Underground structure integrated calculation method based on three-dimensional information model

Abstract

The invention discloses an underground structure integrated calculation method based on a three-dimensional information model, and the method comprises the steps: building an underground structure three-dimensional information model according to the composition of a plurality of components in an underground structure; performing initialization analysis on the established three-dimensional information model of the underground structure, and constructing an overall calculation model; carrying out definition classification arrangement on the load of the underground structure, and adding the load to the overall calculation model; establishing transfer rules of various loads and internal forces among the calculation units on the overall calculation model; retrieving the spatial relationship knowledge graph among the calculation units, performing component spatial association on unique quantization codes of various loads and internal forces among the calculation units, and performing integrated calculation of the underground structure; reinforcement calculation of each component is completed; according to the method, the calculation efficiency of the underground structure is powerfully improved.

Description

Technical Field

[0001] The present invention relates to the field of underground structure calculation, and particularly to an integrated calculation method for underground structures based on a three-dimensional information model. Background Art

[0002] Since the calculation of underground structures is greatly affected by geological conditions and the main loads affecting the structures are also different, the calculation methods for underground structures are essentially different from those for above-ground structures. The basic method for calculating underground structures at the present stage is to disassemble and calculate each component such as beams, slabs, and columns of the deeply buried underground structure separately; usually, the calculation of the wall panels of the underground structure is carried out first. By selecting the cross-section of the wall panel frame of the typical horizontal unit of the underground structure and combining with the geological environment, each load acting on each unit frame is calculated manually, and finally, a two-dimensional calculation is carried out using finite element software to obtain the internal force, and then the reinforcement calculation is carried out for each cross-section; the calculation method for beams is to take out each beam in the underground structure separately, calculate each load acting on the beam manually, carry out a two-dimensional calculation using finite element software, and then carry out the reinforcement calculation after obtaining the internal force; the calculation method for columns is generally to select each type of column separately, calculate each load acting on the column manually, and then use other software to calculate the axial compression ratio, reinforcement, etc. of the column; after disassembling each component and calculating with the help of a series of software, the calculation results are integrated.

[0003] However, the above-mentioned calculation and reinforcement methods for underground structures often have problems such as being unintuitive, having many errors and omissions, low design efficiency, and requiring multiple different program software to implement. In order to further improve the calculation efficiency of underground structures, the existing calculation methods need to improve and innovate the underground structure calculation system and methods, that is, by combining the continuously developing computer technology with the three-dimensional spatial visualization information model of underground structures, to achieve the initial parametric analysis of each component of the underground structure, thereby changing the fundamental defects of the traditional calculation mode. Summary of the Invention

[0004] In order to solve the problems existing in the existing calculation and reinforcement methods for underground structures, such as being unintuitive, having many errors and omissions, low design efficiency, and requiring multiple different program software to implement, the present invention provides an integrated calculation method for underground structures based on a three-dimensional information model, which can efficiently improve the calculation efficiency and does not require multiple different program software; to achieve the above object, the present invention is realized through the following technical solutions:

[0005] An integrated calculation method for underground structures based on a three-dimensional information model, comprising the following steps:

[0006] Step S1, establish a three-dimensional information model of the underground structure according to the composition of multiple components in the underground structure, where the multiple components at least include slabs, beams, columns, and walls;

[0007] Step S2: Initialize and analyze the established 3D information model of the underground structure to construct an overall calculation model;

[0008] The specific steps of Step S2 include:

[0009] Step S21: Classify and identify multiple components within the 3D information model of the underground structure;

[0010] Step S22: Correspondingly transform and divide the multiple classified and identified components into multiple calculation units;

[0011] Step S23: Divide the multiple calculation units into four types of core units, and form an overall calculation model with the four types of core units;

[0012] Step S3: Define, classify, and sort out the loads of the underground structure, and add them to the overall calculation model;

[0013] Step S4: Establish transfer rules for various loads and internal forces between each calculation unit on the overall calculation model;

[0014] Step S5: Retrieve the knowledge graph of the spatial relationship between each calculation unit, perform component spatial association on the unique quantitative coding of various loads and internal forces between each calculation unit, and perform integrated calculation of the underground structure;

[0015] Step S6: Complete the reinforcement calculation of each component.

[0016] Preferably, the four types of core units in Step S23 are wall units, slab units, beam units, and column units respectively. The wall units include at least one or more of the outer wall surface unit and the inner wall surface unit. The slab units include at least one or more of the top slab unit, the bottom slab unit, and the intermediate layer slab unit.

[0017] Preferably, the underground structure loads in Step S3 include at least soil and water loads, surcharges, self-weight loads, various internal structure loads, and live loads. The live loads include at least one or more of ground loads, construction loads, and crowd loads. The internal structure loads include at least one or more of decoration loads, partition wall loads, equipment loads, and ceiling loads.

[0018] Preferably, the steps of establishing transfer rules for various loads and internal forces between each calculation unit on the overall calculation model in Step S4 include:

[0019] The internal forces of each computing unit are sorted out and uniquely quantified and encoded so that each computing unit obtains a corresponding unique quantified expression code; the unique quantified expression code is used to express each computing unit respectively, so that each computing unit has the characteristics of unique identification.

[0020] Preferably, the step of uniquely quantifying and encoding the internal forces of each computing unit includes:

[0021] Use formula 1 to uniquely quantify and encode the internal forces of any beam:

[0022] L i {[(N i ,V i ,M i )],[(x i1 ,y i1 ,z i1 ),(x i2 ,y i2 ,z i2 ),(x i3 ,y i3 ,z i3 )…(x in ,y in ,z in )]} Formula 1

[0023] In the formula, Li represents any selected beam; i represents the i-th beam, N i represents the axial force of a certain section of the beam, V i represents the shear force of a certain section of the beam, M i represents the bending moment of a certain section of the beam, (x i1 ,y i1 ,z i1 ),(x i2 ,y i2 ,z i2 ),(x i3 ,y i3 ,z i3 )…(x in ,y in ,z in ) represents several sections in the space of the beam; or,

[0024] Use formula 2 to uniquely quantify and encode the internal forces of any structural column: Z i {[(Q i ,R i ,S i )],[(a i1 ,b i1 ,c i1 ),(a i2 ,bi2 ,c i2 ),(a i3 ,b i3 ,c i3 )…(a in ,b in ,c in )]} Formula 2

[0025] In the formula, Z i represents the selection of any one of these structural columns, i represents the i-th structural column, Q i represents the axial force of a certain cross-section of the structural column, R i represents the shear force of a certain cross-section of the structural column, S i represents the bending moment of a certain cross-section of the structural column, (a i1 ,b i1 ,c i1 ),(a i2 ,b i2 ,c i2 ),(a i3 ,b i3 ,c i3 )…(a in ,b in ,c in ) represents a number of cross-sections in the space of the structural column;

[0026] Or,

[0027] The way to uniquely quantify and code the internal forces of any wall panel is as follows:

[0028] By selecting each linear meter of two-dimensional frame elements for calculation and analysis, the uniquely quantified coding of the internal forces of the wall panel is converted into the uniquely quantified coding form of the internal forces of the beam for expression.

[0029] Preferably, the processing of the uniquely quantified coding follows the principle of the knowledge graph of the spatial relationship of each calculation unit of the underground structure.

[0030] Preferably, the way to perform component spatial association in step S5 includes at least one or more of slab-beam association, beam-column association, and slab-wall association.

[0031] Preferably, the step of calculating the reinforcement of the component in step S6 further includes:

[0032] Reading the internal forces of each calculation unit in the overall calculation model to complete the reinforcement design.

[0033] Preferably, the reinforcement includes at least one or more of structural wall panel reinforcement, beam reinforcement, and column reinforcement.

[0034] The present invention has the following advantages and beneficial effects compared with the prior art:

[0035] The present invention is applicable to the integrated calculation and reinforcement of various types of underground structures, such as the intermediate ventilation shaft structure of a tunnel, the underground station structure of a subway, and various types of single-story or multi-story basement structures; it can intuitively and efficiently improve the calculation efficiency of underground structures, and different components can be calculated on one model without the need to rely on multiple other program software. Brief Description of the Drawings

[0036] Figure 1 It is a flowchart of the execution of the calculation method of the present invention. Detailed Embodiments

[0037] Next, in combination with the drawings and specific embodiments, the present invention will be further described:

[0038] To make the purpose, technical solutions and advantages of the present invention clearer and more definite, the following takes examples with reference to the drawings to further illustrate the present invention.

[0039] Embodiment 1:

[0040] As Figure 1 shown, an integrated calculation method for underground structures based on a three-dimensional information model includes the following steps:

[0041] Step S1, establish a three-dimensional information model of the underground structure according to the composition of multiple components in the underground structure; since the three-dimensional information model of the underground structure is composed of multiple components with their own attributes such as beams, plates, columns, and holes, it is necessary to perform an initial analysis on this model; multiple components generally include plates, beams, columns, walls, holes, etc.

[0042] Step S2, perform an initial analysis on the established three-dimensional information model of the underground structure to construct an overall calculation model; this step specifically includes:

[0043] Step S21, classify and identify multiple components in the three-dimensional information model of the underground structure;

[0044] Step S22, correspondingly transform the multiple components after classification and identification and divide them into multiple computable units;

[0045] Step S23, divide the multiple computable units into four types of core units, and the overall calculation model is composed of the four types of core units. These four types of core units are wall units, plate units, beam units, and column units respectively. The wall unit includes at least one or more of the outer wall unit and the inner wall unit, and the plate unit includes at least one or more of the top plate unit, the bottom plate unit, and the intermediate layer plate unit.

[0046] Step S3: Define, classify, and sort out the loads on the underground structure, and add them to the overall calculation model. The underground structure loads in this step include soil and water loads, surcharges, self-weight loads, various internal structure loads, and live loads, etc. The live loads include one or more of ground loads, construction loads, and crowd loads, etc. The internal structure loads include one or more of decoration loads, partition wall loads, equipment loads, and ceiling loads, etc. Specifically, it is shown in the following Table 1, the relationship table between the underground structure loads and each unit on the overall calculation model.

[0047] Table 1 Relationship Table between the Underground Structure Loads and Each Unit on the Overall Calculation Model

[0048]

[0049]

[0050] Step S4: Establish the transfer rules of various loads and internal forces between each calculation unit on the overall calculation model. The steps of establishing the transfer rules of various loads and internal forces between each calculation unit on the overall calculation model in this step specifically include: sort out the internal forces of each calculation unit and perform unique quantization coding so that each calculation unit has a unique quantization expression code; secondly, use the unique quantization expression code to express each calculation unit separately in the computer so that each calculation unit has the characteristics of unique identification. After each calculation unit has a unique quantization expression code, each component representative has its own unique identity, and each calculation unit in space can be expressed by the quantization expression code in the computer, and each calculation unit can be uniquely identified. Therefore, before the integrated calculation of the underground structure, the internal force transfer of each calculation unit split from the overall model establishment is transformed into the mutual relationship between the component quantization codes, and retrieving a certain quantization code in the system means retrieving the internal force of a certain component.

[0051] Combined with Table 1 above, the implementation method of performing unique quantization coding on the internal forces of each calculation unit is as follows:

[0052] Use Formula 1 to perform unique quantization coding on the internal forces of any beam:

[0053] L i {[(N i ,V i ,M i )],[(x i1 ,y i1 ,z i1 ),(x i2 ,y i2 ,z i2 ),(x i3 ,y i3 ,zi3 )(…(x in , y in , z in )} Formula 1

[0054] In the formula, Li represents any selected beam; i represents the i-th beam, N i represents the axial force of a certain cross-section of the beam, V i represents the shear force of a certain cross-section of the beam, M i represents the bending moment of a certain cross-section of the beam, (x i1 , y i1 , z i1 ), (x i2 , y i2 , z i2 ), (x i3 , y i3 , z i3 )(…(x in , y in , z in ) represents several cross-sections in the space of the beam;

[0055] The internal force of any structural column is uniquely quantified and coded using Formula 2: Z i {[(Q i , R i , S i )], [(a i1 , b i1 , c i1 ), (a i2 , b i2 , c i2 ), (a i3 , b i3 , c i3 )(…(a in , b in , c in )]} Formula 2

[0056] In the formula, Z i represents any selected structural column, i represents the i-th structural column, Q i represents the axial force of a certain cross-section of the structural column, R i represents the shear force of a certain cross-section of the structural column, S i represents the bending moment of a certain cross-section of the structural column, (a i1 , b i1 , c i1 ), (a i2 , b i2 , c i2 ), (a i3 , b i3 , c i3 )(…(ain , b in , c in ) represent several cross-sections of the space of the structural column;

[0057] The way to uniquely quantify and code the internal force of any wall panel is as follows: By selecting two-dimensional frame elements per meter for calculation and analysis, the uniquely quantified code of the internal force of the wall panel is converted into the form of the uniquely quantified code of the internal force of the beam for expression. And the processing of the uniquely quantified code follows the principle of the knowledge graph of the spatial relationship of each calculation unit of the underground structure.

[0058] Step S5: Retrieve the knowledge graph of the spatial relationship between each calculation unit, and conduct component spatial association on the uniquely quantified codes of various loads and internal forces between each calculation unit to perform the integrated calculation of the underground structure; The ways of conducting component spatial association in this step include one or more of slab-beam association, beam-column association, slab-wall association, etc., and the specific information can refer to the knowledge graph information table for constructing the spatial relationship of each unit of the structure in Table 2.

[0059] Table 2 Knowledge graph information table for constructing the spatial relationship of each unit of the structure

[0060]

[0061] Step S6: Complete the reinforcement calculation of each component; The ways of reinforcement calculation in this step also include: reading the internal forces of each calculation unit in the overall calculation model to complete the reinforcement design; The reinforcement design is a reinforcement calculation that can be edited and modified, and the reinforcement includes one or more of structural wall panel reinforcement, beam reinforcement, column reinforcement, etc.

[0062] The integrated calculation of the calculation method of the present invention is based on the following principle from the perspective of computer operation: Conduct the initialization analysis of the three-dimensional structure information model, classify and identify all components of the structural three-dimensional space information model, and after identifying the components, transform and divide them into computable units; Define the loads of the underground structure and pre-apply them to the overall calculation model, establish the transfer rules of various loads and internal forces between each calculation unit on the overall calculation model, and complete the integrated calculation and reinforcement of the underground structure. Its advantages are intuitive and high design calculation efficiency; Different components can be calculated on one model, and there is no need to rely on multiple other program software to achieve.

Claims

1. An integrated calculation method for underground structures based on a three-dimensional information model, characterized in that, It includes the following steps: Step S1: Establish a three-dimensional information model of the underground structure according to the composition of multiple components in the underground structure, where the multiple components at least include slabs, beams, columns, and walls; Step S2: Perform an initial analysis on the established three-dimensional information model of the underground structure to construct an overall calculation model; The specific steps of step S2 include: Step S21: Classify and identify multiple components in the three-dimensional information model of the underground structure; Step S22: Correspondingly transform and divide the classified and identified multiple components into multiple calculation units; Step S23: Divide the multiple calculation units into four types of core units, and form an overall calculation model with the four types of core units; Step S3: Define, classify, and sort out the loads of the underground structure, and add them to the overall calculation model; Step S4: Establish transfer rules for various loads and internal forces between each calculation unit on the overall calculation model; Step S5: Retrieve the knowledge graph of the spatial relationship between each calculation unit, perform component spatial association on the unique quantitative encoding of various loads and internal forces between each calculation unit, and perform integrated calculation of the underground structure; Step S6: Complete the reinforcement calculation of each component.

2. The integrated calculation method of the underground structure based on the three-dimensional information model according to claim 1, characterized in that The four types of core units in step S23 are wall units, slab units, beam units, and column units respectively. The wall units at least include one or more of the outer wall surface units and the inner wall surface units. The slab units at least include one or more of the top slab units, bottom slab units, and intermediate layer slab units.

3. The integrated calculation method for underground structures based on a three-dimensional information model according to claim 1, wherein The underground structure loads in step S3 at least include soil and water loads, surcharges, self-weight loads, various internal structure loads, and live loads; the live loads at least include one or more of ground loads, construction loads, and crowd loads, and the internal structure loads at least include one or more of decoration loads, partition wall loads, equipment loads, and ceiling loads.

4. A method for integrated calculation of underground structures based on a three-dimensional information model according to claim 1, characterized in that, The steps of establishing transfer rules for various loads and internal forces between each calculation unit on the overall calculation model in step S4 include: Sort out the internal forces of each calculation unit and perform unique quantitative encoding so that each calculation unit obtains a corresponding unique quantitative expression code; use the unique quantitative expression code to express each calculation unit respectively so that each calculation unit has the characteristics of unique identification.

5. A method for integrated calculation of underground structures based on a three-dimensional information model according to claim 4, characterized in that The steps of performing unique quantitative encoding on the internal forces of each calculation unit include: Use formula 1 to perform unique quantitative encoding on the internal forces of any beam; L i {[(N i ,V i ,M i )],[(x i1 ,y i1 ,z i1 ),(x i2 ,y i2 ,z i2 ),(x i3 ,y i3 ,z i3 )…(x in ,y in ,z in )]} Formula 1 In the formula, Li represents any selected beam; i represents the i-th beam, N i represents the axial force of a certain cross-section of this beam, V i represents the shear force of a certain cross-section of this beam, M i represents the bending moment of a certain cross-section of this beam, (x i1 , y i1 , z i1 ), (x i2 , y i2 , z i2 ), (x i3 , y i3 , z i3 )…(x in , y in , z in ) represent several cross-sections in the space of this beam; or, Use formula 2 to perform unique quantitative encoding on the internal forces of any structural column; Z i {[(Q i , R i , S i )], [(a i1 , b i1 , c i1 ), (a i2 , b i2 , c i2 ), (a i3 , b i3 , c i3 )…(a in , b in , c in )]} Formula 2 In the formula, Z i represents any one of the selected structural columns, i represents the i-th structural column, and Q i represents the axial force of a certain cross-section of the structural column, R i represents the shear force of a certain cross-section of the structural column, S i represents the bending moment of a certain cross-section of the structural column, (a i1 , b i1 , c i1 ), (a i2 , b i2 , c i2 ), (a i3 , b i3 , c i3 )…(a in , b in , c in ) represent several cross-sections in the space of the structural column; Or, The method of performing unique quantitative encoding on the internal forces of any wall panel is: By selecting each linear meter of two-dimensional frame unit for calculation and analysis, convert the unique quantitative encoding of the internal forces of the wall panel into the form of the unique quantitative encoding of the internal forces of the beam for expression.

6. A method for integrated calculation of underground structures based on a three-dimensional information model according to claim 4, characterized in that The processing of the unique quantitative encoding follows the principle of the knowledge graph of the spatial relationship of each calculation unit of the underground structure.

7. A method for integrated calculation of underground structures based on a three-dimensional information model according to claim 1, characterized in that The methods of performing component spatial association in step S5 at least include one or more of slab-beam association, beam-column association, and slab-wall association.

8. The integrated calculation method for underground structures based on a three-dimensional information model according to claim 1, characterized in that The steps of completing the reinforcement calculation of components in step S6 further include: Read the internal forces of each computing unit in the overall computing model to complete the reinforcement design.

9. The integrated calculation method of underground structure based on three-dimensional information model according to claim 8, characterized in that, The reinforcement at least includes one or more of the structural wallboard reinforcement, beam reinforcement, and column reinforcement.

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