Intelligent calculation system and method for load distribution of basement roof and reinforcing structure

Abstract

The invention discloses an intelligent calculation system and method for load distribution of a basement roof and a reinforcing structure, and the system comprises a basement floor plate rigidity calculation model which carries out the pre-training based on a machine learning technology, and can output the rigidity of each floor plate of a basement after inputting basement structure information and load information; and the load distribution calculation model is used for calculating the rigidity of each layer of supporting structure of the basement, simplifying a basement top plate, each layer of supporting structure of the basement and each layer of floor slab of the basement into a spring group, and carrying out load distribution calculation on an acting load value F on the basement top plate. The calculation efficiency of load distribution is much higher than that of a traditional finite element calculation method; the calculation can be completed only by collecting a few simple parameters, so that the operation is simpler; in addition, the method can be suitable for calculation of different plate spans under any load length and width, can cover more application scenes, and has the advantage of high adaptability.

Description

Technical Field

[0001] The invention relates to load calculation of underground structures, and in particular to an intelligent calculation system and method for load distribution of a basement top plate and a reinforcement structure. Background Art

[0002] During the construction process, various construction conditions with basement roof structures as load-bearing structures are often involved. In these construction conditions, the basement roof will bear various forms of loads, such as passenger and freight elevator loads, material yard loads, and vehicle crane outrigger loads. When the load is large, support structures such as racks or steel structures will be used for reinforcement. In order to determine whether the basement roof meets the force requirements after reinforcement, it is necessary to clarify the load distribution relationship between the basement roof and the support structure.

[0003] Existing calculation methods often require the use of finite element software to build a structural model for verification. When calculating different working conditions, it is necessary to build different finite element models, and repeat modeling operations such as boundary condition setting, component information entry, load information entry, and meshing. The process is cumbersome and time-consuming. Alternatively, theoretical calculation methods are used to assume that the supporting structure has infinite stiffness for calculation. However, in fact, the stiffness of the supporting structure will affect the load on the basement roof.

[0004] Therefore, it is necessary to propose a new intelligent calculation method for load distribution of basement roof and its reinforcement structure. Summary of the invention

[0005] The present invention provides an intelligent calculation system and method for the load distribution of the basement roof and reinforcement structure. Based on machine learning technology, the load distributed to the basement roof structure and the reinforcement structure can be quickly obtained through simple parameter input. The system and method can solve the problems of complex modeling process, time-consuming calculation, repeated calculation under different working conditions, unreasonable theoretical assumptions and inaccurate calculation results of traditional finite element analysis methods.

[0006] In order to solve the above technical problems, the present invention includes the following technical solutions: An intelligent calculation system for basement top plate and reinforcement structure load distribution, comprising: The stiffness calculation model of each floor of the basement is pre-trained based on machine learning technology. After inputting the basement structure information and load information, it can output the stiffness of each floor of the basement. K b,i-1 , i =1,2,…, n , K b,0 is the stiffness of the basement roof, K b,1 ~ K b,n-1Respectively No. 1~ n -1st basement floor slab stiffness, n is the total number of basement floors; Load distribution calculation model to calculate the stiffness of the supporting structure of each basement floor K z,i , simplifying the basement top plate, basement support structures, and basement floor plates into spring groups, and the load value acting on the basement top plate is F Carry out load distribution calculation to obtain the load shared by each floor slab of the basement F b,i-1 and the loads shared by the supporting structures of each basement floor F z,i ,in, F b,0 The load shared by the basement top slab; in, , In the formula, E z is the elastic modulus of the supporting structure material, A zi For the i Total cross-sectional area of ​​the layer support structure, H i For the i Basement floor height.

[0007] Furthermore, when the number of basement floors is 1, the basement roof and supporting structure are simplified into a parallel spring group; when the number of basement floors is greater than or equal to 2, the basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into a series-parallel mixed spring group. Specifically, i -1 floor slab is regarded as the first spring, i The support structure is regarded as the second spring. i The combination of the floor slabs and the supporting structures of each layer below the layer supporting structure is regarded as the third spring. The third spring is connected in series with the second spring and then in parallel with the first spring.

[0008] further, , ( i =1~ n ), , ( i =1~ n ), In the formula, F b,0 Share the load for the basement roof. F b,1 ~ F b,n-1 Respectively No. 1~ n -The load shared by the 1st basement floor,F z,i For the i The load shared by the supporting structure, K zeq,i For the i The combined stiffness of the layer support structure and all supporting structures and floor slabs below; in, , ( i =1~ n -1).

[0009] Furthermore, when pre-training the calculation model for the stiffness of each floor slab of the basement, a training data set is first established. The training data set includes several groups of training data, and each group of training data includes basement structure information, load information, and stiffness information of each floor slab of the basement.

[0010] Furthermore, the basement roof and reinforcement structure load distribution intelligent calculation system also includes an information collection and processing module for extracting basement structure information and load information from existing data, and converting the basement structure information and load information units into preset standard units; During pre-training, the information collection and processing module can also extract the stiffness information of each basement floor from the existing data, and convert the stiffness information of each basement floor into preset standard units.

[0011] Further, the basement structure information includes: slab span length L , Board span width B , Basement roof thickness h b,0 , No. n The thickness of the basement floor is recorded as h b,n , elastic modulus of plate material E , Poisson's ratio of plate material ν , Number of basement floors n , where the board span length L , Board span width B , Basement roof thickness h b,0 , No. n The thickness of the basement floor is recorded as h b,n The unit is unified as m, the elastic modulus of the plate material E The unit is MPa, the Poisson's ratio of the plate material ν and number of basement floors n The units are dimensionless; Load information includes: Load value F , load action length L F , Load action width BF , the relative distance between the load center and the plate center x and y ; Load value F The unit is kN, the load action length L F , Load action width B F and the relative distance between the load center and the plate center x and y The unit is m.

[0012] Accordingly, the present invention also provides a method for intelligent calculation of load distribution of basement roof and reinforcement structure, using the intelligent calculation system for load distribution of basement roof and reinforcement structure, the method comprises the following steps: Collect basement structure information and load information; The collected basement structure information and load information are input into the basement floor slab stiffness calculation model, and the basement floor slab stiffness calculation model outputs the basement floor slab stiffness. K b,i-1 ; The load distribution calculation model calculates the stiffness of the supporting structure of each basement floor K z,i , and combined with K b,i-1 , K z,i The basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into spring groups; The load distribution calculation model is based on a simplified spring group, with load values ​​acting on the basement roof F Carry out load distribution calculation to obtain the load shared by each floor slab of the basement F b,i-1 , and the loads shared by the supporting structures of each basement floor F z,i .

[0013] Furthermore, when the number of basement floors is 1, the basement roof and supporting structure are simplified to a parallel spring group; When the number of basement floors is greater than or equal to 2, the basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into a series-parallel mixed spring group. Specifically, i -1 floor slab is regarded as the first spring, i The support structure is regarded as the second spring. i The combination of the floor slabs and the supporting structures of each layer below the layer supporting structure is regarded as the third spring. The third spring is connected in series with the second spring and then in parallel with the first spring.

[0014] further, , ( i=1~ n ), , ( i =1~ n ), In the formula, F b,0 Share the load for the basement roof. F b,1 ~ F b,n-1 Respectively No. 1~ n -The load shared by the 1st basement floor, F z,i For the i The load shared by the supporting structure, K zeq,i For the i The combined stiffness of the layer support structure and all supporting structures and floor slabs below; in, , ( i =1~ n -1).

[0015] Furthermore, the stiffness calculation model of each floor slab of the basement is a pre-trained model. During the pre-training, a training data set is first established. The training data set includes several groups of training data. Each group of training data includes basement structure information, load information and stiffness information of each floor slab of the basement. The intelligent calculation system for basement top plate and reinforced structure load distribution also includes an information collection and processing module. During pre-training, the information collection and processing module is used to extract basement structure information, load information, and basement floor slab stiffness information from existing data, and convert the units of basement structure information, load information, and basement floor slab stiffness information into preset standard units.

[0016] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art: based on the calculation model of the stiffness of the basement floor slabs, the present invention can quickly output the stiffness of the basement floor slabs after inputting the basement structure information and load information. K b,i-1 , the load distribution calculation model is used to quickly calculate the stiffness of the supporting structure of each floor of the basement K z,i , combined with K b,i-1 , K z,i The basement top plate, basement support structures, and basement floor plates are simplified into spring groups to calculate the loads shared by the basement floor plates. F b,i-1 and the loads shared by the supporting structures of each basement floorF z,i The calculation efficiency of the present invention is much higher than that of the traditional finite element calculation method; moreover, the present invention only needs to collect a few simple parameters to complete the calculation, and the operation is simpler; in addition, the present invention can be applied to the calculation of different plate spans under any load length and width, and can cover a variety of application scenarios including but not limited to passenger and freight elevator loads, automobile crane reaction loads, material yards, etc., and also has the advantage of strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a basement roof and reinforcement structure load distribution intelligent computing system in one embodiment of the present invention; Figure 2 It is a simplified schematic diagram of a spring group when the number of basement floors is 1 in one embodiment of the present invention; Figure 3 It is a simplified schematic diagram of a spring group when the number of basement floors is 2 in one embodiment of the present invention; Figure 4 It is a simplified schematic diagram of a spring group when the number of basement floors is 3 or more in one embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the intelligent calculation system and method for basement roof and reinforced structure load distribution provided by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer in conjunction with the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0019] like Figure 1 As shown, the basement roof and reinforcement structure load distribution intelligent calculation system provided in this embodiment includes a basement floor slab stiffness calculation model and a load distribution calculation module. The basement floor slab stiffness calculation model can output the stiffness of each basement floor slab after inputting the basement structure information and load information. The load distribution calculation model can perform load distribution calculation and output the load shared by the basement roof, supporting structure, and basement floor slab based on the supporting structure information and the stiffness of each basement floor slab output by the basement floor slab stiffness calculation model.

[0020] For example, basement structural information includes: slab span length L , Board span width B , Basement roof thickness h b,0 , No. n The thickness of the basement floor is recorded as h b,n , elastic modulus of plate material E , Poisson's ratio of plate material ν, Number of basement floors n , where the board span length L , Board span width B , Basement roof thickness h b,0 , No. n The thickness of the basement floor is recorded as h b,n The unit is unified as m, the elastic modulus of the plate material E The unit is MPa, the Poisson's ratio of the plate material ν and number of basement floors n The unit is dimensionless. Load information includes: Load value F , load action length L F , Load action width B F , the relative distance between the load center and the plate center x and y ; Load value F The unit is kN, the load action length L F , Load action width B F and the relative distance between the load center and the plate center x and y The unit is m. You can also set the value range, for example, the board span length L and board span width B The value range is 1.5m~15m, the thickness of the basement top plate h b,0 and n Thickness of basement floor h b,n The value range is 0.01m~1m, and the load action length L F The value range is 0.1m~0.5 L , load action width B F The value range is 0.1m~0.5 B , the relative distance between the load center and the plate center x ( y )The value range is 0 m~0.5 L ( B ).

[0021] The stiffness calculation model of each floor slab of the basement integrates machine learning functions. The model form is not limited. Neural network models such as CNN (convolutional neural network), RNN (recurrent neural network) and Transformer (converter model) can be used to construct the stiffness calculation model of each floor slab of the basement. The stiffness calculation model of each floor slab of the basement is a pre-trained model. During pre-training, a training data set is first established. The training data set includes several groups of training data. Each group of training data includes basement structure information, load information and stiffness information of each floor slab of the basement. To ensure the training effect, the training data set needs to exceed 10,000 groups of training data. Preferably, the intelligent calculation system for load distribution of the basement top slab and reinforcement structure also includes an information acquisition and processing module, which is used to extract the basement structure information and load information from the existing data, and perform unit conversion on the basement structure information and load information. In addition to the aforementioned functions, during pre-training, the stiffness information of each floor slab of the basement can also be extracted from the existing data, and the stiffness information of each floor slab of the basement can be converted. Among them, the stiffness information of each floor slab of the basement includes the stiffness of the basement top slab. K b,0 , No. i The stiffness of the basement floor K b,i , i =1,2,…, n , n is the total number of basement floors. During pre-training, optimization algorithms such as SGD and Adam can be used until the target loss function reaches the preset expected value, and then the training can be stopped. After the training is completed, after the basement structure information and load information are input into the basement floor slab stiffness calculation model, the model can output the stiffness of each basement floor slab, including K b,0 , K b,i .

[0022] The load distribution calculation module is preset i Basement support structure stiffness K z,i The calculation formula is, where , In the formula, E z is the elastic modulus of the supporting structure material, F z,i For the i The loads shared by the supporting structure are A zi For the i Total cross-sectional area of ​​the layer support structure, H i For the iBasement floor height.

[0023] The load distribution calculation module also presets the basement top plate load sharing F b,0 The calculation formula of the load shared by the first layer support structure F z,1 The calculation formula of i Loads shared by the supporting structure F z,i The calculation formula for .

[0024] like Figure 2 As shown, when the number of basement floors is 1, the load F The load is shared by the basement roof and the first-floor supporting structure. Since the displacement and deformation of the two are consistent, they can be regarded as a parallel spring group. Among them: Basement roof load F b,0 The calculation formula is: , Load shared by basement 1 support F z,1 The calculation formula is: .

[0025] like Figure 3 As shown, when the number of basement floors is 2, the load F The load is shared by four structures: the basement top plate and the first-layer supporting structure, the first-layer basement floor plate, and the second-layer supporting structure. Since the displacement of the top of the first-layer supporting structure is consistent with that of the basement top plate, and the displacement of the top of the second-layer supporting structure is consistent with that of the first-layer basement floor plate, the four structures can be regarded as a series-parallel mixed spring group. Among them: Basement roof load F b,0 The calculation formula is: , Load shared by the first support F z,1 The calculation formula is: , Load shared by the second layer support structure F z,2 The calculation formula is: , Load shared by the first basement floor F b,1 The calculation formula is: ; In the formula Kzeq,1 The combined stiffness of the first-floor basement support, the second-floor basement support and the first-floor basement slab can be calculated using the following formula: .

[0026] like Figure 4 As shown, when the number of basement floors is n ( n >2), load F The basement roof and the 1st n Layer support structure, basement 1~( n -1) Floor slab total 2 n The structure is shared, because n Layer support structure top and basement n -1 layer displacement is consistent, 2 n The structure is considered as a mixed series-parallel spring group. Specifically, i -1 floor slab is regarded as the first spring, i The support structure is regarded as the second spring. i The combination of the floor slabs and supporting structures of each layer below the layer supporting structure is regarded as the third spring. The third spring is connected in series with the second spring and then in parallel with the first spring. The stiffness of each spring adopts the stiffness of the corresponding structure. Among them: Basement roof load F b,0 The calculation formula is: , Load shared by the first layer supporting structure F z,1 The calculation formula is: , No. i -Load shared by the 1st basement floor F b,i-1 The calculation formula is: , ( i =2~ n -1), No. i Load shared by the supporting structure F z,i , the calculation formula is: , ( i =2~ n -1), in K zeq,i For the iThe combined stiffness of the basement support structure and all supporting structures below it and the floor slabs of each basement floor is calculated as follows: , ( i =1~ n -1); No. n -Load shared by the 1st basement floor F b,n-1 , the calculation formula is: , No. n Load shared by the supporting structure F z,n , the calculation formula is: .

[0027] Embodiment 1

[0028] This embodiment provides a method for intelligent calculation of load distribution of a basement roof and reinforcement structure, using the intelligent calculation system for load distribution of a basement roof and reinforcement structure described in Embodiment 1. The method includes the following steps: Collect basement structure information and load information; The collected basement structure information and load information are input into the basement floor slab stiffness calculation model, and the basement floor slab stiffness calculation model outputs the basement floor slab stiffness. K b,i-1 ; The load distribution calculation model calculates the stiffness of the supporting structure of each basement floor K z,i , and combined with K b,i-1 , K z,i The basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into spring groups; The load distribution calculation model is based on a simplified spring group, with load values ​​acting on the basement roof F Carry out load distribution calculation to obtain the load shared by each floor slab of the basement F b,i-1 , and the loads shared by the supporting structures of each basement floor F z,i .

[0029] The specific simplification method of the spring group, the specific formula of load distribution, and the specific method of pre-training can all refer to the description in the first embodiment.

[0030] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An intelligent calculation system for basement roof and reinforcement structure load distribution, characterized in that: include: The basement floor slab stiffness calculation model is pre-trained based on machine learning technology. It can output the stiffness of each basement floor slab after inputting the basement structure information and load information. K b,i-1 , i =1,2,…, n , K b,0 is the stiffness of the basement roof, K b,1 ~ K b,n-1 Respectively No. 1~ n -1st basement floor slab stiffness, n is the total number of basement floors; Load distribution calculation model to calculate the stiffness of the supporting structure of each basement floor K z,i , simplifying the basement top plate, basement support structures, and basement floor plates into spring groups, and the load value acting on the basement top plate is F Carry out load distribution calculation to obtain the load shared by each floor slab of the basement F b,i-1 and the loads shared by the supporting structures of each basement floor F z,i ,in, F b,0 The load shared by the basement top slab; in, , In the formula, E z is the elastic modulus of the supporting structure material, A zi For the i Total cross-sectional area of ​​the layer support structure, H i For the i Basement floor height.

2. The basement roof and reinforcement structure load distribution intelligent calculation system according to claim 1, characterized in that: When the number of basement floors is 1, the basement roof and supporting structure are simplified to a parallel spring group; When the number of basement floors is greater than or equal to 2, the basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into a series-parallel mixed spring group. Specifically, i -1 floor slab is regarded as the first spring, i The support structure is regarded as the second spring. i The combination of the floor slabs and the supporting structures of each layer below the layer supporting structure is regarded as the third spring. The third spring is connected in series with the second spring and then in parallel with the first spring.

3. The basement roof and reinforcement structure load distribution intelligent computing system according to claim 1, characterized in that: ，( i =1~ n )， ，( i =1~ n )， In the formula, F b,0 Share the load for the basement roof. F b,1 ~ F b,n-1 Respectively No. 1~ n -The load shared by the 1st basement floor, F z,i For the i The load shared by the supporting structure, K zeq,i For the i The combined stiffness of the layer support structure and all supporting structures and floor slabs below; in, , ( i =1~ n -1).

4. The basement roof and reinforcement structure load distribution intelligent computing system according to claim 1, characterized in that: When pre-training the calculation model for the stiffness of each floor slab of the basement, a training data set is first established. The training data set includes several groups of training data, and each group of training data includes basement structure information, load information, and stiffness information of each floor slab of the basement.

5. The basement roof and reinforcement structure load distribution intelligent computing system according to claim 4, characterized in that: The basement top plate and reinforcement structure load distribution intelligent calculation system also includes an information collection and processing module, which is used to extract basement structure information and load information from existing data, and convert the basement structure information and load information units into preset standard units; During pre-training, the information collection and processing module can also extract the stiffness information of each basement floor from the existing data, and convert the stiffness information of each basement floor into preset standard units.

6. The basement roof and reinforcement structure load distribution intelligent calculation system according to any one of claims 1 to 5, characterized in that: Basement structural information includes: slab span length L , Board span width B , Basement roof thickness h b,0 , No. n The thickness of the basement floor is recorded as h b,n , elastic modulus of plate material E , Poisson's ratio of plate material ν , Number of basement floors n , where the board span length L , Board span width B , Basement roof thickness h b,0 , No. n The thickness of the basement floor is recorded as h b,n The unit is unified as m, the elastic modulus of the plate material E The unit is MPa, the Poisson's ratio of the plate material ν and number of basement floors n The units are dimensionless; Load information includes: Load value F , load action length L F , Load action width B F , the relative distance between the load center and the plate center x and y ; Load value F The unit is kN, the load action length L F , Load action width B F and the relative distance between the load center and the plate center x and y The unit is m.

7. An intelligent calculation method for basement roof and reinforcement structure load distribution, characterized in that: Using the basement roof and reinforcement structure load distribution intelligent calculation system as claimed in claim 1, the method comprises the following steps: Collect basement structure information and load information; The collected basement structure information and load information are input into the basement floor slab stiffness calculation model, and the basement floor slab stiffness calculation model outputs the basement floor slab stiffness. K b,i-1 ; The load distribution calculation model calculates the stiffness of the supporting structure of each basement floor K z,i , and combined with K b,i-1 , K z,i The basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into spring groups; The load distribution calculation model is based on a simplified spring group, with load values ​​acting on the basement roof F Carry out load distribution calculation to obtain the load shared by each floor slab of the basement F b,i-1 , and the loads shared by the supporting structures of each basement floor F z,i .

8. The intelligent calculation method for basement roof and reinforcement structure load distribution according to claim 7 is characterized in that: When the number of basement floors is 1, the basement roof and supporting structure are simplified to a parallel spring group; When the number of basement floors is greater than or equal to 2, the basement roof, supporting structures of each floor, and floor slabs of each floor are simplified into a series-parallel mixed spring group. Specifically, i -1 floor slab is regarded as the first spring, i The support structure is regarded as the second spring. i The combination of the floor slabs and the supporting structures of each layer below the layer supporting structure is regarded as the third spring. The third spring is connected in series with the second spring and then in parallel with the first spring.

9. The intelligent calculation method for basement roof and reinforcement structure load distribution according to claim 8, characterized in that: ，( i =1~ n )， ，( i =1~ n )， In the formula, F b,0 Share the load for the basement roof. F b,1 ~ F b,n-1 Respectively No. 1~ n -The load shared by the 1st basement floor, F z,i For the i The load shared by the supporting structure, K zeq,i For the i The combined stiffness of the layer support structure and all supporting structures and floor slabs below; in, , ( i =1~ n -1).

10. The intelligent calculation method for basement roof and reinforcement structure load distribution according to claim 7, characterized in that: The stiffness calculation model of each floor slab of the basement is a pre-trained model. During the pre-training, a training data set is first established. The training data set includes several groups of training data. Each group of training data includes basement structure information, load information and stiffness information of each floor slab of the basement. The intelligent calculation system for basement top plate and reinforced structure load distribution also includes an information collection and processing module. During pre-training, the information collection and processing module is used to extract basement structure information, load information, and basement floor slab stiffness information from existing data, and convert the units of basement structure information, load information, and basement floor slab stiffness information into preset standard units.

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