A seismic simulation method, device and medium for concrete pile foundations in river valley areas

Abstract

The present invention provides a seismic simulation method, device and medium for concrete pile foundations in river valley areas, which relates to the technical field of seismic simulation of concrete pile foundations. The method includes: obtaining the amplification effect relationship S of seismic action between preset river valley strata; determining the amplification effect value WS of seismic action between the corresponding river valley strata in the river valley area according to a number of actual formation parameters in the river valley area and S; establishing an overall model W of the river valley area according to a number of actual formation parameters in the river valley area and the parameters of the concrete pile foundations in the river valley area; assigning the actual constitutive relationship corresponding to the concrete pile foundations and WS to W; obtaining a seismic wave list of each preset type to obtain a seismic wave list set A; using A to simulate W to determine the weak positions of the concrete pile foundations in the river valley area. The present invention makes the simulation of the concrete pile foundations more in line with the actual environment, so as to accurately determine the weak positions of the concrete pile foundations.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic simulation of concrete pile foundations, and particularly to a method, device and medium for seismic simulation of concrete pile foundations in river valley areas. Background Art

[0002] A river valley is a trough-shaped area formed on the earth's surface by river geological processes and is an erosional landform formed during the flow of a river; in recent years, a large number of concrete pile foundations have emerged in the construction of coastal and riverside cities, which are built adjacent to the river valley terrain. Due to the seismic amplification effect of the river valley terrain, it will pose a threat to the seismic safety of structures near the river valley; in order to prevent the concrete pile foundations in the river valley area from being damaged by river geological processes, it is necessary to maintain and strengthen the concrete pile foundations in the river valley area regularly; however, due to the large number of concrete pile foundations in the river valley area, if each concrete pile foundation in the river valley area is comprehensively reinforced, the cost will be relatively high. Therefore, how to determine the weak positions of the concrete pile foundations in the river valley area to reinforce the weak positions, thereby reducing the maintenance cost, has become a technical problem to be solved urgently. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is as follows:

[0004] According to the first aspect of the present application, there is provided a method for seismic simulation of concrete pile foundations in river valley areas, the method comprising the following steps:

[0005] S100, obtaining the amplification effect relationship S of seismic action between preset river valley strata; wherein, S is used to determine the corresponding amplification effect value of the river valley on seismic action according to a plurality of formation parameters in the river valley area;

[0006] S200, determining the amplification effect value WS of seismic action between the corresponding river valley strata in the river valley area according to a plurality of actual formation parameters in the river valley area and S;

[0007] S300, establishing an overall model W of the river valley area according to a plurality of actual formation parameters in the river valley area and the parameters of the concrete pile foundations in the river valley area;

[0008] S400, assigning the actual constitutive relationship corresponding to the concrete pile foundation and WS to W;

[0009] S500, obtaining a seismic wave list of each preset type to obtain a seismic wave list set A = (A 1 , A 2 , …, A i , …, A n ), i = 1, 2, …, n; wherein, A i is the seismic wave list of the i-th preset type, and n is the number of preset types of seismic waves; A iincluding the i-th preset type of seismic waves with several different frequencies;

[0010] S600, use A to simulate W to determine the weak positions of concrete pile foundations in the river valley area.

[0011] Furthermore, S is obtained through the following steps:

[0012] S110, obtain the river valley stratum models corresponding to different stratum types to obtain the river valley stratum model list set B = (B 1 , B 2 , …, B j , …, B m ), j = 1, 2, …, m; where B j is the river valley stratum model list corresponding to the j-th stratum type, and m is the number of stratum types; B j = (B j，1 , B j，2 , …, B j，p , …, B j，q ), p = 1, 2, …, q; where B j，p is the p-th river valley stratum model corresponding to the j-th stratum type, and q is the number of river valley stratum models corresponding to the stratum type; the stratum thickness and the ratio of the river valley width to the river valley depth corresponding to any two river valley stratum models are not exactly the same;

[0013] S120, obtain the test seismic wave list α = (α 1 , α 2 , …, α x , …, α y ), x = 1, 2, …, y; where α x is the x-th test seismic wave, and y is the number of test seismic waves; the peak accelerations of any two test seismic waves in α are different;

[0014] S130, place B j，p on the shaking table, apply each test seismic wave in α for testing to obtain the seismic response group list μ j，p corresponding to B j，p = (μ j，p_1 , μ j，p_2 , …, μ j，p_x , …, μ j，p_y ); where μ j，p_x is the seismic response group measured by placing B j，p on the shaking table and applying α x ; μ j，p_x = (λ j，p_x , η j，p_x ); λ j，p_x is the seismic response obtained by placing B j，p on the shaking table and applying αx Seismic response of the strata in front of the river valley measured, η j，p_x To place B j，p On the shaking table and apply α x Seismic response of the strata behind the river valley measured;

[0015] S140, according to μ j，p , determine B j，p The amplification effect of the corresponding river valley on seismic action [θ j，p =[η j，p_x / [λ j，p_x ; Furthermore, obtain the amplification effect of the river valley on seismic action for each river valley stratum model in B under each test seismic wave in α;

[0016] S150, conduct a regression analysis on the amplification effect of the river valley on seismic action for each river valley stratum model in B under each test seismic wave in α to obtain S.

[0017] Furthermore, step S600 includes the following steps:

[0018] S610, obtain A i =(A i，1 , A i，2 , …, A i，u , …, A i，v ), u = 1, 2, …, v; where A i，u is the seismic wave with the u-th frequency in the i-th preset type of seismic wave, and v is the number of seismic waves with different frequencies in each preset type of seismic wave;

[0019] S620, obtain the first preset value H = 1 and the second preset value G = 1;

[0020] S630, use A H，G to simulate W to obtain the stress nephogram YW of the concrete pile foundation in W under the action of A H，G and the corresponding seismic amplification effect of the river valley; H，G ;

[0021] S640, if there is no damaged position on YW H，G , determine that the seismic resistance effect of the concrete pile foundation in the river valley area on A H，G meets the preset conditions; otherwise, determine the damaged position on YW H，G as the weak position of the concrete pile foundation in the river valley area, and determine A H，G as the target seismic wave corresponding to the concrete pile foundation in the river valley area;

[0022] S650, if G < v, obtain G = G + 1; enter S630; otherwise enter S660;

[0023] In S660, if H < n, then obtain H = H + 1; enter S630; otherwise, jump out of the current process.

[0024] Furthermore, the preset types of seismic waves include: seismic waves corresponding to frequent earthquakes, seismic waves corresponding to basic earthquakes, and seismic waves corresponding to rare earthquakes.

[0025] Furthermore, step S400 includes the following steps:

[0026] In S410, set the contact surface between the soil and the concrete pile foundation as surface - to - surface contact;

[0027] In S420, set the surface of the concrete pile foundation as the master contact surface and the surface of the soil as the slave contact surface;

[0028] In S430, use the contact algorithm of the penalty function and the discrete algorithm of surface - to - surface. Set the friction coefficient as μ, the slip formula as finite sliding, and the normal behavior as hard contact.

[0029] According to another aspect of the present application, there is also provided a non - transitory computer - readable storage medium, in which at least one instruction or at least one program segment is stored, and at least one instruction or at least one program segment is loaded and executed by a processor to implement the above - mentioned seismic simulation method for concrete pile foundations in valley areas.

[0030] According to another aspect of the present application, there is also provided an electronic device, including a processor and the above - mentioned non - transitory computer - readable storage medium.

[0031] The present invention has at least the following beneficial effects:

[0032] For the seismic simulation method of concrete pile foundations in valley areas of the present invention, obtain the amplification effect relationship S of seismic action between preset valley strata; according to several actual stratum parameters and S in the valley area, determine the amplification effect value WS of seismic action between the corresponding valley strata in the valley area; according to several actual stratum parameters in the valley area and the parameters of the concrete pile foundation in the valley area, establish the overall model W of the valley area, and endow W with the actual constitutive relationship corresponding to the concrete pile foundation and the amplification effect value of seismic action between the actual valley strata; finally, use different types of seismic waves to simulate W, so as to determine the weak positions of the concrete pile foundations in the valley area. In the present invention, when simulating the concrete pile foundations in the valley area, the amplification effect value of seismic action between the actual valley strata is given to the overall model of the valley area, making the simulation of the concrete pile foundation more in line with the actual environment, thereby improving the accuracy of determining the weak positions of the concrete pile foundation, and then accurately maintaining the weak positions of the concrete pile foundation and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0034] Figure 1 It is a flowchart of the seismic simulation method for concrete pile foundations in the river valley area provided by the embodiments of the present invention. Specific embodiments

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0036] It should be noted that based on this disclosure, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, this device and / or this method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0037] The following will refer to Figure 1 the flowchart of the seismic simulation method for concrete pile foundations in the river valley area shown, and introduce a seismic simulation method for concrete pile foundations in the river valley area.

[0038] The seismic simulation method for concrete pile foundations in the river valley area may include the following steps:

[0039] S100, obtain the amplification effect relationship S of the seismic action between the preset river valley strata; wherein, S is used to determine the corresponding amplification effect value of the river valley on the seismic action according to several stratum parameters of the river valley area.

[0040] In this embodiment, the amplification effect of the seismic action between the river valley strata refers to the phenomenon that when seismic waves propagate in the river valley strata, due to the influence of the stratum structure and topography, the energy of the seismic waves is concentrated in some areas, resulting in the amplification of ground motion; the amplification effect of the seismic action between the river valley strata is the result of the combined action of various factors such as topography, strata, and resonance during the propagation of seismic waves; it should be noted that the amplification effect of the seismic action between the river valley strata is related to the geological parameters of the actual river valley area.

[0041] Further, S can be obtained through the following steps:

[0042] S110. Obtain valley stratum models corresponding to different stratum types to obtain a valley stratum model list set B = (B 1 , B 2 , …, B j , …, B m ), where j = 1, 2, …, m; among them, B j is the valley stratum model list corresponding to the j-th stratum type, and m is the number of stratum types; B j = (B j，1 , B j，2 , …, B j，p , …, B j，q ), where p = 1, 2, …, q; among them, B j，p is the p-th valley stratum model corresponding to the j-th stratum type, and q is the number of valley stratum models corresponding to the stratum type; the stratum thicknesses corresponding to any two valley stratum models and the ratios of valley width to valley depth are not completely the same.

[0043] In this embodiment, there are multiple stratum types in the valley area, and the amplification effects of different stratum types and valleys with different valley width-depth ratios on seismic action are all different; for each stratum type, different stratum thicknesses and valley width-depth ratios can be set, and several valley stratum models can be established; thus, B is obtained.

[0044] S120. Obtain a test seismic wave list α = (α 1 , α 2 , …, α x , …, α y ), where x = 1, 2, …, y; among them, α x is the x-th test seismic wave, and y is the number of test seismic waves; the peak accelerations of any two test seismic waves in α are different.

[0045] In this embodiment, test seismic waves with different preset peak accelerations can be preset, and the peak accelerations can be evenly set within the preset peak acceleration range. The test seismic waves are used to simulate the valley stratum models.

[0046] S130. Place B j，p on the shaking table, apply each test seismic wave in α for testing, and obtain a seismic response group list μ j，p = (μ j，p , μ j，p_1 , …, μ j，p_2 , …, μ j，p_x , …, μ j，p_y ) corresponding to B j，p_x ; among them, μ j，pPlace on a vibration table and apply α x Measured seismic response group; μ j，p_x =(λ j，p_x , η j，p_x );λ j，p_x To B j，p Place on a vibration table and apply α x The measured seismic response of the strata in front of the river valley, η j，p_x To B j，p Place on a vibration table and apply α x Measured seismic response of the strata behind the river valley.

[0047] In this embodiment, each valley model in B can be placed on a vibration table, and then each test seismic wave in α is applied in turn to perform seismic response analysis on each valley model in B, so that the seismic response of the stratum in front of the valley and the seismic response of the stratum behind the valley under each test seismic wave can be calculated to obtain a seismic response group; it should be noted that those skilled in the art can use the existing method of using a vibration table to obtain a list of seismic response groups corresponding to each valley model according to actual needs, which will not be elaborated here.

[0048] S140, according to μ j，p , determine B j，p The corresponding valley amplification effect on earthquake action [θ j，p ]=[η j，p_x ] / [λ j，p_x ]; and then the amplification effect of the valley on the earthquake action of each valley stratum model in B under each test seismic wave in α is obtained.

[0049] In this embodiment, after obtaining the seismic response of the strata in front of the river valley and the seismic response of the strata behind the river valley for each valley model under each test seismic wave through the above steps, the amplification effect of the corresponding river valley on the earthquake can be obtained according to the existing formula.

[0050] It can be understood that each valley model corresponds to the amplification effect of a valley on earthquake action under each test vibration.

[0051] S150, performing regression analysis on the amplification effect of the river valley on the earthquake action of each river valley stratum model in B under each test seismic wave in α to obtain S.

[0052] In this embodiment, an existing regression model can be used to fit the amplification effect of each river valley stratum model in B on seismic action under each test seismic wave in α, so as to obtain the relationship S of the amplification effect of seismic action between river valley strata applicable to any stratum type. It should be noted that the independent variables of S are the geological parameters of the river valley, including the stratum thickness, the width, width and depth of the river valley, and the dependent variable is the corresponding amplification effect value of the river valley on seismic action.

[0053] It should be noted that those skilled in the art can use the existing regression model fitting method according to actual needs to perform regression analysis on the amplification effect of each river valley stratum model in B on seismic action under each test seismic wave in α, and then obtain S, which will not be elaborated here.

[0054] S200. Determine the amplification effect value WS of seismic action between the corresponding river valley strata in the river valley area according to several actual stratum parameters in the river valley area and S.

[0055] In this embodiment, several actual stratum parameters of the river valley area where the concrete pile foundation to be simulated is located can be obtained. For example, the stratum thickness of the river valley, the width and depth of the river valley, and then the width-depth ratio of the river valley can be obtained. Substituting the above stratum parameters into S, the amplification effect value WS of seismic action between the corresponding valley strata in the river valley area where the concrete pile foundation to be simulated is located can be obtained.

[0056] S300. Establish the overall model W of the river valley area according to several actual stratum parameters in the river valley area and the parameters of the concrete pile foundation in the river valley area.

[0057] In this embodiment, several actual stratum parameters of the river valley area can be obtained through on-site investigation, and the parameters of the corresponding concrete pile foundation in the river valley area can be obtained through the design drawings, so that the overall model W of the river valley area can be established according to several actual stratum parameters in the river valley area and the parameters of the concrete pile foundation in the river valley area. It should be noted that W includes the three-dimensional model of the river valley and the three-dimensional model of the concrete pile foundation, and the relative position between the three-dimensional model of the concrete pile foundation and the three-dimensional model of the river valley is consistent with the actual situation.

[0058] S400. Assign the actual constitutive relationship corresponding to the concrete pile foundation and WS to W.

[0059] In this embodiment, according to the design drawings of the concrete pile foundation and the parameters of the concrete used, the actual constitutive relationship corresponding to the concrete pile foundation can be determined, so that the actual constitutive relationship corresponding to the concrete pile foundation and WS can be assigned to W; that is, the actual constitutive relationship of the concrete pile foundation is assigned to the three-dimensional model of the concrete pile foundation.

[0060] Furthermore, step S400 may include the following steps:

[0061] S410, set the contact surface between the soil and the concrete pile foundation as surface-to-surface contact.

[0062] S420, set the surface of the concrete pile foundation as the master contact surface and the surface of the soil as the slave contact surface.

[0063] S430, use the contact algorithm with penalty function and the discrete algorithm of surface-to-surface. Set the friction coefficient as μ, the slip formula as finite sliding, and the normal behavior as hard contact.

[0064] In this embodiment, endow the pile foundation model according to the constitutive relationship of reinforced concrete given in the design drawings. The contact surface between the soil and the concrete pile body adopts surface-to-surface contact. Since the stiffness of different materials varies greatly, select the material with greater stiffness, that is, the surface of the concrete as the master contact surface, and the material with smaller stiffness, that is, the surface of the soil as the slave contact surface. Select the contact algorithm with penalty function and the discrete method of surface-to-surface. The friction coefficient is μ, the slip formula is set as finite sliding; the normal behavior is set as hard contact. Calculate and set the seismic action relationship between the river valley strata according to the actual engineering parameters.

[0065] S500, obtain the seismic wave list of each preset type to obtain the seismic wave list set A = (A 1 , A 2 , …, A i , …, A n ), i = 1, 2, …, n; where A i is the seismic wave list of the i-th preset type, and n is the number of preset types of seismic waves; A i includes several seismic waves of the i-th preset type with different frequencies.

[0066] In this embodiment, the seismic types are divided into frequent-occurrence earthquake, basic earthquake and rare earthquake. Therefore, the main difference between different seismic types lies in the different peak accelerations; different frequencies of seismic waves can be set for the seismic waves corresponding to each type of earthquake; for example: for the frequent-occurrence earthquake, set 100 seismic waves with different frequencies; thus obtain A.

[0067] It can be understood that although they are all the same type of earthquake, due to the different frequencies of different seismic waves, the damage degree to the concrete pile foundation is also different. Therefore, setting multi-frequency seismic waves can better simulate the types and frequencies of seismic waves that cause greater damage to the concrete pile foundation.

[0068] S600, use A to simulate W to determine the weak positions of the concrete pile foundations in the river valley area.

[0069] Furthermore, step S600 may include the following steps:

[0070] S610, Obtain A i = (A i，1 , A i，2 , …, A i，u , …, A i，v ), where u = 1, 2, …, v; among them, A i，u is the seismic wave with the u-th frequency in the seismic waves of the i-th preset type, and v is the number of seismic waves with different frequencies in each preset type of seismic waves.

[0071] S620, Obtain the first preset value H = 1 and the second preset value G = 1.

[0072] S630, Use A H，G to simulate W to obtain the stress nephogram YW of the concrete pile foundation in W under the action of the seismic amplification effect of A H，G and the corresponding river valley. H，G .

[0073] S640, If there is no damaged position on YW H，G , it is determined that the seismic resistance effect of the concrete pile foundation in the river valley area on A H，G meets the preset conditions; otherwise, the damaged position on YW H，G is determined as the weak position of the concrete pile foundation in the river valley area, and A H，G is determined as the target seismic wave corresponding to the concrete pile foundation in the river valley area.

[0074] S650, If G < v, obtain G = G + 1; enter S630; otherwise, enter S660.

[0075] S660, If H < n, obtain H = H + 1; enter S630; otherwise, jump out of the current process.

[0076] In this embodiment, through the above steps, first, the seismic waves with different frequencies in a preset type of seismic waves are used to simulate W, and the stress nephogram after simulation can be obtained. Through the stress nephogram, it can be determined whether there is a damaged position on the model of the concrete pile foundation. If there is a damaged position, the position corresponding to the damaged position on the actual concrete pile foundation is determined as the weak position of the concrete pile foundation, and the type of seismic wave and the corresponding frequency that cause more serious damage to the simulated concrete pile foundation can also be determined. Based on the determined type and frequency of the seismic wave, if the type and frequency of the seismic wave that appears in a certain area are the same as the determined type and frequency of the seismic wave, then when designing the concrete pile foundation, the damage caused by the seismic wave to the concrete pile foundation can be avoided by changing the design structure.

[0077] In this embodiment, the amplification effect relationship S of seismic action between the preset river valley strata is obtained; according to several actual stratum parameters of the river valley area and S, the amplification effect value WS of seismic action between the corresponding river valley strata in the river valley area is determined; according to several actual stratum parameters of the river valley area and the parameters of the concrete pile foundation in the river valley area, an overall model W of the river valley area is established, and the actual constitutive relationship corresponding to the concrete pile foundation and the amplification effect value of seismic action between the actual river valley strata are assigned to W; finally, different types of seismic waves are used to simulate W, so as to determine the weak positions of the concrete pile foundation in the river valley area; in the present invention, when simulating the concrete pile foundation in the river valley area, the amplification effect value of seismic action between the actual river valley strata is assigned to the overall model of the river valley area, making the simulation of the concrete pile foundation more in line with the actual environment, thereby improving the accuracy of determining the weak positions of the concrete pile foundation, and then accurately maintaining the weak positions of the concrete pile foundation and reducing the maintenance cost.

[0078] In addition, the method in this embodiment can accurately simulate the dynamic response of the concrete pile foundation in the river valley area under seismic action, effectively identify the weak links of the structure and guide the strengthening design, thereby significantly improving the seismic safety of the structure. By combining the shaking table test and numerical simulation, a scientific analysis method is provided, improving the accuracy and reliability of the simulation results. The present invention adjusts the model parameters and seismic wave input according to the actual engineering situation and regional characteristics, showing good adaptability and flexibility. Potential problems can be discovered before construction, avoiding rework and additional reinforcement during the construction process, saving material and labor costs, and improving the economy of the project. At the same time, the structural damage caused by earthquakes is reduced, and the impact on the environment during post-disaster reconstruction is minimized, reflecting the environmentally friendly design concept, having obvious technical advantages and broad application prospects.

[0079] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that these steps must be executed in that specific order, or that all the steps shown must be executed to achieve the desired result. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step for execution, and / or one step may be decomposed into multiple steps for execution, etc.

[0080] An embodiment of the present invention also provides a non-transitory computer-readable storage medium, which can be set in an electronic device to store at least one instruction or at least one segment of a program related to a method for implementing a method in the method embodiment. The at least one instruction or the at least one segment of the program is loaded and executed by the processor to implement the method provided in the above embodiment.

[0081] The program product may employ any combination of one or more readable media. The readable media may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the readable storage medium (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0082] A computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which the readable program code is carried. Such a propagated data signal may take many forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the foregoing. The readable signal medium may also be any readable medium other than a readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0083] The program code contained on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0084] The program code for performing the operations of this application may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and also including conventional procedural programming languages such as the "C" language or similar programming languages. The program code may execute entirely on the user's computing device, partially on the user's device, as a stand-alone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0085] Embodiments of the present invention also provide an electronic device, including a processor and the foregoing non-transitory computer-readable storage medium.

[0086] The electronic device is merely an example and should not impose any limitation on the functions and scope of use of the embodiments of this application.

[0087] The electronic device is presented in the form of a general-purpose computing device. The components of the electronic device may include, but are not limited to: the at least one processor described above, the at least one memory described above, and a bus connecting different system components (including the memory and the processor).

[0088] Among them, the memory stores program code, and the program code can be executed by the processor, so that the processor executes the steps in various embodiments described in this specification.

[0089] The memory may include a readable medium in the form of volatile memory, such as random access memory (RAM) and / or cache memory, and may further include read-only memory (ROM).

[0090] The memory may also include a program / utility with a set (at least one) of program modules. Such program modules include, but are not limited to: an operating system, one or more application programs, other program modules, and program data. The implementation of a network environment may be included in each or some combination of these examples.

[0091] The bus may represent one or more of several types of bus structures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any bus structure in a variety of bus structures.

[0092] The electronic device can also communicate with one or more external devices (such as a keyboard, a pointing device, a Bluetooth device, etc.), and can also communicate with one or more devices that enable a user to interact with the electronic device, and / or communicate with any device that enables the electronic device to communicate with one or more other computing devices (such as a router, a modem, etc.). Such communication can be carried out through an input / output (I / O) interface. Moreover, the electronic device can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter. The network adapter communicates with other modules of the electronic device through the bus. It should be understood that although not shown in the figure, other hardware and / or software modules can be used in combination with the electronic device, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0093] Through the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein can be implemented by software or by a combination of software and necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (such as a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

[0094] The embodiments of the present invention further provide a computer program product, which includes program code. When the program product runs on an electronic device, the program code is used to cause the electronic device to execute the steps in the methods according to various exemplary embodiments of the present invention described above in this specification.

[0095] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should also understand that various modifications can be made to the embodiments without departing from the scope and spirit of the present invention.

Claims

1. A method for simulating the seismic resistance of concrete pile foundations in river valley areas, characterized in that: The method comprises the following steps: S100, obtaining a preset relationship S of the amplification effect of earthquake action between river valley strata; wherein S is used to determine the amplification effect value of the corresponding river valley on earthquake action according to a number of stratum parameters in the river valley area; S200, according to some actual formation parameters of the river valley area and S, determine the amplification effect value WS of the earthquake action between the river valley formations corresponding to the river valley area; S300, establishing an overall model W of the river valley area according to a number of actual stratum parameters of the river valley area and parameters of the concrete pile foundation of the river valley area; S400, assign the actual constitutive relation corresponding to the concrete pile foundation and WS to W; S500, obtaining a seismic wave list of each preset type to obtain a seismic wave list set A=(A1, A2, ..., A i , …, A n ), i=1, 2,...,n; among them, A i is the list of the i-th preset type of seismic waves, n is the number of preset types of seismic waves; A i A seismic wave of the i-th preset type including a plurality of different frequencies; S600, using A to simulate W to determine the weak location of the concrete pile foundation in the river valley area; Step S600 includes the following steps: S610, obtain A i =(A i，1 , A i，2 , …, A i，u , …, A i，v ), u=1, 2,...,v; among them, A i，u is the seismic wave with the uth frequency in the i-th preset type of seismic wave, and v is the number of seismic waves of different frequencies in each preset type of seismic wave; S620, obtaining a first preset value H=1 and a second preset value G=1; S630, use A H，G Simulate W to obtain the concrete pile foundation in W at A H，G And the stress cloud map YW obtained under the earthquake amplification effect of the corresponding river valley H，G ; S640, if YW H，G If there is no damaged position on the concrete pile foundation in the valley area, it is determined that the concrete pile foundation in the valley area is H，G The seismic effect meets the preset conditions; otherwise, H，G The damaged location on the pile foundation was identified as the weak location of the concrete pile foundation in the river valley area, and A H，G The target seismic wave corresponding to the concrete pile foundation in the river valley area was determined; S650, if G<v, obtain G=G+1; go to S630; otherwise go to S660; S660, if H<n, obtain H=H+1; enter S630; otherwise, jump out of the current processing.

2. The method for simulating earthquake resistance of concrete pile foundation in river valley area according to claim 1 is characterized in that: S is obtained by the following steps: S110, obtaining river valley stratum models corresponding to different stratum types to obtain a river valley stratum model list set B = (B1, B2, ..., B j , …, B m ), j = 1, 2, ..., m; where B j is the list of valley stratigraphic models corresponding to the jth stratigraphic type, m is the number of stratigraphic types; B j =(B j，1 , B j，2 , …, B j，p , …, B j，q ), p = 1, 2, …, q; where B j，p is the pth river valley stratigraphic model corresponding to the jth stratigraphic type, q is the number of river valley stratigraphic models corresponding to the stratigraphic type; the stratigraphic thickness corresponding to any two river valley stratigraphic models and the ratio of the river valley width to the river valley depth are not exactly the same; S120, obtain the test seismic wave list α=(α1, α2, …, α x , …, α y ), x=1, 2,..., y; among them, α x is the xth test seismic wave, y is the number of test seismic waves; the peak accelerations of any two test seismic waves in α are different; S130, B j，p Place it on the vibration table, apply each test seismic wave in α for testing, and get B j，p The corresponding earthquake response group list μ j，p =(μ j，p_1 , μ j，p_2 ,…,μ j，p_x ,…,μ j，p_y ); where μ j，p_x To B j，p Place on a vibration table and apply α x Measured seismic response group; μ j，p_x =(λ j，p_x , η j，p_x );λ j，p_x To B j，p Place on a vibration table and apply α x The measured seismic response of the strata in front of the river valley, η j，p_x To B j，p Place on a vibration table and apply α x the measured seismic response of the strata behind the river valley; S140, according to μ j，p , determine B j，p The corresponding valley amplification effect on earthquake action [θ j，p ]=[η j，p_x ] / [λ j，p_x ]; and then obtain the amplification effect of the valley on the earthquake action of each valley stratum model in B under each test seismic wave in α; S150, performing regression analysis on the amplification effect of the river valley on the earthquake action of each river valley stratum model in B under each test seismic wave in α to obtain S.

3. The method for simulating earthquake resistance of concrete pile foundation in river valley area according to claim 1, characterized in that: The preset types of seismic waves include: seismic waves corresponding to frequently occurring earthquakes, seismic waves corresponding to basic earthquakes, and seismic waves corresponding to rarely occurring earthquakes.

4. The method for simulating earthquake resistance of concrete pile foundation in river valley area according to claim 1, characterized in that: Step S400 includes the following steps: S410, setting the contact surface between the soil and the concrete pile foundation to be surface-to-surface contact; S420, setting the surface of the concrete pile foundation as a primary contact surface, and setting the surface of the soil as a secondary contact surface; S430, using the contact algorithm with penalty function and the surface-to-surface discretization algorithm, the friction coefficient is set to μ, the sliding formula is set to finite sliding, and the normal behavior is set to hard contact.

5. A non-transitory computer-readable storage medium, wherein at least one instruction or at least one program is stored in the storage medium, characterized in that: The at least one instruction or the at least one program is loaded and executed by the processor to implement the earthquake-resistant simulation method for concrete pile foundations in river valley areas as described in any one of claims 1 to 4.

6. An electronic device, characterized in that: Includes a processor and the non-transitory computer-readable storage medium of claim 5.

Images