Construction method of hyperbolic super-long fusiform blade beam space structure

Abstract

The invention discloses a construction method of a hyperbolic super-long fusiform blade beam space structure. The construction method comprises the steps that a, the two ends of a beam body are hoisted and installed on a main body structure; b, mounting traction components on two opposite sides of the upper part of the main body structure respectively; c, the traction cables of the two traction assemblies are connected to tensioning tools at the two ends of the tensioning cable correspondingly; d, a traction cable of the traction assembly is wound, and tensioning tools at the two ends of the traction cable are lifted to the main body structure; e, the tensioning cable is tensioned in one direction from one end of the beam body to the other end of the beam body through a tensioning tool; f, the step d and the step e are repeated, and meanwhile the tensioning cables of the multi-truss hyperbolic super-long fusiform blade beam are installed in the direction from the two opposite ends of the main body structure to the middle of the main body structure; and g, connecting rod pieces between the multiple hyperbolic super-long fusiform blade beams. The problems that when a beam string structure system is adopted in a large-span space structure and a conventional construction method is used, the tensioning efficiency is low, and in-site hoisting is difficult are solved.

Description

Technical Field

[0001] This invention relates to the field of tensioned beam construction technology, specifically to a construction method for a hyperbolic ultra-long spindle-shaped blade beam spatial structure. Background Technology

[0002] During the construction of the hyperbolic ultra-long spindle-shaped blade beam spatial structure, the rigid connection between the upper beam and the lower struts creates a complex stress distribution due to the coupling of cable forces, beam internal forces, and strut bending moments during cable tensioning. Traditional construction methods lack simulation theories and guidance on tensioning sequences for such rigid connection systems. Furthermore, large equipment or complex tooling is typically used for bidirectional tensioning on-site. However, this method often results in long construction periods and high costs due to insufficient theoretical basis and cumbersome processes. Additionally, the complex internal space of the structure prevents the access of large hoisting equipment, making cable installation difficult and posing significant challenges to the project's safety, quality, and schedule. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a construction method for a hyperbolic ultra-long spindle-shaped blade beam spatial structure is provided to solve the problems of low tensioning efficiency and difficulty in on-site hoisting when using conventional construction methods for large-span spatial structures with tensioned beam systems.

[0004] To achieve the above objectives, a construction method for a hyperbolic ultra-long spindle-shaped blade beam spatial structure is provided, comprising the following steps: a. Hoist the beam body of multiple hyperbolic ultra-long spindle-shaped blade beams and install both ends of the beam body on the main structure, so that multiple beam bodies are arranged along the length direction of the main structure; b. Install traction components on opposite sides of the upper part of the main structure; c. Connect the traction cables of the two traction components to the tensioning fixtures at both ends of the tension cable; d. The traction cable of the traction assembly is lifted onto the main structure by tensioning fixtures at both ends of the tension cable, so that the middle part of the tension cable is supported by the struts at the bottom of the beam body; e. Using a tensioning fixture, the tension cable is unidirectionally tensioned from one end of the beam body to the other end, so that the tension cable and the beam body form the hyperbolic ultra-long spindle-shaped blade beam. f. Repeat steps d and e, and simultaneously install the tension cables of the multiple hyperbolic ultra-long spindle-shaped blade beams from opposite ends of the main structure toward the middle of the main structure; g. Connecting members are used to connect the multiple hyperbolic ultra-long spindle-shaped blade beams to form a spatial structure of hyperbolic ultra-long spindle-shaped blade beams.

[0005] Furthermore, the traction assembly includes a winch, which is mounted on the upper part of the main structure, and one end of the traction cable is connected to the drum of the winch.

[0006] Furthermore, a fixed pulley is installed on the top of the main structure, the winch is installed on the outside of the main structure, and the middle part of the traction cable is wound around the fixed pulley.

[0007] Furthermore, when performing the step of tensioning the tension cable from one end of the beam body to the other end of the beam body using a tensioning fixture, the tension cable is tensioned in stages.

[0008] The beneficial effects of this invention are that the construction method for the hyperbolic ultra-long spindle-shaped blade beam spatial structure solves the difficulty of lacking theoretical guidance in the construction of rigid connection systems with cable-stayed cables, ensures the final quality of the structure, and saves on rework and project delays that may be caused by improper construction. The construction method for the hyperbolic ultra-long spindle-shaped blade beam spatial structure of this invention features scientific simulation guidance, efficient tensioning process, flexible hoisting scheme, safety, stability, reliability, and significant economic benefits. Attached Figure Description

[0009] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the construction method of the hyperbolic ultra-long spindle-shaped blade beam spatial structure according to an embodiment of the present invention.

[0010] Figure 2 This is a schematic diagram of the end structure of the beam body according to an embodiment of the present invention.

[0011] Figure 3 This is a schematic diagram of the installation state of the tensioning fixture according to an embodiment of the present invention.

[0012] Figure 4 This is a schematic diagram of the tensioning sequence of the tensioning cable according to an embodiment of the present invention.

[0013] Figure label: Hyperbolic ultra-long spindle-shaped blade beam spatial structure 1, hyperbolic ultra-long spindle-shaped blade beam 11, beam body 111, strut 112, tension cable 113, connecting rod 12; Main structure 2, roof beam 21; Traction assembly 3, traction cable 31, fixed pulley 32; Tensioning fixture 4, jack 41, steel strand 42. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Reference Figures 1 to 4 As shown, this invention provides a construction method for a hyperbolic ultra-long spindle-shaped blade beam spatial structure, comprising the following steps: a. Hoist the beam body 111 of multiple hyperbolic ultra-long spindle-shaped blade beams 11 and install both ends of the beam body 111 on the main structure 2, so that multiple beam bodies 111 are arranged along the length direction of the main structure 2.

[0017] The hyperbolic ultra-long spindle-shaped blade beam 11 includes a beam body, struts, and tension cables. The struts are installed at the bottom of the beam body. The upper end of the struts is fixedly connected to the beam body. The lower end of the struts is slidably connected to the tension cables.

[0018] In this embodiment, a roof beam is formed at the top of the main structure. The two ends of the beam are installed on the roof beams on opposite sides of the main structure.

[0019] b. Install traction components 3 on opposite sides of the upper part of the main structure 2.

[0020] The traction assembly 3 includes a winch and a traction cable. The winch is mounted on the upper part of the main structure 2. One end of the traction cable 31 is connected to the drum of the winch.

[0021] A fixed pulley 32 is installed on the top of the main structure 2. A winch is installed on the outside of the main structure 2. The middle part of the traction cable 31 is wound around the fixed pulley 32.

[0022] c. Connect the traction cables 31 of the two traction components 3 to the tensioning fixtures 4 at both ends of the tension cable 113.

[0023] The other end of the traction cable is connected to the tensioning fixture.

[0024] d. The traction cable 31 of the winding traction assembly 3 is lifted onto the main structure 2 by the tensioning fixtures 4 at both ends of the tension cable 113, so that the middle part of the tension cable 113 is supported by the strut 112 at the lower part of the beam body 111.

[0025] e. Using a tensioning fixture 4, tension the beam body 111 unidirectionally from one end to the other end (e.g., ... Figure 4The hollow arrow in the middle) tension cable 113, so that the tension cable 113 and the beam body 111 form a hyperbolic ultra-long spindle-shaped blade beam 11.

[0026] In this embodiment, the unidirectional tensioning method and the tensioning sequence from both sides to the middle are determined through finite element construction simulation analysis, and tensioning is carried out using steel strand tensioning fixtures.

[0027] When performing the step of tensioning the tension cable 113 from one end of the beam body 111 to the other end of the beam body 111 using a tensioning fixture 4, the tension cable 113 is tensioned in stages.

[0028] The tensioning fixture consists of a jack, a limit switch, a tool anchor, and steel strands. The tool anchor is connected to the piston rod of the jack.

[0029] Start the jacks, and the tool anchor clamps the steel strands, lifting them forward to perform unidirectional tensioning of the cable. If the cable force does not reach the target value for this stage, continue supplying oil to lift until the predetermined pressure is reached, thus achieving tensioning for this stage.

[0030] After the first stage of tensioning is completed, the jacks are returned to their original position, the tool anchor wedges are changed, and the above jacking process is repeated for the next stage of tensioning until all tension cables are tensioned symmetrically from both sides towards the center until they reach the design cable force. At this point, the working anchor is locked at the tensioning end, completing the establishment of the prestressed system.

[0031] Once the entire structure is completed, the tensioning equipment can be removed, and then the winch can be released.

[0032] f. Repeat steps d and e, simultaneously moving from opposite ends of the main structure 2 towards the middle of the main structure 2 (e.g., Figure 4 (The solid arrow in the middle) completes the installation of the tension cable 113 for the multi-beveled ultra-long spindle-shaped blade beam 11.

[0033] g. Connecting rods 12 between multiple hyperbolic ultra-long spindle-shaped blade beams 11 to form a hyperbolic ultra-long spindle-shaped blade beam spatial structure 1.

[0034] The construction method of the hyperbolic ultra-long spindle-shaped blade beam spatial structure of the present invention adopts a combination of construction simulation and unidirectional tensioning, which solves the problems of lack of theoretical guidance and construction difficulties of such complex structures.

[0035] The construction method of the hyperbolic ultra-long spindle-shaped blade beam spatial structure of the present invention determines the unidirectional tensioning sequence from both sides to the middle through finite element construction simulation analysis, and tensioning cables are implemented using tensioning fixtures. The tensioning cables are then hoisted on-site using traction components. This tensioning method, which combines simulation and tensioning, achieves precise application of cable forces in a rigid connection system, solving the problem of the lack of theoretical basis for the tensioning process.

[0036] The upper end of the strut is rigidly connected to the beam body, while the lower end is slidably connected to the tension cable. By activating the jacks to pull the steel strands, the tension cable is tensioned in one direction, achieving efficient establishment of prestress in the structure. This solves the problems of complexity, long construction period, and high cost associated with traditional bidirectional tensioning processes.

[0037] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A construction method for a hyperbolic ultra-long spindle-shaped blade beam spatial structure, characterized in that, Includes the following steps: a. Hoist the beam body of multiple hyperbolic ultra-long spindle-shaped blade beams and install both ends of the beam body on the main structure, so that multiple beam bodies are arranged along the length direction of the main structure; b. Install traction components on opposite sides of the upper part of the main structure; c. Connect the traction cables of the two traction components to the tensioning fixtures at both ends of the tension cable; d. The traction cable of the traction assembly is lifted onto the main structure by tensioning fixtures at both ends of the tension cable, so that the middle part of the tension cable is supported by the struts at the bottom of the beam body; e. Using a tensioning fixture, the tension cable is unidirectionally tensioned from one end of the beam body to the other end, so that the tension cable and the beam body form the hyperbolic ultra-long spindle-shaped blade beam. f. Repeat steps d and e, and simultaneously install the tension cables of the multiple hyperbolic ultra-long spindle-shaped blade beams from opposite ends of the main structure toward the middle of the main structure; g. Connecting members are used to connect the multiple hyperbolic ultra-long spindle-shaped blade beams to form a spatial structure of hyperbolic ultra-long spindle-shaped blade beams.

2. The construction method of the hyperbolic ultra-long spindle-shaped blade beam spatial structure according to claim 1, characterized in that, The traction assembly includes a winch, which is installed on the upper part of the main structure, and one end of the traction cable is connected to the drum of the winch.

3. The construction method of the hyperbolic ultra-long spindle-shaped blade beam spatial structure according to claim 2, characterized in that, A fixed pulley is installed on the top of the main structure, the winch is installed on the outside of the main structure, and the middle part of the traction cable is wound around the fixed pulley.

4. The construction method of the hyperbolic ultra-long spindle-shaped blade beam spatial structure according to claim 1, characterized in that, When performing the step of tensioning the tension cable from one end of the beam body to the other end of the beam body using a tensioning fixture, the tension cable is tensioned in stages.

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