Site-subway tunnel network-building earthquake damage analysis method and device

Abstract

The invention provides a site-subway tunnel network-building earthquake damage analysis method and device, and relates to the technical field of civil engineering structure earthquake resistance. The method comprises the following steps: selecting a typical subway tunnel form of a target city, and establishing a local scale fine site-subway tunnel model; establishing simplified site-subway tunnel dynamic models in different simplified forms; calculating transfer functions of the fine site-subway tunnel model and the simplified site-subway tunnel dynamical model, and determining the simplified site-subway tunnel dynamical model with the highest matching degree and a corresponding parameter determination method; and determining a non-uniform grid division mode according to the subway tunnel position and precision requirements, and completing construction of a seismic source-site-subway tunnel-building group model of the site and the building where the target city is located according to the non-uniform grid division mode and a parameter determination method. By adopting the method, reliable analysis of the three-dimensional coupling effect of the subway tunnel network-soil-building group can be realized on the kilometer scale.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of seismic technology of civil engineering structures, in particular to a site-metro tunnel network-building seismic damage analysis method and device. BACKGROUND

[0002] With the rapid expansion of the scale of urban metro tunnel network in China, its wide coverage, shallow burial depth and spatial staggered characteristics have significantly changed the original seismic wave field. Domestic and foreign earthquakes have shown that the existence of tunnels may amplify the seismic response of adjacent buildings by more than 30%. However, in the analysis of the fine model of metro tunnel-soil-building group in a local site range, the traditional method usually only provides the equivalent seismic wave input field in the free field situation, and mainly uses two-dimensional plane strain analysis, which is difficult to consider the influence of three-dimensional response of tunnel network outside the analysis area. Therefore, in order to scientifically and reasonably analyze the action mechanism of metro tunnel network-soil-building group coupling system, it is necessary to first determine the three-dimensional seismic wave input of the site range from a larger scale ("source-site-metro tunnel network" scale), and further used for nonlinear dynamic analysis of three-dimensional "source-site-metro tunnel network-building" model. However, there is still a lack of related model construction method. SUMMARY

[0003] In order to solve the technical problem that the traditional method usually only provides the equivalent seismic wave input field in the free field situation, and mainly uses two-dimensional plane strain analysis, which is difficult to consider the influence of three-dimensional response of tunnel network outside the analysis area existing in the prior art, the embodiments of the present application provide a site-metro tunnel network-building seismic damage analysis method and device. The technical solution is as follows:

[0004] On the one hand, a site-metro tunnel network-building seismic damage analysis method is provided, which is realized by a site-metro tunnel network-building seismic damage analysis device, and the method comprises:

[0005] S1, selecting a typical metro tunnel form of a target city, and establishing a fine site-metro tunnel model of a local scale.

[0006] S2, setting a plurality of simplified forms, simplifying the fine site-metro tunnel model according to the plurality of simplified forms, and establishing simplified site-metro tunnel dynamic models of different simplified forms.

[0007] S3, respectively calculating the transfer functions of the fine site-metro tunnel model and the simplified site-metro tunnel dynamic models, and determining the simplified site-metro tunnel dynamic model with the highest matching degree and the corresponding parameter determination method.

[0008] S4, determining a non-uniform grid division method according to the location and precision requirement of the subway tunnel, and completing the construction of the source-site-subway tunnel-building group model of the target city according to the non-uniform grid division method and the parameter determination method.

[0009] Optionally, the typical subway tunnel form of the target city in S1 is selected, and a fine site-subway tunnel model of a local scale is established, including:

[0010] S11, classifying the subway tunnels of the target city according to typical characteristics, and selecting the typical subway tunnel form of the target city according to the classification result.

[0011] S12, establishing a fine site-subway tunnel model with a model grid size of a decimeter level for the typical subway tunnel form of the target city; wherein the fine site-subway tunnel model includes the structural form, the buried depth, the surrounding site characteristics, the structural material properties, the type, the local site soil layer distribution, and the wave speed, the damping and the nonlinear characteristics of each layer of soil of the typical subway tunnel.

[0012] Optionally, the multiple simplified forms in S2 are set, the fine site-subway tunnel model is simplified according to the multiple simplified forms, and the simplified site-subway tunnel dynamic models of different simplified forms are established, including:

[0013] S21, setting multiple simplified forms according to the characteristic parameters of the typical subway tunnel form.

[0014] S22, establishing the simplified site-subway tunnel dynamic models of different simplified forms according to the multiple simplified forms through a finite element software; wherein the grid size of the simplified site-subway tunnel dynamic model is at a level of 10m.

[0015] Optionally, the multiple simplified forms include:

[0016] Ignoring the internal holes of the subway tunnel, the subway tunnel is simplified as an equal-section circular solid.

[0017] Reserving the internal holes of the subway tunnel, the segment and bolt structure is equivalent to a continuous circular thin wall.

[0018] Simplifying the subway tunnel as a rectangular solid.

[0019] Reserving the internal holes of the subway tunnel, the support structure is simplified as a rectangular thin wall.

[0020] Optionally, the transfer functions of the fine site-subway tunnel model and the simplified site-subway tunnel dynamic model are calculated respectively in S3, the simplified site-subway tunnel dynamic model with the highest matching degree and the corresponding parameter determination method are determined, including:

[0021] The same excitation is applied to the fine site-metro tunnel model and the simplified site-metro tunnel dynamic model respectively to obtain monitoring data, and the dynamic response transfer functions from the ground to the bottom of the tunnel of the fine site-metro tunnel model and the simplified site-metro tunnel dynamic model are calculated according to the monitoring data.

[0022] The dynamic response transfer functions of the fine site-metro tunnel model are taken as the benchmark, the matching degrees of the simplified site-metro tunnel dynamic models of different simplified forms and the fine site-metro tunnel model are quantified by mean square deviation, and the matching accuracy is optimized by adjusting the core material parameters, and the simplified site-metro tunnel dynamic model with the highest matching degree and the corresponding parameter determination method are screened out.

[0023] Optionally, in S4, the non-uniform grid division method is determined according to the metro tunnel position and the accuracy requirement, and the construction of the source-site-metro tunnel-building group model of the site and the building where the target city is located is completed according to the non-uniform grid division method and the parameter determination method, including:

[0024] S41, the non-uniform grid division method is determined according to the metro tunnel position and the accuracy requirement, and the grid division of the source-site-metro tunnel-building group model to be established is performed according to the non-uniform grid division method.

[0025] S42, based on the divided grid and the parameter determination method, the material and dynamic behavior properties of the site, the source, the metro tunnel and the building group are sequentially assigned, and the construction of the source-site-metro tunnel-building group model of the site and the building where the target city is located is completed.

[0026] On the other hand, a site-metro tunnel network-building seismic damage analysis device is provided, which is applied to a site-metro tunnel network-building seismic damage analysis method, and the device includes:

[0027] The fine model establishment module is configured to select a typical metro tunnel form of a target city and establish a fine site-metro tunnel model of a local scale.

[0028] The simplified model establishment module is configured to set a plurality of simplified forms, simplify the fine site-metro tunnel model according to the plurality of simplified forms, and establish simplified site-metro tunnel dynamic models of different simplified forms.

[0029] The parameter determination module is configured to calculate the transfer functions of the fine site-metro tunnel model and the simplified site-metro tunnel dynamic model respectively, and determine the simplified site-metro tunnel dynamic model with the highest matching degree and the corresponding parameter determination method.

[0030] The output module is configured to determine a non-uniform grid division manner according to the subway tunnel position and the precision requirement, and to complete construction of a source-site-subway tunnel-building group model of the target city according to the non-uniform grid division manner and a parameter determination method.

[0031] Optionally, the fine model establishing module is further configured to:

[0032] S11, classifying subway tunnels of the target city according to typical characteristics, and selecting a typical subway tunnel form of the target city according to the classification result.

[0033] S12, establishing a fine site-subway tunnel model with a grid size of decimeter level for the typical subway tunnel form of the target city; wherein the fine site-subway tunnel model includes a structure form, a buried depth, surrounding site characteristics, structural material properties, a type, local site soil layer distribution, and wave speed, damping and nonlinear characteristics of each layer of soil of the typical subway tunnel.

[0034] Optionally, the simplified model establishing module is further configured to:

[0035] S21, setting a plurality of simplified forms according to characteristic parameters of the typical subway tunnel form.

[0036] S22, establishing simplified site-subway tunnel dynamic models of different simplified forms according to the plurality of simplified forms through a finite element software; wherein a grid size of the simplified site-subway tunnel dynamic models is at a level of 10 m.

[0037] Optionally, the plurality of simplified forms include:

[0038] Ignoring internal holes of the subway tunnel, the subway tunnel is simplified as an equal-section circular solid.

[0039] Reserving internal holes of the subway tunnel, a segment and a bolt structure are equivalent to a continuous circular thin wall.

[0040] The subway tunnel is simplified as a rectangular solid.

[0041] Reserving internal holes of the subway tunnel, a supporting structure is simplified as a rectangular thin wall.

[0042] Optionally, the parameter determination module is further configured to:

[0043] The same excitation is applied to the fine site-subway tunnel model and the simplified site-subway tunnel dynamic model respectively to obtain monitoring data, and a dynamic response transfer function from a ground surface to a tunnel bottom of the fine site-subway tunnel model and the simplified site-subway tunnel dynamic model is calculated according to the monitoring data.

[0044] Taking the dynamic response transfer function of the fine site-metro tunnel model as a benchmark, the matching degrees of different simplified site-metro tunnel dynamic models and the fine site-metro tunnel model are quantified by mean square deviation, and the matching accuracy is optimized by adjusting the core material parameters, and the simplified site-metro tunnel dynamic model with the highest matching degree and the corresponding parameter determination method are screened out.

[0045] Optionally, the output module is further used for:

[0046] S41, according to the metro tunnel position and the accuracy requirement, determining a non-uniform grid division mode, and dividing the grid of the to-be-established seismic source-site-metro tunnel-building group model according to the non-uniform grid division mode.

[0047] S42, based on the divided grid and the parameter determination method, sequentially assigning the site, the seismic source, the metro tunnel and the building material and dynamic behavior attribute, and completing the construction of the seismic source-site-metro tunnel-building group model of the site and the building where the target city is located.

[0048] On the other hand, a site-metro tunnel network-building seismic damage analysis device is provided, which comprises a processor and a memory having computer readable instructions stored thereon, wherein the computer readable instructions are executed by the processor to implement any one of the above site-metro tunnel network-building seismic damage analysis methods.

[0049] On the other hand, a computer readable storage medium is provided, which stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement any one of the above site-metro tunnel network-building seismic damage analysis methods.

[0050] The technical scheme provided by the embodiment of the application has at least the following beneficial effects:

[0051] In the application, relying on the metro tunnel network three-dimensional simplified dynamic model for city-scale analysis, coupling the seismic source, the site, the metro tunnel network and the building group model, relying on high-performance computing, the model precision advantage can be fully utilized to realize efficient and reliable analysis of the three-dimensional coupling of the metro tunnel network-soil-building group, and the reliability and scientificity of the city area seismic risk assessment are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0053] Figure 1 is a site-metro tunnel network-building earthquake damage analysis method flowchart provided by an embodiment of the present application;

[0054] Figure 2 is a site-metro tunnel network-building earthquake damage analysis device block diagram provided by an embodiment of the present application;

[0055] Figure 3 is a structural schematic diagram of a site-metro tunnel network-building earthquake damage analysis device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the present application will be described below with reference to the drawings.

[0057] In the embodiments of the present application, the words such as "example", "for example" are used to represent as an example, illustration or description. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the word "example" is intended to present the concept in a specific manner. In addition, in the embodiments of the present application, the meaning expressed by "and / or" can be both, or can be one of the two.

[0058] In the embodiments of the present application, "image" and "picture" can be used interchangeably at times. It should be pointed out that when the distinction is not emphasized, the meanings expressed are consistent. "Of", "corresponding" and "corresponding" can be used interchangeably at times. It should be pointed out that when the distinction is not emphasized, the meanings expressed are consistent.

[0059] In the embodiments of the present application, sometimes the subscript such as W1 can be written in the form of non-subscript such as W1. When the distinction is not emphasized, the meanings expressed are consistent.

[0060] In order to make the technical problems, technical solutions and advantages to be solved by the present application more clear, the following will be described in detail with reference to the drawings and specific embodiments.

[0061] The embodiments of the present application provide a site-metro tunnel network-building earthquake damage analysis method. The method can be implemented by a site-metro tunnel network-building earthquake damage analysis device, which can be a terminal or a server. Figure 1 As shown in the site-metro tunnel network-building earthquake damage analysis method flowchart, the processing flow of the method can include the following steps:

[0062] S1, selecting a typical subway tunnel form of a target city, and establishing a fine site-subway tunnel model in a local scale.

[0063] Optionally, the step S1 can include the following steps S11-S12:

[0064] S11, classifying subway tunnels of the target city according to typical characteristics, and selecting a typical subway tunnel form of the target city according to the classification result.

[0065] S12, establishing a fine site-subway tunnel model with a model grid size in a decimeter level for the typical subway tunnel form of the target city; wherein the fine site-subway tunnel model includes a structure form, a buried depth, surrounding site characteristics, structure material properties, a type, local site soil layer distribution, and wave speed, damping and nonlinear characteristics of each layer of soil body of the typical subway tunnel.

[0066] In an available implementation, the city subway tunnels are classified according to typical characteristics, a typical representative is selected, and a fine subway tunnel model is established; wherein the fine subway tunnel model includes: a structure form, a buried depth of the typical subway tunnel, and surrounding site characteristics including structure material properties, a type, local site soil layer distribution, and wave speed, damping and nonlinear characteristics of each layer of soil body. The model grid size is in a decimeter level.

[0067] Specifically, the typical subway tunnel form of the target city is selected, the typical representative selection standard (such as a typical subway tunnel type) of the site-subway tunnel network-building seismic damage analysis is determined, the city subway tunnels are classified according to typical characteristics such as structure form and buried depth, and the typical representative capable of representing the overall characteristics of the regional tunnel is screened out.

[0068] The fine site-subway tunnel model in a local scale is established, the model construction dimension is determined: the geometric parameters match the actual size of the typical tunnel, the material properties include the tunnel structure parameters such as concrete strength and elastic modulus, and the coupling relationship (such as the contact interface characteristics) between the tunnel and the surrounding site is defined; the local site soil layer distribution data is collected, the wave speed, damping and nonlinear characteristic parameters of each layer of soil body are determined, the model is divided in a decimeter level grid size, and finally the complete fine model including the tunnel and the site is formed, thereby providing basic data support for subsequent site-subway tunnel network-building seismic damage analysis.

[0069] S2, setting a plurality of simplified forms, simplifying the fine site-subway tunnel model according to the plurality of simplified forms, and establishing a simplified site-subway tunnel dynamics model in different simplified forms.

[0070] Optionally, the step S2 can include the following steps S21-S22:

[0071] S21, set multiple simplified forms according to the characteristic parameters of the typical subway tunnel form.

[0072] S22, establish simplified site-subway tunnel dynamic models of different simplified forms according to the multiple simplified forms by using finite element software; wherein the grid size of the simplified site-subway tunnel dynamic model is at the level of 10m.

[0073] In a feasible implementation, the simplified site-subway tunnel dynamic model is a simplified numerical model for balancing calculation efficiency and local precision, which is suitable for urban site-subway tunnel network-building seismic damage analysis. By integrating typical tunnel characteristics, site soil layer properties and grid scale optimization, the influence of different simplified dimensions on tunnel-site dynamic transmission characteristics is quantified, and an efficient and accurate local simplified scheme is provided for overall model construction.

[0074] Further, the construction of the simplified site-subway tunnel dynamic model needs to be carried out around the characteristic parameters such as shape, hole, wall thickness, etc. Different simplified forms can include: simplifying the tunnel according to different shapes, whether to retain holes, whether to establish a thin wall, etc. The grid size of all simplified models is uniformly set to the level of 10m.

[0075] Specifically, the core parameters and applicable scenarios of the four simplified forms are as follows:

[0076] Simplified form 1 (circular hole-free solid model): ignore the internal holes of the tunnel and simplify the tunnel into an equal-section circular solid.

[0077] Simplified form 2 (circular hole-retaining model): retain the internal holes of the tunnel and only equivalent the “segment + bolt” structure to a continuous circular thin wall.

[0078] Simplified form 3 (rectangular hole-free solid model): simplify the tunnel into a rectangular solid.

[0079] Simplified form 4 (rectangular hole-retaining thin wall model): retain the internal holes of the tunnel and simplify the support structure into a rectangular thin wall.

[0080] S3, respectively calculate the transfer functions of the fine site-subway tunnel model and the simplified site-subway tunnel dynamic model, and determine the simplified site-subway tunnel dynamic model with the highest matching degree and the corresponding parameter determination method.

[0081] Optionally, the above step S3 can include the following steps S31-S32:

[0082] S31, the same excitation is applied to the fine site-metro tunnel model and the simplified site-metro tunnel dynamic model respectively, the monitoring data is obtained, and the dynamic response transfer function from the ground to the bottom of the tunnel of the fine site-metro tunnel model and the simplified site-metro tunnel dynamic model is calculated.

[0083] S32, taking the dynamic response transfer function of the fine site-metro tunnel model as the reference, the matching degree of the simplified site-metro tunnel dynamic model with different simplification forms and the fine site-metro tunnel model is quantified by mean square deviation, and the matching accuracy is optimized by adjusting the core material parameter (tunnel elastic modulus), and the scheme with the smallest mean square deviation is selected as the optimal parameter determination method of the simplified model.

[0084] In a feasible implementation, the fine site-metro tunnel model and the above-mentioned four simplified models are established by finite element software respectively, the same sinusoidal wave excitation (frequency range 0.1-20Hz) is applied to all models, the dynamic response transfer function from the ground to the bottom of the tunnel is calculated, taking the transfer function of the fine model as the reference, the matching degree of the simplified model is quantified by mean square deviation, the material elastic modulus is adjusted, and the simplified model with the highest matching degree and the corresponding parameter determination method are selected.

[0085] Specifically, according to the dynamic characteristic data of the fine site-metro tunnel model and the simplified site-metro tunnel model, the fine site-metro tunnel model is established in ABAQUS, and the simplified site-metro tunnel model is established in SPEED, and the most matched simplified model parameter determination method is obtained by executing the transfer function calculation and parameter optimization process.

[0086] Among them, ABAQUS is suitable for local scale fine model analysis, and SPEED can fully consider the seismic wave propagation process in large-scale urban area. The transfer function calculation and parameter optimization process refers to the technical path of quantifying the dynamic consistency of the fine model and the simplified model and selecting the optimal simplified parameter relying on the technical advantages of various analysis software in dynamic modeling and frequency domain analysis, and the core is to realize the accurate calculation of the transfer function by unifying the excitation loading, data monitoring and frequency domain conversion standard, and then adjust the key parameters by combining parameter iteration, and finally balance the calculation accuracy and efficiency of the simplified model, and provide reliable simplified scheme for the construction of city-level overall model.

[0087] For example, the process can be to apply the same Ricker wavelet excitation to the fine model and the simplified model, calculate the "surface-tunnel bottom" acceleration transfer function, quantify the matching degree using mean square error, adjust the core material parameters to optimize the matching accuracy, and finally determine the parameter selection rule corresponding to each simplified model - assuming that there are 4 simplified forms for a certain type of tunnel, and the mean square error of simplified form 2 is the smallest, and the matching degree is optimal after adjusting the elastic modulus and damping ratio, then determine that "simplified form 2 + specific parameter combination" is the parameter determination method for this type of tunnel.

[0088] It should be noted that by establishing multi-dimensional simplified models and selecting the optimal scheme, the accuracy deviation of a single simplified form can be avoided, and the calculation amount of the city-level model can be greatly reduced, laying a foundation for efficient calculation of the "source-site-metro tunnel network-building group" overall model and improving the practicality and accuracy of site-metro tunnel network-building seismic damage analysis.

[0089] By clearly defining the applicable scenarios and core parameters of the four simplified forms, combined with transfer function matching verification, the optimal simplified scheme for different types of tunnels can be accurately determined, ensuring consistency between local dynamic characteristics and actual working conditions, and providing an efficient simplification path for the construction of city-level large-scale models, and providing key support for the reliability of subsequent seismic response analysis results.

[0090] By clearly defining the transfer function calculation standard and focusing on core parameter adjustment, a simplified scheme that balances accuracy and efficiency can be quickly selected, providing clear basis for the differential simplification of different types of tunnels, and further ensuring the accuracy of site-metro tunnel network-building seismic damage analysis.

[0091] S4, determine the non-uniform grid division method according to the location and precision requirement of the metro tunnel, and complete the construction of the source-site-metro tunnel-building group model of the target city according to the non-uniform grid division method and the parameter determination method.

[0092] Optionally, the above step S4 can include the following steps S41-S42:

[0093] S41, determine the non-uniform grid division method (such as 200m grid in the source area, 50m grid in the core area, and 10m grid around the tunnel / building) according to the location of the tunnel network and the precision requirement of each module of the model, and divide the grid of the to-be-established source-site-metro tunnel-building group model according to the non-uniform grid division method.

[0094] S42, based on the divided grid and the parameter determination method, sequentially assign the material and dynamic behavior properties of the site, source, metro tunnel, and building group, and complete the construction of the source-site-metro tunnel-building group model of the target city.

[0095] In an implementable embodiment, the "seismic source-site-metro tunnel network-building" model comprises topographic information within an analysis range, seismic source position, site velocity structure, density and damping, building distribution, building height and foundation material information, metro tunnel stratum and position, and metro tunnel simplified parameters.

[0096] The "seismic source-site-metro tunnel network-building group" model refers to a numerical model that realizes full-chain coupling of "seismic source energy transmission-site filtering and amplification-tunnel structure response-building damage evolution" in site-metro tunnel network-building seismic damage analysis, integrates target city geography, engineering and seismic source data, balances the calculation efficiency of the city-level model and the analysis accuracy of the key area, and provides a complete carrier for large-scale seismic risk assessment.

[0097] Specifically, six types of key information (such as topography, seismic source, site, building, tunnel and simplified parameters) are collected first (such as topography using 1:5000 DEM data, seismic source determining potential fault parameters), then combined with the non-continuous Galerkin method, the model is divided according to "seismic source coarse grid, core area fine grid, tunnel / building periphery encrypted grid", and finally the material properties are assigned in sequence to form a full-factor coupling model.

[0098] It should be noted that by combining the tunnel network position and the grid division depth through the model, the transmission path of the seismic wave between "underground-tunnel-surface building" can be accurately restored, the seismic response differences of different regions can be quantified, and scientific basis can be provided for subsequent tunnel structure safety assessment, building damage prediction and city seismic planning.

[0099] The present application provides a large-scale "seismic source-site-metro tunnel network-building" site-metro tunnel network-building seismic damage analysis model construction method, which breaks through the precision limitation of large-scale analysis of "seismic source-site-metro tunnel network" scale, and establishes a tunnel network dynamics model suitable for wideband seismic wave analysis under the premise of ensuring the balance of calculation accuracy and efficiency, providing more detailed and scientific basis for seismic design of high-tunnel-density cities.

[0100] In the embodiment of the present application, relying on the metro tunnel network three-dimensional simplified dynamics model for city-scale analysis, coupling the seismic source, site, metro tunnel network, and building group model, relying on high-performance computing, the model precision advantage can be fully utilized, the efficient and reliable analysis of the three-dimensional coupling of metro tunnel network-soil-building group can be realized, and the reliability and scientificity of the city area seismic risk assessment can be significantly improved.

[0101] Figure 2is a field-metro tunnel network-building earthquake disaster analysis device block diagram according to an exemplary embodiment, which is used for a field-metro tunnel network-building earthquake disaster analysis method. Referring to Figure 2 The device comprises a fine model establishing module 310, a simplified model establishing module 320, a parameter determining module 330 and an output module 340. Wherein:

[0102] The fine model establishing module 310 is used for selecting a typical metro tunnel form of a target city, and establishing a fine field-metro tunnel model of a local scale.

[0103] The simplified model establishing module 320 is used for setting a plurality of simplified forms, simplifying the fine field-metro tunnel model according to the plurality of simplified forms, and establishing simplified field-metro tunnel dynamic models of different simplified forms.

[0104] The parameter determining module 330 is used for respectively calculating transfer functions of the fine field-metro tunnel model and the simplified field-metro tunnel dynamic models, and determining a simplified field-metro tunnel dynamic model with the highest matching degree and a corresponding parameter determining method.

[0105] The output module 340 is used for determining a non-uniform grid division mode according to a metro tunnel position and precision requirement, and completing construction of a seismic source-field-metro tunnel-building group model of a field where the target city is located and buildings according to the non-uniform grid division mode and the parameter determining method.

[0106] In the embodiment of the present application, the metro tunnel network three-dimensional simplified dynamic model facing city scale analysis is coupled with a seismic source, a field, a metro tunnel network and a building group model, and relies on high-performance computing, so that the model precision advantage can be fully exerted, efficient and reliable analysis of three-dimensional coupling of the metro tunnel network-soil-building group can be realized, and the reliability and scientificity of city area earthquake disaster risk assessment can be significantly improved.

[0107] Figure 3 is a structural schematic diagram of a field-metro tunnel network-building earthquake disaster analysis equipment provided by the embodiment of the present application, as Figure 3 shown, the field-metro tunnel network-building earthquake disaster analysis equipment can comprise the field-metro tunnel network-building earthquake disaster analysis device shown in the above Figure 2 Optionally, the field-metro tunnel network-building earthquake disaster analysis equipment 410 can comprise the first processor 2001.

[0108] Optionally, the field-metro tunnel network-building earthquake disaster analysis equipment 410 can further comprise the memory 2002 and the transceiver 2003.

[0109] The first processor 2001 is connected with the memory 2002 and the transceiver 2003, for example, through a communication bus.

[0110] The following will be specifically introduced Figure 3 The various components of the site-metro tunnel network-building earthquake damage analysis device 410 will be specifically introduced:

[0111] The first processor 2001 is the control center of the site-metro tunnel network-building earthquake damage analysis device 410, which can be one processor or a plurality of processing elements. For example, the first processor 2001 is one or more central processing units (CPUs), which can also be application specific integrated circuits (ASICs), or one or more integrated circuits configured to implement embodiments of the present application, such as one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGA).

[0112] Alternatively, the first processor 2001 can execute various functions of the site-metro tunnel network-building earthquake damage analysis device 410 by running or executing software programs stored in the memory 2002 and calling data stored in the memory 2002.

[0113] In a specific implementation, as an embodiment, the first processor 2001 can include one or more CPUs, such as CPU0 and CPU1 shown in FIG. Figure 3

[0114] In a specific implementation, as an embodiment, the site-metro tunnel network-building earthquake damage analysis device 410 can also include a plurality of processors, such as the first processor 2001 and the second processor 2004 shown in FIG. Figure 3 Each of these processors can be a single-CPU or a multi-CPU. The processor here can refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0115] The memory 2002 is used to store software programs for implementing the schemes of the present application, and is controlled by the first processor 2001 for execution. The specific implementation can refer to the above method embodiments, which will not be repeated here.

[0116] ​Optionally, the memory 2002 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 2002 may be integrated with the first processor 2001 or may exist independently, and may be connected via the interface circuit of the site-subway tunnel network-building seismic damage analysis device 410. Figure 3 (Not shown in the image) is coupled to the first processor 2001, and this embodiment of the invention does not specifically limit this.

[0117] The transceiver 2003 is used to communicate with network devices or with terminal devices.

[0118] Alternatively, transceiver 2003 may include a receiver and a transmitter. Figure 3 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function.

[0119] Optionally, the transceiver 2003 can be integrated with the first processor 2001 or exist independently, and can be connected via the interface circuit of the site-subway tunnel network-building seismic damage analysis equipment 410. Figure 3 (Not shown in the image) is coupled to the first processor 2001, and this embodiment of the invention does not specifically limit this.

[0120] It should be noted that, Figure 3 The structure of the site-subway tunnel network-building seismic damage analysis device 410 shown in the diagram does not constitute a limitation on the router. Actual knowledge structure identification devices may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0121] Furthermore, the technical effects of the site-subway tunnel network-building seismic damage analysis equipment 410 can be referred to the technical effects of the site-subway tunnel network-building seismic damage analysis method described in the above method embodiments, and will not be repeated here.

[0122] It should be appreciated that the first processor 2001 in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0123] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

[0124] The above-described embodiments can be implemented in whole or in part by software, hardware (such as a circuit), firmware, or any combination thereof. When implemented in software, the above-described embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. containing one or more available medium collections. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state disk.

[0125] It should be understood that the term "and / or" herein merely describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In addition, the character " / " herein generally represents that the associated objects before and after it are in an "or" relationship, but it can also represent an "and / or" relationship, which can be understood according to the context before and after it.

[0126] In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0127] It should be understood that in various embodiments of the present application, the size of the sequence number of the above-described processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0128] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0129] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the devices, apparatuses and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0130] In several embodiments provided by the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0131] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0132] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0133] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0134] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for site-metro tunnel network-building seismic damage analysis, characterized in that, The method comprises: S1, selecting a typical subway tunnel form of a target city to establish a fine site-subway tunnel model of a local scale; S2, setting multiple simplified forms, simplifying the fine site-subway tunnel model according to the multiple simplified forms, and establishing simplified site-subway tunnel dynamic models of different simplified forms; S3, respectively calculating the transfer functions of the fine site-subway tunnel model and the simplified site-subway tunnel dynamic models, and determining the simplified site-subway tunnel dynamic model with the highest matching degree and the corresponding parameter determination method; S4, determining a non-uniform grid division method according to the subway tunnel position and the accuracy requirement, and completing the construction of a source-site-subway tunnel-building group model of the site and the building in the target city according to the non-uniform grid division method and the parameter determination method.

2. The site-metro tunnel network-structure seismic damage analysis method of claim 1, wherein, The S1 comprises: S11, classifying the subway tunnels of the target city according to typical characteristics, and selecting a typical subway tunnel form of the target city according to the classification result; S12, establishing a fine site-subway tunnel model with a model grid size of a decimeter level for the typical subway tunnel form of the target city; wherein the fine site-subway tunnel model comprises the structural form, the buried depth, the surrounding site characteristics, the structural material properties, the type, the local site soil layer distribution, and the wave speed, the damping and the nonlinear characteristics of each layer of soil of the typical subway tunnel.

3. The site-metro tunnel network-structure seismic hazard analysis method of claim 1, wherein, The S2 comprises: S21, setting multiple simplified forms according to the characteristic parameters of the typical subway tunnel form; S22, establishing simplified site-subway tunnel dynamic models of different simplified forms according to the multiple simplified forms through a finite element software; wherein the grid size of the simplified site-subway tunnel dynamic model is in the order of 10m.

4. The site-metro tunnel network-structure seismic hazard analysis method of claim 3, wherein, The multiple simplified forms comprise: ignoring the internal holes of the subway tunnel, and simplifying the subway tunnel into an equal-section circular solid; retaining the internal holes of the subway tunnel, and equivalently simplifying the segment and bolt structure into a continuous circular thin wall; simplifying the subway tunnel into a rectangular solid; retaining the internal holes of the subway tunnel, and simplifying the supporting structure into a rectangular thin wall.

5. The site-metro tunnel network-structure seismic hazard analysis method of claim 1, wherein, The S3 comprises: respectively applying the same excitation to the fine site-subway tunnel model and the simplified site-subway tunnel dynamic model to obtain monitoring data, and calculating the dynamic response transfer functions from the ground surface to the tunnel bottom of the fine site-subway tunnel model and the simplified site-subway tunnel dynamic model according to the monitoring data; The dynamic response transfer function of the fine site-metro tunnel model is taken as a benchmark, the matching degrees of different simplified site-metro tunnel dynamic models and the fine site-metro tunnel model are quantified by mean square deviation, and the matching accuracy is optimized by adjusting the core material parameters, so that the simplified site-metro tunnel dynamic model with the highest matching degree and the corresponding parameter determination method are screened out.

6. The site-metro tunnel network-structure seismic hazard analysis method of claim 1, wherein, In the S4, the non-uniform grid division mode is determined according to the metro tunnel position and the accuracy requirement, and the construction of the source-site-metro tunnel-building group model of the site and the buildings in the target city is completed according to the non-uniform grid division mode and the parameter determination method, including: S41, the non-uniform grid division mode is determined according to the metro tunnel position and the accuracy requirement, and the grid division of the to-be-established source-site-metro tunnel-building group model is performed according to the non-uniform grid division mode; S42, based on the divided grid and the parameter determination method, the material and dynamic behavior properties of the site, the source, the metro tunnel and the building group are sequentially assigned, and the construction of the source-site-metro tunnel-building group model of the site and the buildings in the target city is completed.

7. A site-metro tunnel network-building seismic damage analysis device for implementing the site-metro tunnel network-building seismic damage analysis method according to any one of claims 1 to 6, characterized by, The device comprises: The fine model establishment module is configured to select a typical metro tunnel form of a target city and establish a fine site-metro tunnel model of a local scale. The simplified model establishment module is configured to set multiple simplified forms, simplify the fine site-metro tunnel model according to the multiple simplified forms, and establish simplified site-metro tunnel dynamic models of different simplified forms. The parameter determination module is configured to calculate the transfer functions of the fine site-metro tunnel model and the simplified site-metro tunnel dynamic models respectively, and determine the simplified site-metro tunnel dynamic model with the highest matching degree and the corresponding parameter determination method. The output module is configured to determine a non-uniform grid division mode according to the metro tunnel position and the accuracy requirement, and complete the construction of the source-site-metro tunnel-building group model of the site and the buildings in the target city according to the non-uniform grid division mode and the parameter determination method.

8. The site-metro tunnel network-structure seismic hazard analysis apparatus according to claim 7, wherein The construction of the source-site-metro tunnel-building group model of the site and the buildings in the target city according to the non-uniform grid division mode and the parameter determination method comprises: S41, the non-uniform grid division mode is determined according to the metro tunnel position and the accuracy requirement, and the grid division of the to-be-established source-site-metro tunnel-building group model is performed according to the non-uniform grid division mode; S42, based on the divided grid and the parameter determination method, the material and dynamic behavior properties of the site, the source, the metro tunnel and the building group are sequentially assigned, and the construction of the source-site-metro tunnel-building group model of the site and the buildings in the target city is completed.

9. A site-metro tunnel network-structure seismic damage analysis apparatus, characterized by, The site-metro tunnel network-building seismic damage analysis device comprises: A processor; A memory having computer readable instructions stored thereon, wherein the computer readable instructions are executed by the processor to implement the method of any one of claims 1 to 6.

10. A computer readable storage medium, characterized in that, The computer readable storage medium stores program codes, and the program codes can be invoked by the processor to execute the method in any one of claims 1 to 6.

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