A steel box girder bridge space curved plate longitudinal stiffening rib BIM model parameterized modeling method and system

Abstract

The scheme belongs to the field of bridge design modeling, and specifically relates to a steel box girder bridge space curved panel longitudinal stiffening rib BIM model parameterized modeling method and system. Including the following steps: S10: opening the main window body of the TeklaStructure platform, by inputting the space geometric arrangement rule parameters of the curved panel longitudinal rib group, S20: by putting the cross section shape of the longitudinal stiffening rib which is not in the window body definition library into the tekla platform database; S30: obtaining the intersection position coordinate library of each longitudinal stiffening rib and transverse partition structure part; S40: from the window input, the longitudinal stiffening rib opening shape parameters corresponding to the cross section of the longitudinal stiffening rib. The scheme uses an independent window body application program to input the arrangement rule of the longitudinal stiffening rib and define the cross section shape, creating a positive, parameterized and intelligent method, quickly and intelligently generating a steel box girder bridge space curved panel longitudinal stiffening rib BIM model on the TeklaStructure software platform, accurately determining the opening position and automatically opening the part model intersecting with the stiffening rib.

Description

TECHNICAL FIELD

[0001] The present scheme belongs to the field of bridge design modeling, and particularly relates to a kind of steel box girder bridge space curved panel longitudinal stiffening rib BIM model parameterized modeling method and system. BACKGROUND

[0002] At present, under the trend of building informatization, BIM technology is increasingly mature in the application of various fields of the construction industry. However, due to the different work focuses and structural complexities among various professions, the application maturity of BIM technology is unevenly developed among various professions, for example, the application of BIM technology in the pipe network profession with relatively simple structure is relatively mature, and the application maturity of BIM technology in the bridge and tunnel profession with relatively complex structure is relatively low. In addition, the BIM application in different stages of the life cycle of a project involves multiple software platforms, and data loss or repeated data input modeling on different software platforms may occur through data transmission of BIM models among different software platforms.

[0003] The patent with application number CN111475885A discloses a kind of curved steel box girder parameterized modeling method and device, including response to user input instruction, standard information selection interface is shown to user, wherein, at least one bridge layer selection list is contained in standard information selection interface;At least one bridge layer is shown to user based on the selection of at least one bridge layer contained in standard information selection interface by user, wherein, bridge layer at least contains partition plate layer, top plate layer, web layer, bottom plate layer, stiffening rib layer, manhole layer, welding layer and vertical curve layer;Parameter collection interface is shown to user in response to the instruction of at least one bridge layer edited by user;Configuration bridge layer information is responded based on the parameter input of parameter collection interface by user.

[0004] The scheme makes material quantity statistics and management standardized and automated through three-dimensional BIM model; quickly adapts to changes; accurately outputs and positions special-shaped plates; and improves construction precision. However, due to the complexity of structure, high requirements of model precision and drawing rate, BIM technology is relatively backward in the development of forward design and detailed drawing design of steel box girder bridge structure. TeklaStructure software platform has a powerful drawing processing system and an engineering quantity statistics system, can reasonably extract data through BIM model to efficiently and high-quality generate engineering drawings and engineering quantity table, and is an ideal platform for solving the problem of low drawing rate in the application of BIM technology. However, the following problems may occur in the modeling of longitudinal stiffening rib of curved panel of complex steel box girder bridge on TeklaStructure software platform: there are a large number of openings at the intersection position of transverse partition structure parts and longitudinal ribs, and it is difficult to accurately determine the opening position and quickly define the complex shape opening. SUMMARY

[0005] The scheme provides a steel box girder bridge space curved panel longitudinal stiffening rib BIM model parameterized modeling method and system, which can easily create a steel box girder bridge space curved panel stiffening rib model and automatically open a longitudinal rib hole on the transverse partition structure part on the TeklaStructure software platform.

[0006] In order to achieve the above purpose, the scheme provides a steel box girder bridge space curved panel longitudinal stiffening rib BIM model parameterized modeling method, which comprises the following steps:

[0007] S10: Open the main window of the TeklaStructure platform, input the space geometric arrangement rule parameters of the curved panel longitudinal rib group, call the curved panel edge line, and obtain the geometric linear data of the longitudinal stiffening rib of the curved panel of the whole bridge;

[0008] S20: Put the cross section shape of the longitudinal stiffening rib which is not in the window form definition library into the TeklaStructure platform database; the geometric linear data of the curved panel longitudinal stiffening rib is combined with the cross section shape to generate a longitudinal rib BIM model;

[0009] S30: Obtain the intersection position coordinate library of each longitudinal stiffening rib and the transverse partition structure part;

[0010] S40: Input the longitudinal stiffening rib hole shape parameters corresponding to the longitudinal stiffening rib cross section from the window, and complete the longitudinal stiffening rib hole opening operation of the transverse partition structure part of the whole bridge by combining the intersection coordinates and the hole shape parameters.

[0011] The beneficial effects of the scheme are as follows: the scheme adopts an independent window application program to input the arrangement rule of the longitudinal stiffening rib and define the cross section shape, creates a positive, parameterized and intelligent method, quickly and intelligently generates a steel box girder bridge space curved panel longitudinal stiffening rib BIM model on the TeklaStructure software platform, creates a steel box girder bridge space curved panel stiffening rib bim model and can intelligently open holes for the transverse partition parts intersecting therewith, and can also easily create a complex and variable steel box girder bridge space curved panel model on the TeklaStructure software platform, accurately determine the hole position, and can automatically open holes for the part model intersecting with the stiffening rib.

[0012] Further, in S10, when the number of curved panel longitudinal stiffening ribs is large, the space geometric linear positioning adopts group definition, one curved panel can be provided with one or more groups of longitudinal stiffening rib groups, and when multiple groups are defined for the whole bridge, the dataview control is input, one longitudinal rib group is defined in each row, and the number of rows is automatically increased.

[0013] Further, in the S10, the longitudinal stiffening rib group is created according to the curve panel edge line offset to obtain the longitudinal rib boundary range line, and the longitudinal rib group line shape is obtained by equal distance or fixed distance range in the unequal width longitudinal rib boundary range and attached to the curve panel.

[0014] Further, in the S10, the longitudinal rib group line shape generated by equal distance has equal longitudinal rib spacing at each section, the longitudinal rib spacing is large at the position with wide spacing of the longitudinal rib boundary range line, the longitudinal rib spacing is small at the position with narrow spacing of the range line, and is suitable for the case of small change of the boundary range line width; the line shape generated by fixed distance has a fixed numerical spacing of the longitudinal rib, and is arranged at a fixed spacing from the starting point to the ending point of the range line at each section, and the number of longitudinal ribs is large at the section with wide range and small at the section with narrow range.

[0015] Further, in the S10, the curve panel includes a horizontal curve panel and a vertical curve panel, the horizontal curve panel spacing control adopts a transverse horizontal distance, and the vertical curve panel spacing control adopts a vertical distance; the determination of the longitudinal rib boundary range line is divided into two steps, first, offset is performed according to the curve panel edge line, wherein the horizontal curve panel is offset along the transverse direction, and the vertical curve panel is offset along the vertical direction, and then the two boundary lines are projected onto the curve panel through projection, the horizontal curve panel is projected vertically, and the vertical curve panel is projected transversely and horizontally.

[0016] Further, in the S30, after the longitudinal rib boundary range line is obtained, the position of each pair of corresponding key point groups is cycled between the two boundary lines, and the following algorithm is used to obtain the key point coordinate group of the corresponding position longitudinal rib group;

[0017] The boundary line corresponding key point coordinates Pi1(Xi1, Yi1, Zi1), Pi2(Xi2, Yi2, Zi2) are known, the number of longitudinal ribs n is equal distance, the input spacing di is fixed distance, and di is fixed distance;

[0018] A local coordinate system is established, the intersection of Pi1 and Pi2 and the road center line is the coordinate origin, the vector composed of the left and right edge line plane projection points is the X axis, and the Z axis is the Z axis. The converted coordinates of Pi1 and Pi2 are Pji1 (Xji1, 0, Zji1) and Pji2 (Xji2, 0, Zji2).

[0019] The total spacing of the boundary key points is calculated:

[0020] Horizontal curve panel: Di= abs(Xji1- Xji2)

[0021] Vertical curve panel: Di= abs(Zji1- Zji2)

[0022] Longitudinal rib spacing di=Di / n

[0023] n=downward integer(Di / di)

[0024] Longitudinal rib key points:

[0025] Intersection with horizontal plate: straight line Pji1 Pji2 and straight line X=Xji1+Di*ii;

[0026] Intersection with vertical curved plate: straight line Pji1 Pji2 and straight line Z=Zji1+Di*ii;

[0027] Wherein, ii is a natural number greater than 0 and less than n.

[0028] Further, the intersection of the longitudinal rib and the cross partition structure part in the S30 includes two steps, first, judging whether the longitudinal rib fold line intersects with the plane where the cross partition structure part is located, if intersecting, obtaining the corresponding intersection point coordinates, obtaining the longitudinal rib fold line key point list from the longitudinal rib fold beam, obtaining the corresponding partition plate plane from the polygon plate control point coordinates of the cross partition structure part, and cycling the coordinate list of the longitudinal rib key point coordinates, a line segment is formed by the front and rear two coordinates, and it is judged whether the line segment intersects with the partition plate plane, if intersecting, it is judged whether the intersection point is out of the loop, if the loop ends and there is no intersection point, it is judged that it does not intersect, if intersecting, it is further judged whether the opening boundary intersects with the cross partition structure part, the intersection point obtained from the fold line and the plane where the cross partition structure part is located and the opening size are used to obtain the boundary key point list in the plane of the cross partition structure part through geometric calculation, and then the opening boundary line segment list perpendicular to the plane is obtained by offsetting and connecting the lines in front of and behind each point in the key point group. Cycle the line segment list and judge whether it intersects with the cross partition structure part, if the number of intersection points is greater than zero, it is judged that the longitudinal rib and the cross partition part need to be opened, and the intersection point coordinates of the previous step are taken as the opening base point coordinates.

[0029] Further, a steel box girder bridge space curved plate longitudinal stiffening rib BIM model parameterized modeling system, comprising: a TeklaStructure software, the TeklaStructure software is developed with an independent window application, the TeklaStructure software comprises a parameter input module, a model generation module, a position calculation module;

[0030] The parameter input module inputs the positioning rule of the curved plate stiffening rib group through the window, selects the edge line of the curved plate as the boundary baseline, defines the in-plane arrangement rule and the corresponding parameters to define the in-plane position of the stiffening rib group, and specifies the main plate of the stiffening rib group to determine the attachment curved surface of the stiffening rib position.

[0031] The model generation module defines a new section according to the window input parameters, the new section parameters are automatically generated by a macro program to add a new section to the platform section library, and then the program calls the corresponding section as needed to apply to the longitudinal stiffening rib fold beam, and the section and the geometric position curve are combined to obtain the curved plate longitudinal stiffening rib BIM model.

[0032] The position calculation module obtains the intersection coordinates of each longitudinal stiffening rib and the transverse partition structure part through S30, and the transverse partition structure part is subjected to corresponding hole opening according to different longitudinal rib sections at the corresponding coordinate positions; the main plate hole opening tool is completed by using a self-defined component, the component inputs the hole opening main plate, the hole opening shape and the hole opening position, and executes the hole opening operation. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The method flowchart of the embodiment of the application is shown.

[0034] Figure 2 The structure schematic diagram of the longitudinal rib group arranged equidistantly in the variable-width range of the embodiment of the application is shown.

[0035] Figure 3 The structure schematic diagram of the longitudinal rib group arranged equidistantly in the variable-width range of the embodiment of the application is shown.

[0036] Figure 4 The hole opening section model diagram of the partition plate part at the longitudinal rib passing position of the embodiment of the application is shown.

[0037] Figure 5 The flowchart of the longitudinal rib group line shape creation of the embodiment of the application is shown.

[0038] Figure 6 The planar diagram of the longitudinal rib group line shape creation implementation method of the embodiment of the application is shown.

[0039] Figure 7 The section diagram of the longitudinal rib group line shape creation implementation method of the embodiment of the application is shown.

[0040] Figure 8 The flowchart of the intersection determination of the longitudinal rib and the transverse partition part of the embodiment of the application is shown. EMBODIMENT

[0041] The following is further described in detail through specific embodiments:

[0042] The embodiment is basically as shown in the accompanying drawings: Figure 1 , 5 -7:

[0043] A steel box girder bridge space curved plate longitudinal stiffening rib BIM model parameterized modeling method, comprising the following steps:

[0044] S10: Open the main window of the Tekla Structure platform, call the curved panel edge line by inputting the spatial geometric arrangement rule parameters of the curved panel longitudinal rib group, and obtain the geometric linear data of the longitudinal stiffening rib of the full bridge curved panel; The number of longitudinal stiffening ribs of the curved panel is large, and the spatial geometric linear positioning is defined in groups. One curved panel can be provided with one group or multiple groups of longitudinal stiffening rib groups. When multiple groups need to be defined for the full bridge, the dataview control is used for input, and each row defines a longitudinal rib group. The number of rows is automatically increased.

[0045] Then, the boundary line of the longitudinal rib group is created according to the offset of the curved panel edge line, and the linear shape of the longitudinal rib group attached to the curved panel is obtained in the equal interval or fixed interval range within the boundary range of different widths.

[0046] The linear shape of the equal interval generated longitudinal rib group has equal intervals between each longitudinal rib at each section. The longitudinal rib interval is large at the position where the interval of the boundary range line is wide, and the longitudinal rib interval is small at the position where the interval of the boundary range line is narrow, which is suitable for the case that the boundary range line is small and wide. The linear shape of the fixed interval generated has a fixed value interval of the longitudinal rib. The longitudinal ribs are arranged at a fixed interval from the starting point of the range line to the ending point of the range line at each section. The number of longitudinal ribs is large at the section with a wide range, and the number of longitudinal ribs is small at the section with a narrow range.

[0047] The curved panel includes a horizontal curved panel and a vertical curved panel. The horizontal curved panel spacing control adopts a transverse horizontal distance, and the vertical curved panel spacing control adopts a vertical distance. The determination of the longitudinal rib boundary range line is divided into two steps. Firstly, offset is performed according to the curved panel edge line, wherein the horizontal curved panel is offset along the transverse direction, and the vertical curved panel is offset along the vertical direction. Then, the two boundary lines are projected onto the curved panel through projection. The horizontal curved panel is projected vertically, and the vertical curved panel is projected transversely and horizontally.

[0048] S20: Put the section shape of the longitudinal stiffening rib which is not in the window definition library into the tekla platform database; the curved panel longitudinal stiffening rib geometric linear data is combined with the section shape to generate the longitudinal rib BIM model;

[0049] S30: Obtain the intersection position coordinate library of each longitudinal stiffening rib and the transverse partition structure part;

[0050] After obtaining the boundary range line of the longitudinal rib, each pair of corresponding key point group positions between the two boundary lines is cycled, and the key point coordinate group of the corresponding position longitudinal rib group is obtained by using the following algorithm;

[0051] Given the boundary line corresponding key point coordinates Pi1(Xi1, Yi1, Zi1), Pi2(Xi2, Yi2, Zi2), the number of longitudinal ribs n, n is equal interval, input interval di, di is fixed interval;

[0052] A local coordinate system is established, the intersection of Pi1 Pi2 and the road center line is the coordinate origin, the left and right edge line planes of the road are projected

[0053] The vector composed of the shadow points is X axis, the Z axis is Z axis, and the coordinates of Pi1 and Pi2 after conversion are Pji1 (Xji1, 0, Zji1), Pji2 (Xji2, 0, Zji2)

[0054] Zji1), Pji2(Xji2, 0, Zji2)

[0055] The total distance of the boundary key points is calculated:

[0056] The horizontal curved panel: Di = abs (Xji1-Xji2)

[0057] The vertical curved panel: Di = abs (Zji1-Zji2)

[0058] The longitudinal rib distance di = Di / n

[0059] n = floor (Di / di)

[0060] The longitudinal rib key points are calculated:

[0061] The intersection with the horizontal panel: the straight line Pji1 Pji2 and the straight line X = Xji1 + Di*ii;

[0062] The intersection with the vertical curved panel: the straight line Pji1 Pji2 and the straight line Z = Zji1 + Di*ii;

[0063] Wherein, ii is a natural number greater than 0 and less than n.

[0064] As shown in the accompanying Figure 8 :

[0065] The intersection of the longitudinal rib and the transverse partition structure part includes two steps. First, it is judged whether the longitudinal rib fold line intersects with the plane where the part is located. If it intersects, the corresponding intersection point coordinates are obtained. The longitudinal rib fold beam extracts the longitudinal rib fold line key point list, and the corresponding partition panel is obtained from the part polygon panel control point coordinates. The coordinates of the coordinate list of the longitudinal rib key point coordinates are cycled, and a line segment is formed by the front and rear two coordinates. It is judged whether the line segment intersects with the partition panel. If it intersects, it is judged whether the intersection point is out of the loop. If the loop ends and there is no intersection point, it is judged that it does not intersect. If it intersects, it is further judged whether the opening boundary intersects with the part. The intersection point obtained from the fold line and the plane where the part is located and the opening size are geometrically calculated to obtain the boundary key point list in the plane of the part. Then, by offsetting each point in the plane before and after the key point group of the opening boundary, a line segment list perpendicular to the plane of the opening boundary is obtained. The line segment list is cycled and it is judged whether it intersects with the transverse partition structure part. If the number of intersection points is greater than zero, it is judged that the longitudinal rib and the transverse partition part need to be opened, and the intersection point coordinates obtained in the last step are taken as the opening base point coordinates.

[0066] As shown in the accompanying Figures 2-4 :

[0067] S40: From the window input corresponding to the longitudinal stiffening rib section of the longitudinal stiffening rib opening shape parameter, the intersection coordinates and the opening shape parameter are combined to complete the full bridge transverse partition structure longitudinal stiffening rib opening operation, the longitudinal stiffening rib group of the curved plate can be arranged at equal distance and fixed distance in the variable width arrangement range, and the structure section can be self-defined without the section in the library, and the opening style supports any self-defined shape.

[0068] A steel box girder bridge space curved plate longitudinal stiffening rib BIM model parameterized modeling system, comprising: a TeklaStructure software, the TeklaStructure software is developed with an independent window application, the TeklaStructure software includes a parameter input module, a model generation module, a position calculation module

[0069] The parameter input module inputs the positioning rule of the curved plate stiffening rib group through the window, selects the edge line of the curved plate as the boundary baseline, defines the in-plane arrangement rule and the corresponding parameters to define the in-plane position of the stiffening rib group, and specifies the main plate of the stiffening rib group to determine the attachment curved surface of the stiffening rib position;

[0070] The model generation module defines a new section according to the parameters input by the window, the new section parameter automatically generates a new section into the platform section library through a macro program, and then the program calls the corresponding section as needed to apply to the longitudinal stiffening rib folded beam, and the section and the geometric position curve are combined to obtain the curved plate longitudinal stiffening rib BIM model;

[0071] The position calculation module obtains the intersection coordinates of each longitudinal stiffening rib and the partition plate through S30, and performs corresponding opening on the partition plate parts according to different longitudinal rib sections at the corresponding coordinate positions; the main plate opening tool is completed by using a self-defined component, the component inputs the opening main plate, the opening shape and the opening position, and executes the opening operation.

[0072] The above only describes the embodiments of the present application, and the well-known specific structures and characteristics in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be regarded as the protection scope of the present application, and these will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A steel box girder bridge spatial curved panel longitudinal stiffener BIM model parameterized modeling method, characterized in that: It comprises the following steps: S10: Open the main window of the Tekla Structure platform, input the spatial geometric arrangement rule parameters of the curved panel longitudinal stiffener group, call the curved panel edge line, and obtain the geometric linear data of the longitudinal stiffener of the full bridge curved panel; In the S10, the boundary range line of the longitudinal stiffener is obtained according to the offset of the curved panel edge line, and the linear shape of the longitudinal stiffener group attached to the curved panel is obtained in the boundary range with equal or fixed distance; In the S10, the linear shape of the equal distance generated longitudinal stiffener group is equal in distance between each longitudinal stiffener at each section, the distance between the longitudinal stiffener boundary range lines is wide, the distance between the longitudinal stiffeners is large, the distance between the range lines is narrow, and the distance between the longitudinal stiffeners is small, which is suitable for the case that the boundary range line is small and wide; The linear shape of the fixed distance has a fixed value distance of the longitudinal stiffener, and the longitudinal stiffeners are arranged with a fixed distance from the starting point to the ending point of the range line at each section, and the number of longitudinal stiffeners is large in the wide section and small in the narrow section; In the S10, the curved panel includes horizontal curved panel and vertical curved panel, the horizontal distance is used for horizontal curved panel spacing control, and the vertical distance is used for vertical curved panel spacing control; The determination of the boundary range line of the longitudinal stiffener is divided into two steps, first, offset according to the curved panel edge line, horizontal curved panel along the horizontal offset, vertical curved panel along the vertical offset, then project the two boundary lines onto the curved panel, the horizontal curved panel is projected vertically, and the vertical curved panel is projected horizontally; S20: Put the section shape of the longitudinal stiffener that is not in the window definition library into the tekla platform database; The geometric linear data of the curved panel longitudinal stiffener is combined with the section shape to generate the longitudinal stiffener BIM model; S30: Obtain the intersection position coordinate library of each longitudinal stiffener and the transverse structure part; S40: From the window input, the longitudinal stiffener opening shape parameter corresponding to the longitudinal stiffener section is combined with the intersection coordinate and the opening shape parameter to complete the longitudinal stiffener opening operation of the full bridge transverse structure.

2. The BIM model parameterization modeling method for the longitudinal stiffening rib of the spatial curved panel of the steel box girder bridge according to claim 1, characterized in that: In the S10, the number of curved panel longitudinal stiffeners is large, the spatial geometric linear positioning adopts group definition, one curved panel can set one or more longitudinal stiffener groups, when multiple groups are defined in the full bridge, dataview control is used for input, one longitudinal stiffener group is defined in each row, and the number of rows is automatically increased.

3. The BIM model parameterization modeling method for the longitudinal stiffening rib of the spatial curved panel of the steel box girder bridge according to claim 1, characterized in that: In the S30, after obtaining the boundary range line of the longitudinal stiffener, the position of each pair of corresponding key point group is cycled between the boundary range lines of the longitudinal stiffener, and the key point coordinate group of the corresponding position longitudinal stiffener group is obtained by using the following algorithm; Given the key point coordinates Pi1(Xi1, Yi1, Zi1), Pi2(Xi2, Yi2, Zi2) of the longitudinal stiffener boundary range line, the number of longitudinal stiffeners n, n is equal distance, input interval di, di is fixed distance; Establish local coordinate system, Pi1 Pi2 intersection with road center line as coordinate origin, vector composed of road left and right edge line projection points as X axis, vertical as Z axis, Pi1 Pi2 converted coordinates as Pji1 (Xji1, 0, Zji1), Pji2 (Xji2, 0, Zji2) Boundary key point calculation total distance: Horizontal curved panel: Di= abs (Xji1- Xji2) Vertical curved panel: Di= abs (Zji1- Zji2) Longitudinal stiffening rib spacing di=Di / n N=downward rounding (Di / di) Sought longitudinal stiffening rib key point: Intersection with horizontal curved panel: straight line Pji1 Pji2 and straight line X=Xji1+di×ii; Intersection with vertical curved panel: straight line Pji1 Pji2 and straight line Z=Zji1+di×ii; Wherein, ii is greater than 0 and less than n natural number.

4. The BIM model parameterization modeling method for the longitudinal stiffening rib of the spatial curved panel of the steel box girder bridge according to claim 3, characterized in that: In the S30, the intersection of the longitudinal stiffening rib and the cross structure part includes two steps, first, judge whether the longitudinal stiffening rib fold line intersects with the plane where the cross structure part is located, if intersecting, get the corresponding intersection point coordinates, get the longitudinal stiffening rib fold line key point list from the longitudinal stiffening rib fold beam, get the corresponding cross structure part plane from the cross structure part polygon plate control point coordinates, loop the coordinates of the longitudinal stiffening rib fold line key point list, form a line segment by the former and the latter two coordinates, judge whether the line segment intersects with the cross structure part plane, if intersecting, judge whether the intersection point is out of the loop, if the loop ends without intersection point, judge not intersecting, if intersecting, further judge whether the opening boundary intersects with the cross structure part, get the boundary key point list in the cross structure part plane by the intersection point obtained from the fold line and the plane where the cross structure part is located and the opening size, then get the opening boundary line segment list by offsetting and connecting the line in front of and behind each point in the opening boundary key point group in the plane, loop the line segment list and judge whether it intersects with the cross structure part entity, if the intersection point number is greater than zero, judge that the longitudinal stiffening rib and the cross structure part need opening operation, and take the intersection point coordinates of the last step as the opening base point coordinates.

5. A steel box girder bridge spatial curved panel longitudinal stiffening rib BIM model parameterized modeling system comprising a steel box girder bridge spatial curved panel longitudinal stiffening rib BIM model parameterized modeling method as claimed in claim 1, characterized in that: It comprises: TeklaStructure software, the TeklaStructure software is developed with an independent window application program, the TeklaStructure software comprises a parameter input module, a model generation module and a position calculation module; The parameter input module inputs the positioning rule of the curved panel stiffening rib group through the window, selects the edge line of the curved panel as the boundary baseline, defines the in-plane arrangement rule and the corresponding parameters to define the in-plane position of the stiffening rib group, specifies the main plate of the stiffening rib group to determine the attached curved surface of the stiffening rib position; The model generation module defines a new section according to the parameters input by the window, generates a new section by a macro program and adds the new section to the platform section library, then the program calls the corresponding section as needed and applies it to the longitudinal stiffening rib fold beam, and the curved panel longitudinal stiffening rib BIM model is obtained by combining the section and the curved panel longitudinal stiffening rib geometric line data; The position calculation module obtains the intersection coordinates of each longitudinal stiffening rib and the transverse partition structure part through S30, and calls the assembly according to different longitudinal stiffening rib sections at the corresponding coordinate positions to perform corresponding hole opening on the transverse partition structure part; The mainboard hole opening tool is completed by using a self-defined assembly. The assembly inputs the mainboard to be opened, the opening shape and the opening position, and executes the opening operation.

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