Anti-overturning installation method and anti-overturning device for cable structure system

Abstract

The present invention belongs to the technical field of building construction, and discloses an anti-overturning installation method and an anti-overturning device for a cable structure system. The installation method includes the following steps: S1. Assemble the cable group; S2. Carry out overall traction, tensioning, and pinning of the cable group to complete the installation between the cable group and the end structure; S3. Determine the installation sequence of the secondary structure according to the layout of the lifting equipment and the arrival situation of the secondary structure, and hoist the secondary structure through the lifting equipment according to the installation sequence; S4. Install the anti-overturning device after the secondary structure is installed in place. The anti-overturning device is connected to the secondary structure and the cable clamp, so that the eccentric load moment of the cable group is resisted and consumed by the secondary structure, and the lateral tilt deformation of the cable group is restricted; S5. Repeat step S3 and step S4 to install the remaining secondary structures. The anti-overturning device can effectively control the torsional deformation of the cable group, make the installation of the secondary structure tend to be free and flexible, improve the construction efficiency, and can avoid the construction risks brought by the high-altitude suspension of the counterweight blocks, and reduce the construction cost.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an anti-overturning installation method and an anti-overturning device for a cable structure system. Background Art

[0002] The cable structure system is installed between two end structures arranged at intervals, and includes cables connected between the two end structures and a secondary structure installed between two adjacent cables. The cables and the secondary structure form a cable net structure.

[0003] Due to constraints such as tensioning requirements, cable manufacturing processes, and cost, cables with higher cable forces often utilize a multi-cable layout. Specifically, multiple cables are connected through cable clamps to form an integrated cable group. Substructures and decorative elements are then arranged orthogonally or diagonally on the cable group, ultimately forming a complete cable net. During construction, asymmetric installation of the substructure can cause the cable group to twist and deflect under load. Severe asymmetry can even lead to overturning, posing serious construction risks.

[0004] To address the above technical issues, two main control strategies are adopted in the existing technology: 1) strictly controlling the secondary structure installation process and symmetrically lifting to ensure that excessive asymmetric loads are not generated during the entire construction process to prevent the structure from overturning; 2) hanging counterweights to balance the eccentric loads caused by the secondary structure installation.

[0005] While Option 1 doesn't increase the cost of the measures, the secondary structure must be installed with strict symmetry to avoid excessive asymmetric loads. This, in turn, places higher demands on material supply, component stacking, lifting equipment layout, and management and control. This complicates the construction process, and the lifting equipment must constantly reposition, significantly reducing efficiency. Furthermore, any problems with the material supply sequence can lead to idle and waiting times, indirectly increasing construction costs. Option 2, while reducing construction management requirements, also increases the costs of manufacturing, purchasing, and installing the counterweight. Furthermore, heavier counterweights not only significantly increase construction costs, but also pose a significant safety hazard associated with hanging heavy weights at high altitudes. Summary of the Invention

[0006] The purpose of the present invention is to provide an anti-overturning installation method and anti-overturning device for a cable structure system, which can effectively control the torsional deformation of the cable group, make the installation of the secondary structure free and flexible, improve construction efficiency, avoid the construction risks brought by the high-altitude suspension of the counterweight block, and reduce construction costs.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In a first aspect, a method for installing a cable structure system to prevent overturning is provided, comprising the following steps:

[0009] S1. Assembling a cable assembly, wherein the cable assembly includes a plurality of cables, and the plurality of cables are connected as a whole by cable clamps;

[0010] S2, pulling, tensioning, and pinning the cable group as a whole to complete the installation between the cable group and the end structure;

[0011] S3. Determine the installation sequence of the secondary structures based on the arrangement of the lifting equipment and the secondary structure arrival conditions, and hoist the secondary structures using the lifting equipment according to the installation sequence, with both ends of the secondary structures respectively connected to the cable clips on the adjacent cable groups;

[0012] S4. After the secondary structure is installed in place, an anti-tilt device is installed. The anti-tilt device is connected to the secondary structure and the cable clamp so that the eccentric load bending moment of the cable group is resisted and absorbed by the secondary structure, thereby limiting the lateral deformation of the cable group.

[0013] S5. Repeat steps S3 and S4 to install the remaining sub-structures.

[0014] As a preferred embodiment of the cable structure system anti-overturning installation method provided by the present invention, in step S4, the lifting equipment lifts the secondary structure by means of a hook, and after the secondary structure is installed in place and before the hook of the lifting equipment is released, the anti-overturning device is installed;

[0015] After the anti-tilt device is installed, the lifting equipment drives its hook to release the hook.

[0016] As a preferred solution of the cable structure system anti-overturning installation method provided by the present invention, the following steps are also included:

[0017] S6. After the secondary structures symmetrical on both sides of the same cable clamp are installed in place, the anti-tilt device connected to the cable clamp on the first installed secondary structure is removed, and the anti-tilt device does not need to be installed between the second secondary structure installed later and the cable clamp.

[0018] As a preferred solution of the cable structure system anti-overturning installation method provided by the present invention, after step S6, the method further includes:

[0019] S7, replacing the portion where the anti-tilt device has been removed with a secondary structure or decorative parts;

[0020] S8. After all sub-structures are installed, remove all remaining anti-tilt devices, complete the filling of all remaining sub-structures or decorative parts, and the overall installation of the cable structure system is completed.

[0021] As a preferred solution of the cable structure system anti-overturning installation method provided by the present invention, it also includes designing the anti-overturning device. The method of designing the anti-overturning device includes the following steps:

[0022] R1. Model and analyze according to the most unfavorable construction condition for installing the secondary structure on the cable group. Among them, the connections between the secondary structure and the cable group are analyzed separately according to different connection stiffnesses, and the mapping relationships between the deformation forms of the cable group, the connection internal forces and the connection stiffnesses under each connection stiffness are obtained.

[0023] R2. Based on the mapping relationships in step R1, clarify the minimum connection stiffness and the maximum internal force between the secondary structure and the cable group under the acceptable deformation forms of the cable group.

[0024] R3. Design the structure of the anti-tilting device according to the maximum internal force.

[0025] R4. Conduct detailed modeling analysis of the nodes between the cable group and the secondary structure according to the anti-tilting device designed in step R3, and clarify the connection stiffness E between the secondary structure and the cable group after adding the anti-tilting device.

[0026] R5. If the connection stiffness E analyzed in step R4 is greater than or equal to the minimum stiffness requirement, the design is completed; if the connection stiffness E is less than the minimum stiffness requirement, strengthen the anti-tilting device, and repeat steps R4 and R5 for analysis and verification until the minimum stiffness requirement is met.

[0027] In a second aspect, a cable structure system anti-tilting device is provided, which is applied to the cable structure system anti-overturning installation method as described above. The anti-tilting device includes a rigid rod, and the extending direction of the rigid rod is the same as that of the secondary structure. One end of the rigid rod is connected to the secondary structure, and the other end of the rigid rod is connected to the cable clamp.

[0028] As a preferred solution of the cable structure system anti-tilting device provided by the present invention, a first connecting member is provided on the secondary structure, a second connecting member is provided on the cable clamp, one end of the rigid rod is detachably connected to the first connecting member, and the other end of the rigid rod is detachably connected to the second connecting member.

[0029] As a preferred solution of the cable structure system anti-tilting device provided by the present invention, the anti-tilting device further includes a first bolt and a second bolt. The rigid rod is connected to the first connecting member through the first bolt, and the rigid rod is connected to the second connecting member through the second bolt. The axis of the first bolt is parallel to the secondary structure, the axis of the second bolt is perpendicular to the secondary structure, and the second bolt is a friction-type high-strength bolt.

[0030] As a preferred solution of the cable structure system anti-tilting device provided by the present invention, a first strip-shaped hole is formed in the rigid rod along its length direction, and the second bolt penetrates through the second connecting member and the first strip-shaped hole.

[0031] As a preferred solution of the cable structure system anti-tilt device provided by the present invention, a second strip hole is provided on the second connecting member, the extension direction of the second strip hole is perpendicular to the extension direction of the first strip hole, and the second bolt passes through the first strip hole and the second strip hole.

[0032] Beneficial effects of the present invention:

[0033] The present invention provides a method for anti-overturning installation of a cable structure system. After a secondary structure is installed on a cable assembly, an anti-overturning device is installed at a corresponding position on the secondary structure. The anti-overturning device is connected between the secondary structure and the cable clamp of the cable assembly. This device allows the secondary structure to counteract and dissipate the eccentric bending moment of the cable assembly, thereby limiting the lateral deformation of the cable assembly. Specifically, the anti-overturning device balances the eccentric bending moment generated by the cable assembly, preventing severe deflection and deformation of the cable assembly. Since the anti-overturning device is installed at the corresponding position after each secondary structure is installed, cable assembly deflection is prevented without strict control over the installation sequence of the secondary structures or strict symmetrical lifting. This reduces the requirements for material supply, component stacking, and lifting equipment layout and management. While effectively controlling cable assembly torsional deformation, it also allows for flexible installation of the secondary structures, improving construction efficiency. Furthermore, compared to the prior art balancing method that requires the use of hanging counterweights, the anti-overturning installation method provided by the present invention does not require the use of additional counterweights, reducing construction costs while avoiding the construction risks associated with hanging counterweights at high altitudes.

[0034] The present invention also provides an anti-tilt device, connected between the secondary structure and the cable clamp, that effectively balances the deflection load on the cable assembly caused by the installation of the secondary structure. The anti-tilt device is compact, easy to install and disassemble, and can be used reproducibly, keeping construction costs manageable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flow chart of the anti-overturning installation method of the cable structure system provided by a specific embodiment of the present invention;

[0036] Figure 2 Schematic diagram of the connection between the structure and the cable assembly when no anti-tilt device is installed;

[0037] Figure 3 This is a schematic diagram of the deformation of the cable group when the anti-tilt device is not installed on the secondary structure;

[0038] Figure 4 This is a force analysis diagram of the cable group when the anti-tilt device is not installed on the structure;

[0039] Figure 5 Schematic diagram of the connection between the anti-tilt device and the cable assembly after installation on the structure;

[0040] Figure 6 Schematic diagram of the deformation of the cable group after the anti-tilt device is installed on this structure;

[0041] Figure 7 The force analysis diagram of the cable group after installing the anti-tilting device on this structure;

[0042] Figure 8 The first construction process diagram of the cable structure system provided by the specific implementation manner of the present invention;

[0043] Figure 9 The second construction process diagram of the cable structure system provided by the specific implementation manner of the present invention;

[0044] Figure 10 The third construction process of the cable structure system provided by the specific implementation manner of the present invention Figure 1 (Top view);

[0045] Figure 11 The third construction process of the cable structure system provided by the specific implementation manner of the present invention Figure 2 (Axonometric view);

[0046] Figure 12 Is Figure 11 The partial enlarged view at point A in;

[0047] Figure 13 The fourth construction process diagram of the cable structure system provided by the specific implementation manner of the present invention;

[0048] Figure 14 Is Figure 13 The partial enlarged view at point B in;

[0049] Figure 15 The fifth construction process diagram of the cable structure system provided by the specific implementation manner of the present invention;

[0050] Figure 16 The sixth construction process of the cable structure system provided by the specific implementation manner of the present invention Figure 1 (Top view);

[0051] Figure 17 The sixth construction process of the cable structure system provided by the specific implementation manner of the present invention Figure 2 (Axonometric view);

[0052] Figure 18 The seventh construction process diagram of the cable structure system provided by the specific implementation manner of the present invention;

[0053] Figure 19 The structural schematic diagram of the anti-tilting device provided by the specific implementation manner of the present invention;

[0054] Figure 20 Is Figure 19 The partial enlarged view at point C in.

[0055] In the figure:

[0056] 1. Cable group; 2. End structure; 3. Lifting equipment; 4. Secondary structure; 5. Anti-tipping device; 6. Side span structure;

[0057] 11. Cable; 12. Cable clamp; 121. Second connecting piece; 1211. Second strip-shaped hole;

[0058] 31. Hook;

[0059] 41. First connecting piece;

[0060] 51. Rigid rod; 52. First bolt; 53. Second bolt;

[0061] 511. First strip-shaped hole. Detailed implementation mode

[0062] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0063] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0064] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0065] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0066] As Figure 1 shown, this embodiment provides an anti-overturning installation method for a cable structure system, including the following steps:

[0067] S1. Assemble cable group 1. Cable group 1 includes multiple stay cables 11, and the multiple stay cables 11 are connected into a whole through cable clips 12.

[0068] S2. Conduct overall traction, tensioning, and pinning of cable group 1 to complete the installation between cable group 1 and the end structure 2.

[0069] S3. Determine the installation sequence of the secondary structure 4 according to the layout of the lifting equipment 3 and the arrival situation of the secondary structure 4, and hoist the secondary structure 4 through the lifting equipment 3 according to the installation sequence. Both ends of the secondary structure 4 are respectively connected to the cable clips 12 on the adjacent cable groups 1.

[0070] S4. After the secondary structure 4 is installed in place, install the anti-tilting device 5. The anti-tilting device 5 is connected between the secondary structure 4 and the cable clip 12, so that the eccentric moment generated on the cable group 1 is resisted and consumed by the secondary structure 4, thereby restricting the lateral tilt deformation of the cable group 1.

[0071] S5. Repeat step S3 and step S4 to install the remaining secondary structures 4.

[0072] In the anti-overturning installation method for the cable structure system provided by this embodiment, after the secondary structure 4 is installed on the cable group 1, the anti-tilting device 5 is installed at the corresponding position of the secondary structure 4. The anti-tilting device 5 is connected between the secondary structure 4 and the cable clip 12 of the cable group 1 to balance the eccentric moment generated on the cable group 1 and avoid serious deflection deformation of the cable group 1. Since each time a secondary structure 4 is installed, the deflection of the cable group 1 can be avoided by installing the anti-tilting device 5 at the corresponding position, there is no need to strictly control the installation sequence of the secondary structure 4 and no need for strictly symmetric hoisting, which reduces the requirements for material supply, component stacking, layout and management control of the lifting equipment 3, etc. While effectively controlling the torsional deformation of the cable group 1, the installation of the secondary structure 4 becomes more flexible and the construction efficiency is improved. Moreover, compared with the existing balance method of hanging counterweights, the anti-overturning installation method provided by the present invention does not require additional hanging of counterweights, which reduces the construction cost and can avoid the construction risks brought by the high-altitude suspension of counterweights.

[0073] As Figure 2As shown in the figure, it is a schematic diagram of the secondary structure 4 without the anti-tilting device 5 installed. The secondary structure 4 is hinged to the cable clip 12 of the cable group 1. Since the cable 11 is a flexible structure, after the secondary structure 4 is installed between two adjacent cable groups 1, the cable group 1 will produce deflection deformation. As Figure 3 shown, it is a schematic diagram of the deflection deformation of the cable group 1 when the anti-tilting device 5 is not installed on the secondary structure 4. Refer to Figure 3 and Figure 4 , the gravity of the secondary structure 4 is G, which is distributed to the two cable groups 1. The loads received at the connection positions of the two side cable clips 12 to the secondary structure 4 are G / 2. This load is an eccentric vertical load. When the cable group 1 bears the action of this eccentric vertical load, in order to balance the eccentric moment generated by the eccentric vertical load, the cable 11 far from the eccentric vertical load will bear a vertically upward acting force (the force at the position where the cable clip 12 is connected to this cable 11 is R2), while the cable 11 close to the eccentric vertical load will bear a larger vertically downward acting force (the force at the position where the cable clip 12 is connected to this cable 11 is R1 = R2 + G / 2). The up-and-down acting forces cause the two cables 11 in the cable group 1 to deform upward and downward respectively, thereby causing the cable group 1 to produce deflection deformation, and the secondary structure 4 cannot exert a force on the cable group 1 that can overcome the eccentric load. If the secondary structure 4 is continuously installed between the two adjacent cable groups 1, it will lead to the aggravation of the deflection. Furthermore, the continuous accumulation and development of the deflection will cause the cable group 1 to overturn, resulting in serious construction accidents.

[0074] As Figure 5 shown, it is a schematic diagram of the secondary structure 4 after the anti-tilting device 5 is installed. The setting of the anti-tilting device 5, together with the inherent connection of the secondary structure 4, enables the secondary structure 4 and the cable clip 12 to have the performance of bearing bending, thereby balancing the eccentric load moment received by the cable group 1. As Figure 6 shown, after the anti-tilting device 5 is installed, no obvious deflection deformation occurs between the two adjacent cable groups 1. As Figure 7 shown, after adding the anti-tilting device 5, it can bear the eccentric moment M0 = G / 4(e1 + e2) generated by the cable group 1 due to the installation of the secondary structure 4 to limit the deflection deformation of the cable group 1. That is, by adding the anti-tilting device 5, the original hinged connection between the secondary structure 4 and the cable clip 12 becomes a connection structure that can bear the bending moment. The eccentric moment generated by the eccentric load is jointly borne by the anti-tilting device 5 and the secondary structure 4, and each cable 11 of the cable group 1 can evenly share the vertical force transmitted from the secondary structure 4 (the forces at the positions where the cable clip 12 is connected to the two cables 11 are both G / 4), and the deflection deformation of the cable group 1 is limited by the anti-tilting device 5.

[0075] Specifically, in step S1, the operator assembles the cable group 1 on the ground, fixes and connects multiple cables 11 in the cable group 1 into one body through the cable clips 12. After completing the assembly of the cable group 1, the next process S2 is carried out.

[0076] In step S2, the cable group 1 is lifted into the air by a dedicated traction device and a tensioning device, and the tensioning operation of the cable group 1 is carried out. After the cable group 1 is tensioned to the proper shape and the cable force meets the requirements, the pin holes at the cable head of the stay cable 11 are connected to the pin holes on the ear plate of the end structure 2 through a pin shaft, and thus the installation of the cable group 1 is completed. As Figure 8 shown, the top view and the axonometric view after the installation of two adjacent cable groups 1 are presented.

[0077] Before installing the cable group 1, the side span structure 6 can be installed first. As Figure 8 shown, the side span structures 6 on both sides have been installed.

[0078] As Figure 9 shown, it is the installation process diagram of the first secondary structure 4. In step S3, according to the layout of the lifting equipment 3 and the arrival situation of the secondary structure 4, the installation sequence of the secondary structure 4 is determined, and the secondary structure 4 is hoisted by the lifting equipment 3 according to the installation sequence. The operators connect the two ends of the secondary structure 4 to the cable clips 12 on two adjacent cable groups 1 respectively. Specifically, the connection between the secondary structure 4 and the cable clip 12 is a hinge connection. At this time, the cable group 1 is deflected and deformed under the eccentric vertical load.

[0079] As Figure 10 shown, it is the installation process diagram of the anti-tilting device 5. In step S4, the anti-tilting device 5 is installed between the two ends of the secondary structure 4 and the corresponding cable clips 12. The anti-tilting device 5 is connected to both the secondary structure 4 and the cable clip 12 to balance the eccentric loads borne by the two cable groups 1.

[0080] Furthermore, referring to Figure 11 and Figure 12 , in step S4, the lifting equipment 3 hoists the secondary structure 4 through the hook 31. After the secondary structure 4 is installed in place and before the hook 31 of the lifting equipment 3 is unhooked, the anti-tilting device 5 is installed to ensure the safety during the installation of the anti-tilting device 5. After the anti-tilting device 5 is installed, the lifting equipment 3 drives its hook 31 to unhook to carry out the hoisting of the next secondary structure 4. As Figure 13 and Figure 14 shown, after the anti-tilting device 5 is installed, the hook 31 is separated from the secondary structure 4 and enters the next process. The lifting equipment 3 can be a crane.

[0081] As Figure 15 shown, after installing multiple secondary structures 4 between a pair of cable groups 1 (two adjacent cable groups 1) and installing the anti-tilting devices 5 on all the secondary structures 4, the installation work of the secondary structures 4 between the adjacent pair of cable groups 1 is carried out. The multiple secondary structures 4 in this pair of cable groups 1 are aligned one by one with the multiple secondary structures 4 in the previous pair of cable groups 1, and the two aligned secondary structures 4 are hinged to the same cable clip 12, that is, the secondary structures 4 are symmetrically installed on both sides of this cable clip 12.

[0082] The cable structure system anti-overturning installation method provided in this embodiment further includes the following steps:

[0083] S6. After the secondary structures 4 on both sides of the same cable clamp 12 are installed in place, the anti-tilt device 5 connected to the cable clamp 12 on the secondary structure 4 installed first is removed. No anti-tilt device 5 is required between the secondary structure 4 installed later and the cable clamp 12.

[0084] See also Figure 15 The lower left substructure 4 in the figure is a newly installed substructure 4. The anti-tilt device 5 does not need to be installed on the end closest to the corresponding substructure 4. This is because the eccentric loads generated by the installation of the substructure 4 on both sides of the cable clamp 12 are balanced. In other words, after the two symmetrical substructures 4 on the same cable clamp 12 are installed, the anti-tilt device 5 is only installed on the side away from each other, eliminating the need to install anti-tilt devices 5 on both ends of each substructure 4, effectively improving construction efficiency.

[0085] like Figure 16 and Figure 17 As shown, the secondary structure 4 on the middle pair of cable groups 1 or two pairs of cable groups 1 can be constructed first. After the construction is completed, the secondary structure 4 can be constructed simultaneously from the middle to the side span structures 6 on both sides.

[0086] Further, see Figure 16 and Figure 17 After the construction of the secondary structure 4 on the two pairs of cable groups 1 in the middle is completed, the secondary structure 4 on one side is constructed from left to right ( Figure 16 The lower row of substructures 4), the other side of the substructure 4 from right to left in turn ( Figure 16 The top-ranked structure 4).

[0087] like Figure 16 and Figure 17 As shown, in the secondary structures 4 installed in pairs, the ends close to each other do not need to be installed with the anti-tilt device 5.

[0088] Specifically, after step S6, the method further includes:

[0089] S7, replacing the secondary structure 4 or decorative parts at the location where the anti-tilt device 5 has been removed;

[0090] S8. After all the secondary structures 4 are installed, all the remaining anti-tilt devices 5 are removed, and the filling work of all the remaining secondary structures 4 or decorative parts is completed. The overall installation of the cable structure system is completed.

[0091] like Figure 18 , which are a top view and an axonometric view of the cable structure system formed after all the secondary structures 4 are installed.

[0092] The anti-overturning installation method for the cable structure system provided in this embodiment further includes designing the anti-overturning device 5. The method for designing the anti-overturning device 5 includes the following steps:

[0093] R1. Conduct a modeling analysis based on the most unfavorable construction condition of installing the secondary structure 4 on the cable group 1. Among them, the connections between the secondary structure 4 and the cable group 1 are analyzed separately according to different connection stiffnesses, and the mapping relationships between the deformation forms of the cable group 1, the connection internal forces and the connection stiffnesses under each connection stiffness are obtained.

[0094] The mapping relationships in step R1 are used to reflect the relationships between the deformation forms of the cable group 1 and the connection stiffness, and between the connection internal forces between the secondary structure 4 and the cable group 1 and the connection stiffness.

[0095] R2. Based on the mapping relationships in step R1, clarify the minimum connection stiffness and the maximum internal force between the secondary structure 4 and the cable group 1 under the acceptable deformation form of the cable group 1.

[0096] The acceptable deformation form of the cable group 1 can be understood as the allowable deformation amount of the cable group 1 in the design.

[0097] R3. Conduct a structural design of the anti-overturning device 5 based on the maximum internal force;

[0098] R4. Conduct a detailed modeling analysis of the nodes between the cable group 1 and the secondary structure 4 according to the anti-overturning device 5 designed in step R3, and clarify the connection stiffness E between the secondary structure 4 and the cable group 1 after adding the anti-overturning device 5;

[0099] R5. If the connection stiffness E analyzed in step R4 is greater than or equal to the minimum stiffness requirement, the design is completed; if the connection stiffness E is less than the minimum stiffness requirement, strengthen the anti-overturning device 5, and repeat steps R4 and R5 for analysis and verification until the minimum stiffness requirement is met.

[0100] Through the above steps, the design parameters of the anti-overturning device 5 that meet the requirements can be obtained. According to these design parameters, construction drawings of the anti-overturning device 5 are drawn, and then an entity that meets the requirements is manufactured according to the drawings.

[0101] As Figure 19 shown, this embodiment also provides an anti-overturning device for a cable structure system, which is applied to the anti-overturning installation method for the cable structure system as described above. The anti-overturning device 5 includes a rigid rod 51, and the rigid rod 51 has the performance of bearing bending. The extending direction of the rigid rod 51 is consistent with the extending direction of the secondary structure 4. One end of the rigid rod 51 is connected to the secondary structure 4, and the other end of the rigid rod 51 is connected to the cable clip 12.

[0102] The anti-tilt device 5 provided in this embodiment is connected between the secondary structure 4 and the cable clamp 12, effectively balancing the deflection load on the cable assembly 1 caused by the installation of the secondary structure 4. The anti-tilt device 5 is compact, easy to install and disassemble, and can be used repeatedly, keeping construction costs manageable.

[0103] That is, by adding the anti-tilt device 5, the original hinged connection between the secondary structure 4 and the cable clamp 12 is transformed into a connection structure that can withstand bending moments. The eccentric bending moment generated by the eccentric load is thus borne jointly by the anti-tilt device 5 and the secondary structure 4, while the cables 11 of the cable group 1 can evenly share the vertical force transmitted from the secondary structure 4. The deflection and deformation of the cable group 1 are limited by the anti-tilt device 5.

[0104] See also Figure 19 The secondary structure 4 is provided with a first connecting member 41, and the cable clamp 12 is provided with a second connecting member 121. One end of the rigid rod 51 is detachably connected to the first connecting member 41, and the other end of the rigid rod 51 is detachably connected to the second connecting member 121. The first connecting member 41 on the secondary structure 4 and the second connecting member 121 on the cable clamp 12 facilitate the installation of the rigid rod 51. The rigid rod 51 can be detachably connected to the secondary structure 4 and the cable clamp 12, making it easy to reuse.

[0105] Furthermore, the rigid rod 51 is connected to the first connector 41 via a first bolt 52, and the rigid rod 51 is connected to the second connector 121 via a second bolt 53. The axis of the first bolt 52 is parallel to the secondary structure 4, while the axis of the second bolt 53 is perpendicular to the secondary structure 4. The first bolt 52 is subject to less stress and can be a conventional bolt. The second bolt 53 is preferably a friction-type high-strength bolt because it is subject to shear forces.

[0106] See also Figure 19 and Figure 20 To facilitate removal of the rigid rod 51 while it is under stress, a first strip-shaped hole 511 is formed along its length, and a second bolt 53 extends through the second connector 121 and the first strip-shaped hole 511. During the stress phase, the rigid rod 51 is subjected to frictional force transmission through the friction-type high-strength bolt. When the rigid rod 51 needs to be removed, as the preload of the friction-type high-strength bolt is released, the friction-type high-strength bolt slightly slides within the first strip-shaped hole 511, dissipating the internal force of the rigid rod 51, making the removal operation easy and non-destructive.

[0107] Further, see Figure 20, a second elongated hole 1211 is provided on the second connecting member 121, and the extending direction of the second elongated hole 1211 is perpendicular to the extending direction of the first elongated hole 511. A second bolt 53 passes through the first elongated hole 511 and the second elongated hole 1211 to connect the rigid rod 51 and the second connecting member 121. The arrangements of the second elongated hole 1211 and the first elongated hole 511 make it more convenient to insert the second bolt 53, avoiding the situation where the two holes are not aligned and cannot be installed.

[0108] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Anti-overturning installation method for cable structure system, characterized in that, It includes the following steps: S1. Assemble the cable group (1), where the cable group (1) includes multiple stay cables (11), and the multiple stay cables (11) are connected into a whole through cable clamps (12); S2. Conduct overall traction, tensioning, and pinning of the cable group (1) to complete the installation between the cable group (1) and the end structure (2); S3. Determine the installation sequence of the secondary structure (4) according to the layout of the lifting equipment (3) and the arrival situation of the secondary structure (4), and hoist the secondary structure (4) through the lifting equipment (3) according to the installation sequence. The two ends of the secondary structure (4) are respectively connected to the cable clamps (12) on the adjacent cable groups (1); S4. After the secondary structure (4) is installed in place, install the anti-tilting device (5). The anti-tilting device (5) is connected to the secondary structure (4) and the cable clamp (12) so that the eccentric load moment of the cable group (1) is resisted and consumed by the secondary structure (4), thereby restricting the lateral tilting deformation of the cable group (1); S5. Repeat steps S3 and S4 to install the remaining secondary structures (4); It also includes designing the anti-tilting device (5). The method for designing the anti-tilting device (5) includes the following steps: R1. Conduct modeling analysis based on the most unfavorable construction condition for installing the secondary structure (4) on the cable group (1), where the connection between the secondary structure (4) and the cable group (1) is analyzed separately according to different connection stiffnesses to obtain the mapping relationship between the deformation form of the cable group (1), the connection internal force, and the connection stiffness under each connection stiffness; R2. Based on the mapping relationship in step R1, clarify the minimum connection stiffness and the maximum internal force between the secondary structure (4) and the cable group (1) under the acceptable deformation form of the cable group (1); R3. Conduct the structural design of the anti-tilting device (5) based on the maximum internal force; R4. Conduct detailed modeling analysis of the nodes between the cable group (1) and the secondary structure (4) according to the anti-tilting device (5) designed in step R3 to clarify the connection stiffness E between the secondary structure (4) and the cable group (1) after adding the anti-tilting device (5); R5. If the connection stiffness E analyzed in step R4 is greater than or equal to the minimum stiffness requirement, the design is completed; if the connection stiffness E is less than the minimum stiffness requirement, strengthen the anti-tilting device (5), and repeat steps R4 and R5 for analysis and verification until the minimum stiffness requirement is met.

2. The anti-overturning installation method for the cable structure system according to claim 1, characterized in that In step S4, the lifting equipment (3) hoists the secondary structure (4) through the hook (31). After the secondary structure (4) is installed in place and before the hook (31) of the lifting equipment (3) is unhooked, install the anti-tilting device (5); After the anti-tilting device (5) is installed, the lifting equipment (3) drives its hook (31) to unhook.

3. The anti-overturning installation method of the cable structure system according to claim 1, characterized in that It also includes the following steps: S6. After the sub-structures (4) symmetrically arranged on both sides of the same cable clip (12) are all installed in place, remove the anti-tilting device (5) connected to the cable clip (12) on the previously installed sub-structure (4). There is no need to install the anti-tilting device (5) between the later installed sub-structure (4) and the cable clip (12).

4. The anti-overturning installation method of the cable structure system according to claim 3, characterized in that, After step S6, it further includes: S7. Make up for the sub-structure (4) or decorative parts at the part where the anti-tilting device (5) has been removed; S8. After all the sub-structures (4) are installed, remove all the remaining anti-tilting devices (5), complete the work of making up for all the remaining sub-structures (4) or decorative parts, and the overall installation of the cable structure system is completed.

5. Anti-tilting device for cable structure system, characterized in that, Applied to the anti-overturning installation method of the cable structure system as described in any one of claims 1-4, the anti-tilting device (5) includes a rigid rod (51). The extending direction of the rigid rod (51) is the same as that of the sub-structure (4). One end of the rigid rod (51) is connected to the sub-structure (4), and the other end of the rigid rod (51) is connected to the cable clip (12).

6. The anti-tilting device for the cable structure system according to claim 5, characterized in that A first connecting member (41) is provided on the sub-structure (4), and a second connecting member (121) is provided on the cable clip (12). One end of the rigid rod (51) is detachably connected to the first connecting member (41), and the other end of the rigid rod (51) is detachably connected to the second connecting member (121).

7. The anti-tilting device for cable structure system according to claim 6, characterized in that, The anti-tilting device (5) further includes a first bolt (52) and a second bolt (53). The rigid rod (51) is connected to the first connecting member (41) through the first bolt (52), and the rigid rod (51) is connected to the second connecting member (121) through the second bolt (53). The axis of the first bolt (52) is parallel to the sub-structure (4), and the axis of the second bolt (53) is perpendicular to the sub-structure (4). The second bolt (53) is a friction-type high-strength bolt.

8. The anti-tilting device for cable structure system according to claim 7, characterized in that, A first strip-shaped hole (511) is formed along the length direction of the rigid rod (51), and the second bolt (53) penetrates through the second connecting member (121) and the first strip-shaped hole (511).

9. The anti-tilting device for the cable structure system according to claim 8, characterized in that, A second strip-shaped hole (1211) is provided on the second connecting member (121). The extending direction of the second strip-shaped hole (1211) is perpendicular to the extending direction of the first strip-shaped hole (511). The second bolt (53) penetrates through the first strip-shaped hole (511) and the second strip-shaped hole (1211).

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