CN101942805B - Three-dimensional numerical control method for bridge section precasting technology - Google Patents
Three-dimensional numerical control method for bridge section precasting technology Download PDFInfo
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Abstract
The invention discloses a three-dimensional numerical control method for a bridge section precasting technology, which comprises the following steps: dividing the bridge into sections; calculating the global coordinates of the section boundary control point and the geometric dimensions of each section; inputting the axial compression value and camber of the sections, correcting the global coordinates of the section boundary control point, and calculating new coordinates; calculating the three-dimensional coordinate transition matrix of any point of the adjacent sections; calculating manufacturing errors of the sections and adjustment quantities of the adjacent sections in six directions; calculating the three-dimensional coordinate transition matrix of any point of the adjacent sections after considering the section manufacturing errors; judging whether the beam surface is twisted according to the manufacturing errors of the sections; and according to the three-dimensional coordinate transition matrix of any point of the adjacent sections after considering the section manufacturing errors, outputting the theoretical calculation values of the matching coordinates of the initial section locating point, and the theoretical calculation values of the section dimensions. The invention realizes three-dimensional control on the geometric line shapes of the bridge sections, and reduces the manufacturing errors caused by the separate control on plane and facade line shapes.
Description
Technical field
The present invention relates to bridge short-term method precast segment technology, particularly the three-dimension numerical controlled method of bridge subsection prefabricating technique.
Background technology
Short-term method precast segment technology is that bridge superstructure is divided into some short segments; After the whole coordinate conversion of the one-tenth bridge of considering factors such as concrete shrinkage and creep and camber is prefabricated factory local coordinate; In the fixed form system of prefabricated plant equipment, pursue the construction technology of striding coupling, flowing water precast bridge sections; Its process is the interactive operation of user and program; Coordinate after program needs the user to import bridge to make and physical dimension are used for calculating the control information of adjacent segment as input value.Prestressed Concrete Bridges precast segment technology is the Bridge Design manufacturing technology that the world is most advanced, meet environmental protection concept most; But three companies that have only the U.S., Austria, Hong Kong at present have Prestressed Concrete Bridges short-term method precast segment control technology and software; Domestic construction project such as desire are used short-term method precast segment construction then must introduce external software and are made and set up, and consider all to have very big limitation from technology and economic angle.
The algorithm of present precast segment control technology software is to horizontal alignment and facade is linear controls respectively; Adopt coordinate plane transfer pair geometry linear to control; Adopt two-dimentional method for correcting error that the precast segment error is adjusted; This algorithm is easy to generate the very big error of calculation under the linear condition of big longitudinal gradient or big curve, construction precision and construction quality can't be guaranteed.In addition, present above-mentioned algorithm also has following weak point: can only realize that 1, sections makes Construction control, and fail to realize design, make, set up control integrated; 2, the judgement and the alarm mechanism of measurement data and linear error are not set, are difficult to the personal error of in-site measurement is made judgement and control; 3, the remote database access function is not set, real-time update that can't fulfillment database.
Summary of the invention
The shortcoming that the objective of the invention is to overcome prior art is with not enough; Provide the bridge subsection prefabricating technique three-dimension numerical controlled method; Realized three-dimensional control, reduced the linear foozle that separately control algolithm caused of horizontal alignment and facade the bridge subsection geometry linear.
The object of the invention is realized through following technical proposals: the three-dimension numerical controlled method of this bridge subsection prefabricating technique may further comprise the steps:
The linear and span of bridge under S1, the input global coordinate system, and the physical dimension of setting bridge subsection;
S2, bridge is carried out sections divide, bridge is divided into n sections;
The coordinate of reference mark, three sections separatrix under global coordinate system and the physical dimension of each sections on S3, the calculating bridge subsection separatrix;
The axial compression value and the camber of S4, input bridge subsection;
S5, the axial compression value and the camber that adopt step S4 to be imported are revised at the coordinate under the global coordinate system the reference mark, sections separatrix that step S3 is calculated; Calculate and considered axial compression value and the camber new coordinate of reference mark, sections separatrix under global coordinate system afterwards, and with its output;
S6, the new coordinate of reference mark, sections separatrix under global coordinate system that calculates according to step S5 are set up the local coordinate system of each beam sections face; According to the vector of each sections local coordinate system coordinate axis, calculate the adjacent segment three-dimensional coordinate transition matrix of any arbitrarily, and calculate any some three-dimensional coordinate transition matrix under global coordinate system in the sections local coordinate system;
S7, the physical dimension that sections is divided and step S3 obtains that obtains according to step S2 are calculated the coordinate of the 1st sections anchor point under local coordinate system and the calculated value of segment sizes, and are exported;
S8, the input coordinate of the 1st sections anchor point under local coordinate system and the actual measured value of segment sizes;
The actual measured value that S9, the calculated value that is calculated according to step S7 and step S8 are imported is calculated the six direction adjustment amount of sections foozle and adjacent segment; Based on the vector of six direction adjustment amount at local coordinate system; Adopt initial sections foozle to adjacent segment arbitrarily any three-dimensional coordinate transition matrix revise, calculate the adjacent segment considered after the sections foozle three-dimensional coordinate transition matrix of any arbitrarily;
S10, according to the sections foozle that step S9 calculates, judge whether the beam face reverses, whether the actual measured value of reminding customer inspection step S8 to be imported wrong, and the prompting user judges whether the sections foozle excessive;
S11, the consideration of calculating according to step S9 the three-dimensional coordinate transition matrix of any arbitrarily of the adjacent segment after the sections foozle, export the coupling coordinate calculated value and the segment sizes calculated value of initial sections anchor point;
S12, circulation step S7-11 are until n sections of bridge.
The present invention has following advantage and effect with respect to prior art:
1, realized three-dimensional control based on three-dimensional coordinate conversion method, significantly reduced the linear foozle that separately control algolithm caused of horizontal alignment and facade the bridge subsection geometry linear.
2, can divide sections to bridge according to Bridge Design gauge and user definition, thereby realize the integrated control that the bridge geometry linear designs, makes, sets up, further guarantee construction quality.In addition, adopt three-dimensional method for correcting error that the precast segment error is adjusted, promptly precast segment is carried out the error adjustment at the six direction that comprises rotation, translation, greatly reduce the deviation of precast segment.
3, add measurement data and linear error warning function, under situation that obvious deviation appears in obvious input error and linear takes place measurement data, the user has been sent miscue, avoided personal error that construction quality is impacted.
4,, thereby make the present invention also have following advantage owing to used three layers of software architecture:
A) logic connects physical separation.After having adopted three-tier architecture; User, web server and database server three both can move on same computer; Also can be in respectively by on the various computing machine/server on the network of physical connection, be convenient to manage respectively and safeguard, it is stable to help data security.
B) data reusing, unique, can share.Because real data is only preserved unique portion on database server, all use the user of native systems will obtain same piece of data, and after user's modification, visible to all with per family.Realize the real-time update of data, guaranteed the true and accurate of data.
C) system can be provided with access rights.Can be provided with read-only, can revise and authority such as disable access, guaranteed the safety and stability of system.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is the synoptic diagram at " reference mark, bridge subsection separatrix " according to the invention;
Fig. 3 is a software design Organization Chart of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but embodiment of the present invention is not limited thereto.
Embodiment
The present invention is the three-dimension numerical controlled method of bridge subsection prefabricating technique, and its algorithm flow is as shown in Figure 1, may further comprise the steps:
1, the user imports the linear and span of bridge under the global coordinate system, and sets the physical dimension of bridge subsection.Wherein, the linear fingerboard face of bridge outer contour, span refers to the plan range of adjacent bridge pier centreline space.
2, bridge is carried out sections and divide, bridge is divided into n sections.
3, calculate coordinate (abbreviating whole coordinate as) and the physical dimension of each sections under global coordinate system of reference mark, three sections separatrix on the bridge subsection separatrix.As shown in Figure 2, three sections separatrix reference mark fingerboard face center line and the marginal intersection point of sections (promptly putting 2) on the bridge subsection separatrix, and range points 2 is two points (promptly put 1 with point 3) of fixed range on the sections separatrix.In theory, fixed range is any number less than bridge deck width; In the practical application, get a certain fixed numbers according to this project bridge deck width, engineering experience is generally got 2.5 meters.
4, the user imports the axial compression value and the camber of bridge subsection.Camber refers to for offsetting the distortion that bridge produces under load action, and at the correcting value opposite with deformation direction of constructing or being reserved during manufacturing.Axial compression value that the user imported and camber can be calculated by the professional structure analysis software.
5, the axial compression value and the camber that adopt step 4 to import are revised at the coordinate under the global coordinate system the reference mark, sections separatrix that step 3 calculated; Calculate and considered axial compression value and the camber new coordinate of reference mark, sections separatrix under global coordinate system afterwards, and with its output.
Step 1-5 makes the present invention have bridge geometry linear design function, realizes the linear design of bridge, makes, sets up integrated control; According to user right, can make amendment simultaneously, realize the real-time update in unique data storehouse database.
6, the new coordinate of reference mark, sections separatrix under global coordinate system that calculates according to step 5 set up the local coordinate system of each beam sections face; Vector according to each sections local coordinate system coordinate axis; Calculate the relativeness (being the adjacent segment three-dimensional coordinate transition matrix of any arbitrarily) of adjacent segment local coordinate system, and calculate the relativeness (being any some three-dimensional coordinate transition matrix under global coordinate system in the sections local coordinate system) of sections local coordinate system and global coordinate system.Step 6 has realized the three-dimensional control of bridge geometry linear.
7, the physical dimension that sections is divided and step 3 obtains that obtains according to step 2 is calculated initial sections (i.e. the 1st sections) coordinate of anchor point under local coordinate system and the calculated value of segment sizes, and output.In the present embodiment, said initial sections anchor point is chosen any six points on the beam face.
8, the user imports coordinate (abbreviate local coordinate) and the actual measured value of segment sizes of initial sections (i.e. the 1st sections) anchor point under local coordinate system.
9, the actual measured value that calculated value that calculates according to step 7 and step 8 are imported is calculated six direction (D translation and the three-dimensional rotation) adjustment amount of sections foozle (being the actual measured value of initial sections anchor point coordinate and size and the difference of calculated value) and adjacent segment; Based on the vector of six direction adjustment amount at local coordinate system; Adopt initial sections foozle to adjacent segment arbitrarily any three-dimensional coordinate transition matrix revise, calculate the adjacent segment considered after the sections foozle three-dimensional coordinate transition matrix of any arbitrarily.
10, the sections foozle of calculating according to step 9 judges whether the beam face reverses, and whether the actual measured value of reminding customer inspection step 8 to be imported is wrong, and reminds the user to judge whether the sections foozle is excessive.
The consideration of 11, calculating according to step 9 the three-dimensional coordinate transition matrix of any arbitrarily of the adjacent segment after the sections foozle, export the coupling coordinate calculated value and the segment sizes calculated value of initial sections anchor point.
Step 9 can realize the three-dimensional adjustment to the sections foozle.Automatic prompt facility when step 10 realization sections foozle is excessive has avoided the people to be input error effectively.Step 7-11 makes the user with database update authority real-time update to import data; And the read-only and user disable access authority then can't change database, and the safety that has guaranteed database is with stable.
12, circulation step 7-11 is until n sections of bridge.
In practical application, during the embodiment of the present invention method, its software program can adopt the most classical three layers of software architecture of standard in the web exploitation, is made up of presentation layer, application service layer and data Layer, and is as shown in Figure 3.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (3)
1. the three-dimension numerical controlled method of bridge subsection prefabricating technique is characterized in that, may further comprise the steps:
The linear and span of bridge under S1, the input global coordinate system, and the physical dimension of setting bridge subsection;
S2, bridge is carried out sections divide, bridge is divided into n sections;
The coordinate of reference mark, three sections separatrix under global coordinate system and the physical dimension of each sections on S3, the calculating bridge subsection separatrix;
The axial compression value and the camber of S4, input bridge subsection;
S5, the axial compression value and the camber that adopt step S4 to be imported are revised at the coordinate under the global coordinate system the reference mark, sections separatrix that step S3 is calculated; Calculate and considered axial compression value and the camber new coordinate of reference mark, sections separatrix under global coordinate system afterwards, and with its output;
S6, the new coordinate of reference mark, sections separatrix under global coordinate system that calculates according to step S5 are set up the local coordinate system of each beam sections face; According to the vector of each sections local coordinate system coordinate axis, calculate the adjacent segment three-dimensional coordinate transition matrix of any arbitrarily, and calculate any some three-dimensional coordinate transition matrix under global coordinate system in the sections local coordinate system;
S7, the physical dimension that sections is divided and step S3 obtains that obtains according to step S2 are calculated the coordinate of the 1st sections anchor point under local coordinate system and the calculated value of segment sizes, and are exported;
S8, the input coordinate of the 1st sections anchor point under local coordinate system and the actual measured value of segment sizes;
The actual measured value that S9, the calculated value that is calculated according to step S7 and step S8 are imported is calculated the six direction adjustment amount of sections foozle and adjacent segment; Based on the vector of six direction adjustment amount at local coordinate system; Adopt initial sections foozle to adjacent segment arbitrarily any three-dimensional coordinate transition matrix revise, calculate the adjacent segment considered after the sections foozle three-dimensional coordinate transition matrix of any arbitrarily;
S10, according to the sections foozle that step S9 calculates, judge whether the beam face reverses, whether the actual measured value of reminding customer inspection step S8 to be imported wrong, and the prompting user judges whether the sections foozle excessive;
S11, the consideration of calculating according to step S9 the three-dimensional coordinate transition matrix of any arbitrarily of the adjacent segment after the sections foozle, export the coupling coordinate calculated value and the segment sizes calculated value of initial sections anchor point;
S12, circulation step S7-11 are until n sections of bridge;
Three sections separatrix reference mark fingerboard face center line and the marginal intersection point of sections on the said bridge subsection of the step S3 separatrix, and two points that are fixed range on the sections separatrix apart from beam face center line and the marginal intersection point of sections; Said fixed range is any number less than bridge deck width.
2. the three-dimension numerical controlled method of bridge subsection prefabricating technique according to claim 1; It is characterized in that; The said camber of step S4 refers to for offsetting the distortion that bridge produces under load action, and at the correcting value opposite with deformation direction of constructing or being reserved during manufacturing.
3. the three-dimension numerical controlled method of bridge subsection prefabricating technique according to claim 1 is characterized in that, the said six direction adjustment amount of step S9 is D translation and three-dimensional rotation adjustment amount.
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| CN106223201B (en) * | 2016-07-26 | 2018-06-26 | 中南大学 | The method for correcting error of beam section bridge linear monitoring |
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| CN110717213B (en) * | 2019-10-10 | 2023-06-27 | 中国铁道科学研究院集团有限公司电子计算技术研究所 | Method and device for rapidly generating BIM construction model of railway bridge |
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| CN111622114B (en) * | 2020-05-08 | 2021-08-10 | 中铁大桥科学研究院有限公司 | Bridge segment prefabrication construction line shape error adjusting method |
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