CN105138719A - Method for establishing fully-parameterized three-dimensional model for inclined-tube-box-shaped inverted siphon body inlet section - Google Patents
Method for establishing fully-parameterized three-dimensional model for inclined-tube-box-shaped inverted siphon body inlet section Download PDFInfo
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Abstract
The invention discloses a method for establishing a fully-parameterized three-dimensional model for an inclined-tube-box-shaped inverted siphon body inlet section. Step 1, establishing a three-dimensional model prototype for the siphon body inlet section; step 2, processing and generating a three-dimensional model for the siphon body inlet section containing water-conveying holes; step 3, modifying the three-dimensional model of the siphon body, and finally generating a three-dimensional mode for the inverted siphon body inlet section; and step 4, forming a three-dimensional modeling template for the inverted siphon body inlet section, packaging in a structured manner, and establishing a fully-parameterized three-dimensional digital geometrical model for the inclined-tube-box-shaped inverted siphon body inlet section. The method is suitable for comparison of design schemes and constant refining of design processes; the method, by taking structural sizes as well as structural shapes as the input parameters, rapidly generates or corrects the three-dimensional model of the inclined-tube-box-shaped inverted siphon body inlet section, so that the degree of parameterization is high and the model correction is simple.
Description
Technical field
The present invention relates to three-dimensional digital model constructing technology, particularly relate to the method that population parameter sets up inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model.
Background technology
Inverted-siphon is a kind of grade separation hydraulic structure occurring in channel and road, river to intersect or often adopt when channel passes through mountain valley, it is by means of the water-head of upstream and downstream, water is transported to downstream end from upstream extremity, and the inverted-siphon of inclined tube box-shaped is a kind of form of inverted-siphon.Inverted-siphon pipe shaft is divided into multistage by structural joint, wherein the bodily form of pipe shaft inducer and stressed comparatively complicated, and its size and the bodily form should make current smooth-going, to reduce the loss of flood peak.At present, inverted-siphon three-dimensional digital model adopts CAD software to build based on geometric properties substantially, method is confined to physical dimension as inputting disposable generation model, as Cao Pengliang, " AutoCAD2012 three-dimensional design is in the application of south water to north inverted-siphon transition " that Cao Renjun delivers sets forth the method using multi-section-line stretching to create inverted-siphon transition model, and for example Yang Bao army, " the inverted-siphon CAD system based on external sort is developed " paper that Wang Zongmin etc. deliver sets forth the method using mutual input structure size to set up inverted siphon figure model, the model ubiquity generated: the bodily form is single, poor universality, parametrization degree is not high, and model modification is loaded down with trivial details, when the bodily form needs larger adjustment, substantially all will re-establish three-dimensional model, the subsequent design achievement based on former three-dimensional model all can not be inherited.
Summary of the invention
For solving above technical matters, object of the present invention provides a kind of population parameter to set up inclined tube box-shaped inverted-siphon pipe shaft inducer model method, solves the deficiency of above-mentioned background technology.
Population parameter of the present invention sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, realizes by following technical scheme:
Step one, sets up pipe shaft inducer three-dimensional model blank; Step 2, processing generates the pipe shaft inducer three-dimensional model containing water hole; Step 3, modifies hole body three-dimensional model, finally generates inverted-siphon pipe shaft inducer three-dimensional model; Step 4, forms inverted-siphon pipe shaft inducer three-dimensional modeling template.
In technique scheme, in described step one, further comprising the steps of: a. sets up inducer global coordinate system XYZ, with inverted-siphon pipe shaft import upstream face center for initial point sets up import coordinate system by right-handed system, Y-axis points to water (flow) direction, and in Z-axis direction, scale is elevation; B. under global coordinate system, draw inverted-siphon pipe shaft grade line, at YZ coordinate plane, draw grade line according to inverted-siphon gradient parameter, true origin is grade line starting point, and gradient line length is by entrance length state modulator; C. draw inverted-siphon xsect, set up xsect local coordinate system one UV, local coordinate system one is in grade line Normal plane, and initial point is normal plane and grade line intersection point, and in the same way, U axle and X-axis are in the same way for V axle and Z axis; D. at local coordinate system one UV, xsect outline is drawn according to inverted-siphon sectional dimension parameter; E. according to the vertical parting of inducer and vertical parting situation, be drawn into entity by xsect along grade line, add breastwork, antiskid tooth three-dimensional model, form inverted-siphon inducer three-dimensional model blank.
In technique scheme, in described step 2, comprise the following steps: f. sets up hole body surface model.Set up hole body local coordinate system two UV, local coordinate system two is in the body side wall plane of hole, and initial point is the normal direction projection of global coordinate system initial point, and in the same way, U axle and Y-axis are in the same way for V axle and Z axis; G., in local coordinate system two, the type of curved surface at the bottom of selecting hole top, providing holes clear height equidimension parameter, set up curve at the bottom of hole summit curve and hole respectively, top, hole function curve has two types respectively, one is segmental arc+straight section, and two is full straight sections, selectes according to top, hole curved surface type parameter; At the bottom of hole, function curve has three types respectively, and one is flat section+segmental arc+tiltedly section, and two is segmental arc+tiltedly sections, and three is complete tiltedly sections, selectes according to curved surface type parameter at the bottom of hole; H. by the bottom of hole, hole summit curve, according to wide size normal extension hole, hole body curved surface, by hole count state modulator hole body curved surface number; I. the inverted-siphon pipe shaft inducer three-dimensional model containing water hole is obtained by hole body curved surface segmentation pipe shaft inducer three-dimensional model blank.
In technique scheme, in described step 3, comprise step: J., to hole body four edge chamfering, adds the transition angle of inflow point and edge chamfering, middle pier rounding.
In technique scheme, in described step 4, comprise the following steps: k. encapsulates above-mentioned step a to step j, form inclined tube box-shaped inverted-siphon pipe shaft inducer 3 d geometric modeling digital template, with pipe shaft dimensional parameters, cross section and port size parameter, hole health shape and dimensional parameters, breastwork parameter and antiskid teeth size parameter for template external input parameter.
In technique scheme, described top, step g hole function curve V=f
topand function curve V=f at the bottom of hole (U)
the end(U), the function curve of described every type is sectional curve, by straight-line segment and arc section composition.
The present invention adopts population parameter high accuracy three-dimensional model building method, structuring encapsulates, and sets up inclined tube box-shaped inverted-siphon pipe shaft inducer Full Parameterized 3-dimensional digital geometric model with pipe shaft size and parting type, cross section and port size, hole health shape and size, breastwork and antiskid teeth size etc. fast for input parameter.Not only using physical dimension as input parameter, simultaneously using structure bodily form etc. as input parameter, quick generation or amendment inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, parametrization degree is high, model modification is simple, be applicable to the design process of Comparision and selection of design plan and continuous refinement refinement, important booster action is all played for inclined tube box-shaped inverted siphon structure optimal design, computational analysis and concrete reinforcement.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that Full Parameterized of the present invention sets up inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model;
Fig. 2 is the inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model blank that the present invention sets up;
Fig. 3 is hole summit curve, curve at the bottom of hole and the inverted-siphon pipe shaft inducer three-dimensional model containing water hole that the present invention sets up.
Fig. 4 is holes parameterized model of the present invention;
Fig. 5 is the present invention three hole parameterized model;
Fig. 6 is specific embodiment of the invention inclined tube box-shaped inverted-siphon pipe shaft inducer axonometric drawing and coordinate system;
Fig. 7 is that specific embodiment of the invention pipe shaft grade line is drawn;
Fig. 8 is specific embodiment of the invention cross section profile and dimension constraint;
Fig. 9 is that function curve at the bottom of function curve and hole is pushed up in specific embodiment of the invention hole;
Figure 10 is the chart of pipe shaft inducer body conformation types of the present invention;
Figure 11 is pipe shaft inducer parting type parameter of the present invention and diagram form.
Wherein: 1-breastwork, 2-xsect outline, 3-parting face, 4-antiskid tooth, 5-pipe shaft grade line, 6-hole summit curve, curve at the bottom of 7-hole, 8-import upstream face, 9-embodiment pipe shaft grade line.
Embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not form limitation of the invention, only for example.
Population parameter sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, and its inverted-siphon pipe shaft inducer 3-dimensional digital geometric model adopts Stepwise Refinement, progressively thinning method, and as shown in Figure 1, the flow process of modeling method of the present invention is:
Step 101, set up pipe shaft inducer three-dimensional model blank, as Fig. 2, its structure contains breastwork 1, xsect outline 2, parting face 3, antiskid tooth 4, pipe shaft grade line 5, and concrete steps comprise:
A. inducer global coordinate system XYZ is set up.With inverted-siphon pipe shaft import upstream face center for initial point sets up import coordinate system by right-handed system, Y-axis points to water (flow) direction, and in Z-axis direction, scale is elevation;
B., under global coordinate system, inverted-siphon pipe shaft grade line is drawn.At YZ coordinate plane, draw grade line according to inverted-siphon gradient parameter, true origin is grade line starting point, and gradient line length is by entrance length state modulator;
C. inverted-siphon xsect is drawn.Set up xsect local coordinate system one UV, local coordinate system one is in grade line Normal plane, and initial point is normal plane and grade line intersection point, and in the same way, U axle and X-axis are in the same way for V axle and Z axis;
D. at local coordinate system one, xsect outline is drawn according to inverted-siphon sectional dimension parameter;
E. according to the vertical parting of inducer and vertical parting situation, be drawn into entity by xsect along grade line, add breastwork, antiskid tooth three-dimensional model, form inverted-siphon inducer three-dimensional model blank.
Step 102, processing generates the pipe shaft inducer three-dimensional model containing water hole, and see Fig. 3, illustrated water hole number is 2, comprises the following steps:
F. hole body surface model is set up.Set up hole body local coordinate system two UV, local coordinate system two is in the body side wall plane of hole, and initial point is the normal direction projection of global coordinate system initial point, and in the same way, U axle and Y-axis are in the same way for V axle and Z axis;
G., in local coordinate system two, type, the providing holes clear height equidimension parameter of curved surface at the bottom of selecting hole top and hole, set up the function of curve 7 at the bottom of hole summit curve 6 and hole respectively, their curvilinear function is respectively: V=f
topand V=f (U)
the end(U), top, hole function curve f
top(U) have two types, one is segmental arc+straight section, and two is full straight sections, selectes according to top, hole curved surface type parameter; Function curve V=f at the bottom of hole
the end(U) have three types, one is flat section+segmental arc+tiltedly section, and two is segmental arc+tiltedly sections, and three is complete tiltedly sections, selectes according to curved surface type parameter at the bottom of hole;
H. by the bottom of hole, hole summit curve, according to wide size normal extension hole, hole body curved surface, by hole count state modulator hole body curved surface number;
I. the inverted-siphon pipe shaft inducer three-dimensional model containing water hole is obtained by hole body curved surface segmentation pipe shaft inducer three-dimensional model blank.
Step 103, modifies hole body three-dimensional model, finally generates inverted-siphon pipe shaft inducer three-dimensional model, comprises step:
J. to hole body four edge chamfering, the transition angle of inflow point and edge chamfering is added, middle pier rounding.
Step 104, above-mentioned steps encapsulates, and forms inverted-siphon pipe shaft inducer three-dimensional modeling template, comprises step k:
Encapsulation step a is to step j, form inclined tube box-shaped inverted-siphon pipe shaft inducer 3 d geometric modeling digital template, with pipe shaft dimensional parameters, cross section and port size parameter, hole health shape and dimensional parameters, breastwork parameter and antiskid teeth size parameter for template external input parameter, in table one.
Table one: pipe shaft inducer three-dimensional modeling template external input parameter of the present invention
Set up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model by above-mentioned population parameter, three-dimensional model can be realized and set up rapidly and revise.Select inverted-siphon pipe shaft inducer bodily form type (as shown in Figure 10) and parting type (as shown in figure 11), input or amendment hole count, pipe shaft size, cross section and port size, breastwork size, antiskid tooth and hole body thin portion physical dimension, inverted-siphon pipe shaft inducer three-dimensional model will automatically be set up or upgrade.Pipe shaft inducer body conformation types (as shown in Figure 10) of the present invention, pipe shaft inducer parting type parameter of the present invention and diagram (as shown in figure 11).
Such as: design parameter hole count 2 is revised as 3, then generate 3 pore models fast by 2 pore models, see accompanying drawing, wherein, Fig. 4 is the parameterized model in two holes, Fig. 5 is the parameterized model in three holes, achieve inverted-siphon pipe shaft inducer three-dimensional model to associate completely with design driver, automatic renewal, again because the inflow point in hole adopts rounding, the even transition methods such as middle pier rounding and hole body edge chamfering, runner is in the stream shape gradual change bodily form, the hole body three-dimensional model obtained maintains the consistance with true water hole, ensure that accuracy and the reliability of elevation computation.
The concrete steps of specific embodiment of the invention modeling are:
A. set up inverted-siphon pipe shaft inducer global coordinate system XYZ, see Fig. 6, for initial point, set up pipe shaft inducer global coordinate system by right-handed system with pipe shaft import upstream face 8 (not containing breastwork) central point, Y-axis points to water (flow) direction, scale elevation in Z-axis direction.
B. at YZ coordinate plane, draw embodiment pipe shaft grade line 9 according to the pipe shaft gradient, grade line starting point is at coordinate origin, and inducer grade line function: Z=-slope ratio × Y, Y ∈ [0, pipe shaft horizontal length], is shown in Fig. 7.
C. set up xsect local coordinate system one UV, local coordinate system one is in grade line Normal plane, and initial point is normal plane and grade line intersection point, and in the same way, U axle and X-axis are in the same way for V axle and Z axis.
D. at local coordinate system one, draw xsect outline according to inverted-siphon cross section and port size, cross-sectional profiles with U axle and V axle for axis of symmetry, with sectional dimension constraint, design parameter is: side wall thick 60, and hole is wide by 290, middle honest and sincere 100, top width 800, top board thick 60, hole clear height 260, base plate thick 60, wherein, top width+(top board thick+hole clear height+base plate is thick)/side wall slope ratio × 2=914.1, outline left and right hypotenuse V rotational symmetry, on outline, following U rotational symmetry, is shown in Fig. 8.
E. by xsect outline, by the parting type of vertical seam or vertical bank line, initial three-dimensional model is drawn into along grade line direction.
F. on initial three-dimensional model, set up breastwork three-dimensional model according to breastwork size, and increase antiskid tooth three-dimensional model, form inverted-siphon pipe shaft inducer three-dimensional model blank.
G. set up hole body local coordinate system two UV, local coordinate system two is in the body side wall plane of hole, and initial point is the normal direction projection of global coordinate system initial point, and in the same way, U axle and Y-axis are in the same way for V axle and Z axis.
H., according to curved surface type and dimensional parameters at the bottom of Kong Ding, hole, in local coordinate system two, the type of curved surface at the bottom of selecting hole top, hole and providing holes clear height equidimension parameter, set up the function V=f of curve 7 at the bottom of hole
the endand the function V=f of hole summit curve 6 (U)
top(U), see Fig. 9, at the bottom of figure mesopore, the oblique straight section of curved surface is pushed up in hole and grade line is symmetrical, at a distance of a hole clear height size, curved surface arc section at the bottom of hole and top, hole curved surface arc section are respectively with curved circular angular radius at the bottom of hole and the curved circular angular radius constraint of top, hole, and oblique straight section respectively with corresponding is tangent.
I. curve, hole summit curve at the bottom of hole are pressed normal extension and formed hole body curved surface, the wide constraint in tensile elongation hole.Hole is wide=(top width-2 × side wall thick-(hole count-1) × middle pier is thick)/hole count.By hole count state modulator creating holes body curved surface number, segmentation inducer three-dimensional model blank obtains the inverted-siphon pipe shaft inducer three-dimensional model containing water hole.
J. carry out chamfering to hole body four seamed edges, add the transition angle of inflow point and edge chamfering, middle pier rounding etc., obtain final inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model.
K. above-mentioned steps is encapsulated, with location coordinate and sizing parameters for input.Reference location point, gradient direction line, select curved surface type at the bottom of inverted-siphon parting type, Kong Ding and hole, input or amendment dimensional parameters, can set up or revise inverted-siphon pipe shaft inducer parametrization three-dimensional model quickly and easily, carry out the work such as structure three-dimensional stability analysis, elevation computation, Optimal Structure Designing, the three-dimensional arrangement of reinforcement of concrete.
Above-mentioned unspecified part is prior art.
Claims (6)
1. population parameter sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, it is characterized in that, in turn includes the following steps:
Step 101, sets up pipe shaft inducer three-dimensional model blank;
Step 102, processing generates the pipe shaft inducer three-dimensional model containing water hole;
Step 103, modifies hole body three-dimensional model, generates inverted-siphon pipe shaft inducer three-dimensional model;
Step 104, forms inverted-siphon pipe shaft inducer three-dimensional modeling template.
2. the population parameter according to right 1 sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, and it is characterized in that, described step 101 comprises:
A. set up inducer global coordinate system XYZ, with inverted-siphon pipe shaft import upstream face center for initial point sets up import coordinate system by right-handed system, Y-axis points to water (flow) direction, and in Z-axis direction, scale is elevation;
B. under global coordinate system, draw inverted-siphon pipe shaft grade line, at YZ coordinate plane, draw grade line according to inverted-siphon gradient parameter, true origin is grade line starting point, and gradient line length is by entrance length state modulator;
C. draw inverted-siphon xsect, set up xsect local coordinate system one UV, local coordinate system one is in grade line Normal plane, and initial point is normal plane and grade line intersection point, and in the same way, U axle and X-axis are in the same way for V axle and Z axis;
D. at local coordinate system one UV, xsect outline is drawn according to inverted-siphon sectional dimension parameter;
E. according to the vertical parting of inducer and vertical parting situation, be drawn into entity by xsect along grade line, add breastwork, antiskid tooth three-dimensional model, form inverted-siphon inducer three-dimensional model blank.
3. the population parameter according to right 1 or 2 sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, and it is characterized in that, described step 102 comprises:
F. set up hole body surface model, set up hole body local coordinate system two UV, local coordinate system two is in the body side wall plane of hole, and initial point is the normal direction projection of global coordinate system initial point, and in the same way, U axle and Y-axis are in the same way for V axle and Z axis;
G., in local coordinate system two, type, the providing holes clear height dimensional parameters of curved surface at the bottom of selecting hole top and hole, set up function curve at the bottom of hole top function curve and hole respectively, top, hole function curve has two types respectively, one is segmental arc+straight section, and two is full straight sections, selectes according to top, hole curved surface type parameter; At the bottom of hole, function curve has three types respectively, and one is flat section+segmental arc+tiltedly section, and two is segmental arc+tiltedly sections, and three is complete tiltedly sections, selectes according to curved surface type parameter at the bottom of hole;
H. by the bottom of hole, hole summit curve, according to wide size normal extension hole, hole body curved surface, by hole count state modulator hole body curved surface number;
I. the inverted-siphon pipe shaft inducer three-dimensional model containing water hole is obtained by hole body curved surface segmentation pipe shaft inducer three-dimensional model blank.
4. the population parameter according to right 3 sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, and it is characterized in that, described step 103 comprises:
J. to hole body four edge chamfering, the transition angle of inflow point and edge chamfering is added, middle pier rounding.
5. the population parameter according to right 4 sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, and it is characterized in that, described step 104 comprises:
K. encapsulation step a is to step j, form inclined tube box-shaped inverted-siphon pipe shaft inducer 3 d geometric modeling digital template, with pipe shaft dimensional parameters, cross section and port size parameter, hole health shape and dimensional parameters, breastwork parameter and antiskid teeth size parameter for template external input parameter.
6. the population parameter according to right 4 or 5 sets up the method for inclined tube box-shaped inverted-siphon pipe shaft inducer three-dimensional model, it is characterized in that, described top, step g hole function curve V=f
topand function curve V=f at the bottom of hole (U)
the end(U), the function curve of described every type is sectional curve, by straight-line segment and arc section composition.
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