Method and device for calculating shear capacity of fabricated composite coupling beam
By introducing correction coefficients into the calculation method of shear bearing capacity of prefabricated composite beams, considering the impact of the connection degree of upper and lower beams in composite beams and the impact of the overlapping of new and old concrete on the shear bearing capacity, the problem of poor calculation accuracy in the existing technology is solved, and a higher calculation accuracy of shear bearing capacity is achieved.
Patent Information
- Application Number
- CN202411790920.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-03-28
AI Technical Summary
In the prior art, the shear bearing capacity calculation accuracy of the composite beam of assembled integral superimposed shear wall structure is poor, and the adverse effects of prefabricated and post-cast concrete superimposed surfaces and horizontal joints on the bearing capacity are ignored.
A method for calculating the shear bearing capacity of the prefabricated composite beam is provided. By introducing correction coefficients, including coefficients used to describe the degree of connection between upper and lower beams and the influence of the impact of new and old concrete overlapping against the shear bearing capacity, the initial formula is adjusted to improve the calculation accuracy.
By considering the influence of horizontal joints and overlapping surfaces in composite beams, the calculation accuracy of the shear bearing capacity of prefabricated composite beams is improved, ensuring that the calculation results are closer to the actual bearing capacity.
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Figure CN119720352A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of assembled reinforced concrete structures, and in particular to a method and device for calculating the shear bearing capacity of a composite coupling beam of an assembled integral composite shear wall structure. Background Art
[0002] The application of prefabricated building structures in high-rise building structures is becoming more and more extensive, the use of prefabricated coupling beams is becoming more and more common, and the requirements for the seismic resistance and bearing capacity of coupling beams are becoming higher and higher.
[0003] At present, the research on the use of prefabricated composite coupling beams is still in its infancy, and there are few related studies. Usually, the design and bearing capacity calculation of composite coupling beams of prefabricated integral composite shear wall structures are carried out according to existing specifications and the "equivalent cast-in-place" method.
[0004] However, this method ignores the adverse effects of the precast and post-cast concrete overlap surfaces and the horizontal joints between the upper and lower coupling beams in the prefabricated composite coupling beams of the assembled integral composite shear wall structure on its bearing capacity, resulting in poor calculation accuracy. Summary of the invention
[0005] In view of this, it is necessary to provide a method and device for calculating the shear bearing capacity of an assembled composite coupling beam suitable for assembled integral composite shear wall structures, so as to solve the problem of poor calculation accuracy in the prior art.
[0006] In order to solve the above problems, the present application provides a method for calculating the shear bearing capacity of an assembled composite coupling beam, comprising: Obtain the initial formula for calculating the shear bearing capacity of prefabricated composite coupling beams; Introducing a correction coefficient into the initial formula to obtain a target formula, wherein the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; Based on the obtained shear bearing capacity data of the assembled composite coupling beam, the correction coefficient in the target formula is fitted to obtain the final shear bearing capacity calculation formula.
[0007] In some possible implementations, the initial formula is:
[0008] In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, Indicates the spacing of stirrups in the composite coupling beam.
[0009] In some possible implementations, the correction factor further includes a second correction factor for describing the effect of the overlapped surface of new and old concrete in the assembled composite coupling beam on its shear bearing capacity.
[0010] In some possible implementations, the target formula is:
[0011] In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, represents the spacing of stirrups in the composite coupling beam, It represents the first correction factor used to describe the effect of the connection degree between the upper and lower coupling beams in the composite coupling beam on its shear bearing capacity. It represents the second correction factor used to describe the effect of the overlap surface of new and old concrete on the shear bearing capacity of composite coupling beams.
[0012] In some possible implementations, the first correction coefficient is:
[0013] In the formula, Indicates the degree of connection between the upper and lower coupling beams in the composite coupling beam. and Represents a constant.
[0014] In some possible implementations, the shear bearing capacity data of the assembled composite coupling beam is obtained by the following steps: Obtaining wall shear force data obtained from a seismic performance test of a composite shear wall provided with assembled composite coupling beams; Based on a preset wall axial force calculation formula and the wall shear force data, obtaining wall axial force data; The wall axial force is distributed according to the stiffness of each coupling beam, and the shear force data of the assembled composite coupling beam is obtained based on the wall axial force data. Based on the shear force data of the assembled composite coupling beam, the shear bearing capacity data of the assembled composite coupling beam is obtained.
[0015] In some possible implementations, the wall axial force calculation formula is:
[0016] In the formula, represents the axial force of the wall, represents the influencing parameter of the axial deformation of the wall, is the wall shear force, Indicates the height of the wall. represents the distance between the centroids of the left and right wall limbs, represents the overall coefficient of the wall, Indicates the relative height of the calculated section of the wall.
[0017] In some possible implementations, the formula for calculating the shear force data of the assembled composite coupling beam is:
[0018] In the formula, represents the axial force of the wall, represents the shear force of a composite coupling beam, Represents the shear force of the second-floor composite coupling beam.
[0019] The present application also provides a device for calculating the shear bearing capacity of an assembled composite coupling beam, comprising: A formula acquisition unit, used to acquire an initial formula for calculating the shear bearing capacity of the assembled composite coupling beam; A formula correction unit, used for introducing a correction coefficient into the initial formula to obtain a target formula, wherein the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; The data fitting unit is used to fit the correction coefficient in the target formula based on the obtained shear bearing capacity data of the assembled composite coupling beam to obtain a final shear bearing capacity calculation formula.
[0020] The present application also provides an electronic device, including a memory and a processor; 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 of the above-mentioned method for calculating the shear bearing capacity of the assembled composite coupling beam.
[0021] The beneficial effect of the present application is that the method for calculating the shear bearing capacity of the prefabricated composite coupling beam provided by the present application introduces a first correction coefficient to consider the influence of the horizontal joints in the prefabricated composite coupling beam on its shear bearing capacity, thereby improving the calculation accuracy of the shear bearing capacity of the prefabricated composite coupling beam. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of a flow chart of an embodiment of a method for calculating the shear bearing capacity of an assembled composite coupling beam provided in the present application; Figure 2 A schematic flow chart of an embodiment of the steps for obtaining shear bearing capacity data of the assembled composite coupling beam provided in the present application; Figure 3 Schematic diagram of the test loading regime provided for this application; Figure 4 Schematic diagram of force analysis of the joint shear wall provided for this application; Figure 5 A schematic structural diagram of an embodiment of a device for calculating the shear bearing capacity of an assembled composite coupling beam provided in the present application; Figure 6 A schematic diagram of the structure of an embodiment of an electronic device provided in this application. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0024] It should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowcharts may be implemented out of order, and steps without logical contextual relationships may be reversed in order or implemented simultaneously. In addition, those skilled in the art may add one or more other operations to the flowcharts, or may remove one or more operations from the flowcharts, under the guidance of the content of this application. Some of the block diagrams shown in the accompanying drawings are functional entities, and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor systems and / or microcontroller systems.
[0025] The descriptions of "first", "second", etc. involved in the embodiments of the present application are only used to describe the implicit purpose, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features. "And / or" describes the association relationship of the associated objects, indicating that three relationships may exist, for example: A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone.
[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0027] The present application provides a method for calculating the shear bearing capacity of an assembled composite coupling beam, which is described below.
[0028] Figure 1 A schematic diagram of an embodiment of a method for calculating the shear bearing capacity of an assembled composite coupling beam provided in this application is shown in FIG. Figure 1 As shown in the figure, the calculation method of shear bearing capacity of prefabricated composite coupling beam includes: S101, obtaining an initial formula for calculating the shear bearing capacity of the assembled composite coupling beam; S102, introducing a correction coefficient into the initial formula to obtain a target formula, wherein the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; S103. Based on the obtained shear bearing capacity data of the prefabricated composite coupling beam, the correction coefficient in the target formula is fitted to obtain a final shear bearing capacity calculation formula.
[0029] Compared with the prior art, the present application introduces a first correction coefficient to consider the influence of the horizontal joints in the assembled composite coupling beam on its shear bearing capacity, thereby improving the calculation accuracy of the shear bearing capacity of the composite coupling beam.
[0030] In order to obtain a better initial formula, in some embodiments, the shear bearing capacity of the prefabricated composite coupling beam is provided by concrete and stirrups. According to the existing specifications, the initial formula for calculating the shear bearing capacity of the prefabricated composite coupling beam with a small span-to-height ratio when there is a combination of seismic actions is designed according to the "equivalent cast-in-place" method:
[0031] In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, Indicates the spacing of stirrups in the composite coupling beam.
[0032] Furthermore, in order to improve the calculation accuracy, in some embodiments, the influence of the overlapping surface between the outer prefabricated wall panels and the post-cast concrete in the prefabricated composite coupling beam on its shear bearing capacity is taken into account. Specifically, the correction coefficient also includes a second correction coefficient for describing the influence of the overlapping surface of the new and old concrete in the prefabricated composite coupling beam on its shear bearing capacity.
[0033] In order to better introduce the correction coefficient into the initial formula, in some embodiments, the seismic performance test of the combined composite shear wall provided with assembled composite coupling beams was carried out, and the finite element simulation analysis model of the combined composite shear wall was established. The simulation results of the finite element simulation analysis model were extracted and compared with the measured results. The error between the simulation results and the measured results was within 6%, which was small, verifying the effectiveness of the model. The influence of the existence of the superposition surface, the existence of the horizontal joint and the connection degree of the upper and lower coupling beams of the composite coupling beam on the shear bearing capacity of the composite coupling beam was explored by combining the experimental research and simulation analysis. Combined with the existing calculation method and the analysis of the shear force of the coupling beam, the target formula was determined as follows:
[0034]
[0035] In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, represents the spacing of stirrups in the composite coupling beam, It represents the second correction factor used to describe the effect of the overlap between the new and old concrete surfaces on the shear bearing capacity of the composite coupling beam. It represents the first correction factor used to describe the effect of the connection degree between the upper and lower coupling beams in the composite coupling beam on its shear bearing capacity. Indicates the degree of connection between the upper and lower coupling beams in a composite coupling beam. If there is no connecting reinforcement, , if the number of connecting steel bars is the same as the number of stirrups in the upper and lower coupling beams, then , and Represents a constant.
[0036] Therefore, by introducing the connection degree parameter of the upper and lower coupling beams in the composite coupling beam into the first correction coefficient Not only the adverse effect of the horizontal joints in the assembled composite coupling beams on their bearing capacity is considered, but also the influence of different connection degrees on their shear bearing capacity is considered. According to the construction process of the assembled integral composite shear wall structure and the structural characteristics of the composite coupling beams, the stress characteristics of the coupling beams can be adjusted by controlling the connection degree of each independent coupling beam that constitutes the composite coupling beam, so as to achieve multi-stage stress under earthquake action, improve the seismic performance of the coupling beams and improve the seismic performance of the overall structure. This method is not only more convenient for the construction of the assembled integral composite shear wall structure, but also can meet the structural stress requirements.
[0037] In order to better fit the correction factor and In some embodiments, as Figure 2 As shown in Figure 1, the shear bearing capacity data of the assembled composite coupling beam is obtained by the following steps: S201, obtaining wall shear force data obtained from a seismic performance test of a coupled composite shear wall provided with assembled composite coupling beams; It should be noted that the test includes the following steps: According to the assembly construction characteristics of shear walls and coupling beams of assembled composite shear wall structures, the assembly method and structural form of assembled composite coupling beams that can be used in composite shear wall structures are designed; According to GB50010-2010 Code for Design of Concrete Structures, GB50011-2010 Code for Seismic Design of Buildings, GBT51231-2016 Technical Standard for Prefabricated Concrete Structures, and DB42 / T 1483-2018 Technical Specification for Prefabricated Monolithic Concrete Composite Shear Wall Structures, the dimensions of prefabricated composite coupling beams and test components of composite composite shear wall structures with prefabricated composite coupling beams are designed, including three types of composite composite shear walls with 0%, 30% and 100% connection degrees between the upper and lower coupling beams of the prefabricated composite coupling beams; According to the relevant specifications, the building materials designed for the test components are tested for performance, including the physical and mechanical properties of concrete and steel bars, to obtain the concrete strength. , steel bar yield strength , elastic modulus of steel bar The material parameters are shown in Table 1 and Table 2 below: Table 1: Compressive strength of concrete cubes
[0038] Table 2: Mechanical properties of steel bars
[0039] According to the test requirements and relevant specifications, the measuring points were arranged and the test loading scheme was designed. A total of 31 displacement meters were set up in the test to monitor the deformation of the specimen, of which 12 were set at the composite coupling beam to monitor its deformation. The test scheme was designed in accordance with the seismic test procedures for concrete structures. The vertical load axial compression ratio was 0.15, and the application of horizontal load was divided into three stages. First, preloading was carried out to detect whether the test equipment was working properly. The formal loading could only be carried out after the preloading determined that the test loading device and data monitoring instrument were working properly. Before the specimen yielded, load control was adopted, and each load cycle was repeated once. Each load level increased by 60kN. When the specimen was close to yielding, the load increased by 30kN. After the specimen yielded, displacement loading was adopted. The loading displacement value was the displacement corresponding to the yield of the stressed steel bar of the specimen, that is, 1 times △y, and increased step by step. Each displacement loading was repeated three times. When the horizontal force dropped below 85% of the peak load, the loading was stopped. The loading system of this test is as follows: Figure 3 shown.
[0040] S202, obtaining wall axial force data based on a preset wall axial force calculation formula and wall shear force data; It should be noted that the calculation formula for the wall axial force is:
[0041] In the formula, represents the axial force of the wall, represents the influencing parameter of the axial deformation of the wall, is the wall shear force, Indicates the height of the wall. represents the distance between the centroids of the left and right wall limbs, represents the overall coefficient of the wall, Indicates the relative height of the calculated section of the wall.
[0042] S203, allocating the wall axial force according to the stiffness of each coupling beam, and then obtaining the composite coupling beam shear force data based on the wall axial force data, and obtaining the composite coupling beam shear bearing capacity data based on the composite coupling beam shear force data.
[0043] It should be noted that, from the balance of forces, the axial force of the wall at a certain section of the combined shear wall is equal to the sum of the shear forces of all the coupling beams above the section. The shear forces on each coupling beam are distributed according to the stiffness of the coupling beam, such as Figure 4 As shown in the figure, the relationship between the axial force of the wall and the shear force of the connecting beam can be expressed as:
[0044] In the formula, represents the axial force of the wall, represents the shear force of a composite coupling beam, It represents the shear force of the second-floor composite coupling beam. The shear force of the composite coupling beam can be obtained by distributing the axial force of the wall according to the stiffness of the first-floor and second-floor coupling beams of the specimen.
[0045] Using the above-mentioned shear bearing capacity data of prefabricated composite coupling beams, the correction coefficient in the target formula is and Numerical fitting is performed to obtain the value of the correction coefficient, and the final shear bearing capacity calculation formula is obtained as follows:
[0046]
[0047] In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, represents the spacing of stirrups in the composite coupling beam, It represents the first correction factor used to describe the effect of the connection degree between the upper and lower coupling beams in the composite coupling beam on its shear bearing capacity. Indicates the degree of connection between the upper and lower coupling beams in a composite coupling beam. If there is no connecting reinforcement, , if the number of connecting steel bars is the same as the number of stirrups in the upper and lower coupling beams, then .
[0048] The shear bearing capacity of the assembled composite coupling beam is calculated using the above shear bearing capacity calculation formula. The theoretical calculation results and the actual test results are shown in Table 3: Table 3: Statistical table of shear bearing capacity of prefabricated composite coupling beams of combined shear walls
[0049] Comparing the theoretical calculated values and measured values of each specimen, it is found that the calculated values are in good agreement with the measured values, and the ratio of the theoretical calculated value to the measured value is basically controlled between 0.95-1.03, with an error within 5%. Therefore, the correction of the shear bearing capacity of the existing small span-to-height ratio coupling beam can better evaluate the shear bearing capacity of the small span-to-height ratio prefabricated composite coupling beam of the assembled integral composite shear wall structure.
[0050] In order to better implement a method for calculating the shear bearing capacity of a prefabricated composite coupling beam in an embodiment of the present application, based on a method for calculating the shear bearing capacity of a prefabricated composite coupling beam, correspondingly, Figure 5As shown, the embodiment of the present application further provides a composite coupling beam shear bearing capacity calculation device 500, comprising: A formula acquisition unit 501 is used to acquire an initial formula for calculating the shear bearing capacity of the assembled composite coupling beam; A formula correction unit 502 is used to introduce a correction coefficient into the initial formula to obtain a target formula, wherein the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; The data fitting unit 503 is used to fit the correction coefficient in the target formula based on the obtained shear bearing capacity data of the assembled composite coupling beam to obtain a final shear bearing capacity calculation formula.
[0051] The device 500 for calculating the shear bearing capacity of the prefabricated composite coupling beam provided in the above embodiment can implement the technical solution described in the above embodiment of the method for calculating the shear bearing capacity of the prefabricated composite coupling beam. The specific implementation principles of the above units can refer to the corresponding contents in the above embodiment of the method for calculating the shear bearing capacity of the prefabricated composite coupling beam, which will not be repeated here.
[0052] like Figure 6 As shown, the present application also provides an electronic device 600. The electronic device 600 includes a processor 601, a memory 602 and a display 603. Figure 6 Only some components of the electronic device 600 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.
[0053] In some embodiments, the memory 602 may be an internal storage unit of the electronic device 600, such as a hard disk or memory of the electronic device 600. In other embodiments, the memory 602 may also be an external storage device of the electronic device 600, 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 600.
[0054] Furthermore, the memory 602 may include both an internal storage unit of the electronic device 600 and an external storage device. The memory 602 is used to store application software installed in the electronic device 600 and various data.
[0055] In some embodiments, the processor 601 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 602, such as the method for calculating the shear bearing capacity of the composite coupling beam in the present application.
[0056] In some embodiments, the display 603 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 603 is used to display information on the electronic device 600 and to display a visual user interface. The components 601-603 of the electronic device 600 communicate with each other via a system bus.
[0057] In some embodiments of the present application, when the processor 601 executes the shear bearing capacity calculation program of the composite coupling beam in the memory 602, the following steps may be implemented: Obtain the initial formula for calculating the shear bearing capacity of prefabricated composite coupling beams; Introducing a correction coefficient into the initial formula to obtain a target formula, the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; Based on the obtained shear bearing capacity data of prefabricated composite coupling beams, the correction coefficient in the target formula is fitted to obtain the final shear bearing capacity calculation formula.
[0058] It should be understood that: when the processor 601 executes the shear bearing capacity calculation program of the assembled composite coupling beam in the memory 602, in addition to the above functions, other functions can also be realized. For details, please refer to the description of the corresponding method embodiment above.
[0059] Furthermore, the embodiment of the present application does not specifically limit the type of the electronic device 600 mentioned, and the electronic device 600 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 application, the electronic device 600 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).
[0060] The above is a detailed introduction to a method for calculating the shear bearing capacity of an assembled composite coupling beam provided in the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
[0061] The above is only a preferred specific implementation of the present application, but the protection scope of the present application 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 in the present application should be covered within the protection scope of the present application.
Claims
1. A method for calculating the shear bearing capacity of an assembled composite coupling beam, characterized in that: include: Obtain the initial formula for calculating the shear bearing capacity of prefabricated composite coupling beams; Introducing a correction coefficient into the initial formula to obtain a target formula, wherein the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; Based on the preset shear bearing capacity data of the assembled composite coupling beam, the correction coefficient in the target formula is fitted to obtain the final shear bearing capacity calculation formula.
2. The method for calculating the shear bearing capacity of an assembled composite coupling beam according to claim 1, characterized in that: The initial formula is: In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, Indicates the spacing of stirrups in the composite coupling beam.
3. The method for calculating the shear bearing capacity of an assembled composite coupling beam according to claim 1, characterized in that: The correction factor also includes a second correction factor for describing the effect of the overlapped surface of new and old concrete in the assembled composite coupling beam on its shear bearing capacity.
4. The method for calculating the shear bearing capacity of the assembled composite coupling beam according to claim 3 is characterized in that: The target formula is: In the formula, represents the shear bearing capacity of the composite coupling beam, represents the seismic bearing capacity adjustment factor, represents the strength of concrete in the composite coupling beam, represents the width of the composite coupling beam, represents the height of the composite coupling beam, represents the yield strength of the stirrups in the composite coupling beam, represents the cross-sectional area of all stirrups in the composite coupling beam, represents the spacing of stirrups in the composite coupling beam, It represents the first correction factor used to describe the effect of the connection degree between the upper and lower coupling beams in the composite coupling beam on its shear bearing capacity. It represents the second correction factor used to describe the effect of the overlapped surface in the composite coupling beam on its shear bearing capacity.
5. The method for calculating the shear bearing capacity of an assembled composite coupling beam according to claim 4, characterized in that: The first correction coefficient is: In the formula, Indicates the degree of connection between the upper and lower coupling beams in the composite coupling beam. and Represents a constant.
6. The method for calculating the shear bearing capacity of an assembled composite coupling beam according to claim 1, characterized in that: The shear bearing capacity data of the assembled composite coupling beam is obtained by the following steps: Obtaining wall shear force data obtained from a seismic performance test of a composite shear wall provided with assembled composite coupling beams; Based on a preset wall axial force calculation formula and the wall shear force data, obtaining wall axial force data; The wall axial force is distributed according to the stiffness of each coupling beam, and the shear force data of the composite coupling beam is obtained based on the wall axial force data. Based on the shear force data of the composite coupling beam, the shear bearing capacity data of the assembled composite coupling beam is obtained.
7. The method for calculating the shear bearing capacity of an assembled composite coupling beam according to claim 6, characterized in that: The wall axial force calculation formula is: In the formula, represents the axial force of the wall, represents the influencing parameter of the axial deformation of the wall, is the wall shear force, Indicates the height of the wall. represents the distance between the centroids of the left and right wall limbs, represents the overall coefficient of the wall, Indicates the relative height of the calculated section of the wall.
8. The method for calculating the shear bearing capacity of an assembled composite coupling beam according to claim 6, characterized in that: The formula for calculating the shear force data of the assembled composite coupling beam is: In the formula, represents the axial force of the wall, represents the shear force of a composite coupling beam, Represents the shear force of the second-floor composite coupling beam.
9. A device for calculating the shear bearing capacity of an assembled composite coupling beam, characterized in that: include: A formula acquisition unit, used for acquiring an initial formula for calculating the shear bearing capacity of the assembled composite coupling beam; A formula correction unit, used for introducing a correction coefficient into the initial formula to obtain a target formula, wherein the correction coefficient includes a first correction coefficient for describing the influence of the connection degree of the upper and lower coupling beams in the assembled composite coupling beam on its shear bearing capacity; The data fitting unit is used to obtain the shear bearing capacity data of the prefabricated composite coupling beam based on the preset data, and to fit the correction coefficient in the target formula to obtain the final shear bearing capacity calculation formula.
10. An electronic device, characterized in that: including memory and processor; 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 of the method for calculating the shear bearing capacity of the assembled composite coupling beam as described in any one of claims 1 to 8 above.