Forward design method and device for steel plate composite beam based on BIM (Building Information Modeling)

Abstract

The invention discloses a BIM-based steel plate composite beam forward design method and device, and relates to the technical field of bridge engineering.The method comprises the steps that parameterization design is conducted on the structure of a steel plate composite beam, and parameterization data of the steel plate composite beam are obtained; constructing a route model according to the geological survey data and the oblique photography data; building a BIM model of the steel plate composite beam according to the parameterized data of the steel plate composite beam, the route model and the three-dimensional model of each component of the steel plate composite beam; and carrying out stress analysis and three-dimensional verification on the BIM model of the steel plate composite beam to obtain design data of the steel plate composite beam. According to the method, the BIM model of the steel plate composite beam is constructed according to the parameterized data, the route model and the three-dimensional model of each component of the steel plate composite beam, so that the efficiency and precision of designing the structure of the steel plate composite beam can be effectively improved, the probability of reworking, waste and construction accidents in the construction process is reduced, and remarkable economic benefits are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to a forward design method and device for steel plate composite beams based on BIM. Background Art

[0002] BIM technology is the main technical approach to realize the informatization and digitization of bridge engineering. The forward design method based on BIM (Building Information Modeling) is guided by system engineering theory and uses BIM technology for model construction and design optimization. It is an important development direction of bridge design methods.

[0003] At present, in the field of bridge engineering, domestic and foreign scholars and engineering technicians have tried to apply BIM forward design methods to the design stage of different bridge types. These methods make full use of the advantages of BIM technology and realize the integration and sharing of design information through means such as three-dimensional modeling and parametric design.

[0004] However, for steel plate composite beam structures, due to the diversity of their structural forms and combination forms, the complexity of plate detail construction and the high precision required for construction, the existing BIM forward design method is difficult to fully meet their design needs. Summary of the invention

[0005] The present application provides a BIM-based forward design method and device for steel plate composite beams, which can meet the design requirements of steel plate composite beam structures.

[0006] In a first aspect, an embodiment of the present application provides a forward design method for steel plate composite beams based on BIM, the method comprising:

[0007] Perform parametric design on the structure of the steel plate composite beam and obtain parametric data of the steel plate composite beam;

[0008] Construct route models based on geological survey data and oblique photography data;

[0009] Constructing a BIM model of the steel plate composite beam according to the parametric data of the steel plate composite beam, the route model and the three-dimensional models of each component of the steel plate composite beam;

[0010] The stress analysis and three-dimensional verification are performed on the BIM model of the steel plate composite beam to obtain the design data of the steel plate composite beam.

[0011] In combination with the first aspect, in one implementation, the parameterized design of the structure of the steel plate composite beam includes:

[0012] The parametric design includes span arrangement, segment scheme design, cross-section design, longitudinal design, transverse connection design and bridge deck design;

[0013] The hole span arrangement includes: setting the expansion joint width and the skew angle of each span steel plate composite beam, and determining the direction of the branch span line and the boundary of each span steel plate composite beam;

[0014] The segment scheme design includes: dividing the construction segments of the steel plate composite beam, setting the length, connection scheme and splicing plate type of each construction segment;

[0015] The cross-section design includes: setting cross-section parameters of the steel plate composite beam;

[0016] The longitudinal design includes: setting parameters and components of each I-beam and web stiffening rib;

[0017] The transverse connection design includes: setting the cross-sectional components, positions and heights of each cross beam and cross brace, as well as the joint plate components, vertical splicing plate components and bottom splicing plate components connecting the cross beam and cross brace;

[0018] The bridge deck design includes: setting parameters of the prefabricated bridge deck.

[0019] In combination with the first aspect, in one implementation, setting the cross-sectional parameters of the steel plate composite beam includes:

[0020] Set the positioning parameters and detail dimensions of the steel plate composite beam;

[0021] The positioning parameters include the width of the beam top, the length of the concrete left cantilever, the longitudinal beam spacing, the offset from the bridge deck center to the road design line, the bridge cross slope, the bridge deck thickness and the cushion thickness;

[0022] The detailed dimensions include the nominal beam height, the alignment of the upper and lower flange plates of the steel plate beam, the standard thickness of the web of the steel plate beam, and the standard width and thickness of the upper and lower flange plates.

[0023] In combination with the first aspect, in one embodiment, the parameters and components of each I-beam and web stiffening rib are set, including:

[0024] The web stiffening ribs include vertical stiffening ribs and longitudinal stiffening ribs;

[0025] Set the upper and lower flange plates and web plates of each I-beam, the pile number information of the thickening transition section, the plate size of the thickening transition section, and the slope of the thickening transition section;

[0026] Set the position and cross-section components of each vertical stiffener and longitudinal stiffener.

[0027] In combination with the first aspect, in one implementation, the setting of parameters of the prefabricated bridge deck includes:

[0028] Set the design parameters of the shear stud group;

[0029] Based on the design parameters, the positions of the hanging holes and shear nails of the precast bridge deck are set, and the widths and positions of the transverse wet joints and the longitudinal wet joints are determined.

[0030] In combination with the first aspect, in one implementation, constructing a route model based on geological survey data and oblique photography data includes:

[0031] Construct terrain and geomorphic models based on geological survey data and oblique photography data;

[0032] A route model is constructed according to the topographic model and a preset safety factor, wherein the route model includes mileage pile numbers, positioning information, route plane, longitudinal section and cross section.

[0033] In combination with the first aspect, in one embodiment, constructing a BIM model of the steel plate composite beam according to the parameterized data of the steel plate composite beam, the route model and the three-dimensional models of each component of the steel plate composite beam includes:

[0034] Calculating a relative reference line according to the parametric data of the steel plate composite beam;

[0035] According to the route model, the coordinates of each component of the steel plate composite beam at the route pile number and the design elevation are calculated;

[0036] According to the relative reference line, the coordinates of the components of the steel plate composite beam at the route pile number and the design elevation, the three-dimensional models of the components of the steel plate composite beam are located and assembled to obtain the BIM model of the steel plate composite beam.

[0037] In combination with the first aspect, in one implementation, after performing a force analysis on the BIM model of the steel plate composite beam, the method further includes:

[0038] If the BIM model of the steel plate composite beam does not meet the safety standards, the parameterized data of the steel plate composite beam is adjusted, the BIM model of the steel plate composite beam is constructed according to the adjusted parameterized data of the steel plate composite beam, and the force analysis of the newly constructed BIM model of the steel plate composite beam is re-performed.

[0039] In combination with the first aspect, in one implementation, after obtaining the design data of the steel plate composite beam, the method further includes:

[0040] Inputting the design data of the steel plate composite beam into a preset drawing algorithm to obtain a construction drawing; the construction drawing includes an elevation drawing, a plan drawing and a cross-section drawing;

[0041] Each component object in the design data of the steel plate composite beam is numbered and named to generate a bill of quantities.

[0042] In a second aspect, an embodiment of the present application provides a forward design device for steel plate composite beams based on BIM, the device comprising:

[0043] A design module is used to perform parametric design on the structure of the steel plate composite beam and obtain parametric data of the steel plate composite beam;

[0044] A construction module is used to construct a route model based on geological survey data and oblique photography data; and is also used to construct a BIM model of the steel plate composite beam based on the parametric data of the steel plate composite beam, the route model and the three-dimensional model of each component of the steel plate composite beam;

[0045] The review module is used to perform stress analysis and three-dimensional review on the BIM model of the steel plate composite beam to obtain the design data of the steel plate composite beam.

[0046] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0047] This method can quickly generate data of steel plate composite beams of various sizes and specifications by parametrically designing the structure of steel plate composite beams, avoiding the tedious calculation and drawing work in the traditional manual design method, and significantly improving the design efficiency. The BIM model of the steel plate composite beam is constructed based on the parametric data, route model and three-dimensional models of each component of the steel plate composite beam, which can effectively improve the efficiency and accuracy of the design of the steel plate composite beam structure, reduce the probability of rework, waste and construction accidents during the construction process, and has significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a flow chart of the first embodiment of the forward design method of steel plate composite beams based on BIM in this application;

[0049] Figure 2 This is a flow chart of a second embodiment of a forward design method for steel plate composite beams based on BIM in this application;

[0050] Figure 3 A schematic diagram of a road design line of a second embodiment of a forward design method for steel plate composite beams based on BIM in this application;

[0051] Figure 4 This is a BIM model diagram of the steel plate composite beam in the embodiment of the present application;

[0052] Figure 5 A three-dimensional component model diagram of a steel plate composite beam according to an embodiment of the present application;

[0053] Figure 6 It is a structural schematic diagram of a forward design device for steel plate composite beams based on BIM in an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0056] First, please refer to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the forward design method for steel plate composite beams based on BIM in this application. The forward design method for steel plate composite beams based on BIM provided in this embodiment includes the following steps:

[0057] Step S1: performing parametric design on the structure of the steel plate composite beam to obtain parametric data of the steel plate composite beam.

[0058] Step S2: constructing a route model based on geological survey data and oblique photography data.

[0059] Step S3: constructing a BIM model of the steel plate composite beam according to the parameterized data of the steel plate composite beam, the route model and the three-dimensional models of the components of the steel plate composite beam.

[0060] Step S4: Perform stress analysis and three-dimensional verification on the BIM model of the steel plate composite beam to obtain design data of the steel plate composite beam.

[0061] This method can quickly generate data of steel plate composite beams of various sizes and specifications by parametrically designing the structure of steel plate composite beams, avoiding the tedious calculation and drawing work in the traditional manual design method, and significantly improving the design efficiency. The BIM model of the steel plate composite beam is constructed based on the parametric data, route model and three-dimensional models of each component of the steel plate composite beam, which can effectively improve the efficiency and accuracy of the design of the steel plate composite beam structure, reduce the probability of rework, waste and construction accidents during the construction process, and has significant economic benefits.

[0062] In some embodiments, before the above step S1, the method further includes the following steps:

[0063] First, the characteristics of the structural objects of steel plate composite beams are analyzed, and the results of the analysis are classified. Specifically, the bridge components are subdivided into components and primitives, and the components and primitives are parameterized to compile the geometric construction dimension parameter table and material parameter table; the bridge layout objects are parameterized to obtain the steel plate beam design parameter table.

[0064] Afterwards, the material database is obtained based on the material parameterization table, and the material database includes a steel database and a concrete database. In the steel database, the steel data includes steel model, yield strength, elastic modulus, shear modulus, temperature linear expansion coefficient and Poisson's ratio; in the concrete database, the concrete data includes concrete strength grade, compressive ultimate strength, allowable stress, elastic modulus, shear deformation modulus, temperature expansion coefficient and Poisson's ratio.

[0065] Finally, the component library, assembly library and standard part library are constructed based on the geometric construction dimension parameter table, material parameter table, steel plate beam design parameter table and material database. The parameters in the component library, assembly library and standard part library include basic attributes, geometric attributes and design attributes. The basic attributes include the number, name and location classification of the object, the geometric attributes include the geometric parameters of the object, and the design attributes include the material type.

[0066] In some embodiments, in the above step S1, the structure of the steel plate composite beam is parametrically designed, including:

[0067] The structure of the steel plate composite beam is designed in terms of hole span arrangement, segment scheme design, cross-section design, longitudinal design, transverse connection design and bridge deck.

[0068] The hole span arrangement includes: setting the expansion joint width and oblique angle of each span steel plate composite beam, and determining the direction of the branch span line and the boundary of each span steel plate composite beam.

[0069] The segment scheme design includes: dividing the construction segments of the steel plate composite beam, setting the length of each construction segment, connection scheme and splicing plate type.

[0070] The cross-section design includes: setting the cross-section parameters of the steel plate composite beam.

[0071] The design along the bridge direction includes: setting the parameters and components of each I-beam and web stiffener.

[0072] The transverse connection design includes: setting the cross-sectional components, position and height of each cross beam and cross brace, as well as the joint plate components, vertical splicing plate components and bottom splicing plate components connecting the cross beams and cross braces.

[0073] The bridge deck design includes: setting the parameters of the prefabricated bridge deck.

[0074] In some embodiments, the above-mentioned setting of the cross-sectional parameters of the steel plate composite beam comprises the following steps:

[0075] Set the positioning parameters and detail dimensions of the steel plate composite beam. The positioning parameters include beam top width, concrete left cantilever length, longitudinal beam spacing, offset from the bridge deck center to the road design line, bridge cross slope, bridge deck thickness and cushion thickness; the detail dimensions include nominal beam height, alignment of the upper and lower flange plates of the steel plate beam, standard thickness of the steel plate beam web, and standard width and thickness of the upper and lower flange plates.

[0076] In some embodiments, the above-mentioned setting of parameters and components of each I-beam and web stiffening rib includes the following steps, wherein the web stiffening rib includes vertical stiffening ribs and longitudinal stiffening ribs:

[0077] First, set the upper and lower flange plates and webs of each I-beam, the pile number information of the thickening transition section, the plate size of the thickening transition section and the slope of the thickening transition section, and then set the position and cross-sectional components of each vertical stiffening rib and longitudinal stiffening rib.

[0078] In some embodiments, the above-mentioned setting of parameters of the prefabricated bridge deck comprises the following steps:

[0079] The design parameters of the shear nail group are set. Based on the design parameters, the positions of the hanging holes and shear nails of the precast bridge deck are set, and the width and position of the transverse wet joints and longitudinal wet joints are determined.

[0080] In some embodiments, in the above step S2, constructing a route model according to the geological survey data and the oblique photography data includes the following steps:

[0081] S21: Construct a topographic model based on geological survey data and oblique photography data.

[0082] S22: Construct a route model according to the topographic model and the preset safety factor, the route model including mileage pile numbers, positioning information, route plane, longitudinal section and cross section.

[0083] In some embodiments, in the above step S3, constructing a BIM model of the steel plate composite beam according to the parameterized data of the steel plate composite beam, the route model and the three-dimensional models of each component of the steel plate composite beam includes the following steps:

[0084] S31: Calculate the relative reference line based on the parametric data of the steel plate composite beam.

[0085] S32: According to the route model, the coordinates of each component of the steel plate composite beam at the route pile number and the design elevation are calculated.

[0086] S33: According to the relative reference line, the coordinates of each component of the steel plate composite beam at the route pile number and the design elevation, the three-dimensional models of each component of the steel plate composite beam are located and assembled to obtain the BIM model of the steel plate composite beam.

[0087] In some embodiments, in the above step S4, after the force analysis is performed on the BIM model of the steel plate composite beam, the following steps are further included:

[0088] If the BIM model of the steel plate composite beam does not meet the safety standards, adjust the parametric data of the steel plate composite beam, construct the BIM model of the steel plate composite beam according to the adjusted parametric data of the steel plate composite beam, and re-analyze the stress of the newly constructed BIM model of the steel plate composite beam.

[0089] In some embodiments, after the above step S4 is completed, the following steps are further included:

[0090] The design data of the steel plate composite beam is input into the preset drawing algorithm to obtain the construction drawings, which include elevation drawings, plan drawings and cross-section drawings. Subsequently, each component object in the design data of the steel plate composite beam is numbered and named to generate a bill of quantities.

[0091] In a more specific embodiment, please refer to Figure 2 , a flow chart of the second embodiment of the forward design method of steel plate composite beam based on BIM in this application, this embodiment is the SJ3 section of the Guanghui Expressway reconstruction and expansion project, the total length of the route is 42.918km, wherein a 60m span steel plate composite beam bridge is built at ZK1979+955, and the bridge width is 24.5m. The forward design method of steel plate composite beam based on BIM provided in this embodiment includes the following steps:

[0092] Step A01: Analyze the characteristics of the structural object of the steel plate composite beam to obtain a geometric construction dimension parameter table, a material parameter table and a steel plate beam design parameter table.

[0093] Specifically, the bridge components are subdivided into components and primitives, the components and primitives are parameterized, and the geometric structure dimension parameter table and material parameter table are compiled; the bridge layout objects are parameterized to obtain the steel plate girder design parameter table.

[0094] Step A02: Obtain a material database based on the material parameterization table.

[0095] Specifically, the material database includes a steel database and a concrete database. In the steel database, the steel data includes steel model, yield strength, elastic modulus, shear modulus, temperature linear expansion coefficient and Poisson's ratio; in the concrete database, the concrete data includes concrete strength grade, compressive ultimate strength, allowable stress, elastic modulus, shear deformation modulus, temperature expansion coefficient and Poisson's ratio.

[0096] Step A03: Based on the geometric structure dimension parameter table, material parameter table and steel plate beam design parameter table, a steel plate beam family library is constructed. The steel plate beam family library includes a component library, a subassembly library and a standard part library.

[0097] Specifically, the parameters in the component library, assembly library and standard library include basic attributes, geometric attributes and design attributes. The basic attributes include the number, name and location classification of the object, the geometric attributes include the geometric parameters of the object, and the design attributes include the material type.

[0098] Step A04: Establish a topographic model based on geological survey and oblique photography data, determine the route plan based on comprehensive environmental and safety factors, and construct a route model.

[0099] Specifically, the route model includes mileage pile numbers, positioning information, route plane, longitudinal section and cross section.

[0100] Step A05: According to the route model, input the starting pile number, span type and span combination of the bridge, determine the steel plate beam positioning information, and complete the overall layout of the steel plate composite beam.

[0101] For details, please refer to Figure 3 , Figure 3 This is a schematic diagram of the road design line of the second embodiment of the forward design method of steel plate composite beam based on BIM in this application. Figure 3 In the calculation, the span refers to the distance between the supporting points at both ends of the structure, the road design line is used to determine the overall shape and position of the bridge, the hole layout line refers to the line of holes drilled to install or fix the structure during bridge construction, and the angle between the hole layout line and the normal is the oblique angle. This step obtains the spatial line of the three-dimensional road design line, and then calculates the cross-sectional properties of the route at the span line according to the positioning information of the bridge. The cross-sectional properties include the spatial point of the route where the pile number of the cross section is located, the unit vector in the right direction, and the characteristic element.

[0102] Step A06: Perform parametric design on the structure of the steel plate composite beam to obtain parametric data of the steel plate composite beam.

[0103] Step A07: Construct a BIM model of the steel plate composite beam according to the parametric data of the steel plate composite beam, the route model and the three-dimensional models of the components of the steel plate composite beam.

[0104] For more details, please refer to the BIM model of steel plate composite beam. Figure 4 , Figure 4 This is a BIM model diagram of the steel plate composite beam according to an embodiment of the present application.

[0105] Step A08: Perform stress analysis and three-dimensional verification on the BIM model of the steel plate composite beam to obtain design data of the steel plate composite beam.

[0106] Specifically, Midas was used to perform stress analysis on the BIM model of the steel plate composite beam.

[0107] Step A09: Input the design data of the steel plate composite beam into a preset drawing algorithm to obtain a construction drawing, then number and name each component object in the design data of the steel plate composite beam to generate a bill of quantities.

[0108] In some embodiments, in the above step A03, building a component library based on the geometric structure dimension parameter table, the material parameter table and the steel plate beam design parameter table includes the following steps:

[0109] A031: The component types are divided into I-beams, vertical stiffening of I-beam webs (with chamfers), vertical stiffening of I-beam webs (at cross braces), vertical stiffening of I-beam webs (widened), I-beam support stiffening ribs, cross beams, cross braces, shear studs, spliced ​​plates and joint plates.

[0110] A032: The positioning classification of components is divided into cross-section, web stiffening, brace stiffening, beam stiffening, support stiffening, support pad, joint plate, connection scheme and shear studs.

[0111] A033: Set the material source of the component to the material database in step A02.

[0112] A034: The component is 3D modeled using a preset 3D geometric construction algorithm to obtain a 3D component model in the local coordinate system.

[0113] For details, please refer to Figure 5 , Figure 5 This is a three-dimensional component model diagram of the steel plate composite beam according to an embodiment of the present application.

[0114] In some embodiments, in the above step A03, building a component library based on the geometric structure dimension parameter table, the material parameter table and the steel plate beam design parameter table includes the following steps:

[0115] Firstly, the component types are divided into cross braces and vertical stiffeners, cross beams and vertical stiffeners A, cross beams and vertical stiffeners, and support stiffeners. Then, the components in the component library are called, and the components are three-dimensionally modeled through the preset modeling algorithm to obtain the three-dimensional component model in the local coordinate system.

[0116] In some embodiments, in the above step A03, based on the geometric structure dimension parameter table, the material parameter table and the steel plate beam design parameter table, a standard component library is constructed, including the following steps:

[0117] Firstly, the types of standard parts are divided into bolts and shear studs, and the standard parts are three-dimensionally modeled using a preset modeling algorithm to obtain a three-dimensional standard part model in a local coordinate system.

[0118] In some embodiments, in the above step A06, the structure of the steel plate composite beam is parametrically designed to obtain the parametric data of the steel plate composite beam, which specifically includes the following steps:

[0119] A061: Hole span arrangement, specifically setting the expansion joint width and skew angle of each span steel plate composite beam, and clarifying the span line direction and boundaries of each span steel plate composite beam.

[0120] A062: Segment scheme design, specifically dividing the construction segments of each span of steel plate beams, setting the length of the construction segments, as well as the connection scheme and splicing plate type of the top plate, bottom plate, and upper / lower part of the web, and locating the distance from the splicing plates of the upper and lower parts of the web to the upper and lower flange plates of the longitudinal beam.

[0121] A063: Cross-sectional design, specifically setting the positioning parameters (beam top width, concrete left cantilever length, longitudinal beam spacing arrangement, offset from the bridge deck center to the road design line, bridge cross slope, and bridge deck thickness and cushion thickness) and detail dimensions (nominal beam height, alignment of upper and lower flange plates of steel plate beam, standard thickness of steel plate beam web, and standard width and thickness of upper and lower flange plates) of steel plate composite beams.

[0122] A064: Design along the bridge direction, specifically defining the pile number, size and transition slope of the flange plate and web of each I-beam where they become wider and thicker, collecting the main beam data; designing the web stiffeners, including vertical and longitudinal stiffeners.

[0123] A065: Design of transverse connection, setting of the cross section, position and height of the cross beam / cross brace, setting of the joint plate components, vertical splicing plate components and bottom splicing plate components connecting the cross beam / cross brace; design of the position, distribution and cross section component type of the cross beam stiffening ribs.

[0124] A066: Bridge deck design. Set the shear nail group parameters, arrange the positions of the precast panel hanging holes and shear nails, and the width and position of the transverse and longitudinal wet joints.

[0125] Second, please refer to Figure 6 , Figure 6 This is a structural schematic diagram of a BIM-based forward design device for steel plate composite beams according to an embodiment of the present application. The BIM-based forward design device for steel plate composite beams provided in this embodiment includes a design module, a construction module and a review module.

[0126] Among them, the design module is used to perform parametric design on the structure of the steel plate composite beam and obtain the parametric data of the steel plate composite beam.

[0127] The construction module is used to construct a route model based on geological survey data and oblique photography data; it is also used to construct a BIM model of the steel plate composite beam based on the parametric data of the steel plate composite beam, the route model and the three-dimensional models of each component of the steel plate composite beam.

[0128] The review module is used to perform stress analysis and three-dimensional review on the BIM model of the steel plate composite beam to obtain the design data of the steel plate composite beam.

[0129] This device uses the design module to perform parametric design on the structure of steel plate composite beams, and can quickly generate data of steel plate composite beams of various sizes and specifications, avoiding the tedious calculation and drawing work in the traditional manual design method, and significantly improving the design efficiency. By constructing the BIM model of the steel plate composite beam according to the parametric data, route model and the three-dimensional model of each component of the steel plate composite beam through the construction module, the efficiency and accuracy of the steel plate composite beam structure design can be effectively improved, and the probability of rework, waste and construction accidents during the construction process can be reduced, which has significant economic benefits.

[0130] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0131] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0132] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0133] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0134] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0135] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0136] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A forward design method for steel plate composite beams based on BIM, characterized in that: The method comprises: Perform parametric design on the structure of the steel plate composite beam and obtain parametric data of the steel plate composite beam; Construct route models based on geological survey data and oblique photography data; Constructing a BIM model of the steel plate composite beam according to the parametric data of the steel plate composite beam, the route model and the three-dimensional models of each component of the steel plate composite beam; The stress analysis and three-dimensional verification are performed on the BIM model of the steel plate composite beam to obtain the design data of the steel plate composite beam.

2. The forward design method of steel plate composite beam based on BIM according to claim 1, characterized in that: The parametric design of the steel plate composite beam structure includes: The parametric design includes span arrangement, segment scheme design, cross-section design, longitudinal design, transverse connection design and bridge deck design; The hole span arrangement includes: setting the expansion joint width and the skew angle of each span steel plate composite beam, and determining the direction of the branch span line and the boundary of each span steel plate composite beam; The segment scheme design includes: dividing the construction segments of the steel plate composite beam, setting the length, connection scheme and splicing plate type of each construction segment; The cross-section design includes: setting cross-section parameters of the steel plate composite beam; The longitudinal design includes: setting parameters and components of each I-beam and web stiffening rib; The transverse connection design includes: setting the cross-sectional components, positions and heights of each cross beam and cross brace, as well as the joint plate components, vertical splicing plate components and bottom splicing plate components connecting the cross beam and cross brace; The bridge deck design includes: setting parameters of the prefabricated bridge deck.

3. The forward design method of steel plate composite beam based on BIM as claimed in claim 2, characterized in that: The step of setting the cross-sectional parameters of the steel plate composite beam includes: Set the positioning parameters and detail dimensions of the steel plate composite beam; The positioning parameters include the width of the beam top, the length of the concrete left cantilever, the longitudinal beam spacing, the offset from the bridge deck center to the road design line, the bridge cross slope, the bridge deck thickness and the cushion thickness; The detailed dimensions include the nominal beam height, the alignment of the upper and lower flange plates of the steel plate beam, the standard thickness of the web of the steel plate beam, and the standard width and thickness of the upper and lower flange plates.

4. The forward design method of steel plate composite beam based on BIM according to claim 2, characterized in that: The parameters and components of setting each I-beam and web stiffening rib include: The web stiffening ribs include vertical stiffening ribs and longitudinal stiffening ribs; Set the upper and lower flange plates and web plates of each I-beam, the pile number information of the thickening transition section, the plate size of the thickening transition section, and the slope of the thickening transition section; Set the position and cross-section components of each vertical stiffener and longitudinal stiffener.

5. The forward design method of steel plate composite beam based on BIM according to claim 2, characterized in that: The parameters of the prefabricated bridge deck are set, including: Set the design parameters of the shear stud group; Based on the design parameters, the positions of the hanging holes and shear nails of the precast bridge deck are set, and the widths and positions of the transverse wet joints and the longitudinal wet joints are determined.

6. The forward design method of steel plate composite beam based on BIM according to claim 1, characterized in that: The method of constructing a route model based on geological survey data and oblique photography data includes: Construct terrain and geomorphic models based on geological survey data and oblique photography data; A route model is constructed according to the topographic model and a preset safety factor, wherein the route model includes mileage pile numbers, positioning information, route plane, longitudinal section and cross section.

7. The forward design method of steel plate composite beam based on BIM according to claim 1, characterized in that: The method of constructing a BIM model of the steel plate composite beam according to the parameterized data of the steel plate composite beam, the route model and the three-dimensional models of each component of the steel plate composite beam comprises: Calculating a relative reference line according to the parametric data of the steel plate composite beam; According to the route model, the coordinates of each component of the steel plate composite beam at the route pile number and the design elevation are calculated; According to the relative reference line, the coordinates of the components of the steel plate composite beam at the route pile number and the design elevation, the three-dimensional models of the components of the steel plate composite beam are located and assembled to obtain the BIM model of the steel plate composite beam.

8. The forward design method for steel plate composite beams based on BIM according to claim 1, characterized in that: After the force analysis of the BIM model of the steel plate composite beam is performed, the following steps are also included: If the BIM model of the steel plate composite beam does not meet the safety standards, the parameterized data of the steel plate composite beam is adjusted, the BIM model of the steel plate composite beam is constructed according to the adjusted parameterized data of the steel plate composite beam, and the force analysis of the newly constructed BIM model of the steel plate composite beam is re-performed.

9. The forward design method of steel plate composite beam based on BIM according to claim 1, characterized in that: After obtaining the design data of the steel plate composite beam, the method further includes: Inputting the design data of the steel plate composite beam into a preset drawing algorithm to obtain a construction drawing; the construction drawing includes an elevation drawing, a plan drawing and a cross-section drawing; Each component object in the design data of the steel plate composite beam is numbered and named to generate a bill of quantities.

10. A BIM-based steel plate composite beam forward design device based on the method according to any one of claims 1 to 9, characterized in that: The device comprises: A design module is used to perform parametric design on the structure of the steel plate composite beam and obtain parametric data of the steel plate composite beam; A construction module is used to construct a route model based on geological survey data and oblique photography data; and is also used to construct a BIM model of the steel plate composite beam based on the parametric data of the steel plate composite beam, the route model and the three-dimensional model of each component of the steel plate composite beam; The review module is used to perform stress analysis and three-dimensional review on the BIM model of the steel plate composite beam to obtain the design data of the steel plate composite beam.

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