Prefabricated subway station foundation settlement value prediction method, device, equipment and medium

Abstract

The invention discloses an assembly type subway station foundation settlement value prediction method, device, equipment and medium, and the method comprises the steps: obtaining a first vertical settlement prediction result and a second vertical settlement prediction result, and obtaining a vertical settlement measurement result of a target assembly type subway station in a 95% confidence interval; according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result, determining a vertical settlement coefficient generated by considering the influence of the inter-ring joint of the vertical settlement value, and drawing a vertical settlement prediction curve; in the actual construction measurement process, the foundation settlement value of the target assembly type subway station is predicted according to the vertical settlement prediction curve. According to the method, the uncertainty of a vertical settlement value is explained from the settlement formation principle level and consists of the uncertainty of the proportion of two factors, namely joint deformation and foundation settlement in overall settlement. On the basis, the fluctuation range of the vertical settlement value is predicted, and the accuracy of vertical settlement value prediction is improved.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a method, device, equipment and medium for predicting foundation settlement values ​​of an assembled subway station. Background Art

[0002] The rapid development of prefabricated subway station construction technology has provided strong technical support for the efficient use and sustainable development of underground space, and is expected to be more widely used in the future.

[0003] During the construction of prefabricated subway stations, due to factors such as underground space limitations and ground traffic demand, it is often necessary to backfill the stations during construction to restore ground traffic or rebuild ground buildings. Therefore, it is of great practical significance to conduct in-depth research on the longitudinal deformation variation law of prefabricated subway stations under the action of covering soil load. Most of the existing theoretical calculation methods for the longitudinal deformation of prefabricated structures use the Eluer beam model or the Timoshenko beam model to simulate the prefabricated structure, and use elastic foundation models such as Winker, Pasternak, and Kerr to consider the interaction between the beam and the soil. However, the predicted settlement values ​​obtained by the current analytical methods are all fixed values, which cannot adapt to the uncertainty of the actual vertical settlement value.

[0004] It can be seen that how to improve the accuracy of measurement and control data of prefabricated subway stations has become a technical problem that technical personnel in this field need to solve urgently. Summary of the invention

[0005] The present invention provides a method, device, equipment and medium for predicting the foundation settlement value of an assembled subway station, so as to improve the accuracy of predicting the vertical settlement of the foundation of the assembled subway station during the construction process.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a method for predicting the foundation settlement value of an assembled subway station, comprising:

[0007] A first vertical settlement prediction result of a target prefabricated subway station outputted by a Timoshenko-Winkler model is obtained, and a second vertical settlement prediction result of the target prefabricated subway station outputted by a Timoshenko-Pasternak model is obtained.

[0008] The measured settlement data of the target prefabricated subway station are screened and processed to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval.

[0009] A vertical settlement coefficient taking into account the influence of inter-ring joints of the vertical settlement value of the target prefabricated subway station is determined according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result.

[0010] The first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joints are substituted into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and a vertical settlement prediction curve is drawn according to the vertical settlement prediction result.

[0011] During the actual construction measurement process, the foundation settlement value of the target prefabricated subway station is predicted according to the vertical settlement prediction curve.

[0012] Furthermore, the measured settlement data of the target prefabricated subway station is screened and processed to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval, including:

[0013] A settlement value scatter plot is drawn using Matlab based on the actual vertical settlement measurement values ​​of the target prefabricated subway station.

[0014] The vertical settlement measurement results within the preset confidence interval of the target prefabricated subway station are obtained according to the scatter plot.

[0015] Furthermore, the range of the preset confidence interval is 95%.

[0016] Furthermore, the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient generated by considering the influence of the inter-ring joint are substituted into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and a vertical settlement prediction curve is drawn according to the vertical settlement prediction result, including:

[0017] The foundation settlement mode is determined according to the first vertical settlement prediction result and the second vertical settlement prediction result; the foundation settlement mode includes a first settlement mode, a second settlement mode and a third settlement mode, the first settlement mode is a foundation settlement mode using annular seam reinforcement, the second settlement mode is a foundation settlement mode using foundation reinforcement, and the third settlement mode is a foundation settlement mode using foundation reinforcement and annular seam reinforcement.

[0018] A vertical settlement prediction curve is drawn according to the foundation settlement pattern, the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joints.

[0019] Furthermore, the vertical settlement prediction curve of the first settlement mode is:

[0020] w=w2

[0021] Among them, w2 is the deformation caused by foundation settlement.

[0022] Furthermore, the vertical settlement prediction curve of the second settlement mode is:

[0023] w=w1

[0024] Among them, w1 is the deformation caused by considering the influence of the joint between the rings.

[0025] Furthermore, the vertical settlement prediction curve of the third settlement mode is:

[0026] w=aw1+(1-a)w2

[0027] Where a is the vertical settlement coefficient considering the influence of the inter-ring joints.

[0028] Another embodiment of the present invention provides a device for predicting the settlement value of a foundation of an assembled subway station, comprising:

[0029] The data acquisition module is used to obtain the first vertical settlement prediction result of the target prefabricated subway station output by the Timoshenko-Winkler model, and obtain the second vertical settlement prediction result of the target prefabricated subway station output by the Timoshenko-Pasternak model.

[0030] The data screening module is used to screen and process the measured settlement data of the target prefabricated subway station to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval.

[0031] A coefficient acquisition module is used to determine the vertical settlement coefficient of the vertical settlement value of the target prefabricated subway station taking into account the influence of the inter-ring joint according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result.

[0032] A curve drawing module is used to substitute the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joint into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and draw a vertical settlement prediction curve according to the vertical settlement prediction result.

[0033] The foundation prediction module is used to predict the foundation settlement value of the target prefabricated subway station according to the vertical settlement prediction curve during the actual construction measurement process.

[0034] Another embodiment of the present invention provides a computer device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the method for predicting foundation settlement values ​​of prefabricated subway stations as described above when executing the computer program.

[0035] Yet another embodiment of the present invention provides a computer-readable storage medium storing a computer program, wherein when the device where the computer-readable storage medium is located executes the computer program, the method for predicting the foundation settlement value of an assembled subway station as described above is implemented.

[0036] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0037] (1) The Timoshenko-Pasternak modified model is proposed to explain the uncertainty of vertical settlement values ​​from the perspective of settlement formation principle, which is composed of the uncertainty of the proportion of joint deformation and foundation settlement in the overall settlement. On this basis, the fluctuation range of vertical settlement values ​​is predicted, and the reliability of the proposed prediction method is verified by comparing it with the measured vertical settlement values. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A flowchart of the steps of a method for predicting the foundation settlement of an assembled subway station provided in an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of soil backfilling construction of Fukeng Station provided in an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the measured vertical settlement value distribution and 95% confidence interval provided in an embodiment of the present invention;

[0041] Figure 4 A frequency histogram and a cumulative distribution function diagram of the measured vertical settlement values ​​provided in an embodiment of the present invention;

[0042] Figure 5 A schematic diagram of the strata of Fukeng Station provided in an embodiment of the present invention;

[0043] Figure 6 A comparison diagram of the fluctuation of the predicted vertical settlement value and the measured settlement value provided by the embodiment of the present invention;

[0044] Figure 7 A structural block diagram of a device for predicting foundation settlement of a prefabricated subway station provided in an embodiment of the present invention;

[0045] Figure 8 A structural diagram of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] In the description of this application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0048] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are only for illustrative purposes, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0050] An embodiment of the present invention provides a method for predicting the foundation settlement of a prefabricated subway station. For details, see Figure 1 , Figure 1 The flowchart of the method for predicting the foundation settlement of a prefabricated subway station in one embodiment of the present invention includes steps S11 to S15:

[0051] Step S11, obtaining a first vertical settlement prediction result of a target prefabricated subway station output by a Timoshenko-Winkler model, and obtaining a second vertical settlement prediction result of the target prefabricated subway station output by a Timoshenko-Pasternak model.

[0052] In the existing calculation of vertical settlement of foundation, in terms of the overall settlement of prefabricated structures caused by the influence of inter-ring joints, the Timoshenko-Winkler model establishes a simplified solution of longitudinal deformation based on the continuity conditions of bending moment and shear force at the inter-ring joints, which reflects the nonlinear change of longitudinal deformation at the ring sections and joints in the longitudinal direction of the prefabricated structure; in terms of the overall settlement of prefabricated structures caused by foundation settlement, the Timoshenko-Pasternak model applies the calculation assumption of shear layer bending moment, takes into account the continuity of the land, and can more accurately reflect the actual situation of foundation beams. Under the same circumstances, the vertical settlement calculated by the Pasternak foundation model is usually larger than that by the Winkler foundation model. The theoretical predicted settlement values ​​obtained by the two analyses are both fixed values, which cannot explain the source of the fluctuation of vertical settlement.

[0053] This embodiment comprehensively considers the proportion of the two factors, deformation at the joints and foundation settlement, in the overall settlement of the foundation. Therefore, it is necessary to obtain the first vertical settlement prediction result and the second vertical settlement prediction result of the target prefabricated subway station corresponding to the Timoshenko-Winkler model and the Timoshenko-Pasternak model respectively.

[0054] Step S12, screening and processing the measured settlement data of the target prefabricated subway station to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval.

[0055] After obtaining the first vertical settlement prediction result and the second vertical settlement prediction result, it is necessary to actually measure the settlement data of the target prefabricated subway station to provide a basis for subsequently determining the proportion of the first vertical settlement prediction result and the second vertical settlement prediction result.

[0056] Specifically, this embodiment takes the Fukeng Station of Shenzhen Metro Line 16 Phase II Project as an example to illustrate the foundation settlement prediction process. Figure 2 As shown, Figure 2The schematic diagram of the backfilling construction of Fukeng Station provided in this embodiment has a total length of 174m for the assembly section of the station, with a total of 87 rings. According to the ground flatness requirements, Fukeng Station adopts a regional and layered backfilling scheme to ensure the stability and safety of the structure during construction. The backfilling process is divided into construction areas I to IV. The middle construction area I is 1 to 20 rings, backfilled in 6 layers. Construction area II is 20-48 rings, backfilled in 5 layers. Construction area III is 48-68 rings, backfilled in 4 layers. Construction area IV is 68-87 rings, backfilled in 4 layers, and the thickness of each backfilled soil layer is 0.3m, with a total of 19 construction steps.

[0057] During the construction process of backfilling, the actual vertical settlement measurement values ​​are obtained by real-time monitoring and processed using Matlab tools, such as Figure 3 As shown, a scatter plot is drawn based on the actual vertical settlement measurement values ​​monitored, and then the values ​​within the preset 95% confidence interval are taken, and the vertical settlement measurement result is obtained to be -3.11 mm.

[0058] Matlab is used to further process the actual vertical settlement measurements and plot Figure 4 The frequency histogram of the measured vertical settlement values ​​and the cumulative distribution function diagram shown can verify that the measured value of -3.11 mm obtained in this embodiment conforms to the distribution law of the probability density function.

[0059] Step S13, determining the vertical settlement coefficient of the vertical settlement value of the target prefabricated subway station taking into account the influence of the inter-ring joints according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result.

[0060] This embodiment takes the position of the 56th ring assembly of Fukeng Station as an example to calculate the proportion of deformation accounted for by foundation settlement and the influence of the joint between the rings. The stratum structure of Fukeng Station is as follows: Figure 5 As shown in the figure, the bottom of the foundation pit of Fukeng Subway Station in Longgang District, Shenzhen is paved with a 150mm thick C20 concrete cushion layer, and the rest is a medium-hard clay layer. Assume that the station foundation consists of a 150mm thick C20 concrete cushion layer and a 35m thick medium-hard clay layer. According to the provisions of the Concrete Structure Design Code GB50010-2002, the elastic modulus of C20 concrete is 2.55x10 10 N / m 2 The elastic modulus of the medium-hard adhesive layer is set to 4MN / m 2 In the process of establishing the Timoshenko-Pasternak model considering foundation settlement, the foundation elastic modulus Es = (0.15x2.55x10 10 +35x4x10 6 ) / 35.15=1.128x10 8 N / m 2In addition, in the construction process of Timoshenko-Pasternak, the vertical settlement calculation equation is a sixth-order differential equation, and three virtual nodes need to be set at the head and tail. In this embodiment, since the head and tail of the prefabricated subway station are cast-in-place sections, the vertical displacements of the virtual nodes at the head and tail are assumed to be 0 in this embodiment.

[0061] In summary, this embodiment first establishes a Timoshenko-Pasternak model that takes into account foundation settlement, and then modifies the Timoshenko-Pasternak model by considering the influence of inter-ring joints. The settlement prediction relationship of this embodiment is w=aw1+(1-a)w2, wherein w1 is the deformation caused by the influence of inter-ring joints, w2 is the deformation caused by considering foundation settlement, and a is the vertical settlement coefficient caused by considering the influence of inter-ring joints.

[0062] Taking the 56th ring of Fukeng Station as an example, the total length of the assembly section is 174m, with a total of 87 rings. The difference format is used for discretization during the calculation process. Each ring is discretized into 4 nodes, so the number of nodes is 87x4=348 nodes. The construction direction is from right to left, so the 56th ring is the 125-128th node. The second vertical settlement prediction result w2=-3.94108-3.95295-3.923-3.88546 is obtained by taking the 125-128 node through the Timoshenko-Pasternak model, and the first vertical settlement prediction result w1=-3.04474 is obtained by taking the 125-128 node through the Timoshenko-Winkler model. -3.02608-3.00923-2.993, combined with the actual measurement and 95% confidence interval data, the vertical settlement measurement result w=-3.11mm is substituted into the settlement prediction formula to obtain a=(w-w2) / (w1-w2)=(-3.11-(-3.94108-3.95295-3.923-3.88546) / 4) / ((-3.04474-3.02608-3.00923-2.993) / 4-(-3.94108-3.95295-3.923-3.88546) / 4)=0.8989.

[0063] Step S14, substitute the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joints into the pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and draw a vertical settlement prediction curve according to the vertical settlement prediction result.

[0064] After determining the vertical settlement coefficient a caused by the influence of the inter-ring joint, according to the settlement prediction relationship, substitute w1 and w2 of the entire line of Fukeng Station to draw the following Figure 6The vertical settlement prediction curve shown in Figure 1 is the Timoshenko-Winkler model, and the model in Reference [1] is the Timoshenko-Pasternak model.

[0065] The settlement values ​​of other rings of Fukeng Station were monitored to verify the predicted results of the vertical settlement values ​​of this embodiment. The monitoring results showed that the vertical settlement values ​​in the prefabricated subway station project continued to fluctuate, with significant uncertainty. The data within the 95% confidence interval (-3.11 mm) were within the predicted range of this embodiment, and 86% of the measured data were distributed within the predicted range of this embodiment (between -3 mm and -3.9 mm).

[0066] The above conclusions show that the vertical settlement data prediction method for prefabricated subway stations designed by modifying the Timoshenko-Pasternak model in this embodiment based on the influence of inter-ring joints can more accurately predict the overall settlement value and also explain and reflect the uncertainty of the overall settlement.

[0067] Step S15: during the actual construction measurement process, predicting the foundation settlement value of the target prefabricated subway station according to the vertical settlement prediction curve.

[0068] In the actual settlement prediction process, the foundation settlement mode can be determined according to the first vertical settlement prediction result and the second vertical settlement prediction result. Specifically, this embodiment is divided into three foundation settlement modes: a first settlement mode, a second settlement mode and a third settlement mode.

[0069] Among them, the first settlement mode is the foundation settlement mode using ring seam reinforcement, the second settlement mode is the foundation settlement mode using foundation reinforcement, and the third settlement mode is the foundation settlement mode using foundation reinforcement and ring seam reinforcement.

[0070] When the foundation is in the first settlement mode, it means that the inter-annular joint does not exist, or the inter-annular joint reinforcement measures are adopted in the whole area, the discontinuous deformation at the joint can be ignored, and the vertical settlement coefficient caused by the influence of the inter-annular joint is taken as 0. The settlement prediction relationship of the vertical settlement is consistent with the Timoshenko-Pasternak model. At this time, w=w2.

[0071] When strong foundation reinforcement measures are taken, such as a very large base grouting range, it can be regarded as being placed only on the C20 concrete layer. At this time, the deformation caused by the foundation's own settlement and the foundation shear deformation can be ignored. When the foundation is in the second settlement mode, the vertical settlement coefficient considering the influence of the inter-annular joint is taken as 1. The settlement prediction relationship of the vertical settlement is consistent with the Timoshenko-Winkler model that only considers the discontinuous deformation at the joint. At this time, w=w1.

[0072] The above-mentioned first settlement mode and second settlement mode are both vertical settlement predictions under extremely ideal conditions. In most cases, the foundation is in the third settlement mode, that is, the vertical settlement coefficient produced by considering the influence of the inter-annular joints is determined by the effects of foundation reinforcement and annular seam reinforcement. At this time, w=aw1+(1-a)w2, a∈(0,1).

[0073] The method for predicting the settlement value of the foundation of the prefabricated subway station of the present invention proposes the Timoshenko-Pasternak correction model to explain the uncertainty of the vertical settlement value from the perspective of the settlement formation principle, that is, the uncertainty of the proportion of the two factors of joint deformation and foundation settlement in the overall settlement. On this basis, the fluctuation range of the vertical settlement value is predicted, and the reliability of the proposed prediction method is verified by comparing it with the measured vertical settlement value.

[0074] The embodiment of the present invention further provides a device for predicting the settlement value of the foundation of an assembled subway station, which is used to execute the method for predicting the settlement value of the foundation of an assembled subway station as described above. Figure 7 This is a structural block diagram of a device for predicting the foundation settlement of a prefabricated subway station according to an embodiment of the present invention, and the device comprises:

[0075] The data acquisition module 21 is used to obtain the first vertical settlement prediction result of the target prefabricated subway station output by the Timoshenko-Winkler model, and obtain the second vertical settlement prediction result of the target prefabricated subway station output by the Timoshenko-Pasternak model.

[0076] The data screening module 22 is used to screen the measured settlement data of the target prefabricated subway station to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval.

[0077] The coefficient acquisition module 23 is used to determine the vertical settlement coefficient of the vertical settlement value of the target prefabricated subway station taking into account the influence of the inter-ring joint according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result.

[0078] The curve drawing module 24 is used to substitute the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joint into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and draw a vertical settlement prediction curve according to the vertical settlement prediction result.

[0079] The foundation prediction module 25 is used to predict the foundation settlement value of the target prefabricated subway station according to the vertical settlement prediction curve during the actual construction measurement process.

[0080] The technical features and technical effects of the device proposed in the embodiment of the present invention are the same as those of the method proposed in the embodiment of the present invention, and are not described in detail here. Each module in the above device can be implemented in whole or in part by software, hardware, and a combination thereof. Each of the above modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0081] An embodiment of the present invention also provides a computer-readable storage medium, which includes a stored computer program; wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the method for predicting the foundation settlement value of an assembled subway station as described above.

[0082] The embodiment of the present invention further provides a computer device, Figure 8 A structural block diagram of a preferred embodiment of a computer device provided by the present invention, wherein the computer device includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor implements the above-mentioned method for predicting foundation settlement values ​​of prefabricated subway stations when executing the computer program.

[0083] Preferably, the computer program can be divided into one or more modules / units (such as computer program 1, computer program 2, ...), and the one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units can be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program in the computer device.

[0084] The processor may be a central processing unit (CPU), or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor. The processor is the control center of the computer device, and various parts of the computer device are connected using various interfaces and lines.

[0085] The memory mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function, etc., and the data storage area can store related data, etc. In addition, the memory can be a high-speed random access memory, or a non-volatile memory, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, and a flash card (Flash Card), etc., or the memory can also be other volatile solid-state storage devices.

[0086] It should be noted that the above-mentioned computer device may include, but is not limited to, a processor and a memory. Those skilled in the art will understand that Figure 8 The structural block diagram is merely an example of a computer device and does not constitute a limitation of the computer device, and may include more or less components than shown in the figure, or combine certain components, or different components.

[0087] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for predicting the settlement of a prefabricated subway station foundation, characterized in that: include: Obtaining a first vertical settlement prediction result of a target prefabricated subway station outputted by a Timoshenko-Winkler model, and obtaining a second vertical settlement prediction result of the target prefabricated subway station outputted by a Timoshenko-Pasternak model; Screening and processing the measured settlement data of the target prefabricated subway station to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval; Determine the vertical settlement coefficient of the target prefabricated subway station vertical settlement value taking into account the influence of the inter-ring joint according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result; Substituting the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joint into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and drawing a vertical settlement prediction curve according to the vertical settlement prediction result; During the actual construction measurement process, the foundation settlement value of the target prefabricated subway station is predicted according to the vertical settlement prediction curve.

2. The method for predicting the foundation settlement of an assembled subway station according to claim 1, characterized in that: The screening and processing of the measured settlement data of the target prefabricated subway station to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval includes: Draw a settlement value scatter plot using Matlab according to the actual vertical settlement measurement values ​​of the target prefabricated subway station; The vertical settlement measurement results within the preset confidence interval of the target prefabricated subway station are obtained according to the scatter plot.

3. The method for predicting the foundation settlement of an assembled subway station according to claim 2, characterized in that: The range of the preset confidence interval is 95%.

4. The method for predicting the foundation settlement of an assembled subway station according to claim 1, characterized in that: Substituting the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient generated by considering the influence of the inter-ring joint into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and drawing a vertical settlement prediction curve according to the vertical settlement prediction result, including: Determining a foundation settlement mode according to the first vertical settlement prediction result and the second vertical settlement prediction result; the foundation settlement mode includes a first settlement mode, a second settlement mode and a third settlement mode, the first settlement mode is a foundation settlement mode using annular seam reinforcement, the second settlement mode is a foundation settlement mode using foundation reinforcement, and the third settlement mode is a foundation settlement mode using foundation reinforcement and annular seam reinforcement; A vertical settlement prediction curve is drawn according to the foundation settlement pattern, the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient produced by considering the influence of the inter-ring joints.

5. The method for predicting the foundation settlement of an assembled subway station according to claim 4, characterized in that: The vertical settlement prediction curve of the first settlement mode is: w=w2 Among them, w2 is the deformation caused by foundation settlement.

6. The method for predicting the foundation settlement of an assembled subway station according to claim 4, characterized in that: The vertical settlement prediction curve of the second settlement mode is: w=w1 Among them, w1 is the deformation caused by considering the influence of the joint between the rings.

7. The method for predicting the foundation settlement of an assembled subway station according to claim 4, characterized in that: The vertical settlement prediction curve of the third settlement mode is: w=aw1+(1-a)w2 Where a is the vertical settlement coefficient considering the influence of the inter-ring joints.

8. A device for predicting the settlement of foundation of an assembled subway station, characterized in that: include: A data acquisition module, used to obtain a first vertical settlement prediction result of a target prefabricated subway station outputted by a Timoshenko-Winkler model, and to obtain a second vertical settlement prediction result of the target prefabricated subway station outputted by a Timoshenko-Pasternak model; A data screening module, used to screen and process the measured settlement data of the target prefabricated subway station to obtain the vertical settlement measurement result of the target prefabricated subway station within a preset confidence interval; A coefficient acquisition module, used to determine the vertical settlement coefficient of the vertical settlement value of the target prefabricated subway station taking into account the influence of the inter-ring joint according to the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement measurement result; A curve drawing module, used for substituting the first vertical settlement prediction result, the second vertical settlement prediction result and the vertical settlement coefficient generated by considering the influence of the inter-ring joint into a pre-constructed settlement prediction relationship to obtain the vertical settlement prediction result of the target prefabricated subway station, and drawing a vertical settlement prediction curve according to the vertical settlement prediction result; The foundation prediction module is used to predict the foundation settlement value of the target prefabricated subway station according to the vertical settlement prediction curve during the actual construction measurement process.

9. A computer device, characterized in that: The method comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for predicting the foundation settlement value of an assembled subway station as claimed in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the device where the computer-readable storage medium is located executes the computer program, the method for predicting the foundation settlement value of an assembled subway station as described in any one of claims 1 to 7 is implemented.

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