CN108595891A - The two dimensionization BIM design methods of concrete bridge main girder construction falsework structure - Google Patents

The two dimensionization BIM design methods of concrete bridge main girder construction falsework structure Download PDF

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CN108595891A
CN108595891A CN201810447389.2A CN201810447389A CN108595891A CN 108595891 A CN108595891 A CN 108595891A CN 201810447389 A CN201810447389 A CN 201810447389A CN 108595891 A CN108595891 A CN 108595891A
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girder
stay
concrete bridge
place form
bim
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CN108595891B (en
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黄羚
曹建海
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Shijiazhuang Ling Jian Engineering Technology Consulting Co Ltd
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Shijiazhuang Ling Jian Engineering Technology Consulting Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/10Geometric CAD
    • G06F30/13Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/20Design optimisation, verification or simulation

Abstract

The present invention relates to a kind of two dimensionization BIM design methods of concrete bridge main girder construction falsework structure, include the following steps:Establish concrete bridge girder information model;It establishes concrete bridge girder supporting structure and calculates required Load Combination parameter model;Establish the stay in place form object of the composed structure part in the falseworks such as longeron in falsework, shelf bracket, cross bearer, transverse distribution beam, wedge-shaped truss, horizontal-associate, the lumps of wood and template;Establish the assembly informationmodel of each stay in place form;The race of the components such as built-in fitting, node connection, basis, the sandbox of falsework structure is established with Revit softwares, and is preserved with corresponding race's file;Establish the link information of stay in place form and race's file;All information in comprehensive analysis abovementioned steps are automatically generated the Revit three-dimensional BIM models and three-dimensional Midas command streams of falsework structure using software, then are calculated in Midas softwares and inquire required result of calculation.The present invention realizes simplification and the high efficiency of concrete bridge main girder construction falsework structure BIM designs.

Description

The two dimensionization BIM design methods of concrete bridge main girder construction falsework structure
Technical field
The present invention relates to a kind of construction method of concrete bridge girder bridge bracket, specifically a kind of concrete bridge girder The two dimensionization BIM design methods for falsework structure of constructing.
Background technology
BIM(Building Information Modeling)Technology is a kind of using 3-D graphic as carrier while can be with The structure and application technology of the information model of numerous correlation engineerings, time or cost etc., can pass through computer modeling in load Mode realized, for architectural engineering from the overall process for designing, being built into O&M provide it is a kind of efficiently, it is collaboration, visual, even Intelligentized engineer application is supported.Currently, BIM technology has become the works such as building, water conservancy, highway and railway traffic infrastructure One hot information technology of journey construction field, and have become engineering construction field enterprise enhancing efficiency by relying on tapping internal latent power, enterprise competitiveness Development strategy.
Support Method be concrete bridge girder cast-in-situ construction method use a kind of common method, wherein beam-column type bracket and Shelf bracket is used common falsework structure type.It possible can be applied from numerous according to site technology condition A kind of not only economical rationality is obtained in work scheme but safe and reliable falsework organization plan be concrete bridge main girder construction safety, One important embodiment on the basis and project construction technical merit that progress and cost can be effectively controlled.Currently, coagulation The structure design of native bridge girder construction bracket is mainly drawn by AutoCAD and expresses design scheme, utilizes related Mechanics Calculation Software carries out the assessment of bearing capacity.This design method usually require it is multiple repeatedly, can just obtain satisfied result.Scheme In design, due to not cooperateing with for involved Mechanics Calculation information, three-view diagram and local detail information etc., cause to obtain rationally The design scheme of optimization is time-consuming and laborious, and standardization and the degree of automation are very low.
Invention content
It is an object of the invention to provide a kind of design sides two dimensionization BIM of concrete bridge main girder construction falsework structure Method realizes simplification, standardization and the high efficiency of concrete bridge main girder construction falsework structure design.
The invention is realized in this way:A kind of design sides two dimensionization BIM of concrete bridge main girder construction falsework structure Method includes the following steps:
A, the concrete bridge girder information to be poured for reinstating two-dimentional functional sweet additive expression is established with Interactive Drawing Software Model includes girder vertical section object, girder cross section object and the girder web plate plane pair of concrete-bridge to be poured As;
B, to establish concrete bridge main girder construction falsework Structure Calculation with Interactive Drawing Software required and meet bridge Load Combination parameter model as defined in beam construction technique normalizing, the Load Combination parameter model are with two-dimentional functional sweet additive Or other parameters forms is described;
C, it is respectively created including longeron, shelf bracket, cross bearer, transverse distribution beam, wedge-shaped truss, cross with Interactive Drawing Software The stay in place form of each component part of concrete bridge main girder construction falsework including connection, stringer, the lumps of wood and template and its pass The connecting line of connection, each stay in place form and its associated connecting line of establishment are two-dimentional functional sweet additive;
D, several reference planes are created with Interactive Drawing Software, and in each benchmark facial contour area encompassed, created Associated stay in place form characteristic curve describes coagulation jointly with associated stay in place form characteristic curve in several reference planes and its region The assembly informationmodel of each stay in place form in native bridge girder construction falsework, stay in place form characteristic curve and reference plane are two dimension Functional sweet additive;
E, include built-in fitting with Interactive Drawing Software or the foundation of third party's BIM softwares, flange, node connects, basic, sandbox exists Threedimensional model of the local structure under local coordinate system in interior falsework structure, for being built using third party's BIM softwares Vertical threedimensional model needs to be preserved with corresponding threedimensional model file;
F, in Interactive Drawing Software, by building the rod piece on stay in place form and the local structure in falsework structure Line attribute is connected, the link information of the threedimensional model of stay in place form and local structure is established;
G, according to step a --- the obtained various information models of step f generate concrete bridge girder with Interactive Drawing Software The three-dimensional BIM models for falsework structure of constructing, and automatically create its composed structure mechanics model;Or it is suitable by building Three-dimensional modeling data is integrated together in the concrete bridge main girder construction falsework of certain third party's BIM software, recycles the third The data interface techniques or plug-in part technology of square BIM softwares, establishment concrete bridge main girder construction props up temporarily on third party's BIM softwares The three-dimensional BIM models of frame structure.
The mode of establishing of the girder vertical section object is:The part in girder vertical section is drawn with Interactive Drawing Software Or whole two-dimentional geometric figures, it is merged into figure entirety, the two-dimentional geometric figure object of girder vertical section is constituted, passes through interaction Two-dimentional geometric figure object is transformed into two-dimentional functional sweet additive, as girder vertical section object by formula mapping software.
The mode of establishing of girder cross section object is:Draw the two-dimensional geometry figure in the cross section of a certain position on girder Shape is merged into figure entirety, constitutes the two-dimentional geometric figure object in girder cross section, by Interactive Drawing Software that two dimension is several What Drawing Object transforms into two-dimentional functional sweet additive, as girder cross section object.
The mode of establishing of the girder web plate planar object is:Reflection girder web plate thickness is drawn with Interactive Drawing Software The two-dimentional geometric figure of the girder web plate of variation is merged into figure entirety, constitutes the two-dimentional geometric figure pair of girder web plate plane As two-dimentional geometric figure object is transformed into two-dimentional functional sweet additive, as girder web plate by Interactive Drawing Software Planar object.
Girder vertical section object, girder cross section object and girder web plate planar object describe concrete bridge girder jointly Main three-dimensional structure size.
The stay in place form created in step c is a kind of two-dimentional functional sweet additive, include planform, rod length, Each bar cross section type, section specification, cross-wise direction, bar material, structural plan direction, the benchmark positioned for stay in place form Various attribute informations including point position;The stay in place form have a kind of face attribute, with description scheme template be it is horizontally disposed, Plumbing arrangement is arranged with horizontal plane at an inclination angle.
Step d is described by creating one or more reference plane objects and its associated stay in place form characteristic curve.Knot Structure template characteristic line intersects i.e. in reference plane profile, or with benchmark facial contour it is believed that stay in place form characteristic curve and base Quasi- mask is relevant, which has the face attribute of the reference plane associated by it.
The reference plane is a kind of two-dimentional functional sweet additive with face attribute information, to describe certain level noodles Type, referred to as horizontal plane, or to describe the vertical noodles type of the transverse direction vertical with girder vertical section, referred to as lateral vertical base Quasi- face, or describing the vertical noodles type of the facade vertical with girder cross section, referred to as facade reference plane, or to describe With the inclined-plane of a kind of reference plane oblique of above-mentioned three kinds of reference planes, referred to as oblique reference plane;Each reference plane has there are one datum mark, The datum mark has a plane coordinates and Height attribute relative to a certain specified point on concrete bridge girder to be poured, on girder This specified point is known as the origin of the space coordinates of girder origin and falsework design institute intension;Reference plane can paint Any position for making the graphical window in interactive graphics system, the relative tertiary location relationship with concrete bridge girder to be poured It can be determined by the elevation and plane coordinates attribute of the datum mark of reference plane.
Stay in place form characteristic curve is a kind of two-dimentional functional sweet additive, and it includes datum mark, characteristic curve direction, datum line to have With the attribute including the depth displacement of reference plane, can be plotted to interactive graphics system in reference plane associated with it;Pass through it The datum mark and characteristic curve direction attribute of stay in place form characteristic curve, carry out description scheme template characteristic line reference plane associated with it Relative position relation;Stay in place form characteristic curve also has stay in place form attribute, passes through stay in place form attribute description itself and structure mould The incidence relation of plate;By the engineering attribute of input structure template stay in place form characteristic curve and reference plane associated with it, jointly Spatial relation of the description scheme template relative to concrete bridge girder.
" the two-dimentional functional sweet additive " referred in the present invention is the two-dimensional graphics object in a kind of interactive graphics system, With following essential characteristic:
1, functional sweet additive is the two-dimensional graphics object in a kind of interactive graphics system, it has and traditional two-dimensional geometry The essentially identical interactive geometric operation function of Drawing Object, can be interacted in a manner of graphical interaction with user, can be with By selection, movement, deletion, duplication, rotation, amplification and diminution, array, decomposition, the operations such as merge.
2, functional sweet additive has diversified dispaly state, but the functional sweet additive of each type is having the same Engineering attribute information and specialized function.Functional sweet additive has its independent properties dialog as operation interface, and user can be with Its properties dialog is opened by mouse-click or double click event, on properties dialog, shows the engineering letter of user's care Breath, and may be implemented with the relevant various specialized function button commands of Drawing Object by operating specialized function button command With the relevant specialized function of functional sweet additive, such as calculates, inquires, creating other functional sweet additives.
3, functional sweet additive creation method includes following three kinds:
(1)Parametrization creates;
(2)It is automatically created by other function image objects;
(3)Conversion method is forced to create.
Wherein, forcing the basic step of conversion method establishment functional sweet additive is:Firstly, it is necessary to choose one or more two The Drawing Object of dimension;Secondly, the functional graphic pair of engineering attribute and specialized function is translated by a certain mouse action As.Conversion is forced whether to create successfully it is critical that line segment in geometry and Drawing Object to original Drawing Object Between it is vertical, intersection, it is parallel, closing, endpoint first place be connected, 2 points coincidence etc. line elements relationship analysis and identification, meeting work It can just be translated into corresponding functional sweet additive after journey constraints, and load upper corresponding engineering information automatically, make it With certain specialized function.
The invention enables the BIM design processes of concrete bridge main girder construction falsework structure to become a kind of simple operations The process of two-dimentional functional sweet additive can efficiently solve concrete bridge main girder construction falsework Structure Design and Calculation and ask Topic, it is thus achieved that simplification and the high efficiency of concrete bridge main girder construction falsework structure BIM design processes.
Description of the drawings
Fig. 1 is the structural schematic diagram of the post and beam falsework of concrete bridge girder.
Fig. 2 is the schematic view of facade structure of conventional shelf bracket.
Fig. 3 is the schematic view of facade structure of sandbox formula shelf bracket.
Fig. 4 is the planar graph of girder vertical section.
Fig. 5 is the planar graph in girder cross section.
Fig. 6 is the planar graph of girder web plate.
Fig. 7 is the stay in place form schematic diagram of shelf bracket.
Fig. 8 is reference plane and stay in place form characteristic curve schematic diagram.
Fig. 9 is race's illustration of the built-in fitting of falsework structure.
Figure 10 is race's illustration of the node connector of rod piece holder.
Figure 11 is race's illustration of steel pipe post basis built-in fitting.
Figure 12-Figure 14 is the three-dimensional BIM design examples figure of concrete bridge girder shelf bracket.
In figure:1, basic, 2, steel pipe post, 3, sandbox, 4, cross bearer, 5, longeron, 6, transverse distribution beam, 7, the lumps of wood and mould Plate, 8, flange, 9, connecting rod, 10, built-in fitting, 11, horizontal-associate, 12, wedge-shaped truss, 13, shelf bracket, 14, bearing beam, 15, it is small vertical Beam, 16, bridge pier, 17, concrete bridge girder.
Specific implementation mode
Concrete bridge main girder construction falsework structure involved by two dimensionization BIM design methods of the invention includes post and beam Holder(Fig. 1)And shelf bracket(Fig. 2, Fig. 3)Equal falseworks structure type.
In Fig. 1, concrete bridge girder 17 be arranged on left and right two bridge piers 16, by basis 1, steel pipe post 2, sandbox 3, The part such as cross bearer 4, longeron 5, transverse distribution beam 6, the lumps of wood and template 7, flange 8, connecting rod 9 composition concrete bridge main girder construction Falsework structure.In Fig. 2, concrete bridge girder 17 is arranged on bridge pier 16, by shelf bracket 13, transverse distribution beam 6, wedge The part such as shape truss 12, the lumps of wood and template 7, built-in fitting 10, horizontal-associate 11 forms the falsework structure of concrete bridge girder.Fig. 3 In, concrete bridge girder 17 is arranged on bridge pier 16, by shelf bracket 13, sandbox 3, bearing beam 14, small transverse distribution beam 6, small vertical The part such as beam 15, the lumps of wood and template 7, built-in fitting 10 forms the falsework structure of concrete bridge girder.
The two dimensionization BIM design methods of concrete bridge main girder construction falsework structure of the present invention include the following steps:
Step 1: concrete bridge girder information model is established, including girder vertical section object, girder cross section object and girder abdomen Plate planar object, girder therein refer to concrete bridge girder 17 shown in Fig. 1-Fig. 3.
The mode of establishing of girder vertical section object is:Part in girder vertical section or complete is drawn with Interactive Drawing Software The two-dimentional geometric figure in portion(Fig. 4), it is merged into figure entirety, the two-dimentional geometric figure object of girder vertical section is constituted, passes through friendship Two-dimentional geometric figure object is transformed into two-dimentional functional sweet additive, as girder vertical section object by Hu Shi mapping softwares.
The mode of establishing of girder cross section object is:Draw the two-dimentional geometric figure in the cross section of a certain position on girder (Fig. 5), it is merged into figure entirety, constitutes the two-dimentional geometric figure object in girder cross section, by Interactive Drawing Software by two Dimension geometrical form object transforms into two-dimentional functional sweet additive, as girder cross section object.
The mode of establishing of girder web plate planar object is:Reflection girder web plate thickness change is drawn with Interactive Drawing Software Girder web plate two-dimentional geometric figure(Fig. 6), it is merged into figure entirety, constitutes the two-dimentional geometric figure pair of girder web plate plane As two-dimentional geometric figure object is transformed into two-dimentional functional sweet additive, as girder web plate by Interactive Drawing Software Planar object.
Girder vertical section object, girder cross section object and girder web plate planar object describe concrete bridge girder jointly Main three-dimensional structure size.
Step 2: establishing the design and calculating of concrete bridge main girder construction falsework structure in Interactive Drawing Software Required Load Combination parameter model.
The design of falsework structure needs to consider dead load and two type of live load by related bridge Construction Technology specification Type, and be calculated by certain combination coefficient combination.Wherein, holder, template and beam body concrete gravity belong to dead load, people Group's equipment load, concrete vibrating and impact load and other wind and snow loads etc. belong to mobile load.Crowd's equipment load includes The various loads of the travelings such as construction personnel, construction material, equipment, transport and stacking.The value of every load and combination coefficient It chooses, is both needed to follow related bridge Construction Technology specification.When strength checking, the partial safety factor of dead load takes 1.2, point of live load Term coefficient takes 1.4;When Rigidity Calculation, the partial safety factor of dead load and live load takes 1.It is above-mentioned in addition to concrete qualification load The information and corresponding combined information of dead load and live load can be expressed by way of creating a parameters of loading table(See Table 1).
Step 3: by falsework STRUCTURE DECOMPOSITION at longeron, shelf bracket, cross bearer, transverse distribution beam, wedge-shaped truss, horizontal-associate, The component parts such as stringer, the lumps of wood and template, and be respectively created in Interactive Drawing Software above-mentioned each in falsework structure The stay in place form of component part, specific foundation step are:
3-1 draws the two-dimentional geometric figure of all stay in place form of above-mentioned each component part respectively in Interactive Drawing Software, It is merged into X-Y scheme entirety, and is converted to two-dimensional functional sweet additive, the stay in place form of as above-mentioned each component part.Knot Structure template may be plotted in any position in interactive graphics system.
The stay in place form is a kind of functional sweet additive expressed with rod piece centroidal line(Fig. 7), include planform, It is more including rod length, cross-sectional shape, section specification, cross-wise direction, bar material, structural plan direction, reference point location Attribute information, and rod piece reinforcing plate, section floor, rod piece shearing and built-in fitting link information can be set.Stay in place form Datum mark is the anchor point assembled to stay in place form.
3-2 inputs the engineering attribute of selected rod piece in each stay in place form, includes mainly:Stay in place form title, each rod piece Cross-sectional shape, section specification, cross-wise direction, bar material, structural plan direction, the reference point location positioned for stay in place form And face attribute of a relation etc. of the stay in place form relative to its associated reference plane.
The face attribute of a relation refer to the two-dimensional stay in place form of stay in place form be in reference plane, it is orthogonal with reference plane or With the information of reference plane oblique.When with reference plane oblique, need to input skew angle.
The reference plane is a kind of working face, has face attribute information, to express its different reference plane type.Reference plane Face attribute can be used to describe certain level noodles type(Referred to as " horizontal plane "), or to describe to hang down with girder vertical section The vertical noodles type of straight transverse direction(Referred to as " laterally vertical reference plane "), or to describe the facade lead vertical with girder cross section Face type directly(Referred to as " facade reference plane "), or to describe the inclined-plane with a certain reference plane oblique in above-mentioned three kinds of reference planes (Referred to as " oblique reference plane ").There are one datum mark, which has relative on concrete bridge girder each reference plane tool The plane coordinates and Height attribute of a certain specified point, this specified point is known as girder origin and falsework structure on girder Design the origin of the space coordinates of institute's intension.
Step 4: at a certain position of rod piece in stay in place form, draw straight line section it is orthogonal with the rod piece or Oblique is translated into connection line object, opens its dialog box, input structure template the tie line position tupe, Mainly include associated built-in fitting, node connection, joint strengthening, basis, sandbox local structure threedimensional model title Or threedimensional model filename, it is established that the link information of the threedimensional model of stay in place form and local structure, or realize that rod piece exists The trimming etc. at the position.
The step is that each group is created in the falsework structure that concrete bridge construction uses in Interactive Drawing Software At the assembly informationmodel of the stay in place form corresponding to structure division, it is as follows:
4-1 draws knot by drawing one or more reference plane objects in Interactive Drawing Software in each reference plane Structure template characteristic line describes the assembly informationmodel of the stay in place form jointly.
The establishment of 4-2 reference planes:A rectangular object is first drawn, then converts it into reference plane object, which belongs to Two-dimensional functional sweet additive, then reference point location is set, input its reference plane face attribute and datum mark relative to girder The elevation and plane coordinates of origin.Reference plane may be plotted in any position of graphical window in interactive graphics system.
The establishment of 4-3 stay in place form characteristic curves:For each reference plane in its profile, straight line is drawn, it will It is converted into stay in place form characteristic curve, then inputs or change the reference point location of stay in place form characteristic curve, stay in place form title, base The attributes such as the depth displacement of directrix and reference plane.Stay in place form characteristic curve can intersect with reference plane or in reference plane profile It is interior, so that stay in place form characteristic curve is established a kind of incidence relation with reference plane, the face attribute information with associated reference plane.Structure Template characteristic line is a kind of two-dimentional functional sweet additive, has the attributes such as datum mark, characteristic curve direction and stay in place form title.It is logical The direction of stay in place form characteristic curve is crossed to control direction of its associated stay in place form object in reference plane, it is desirable that according to structure The principle that template fiducial point coincides with stay in place form characteristic curve datum mark, tool of the control structure template in structure feature line direction Body position.
4-4 is common to describe by reference plane, stay in place form characteristic curve, stay in place form and its incidence relation between them Relative tertiary location relationship of the temporary structure component part relative to concrete bridge girder corresponding to stay in place form.
In the stay in place form schematic diagram of the shelf bracket of Fig. 7, label 25 is the corresponding stay in place form of shelf bracket structure, Label 21 is datum mark, and label 22 is built-in fitting connecting line, and label 23 is the connecting line for rod piece between shear structure template, Label 24 is the connecting line for floor to be arranged on rod piece in stay in place form.
Step 5: creating each composition in the falsework structure that concrete bridge construction uses in Interactive Drawing Software The assembly informationmodel of stay in place form corresponding to structure division, the referred to as assembly informationmodel of falsework structure, it is specific to walk Suddenly it is:
5-1 draws a rectangular object in interactive graphics software respectively, then converts it into reference plane object, the object Belong to two-dimensional functional sweet additive, then reference point location be set in its properties dialog, inputs the face attribute of its reference plane, And datum mark is relative to attributes such as the elevation of girder origin and plane coordinates.
5-2 draws straight line in reference plane profile, then is translated into stay in place form characteristic curve, right at its It talks about and the reference point location of stay in place form characteristic curve, the depth displacement of datum line and reference plane, associated structure is inputted or changed on frame The attributes such as template name;Multiple stay in place form characteristic curves can be arranged in one reference plane.
In the reference plane of Fig. 8 and stay in place form characteristic curve schematic diagram, label 35 is reference plane, and label 34 is reference plane Datum mark, label 31,32 are the characteristic curves of stay in place form, and label 33 is the datum mark of stay in place form characteristic curve.
5-3 repeats step 5-1 and 5-2, creates other reference planes and its associated stay in place form characteristic curve.
Step 6: being established using race's technology of Revit softwares in the falsework structure of concrete bridge main girder construction use The Revit races of local structure including built-in fitting, node connection, joint strengthening, basis, sandbox, and the form of race's file It preserves.
Step 7: all information models obtained according to abovementioned steps, concrete is automatically generated with Interactive Drawing Software The three-dimensional BIM model datas of beam bridge falsework structure, and its composed structure mechanics model is automatically created, it recycles Revit plug-in part technologies create the three-dimensional BIM models for building corresponding concrete beam bridge falsework automatically on Revit softwares.Specifically Implementation steps are as follows:
7-1 utilizes girder information model, the Load Combination parameter model that step 1 and step 2 are established, and can calculate girder and appoint Meaning cross section longitudinal direction line load and lateral line load consider the Load Combination rule of correlation bridge Construction Technology specification when load calculates Model requirement.
7-2 obtains the stay in place form of each component part of concrete bridge main girder construction falsework structure using step 3, The model information of stay in place form is analyzed, the three-dimensional BIM models corresponding to stay in place form are constructed.
The connecting line for each stay in place form that 7-3 is established using step 4 uses the tupe information of association rod piece The method of trimming is obtained the three-dimensional BIM models after each stay in place form trimming, and is connected using built-in fitting, node constructed by step 5 Connect, joint strengthening, flange, basis, the local structures such as sandbox Revit races information, by the methods of translating local structure, rotating The Revit races stay in place form associated with it made is assembled together, the three-dimensional BIM moulds after obtaining each stay in place form trimming and assembling Type.
7-4 is believed using the falsework Standard being made of reference plane, stay in place form characteristic curve constructed by step 5 Model is ceased, the three-dimensional BIM models after the obtained each stay in place form of step 7-3 is trimmed and assembled, according to its associated structure Template characteristic line and reference plane build coordinate system, using the methods of translation, rotation dress unified by certain specified girder origin Match, form the three-dimensional BIM models of concrete bridge main girder construction falsework structure, this three-dimensional BIM models can pass through The plug-in part technology of Revit softwares is created, shows and is inquired.
7-5 forms the three-dimensional BIM models of concrete bridge main girder construction falsework structure using step 7-4, by each structure Template is converted to rod piece finite element model, by analyzing the built-in fitting associated by stay in place form, determines rod piece finite element model Joint constraint condition;Unit segmentation needs to consider to give largest unit length limit, and considers rod piece corresponding to each stay in place form Finite element node between connection relation, and bar element number and nodes encoding can be automatic by the assemble sequence of stay in place form It generates.Combined load parameter model is built using the girder information model and step 2 of step 1 structure, is calculated and coagulation The load that the unit that native bridge girder is in direct contact is born, and then construct the three-dimensional rod piece finite element mould of falsework structure Type, and the MCT command streams of Midas softwares are automatically generated, then the three of falsework structure is calculated and inquired in Midas softwares Tie up Mechanics Calculation result.

Claims (7)

1. a kind of two dimensionization BIM design methods of concrete bridge main girder construction falsework structure, characterized in that including following step Suddenly:
A, the concrete bridge girder information to be poured for reinstating two-dimentional functional sweet additive expression is established with Interactive Drawing Software Model includes girder vertical section object, girder cross section object and the girder web plate plane pair of concrete-bridge to be poured As;
B, the required Load Combination of concrete bridge main girder construction falsework Structure Calculation is established with Interactive Drawing Software to join Exponential model, the Load Combination parameter model are described with two-dimentional functional sweet additive or other parameters form;
C, it is respectively created including longeron, shelf bracket, cross bearer, transverse distribution beam, wedge-shaped truss, cross with Interactive Drawing Software The stay in place form of each component part of concrete bridge main girder construction falsework including connection, stringer, the lumps of wood and template and its pass The connecting line of connection, each stay in place form and its associated connecting line of establishment are two-dimentional functional sweet additive;
D, several reference planes are created with Interactive Drawing Software, and in each benchmark facial contour area encompassed, created Associated stay in place form characteristic curve describes coagulation jointly with associated stay in place form characteristic curve in several reference planes and its region The assembly informationmodel of each stay in place form in native bridge girder construction falsework, stay in place form characteristic curve and reference plane are two dimension Functional sweet additive;
E, include built-in fitting with Interactive Drawing Software or the foundation of third party's BIM softwares, flange, node connects, basic, sandbox exists Threedimensional model of the local structure under local coordinate system in interior falsework structure;
F, in Interactive Drawing Software, by building the rod piece on stay in place form and the local structure in falsework structure Line attribute is connected, the link information of the threedimensional model of stay in place form and local structure is established;
G, according to step a --- the obtained various information models of step f generate concrete bridge girder with Interactive Drawing Software The three-dimensional BIM models for falsework structure of constructing, and automatically create its composed structure mechanics model;Or it is suitable by building Three-dimensional modeling data is integrated together in the concrete bridge main girder construction falsework of certain third party's BIM software, recycles the third The data interface techniques or plug-in part technology of square BIM softwares, establishment concrete bridge main girder construction props up temporarily on third party's BIM softwares The three-dimensional BIM models of frame structure.
2. the two dimensionization BIM design methods of concrete bridge main girder construction falsework structure according to claim 1, special Sign is that the mode of establishing of the girder vertical section object is:With Interactive Drawing Software draw girder vertical section in part or Whole two-dimentional geometric figures is merged into figure entirety, constitutes the two-dimentional geometric figure object of girder vertical section, pass through interactive mode Two-dimentional geometric figure object is transformed into two-dimentional functional sweet additive, as girder vertical section object by mapping software.
3. the two dimensionization BIM design methods of concrete bridge main girder construction falsework structure according to claim 1, special Sign is that the mode of establishing of girder cross section object is:The two-dimentional geometric figure in the cross section of a certain position on girder is drawn, It is merged into figure entirety, constitutes the two-dimentional geometric figure object in girder cross section, by Interactive Drawing Software by two-dimensional geometry Drawing Object transforms into two-dimentional functional sweet additive, as girder cross section object.
4. the two dimensionization BIM design methods of concrete bridge main girder construction falsework structure according to claim 1, special Sign is that the mode of establishing of the girder web plate planar object is:Reflection girder web plate thickness is drawn with Interactive Drawing Software to become The two-dimentional geometric figure of the girder web plate of change is merged into figure entirety, constitutes the two-dimentional geometric figure object of girder web plate plane, Two-dimentional geometric figure object is transformed into two-dimentional functional sweet additive, as girder web plate plane by Interactive Drawing Software Object.
5. the two dimensionization BIM design methods of concrete bridge main girder construction falsework structure according to claim 1, special Sign is that the stay in place form created in step c is a kind of two-dimentional functional sweet additive, includes planform, rod length, each bar Part cross-sectional shape, section specification, cross-wise direction, bar material, structural plan direction, the benchmark point positioned for stay in place form Various attribute informations including setting.
6. the two dimensionization BIM design methods of concrete bridge main girder construction falsework structure according to claim 1, special Sign is that step d is described by creating one or more reference plane objects and its associated stay in place form characteristic curve.
7. the two dimensionization BIM design methods of concrete bridge main girder construction falsework structure according to claim 6, special Sign is, in step e, for the node of built-in fitting included in concrete bridge main girder construction falsework structure, rod piece holder Local structure part including connection, steel pipe post basis built-in fitting, sandbox needs to build corresponding threedimensional model, or utilizes Its threedimensional model of third party BIM software buildings, and preserved with corresponding threedimensional model document form.
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