A method, device, storage medium and electronic device for rapid assessment of gravity dam seismic safety based on strong vibration monitoring

Abstract

The embodiments of the present application provide a method, device, storage medium, and electronic device for rapid earthquake safety assessment of a gravity dam based on strong vibration monitoring, which relates to the field of earthquake monitoring technology. The method includes: deploying strong vibration monitoring points on a gravity dam section; when an earthquake occurs, obtaining acceleration response data at the strong vibration monitoring points; establishing a one-dimensional finite element model of the gravity dam section; performing computational analysis based on the acceleration response data and the one-dimensional finite element model; and conducting a safety assessment of the gravity dam based on the computational analysis results. The present application utilizes the monitored acceleration response data and the established one-dimensional finite element model to rapidly calculate the stress value of the gravity dam under earthquake action, and then rapidly determines whether the gravity dam is safe based on the stress value so that corresponding emergency measures can be taken. The application has broad application value.

Description

Technical Field

[0001] The present application relates to the field of earthquake monitoring technology, and in particular to a method, device, storage medium and electronic equipment for rapid earthquake safety assessment of a gravity dam based on strong vibration monitoring. Background Art

[0002] Existing strong vibration monitoring technology simply places accelerometers on the main sections of a gravity dam. When an earthquake occurs, the recorders begin to record the dam's seismic response, providing the dam's acceleration time-history response curve and maximum acceleration peak under the action of the earthquake. These monitoring data can be used for future seismic reinforcement design, but cannot quickly evaluate whether the dam is seismically safe. Summary of the Invention

[0003] The embodiments of the present application provide a method, device, storage medium and electronic device for rapid evaluation of the seismic safety of a gravity dam based on strong vibration monitoring. This method can quickly provide an evaluation result on whether the dam is safe.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0005] According to a first aspect of an embodiment of the present application, a method for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring is provided, comprising:

[0006] Deploy strong vibration monitoring points on the gravity dam section;

[0007] When an earthquake occurs, obtaining acceleration response data at the strong vibration monitoring point;

[0008] Establish a one-dimensional finite element model of the gravity dam section;

[0009] Performing computational analysis based on the acceleration response data and the one-dimensional finite element model;

[0010] Safety evaluation of gravity dam is carried out based on calculation and analysis results.

[0011] In some embodiments of the present application, based on the above solution, establishing a one-dimensional finite element model of the gravity dam section includes:

[0012] Calculate dam body characteristic parameters: Divide the dam body into n-1 dam blocks along the elevation, and calculate the cross-sectional parameters of each cross-section, where n is an integer greater than or equal to 1. Use software to calculate the cross-sectional characteristics of complex irregular cross-sections. Use software to establish the flexibility matrix and mass matrix of the one-dimensional finite element model.

[0013] Setting boundary conditions: Determine the dynamic interaction between the dam and the foundation based on the Vogt foundation coefficient method, and ignore the influence of foundation damping and mass;

[0014] Apply additional mass: use the Stegaard added mass model;

[0015] Applied loads: Static and seismic loads are applied in accordance with current regulations.

[0016] In some embodiments of the present application, based on the aforementioned solution, the performing of computational analysis based on the acceleration response data and the one-dimensional finite element model includes:

[0017] The acceleration response data is used as model input data and input into the one-dimensional finite element model for calculation and analysis to obtain the stress of the gravity dam under the action of an earthquake.

[0018] In some embodiments of the present application, based on the aforementioned solution, the safety evaluation of the gravity dam based on the calculation and analysis results includes:

[0019] Based on the comparison and judgment of the stress of the gravity dam under the action of earthquake and the allowable strength value of the dam concrete material;

[0020] When the stress of the gravity dam under the action of an earthquake is less than the allowable strength value of the dam concrete material, the gravity dam is judged to be safe.

[0021] According to a second aspect of an embodiment of the present application, a device for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring is provided, comprising:

[0022] Deployment unit, used to deploy strong vibration monitoring points on the gravity dam section;

[0023] an acquisition unit, configured to acquire acceleration response data at the strong vibration monitoring point when an earthquake occurs;

[0024] Establishing elements for building a one-dimensional finite element model of the gravity dam section;

[0025] a calculation and analysis unit, configured to perform calculation and analysis based on the acceleration response data and the one-dimensional finite element model;

[0026] The evaluation unit is used to conduct safety evaluation of gravity dams based on calculation and analysis results.

[0027] According to a third aspect of an embodiment of the present application, a computer-readable storage medium is provided, wherein the storage medium stores computer instructions. When the computer instructions are executed on a computer, the computer executes the method according to the first aspect.

[0028] According to a fourth aspect of the embodiments of the present application, there is provided an electronic device, including a memory and a processor;

[0029] The memory is used to store computer instructions;

[0030] The processor is configured to call the computer instructions stored in the memory so that the electronic device executes the method according to the first aspect.

[0031] The technical solution of the present application uses the monitored acceleration response data and the established one-dimensional finite element model to quickly calculate the stress value of the gravity dam under the action of earthquake, and then quickly judges whether the gravity dam is safe based on the stress value so that corresponding emergency measures can be taken. It has broad application value.

[0032] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, explaining the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0034] Figure 1 A flow chart of a method for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring according to an embodiment of the present application is shown;

[0035] Figure 2 A schematic diagram of bottom acceleration measurement points according to one embodiment of the present application is shown;

[0036] Figure 3 shows a schematic diagram of acceleration response data according to one embodiment of the present application;

[0037] Figure 4 A block diagram of a device for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring according to an embodiment of the present application is shown;

[0038] Figure 5 A block diagram of an electronic device according to an embodiment of the present application is shown;

[0039] Figure 6 A schematic diagram of the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0041] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0042] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0043] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0044] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] The following will describe some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0046] See also Figure 1 , shows a flow chart of a method for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring according to an embodiment of the present application.

[0047] like Figure 1As shown, a method for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring is presented, including steps S100 to S500.

[0048] refer to Figure 1 , step S100, setting up strong vibration monitoring points on the gravity dam section.

[0049] It should be noted that in this embodiment, monitoring points are mainly set at the bottom of the gravity dam section, for example, Figure 2 As shown in Figure 1, acceleration measuring points are set at the bottom of the gravity dam section to obtain acceleration response data.

[0050] Continue to refer Figure 1 , step S200, when an earthquake occurs, obtaining acceleration response data at the strong vibration monitoring point.

[0051] For example, the acceleration response data obtained is as follows: Figure 3 As shown, the acquired acceleration response data is used as the input of the model.

[0052] Continue to refer Figure 1 , step S300, establishing a one-dimensional finite element model of the gravity dam section.

[0053] It should be noted that this embodiment converts the complex three-dimensional finite element concrete gravity dam model into a one-dimensional finite element model for analysis by refining the core mechanical characteristics of the gravity dam, thereby accelerating the analysis and calculation process.

[0054] In some feasible embodiments, based on the above solution, establishing a one-dimensional finite element model of the gravity dam section includes:

[0055] Calculate dam body characteristic parameters: Divide the dam body into n-1 dam blocks along the elevation, and calculate the cross-sectional parameters of each cross-section, where n is an integer greater than or equal to 1. Use software to calculate the cross-sectional characteristics of complex irregular cross-sections. Use software to establish the flexibility matrix and mass matrix of the one-dimensional finite element model.

[0056] Setting boundary conditions: Determine the dynamic interaction between the dam and the foundation based on the Vogt foundation coefficient method, and ignore the influence of foundation damping and mass;

[0057] Apply additional mass: use the Stegaard added mass model;

[0058] Applied loads: Static and seismic loads are applied in accordance with current regulations.

[0059] It should be noted that the cross-sectional parameters include area, centroid position, moment of inertia and other parameters.

[0060] It should be noted that in the calculation process of the dam body characteristic parameters, it should be noted that the gravity dam is simplified into a variable-section beam, not a vertical cantilever beam in the general sense, but an inclined beam with varying cross-sectional parameters at each layer, a center of mass not on a vertical line, and a slope that changes along the height. Therefore, the horizontal displacement and the vertical displacement are coupled with each other, and each section is treated using the method of corrected eccentricity. In other words, horizontal loads produce both horizontal and vertical displacements, and similarly, vertical loads will also produce both vertical and horizontal displacements.

[0061] Continue to refer Figure 1 , step S400, performing calculation analysis based on the acceleration response data and the one-dimensional finite element model.

[0062] In some feasible embodiments, based on the above solution, the performing of computational analysis based on the acceleration response data and the one-dimensional finite element model includes:

[0063] The acceleration response data is used as model input data and input into the one-dimensional finite element model for calculation and analysis to obtain the stress of the gravity dam under the action of an earthquake.

[0064] Continue to refer Figure 1 , step S500, performing safety evaluation of the gravity dam based on the calculation and analysis results.

[0065] In some feasible embodiments, based on the above solution, the safety evaluation of the gravity dam based on the calculation and analysis results includes:

[0066] Based on the comparison and judgment of the stress of the gravity dam under the action of earthquake and the allowable strength value of the dam concrete material;

[0067] When the stress of the gravity dam under the action of an earthquake is less than the allowable strength value of the dam concrete material, the gravity dam is judged to be safe.

[0068] In summary, the technical solution of this application rationally simplifies the gravity dam into a one-dimensional model. Based on the monitored acceleration response data, the stress value of the gravity dam under the action of an earthquake can be very quickly calculated. According to whether the stress value exceeds the allowable strength of concrete, the seismic safety of the dam can be quickly evaluated so that corresponding emergency measures can be taken in a timely manner. It has broad application value.

[0069] The following describes an embodiment of the device of the present application, which can be used to implement a method for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring described in the above embodiment of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method described above.

[0070] Reference Figure 4As shown, according to one embodiment of the present application, a rapid seismic safety assessment device 400 for a gravity dam based on strong vibration monitoring includes:

[0071] The deployment unit 401 is used to deploy strong vibration monitoring points on the gravity dam section;

[0072] An acquisition unit 402 is configured to acquire acceleration response data at the strong vibration monitoring point when an earthquake occurs;

[0073] Establishing unit 403 for establishing a one-dimensional finite element model of the gravity dam section;

[0074] a calculation and analysis unit 404, configured to perform calculation and analysis based on the acceleration response data and the one-dimensional finite element model;

[0075] The evaluation unit 405 is used to perform safety evaluation of the gravity dam based on the calculation and analysis results.

[0076] like Figure 5 As shown, an embodiment of the present application also provides an electronic device 500, including a memory 510, a processor 520, and a computer program 511 stored in the memory 510 and executable on the processor. When the processor 520 executes the computer program 511, the steps of the above-mentioned method for rapid seismic safety assessment of gravity dams based on strong vibration monitoring are implemented.

[0077] Since the electronic device introduced in this embodiment is a device used to implement a gravity dam seismic safety rapid evaluation device based on strong vibration monitoring in the embodiment of this application, based on the method introduced in the embodiment of this application, technical personnel in this field can understand the specific implementation method of the electronic device of this embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of this application will not be introduced in detail here. As long as the equipment used by technical personnel in this field to implement the method in the embodiment of this application falls within the scope of protection of this application.

[0078] During the specific implementation process, when the computer program 511 is executed by the processor, any implementation method in the embodiments corresponding to the first aspect can be implemented.

[0079] Figure 6 A schematic diagram of the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application is shown.

[0080] It should be noted that Figure 6 The computer system 600 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0081] like Figure 6As shown, the computer system 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage part 608 into the random access memory (RAM) 603, such as executing the method described in the above embodiment. Various programs and data required for system operation are also stored in the RAM 603. The CPU 601, ROM 602 and RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0082] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, a mouse, and the like; an output section 607 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 608 including a hard disk; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card or a modem. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. Removable media 611, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 610 as needed, so that computer programs read therefrom can be installed into the storage section 608 as needed.

[0083] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 609, and / or installed from a removable medium 611. When the computer program is executed by the central processing unit (CPU) 601, the various functions defined in the system of the present application are executed.

[0084] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0085] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, program segment, or part of the code, and the above-mentioned module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0086] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. In some cases, the names of these units do not constitute limitations on the units themselves.

[0087] As another aspect, the present application further provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the method for rapid seismic safety assessment of a gravity dam based on strong motion monitoring described in the above embodiment.

[0088] As another aspect, the present application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiments, or may exist independently without being incorporated into the electronic device. The computer-readable medium carries one or more programs, and when executed by the electronic device, the electronic device implements the method for rapid seismic safety assessment of a gravity dam based on strong vibration monitoring described in the above embodiments.

[0089] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the application, the features and functions of two or more modules or units described above can be concretized in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0090] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0091] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in this application. It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of this application is limited only by the appended claims.

Claims

1. A method for rapid seismic safety assessment of gravity dams based on strong vibration monitoring, characterized in that: include: Deploy strong vibration monitoring points on the gravity dam section; When an earthquake occurs, obtaining acceleration response data at the strong vibration monitoring point; Establish a one-dimensional finite element model of the gravity dam section; Performing computational analysis based on the acceleration response data and the one-dimensional finite element model; Conduct safety evaluation of gravity dams based on calculation and analysis results; The step of establishing a one-dimensional finite element model of a gravity dam section includes: Calculate dam body characteristic parameters: Divide the dam body into n-1 dam blocks along the elevation, and calculate the cross-sectional parameters of each cross-section, where n is an integer greater than or equal to 1. Use software to calculate the cross-sectional characteristics of complex irregular cross-sections. Use software to establish the flexibility matrix and mass matrix of the one-dimensional finite element model. Setting boundary conditions: Determine the dynamic interaction between the dam and the foundation based on the Vogt foundation coefficient method, and ignore the influence of foundation damping and mass; Apply additional mass: use the Stegaard added mass model; Applied loads: Static and seismic loads are applied in accordance with current regulations.

2. The method according to claim 1, characterized in that The performing calculation and analysis based on the acceleration response data and the one-dimensional finite element model includes: The acceleration response data is used as model input data and input into the one-dimensional finite element model for calculation and analysis to obtain the stress of the gravity dam under the action of an earthquake.

3. The method according to claim 2, characterized in that The safety evaluation of the gravity dam based on the calculation and analysis results includes: Based on the comparison and judgment of the stress of the gravity dam under the action of earthquake and the allowable strength value of the dam concrete material; When the stress of the gravity dam under the action of an earthquake is less than the allowable strength value of the dam concrete material, the gravity dam is judged to be safe.

4. A computer-readable storage medium, characterized in that The storage medium stores computer instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 3.

5. An electronic device, characterized in that: including memory and processor; The memory is used to store computer instructions; The processor is configured to call the computer instructions stored in the memory so that the electronic device executes the method according to any one of claims 1 to 3.

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