can be adjusted by the number of shackles 6.

[0099] like Fig.13 and Fig.14 As shown, as an optional embodiment of the present invention, the detecting the lateral posture of the arch rib 13 along the direction perpendicular to the length by changing the number of the shackles 6 so that the lateral posture of the arch rib 13 conforms to the standard lateral posture of the arch rib 13 in the three-dimensional model includes:

[0100] A first height difference between the bottom of the main arch 1 and the bottom of the auxiliary arch 2 in the second vertical direction is obtained in real time.

[0101] Specifically, when measuring the height difference, the bottom of the main arch 1 or the secondary arch 2 is generally used as the reference line or reference plane, and the adjacent bottom edge points of the secondary arch 2 or the main arch 1 are used as the parallel line of the reference line or the parallel plane of the reference plane, and then the height difference between the two can be determined. In practice, prisms can be set at the bottom of the main arch 1 and the secondary arch 2, and then the height difference can be determined by total station monitoring. Of course, it can also be determined by manual measurement or other distance measurement methods.

[0102] If the difference between the height difference and the height difference between the bottom of the main arch 1 and the bottom of the secondary arch 2 in the (second) vertical direction in the three-dimensional model and the standard height difference is greater than a first preset deviation threshold, the number of the shackles 6 is adjusted so that the difference between the height difference obtained in real time and the standard height difference is less than or equal to the first preset deviation threshold.

[0103] Specifically, the standard height difference represents the state of the bottom of the main arch 1 and the bottom of the secondary arch 2 in the completed bridge. When hoisted to the bracket, the arch section needs to be close to this state. By adjusting the number of the shackles 6, the height of the secondary arch 2 from the hook 7 is changed, and the lateral posture is changed. Therefore, the height difference between the bottom of the main arch 1 and the bottom of the secondary arch 2 in the (second) vertical direction can be changed, so that the height difference approaches the standard height difference, and then the standard lateral posture is obtained.

[0104] In an optional embodiment, the adjusting the number of the shackles 6 so that the difference between the height difference acquired in real time and the standard height difference is less than or equal to a first preset deviation threshold comprises:

[0105] If the height of the bottom of the primary arch 1 is higher than the height of the bottom of the secondary arch 2 , the number of the shackles 6 is reduced so that the difference between the height difference obtained in real time and the standard height difference is less than or equal to a first preset deviation threshold.

[0106] Specifically, in order to reduce the height difference between the bottom of the main arch 1 and the bottom of the secondary arch 2 ( Figure 3 When the relative height relationship between the bottom of the main arch 1 and the bottom of the secondary arch 2 is as follows: when the main arch 1 is relatively high, the number of the shackles 6 should be reduced (one by one), which is equivalent to lifting the secondary arch 2 upward. During the reduction process, the height difference and the standard height difference need to be detected in real time until the difference is less than or equal to the first preset deviation threshold, so that the main arch 1 and the secondary arch 2 are at a position with a comparable height and are not too far apart, which is also in line with the welding state of the arch bridge.

[0107] If the height of the bottom of the main arch 1 is lower than the height of the bottom of the secondary arch 2 , the number of the shackles 6 is increased so that the difference between the height difference obtained in real time and the standard height difference is less than or equal to a first preset deviation threshold.

[0108] Specifically, in order to adjust the height difference between the bottom of the main arch 1 and the secondary arch 2 to be close to the first preset deviation threshold, when the relative height relationship between the bottom of the main arch 1 and the secondary arch 2 is: when the secondary arch 2 is relatively high, the number of the shackles 6 should be increased (one by one), which is equivalent to lowering the secondary arch 2 downward. During the increase, it is necessary to detect the difference between the height difference and the standard height difference in real time until the difference is less than or equal to the first preset deviation threshold, so that the main arch 1 and the secondary arch 2 are at a position of equivalent height and are not too far apart, which is also in line with the welding state of the arch bridge.

[0109] When this embodiment is applied in practice, a method of increasing or decreasing the number of shackles 6 is provided according to different situations of the main arch 1 and the auxiliary arch 2, so that the main arch 1 and the auxiliary arch 2 (the bottom thereof) are at a position with a comparable height, which is also conducive to the stable lifting of the arch rib 13. For example, in practice, the height difference between the bottom of the main arch 1 and the auxiliary arch 2 is required to be within 20 cm. According to the change in the height difference caused by the increase or decrease of the shackles 6, there is a corresponding relationship between the two. According to this corresponding relationship, multiple shackles 6 can be directly increased or decreased (if necessary), thereby improving the speed of lateral posture adjustment.

[0110] like Figure 7 , Figure 8 and Fig. 9 As shown, as an optional embodiment of the present invention, the number of the lifting components of each section of the arch rib 13 is 2, and correspondingly, the number of the hooks 7 is 2.

[0111] Specifically, if two sets of lifting components are used for each section of the arch rib 13, two hooks 7 are required (correspondingly, two sets of pulley block connecting ropes 9 are equipped), each set of lifting components is equipped with one hook 7, and the number of the first steel wire rope 4 corresponding to each set of the lifting components is at least 1 section, preferably 2 sections (roots), and the number of the second steel wire rope 5 corresponding to each set of the lifting components can be set to 1 section. This is due to the heavy weight of the main arch 1. Therefore, it can be ensured that the tension (internal stress) of each section of the steel wire rope will not differ too much. For example, for an arch section of about 300t, according to Figure 2 The middle angle is 21 degrees, the number of the first steel wire ropes 4 is 2, the second steel wire rope 5 is 1, the tension on each section of the steel wire rope is converted into a weight of about 50t, and the diameter of each section of the steel wire is determined to be about 42-48mm. Of course, if the number of each first steel wire rope 4 is 1, it is also possible, and the tension it is subjected to is relatively large. The first steel wire rope 4 is preferably 2 or more sections, which can further improve the stability of the hoisting.

[0112] like Figure 2 and Fig.12 As shown, as an optional embodiment of the present invention, the vertical height difference of the hooks 7 in the plurality of groups of the hoisting components is adjusted so that the longitudinal posture of the arch rib 13 conforms to the standard longitudinal posture of the arch rib 13 in the three-dimensional model, including:

[0113] Along the length direction, the relative positions of the two hooks 7 in the three-dimensional model and the standard height difference in the third vertical direction are determined.

[0114] Specifically, along the positive direction of the X-axis, the relative (high and low) positions of the hooks 7 of the two lifting components in the three-dimensional model are, for example, high on the left and low on the right, and the standard height H2 (indicated by H2 in the figure) of the two in the third vertical direction is measured. Due to the existence of this height difference, the arch rib 13 remains in the state of the completed bridge, and is generally in an inclined state (along the X-axis) (such as high on the left and low on the right).

[0115] Along the length direction, the length of the pulley block connecting rope 9 corresponding to at least one of the hooks 7 is adjusted so that the difference between the vertical height difference between the two hooks 7 and the second standard height difference is less than or equal to the second preset deviation threshold.

[0116] Specifically, in the initial state, the two hooks 7 are flush, that is, at the same height (eg Fig.12 As shown), at this time, the position of the left hook 7 is to be raised, or the position of the right hook 7 is to be lowered. For example, if only the position of the left hook 7 is to be raised, the means adopted is to shrink the length of the pulley block connecting rope 9 corresponding to the left hook 7 (a displacement sensor can be used), and there is a corresponding relationship between the shrinkage length and the position change of the hook 7, such as a 2-fold relationship (which changes with the pulley block 10). For example, if the standard height difference is 50 cm, the length of the pulley block connecting rope 9 should be shrunk by 100 cm, thereby achieving the vertical height difference of the two hooks 7 (a displacement sensor can be installed on each hook 7 to directly measure the height from the hook 7 to the ground to calculate the vertical height difference) and the second standard height difference being less than or equal to the second preset deviation threshold, and the arch rib 13 is adjusted to a longitudinal inclined state, as shown Fig.12 As shown. If the left side is low and the right side is high, the hook 7 on the right side can be retracted, and so on.

[0117] In another embodiment of manually judging the height difference, the bracket supporting the arch rib 13 will be installed in advance according to the required height (so the actual height difference can be directly observed with the naked eye). After lifting, the worker on the top of the bracket calls the floating crane driver through the intercom and independently controls the two hooks 7 of the floating crane to rise and fall to adjust the height difference.

[0118] It should be noted that, considering the safety of the arch section during the lifting and installation process, it is necessary to ensure that the arch section is at a certain height from the ground (such as 500mm from the ground) before starting the longitudinal posture adjustment to avoid hitting the ground.

[0119] The above ensures the rapid and accurate adjustment of the longitudinal posture, and is carried out after the adjustment of the lateral posture, thereby completing the adjustment of the tilt posture of the arch section, facilitating direct lifting to the bracket for welding, and also ensuring the safety and rationality of the lifting process.

[0120] like Fig.17As shown, on the other hand, the present invention further provides a spatial special-shaped arch rib segment hoisting posture adjustment system 200, which uses the spatial special-shaped arch rib segment hoisting posture adjustment method described in the above embodiment, including:

[0121] A suspension point determination module 210, configured to determine the center of gravity 8 of the arch rib 13 through the three-dimensional model of the arch bridge, and arrange the suspension points of the main arch 1 and the secondary arch 2 based on the center of gravity 8;

[0122] A hook position determination module 220, for determining the position of the hook 7 according to the shortest length of the wire rope, the position of the center of gravity 8 and the position of the hanging point, wherein the center of the hook 7 and the center of gravity 8 are in the same vertical plane, and the pulley block 10 and the center of gravity 8 are in the same plumb line;

[0123] A wire rope length determination module 230, for determining the length of the first steel wire rope 4 according to the distance between the hook 7 and the suspension point on the primary arch 1, and determining the number of the shackles 6 according to the distance between the hook 7 and the suspension point on the secondary arch 2 and the length of the second steel wire rope 5, wherein the first steel wire rope 4 is used to guide the installation of the first steel wire rope 4, the length of the second steel wire rope 5 is determined according to the length of the first steel wire rope 4, and the length of the second steel wire rope 5 is used to guide the installation of the second steel wire rope 5 and the shackles 6;

[0124] A lateral posture adjustment module 240 is used to detect the lateral posture of the arch rib 13 along the direction perpendicular to the length by changing the number of the shackles 6, so that the lateral posture of the arch rib 13 conforms to the standard lateral posture of the arch rib 13 in the three-dimensional model;

[0125] The longitudinal posture adjustment module 250 is used to adjust the vertical height difference of the hooks 7 in the plurality of groups of the lifting components so that the longitudinal posture of the arch rib 13 conforms to the standard longitudinal posture of the arch rib 13 in the three-dimensional model.

[0126] The specific implementation of this embodiment can refer to the corresponding implementation method mentioned above and will not be described again here.

[0127] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0128] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

[0129] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for adjusting the hoisting posture of a spatial special-shaped arch rib segment, characterized in that: The arch bridge comprises a plurality of arch ribs (13), wherein the arch ribs (13) comprise a main arch (1) and a secondary arch (2), wherein the main arch (1) and the secondary arch (2) are connected via an inclined rod (3), and along the length direction of the main arch (1) and the secondary arch (2), the main arch (1) and the secondary arch (2) are provided with a plurality of lifting components, wherein the lifting components comprise a lifting hook (7), a steel wire rope and a shackle (6), wherein the steel wire rope comprises a first steel wire rope (4) and a second steel wire rope ( 5), the hook (7) and the main arch (1) are connected via the first steel wire rope (4), the hook (7) and the secondary arch (2) are connected via the second steel wire rope (5) and the shackle (6), the hooks (7) of the plurality of lifting assemblies are respectively connected via pulley block connecting ropes (9) and pulley blocks (10), the shackle (6) is arranged close to the secondary arch (2), and the method for adjusting the lifting posture of the spatial special-shaped arch rib segment comprises: Determining the center of gravity (8) of the arch rib (13) through the three-dimensional model of the arch bridge, and arranging the suspension points on the main arch (1) and the secondary arch (2) based on the center of gravity (8), wherein the three-dimensional model of the arch bridge includes three-dimensional models of multiple sections of the arch rib (13); The position of the hook (7) is determined according to the shortest length of the steel wire rope, the position of the center of gravity (8) and the position of the hanging point, and the center of the hook (7) and the center of gravity (8) are in the same vertical plane; The length of the first steel wire rope (4) is determined according to the distance between the lifting hook (7) and the lifting point on the main arch (1), the number of the shackles (6) is determined according to the distance between the lifting hook (7) and the lifting point on the secondary arch (2) and the length of the second steel wire rope (5), the first steel wire rope (4) is used to guide the installation of the first steel wire rope (4), the length of the second steel wire rope (5) is determined according to the length of the first steel wire rope (4), and the length of the second steel wire rope (5) is used to guide the installation of the second steel wire rope (5), and the number of the shackles (6) is used to guide the installation of the shackles (6); After changing the number of the shackles (6), the lateral posture of the arch rib (13) along the direction perpendicular to the length is detected, so that the lateral posture of the arch rib (13) conforms to the standard lateral posture of the arch rib (13) in the three-dimensional model; By adjusting the vertical height difference between the hooks (7) in the plurality of groups of the hanging components, the longitudinal posture of the arch rib (13) is made to conform to the standard longitudinal posture of the arch rib (13) in the three-dimensional model.

2. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to claim 1 is characterized in that: The method of arranging the suspension points of the main arch (1) and the secondary arch (2) based on the center of gravity (8) comprises: For multiple groups of the lifting components, based on the positions of multiple lifting ears (11) evenly distributed on the arch rib (13), at least one of the lifting ears (11) on both sides of the center of gravity (8) in the length direction and respectively located on the main arch (1) and the secondary arch (2) is selected as the lifting point.

3. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to claim 1, characterized in that: The method of determining the position of the hook (7) according to the shortest length of the wire rope, the position of the center of gravity (8) and the position of the hanging point, wherein the center of the hook (7) and the center of gravity (8) are located in the same vertical plane, comprises: Determine the vertical plane passing through the center of gravity (8) along the length direction; Taking the suspension point on the main arch (1) close to the secondary arch (2) as the starting point, the steel wire rope with the shortest length is tilted upward along the first vertical direction to simulate the installation, and its end point intersects with the vertical plane where the center of gravity (8) is located, and the end point is used as the center of the hook (7).

4. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to claim 1, characterized in that: After determining the position of the hook (7) according to the shortest length of the steel wire rope, the position of the center of gravity (8) and the position of the hanging point, the method further comprises: The stress conditions of the steel wire rope between the hook (7) and each of the suspension points are simulated, and the specifications of the first steel wire rope (4) and the second steel wire rope (5) are determined according to the stress conditions.

5. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to any one of claims 1 to 4, characterized in that: Determining the number of the shackles (6) according to the distance between the hook (7) and the lifting point on the secondary arch (2) and the length of the second steel wire rope (5) comprises: Obtaining the distance between the hook (7) and the hanging point on the secondary arch (2), and determining the length difference between the distance between the hook (7) and the hanging point on the secondary arch (2) and the determined length of the second steel wire rope (5); The number of the shackles (6) corresponding to each section of the second steel wire rope (5) is determined according to the length difference and the individual lengths of the shackles (6) in the series state.

6. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to any one of claims 1 to 4, characterized in that: The step of detecting the lateral posture of the arch rib (13) along the direction perpendicular to the length direction by changing the number of the shackles (6) so as to make the lateral posture of the arch rib (13) conform to the standard lateral posture of the arch rib (13) in the three-dimensional model comprises: Acquiring in real time a first height difference between the bottom of the main arch (1) and the bottom of the secondary arch (2) in a second vertical direction; If the difference between the first height difference and a first standard height difference between the bottom of the main arch (1) and the bottom of the secondary arch (2) in the three-dimensional model in the second vertical direction is greater than a first preset deviation threshold, the number of the shackles (6) is adjusted so that the difference between the first height difference obtained in real time and the first standard height difference is less than or equal to the first preset deviation threshold.

7. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to claim 6 is characterized in that: The step of adjusting the number of the shackles (6) so that the difference between the first height difference acquired in real time and the first standard height difference is less than or equal to the first preset deviation threshold comprises: If the height of the bottom of the main arch (1) is higher than the height of the bottom of the secondary arch (2), the number of the shackles (6) is reduced so that the difference between the first height difference obtained in real time and the first standard height difference is less than or equal to the first preset deviation threshold; If the height of the bottom of the main arch (1) is lower than the height of the bottom of the secondary arch (2), the number of the shackles (6) is increased so that the difference between the first height difference obtained in real time and the first standard height difference is less than or equal to the first preset deviation threshold.

8. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to any one of claims 1 to 4, characterized in that: The number of the lifting components of each section of the arch rib (13) is 2, and correspondingly, the number of the lifting hooks (7) is 2.

9. The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to claim 8, characterized in that: The method of adjusting the vertical height difference between the hooks (7) in the plurality of groups of the hoisting components so that the longitudinal posture of the arch rib (13) conforms to the standard longitudinal posture of the arch rib (13) in the three-dimensional model comprises: Determining the relative positions of the two hooks (7) in the three-dimensional model and a second standard height difference in a third vertical direction along the length direction; Along the length direction, the length of the pulley block connecting rope (9) corresponding to at least one of the hooks (7) is adjusted so that the difference between the vertical height difference of the two hooks (7) and the second standard height difference is less than or equal to a second preset deviation threshold.

10. A spatial special-shaped arch rib segment hoisting posture adjustment system, characterized in that: The method for adjusting the hoisting posture of a spatial special-shaped arch rib segment according to any one of claims 1 to 9 comprises: A suspension point determination module, used for determining the center of gravity (8) of the arch rib (13) through a three-dimensional model of the arch bridge, and arranging the suspension points of the main arch (1) and the secondary arch (2) based on the center of gravity (8); A hook position determination module, used for determining the position of the hook (7) according to the shortest length of the wire rope, the position of the center of gravity (8) and the position of the suspension point, wherein the center of the hook (7) and the center of gravity (8) are in the same vertical plane, and the pulley block (10) and the center of gravity (8) are on the same plumb line; A wire rope length determination module, used to determine the length of the first wire rope (4) according to the distance between the hook (7) and the suspension point on the main arch (1), and to determine the number of shackles (6) according to the distance between the hook (7) and the suspension point on the secondary arch (2) and the length of the second wire rope (5), wherein the first wire rope (4) is used to guide the installation of the first wire rope (4), the length of the second wire rope (5) is determined according to the length of the first wire rope (4), and the length of the second wire rope (5) is used to guide the installation of the second wire rope (5), and the number of shackles (6) is used to guide the installation of the shackles (6); a transverse posture adjustment module, used for detecting the transverse posture of the arch rib (13) along the direction perpendicular to the length by changing the number of the shackles (6), so that the transverse posture of the arch rib (13) conforms to the standard transverse posture of the arch rib (13) in the three-dimensional model; A longitudinal posture adjustment module is used to adjust the vertical height difference between the hooks (7) in multiple groups of the lifting components so that the longitudinal posture of the arch rib (13) conforms to the standard longitudinal posture of the arch rib (13) in the three-dimensional model.

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