CN110119546A - A kind of three-dimensional stability calculation method of hydraulic structure - Google Patents
A kind of three-dimensional stability calculation method of hydraulic structure Download PDFInfo
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- CN110119546A CN110119546A CN201910349332.3A CN201910349332A CN110119546A CN 110119546 A CN110119546 A CN 110119546A CN 201910349332 A CN201910349332 A CN 201910349332A CN 110119546 A CN110119546 A CN 110119546A
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Abstract
The invention belongs to a kind of three-dimensional stability calculation method of hydraulic structure of hydraulic engineering technical field, calculation method includes: the three-dimensional geometry entity of equal proportion modeling creation hydraulic structure；According to the practical load assignment born of hydraulic structure, the load assignment body in addition to dead load is created；Additional data is assigned respectively to three-dimensional geometry entity and load assignment body；The sliding surface of specified hydraulic structure, obtains the sliding surface information；According to three-dimensional geometry entity, load assignment body, additional data and sliding surface information, sliding force and skid resistance are obtained, hydraulic structure is calculated along the buckling safety factor of the specified sliding surface.The purpose of the present invention is to provide a kind of three-dimensional stability calculation methods of hydraulic structure, improve the efficiency and accuracy of stability Calculation.
Description
Technical field
The present invention relates to hydraulic engineering technical fields, more particularly to a kind of stable calculating method of hydraulic structure.
Background technique
Stability Calculation is an important content during Design of The Hydraulic Structure, due to information technology and BIM technology
Fast development, three dimensional design are achieved in Hydraulic Engineering Design and are widely applied, but the stability Calculation of hydraulic structure is still
Conventional two-dimensional space is rested on, calculating process is time-consuming and laborious, especially complicated hydro-structure, the meter of structure centroid and volume
The processes such as calculation, the calculating of bearing load are sufficiently complex, and traditional stable calculating method usually requires to carry out various letters to labyrinth
Change and carry out approximate calculation, calculated result is inaccurate, and process is more many and diverse.How complicated hydro-structure is quickly and efficiently carried out
Stability Calculation, the efficiency and accuracy that hydraulic structure stability analysis is continuously improved are a urgent problem needed to be solved.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of three stability maintenances of hydraulic structure
Determine calculation method, improves the efficiency and accuracy of stability Calculation.
In order to solve the above technical problems, the present invention provides a kind of three-dimensional stability calculation method of hydraulic structure, calculating side
Method includes:
The three-dimensional geometry entity of equal proportion modeling creation hydraulic structure.
According to the practical load assignment born of the hydraulic structure, the load assignment body in addition to dead load, institute are created
Stating load assignment body is to be distributed consistent virtual three-dimensional entity with actual loading.Load assignment body refer to be to hydraulic structure by
The shape size of specific location and the external force distribution of power makes description, has geometric attribute.
Additional data is assigned respectively to the three-dimensional geometry entity and load assignment body, and the additional data is non-geometric category
Property, the additional data includes material bulk density, load direction and load type.Material bulk density, load direction, load type etc. are attached
Addend is according to the non-geometry information being attached on three-dimensional geometry entity and load assignment body, and content is not with three-dimensional geometry entity
Or load assignment body change and change.
The sliding surface for specifying the hydraulic structure, obtains the sliding surface information, and the sliding surface information includes sliding
The geometry and physical data in face.Specified sliding surface refers to the setting that sliding may occurs along this face according to hydraulic structure and do
Face can set one or more according to different project situations.
According to the three-dimensional geometry entity, the load assignment body, the additional data and the sliding surface information, to institute
The load for stating hydraulic structure carries out statistics and summarizes calculating, obtains sliding force and skid resistance, the hydraulic structure is calculated
Along the buckling safety factor of the specified sliding surface.
Based on above-mentioned technical characteristic, the three-dimensional geometry entity is by AutoCAD or Microstation 3 d modeling software
Creation.It is of course also possible to use other existing 3 d modeling softwares establish three-dimensional geometry entity, which is according to actual size
The geometrical model of equal proportion creation, reflects the true shape information of hydraulic structure.
Based on above-mentioned technical characteristic, the load type includes water pressure, soil pressure, uplift pressure and dead load.
Based on above-mentioned technical characteristic, the geometry and physical data of the sliding surface include the position of sliding surface, size, centroid
And it is attached to the coefficient of friction on the sliding surface.
Based on above-mentioned technical characteristic, the three-dimensional geometry entity is with the volume of the load assignment body respectively multiplied by corresponding
Material bulk density determines each load.As three-dimensional geometry entity determines multiplied by the bulk density of concrete the self weight of hydraulic structure；Water
The volume that compressive load is distributed body determines water pressure multiplied by the water capacity again；The volume of soil pressure load assignment body is determined multiplied by native bulk density
Soil pressure；The volume of uplift pressure load assignment body determines uplift pressure multiplied by the water capacity again.
The Impact direction of the three-dimensional geometry entity and the load assignment body determines each load direction respectively；Such as three-dimensional
The stress of geometry entity is gravity, and direction is vertically downward；The Impact direction of water pressure load assignment body is perpendicular to water pressure
Acting surface direction；The Impact direction of soil pressure load assignment body is perpendicular to soil pressure acting surface direction；Uplift pressure load assignment
The Impact direction of body is vertically upward.
The centroid of the three-dimensional geometry entity and the load assignment body determines each load point respectively.
Each load resultant force merger is carried out according to the modeling change in coordinate axis direction of the three-dimensional geometry entity.
Above-mentioned load counting aggregation process is actually the three elements for determining power, the i.e. size of load, direction, position
Three elements add up the load of the same direction, obtain the resultant force such as sliding force and skid resistance.Load counting summarize belong to it is existing
Basic mechanical common sense in technology.
According to the geometry of the three-dimensional geometry entity, the load assignment body, the additional data and the sliding surface and
Physical data carries out statistics to the load of the hydraulic structure and summarizes calculating, obtains sliding force and skid resistance, institute is calculated
Hydraulic structure is stated along the buckling safety factor of the specified sliding surface.The calculation method and sliding surface of sliding force and skid resistance
Buckling safety factor calculation method can according to prior arts specifications such as existing " water sluice project SL265-2016 " and
Basic mechanical principle acquires in the art.The computer language that calculating preferably passes through any existing maturation is programmed calculating and asks
?.
Safety coefficient will be allowed to compare as defined in the buckling safety factor being calculated and specification, judges hydraulic structure
Stablize safe condition.Hydraulic structure allows the determination of safety coefficient can be according to existing " water sluice project SL265-2016 "
It is executed Deng code requirement in the art.Load counting aggregation process and buckling safety factor specified in prior art specification
Calculating signal are as follows:
Buckling safety factor calculation formula
Wherein: Kc is buckling safety factor
F is coefficient of friction
∑ G is the sum of vertical force, to be positive downwards, is negative upwards.Usually there are the loads such as dead load, water weight, uplift pressure.
∑ H is the sum of horizontal force, and to be positive along glide direction, opposite direction is negative.Usually there are water pressure, soil pressure, wind
The loads such as pressure, unrestrained pressure.
F ∑ G indicates that skid resistance, ∑ H indicate sliding force.
The ratio between skid resistance and sliding force are safety coefficient, and theoretically secure coefficient, which is greater than 1, to be indicated to stablize, but practical meter
The safety coefficient calculated, which needs to be greater than, allows safety coefficient just to indicate safety, and allowing safety coefficient is according to project scale, knot
The factors such as structure grade are inquired in corresponding specification and are obtained.
Load counting aggregation process is substantially exactly to calculate the process of ∑ G and ∑ H, and ∑ G is that load summarizes in vertical direction
It is calculated, i.e., the power of all vertical directions is positive upwards, is negative is added up to obtain downwards.∑ H be load in the horizontal direction
Summarize and be calculated, i.e., the power of all horizontal directions is positive along glide direction, and opposite direction, which is negative, to be added up to obtain.
Hydraulic structure of the invention includes the common hydro-structures such as lock chamber, pump house, gravity dam, retaining wall, applicable
In calculation method of the invention.
As described above, a kind of three-dimensional stability calculation method of hydraulic structure provided by the invention, by three-dimensional space
The three-dimensional geometry entity and load assignment body for establishing hydraulic structure, additional data is attached on entity, is believed according to geometry
Breath, additional information and sliding surface information complete load counting and summarize calculating, and obtain hydraulic structure stablizes safe calculated result.
With following
The utility model has the advantages that
Without simplifying the shape of hydraulic structure, the integrality of original structure is not destroyed, calculating process is complete in three-dimensional space
At, be easy to load counting, calculating process is visual in image, programming automation operation, can be improved hydraulic structure stability Calculation
Efficiency and accuracy.
Detailed description of the invention
Fig. 1 is shown as the flow diagram of hydraulic structure three-dimensional stability calculation method of the present invention in an embodiment.
Fig. 2 is shown as creation hydraulic structure three-dimensional geometry entity schematic diagram of the present invention in an embodiment.
Fig. 3 is shown as creation load assignment body schematic diagram of the present invention in an embodiment.
Fig. 4 is shown as imparting three-dimensional geometry entity and load assignment body additional data signal of the present invention in an embodiment
Figure.
Fig. 5 is shown as the present invention and obtains three-dimensional stability schematic diagram of calculation result in an embodiment.
Component label instructions
S101~S105 method and step
S201 upper water compressive load is distributed body
S202 uplift pressure load assignment body
S203 downstream water compressive load is distributed body
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Fig. 1 is the flow diagram of the three-dimensional stability calculation method of hydraulic structure of the present invention in an embodiment.
Hydraulic structure in the present invention includes the common hydro-structures such as lock chamber, pump house, gravity dam, retaining wall.It is especially suitable
For coming in every shape, complicated hydraulic structure.Since conventional two-dimensional stable calculating method needs to carry out hydro-structure
Various simplification, to carry out force analysis, calculating process is complicated, precision is low.The present invention provides a kind of three-dimensional of hydraulic structure
Stable calculating method, calculation method include:
Step S101: creation hydraulic structure three-dimensional geometry entity.
As shown in Fig. 2, creating the three-dimensional geometry entity of certain sluice lock chamber using AutoCAD software.The three-dimensional is several
The foundation of other 3 d modeling softwares such as Microstation can also be used in what entity, is created according to actual size equal proportion
Geometrical model reflects the true shape information of hydraulic structure.
Step S102: according to the practical load assignment born of hydraulic structure, load assignment body is created.
If Fig. 3 shows, according to the distribution of this practical bearing load of sluice lock chamber, creation on the basis of three-dimensional geometry entity
Upper water compressive load distribution body S201, downstream water compressive load are distributed body S203 and uplift pressure load assignment body S202.Figure
Shown in load assignment body show forced position and distribution of force shape, as upper water compressive load distribution body S201 be exactly
It is determined, can be established by the depth of water according to pressure distribution shape.
It should be noted that load assignment body is position and the distribution wound according to all types of loads (not including dead load)
The pseudo-entity not actually existed built, for calculating the load of hydraulic structure receiving.
Load assignment body refers to the 3D solid created according to load assignment situation, volume and the product representation of material bulk density
Load, centroid indicate load point, and in addition load action direction needs user actively to be assigned according to load actual conditions
Physically.Such as water pressure, with the increase of the depth of water, water pressure is incrementally increased, and is Triangle-Profile, is just established when creating entity
At the triangular prism for pressing Triangle-Profile.Triangular prism volume indicates that water pressure size, triangular prism centroid indicate hydraulic pressure multiplied by the water capacity again
Point of force application, effect of water pressure direction are to be assigned on triangular prism perpendicular to acting surface direction by user.
Creation process can draw unit load size at control point for according to load assignment shape, i.e., when hypothesis bulk density is 1
Unit load, and connect forming face, it stretched to form 3D solid along load action face width direction, is i.e. completion load point
The creation process of cloth body.
Step S103: material parameter, load direction, load type are assigned respectively to three-dimensional geometry entity and load assignment body
Equal additional datas.
If Fig. 4 shows, to the three-dimensional geometry entity of sluice lock chamber and load assignment body assign material parameter, load direction,
The additional datas such as load type.It should be noted that the additional datas such as the material parameter, load direction, load type are attached
In the non-geometry information on three-dimensional geometry entity and load assignment body, content is not with three-dimensional geometry entity or load assignment
The change of body and change.Preferably, the material parameter refers to the information such as material bulk density, material description；The load direction is
Refer to the force direction of hydraulic structure bearing load；The load type refers to water pressure, soil pressure, uplift pressure and structure certainly
All kinds of loads such as again.The contents such as load type shown in pop-up box, load direction, bulk density, annotation are only a kind of signal in Fig. 4.
Step S104: specified hydraulic structure sliding surface.
In one embodiment of the invention, sliding surface refers to that hydraulic structure may be slided along this face, for this reality
Applying example is sluice lock floor base surface.It should be noted that sliding surface information is primarily referred to as the position of sliding surface, ruler
The data such as very little, centroid and the coefficient of friction being attached on sliding surface.
Step S105: load counting is carried out according to three-dimensional geometry entity, load assignment body, additional data and sliding surface information
Summarize calculating, obtains hydraulic structure along the stability Calculation result for specifying sliding surface.
If Fig. 5 shows, load is carried out based on three-dimensional geometry entity, load assignment body, additional data and sliding surface information and is summarized
Statistics, obtain sluice lock chamber stablizes safe calculated result.
It should be noted that the load counting aggregation process includes:
Three-dimensional geometry entity determines that each load is big multiplied by corresponding material bulk density respectively with the volume of load assignment body respectively
It is small；
Three-dimensional geometry entity is determined each load action direction by forced direction with load assignment body respectively；
The centroid of three-dimensional geometry entity and load assignment body determines each load point respectively；
Each load resultant force merger is carried out according to the modeling change in coordinate axis direction of three-dimensional geometry entity.
Water pressure, uplift are calculated according to three-dimensional geometry entity, load assignment body, additional data and sliding surface Information Statistics
All kinds of loads such as power, soil pressure summarize calculating according to load action directional statistics, obtain the resultant force such as skid resistance and sliding force and believe
Breath, obtains buckling safety factor Kc using hydraulic structure calculation of stability against sliding formula.By the buckling safety factor being calculated with
Allow safety coefficient to compare as defined in specification, judges the Against Sliding Stability safe condition of hydraulic structure.It is steady shown in pop-up box in Fig. 5
Dingan County's overall coefficient Kc content is only a kind of signal.
Previous embodiment is illustrated by taking sluice lock chamber as an example, but of the invention applicable is not limited only to this, it may also be used for
The common hydro-structure such as pump house, gravity dam, retaining wall, and load type is also not necessarily limited to water pressure, soil pressure and uplift pressure, may be used also
Including water weight, wind pressure and unrestrained pressure etc..
In conclusion a kind of three-dimensional stability calculation method of hydraulic structure of the invention, by being established in three-dimensional space
The three-dimensional geometry entity and load assignment body of hydraulic structure, additional data is attached on entity, according to geological information, attached
Add information and sliding surface information to complete load counting and summarize calculating, obtain hydraulic structure stablizes safe calculated result.
The present invention is not necessarily to simplify the shape of hydraulic structure, does not destroy the integrality of original structure, calculating process is in three-dimensional
Space is completed, and load counting is easy to, and calculating process is visual in image, and programming automation operation can be improved hydraulic structure and stablize
The efficiency and accuracy of calculating.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (5)
1. a kind of three-dimensional stability calculation method of hydraulic structure, which is characterized in that the calculation method includes:
The three-dimensional geometry entity of equal proportion modeling creation hydraulic structure；
According to the practical load assignment born of the hydraulic structure, the load assignment body in addition to dead load, the lotus are created
Carrying distribution body is to be distributed consistent virtual three-dimensional entity with actual loading；
Additional data is assigned respectively to the three-dimensional geometry entity and load assignment body, the additional data is non-geometric attribute,
The additional data includes material bulk density, load direction and load type；
The sliding surface for specifying the hydraulic structure obtains the sliding surface information, and the sliding surface information includes sliding surface
Geometry and physical data；
According to the three-dimensional geometry entity, the load assignment body, the additional data and the sliding surface information, to the water
The load of work building carries out statistics and summarizes calculating, obtains sliding force and skid resistance, and the hydraulic structure edge is calculated and refers to
The buckling safety factor of the fixed sliding surface.
2. a kind of three-dimensional stability calculation method of hydraulic structure according to claim 1, it is characterised in that: the three-dimensional
Geometry entity is created by AutoCAD or Microstation 3 d modeling software.
3. a kind of three-dimensional stability calculation method of hydraulic structure according to claim 1, it is characterised in that: the load
Type includes water pressure, soil pressure, uplift pressure and dead load.
4. a kind of three-dimensional stability calculation method of hydraulic structure according to claim 1, it is characterised in that: the sliding
The geometry and physical data in face include position, size, centroid and the coefficient of friction being attached on the sliding surface of sliding surface.
5. a kind of three-dimensional stability calculation method of hydraulic structure according to claim 1, it is characterised in that:
The three-dimensional geometry entity determines that each load is big multiplied by corresponding material bulk density respectively with the volume of the load assignment body
It is small；
The Impact direction of the three-dimensional geometry entity and the load assignment body determines each load direction respectively；
The centroid of the three-dimensional geometry entity and the load assignment body determines each load point respectively；
Each load resultant force merger is carried out according to the modeling change in coordinate axis direction of the three-dimensional geometry entity.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112989450A (en) * | 2021-03-30 | 2021-06-18 | 中交水运规划设计院有限公司 | Method and device for generating pile foundation model |
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| CN103469780A (en) * | 2013-09-24 | 2013-12-25 | 昆明理工大学 | Method of calculating deep antiskid stable critical slipping plane of dam foundation of gravity dam |
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| CN103469780A (en) * | 2013-09-24 | 2013-12-25 | 昆明理工大学 | Method of calculating deep antiskid stable critical slipping plane of dam foundation of gravity dam |
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| CN112989450A (en) * | 2021-03-30 | 2021-06-18 | 中交水运规划设计院有限公司 | Method and device for generating pile foundation model |
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