CN107945264A - Roadbed three-dimensional modeling method - Google Patents
Roadbed three-dimensional modeling method Download PDFInfo
- Publication number
- CN107945264A CN107945264A CN201711143740.0A CN201711143740A CN107945264A CN 107945264 A CN107945264 A CN 107945264A CN 201711143740 A CN201711143740 A CN 201711143740A CN 107945264 A CN107945264 A CN 107945264A
- Authority
- CN
- China
- Prior art keywords
- roadbed
- point
- line
- shoulder line
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
Abstract
The invention discloses a kind of railway bed three-dimensional modeling method, including：S1：Railway bed modeling basic data prepares；S2：Determine left shoulder L1 sides embankment, cutting separation；S3：Judge paragraph point0 to point1 roadbed forms；S4：Fixed corresponding roadbed standard cross-section；S5：Scan adult；S6：Boolean calculation adult；S7：Complete all paragraph roadbed models in L1 sides；S8：Complete right wing shoulder line L2 sides roadbed model；S9：Delete L1, L2, embankment, cutting standard cross-section and dimensional topography face M；S10：Obtain railway bed threedimensional model.The present invention by certain regular partition roadbed paragraph, scans standard subgrade cross section generation entity, entity obtains the roadbed body being bonded with landform through Boolean calculation according to high-precision three-dimensional landform and shoulder line in corresponding paragraph.Modeling efficiency is high；Extra manual measurement work is avoided, quantities calculation is accurate.
Description
Technical field
The present invention relates to subgrade engineering modeling technique field, more particularly to a kind of railway bed three-dimensional modeling method.
Background technology
Railway bed three-dimensional modeling is to use computer technology, under three-dimensional environment, by roadbed information and visualization tool
With reference to the technology for roadbed research.The technology can by railway two-dimensional design result 3-D graphic it is visual in image show
Coming, people can propose opinion by intuitively 3-D graphic to designing scheme, and it is convenient to be provided for each professional cooperation, while
Relatively reliable decision-making foundation is provided for programme review personnel and decision of the senior level person.
Traditional railway roadbed three-dimensional modeling is used builds three-dimensional roadbed model method based on two-dimensional design cross section.It is this to set
Meter method can be regarded as the method for section, i.e. one section of general every 20~50 meters of actual measurements, and artificial or program is drawn on measured profile
Two-dimentional roadbed model, if the roadbed form in adjacent cross section is identical, roadbed model point-to-point correspondence in cross section is connected and builds road
Matrix, artificially by model, a certain position disconnects between two sections if roadbed form difference.The precision of threedimensional model depends on real
Survey the density degree in cross section, but roadbed situation is unable to accurate description between cross section, design a model and the combination of terrain surface not
Can accurately it express, the calculating of engineering quantity is not accurate enough；Since the design of model must be measured in advance based on each cross section, therefore
Cannot meet the needs of BIM is for Top-Down Design.
Traditional railway roadbed three-dimensional modeling method is subject to a degree of restriction, is mainly shown as in terms of engineer application：
First, it is linear connected between tradition modeling cross section and two neighboring cross section, and the fitting journey of actual landform
Degree depends on the accuracy that survey crew measures ground line at cross section, also depends on the fluctuating journey of landform between two cross sections
Degree.Cross-section interplanar distance is closeer, more closing to reality landform, and precision is higher, but also increases the workload of survey crew, cost at the same time
It is higher.
Second, roadbed includes embankment and cutting, and in conventional three dimensional design, the boundary mileage of embankment cutting is usually to lean on experience
Estimation, it is impossible to which the true boundary of Accurate Determining embankment cutting, this will result in sets unreasonable, work in boundary engineering measure
Number of passes gauge is not calculated accurately really.
3rd, conventional three-dimensional design, since each cross section that the design of model is based on must give in advance, therefore in the past
Three dimensional design be only capable of carrying out overmolded design, can not meet the demand of the three-dimensional roadbed Top-Down Design based on initial land form.
The content of the invention
For the deficiency of traditional railway roadbed three-dimensional modeling method, the present invention proposes a kind of brand-new three-dimensional roadbed modeling
Method.The deficiency of traditional railway roadbed three-dimensional modeling method：The precision of model is influenced by actual measurement cross section density degree, to
Improving precision need to be multiplied engineering survey cost, and roadbed form needs designer is empirically determined to cause that measure is unreasonable, engineering
Gauge is not calculated accurately really, simultaneously because the limitation in cross section can not be broken away from, it is impossible to directly carries out the work of roadbed three-dimensional Top-Down Design.Mirror
In this, the present invention determines accurate point of embankment and cutting by three-dimensional high-precision aerial survey landform using known roadbed shoulder line
Boundary, entity, entity and landform are drawn between adjacent separation by the general cross-sectional form figure of corresponding roadbed according to rule
Curved surface carries out computing and draws stretch base threedimensional model；Simultaneously as the regularity of separation and standard cross-section form, can lead to
Cross program and repeat above procedure until completing the design of whole section of roadbed threedimensional model, realize the quick design of roadbed.
A kind of roadbed three-dimensional modeling method according to the present invention, it is characterised in that this method comprises the following steps：
S1：Railway bed modeling basic data prepares；
Known dimensional topography face M, left shoulder line L1 and right wing shoulder line L2, and the road with layering and 100m high slopes
Dike, cutting standard cross-section, L1 and L2 are projected on X/Y plane and obtain projection line L3 and L4；Wherein, dimensional topography face S1 by
Aerial survey cloud data generates；L1, L2 are spatially to offset downward rule according to embankment, cutting cross-sectional form based on line midline
Positioning, which moves, to be obtained, and wherein regulation displacement is calculated by building height and shoulder width on railway；Roadbed standard cross-section is according to road
The general drawing of base obtains；
S2：Determine left shoulder L1 sides embankment, cutting separation；
Left shoulder line L1 is selected, the beginning and end of shoulder line is determined along left shoulder direction, starting point is denoted as POINT0, curb
Line L1 is found intersection with dimensional topography face M, and record intersection point number is n, and L1 terminals are denoted as POINT (n+1), is judged：If n=0, directly
Step S3 is connected to, if n is not equal to 0, intersection point is prolonged into shoulder line direction and is named as POINT1, POINT2 successively ... POINT
(n)；Wherein, left shoulder direction refers to the direction that fair line Lu Cong little mileages are directed toward big mileage, and POINT0 is the small mileage end endpoints of L1,
POINT (n+1) is the big mileage end endpoints of L1；POINT1, POINT2 ... POINTn are embankment, cutting separation, and L1 is divided
For n+1 paragraph；
S3：Judge paragraph point0 to point1 roadbed forms；Tool
POINT0 is projected on landform face to Z-direction, obtains subpoint 0POINT, the z for comparing POINT0 and 0POINT is sat
Z1 and z2 is marked, if z1 is more than z2, is judged as embankment, z1 is judged as cutting, and recording parameters i=1 less than z2；
S4：Fixed corresponding roadbed standard cross-section；
With reference to the general drawing of roadbed with 1:1 ratio draws embankment, cutting standard cross-section, and the cross section of drafting was placed in
Point POINT (i-1) and in the plane of L1, the curb point in cross section is overlapped with point POINT (i-1), and cross section is former to hang down
Straight symmetry axis extended line crosses line midline；
S5：Scan adult；
Using each closing frame in roadbed standard cross-section as profile, scanned along L1 from paragraph POINT (i-1) to POINT (i)
Generate each obturator；
S6：Boolean calculation adult；
Scan body and the dimensional topography face M that are generated in step 5 are carried out Boolean calculation and obtain stretch basic mode type；
S7：Complete all paragraph roadbed models in L1 sides；
1) size of the i in comparison step 2 and n+1, i.e. comparison loop number and the size of paragraph number；
If 2) i<N+1, shows that L1 sides also have roadbed model to need to add, and determines that paragraph POINT (i) arrives POINT (i+1)
Roadbed form：This paragraph is cutting if the preceding paragraph falls to be determined as embankment, if it is embankment that the preceding paragraph, which falls this paragraph for cutting,；
A=i+1 is made, then assigns the value of A to i, i.e. i=A；Repeat step 4, step 5, step 6, step 7；
If 3) i >=n+1, to next step S8；
S8：Complete right wing shoulder line L2 sides roadbed model；
Right wing shoulder line L2 sides roadbed model is established with reference to the roadbed model method for building up of left shoulder line L1；Wherein, right wing
Shoulder direction refers to the direction that fair line Lu Cong great mileages are directed toward small mileage, and POINT0 is the big mileage end endpoints of L2, and POINT (n+1) is L2
Small mileage end endpoint；Other steps are the same as L1 sides roadbed modeling procedure；
S9：Delete L1, L2, embankment, cutting standard cross-section and dimensional topography face M；
S10, obtain railway bed threedimensional model.
Further：The railway bed is the symmetrical railway bed of roadbed standard cross-section.
The present invention has the advantages and positive effects of：
(1) present invention can complete the modeling to general subgrade, form continuous roadbed model, model is closely pasted with landform
Close, model accuracy is high, and engineering quantity statistics is accurate.
(2) present invention divides embankment cutting boundary position accurate, avoids the engineering measure that manual delimitation brings and sets
Unreasonable, engineering quantity calculates the defects of inaccurate.
(3) as long as initial data of the invention is complete can to carry out the design of roadbed three-dimensional modeling, departing from cross-section to construction drawing
The dependence in face, available for roadbed three-dimensional Top-Down Design.
(4) logic of the present invention is clear and definite, and programmable, further lifts design efficiency.
Brief description of the drawings
Fig. 1 is the flow chart of the preferred embodiment of the present invention；
Fig. 2 is the embankment of the preferred embodiment of the present invention, cutting separation arrangement schematic diagram；
Fig. 3 is the embankment of the preferred embodiment of the present invention, cutting standard cross-section schematic diagram；
Embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Describe in detail as follows：
Please refer to Fig.1, Fig. 2 and Fig. 3, a kind of railway bed three-dimensional modeling method, includes the following steps：
S1：Railway bed modeling basic data prepares；
Known dimensional topography face M, left shoulder line L1 and right wing shoulder line L2, and the road with layering and 100m high slopes
Dike, cutting standard cross-section, L1 and L2 are projected on X/Y plane and obtain projection line L3 and L4；Wherein, dimensional topography face S1 by
Aerial survey cloud data generates；L1, L2 are spatially to offset downward rule according to embankment, cutting cross-sectional form based on line midline
Positioning, which moves, to be obtained, and wherein regulation displacement is calculated by building height and shoulder width on railway；Roadbed standard cross-section is according to road
The general drawing of base obtains；
S2：Determine left shoulder L1 sides embankment, cutting separation；
Left shoulder line L1 is selected, the beginning and end of shoulder line is determined along left shoulder direction K1, starting point is denoted as POINT0, road
Shoulder line L1 is found intersection with dimensional topography face M, and record intersection point number is n, and L1 terminals are denoted as POINT (n+1), is judged：If n=0,
Step S3 is directly arrived, if n is not equal to 0, intersection point is prolonged into shoulder line direction and is named as POINT1, POINT2 successively ... POINT
(n)；Wherein, left shoulder direction refers to the direction that fair line Lu Cong little mileages are directed toward big mileage, and the left side in Fig. 2 is small mileage, right side
For big mileage, POINT0 is the small mileage end endpoints of L1, and POINT (n+1) is the big mileage end endpoints of L1；POINT1、POINT2……
POINTn is embankment, cutting separation, and L1 is divided into n+1 paragraph；
S3：Judge paragraph point0 to point1 roadbed forms；Specially：
POINT0 is projected on landform face to Z-direction, obtains subpoint 0POINT, the z for comparing POINT0 and 0POINT is sat
Z1 and z2 is marked, if z1 is more than z2, is judged as embankment, z1 is judged as cutting, and recording parameters i=1 less than z2；
S4：Fixed corresponding roadbed standard cross-section；
With reference to the general drawing of roadbed with 1:1 ratio draws embankment, cutting standard cross-section, and the cross section of drafting was placed in
Point POINT (i-1) and in the plane of L1, the curb point in cross section is overlapped with point POINT (i-1), and cross section is former to hang down
Straight symmetry axis extended line crosses line midline；
P in Fig. 3 is curb point；Left-hand component is the form in railway bed embankment cross section, and right-hand component is railway road
Base cutting cross-sectional form；
S5：Scan adult；
Using each closing frame in roadbed standard cross-section as profile, scanned along L1 from paragraph POINT (i-1) to POINT (i)
Generate each obturator；
S6：Boolean calculation adult；
Scan body and the dimensional topography face M that are generated in step 5 are carried out Boolean calculation and obtain stretch basic mode type；
S7：Complete all paragraph roadbed models in L1 sides；
1) size of the i in comparison step 2 and n+1, i.e. comparison loop number and the size of paragraph number；
If 2) i<N+1, shows that L1 sides also have roadbed model to need to add, and determines that paragraph POINT (i) arrives POINT (i+1)
Roadbed form：This paragraph is cutting if the preceding paragraph falls to be determined as embankment, if it is embankment that the preceding paragraph, which falls this paragraph for cutting,；
A=i+1 is made, then assigns the value of A to i, i.e. i=A；Repeat step 4, step 5, step 6, step 7；
If 3) i >=n+1, to next step S8；
S8：Complete right wing shoulder line L2 sides roadbed model；
Right wing shoulder line L2 sides roadbed model is established with reference to the roadbed model method for building up of left shoulder line L1；Wherein, right wing
Shoulder direction K2 refers to the direction that fair line Lu Cong great mileages are directed toward small mileage, and POINT0 is the big mileage end endpoints of L2, and POINT (n+1) is
The small mileage end endpoints of L2；Other steps are the same as L1 sides roadbed modeling procedure；
S9：Delete L1, L2, embankment, cutting standard cross-section and dimensional topography face M；
S10：Obtain railway bed threedimensional model.
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention,
It should not be construed as limiting the practical range of the present invention.Any changes and modifications in accordance with the scope of the present application,
Should all still it belong within the patent covering scope of the present invention.
Claims (2)
- A kind of 1. railway bed three-dimensional modeling method, it is characterised in that：Include the following steps：S1, railway bed modeling basic data prepare, and are known dimensional topography face M, left shoulder line L1 and right wing shoulder line L2, And embankment, cutting standard cross-section with layering and 100m high slopes, left shoulder line L1 and right wing shoulder line L2 are put down in XY Projection obtains projection line L3 and projection line L4 on face；Wherein, dimensional topography face S1 is generated by aerial survey cloud data；Left shoulder line L1, right wing shoulder line L2 are spatially to be offset downward regulation displacement according to embankment, cutting cross-sectional form based on line midline and obtained , wherein regulation displacement is calculated by building height and shoulder width on railway；Roadbed standard cross-section is according to roadbed standard drawing Paper obtains；S2, the definite left shoulder L1 sides embankment, cutting separation, are selection left shoulder line L1, are determined along left shoulder direction The beginning and end of shoulder line, starting point are denoted as POINT0, and shoulder line L1 is found intersection with dimensional topography face M, and record intersection point number is n, Left shoulder line L1 terminals are denoted as POINT (n+1), are judged：If n=0, step S3 is directly arrived, if n is not equal to 0, by intersection point POINT1, POINT2 is named as successively and prolongs shoulder line direction ... POINT (n)；Wherein, left shoulder direction refers in fair line Lu Cong little The direction of the big mileages of Cheng Zhixiang, POINT0 are the small mileage end endpoints of left shoulder line L1, and POINT (n+1) is in left shoulder line L1 big Cheng Duan endpoints；POINT1, POINT2 ... POINTn are embankment, cutting separation, and left shoulder line L1 is divided into n+1 section Fall；S3, judgement paragraph point0 to the point1 roadbed forms, are to project to POINT0 on landform face to Z-direction, obtain Subpoint 0POINT, compares the z coordinate z1 and z2 of POINT0 and 0POINT, if z1 is more than z2, is judged as embankment, z1 is less than z2 It is judged as cutting, and recording parameters i=1；S4, the corresponding roadbed standard cross-section of the fixation, are with 1 with reference to the general drawing of roadbed:1 ratio draws embankment, cutting Standard cross-section, was placed in point POINT (i-1) and in the plane of L1, the curb in cross section by the cross section of drafting Point is overlapped with point POINT (i-1), and cross section original vertical axis of symmetry extended line crosses line midline；S5, it is described scan adult, be using each closing frame in roadbed standard cross-section as profile, along left shoulder line L1 from paragraph POINT (i-1) to POINT (i) scans each obturator of generation；S6, the Boolean calculation adult, are that scan body and the dimensional topography face M that will be generated in step S5 carry out Boolean calculation and obtain Stretch basic mode type；S7, all paragraph roadbed models in the completion left shoulder line L1 sides, include herein below：1) size of the i in comparison step S2 and n+1, i.e. comparison loop number and the size of paragraph number；If 2) i<N+1, shows that left shoulder line L1 sides also have roadbed model to need to add, determines that paragraph POINT (i) arrives POINT (i+1) roadbed form：This paragraph is cutting if the preceding paragraph falls to be determined as embankment, is if the preceding paragraph falls this paragraph for cutting Embankment；A=i+1 is made, then assigns the value of A to i, i.e. i=A；Repeat step 4, step 5, step 6, step 7；If 3) i >=n+1, to next step S8；S8, completion right wing shoulder line L2 sides roadbed model, are the roadbed model method for building up foundation with reference to left shoulder line L1 Right wing shoulder line L2 sides roadbed model；Wherein, right wing shoulder direction refers to the direction that fair line Lu Cong great mileages are directed toward small mileage, POINT0 For the big mileage end endpoints of right wing shoulder line L2, POINT (n+1) is the small mileage end endpoints of right wing shoulder line L2；Other steps are the same as left shoulder Line L1 sides roadbed modeling procedure.
- A kind of 2. railway bed three-dimensional modeling method according to claim 1, it is characterised in that：The railway bed is roadbed The symmetrical railway of standard cross-section or highway subgrade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143740.0A CN107945264B (en) | 2017-11-17 | 2017-11-17 | Three-dimensional modeling method for roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143740.0A CN107945264B (en) | 2017-11-17 | 2017-11-17 | Three-dimensional modeling method for roadbed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107945264A true CN107945264A (en) | 2018-04-20 |
| CN107945264B CN107945264B (en) | 2020-12-29 |
Family
ID=61932718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711143740.0A Active CN107945264B (en) | 2017-11-17 | 2017-11-17 | Three-dimensional modeling method for roadbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107945264B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109241597A (en) * | 2018-08-24 | 2019-01-18 | 中国铁路设计集团有限公司 | Closed cutting BIM model implementation method and information data processing terminal |
| CN110472323A (en) * | 2019-08-01 | 2019-11-19 | 广联达科技股份有限公司 | Ramp 3 D model construction method, device and electronic equipment |
| CN111368437A (en) * | 2020-03-05 | 2020-07-03 | 中铁二院工程集团有限责任公司 | Railway roadbed engineering design method based on BIM technology |
| CN112580134A (en) * | 2020-12-10 | 2021-03-30 | 中铁第四勘察设计院集团有限公司 | Design method, device, equipment and storage medium for roadbed engineering |
| CN113094802A (en) * | 2021-04-30 | 2021-07-09 | 中国电建集团中南勘测设计研究院有限公司 | Highway subgrade modeling method and system |
| CN113204813A (en) * | 2021-04-01 | 2021-08-03 | 安徽省交通规划设计研究总院股份有限公司 | Correction method for surface cleaning and leveling of original three-dimensional ground surface in roadbed engineering |
| CN114892688A (en) * | 2022-05-13 | 2022-08-12 | 中铁二院工程集团有限责任公司 | Three-dimensional design method and system for side slope anchor rod frame beam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991011558A1 (en) * | 1990-02-02 | 1991-08-08 | Pavital Engineering S.P.A. | Method for consolidating railway roadbeds in general and apparatus for implementing the method |
| CN105138788A (en) * | 2015-09-06 | 2015-12-09 | 长江勘测规划设计研究有限责任公司 | Full-parameterization establishing method for road three-dimensional model |
| CN105279792A (en) * | 2015-10-13 | 2016-01-27 | 铁道第三勘察设计院集团有限公司 | Railway roadbed draining BIM design method based on curved surface of landform |
| CN105354370A (en) * | 2015-10-21 | 2016-02-24 | 河海大学 | Three-dimensional finite element calculation method for shakedown analysis of multi-layer railway roadbed structure |
| CN106522192A (en) * | 2016-12-07 | 2017-03-22 | 中国铁道科学研究院 | Soil body reinforcement fiber, roadbed and roadbed construction method |
-
2017
- 2017-11-17 CN CN201711143740.0A patent/CN107945264B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991011558A1 (en) * | 1990-02-02 | 1991-08-08 | Pavital Engineering S.P.A. | Method for consolidating railway roadbeds in general and apparatus for implementing the method |
| CN105138788A (en) * | 2015-09-06 | 2015-12-09 | 长江勘测规划设计研究有限责任公司 | Full-parameterization establishing method for road three-dimensional model |
| CN105279792A (en) * | 2015-10-13 | 2016-01-27 | 铁道第三勘察设计院集团有限公司 | Railway roadbed draining BIM design method based on curved surface of landform |
| CN105354370A (en) * | 2015-10-21 | 2016-02-24 | 河海大学 | Three-dimensional finite element calculation method for shakedown analysis of multi-layer railway roadbed structure |
| CN106522192A (en) * | 2016-12-07 | 2017-03-22 | 中国铁道科学研究院 | Soil body reinforcement fiber, roadbed and roadbed construction method |
Non-Patent Citations (1)
| Title |
|---|
| 王明生 等: ""基于GIS的铁路路基三维可视化技术研究"", 《工程图学学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109241597A (en) * | 2018-08-24 | 2019-01-18 | 中国铁路设计集团有限公司 | Closed cutting BIM model implementation method and information data processing terminal |
| CN110472323A (en) * | 2019-08-01 | 2019-11-19 | 广联达科技股份有限公司 | Ramp 3 D model construction method, device and electronic equipment |
| CN111368437A (en) * | 2020-03-05 | 2020-07-03 | 中铁二院工程集团有限责任公司 | Railway roadbed engineering design method based on BIM technology |
| CN112580134A (en) * | 2020-12-10 | 2021-03-30 | 中铁第四勘察设计院集团有限公司 | Design method, device, equipment and storage medium for roadbed engineering |
| CN112580134B (en) * | 2020-12-10 | 2022-05-13 | 中铁第四勘察设计院集团有限公司 | Design method, device, equipment and storage medium for roadbed engineering |
| CN113204813A (en) * | 2021-04-01 | 2021-08-03 | 安徽省交通规划设计研究总院股份有限公司 | Correction method for surface cleaning and leveling of original three-dimensional ground surface in roadbed engineering |
| CN113204813B (en) * | 2021-04-01 | 2023-10-17 | 安徽省交通规划设计研究总院股份有限公司 | Correction method for clearing and leveling original three-dimensional terrain surface in roadbed engineering |
| CN113094802A (en) * | 2021-04-30 | 2021-07-09 | 中国电建集团中南勘测设计研究院有限公司 | Highway subgrade modeling method and system |
| CN114892688A (en) * | 2022-05-13 | 2022-08-12 | 中铁二院工程集团有限责任公司 | Three-dimensional design method and system for side slope anchor rod frame beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107945264B (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107945264A (en) | Roadbed three-dimensional modeling method | |
| CN106227923B (en) | A kind of rock mass discontinuity three-dimensional roughness evaluation method | |
| CN103759677B (en) | Based on the method for triangle area ratio law amount rock mass discontinuity three-dimensional roughness | |
| CN113587835A (en) | Method for checking and accepting bridge engineering quality by using three-dimensional laser scanning technology | |
| CN107796325B (en) | A kind of measurement method and measuring system of pavement texture construction depth | |
| CN101707026A (en) | Combined optimization method for simplifying digital map linear factors | |
| CN103345542B (en) | A kind of bridge defect labeling method based on three-dimensional visualization technique | |
| CN101872376A (en) | True three-dimensional road intelligent design method and system | |
| CN113362469B (en) | Shield tunnel construction early warning method integrating city building information and stratum structure | |
| CN101154295A (en) | Three-dimensional simulation electronic chart of navigation channel | |
| CN110490888A (en) | Freeway geometry Characteristic Vectors based on airborne laser point cloud quantify extracting method | |
| CN108682043A (en) | A kind of complex-curved measure planning method based on parameter mapping | |
| CN109191581A (en) | A kind of Earth Volume of Road Engineering amount high-resolution method based on BIM technology | |
| CN107700280B (en) | Existing double railway lines line position reconstructing method | |
| CN109444350A (en) | A kind of layout method of the atmosphere pollution monitoring sensor based on unmanned plane | |
| CN103344297B (en) | The reservoir storage survey method of underground water seal cave depot | |
| CN107944203A (en) | A kind of visual architectural design method of wind-velocity streamline | |
| CN107657636A (en) | A kind of method that route topography figure elevational point is automatically extracted based on mobile lidar data | |
| CN106777917A (en) | Hydraulic structure is calculated maritime affairs traffic control radar shaded areas and influence evaluation method | |
| CN110457749A (en) | A kind of Earth Volume of Road Engineering amount information processing method and system based on BIM technology | |
| CN101929858A (en) | Precise surveying and mapping method of 0.25m contour interval of flat ground with large scale of 1:500 to 1:200 | |
| CN102661742B (en) | Self-adaptive mark point layout method based on curvature characteristic weighting centroid point constraint | |
| CN109059821A (en) | Coordinate measuring machine measurement path planning method | |
| CN101210814A (en) | Line engineering GPS control network height fitting method | |
| CN106023311B (en) | Improve the method that dimensional topography generates precision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |