Method and device for acquiring cable force of buckle cable in concrete arch bridge construction and electronic equipment

Abstract

The invention relates to a concrete arch bridge construction buckle cable force obtaining method and device and electronic equipment, and belongs to the technical field of bridges, and the method comprises the steps that a finite element numerical model of a target concrete arch bridge is constructed; applying a ballasting load to a rotation side arch rib of the finite element numerical model rotation construction side arch ring to obtain a vertical deformation distance of a vault of the rotation side arch rib under the action of the ballasting load; target cable force of the buckle cable is obtained based on the vertical deformation distance, the target cable force is used for adjusting the height of the swivel construction side arch ring, and the height difference between the vault of the swivel construction side arch ring and the vault of the support construction side arch ring is the vertical deformation distance. According to the method, the vertical deformation distance of the vault of the rotation side arch rib under the ballasting load effect is obtained through finite element simulation, the height difference between the vaults of the arch rings on the two sides is the vertical deformation distance, and therefore the problem that due to the fact that the rigidity of the arch rings on the two sides is asymmetric, the closure section deforms when the closure section is subjected to the ballasting load is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and in particular to a method, device and electronic equipment for obtaining cable force during the construction of a concrete arch bridge. Background Art

[0002] Reinforced concrete arch structures have the advantages of beautiful form, strong span, clear force, and high rigidity. They are widely used in transportation and water conservancy projects for their excellent force-bearing performance and beautiful appearance. Traditional arch structure construction mostly adopts a symmetrical construction method, that is, before the construction of the joint section, the arch rings on both sides are constructed synchronously using the same construction method to ensure the symmetry and uniform force of the structure. At present, in the field of bridge engineering, the construction of arch structures has formed a series of relatively complete and mature construction processes, such as the cast-in-place method of brackets, the cable hoisting construction method, the tower cantilever construction method, the rotation construction method and other symmetrical construction methods.

[0003] In order to adapt to the requirements of complex terrain conditions and construction environment, asymmetric combined construction methods have gradually been introduced into the construction of large-span concrete arch structures. Among them, the combined construction method of using rotation construction on one side and bracket construction on the other side shows unique advantages in overcoming space limitations and construction difficulties.

[0004] However, this asymmetric combined construction method also brings new challenges: due to the different arch ring construction methods, the load and stiffness of the arch rings on both sides are significantly asymmetric, which will lead to inconsistency between the internal force and deformation during the construction of the joint section, thus affecting the construction quality of the joint section and the stability of the structure. Specifically, when the joint section is loaded, the cast-in-place side arch ring with greater stiffness has minimal deformation, while the rotating side arch ring with less stiffness has greater deformation, resulting in an uneven stress state. This asymmetric load and deformation will make it difficult to connect the joint mouth, thus affecting the overall stability of the structure, the construction quality of the joint section, and the line shape and internal force distribution after the bridge is completed. Summary of the invention

[0005] In view of this, it is necessary to provide a method, device and electronic equipment for obtaining cable tension in concrete arch bridge construction, so as to solve the problem in the prior art that load asymmetry exists on both sides of the arch rings during the construction process and the difference in arch ring stiffness leads to inconsistent internal force and deformation of the arch rings when closing, thereby affecting the construction quality of the closing section and the stability of the structure.

[0006] In order to solve the above problems, the present invention provides a method for obtaining cable force during construction of a concrete arch bridge, comprising: Constructing a finite element numerical model of a target reinforced concrete arch bridge, the target reinforced concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; Apply a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model, and obtain the vertical deformation distance of the arch top of the rotation side arch rib under the action of the compressive load; The target cable force of the cable is obtained based on the vertical deformation distance, and the target cable force is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side and the arch top of the support construction side is the vertical deformation distance.

[0007] In a possible implementation manner, obtaining a target cable force based on the vertical deformation distance includes: Based on the gravity of the side arch ring of the rotating construction, determining the first initial force and the second initial force of the locking tension force; Obtain the pre-lift height of the side arch ring during rotation construction; Obtaining a first vertical displacement of the arch ring on the rotation construction side under the action of a first initial force; Obtaining a second vertical displacement of the arch ring on the rotation construction side under the action of a second initial force; Obtaining a displacement change of the dome under a unit cable force change based on the first vertical displacement, the second vertical displacement, the first initial force, and the second initial force; Determine the change value of the cable force based on the change amount of the arch crown displacement under the unit cable force change, the first vertical displacement and the pre-lift height; The target cable force is obtained based on the cable force change value and the first initial force.

[0008] In a possible implementation, obtaining the pre-lift height of the side arch ring during the rotation construction includes: The pre-lift height of the side arch ring of the rotation construction is obtained based on the vertical deformation distance.

[0009] In a possible implementation, obtaining the target cable force based on the cable force change value and the first initial force includes: The target cable force is obtained by adding the cable force change value to the first initial force.

[0010] In a possible implementation, the expression for the change in the displacement of the arch crown under the unit cable force change is:

[0011] In the formula, It represents the change of the arch displacement under the unit cable force change; represents the first vertical displacement; represents the second vertical displacement; represents the first initial force; Represents the second initial force.

[0012] In a possible implementation, the expression of the change value of the cable force is:

[0013] In the formula, Indicates the change value of the cable force; Indicates the pre-lift height; represents the first vertical displacement; It represents the change in the displacement of the arch crown under the unit change of the cable force.

[0014] On the other hand, the present invention also provides a cable force acquisition device for concrete arch bridge construction, comprising: A model building module, used to build a finite element numerical model of a target reinforced concrete arch bridge, the target concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; A vertical deformation distance acquisition module is used to apply a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model to obtain the vertical deformation distance of the arch top of the rotation side arch rib under the compressive load; The cable force acquisition module is used to obtain the target cable force of the cable based on the vertical deformation distance. The target cable force is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side arch ring and the arch top of the support construction side arch ring is the vertical deformation distance.

[0015] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the method for obtaining the cable force of a concrete arch bridge construction described in any one of the above implementations.

[0016] On the other hand, the present invention also provides a computer-readable storage medium for storing computer-readable programs or instructions, which, when executed by a processor, can implement the steps in a method for obtaining cable tension in concrete arch bridge construction described in any of the above-mentioned implementation methods.

[0017] The beneficial effects of the present invention are as follows: a method for obtaining the cable force of a concrete arch bridge construction provided by the present invention is used to construct a finite element numerical model of a target concrete arch bridge, the target concrete arch bridge includes a rotation construction side arch ring and a support construction side arch ring, a swivel side arch rib of the rotation construction side arch ring of the finite element numerical model is applied with a swivel side arch rib, a vertical deformation distance of the arch top of the rotation side arch rib under the swivel load is obtained, a vertical deformation distance is obtained to balance the internal forces of the arch rings on both sides, a target cable force of the cable is obtained based on the vertical deformation distance, and the target cable force is used to adjust the height of the rotation construction side arch ring, so that the height difference between the arch top of the rotation construction side arch ring and the arch top of the support construction side arch ring is the vertical deformation distance. The present invention obtains the vertical deformation distance of the arch top of the rotation side arch rib under the swivel load through finite element simulation, and makes the height difference between the arch tops of the arch rings on both sides the vertical deformation distance, thereby solving the problem that the deformation of the closing section when the swivel section is subjected to a swivel load during the construction stage due to the asymmetric stiffness of the arch rings on both sides affects the construction quality and structural stability of the closing section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A method flow chart of an embodiment of a method for obtaining cable force of a concrete arch bridge construction provided by the present invention; Figure 2 A schematic diagram of construction before rotation provided by an embodiment of the present invention; Figure 3 A schematic diagram of tensioning cables for the side arch ribs during rotation construction provided by an embodiment of the present invention; Figure 4 A flowchart of the installation of a rigid frame before and after welding provided by an embodiment of the present invention; Figure 5 A side view of the installation position of a rigid frame provided by an embodiment of the present invention; Figure 6 A top view of the installation position of a rigid frame provided by an embodiment of the present invention; Figure 7 A schematic diagram of the I-beam connection of the closed section after the rigid frame provided in one embodiment of the present invention is installed; Figure 8 A schematic flow chart of an embodiment of a device for obtaining cable force for concrete arch bridge construction provided by the present invention; Fig. 9 A schematic diagram of the structure of an embodiment of an electronic device provided by the present invention; Among them: 1-channel steel; 2-steel plate; 3-I-beam; 4-diagonal brace; 5-rotation side arch rib; 6-cast-in-place side arch rib of bracket; 7-rotation side cable; 8-rigid frame. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0020] Embodiment 1: The present invention provides a method, device, electronic equipment and medium for obtaining cable force during the construction of a concrete arch bridge, which are described below respectively.

[0021] Figure 1 A schematic flow chart of an embodiment of a method for obtaining cable force during construction of a concrete arch bridge provided by the present invention is shown in FIG. Figure 1 As shown in FIG. 1 , a method for obtaining the cable force of a concrete arch bridge construction includes: S101, constructing a finite element numerical model of a target reinforced concrete arch bridge, wherein the target reinforced concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; S102, applying a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model to obtain a vertical deformation distance of the arch top of the rotation side arch rib under the action of the compressive load; S103, obtaining a target cable force of the cable based on the vertical deformation distance, wherein the target cable force is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side and the arch top of the support construction side is the vertical deformation distance.

[0022] Compared with the prior art, the present embodiment provides a method for obtaining the cable tension of a concrete arch bridge construction, constructs a finite element numerical model of a target reinforced concrete arch bridge, the target reinforced concrete arch bridge includes a rotation construction side arch ring and a support construction side arch ring, applies a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model, obtains the vertical deformation distance of the arch top of the rotation side arch rib under the action of the compressive load, obtains the vertical deformation distance to balance the internal forces of the arch rings on both sides, obtains the target cable tension of the cable based on the vertical deformation distance, and is used to adjust the height of the rotation construction side arch ring so that the height difference between the arch top of the rotation construction side arch ring and the arch top of the support construction side arch ring is the vertical deformation distance. The present invention obtains the vertical deformation distance of the arch crown of the swivel side arch rib under the action of the weight load through finite element simulation, and makes the height difference between the arch crowns of the arch rings on both sides the vertical deformation distance, thereby solving the problem that the closing section is deformed when the weight load is applied to the closing section during the construction stage due to the asymmetric stiffness of the arch rings on both sides, affecting the construction quality of the closing section and the stability of the structure.

[0023] It should be noted that the concrete arch bridge of the present invention is a reinforced concrete arch bridge, but it can be understood that it may also be other types of concrete arch bridges.

[0024] In some embodiments of the present invention, see Figures 2 to 7, specifically including the following steps: The first step is to simulate the ballast load. In the finite element numerical model, the closure section ballast load is applied to the arch crowns on both sides to simulate the deformation of the arches on both sides under the condition of asymmetric stiffness. Through this simulation, the height difference of the arch crowns on both sides caused by the stiffness difference is calculated; Step 2: Pre-embed the rigid skeleton; level the site, set up cast-in-place brackets on the rotation construction side and the bracket construction side, cast the arch rings on both sides, and according to the arch ring design, bury the I-beams and steel plates of the rigid skeleton at the predetermined positions on both sides of the joint section when casting the arch rings on both sides. The rigid skeleton is made of high-strength steel, and its installation position needs to be accurately calculated and adjusted according to the conditions of the construction site. It is specifically welded by a combination of steel plates, channel steels, I-beams, and diagonal braces. The I-beams and steel plates are pre-embedded in the predetermined positions of the sections on both sides of the arch crown joint section. There are a total of 8 I-beams and 8 steel plates on the arch rings on both sides, which are symmetrically distributed about the center of the arch axis of the arch rib section; after the rotation is completed, weld the corresponding I-beams, and weld the diagonal brace rods to reinforce the I-beams; Step 3: Adjust the tension of the cable. During the construction of the rotating side, the cable system on the rotating side is used for tensioning. By adjusting the tension of the cable on the rotating side, a reasonable height difference is generated between the arch tops of the two sides of the arch ring. This height difference can offset the stiffness difference of the arch rings on both sides under the pressure load of the joint section. Step 4: Real-time monitoring and feedback. When adjusting the tension of the cable, the height difference of the arches on both sides is fed back through real-time monitoring, and the tension of the cable is dynamically adjusted to ensure that the required height difference is maintained before the arches on both sides are closed. Step 5: Install the rigid frame; After ensuring that the embedded I-beams on the swivel side and the bracket side are accurately connected, use high-strength welding technology to first connect the I-beams. Weld the diagonal braces; install the channel steel and weld it. After welding, check the weld to ensure there are no cracks and defects; Step 6: Ballast load adjustment and joint closure. After the rigid frame is welded, the joint section is ballasted. The ballast block is placed on the rigid frame near the rotating arch ring. The arch ring near the cast-in-place support is not ballasted. After a period of time, the concrete pouring operation is carried out. When pouring concrete, the layered pouring and vibration process is adopted. After the concrete is poured, the surface treatment is carried out, and the cable on the rotating construction side and the support on the cast-in-place construction side are removed at an appropriate time.

[0025] In some embodiments of the present invention, obtaining a target cable force based on the vertical deformation distance includes: Based on the gravity of the side arch ring of the rotating construction, determining the first initial force and the second initial force of the locking tension force; Obtain the pre-lift height of the side arch ring during rotation construction; Obtaining a first vertical displacement of the arch ring on the rotation construction side under the action of a first initial force; Obtaining a second vertical displacement of the arch ring on the rotation construction side under the action of a second initial force; Obtaining a displacement change of the dome under a unit cable force change based on the first vertical displacement, the second vertical displacement, the first initial force, and the second initial force; Determine the change value of the cable force based on the change amount of the arch crown displacement under the unit cable force change, the first vertical displacement and the pre-lift height; The target cable force is obtained based on the cable force change value and the first initial force.

[0026] In some embodiments of the present invention, obtaining the pre-lift height of the arch ring on the side of the rotation construction includes: The pre-lift height of the side arch ring of the rotation construction is obtained based on the vertical deformation distance.

[0027] In some embodiments of the present invention, obtaining the target cable force based on the cable force change value and the first initial force includes: The target cable force is obtained by adding the cable force change value to the first initial force.

[0028] In some embodiments of the present invention, the expression for the change in the displacement of the dome under the unit cable force change is:

[0029] In the formula, It represents the change of the arch displacement under the unit cable force change; represents the first vertical displacement; represents the second vertical displacement; represents the first initial force; Represents the second initial force.

[0030] In some embodiments of the present invention, the expression of the change value of the cable force is:

[0031] In the formula, Indicates the change value of the cable force; Indicates the pre-lift height; represents the first vertical displacement; It represents the change in the displacement of the arch crown under the unit change of the cable force.

[0032] In a specific embodiment of the present invention, the steps of calculating the cable force in step S103 are as follows: Firstly, a finite element model is established. The model is subjected to gravity and cable force, and the arch foot is consolidated.

[0033] Secondly, the initial cable force is proposed , , and extract The corresponding vertical displacement , Corresponding vertical displacement of the vault , then the change in the displacement of the arch crown under unit cable force change is:

[0034] Then the cable force changes , the deformation expression of the vault is:

[0035] In the formula, , The cable forces acting on the arch are Horizontal and vertical displacements.

[0036] Finally, the iterative solution , so that the vertical displacement of the arch reaches the pre-arch , that is, to obtain The size of The specific iteration process is as follows: By setting the initial force and step length , calculate the initial value; increase or decrease , recalculate as well as The value of the new combination is determined to determine whether it is better than the initial The value of is small, if so, update , otherwise adjust the direction of the step length; repeat the above steps until the convergence condition is met and output the final , which is the solved tensioning cable force of the rotation side cable.

[0037] In this embodiment, the vertical deformation distance of the arch crown of the rotating side arch rib under the action of the weight load is obtained through finite element simulation. The vertical deformation distance can effectively offset the deformation difference of the arch rings on both sides when the weight load of the joint section is applied due to the asymmetry of the arch ring stiffness, ensure that the arch rings on both sides maintain a balanced state when the joint is closed, and ensure that the linear shape and force of the structure are more symmetrical.

[0038] Embodiment 2: Taking a certain bridge as the background project, the main span of the reinforced concrete arch ring is about 100m, and the rise is 24.1m. The arch ring adopts a single-box double-chamber structure, the box beam height changes from 3m at the arch foot to 2m at the arch top, and the transverse width of the box beam is 5m. The left arch ring adopts rotation construction, and the right arch ring adopts bracket cast-in-place construction.

[0039] Reference Figures 2 to 7In an embodiment of the present application, a control method for the construction of a closure section of a reinforced concrete arch bridge is provided, comprising the following steps: Step 1: Ballast load simulation A finite element numerical model was established. The weight of the arch ring joint section was 40t. A vertical compressive load of 200kN acted on the top of the swivel side arch rib 5. Under the action of the vertical compressive load, the line shape of the swivel side arch rib 5 changed to line shape 5-2 under the compressive load. The vertical deformation of the top of the swivel side arch rib 5 under the compressive load was calculated to be d2=7mm.

[0040] Step 2: Pre-embed the rigid skeleton Level the site, set up cast-in-place brackets on the rotation construction side and cast-in-place brackets on the bracket construction side, cast the arch rings on both sides, and bury the I-beams and steel plates of the rigid skeleton at the predetermined positions on both sides of the joint section according to the arch ring design. The rigid skeleton is made of high-strength steel, and its installation position needs to be accurately calculated and adjusted according to the conditions of the construction site. It is specifically welded by a combination of steel plates 2, channel steels 1, I-beams 3, and diagonal braces 4. The I-beams 3 and steel plates 2 are pre-buried in the predetermined positions of the sections on both sides of the arch crown joint section. There are a total of eight sections of I-beams 3 and eight steel plates 2 on both sides of the arch rings, which are symmetrically distributed about the center of the arch axis of the arch rib section; after the rotation is completed, the corresponding I-beams 3 are welded, and the diagonal braces 4 are welded to enhance the rigidity of the I-beams 3.

[0041] Step 3: Adjust the tension of the 7-tension cable During the construction of the rotating body, the cable system on the rotating body is used for tensioning. By adjusting the tensioning force of the cable 7 on the rotating body, the arch rib 5 on the rotating body reaches the pre-lifting line 5-1 for the pre-lifting of the arch ribs on the rotating body, so that the arch crowns of the arch rings on both sides have a reasonable height difference, that is, the pre-lifting height. This height difference is the vertical deformation d2=7mm of the arch crown of the arch rib 5 on the rotating body under the weight load. This height difference can offset the stiffness difference of the arch rings on both sides under the weight load of the joint section.

[0042] Step 4: Real-time monitoring and feedback When adjusting the tension of the cable, the height difference of the arch rings on both sides is fed back through real-time monitoring, and the tension of the cable is dynamically adjusted to ensure that the required height difference is maintained before the arch rings on both sides are closed. Specifically, the tension of the cable 7 on the rotating side is solved.

[0043] Firstly, a finite element model is established. The model is subjected to gravity and cable force, and the arch foot is consolidated.

[0044] Initial cable forces =1870kN, =1880kN, the initial cable force is taken according to the gravity of the side arch ring during the rotation construction, and extracted Corresponding vertical displacement of the vault = 19.9011mm, Corresponding vertical displacement of the vault =23.4826mm, then the displacement change of the arch crown under the unit cable force change is: = 0.3598 mm / kN Then the cable force changes , the deformation expression of the vault is: = 19.9011+0.3598

[0045] In the formula, The cable force acting on the arch is =1870+ The vertical displacement below.

[0046] Finally, the iterative solution , which causes the vertical displacement of the vault Size reaches pre-arch , that is, to obtain The size of The specific iteration process is as follows: By setting the initial force =1870kN and step length , calculate the initial value; increase or decrease , recalculate as well as The value of the new combination is determined to determine whether it is better than the initial The value of is small, if so, update , otherwise adjust the direction of the step length; repeat the above steps until the convergence condition is met and output the final , which is the obtained tension cable force of the rotating side cable. =-35.85kN, then =1870+ =1905.85kN.

[0047] Step 5: Rigid frame installation After ensuring that the embedded I-beam 3 on the swivel side and the bracket side are accurately connected, the I-beam 3 is first connected using high-strength welding technology. The diagonal brace 4 is welded; the channel steel 1 is installed and welded. After welding, the weld is inspected to ensure that there are no cracks and defects.

[0048] Step 6: Weight treatment Ballast load adjustment and closure After the rigid frame welding is completed, the joint section is ballasted. The ballast block is placed on the rigid frame close to the rotating arch ring. The arch ring close to the cast-in-place support is not ballasted. After a period of time, the concrete pouring operation is carried out. When pouring concrete, the layered pouring and vibration process is adopted. After the concrete is poured, the surface treatment is carried out, and the cable on the rotating construction side and the cast-in-place construction side support are removed at an appropriate time.

[0049] In order to better implement a method for obtaining the cable force of a concrete arch bridge construction in an embodiment of the present invention, based on a method for obtaining the cable force of a concrete arch bridge construction, correspondingly, Figure 8 As shown, an embodiment of the present invention further provides a cable force acquisition device for concrete arch bridge construction, and a cable force acquisition device 800 for concrete arch bridge construction includes: A model building module 801 is used to build a finite element numerical model of a target concrete arch bridge, wherein the target concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; A vertical deformation distance acquisition module 802 is used to apply a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model to obtain the vertical deformation distance of the arch top of the rotation side arch rib under the compressive load; The cable tension acquisition module 803 is used to obtain the target cable tension of the cable based on the vertical deformation distance. The target cable tension is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side and the arch top of the support construction side is the vertical deformation distance.

[0050] The device 800 for obtaining the cable tension of a concrete arch bridge provided in the above embodiment can realize the technical solution described in the embodiment of the method for obtaining the cable tension of a concrete arch bridge. The specific implementation principles of the above modules or units can refer to the corresponding contents in the embodiment of the method for obtaining the cable tension of a concrete arch bridge, which will not be repeated here.

[0051] like Fig. 9 As shown, the present invention also provides an electronic device 900. The electronic device 900 includes a processor 901, a memory 902 and a display 903. Fig. 9 Only some components of the electronic device 900 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0052] In some embodiments, the processor 901 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run program codes or process data stored in the memory 902, such as a method for obtaining cable tension in concrete arch bridge construction in the present invention.

[0053] In some embodiments, the processor 901 may be a single server or a server group. The server group may be centralized or distributed. In some embodiments, the processor 901 may be local or remote. In some embodiments, the processor 901 may be implemented in a cloud platform. In some embodiments, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-cloud, etc., or any combination thereof.

[0054] In some embodiments, the memory 902 may be an internal storage unit of the electronic device 900, such as a hard disk or memory of the electronic device 900. In other embodiments, the memory 902 may also be an external storage device of the electronic device 900, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the electronic device 900.

[0055] Furthermore, the memory 902 may include both an internal storage unit of the electronic device 900 and an external storage device. The memory 902 is used to store application software installed in the electronic device 900 and various data.

[0056] In some embodiments, the display 903 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 903 is used to display information on the electronic device 900 and to display a visual user interface. The components 901-903 of the electronic device 900 communicate with each other via a system bus.

[0057] In one embodiment, when the processor 901 executes a concrete arch bridge construction cable force acquisition program in the memory 902, the following steps may be implemented: Constructing a finite element numerical model of a target concrete arch bridge, the target concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; Apply a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model, and obtain the vertical deformation distance of the arch top of the rotation side arch rib under the action of the compressive load; The target cable force of the cable is obtained based on the vertical deformation distance, and the target cable force is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side and the arch top of the support construction side is the vertical deformation distance.

[0058] It should be understood that: when the processor 901 executes a concrete arch bridge construction cable tension acquisition program in the memory 902, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0059] Furthermore, the embodiment of the present invention does not specifically limit the type of the electronic device 900 mentioned, and the electronic device 900 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic devices may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 900 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0060] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for obtaining cable force during construction of a concrete arch bridge, characterized in that: include: Constructing a finite element numerical model of a target concrete arch bridge, the target concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; Apply a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model, and obtain the vertical deformation distance of the arch top of the rotation side arch rib under the action of the compressive load; The target cable force of the cable is obtained based on the vertical deformation distance, and the target cable force is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side and the arch top of the support construction side is the vertical deformation distance.

2. The method for obtaining cable force during construction of a concrete arch bridge according to claim 1, characterized in that: The obtaining a target cable force based on the vertical deformation distance comprises: Based on the gravity of the side arch ring of the rotating construction, determining the first initial force and the second initial force of the locking tension force; Obtain the pre-lift height of the side arch ring during rotation construction; Obtaining a first vertical displacement of the arch ring on the rotation construction side under the action of a first initial force; Obtaining a second vertical displacement of the arch ring on the rotation construction side under the action of a second initial force; Obtaining a displacement change of the dome under a unit cable force change based on the first vertical displacement, the second vertical displacement, the first initial force, and the second initial force; Determine the change value of the cable force based on the change amount of the arch crown displacement under the unit cable force change, the first vertical displacement and the pre-lift height; The target cable force is obtained based on the cable force change value and the first initial force.

3. The method for obtaining cable force during construction of a concrete arch bridge according to claim 2, characterized in that: The step of obtaining the pre-lift height of the side arch ring during the rotation construction comprises: The pre-lift height of the side arch ring of the rotation construction is obtained based on the vertical deformation distance.

4. The method for obtaining cable force during construction of a concrete arch bridge according to claim 2, characterized in that: The step of obtaining the target cable force based on the cable force change value and the first initial force includes: The target cable force is obtained by adding the cable force change value to the first initial force.

5. The method for obtaining cable force during construction of a concrete arch bridge according to claim 3, characterized in that: The expression of the change in the displacement of the arch crown under the unit cable force change is: In the formula, It represents the change of the arch displacement under the unit cable force change; represents the first vertical displacement; represents the second vertical displacement; represents the first initial force; Represents the second initial force.

6. The method for obtaining cable force during construction of a concrete arch bridge according to claim 2, characterized in that: The expression of the change value of the cable force is: In the formula, Indicates the change value of the cable force; Indicates the pre-lift height; represents the first vertical displacement; It represents the change in the displacement of the arch crown under the unit change of the cable force.

7. A cable force acquisition device for concrete arch bridge construction, characterized in that: include: A model building module, used to build a finite element numerical model of a target reinforced concrete arch bridge, the target reinforced concrete arch bridge includes a rotation construction side arch ring and a bracket construction side arch ring; A vertical deformation distance acquisition module is used to apply a compressive load to the rotation side arch rib of the rotation construction side arch ring of the finite element numerical model to obtain the vertical deformation distance of the arch top of the rotation side arch rib under the compressive load; The cable force acquisition module is used to obtain the target cable force of the cable based on the vertical deformation distance. The target cable force is used to adjust the height of the arch ring on the rotation construction side so that the height difference between the arch top of the rotation construction side arch ring and the arch top of the support construction side arch ring is the vertical deformation distance.

8. The cable force acquisition device for concrete arch bridge construction according to claim 1, characterized in that: The obtaining a target cable force based on the vertical deformation distance comprises: Based on the gravity of the side arch ring of the rotating construction, determining the first initial force and the second initial force of the locking tension force; Obtain the pre-lift height of the side arch ring during rotation construction; Obtaining a first vertical displacement of the arch ring on the rotation construction side under the action of a first initial force; Obtaining a second vertical displacement of the arch ring on the rotation construction side under the action of a second initial force; Obtaining a displacement change of the dome under a unit cable force change based on the first vertical displacement, the second vertical displacement, the first initial force, and the second initial force; Determine the change value of the cable force based on the change amount of the arch crown displacement under the unit cable force change, the first vertical displacement and the pre-lift height; The target cable force is obtained based on the cable force change value and the first initial force.

9. An electronic device, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the method for obtaining the cable force of a concrete arch bridge construction as described in any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: Used to store computer-readable programs or instructions, which, when executed by a processor, can implement the steps of a method for obtaining cable tension in the construction of a concrete arch bridge as described in any one of claims 1 to 6.

Images