Integrated calculation method for underground structure based on three-dimensional information model

Abstract

The application discloses an integrated calculation method of underground structure based on a three-dimensional information model, and comprises the following steps: establishing a three-dimensional information model of the underground structure according to the composition of multiple components in the underground structure; performing initialization analysis on the established three-dimensional information model of the underground structure to construct an integrated calculation model; defining, classifying and arranging the load of the underground structure and adding the load to the integrated calculation model; establishing the transmission rules of various loads and internal forces between calculation units on the integrated calculation model; searching the spatial relationship knowledge graph between the calculation units, associating the unique quantitative codes of various loads and internal forces between the calculation units with components, and performing integrated calculation of the underground structure; and completing the reinforcement calculation of the components; and the application effectively improves the calculation efficiency of the underground structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underground structure calculation, in particular to an integrated calculation method of underground structure based on three-dimensional information model. BACKGROUND

[0002] Because the underground structure calculation is greatly affected by the geological conditions, and the main load affecting the structure is also different, the calculation method of the underground structure is essentially different from that of the ground structure. At present, the basic method of underground structure calculation is to separate the beams, slabs, columns and other components of the deep-buried underground structure for calculation. Under normal circumstances, the wallboard calculation of the underground structure is carried out first, the typical transverse unit wallboard frame section of the underground structure is selected, and then the loads acting on each unit frame are calculated manually in combination with the geological environment, and finally the internal force is obtained by two-dimensional calculation using finite element software, and then the reinforcement calculation is carried out for each section. The calculation method of the beam is to separate each beam in the underground structure, calculate the loads acting on the beam manually, carry out two-dimensional calculation using finite element software, obtain the internal force, and then carry out reinforcement calculation. The calculation method of the column is generally to select each type of column separately, calculate the loads acting on the column manually, and then calculate the axial compression ratio and reinforcement of the column by using other software. After the components are separated and calculated by using a series of software, the calculation results are integrated.

[0003] However, the above-mentioned underground structure calculation and reinforcement method often have the problems of being not intuitive, having many errors, being low in design efficiency, and needing to use multiple different program software to realize. In order to further improve the calculation efficiency of the underground structure, the existing calculation method needs to be improved and innovated, that is, by using the continuously developed computer technology combined with the three-dimensional spatial visual information model of the underground structure, the initialization parameterization analysis of each component of the underground structure is carried out, and the fundamental defects of the traditional calculation mode are changed. SUMMARY

[0004] In order to solve the problems of the existing underground structure calculation and reinforcement method, such as being not intuitive, having many errors, being low in design efficiency, and needing to use multiple different program software to realize, the present application provides an integrated calculation method of underground structure based on three-dimensional information model, which can efficiently improve the calculation efficiency without the aid of multiple different program software. In order to achieve the above purpose, the present application is implemented by the following technical scheme:

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

[0006] Step S1, according to the composition of the plurality of components in the underground structure, a three-dimensional information model of the underground structure is established, wherein the plurality of components at least includes a slab, a beam, a column and a wall.

[0007] Step S2, initializing analysis is performed on the established three-dimensional information model of the underground structure, and an overall calculation model is constructed;

[0008] The step S2 specifically comprises:

[0009] Step S21, multiple components in the three-dimensional information model of the underground structure are classified and identified;

[0010] Step S22, the multiple components after classification and identification are correspondingly converted and divided into multiple calculation units;

[0011] Step S23, the multiple calculation units are divided into four types of core units, and the overall calculation model is composed of the four types of core units;

[0012] Step S3, the load of the underground structure is defined, classified, and arranged, and is added to the overall calculation model;

[0013] Step S4, a transfer rule of various loads and internal forces between the calculation units in the overall calculation model is established;

[0014] Step S5, a spatial relationship knowledge graph between the calculation units is searched, a unique quantization code of various loads and internal forces between the calculation units is constructed, and a component spatial correlation is performed, so as to perform integrated calculation of the underground structure;

[0015] Step S6, reinforcement calculation of each component is completed.

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

[0017] Preferably, the underground structure load in the step S3 at least includes water and soil load, overload, self-weight load, various structural internal loads, and live load; the live load at least includes one or more of ground load, construction load, and crowd load, and the structural internal load at least includes one or more of decoration load, partition wall load, equipment load, and suspended ceiling load.

[0018] Preferably, the step of establishing the transfer rule of various loads and internal forces between the calculation units in the overall calculation model in the step S4 comprises:

[0019] The internal force of each calculation unit is sorted and uniquely quantized, so that each calculation unit has a corresponding unique quantization expression code.

[0020] Preferably, the step of uniquely quantizing the internal force of each calculation unit comprises:

[0021] The internal force of any beam is uniquely quantized by using Formula 1:

[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 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 a plurality of cross sections of the beam space; or,

[0024] The internal force of any structural column is uniquely quantized by using Formula 2: 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 selecting any one of the 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 plurality of cross sections of the structural column space.

[0026] Or,

[0027] The unique quantization coding mode of the internal force of any one wallboard is:

[0028] By selecting a two-dimensional frame unit per meter for calculation and analysis, the unique quantization coding of the internal force of the wallboard is converted into the unique quantization coding form of the internal force of the beam to express.

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

[0030] Preferably, the component spatial correlation in the step S5 is performed in at least one or more of the following modes: plate-beam correlation, beam-column correlation, and plate-wall correlation.

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

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

[0033] Preferably, the reinforcement at least includes one or more of the following: structural wallboard reinforcement, beam reinforcement, and column reinforcement.

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

[0035] The present application is applicable to integrated calculation and reinforcement of various types of underground structures, such as tunnel intermediate air shaft structures, subway underground station structures, and various types of single or multi-layer basement structures; it can intuitively and efficiently improve the calculation efficiency of underground structures, and different component calculations can be completed on one model without the aid of different multiple other program software. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The flow chart of the execution of the calculation method of the present application. DETAILED DESCRIPTION

[0037] The present application will be further described below in combination with the drawings and specific embodiments:

[0038] To make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described below with reference to the drawings and embodiments.

[0039] Embodiment 1:

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

[0041] Step S1, a three-dimensional information model of an underground structure is established 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 such as beams, plates, columns, and holes with their own attributes, it is necessary to perform initialization analysis on the model; the multiple components generally include plates, beams, columns, walls, and holes.

[0042] Step S2, the established three-dimensional information model of the underground structure is initialized and analyzed to construct an overall calculation model; this step specifically includes:

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

[0044] Step S22, the multiple components after classification and identification are correspondingly converted and divided into multiple calculable units;

[0045] Step S23, the multiple calculable units are divided into four types of core units, and the overall calculation model is composed of the four types of core units. The four types of core units are wall units, plate units, beam units, and column units, the wall units include at least one or more of outer wall surface units and inner wall surface units, and the plate units include at least one or more of top plate units, bottom plate units, and intermediate layer plate units.

[0046] ​Step S3, define, classify, arrange the load of the underground structure, and add to the overall calculation model; the underground structure load in this step includes water and soil load, overload, dead load, various internal loads of the structure, and live load, etc., and the live load includes one or more of ground load, construction load, and crowd load, etc., and the internal load of the structure includes one or more of decoration load, partition wall load, equipment load, and suspended ceiling load, etc. The specific relationship is shown in the following Table 1.

[0047] Table 1 Relationship table of underground structure load and each unit on the overall calculation model

[0048]

[0049]

[0050] Step S4, establish the transfer rule of various loads and internal forces between each calculation unit on the overall calculation model; the step of establishing the transfer rule of various loads and internal forces between each calculation unit on the overall calculation model in this step specifically includes: arrange the internal force of each calculation unit, and perform unique quantitative coding, so that each calculation unit has a unique quantitative expression code; secondly, use the unique quantitative expression code to express each calculation unit in the computer, so that each calculation unit has a unique identification feature. After each calculation unit has a unique quantitative expression code, each component representation has its own unique identity, and each calculation unit in space can be expressed by a quantitative expression code in the computer, and each calculation unit can be uniquely identified, so that before the integrated calculation of the underground structure, the internal force transfer of each calculation unit of the overall model is changed into the mutual relationship between the quantitative codes of each component, and searching for a quantitative code in the system means searching for the internal force of a component.

[0051] In combination with Table 1 above, the implementation of unique quantitative coding of the internal force of each calculation unit is as follows:

[0052] Use formula 1 to perform unique quantitative coding on the internal force 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] where Li represents the selected arbitrary beam; i represents the ith 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 a number of cross sections of the beam space;

[0055] The internal force of any arbitrary structural column is uniquely quantified by 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] where Z i represents the selected arbitrary structural column, i represents the ith 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 ) represents several cross sections of the structural column space;

[0057] The unique quantization coding mode of the internal force of any one wallboard is that: by selecting two-dimensional frame units per meter for calculation and analysis, the unique quantization coding of the internal force of the wallboard is converted into the unique quantization coding form of the internal force of the beam to express. The unique quantization coding processing follows the principle of the spatial relationship knowledge graph of the underground structure calculation unit.

[0058] Step S5, search the spatial relationship knowledge graph between the calculation units, associate the unique quantization coding of various loads and internal forces between the calculation units with the component space, and perform integrated calculation of the underground structure; the component space association mode in this step includes one or more of plate and beam association, beam and column association, plate and wall association, etc., and the specific can refer to the structure unit spatial relationship construction knowledge graph information table in table 2.

[0059] Table 2 structure unit spatial relationship construction knowledge graph information table

[0060]

[0061] Step S6, complete the reinforcement calculation of each component; the reinforcement calculation mode in this step also includes: reading the internal force 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 structure wallboard reinforcement, beam reinforcement and column reinforcement.

[0062] The integrated calculation of the calculation method of the application is as follows from the perspective of computer operation: initial analysis of the three-dimensional structure information model, classification and identification of all components of the structure three-dimensional space information model, and conversion and division of the identified components into calculable units; define the load of the underground structure and add it to the overall calculation model in advance, establish the load and internal force transmission rules between the calculation units of the overall calculation model, and complete the integrated calculation and reinforcement of the underground structure. The advantages are intuitive and high design and calculation efficiency; different components can be calculated on one model, without the need to use different multiple other program software to achieve.

Claims

1. A method for integrated calculation of underground structures based on a three-dimensional information model, characterized in that, The method comprises the following steps: Step S1, establishing a three-dimensional information model of the underground structure according to the composition of a plurality of components in the underground structure, wherein the plurality of components at least include plates, beams, columns, and walls; Step S2, performing initialization analysis on the established three-dimensional information model of the underground structure to construct an overall calculation model; The step S2 specifically comprises: Step S21, classifying and identifying a plurality of components in the three-dimensional information model of the underground structure; Step S22, converting and dividing the classified and identified plurality of components into a plurality of calculation units; Step S23, dividing the plurality of calculation units into four types of core units, and constructing the overall calculation model from the four types of core units; Step S3, defining, classifying, and arranging the loads of the underground structure, and adding them to the overall calculation model; Step S4, establishing transfer rules of various loads and internal forces between calculation units on the overall calculation model; Step S5, searching a spatial relationship knowledge graph between calculation units, associating unique quantization codes of various loads and internal forces between calculation units, and performing integrated calculation of the underground structure; Step S6, completing reinforcement calculation of each component; The step S4 of establishing transfer rules of various loads and internal forces between calculation units on the overall calculation model comprises: arranging internal forces of each calculation unit and performing unique quantization coding, so that each calculation unit obtains a corresponding unique quantization expression code; and expressing each calculation unit by using the unique quantization expression code, so that each calculation unit has a unique identification feature; The step of uniquely quantizing the internal force of each calculation unit comprises: using formula 1 to uniquely quantize the internal force 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 where L i represents any selected beam; i represents the ith beam, N i represents the ith beam; V i represents the ith beam; M i represents the ith beam; (x i1 ,y i1 ,z i1 ) represents the ith beam; (x i2 ,y i2 ,z i2 ) represents the ith beam; (x i3 ,y i3 ,z i3 ) represents the ith beam; (x in ,y in ,z in ) represents the ith beam; or, using formula 2 to uniquely quantize the internal force 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 )]} Equation 2 wherein Z i represents any one of the structural columns, i represents the ith structural column, Q i represents the axial force of the ith structural column at a certain cross section, R i represents the shear force of the ith structural column at a certain cross section, S i represents the bending moment of the ith structural column at a certain cross section, (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 plurality of cross sections of the ith structural column in space; or, the way of uniquely quantizing the internal force of any wall plate is: by selecting a two-dimensional frame unit per meter for calculation and analysis, the unique quantization code of the internal force of the wall plate is converted into the unique quantization code of the internal force of the beam.

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

3. The integrated calculation method of underground structure based on three-dimensional information model according to claim 1, characterized in that, The underground structure load in step S3 at least includes water and soil load, overload, dead load, various internal structural loads, and live load; the live load at least includes one or more of ground load, construction load, and crowd load; and the internal structural load at least includes one or more of decoration load, partition wall load, equipment load, and suspended ceiling load.

4. The integrated calculation method of underground structure based on three-dimensional information model according to claim 1, characterized in that, The unique quantization code processing follows the principle of the spatial relationship knowledge graph of the calculation units of the underground structure.

5. The integrated calculation method of underground structure based on three-dimensional information model according to claim 1, characterized in that, The component spatial association in step S5 at least includes one or more of plate-beam association, beam-column association, and plate-wall association.

6. The integrated calculation method of underground structure based on three-dimensional information model according to claim 1, characterized in that, The reinforcement calculation step of the component in step S6 further comprises: Read the internal force of each computing unit in the whole computing model, complete the reinforcement design.

7. The integrated calculation method of underground structure based on three-dimensional information model according to claim 6, characterized in that, The reinforcement at least includes one or more of structural wallboard reinforcement, beam reinforcement and column reinforcement.

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