A high-stability ground structure that is easy to construct and a construction method thereof

Abstract

The present invention discloses a high-stability ground structure and a construction method thereof that are convenient for construction, and relates to the field of construction technology, and solves the problem of improving the high stability of construction. The technical scheme adopted is: a high-stability ground structure and a construction method thereof that are convenient for construction, wherein the high-stability ground structure that is convenient for construction comprises a leveling layer, a concrete layer, a filling layer, an earthquake-proof layer, a reinforcement layer and a waterproof layer, and by modifying the properties of the soil, the soil, cement, an activator, a dispersant and the like act together to activate the chemical bonds of silicon, oxygen and calcium contained in the soil to react and form calcium carbonate, thereby making the soil have strength properties and become an active carrier, making the filling layer have stable strength, and having good overall filling uniformity, and also facilitating the construction of the subsequent process, thereby making the entire road surface have uniform strength, stable performance, and not prone to cracking and the like, and greatly improving the high stability of the construction.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a high-stability ground structure that is easy to construct and a construction method thereof. Background Art

[0002] The foundation refers to the soil supporting the base of a building. There are two types of building foundations: natural foundations and artificial foundations. The natural foundation is the natural soil that does not require artificial reinforcement and can be used directly. However, the existing buildings have higher and higher requirements for foundations, making the use of natural foundations less and less. Artificial foundations require reinforced soil, which is commonly a cushion layer of various sand and gravel or mixed gray soil backfill and then compacted to meet the needs of higher-rise buildings.

[0003] However, the existing building foundation structure is too simple, and lacks a safety structure that can keep the upper building balanced when sinking, or slow down the sinking speed so that people in the building can escape in time. This requires further improvement of the overall structure of the existing construction project foundation. The existing construction structure has an uneven thickness of the entire plane after filling due to the lack of strength of the soil. Even if the filling strength is enhanced through vibration filling of the gravel layer, there will still be problems with uniformity. This will easily lead to pits or cracks on the road surface after the entire construction is completed during subsequent use. Summary of the invention

[0004] In view of the deficiencies of the above-mentioned technologies, the present invention discloses a high-stability ground structure which is easy to construct and a construction method thereof. The structure uses soil, cement, an activator, a dispersant, etc. to stimulate the chemical bonds of silicon, oxygen and calcium contained in the soil to react and form calcium carbonate, thereby giving the soil strength properties and turning it into an active carrier. The construction of a "crushed stone layer" is omitted, the thickness of the entire road surface or foundation is reduced, the strength is increased by 10-20Mpa, and the construction process and construction cost are reduced.

[0005] In order to achieve the above technical effects, the present invention adopts the following technical solutions:

[0006] A high-stability ground structure that is easy to construct, comprising a leveling layer and a concrete layer;

[0007] The leveling layer is used for leveling, sloping or strengthening the cushion layer, floor slab and filling layer, and the leveling layer is laid 3-5 cm;

[0008] The concrete layer is the middle layer between the reinforced concrete foundation and the foundation soil, used for leveling, isolation, filtering and transition, and the concrete layer is laid 20-30 cm;

[0009] It also includes a filling layer, an anti-vibration layer, a reinforcement layer and a waterproof layer;

[0010] The filling layer is filled with loose, block and integral materials with a weight of 550-650 kg / cm^3. The filling layer is made of modified soil and is laid 50-60 cm.

[0011] The shockproof layer is used to mitigate the damage caused by earthquake shaking. The shockproof layer includes a grid frame, a load-bearing mechanism and a buffer mechanism. The grid frame includes a longitudinal beam tube and a transverse beam tube. The longitudinal beam tube is connected to the transverse beam tube through a top clamping block. The load-bearing mechanism is provided with a rubber pad and a rubber block. The buffer mechanism includes a moving plate, two springs and an I-shaped block. The two springs located inside the groove of the I-shaped block are respectively attached to the surface of the moving plate.

[0012] The reinforcement layer is used to improve the foundation strength. The reinforcement layer includes a mesh structure and a fixed column. The mesh structure is composed of transverse ribs and vertical ribs. The transverse ribs are welded to the vertical ribs. The upper end of the fixed column is welded to the mesh structure.

[0013] The waterproof layer comprises a base material and a filling material, wherein the base material is a mixture of polyolefin, polyvinyl chloride, polyvinylidene chloride, polyester and polystyrene, and the filling material is a mixture of glass fiber, polymer fiber, carbon fiber, ceramic fiber, metal fiber, natural fiber and glass flake. The waterproof layer is also paved with calcium carbide to prevent moisture, wherein the chemical reaction equation for moisture-proof application is: CaC2+2H2O=Ca(OH)2+C2H2 (1)

[0014] In formula (1), CaC2 is calcium carbide, Ca(OH)2 is calcium hydroxide, C2H2 is ethylene, and H2O is water.

[0015] As a further embodiment of the present invention, the modified soil is mixed with 10% cement, 10% sand, 5% additives, water and soil, the additives include a modifier, an activator and a dispersant, the activator is mixed with 4-6 parts of amine, 2-3 parts of alcohol, 4-9 parts of lignin sulfonate and 7-9 parts of aluminum salt, the dispersant is a condensate of fatty alcohol and ethylene oxide, and the modifier is mixed with 5-8 parts of cellulose, 1-3 parts of urea and 6-10 parts of ethylene-vinyl acetate copolymer.

[0016] As a further embodiment of the present invention, the preparation process of the modified soil is: first mix cement and soil, add an activator during the stirring process to activate the chemical bonds of silicon, oxygen and calcium in the soil, then add a dispersant to reduce the water efficiency, and finally use water to crystallize and solidify, and let it stand for 1-2 days to form the modified soil; the chemical changes involved in this are:

[0017]

[0018] In formula (2), the components of soil include calcium Ca, silicon Si, oxygen O2 and carbon C, the components of cement include calcium oxide CaO and silicon oxide SiO2, and the components of modified soil include calcium carbonate CaCO3 and silicon carbonate Si(CO3)2.

[0019] As a further embodiment of the present invention, there are 6 rubber pads and 6 rubber blocks, 2 buffer mechanisms, and the load-bearing mechanism includes a support plate and a fixing rod. The support plate is fixed to the surface of the movable plate by a hinge, and the fixing rod is connected to the concrete layer.

[0020] As a further embodiment of the present invention, the mesh structure is located in the leveling layer, and the lower end of the fixing column is welded to the surface of the I-shaped block.

[0021] As a further embodiment of the present invention, the matrix material is prepared by 3-5 parts of polyolefin, 4-6 parts of polyvinyl chloride, 1-3 parts of polyvinylidene chloride, 6-7 parts of polyester and 5-7 parts of polystyrene, and the filling material is melted by a combination of 10% glass fiber, 15% polymer fiber, 5% carbon fiber, 30% ceramic fiber and 40% natural fiber.

[0022] A method for constructing a high-stability ground structure that is easy to construct, applied to the high-stability ground structure that is easy to construct, comprises the following steps:

[0023] Step 1: Before measuring, calibrate the measuring instruments and make sure that all measuring instruments are in good condition and without deviation;

[0024] The measuring instruments include a level, a theodolite and a total station. The level is used to measure the high-rise roadbed, high-rise road surface, bridge and culvert elevation and highway longitudinal section. The theodolite is used to measure the centerline, deflection angle and sight distance of highways and bridges. The total station is used for angle measurement, distance measurement, three-dimensional coordinate measurement, traverse measurement, intersection point measurement and layout measurement.

[0025] Step 2: Use the theodolite to place control lines and control points according to the edge line, orientation and elevation of the construction object, and review the data to ensure the accuracy of positioning;

[0026] Step 3: Measure the outer line according to the control line and set gantry piles around the construction object to control the position of the construction object and mark the correct line setting;

[0027] Step 4: Lay out the excavation line according to the outer line and design blueprint and drive the axis piles along the line;

[0028] Step 5: Confirm the soil quality, and if there is no abnormality in the excavation, excavate the foundation trench according to the construction drawing until the trench of the old soil layer is straight and meets the dimensions of the construction drawing;

[0029] Step 6: After excavation, lay a 50-60 cm filling layer, a 40-50 cm earthquake-proof layer, a 20-30 cm concrete layer, a 15-25 cm waterproof layer, a 3-5 cm leveling layer and a reinforcement layer fixed between the leveling layer and the concrete layer.

[0030] Step 7: Evaluate and verify the high stability ground structure through the ground structure parameter evaluation model.

[0031] As a further embodiment of the present invention, the ground structure parameter evaluation model first decomposes the original data into several components, then uses the support vector machine to predict the inherent model function, and then adds the results to form a comprehensive evaluation result; the original ground structure management data set is X, and k data are randomly extracted from the project set X and clustered into a cluster set R1, then the R1 expression is specifically:

[0032] R1=X(ky)+X(kx) (3)

[0033] In formula (3), y represents the cluster data item in L1, the candidate cluster of cluster data is M, where the construction data item in the candidate original ground structure management data M needs to be selected in R1, and the selection basis is the original ground structure management data set E in two-dimensional form that contains non-data redundant items. The expression of the final data set Y obtained after preprocessing is:

[0034] Y=(R1(ky)-E(kc)(kx))+(ky) (4)

[0035] In formula (4), x represents the cluster data item in R1, k represents the total cluster data item, c represents the interference cluster data item, and E represents the cluster data item function under the ideal state. When R1 is formed and satisfies x = y, the two are merged. Similarly, other item sets are merged to finally obtain the data set y. Equation (5) is used to decompose nonlinear and non-stationary data into several inherent model function components and a remainder:

[0036]

[0037] In formula (5), x(t) is the original time series, IMFi(t) is the i-th intrinsic model function, Rn(t) is the residual, and a white noise sequence is added to the input data to decompose the data containing white noise into the intrinsic model function. The above process is repeated N times with different white noises, and finally the average value of the corresponding intrinsic model function components is obtained as the final decomposition result. The partial autocorrelation coefficient function is combined to eliminate the influence of other variables on the final evaluation result. The j-th regression coefficient of the corresponding intrinsic model function at lag k is defined as φk,j, then the autoregressive model of lag k can be expressed as:

[0038] y t =φk1 y t-1 +φ k2 y t-2 +…+φ kk y t-k (6)

[0039] In formula (6), yt is the value in the ground structure sequence {yi} at time t, φk,k is the last regression coefficient, which represents the autocorrelation coefficient between yt and yt-k. Without considering yt-1, yt-2, …, yt-k+1 and φk,k, φk,j can be calculated as follows:

[0040] φ k+1,j =φ k,j -φ k+1,j+1 ×φ k,j+1 +φ k-1,j ,j=1,2,...,k (7)

[0041] According to the result of formula (7), the input variables can be determined by analyzing the graph corresponding to the lag length. The objective function of the evaluation model is f(a, w). A set of ground structure training data sets is {(a0, b0), (a1, b1)…(aN, bN)}, where a is the target input and b is the target output, which is given by the following formula:

[0042]

[0043] In formula (8), w and c represent weight and bias respectively. The vector x in the input space is mapped to the high-dimensional feature space through the nonlinear mapping function φ(x). The ε-SVM model is adopted and the slack variables ξ and ξ* are introduced, which are the standard values ​​of the measured values ​​"higher" and "lower" ε, respectively. The formula is:

[0044]

[0045] Combined with formulas (6)-(7), the prediction results are obtained through weighted linear transformation between adjacent layers. Therefore, after selecting the parameters of the input layer and the output layer, the number of nodes in the hidden layer is determined to obtain the best algorithm evaluation performance.

[0046] Compared with the prior art, the present invention has the following beneficial positive effects:

[0047] The present invention modifies the properties of the soil by combining soil, cement, stimulants, dispersants, etc. to stimulate the chemical bonds of silicon, oxygen, and calcium contained in the soil to react and form calcium carbonate, thereby giving the soil strength properties and turning it into an active carrier, making the filling layer strong and uniform, and facilitating the construction of subsequent processes, thereby making the entire road surface uniform in strength, stable in performance, and less prone to cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0049] Figure 1 This is a schematic diagram of a high-stability ground structure of the present invention;

[0050] Figure 2 It is a flow chart of the construction method for high stability ground;

[0051] Legend: 1-leveling layer, 2-reinforcement layer, 3-waterproof layer, 4-concrete layer, 5-fixing rod, 6-fixing column, 7-concrete layer, 8-seismic layer, 9-filling layer (modified soil). DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of this invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of this invention. Obviously, the described embodiments are only a part of the embodiments of this invention, rather than all the embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the invention. In addition, in the description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the invention.

[0053] like Figure 1 As shown, a high-stability ground structure that is easy to construct includes a leveling layer and a concrete layer;

[0054] The leveling layer is used for leveling, sloping or strengthening the cushion layer, floor slab and filling layer, and the leveling layer is laid 3-5 cm;

[0055] The concrete layer is the middle layer between the reinforced concrete foundation and the foundation soil, used for leveling, isolation, filtering and transition, and the concrete layer is laid 20-30 cm;

[0056] It also includes a filling layer, an anti-vibration layer, a reinforcement layer and a waterproof layer;

[0057] The filling layer has a weight of 550-650 kg / cm 3 Lightweight loose, block and integral material filling, the filling layer is made of modified soil and laid 50-60 cm;

[0058] The shockproof layer is used to mitigate the damage caused by earthquake shaking. The shockproof layer includes a grid frame, a load-bearing mechanism and a buffer mechanism. The grid frame includes a longitudinal beam tube and a transverse beam tube. The longitudinal beam tube is connected to the transverse beam tube through a top clamping block. The load-bearing mechanism is provided with a rubber pad and a rubber block. The buffer mechanism includes a moving plate, two springs and an I-shaped block. The two springs located inside the groove of the I-shaped block are respectively attached to the surface of the moving plate.

[0059] The reinforcement layer is used to improve the foundation strength. The reinforcement layer includes a mesh structure and a fixed column. The mesh structure is composed of transverse ribs and vertical ribs. The transverse ribs are welded to the vertical ribs. The upper end of the fixed column is welded to the mesh structure.

[0060] The waterproof layer comprises a base material and a filling material, wherein the base material is a mixture of polyolefin, polyvinyl chloride, polyvinylidene chloride, polyester and polystyrene, and the filling material is a mixture of glass fiber, polymer fiber, carbon fiber, ceramic fiber, metal fiber, natural fiber and glass flake. The waterproof layer is also paved with calcium carbide to prevent moisture, wherein the chemical reaction equation for moisture-proof application is: CaC2+2H2O=Ca(OH)2+C2H2 (1)

[0061] In formula (1), CaC2 is calcium carbide, Ca(OH)2 is calcium hydroxide, C2H2 is ethylene, and H2O is water.

[0062] Furthermore, the modified soil is mixed with 10% cement, 10% sand, 5% additives, water and soil, the additives include a modifier, an activator and a dispersant, the activator is mixed with 4-6 parts of amine, 2-3 parts of alcohol, 4-9 parts of lignin sulfonate and 7-9 parts of aluminum salt, the dispersant is a condensate of fatty alcohol and ethylene oxide, and the modifier is mixed with 5-8 parts of cellulose, 1-3 parts of urea and 6-10 parts of ethylene-vinyl acetate copolymer.

[0063] Furthermore, the preparation process of the modified soil is as follows: first, cement and soil are mixed, an activator is added during the stirring process to activate the chemical bonds of silicon, oxygen and calcium in the soil, a dispersant is added to reduce the water efficiency, and finally, water is used to crystallize and solidify, and the modified soil is formed by standing for 1-2 days; the chemical changes involved in this process are as follows:

[0064] In formula (2), the components of soil include calcium Ca, silicon Si, oxygen O2 and carbon C, the components of cement include calcium oxide CaO and silicon oxide SiO2, and the components of modified soil include calcium carbonate CaCO3 and silicon carbonate Si(CO3)2.

[0065] The effects of human factors and natural factors on the service life of the pavement and foundation when using modified soil as the filling layer and ordinary soil as the filling layer are shown in Table 1.

[0066] Table 1 Use period table

[0067] factor Temperature ℃ Rain and Snow Drought Vehicle times Modified soil 60 1％ 90 95678 Ordinary soil 40 10％ 20 56436

[0068] Through the above embodiments, it is shown that the present application can extend the service life of the road surface and foundation. The wear degree of the modified filling layer in extreme rain and snow weather is lower than that of the ordinary filling layer. The modified filling layer has a higher temperature tolerance than the ordinary filling layer. In extreme drought weather, the modified filling layer can withstand 45 times the ordinary filling layer, and the number of vehicles passing through the modified filling layer is 17 times that of the ordinary filling layer.

[0069] The experimental evaluation criteria and acquisition process of the optimal ratio of modified soil are shown in Table 2.

[0070] Table 2 Modified soil acquisition and evaluation

[0071] factor cement Sand additive water soil Drought Modified soil 1 15％ 5％ 10％ 50％ 20％ 30 Modified Soil 2 10％ 10％ 5％ 50％ 20％ 90 Modified soil 3 6％ 14％ 10％ 50％ 20％ 36 Modified Soil 4 11％ 15％ 4％ 50％ 20％ 40 Modified soil 5 7％ 13％ 5％ 50％ 20％ 60 Modified soil 6 10％ 16％ 4％ 50％ 20％ 70

[0072] Through the above embodiments, it is explained that the present application can obtain the optimal ingredient ratio of modified cement by mixing different proportions of cement, sand and additives and conducting experiments simultaneously and in the same place under the same degree of drought weather conditions, and then comparing their persistence time.

[0073] Furthermore, there are six rubber pads and six rubber blocks, two buffer mechanisms, and the load-bearing mechanism includes a support plate and a fixing rod. The support plate is fixed to the surface of the movable plate by a hinge, and the fixing rod is connected to the concrete layer.

[0074] Furthermore, the mesh structure is located on the leveling layer, and the lower end of the fixing column is welded to the surface of the I-shaped block.

[0075] Furthermore, the matrix material is prepared from 3-5 parts of polyolefin, 4-6 parts of polyvinyl chloride, 1-3 parts of polyvinylidene chloride, 6-7 parts of polyester and 5-7 parts of polystyrene, and the filling material is melted from 10% of glass fiber, 15% of polymer fiber, 5% of carbon fiber, 30% of ceramic fiber and 40% of natural fiber.

[0076] After a large number of proportioning tests of the matrix material and the filling material, the optimal proportion and the optimal material were gradually obtained through the control variable method, as shown in Table 3.

[0077] Table 3 Obtaining and evaluating base materials and filling materials

[0078]

[0079] The above embodiments illustrate that the present application can obtain the optimal ratio of base material and filling material by preparing different ratios of base material and filling material and conducting experiments simultaneously and in the same place under the same solution conditions, and then comparing their persistence time.

[0080] like Figure 2 As shown, a high-stability ground construction method that is easy to construct is applied to the high-stability ground structure that is easy to construct, including the steps of:

[0081] Step 1: Before measuring, calibrate the measuring instruments and make sure that all measuring instruments are in good condition and without deviation;

[0082] The measuring instruments include a level, a theodolite and a total station. The level is used to measure the high-rise roadbed, high-rise road surface, bridge and culvert elevation and highway longitudinal section. The theodolite is used to measure the centerline, deflection angle and sight distance of highways and bridges. The total station is used for angle measurement, distance measurement, three-dimensional coordinate measurement, traverse measurement, intersection point measurement and layout measurement.

[0083] Step 2: Use the theodolite to place control lines and control points according to the edge line, orientation and elevation of the construction object, and review the data to ensure the accuracy of positioning;

[0084] Step 3: Measure the outer line according to the control line and set gantry piles around the construction object to control the position of the construction object and mark the correct line setting;

[0085] Step 4: Lay out the excavation line according to the outer line and design blueprint and drive the axis piles along the line;

[0086] Step 5: Confirm the soil quality, and if there is no abnormality in the excavation, excavate the foundation trench according to the construction drawing until the trench of the old soil layer is straight and meets the dimensions of the construction drawing;

[0087] Step 6: After excavation, lay a 50-60 cm filling layer, a 20-30 cm concrete layer and a 3-5 cm leveling layer in sequence;

[0088] Step 7: Evaluate and verify the high stability ground structure through the ground structure parameter evaluation model.

[0089] Furthermore, the ground structure parameter evaluation model first decomposes the original data into several components, then uses the support vector machine to predict the inherent model function, and then adds the results to form a comprehensive evaluation result; the original ground structure management data set is X, such as a ratio composition of polyolefin, polyvinyl chloride, polyvinylidene chloride, polyester and polystyrene, and the filling material is glass fiber, polymer fiber, carbon fiber, ceramic fiber, etc., and k data are randomly extracted from the item set X and clustered into cluster R1,

[0090] The properties of modified soil. Soil itself contains chemical bonds such as silicon, oxygen, and calcium, but it does not react chemically. By combining soil, cement, stimulants, dispersants, etc., the chemical bonds contained in the soil are stimulated to react and form calcium carbonate, etc., so that the soil has strength properties and becomes an active carrier. However, different components or structures have different applications for modified soil. In order to improve the data information evaluation and calculation capabilities, different parameters and data information are input to obtain different calculation and application capabilities. The input function is:

[0091]

[0092]

[0093] Through the above input, the evaluation of the ground structure can be achieved.

[0094] In order to improve the calculation ability of different parameters of ground structure, different parameters of ground structure are reflected. Then the specific expression of R1 is:

[0095] R1=X(ky)+X(kx) (3)

[0096] In formula (3), y represents the cluster data item in L1, such as the parameter data information of the ground structure. The candidate cluster of cluster data is M, where the structural data items in the candidate original ground structure management data M need to be selected in R1. The selection basis is the original ground structure management data set E in two-dimensional form without non-data redundant items. The parameters reflecting the ground data information can be converted into function representation through formula (3) to improve the data information calculation ability. Then the expression of the final data set Y obtained after preprocessing is:

[0097] Y=(R1(ky)-E(kc)(kx))+(ky) (4)

[0098] In formula (4), x represents the cluster data item in R1, k represents the total cluster data item, c represents the interference cluster data item, and E represents the cluster data item function under the ideal state. When R1 is formed and satisfies x=y, the two are merged. Similarly, other item sets are merged to finally obtain the data set y to decompose or calculate the ground structure data information computing capability.

[0099] The input data information is preprocessed using formula (4).

[0100] Equation (5) is used to decompose nonlinear and non-stationary data into several intrinsic model function components and a residue:

[0101]

[0102] In formula (5), x(t) is the original time series, IMFi(t) is the i-th intrinsic model function, and Rn(t) is the residual. A white noise sequence is added to the input data, and the data containing white noise is decomposed into the intrinsic model function. The above process is repeated N times with different white noises, and finally the average value of the corresponding intrinsic model function components is obtained as the final decomposition result. The partial autocorrelation coefficient function is combined to eliminate the influence of other variables on the final evaluation result.

[0103] Since there are many data information reflecting ground parameters, the integration of multiple data information can realize the automatic and intelligent calculation of a large amount of ground parameter data information. During the calculation process, some actual parameters reflecting ground data information need to be input. During the calculation process, the PLC programming controller is relied on to provide the control capability of different parameters, thereby improving the data information calculation and application capabilities.

[0104] The jth regression coefficient of the corresponding intrinsic model function when it is lagged by k is defined as φk,j, then the autoregressive model of lag k can be expressed as:

[0105] y t =φ k1 y t-1 +φ k2 y t-2 +…+φ kk y t-k (6)

[0106] In formula (6), yt is the value in the ground structure sequence {yi} at time t, φk,k is the last regression coefficient, which represents the autocorrelation coefficient between yt and yt-k.

[0107] Through this relationship, the relationship between ground parameter data information can be calculated through association to improve the calculation ability of different parameter data information, and then evaluate the precautions when filling the ground, such as forming a material grinding layer between the filling layers. In order to improve the stability of the ground structure, chemical reactions can also be added to the filling layer, such as redox reactions, ion exchange reactions, etc., in this way to fine-tune the ground structure parameters. When a large area needs to be adjusted, it can be done by adding materials, etc.

[0108] Without considering yt-1, yt-2, ..., yt-k+1 and φk,k, φk,j can be calculated as follows:

[0109] φ k+1,j =φ k,j -φ k+1,j+1 ×φ k,j+1 +φ k-1,j ,j=1,2,…,k (7)

[0110] According to the result of formula (7), the input variables can be determined by analyzing the graph corresponding to the lag length. The objective function of the evaluation model is f(a, w). A set of ground structure training data sets is {(a0, b0), (a1, b1)…(aN, bN)}, where a is the target input and b is the target output, which is given by the following formula:

[0111]

[0112] In formula (8), w and c represent weight and bias respectively. The vector x in the input space is mapped to the high-dimensional feature space through the nonlinear mapping function φ(x). The ε-SVM model is adopted and the slack variables ξ and ξ* are introduced, which are the standard values ​​of the measured values ​​"higher" and "lower" ε, respectively. The formula is:

[0113]

[0114] Combined with formulas (6)-(7), the prediction results are obtained through weighted linear transformation between adjacent layers. Therefore, after selecting the parameters of the input layer and the output layer, the number of nodes in the hidden layer is determined to obtain the best algorithm evaluation performance.

[0115] Using modified soil for road construction, factory foundation construction, etc. can reduce thickness, construction procedures and construction costs. At the same time, using modified soil as a filling layer can make the overall strength of the formed foundation stable and consistent, and reduce the surface granularity (dust thickness).

[0116] The intrinsic model function (intrinsic liquid model function) used in the above embodiment refers to a model function existing inside the ground structure and related to the surface of the ground structure and the shape of the container. It is designed based on the physical properties of the surface of the ground structure, and describes the shape and size of the microstructure inside the ground structure, as well as the ability of the ground structure to move on the surface.

[0117] In the above embodiment, the surface of the ground structure is a discrete, geometric point, and the physical properties of this point are described by three parameters (shape parameters), which describe the shape and size on the surface of the ground structure. At the same time, there are also shape parameters inside the ground structure, which describe the shape and size of the microstructure inside the ground structure. The intrinsic model function describes the shape and size of the microstructure inside the ground structure. Through the above embodiment, the present invention has outstanding substantial characteristics and progress, and can greatly improve the stability construction capability of the ground structure.

[0118] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these specific embodiments are only illustrative, and those skilled in the art may omit, replace, and change the details of the above methods and systems in various ways without departing from the principles and essence of the present invention. For example, merging the above method steps so as to perform substantially the same functions in substantially the same manner to achieve substantially the same results is within the scope of the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

Claims

1. A high-stability ground structure that is easy to construct, comprising a leveling layer and a concrete layer; the leveling layer is used for leveling, sloping or strengthening the cushion layer, floor slab and filling layer, and the leveling layer is laid 3-5 cm; the concrete layer is the middle layer between the reinforced concrete foundation and the foundation soil, used for leveling, isolation, filtering and transition, and the concrete layer is laid 20-30 cm; it is characterized by: The ground structure also includes a filling layer, an anti-vibration layer, a reinforcement layer and a waterproof layer; among which: The filling layer has a weight of 550-650 kg / cm 3 Lightweight loose, block and integral material filling, the filling layer is made of modified soil and laid 50-60 cm; The shockproof layer is used to mitigate the damage caused by earthquake shaking. The shockproof layer includes a grid frame, a load-bearing mechanism and a buffer mechanism. The grid frame includes a longitudinal beam tube and a transverse beam tube. The longitudinal beam tube is connected to the transverse beam tube through a top clamping block. The load-bearing mechanism is provided with a rubber pad and a rubber block. The buffer mechanism includes a moving plate, two springs and an I-shaped block. The two springs located inside the groove of the I-shaped block are respectively attached to the surface of the moving plate. The reinforcement layer is used to improve the foundation strength. The reinforcement layer includes a mesh structure and a fixed column. The mesh structure is composed of transverse ribs and vertical ribs. The transverse ribs are welded to the vertical ribs. The upper end of the fixed column is welded to the mesh structure. The waterproof layer includes a base material and a filling material, wherein the base material is a mixture of polyolefin, polyvinyl chloride, polyvinylidene chloride, polyester and polystyrene, and the filling material is a mixture of glass fiber, polymer fiber, carbon fiber, ceramic fiber, metal fiber, natural fiber and glass flake. The waterproof layer is also paved with calcium carbide to prevent moisture, wherein the chemical reaction equation for moisture-proof application is: CaC2+2H2O=Ca(OH)2+C2H2(1) In formula (1), CaC2 is calcium carbide, Ca(OH)2 is calcium hydroxide, C2H2 is ethylene, and H2O is water.

2. A high-stability ground structure that is easy to construct according to claim 1, characterized in that: The modified soil is mixed with 10% cement, 10% sand, 5% additives, water and soil. The additives include a modifier, an activator and a dispersant. The activator is mixed with 4-6 parts of amine, 2-3 parts of alcohol, 4-9 parts of lignin sulfonate and 7-9 parts of aluminum salt. The dispersant is a condensate of fatty alcohol and ethylene oxide. The modifier is mixed with 5-8 parts of cellulose, 1-3 parts of urea and 6-10 parts of ethylene-vinyl acetate copolymer.

3. A high-stability ground structure that is easy to construct according to claim 2, characterized in that: The preparation process of the modified soil is as follows: firstly mix cement and soil, add an activator during the stirring process to activate the chemical bonds of silicon, oxygen and calcium in the soil, then add a dispersant to reduce the water efficiency, and finally use water to crystallize and solidify, and let it stand for 1-2 days to form the modified soil; Apply chemical methods to observe changes in real time: In formula (2), the components of soil include calcium Ca, silicon Si, oxygen O2 and carbon C, the components of cement include calcium oxide CaO and silicon oxide SiO2, and the components of modified soil include calcium carbonate CaCO3 and silicon carbonate Si(CO3)2. When calcium carbonate and silicon carbonate form a solid, it means that modified soil is formed.

4. The high-stability ground structure that is easy to construct according to claim 1 is characterized by: There are six rubber pads and six rubber blocks, two buffer mechanisms, and the load-bearing mechanism comprises a support plate and a fixing rod. The support plate is fixed to the surface of the moving plate by a hinge, and the fixing rod is connected to the concrete layer.

5. The high-stability ground structure that is easy to construct according to claim 1 is characterized by: The mesh structure is located on the leveling layer, and the lower end of the fixing column is welded to the surface of the I-shaped block.

6. The high-stability ground structure that is easy to construct according to claim 1, characterized in that: The matrix material is prepared from 3-5 parts of polyolefin, 4-6 parts of polyvinyl chloride, 1-3 parts of polyvinylidene chloride, 6-7 parts of polyester and 5-7 parts of polystyrene, and the filling material is melted from 10% of glass fiber, 15% of polymer fiber, 5% of carbon fiber, 30% of ceramic fiber and 40% of natural fiber.

7. A high-stability ground construction method that is easy to construct, characterized in that: A method for constructing a high-stability ground structure that is easy to construct as described in any one of claims 1 to 6, comprising the steps of: Step 1: Before measuring, calibrate the measuring instruments and make sure that all measuring instruments are in good condition and without deviation; The measuring instruments include a level, a theodolite and a total station. The level is used to measure the high-rise roadbed, high-rise road surface, bridge and culvert elevation and highway longitudinal section. The theodolite is used to measure the centerline, deflection angle and sight distance of highways and bridges. The total station is used for angle measurement, distance measurement, three-dimensional coordinate measurement, traverse measurement, intersection point measurement and layout measurement. Step 2: Use the theodolite to place control lines and control points according to the edge line, orientation and elevation of the construction object, and review the data to ensure the accuracy of positioning; Step 3: Measure the outer line according to the control line and set gantry piles around the construction object to control the position of the construction object and mark the correct line setting; Step 4: Lay out the excavation line according to the outer line and design blueprint and drive the axis piles along the line; Step 5: Confirm the soil quality and dig the foundation trench according to the construction drawing until the trench of the old soil layer is straight and meets the dimensions of the construction drawing. Step 6: After excavation, lay a 50-60 cm filling layer, a 40-50 cm earthquake-proof layer, a 20-30 cm concrete layer, a 15-25 cm waterproof layer, a 3-5 cm leveling layer, and a reinforcement layer fixed between the leveling layer and the concrete layer in sequence; Step 7: Evaluate and verify the high stability ground structure through the ground structure parameter evaluation model.

8. The high-stability ground structure that is easy to construct according to claim 7, characterized in that: The working method of the ground structure parameter evaluation model is: First, the original data is decomposed into several components, and then the support vector machine is used to predict the inherent model function, and then the results are added to form a comprehensive evaluation result; the original ground structure management data set is X, and k data are randomly extracted from the project set X and clustered into cluster set R1. The specific expression of R1 is: R1=X(ky)+X(kx)(3) In formula (3), y represents the cluster data item in L1, the candidate cluster of cluster data is M, where the construction data item in the candidate original ground structure management data M needs to be selected in R1, and the selection basis is the original ground structure management data set E in two-dimensional form that contains non-data redundant items. The expression of the final data set Y obtained after preprocessing is: Y=(R1(ky)-E(kc)(kx))+(ky)(4) In formula (4), x represents the cluster data item in R1, k represents the total cluster data item, c represents the interference cluster data item, and E represents the cluster data item function under the ideal state. When R1 is formed and satisfies x = y, the two are merged. Similarly, other item sets are merged to finally obtain the data set y. Equation (5) is used to decompose nonlinear and non-stationary data into several inherent model function components and a remainder: In formula (5), x(t) is the original time series, IMFi(t) is the i-th intrinsic model function, and R n (t) is the residual amount, n represents the number of calculations; Add a white noise sequence to the input data, decompose the data containing white noise into the intrinsic model function, repeat the above process N times with different white noise, and finally get the average value of the corresponding intrinsic model function components as the final decomposition result. Combine the partial autocorrelation coefficient function to eliminate the influence of other variables on the final evaluation result. Define the jth regression coefficient of the corresponding intrinsic model function when it is lagged k as φk,j. Then the autoregressive model of lag k can be expressed as: y t =φ k1 y t-1 +φ k2 y t-2 +…+φ kk y t-k (6) In formula (6), y t is the value in the ground structure sequence {yi} at time t, φ k ,k is the last regression coefficient, indicating that y t and t-k The autocorrelation coefficient between t-1 ,y t-2 , …, y t-k+1 and φ k ,k can calculate φ k ,j is as follows: f k+1,j =φ k,j -f k+1,j+1 ×φ k,j+1 +φ k-1,j ,j=1,2,…,k(7) According to the result of formula (7), the input variables can be determined by analyzing the graph corresponding to the lag length. The objective function of the evaluation model is f(a, w). A set of ground structure training data sets is {(a0, b0), (a1, b1)…(aN, bN)}, where a is the target input and b is the target output, which is given by the following formula: In formula (8), w and c represent weight and bias respectively. The vector x in the input space is mapped to the high-dimensional feature space through the nonlinear mapping function φ(x). The ε-SVM model is adopted and the slack variables ξ and ξ* are introduced, which are the standard values ​​of the measured values ​​"higher" and "lower" ε, respectively. The formula is: Combined with formulas (6)-(7), the prediction results are obtained through weighted linear transformation between adjacent layers. Therefore, after selecting the parameters of the input layer and the output layer, the number of nodes in the hidden layer is determined to obtain the best algorithm evaluation performance.

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