CN103174090B - Automatic design method of concrete broadening girder bridge - Google Patents
Automatic design method of concrete broadening girder bridge Download PDFInfo
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- CN103174090B CN103174090B CN201210149100.1A CN201210149100A CN103174090B CN 103174090 B CN103174090 B CN 103174090B CN 201210149100 A CN201210149100 A CN 201210149100A CN 103174090 B CN103174090 B CN 103174090B
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Abstract
The invention discloses an automatic design method of a concrete broadening girder bridge. The method comprises the steps of confirming a cantilever line, confirming the position of a middle beam, confirming the number of chambers, confirming the position of a central line of a web plate, forming a structural map of a top plate, and the like. By adoption of the method, the automatic design of the concrete broadening girder bridge can be realized. A design scheme can be formed as long as a designer inputs conventional parameters. Workload of the designer can be effectively reduced, working efficiency is improved, and design cost of a design unit can be effectively reduced.
Description
Technical field
The present invention relates to bridge design technology field, broaden the automatic of type bridge proposition for concrete particularly to a kind of
Method for designing.
Background technology
With economic development, the increase of cities and towns automobile pollution, overhead road of city and subway become solution urban traffic blocking
Better method.Select in the type of bridge of overhead road of city and grade separation, substantially adopt prestressed concrete continuous box girder to tie
Structure, the bridge that broadens in this Concrete Continuous Box Beam structure account for very big ratio.Yet with the bridge that broadens structure very
Complexity, and existing computer aided design software all cannot meet the needs of Automated Design, designer typically requires consuming
It is designed and Plot Work with respect to 5 times of the time of general bridge, and every secondary design often can only be directed to a kind of specification
Bridge, versatility is poor.Therefore broaden bridge design for designer be an extremely headache thing, designer
Workload very big, relatively costly for general designing unit, and at home and abroad also not yet occur for this kind of bridge
Automated design engineering.
Content of the invention
For above-mentioned the deficiencies in the prior art, it is an object of the invention to provide one kind can improve viaduct design effect
Rate, reduces the automatic design method of design cost.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that：
A kind of automatic design method of concrete viaduct is it is characterised in that it comprises the steps：
1) determine cantilever line：First according to design parameter draw in computer aided drawing system road structure sideline and
Road axis, and judge the linear direction of road structure sideline, road axis, and road structure sideline, road axis
Length；Determine beginning crossbeam and whole crossbeam further according to road structure sideline, road axis；Road structure sideline is divided into
Apart from segment, and on road structure sideline mark division points, using the definition of derived function obtain each division points tangential angle,
Normal angle, obtains the jib-length at each division points using interpolation, generates cantilever line；
2) determine middle cross beam position：According to span distribution, determine the point of middle cross beam on heart line in the road, and obtain this point
Tangential angle, normal angle, road structure sideline, the intersection point of cantilever line are obtained on the normal direction of this point, and obtain each
Road structure sideline at middle cross beam and cantilever line are apart from Bxi and bridge width Bi；
3) determine chamber quantity：Tentatively suppose that chamber number is Nc first, and set the spacing of web centrage to be to the maximum
Dwmax, is then Dw=(Bi- according to the spacing that cantilever line tentatively obtains web centrage apart from Bxi and bridge width Bi
Bxi)/Nc, if the Dw obtaining is more than Dwmax, increases Nc value, till Dw is less than Dwmax, final determination Nc value, and ask
Go out web centrage apart from d=(Bi-Bxi)/Nc；
4) determine the position of web centrage：Determine each crossbeam and the intersection point of cantilever line and each point of each web centrage,
The each point connecting each web centrage determines web centrage；
5) according to web thickness, end floor beam, middle cross beam thickness forms chamber by web disalignment, ultimately forms top board
Structural map.
Preferably, in step 1) in, it is 50cm that road structure sideline is divided into the length of equidistant segment in proportion.
Preferably, in step 1) in, after generating cantilever line, should judge the cantilever line that generates whether with whole crossbeam, beginning crossbeam
Intersecting, such as non-intersect, should extend cantilever line makes it intersect with whole crossbeam, beginning crossbeam.
Preferably, in step 4) in, set the intersection point of each crossbeam and cantilever line as pi, each point of each web centrage is
pij
Then pij=pixdij
Dij=dxixj
I=1to (Nspan+1)
J=1to (Nc-1)
For overpass across number, Nc is chamber number to wherein Nspan.
Technique scheme has the advantages that：Can achieve the automatization of concrete viaduct using the method
Design, designer only need to input the design that conventional parameter can form the bridge that broadens, be effectively reduced the work of designer
Measure, improve work efficiency, can effectively reduce the design cost of designing unit simultaneously.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing that this patent is carried out in detail
Describe in detail bright.
Brief description
Fig. 1 is the design diagram of embodiment of the present invention cantilever line.
Fig. 2 is the design diagram of embodiment of the present invention middle cross beam.
Fig. 3 is the design diagram of embodiment of the present invention web centrage.
Fig. 4 is the design diagram of embodiment of the present invention roof construction.
Specific embodiment
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail.
The automatic design method of this concrete viaduct, comprises the steps：
One) determine cantilever line
1) road structure sideline L1, L2 and road axis are drawn in computer aided drawing system according to design parameter
L3；
2) structure sideline L1, L2 are judged from figure layer, road axis L3, according to road structure sideline, road axis
Initial point, the linear direction of endpoint, in the present embodiment, road structure sideline, the linear direction of road axis are set to from a left side
To the right, if it is determined that linear direction is from right to left, then should change initial point position, be changed to linear from left to right；
3) determine beginning crossbeam Ci and whole crossbeam Cj with road axis from known road structure sideline, and determine road structure
Sideline and road axis；Using function by known highway sideline be divided into 50cm about equidistant segment, and in road
Mark division points on structure sideline, and obtain it and divide number numdivide；
4) obtain the tangential angle of each division points using the definition of derived function, obtain normal angle beta_i simultaneously, utilize
Interpolation obtains the jib-length at each division points, and obtains the point from deltaL in normal direction or normal opposite direction direction
Coordinate, and connect this point pi, generate cantilever line Lxi, Rxi (as shown in Figure 1)
I=1to (numdivide+1)；
5) judge whether Lxi (Rxi) is intersected with beginning crossbeam Ci,
If intersected, obtain the position in curve Lxi for the crossing
If not intersecting the intersection point pi of the extended line obtaining curve Lxi and curve Ci
Judge whether Lxi (Rxi) is intersected with whole crossbeam Cj
If intersected, obtain the position in curve Lxi for the crossing
If not intersecting the intersection point pj of the extended line obtaining curve Lxi and curve Cj
Retain the curve between pi and pj, remaining deletion
Two) middle cross beam position is determined according to span distribution
As shown in Fig. 2 according to span distribution, determine the point pi of middle cross beam on heart line in the road, according to leading at pi point
The definition of function, obtains tangential angle, normal angle.Structure sideline, the friendship of cantilever line are obtained on the normal direction at pi point
Point pij, and obtain structure sideline at each middle cross beam with cantilever line apart from Bxi and bridge width Bi, i=1to (Nspan-
1), j=1to2, Nspan are overpass across number.
Three) determine chamber number
Tentatively suppose that chamber number is Nc first, and set the spacing of web centrage to be Dwmax to the maximum, then according to cantilever
Line tentatively to obtain the spacing of web centrage apart from Bxi and bridge width Bi be Dw=(Bi-Bxi)/Nc, if the Dw obtaining
Then increase Nc value more than Dwmax, till Dw is less than Dwmax, final determine Nc value, and obtain web centrage apart from d
=(Bi-Bxi)/Nc.
Four) determine the position of web centrage
1) determine the intersection point pi of each crossbeam and cantilever line
2) determine each point pij of each web centrage
Pij=pixdij
Dij=dxixj
I=1to (Nspan+1)
J=1to (Nc-1)
3) connect pij and determine Nc-1 web centrage (as shown in Figure 3)
Five) according to web thickness, end floor beam, middle cross beam thickness forms chamber by web disalignment, ultimately forms top
Plate structural map (as shown in Figure 4).
Can achieve the Automation Design of concrete viaduct using the method, designer only need to input conventional parameter
The design of the bridge that broadens can be formed, be effectively reduced the workload of designer, improve work efficiency, can effectively drop simultaneously
The design cost of low designing unit.
A kind of automatic design method of the concrete the viaduct above embodiment of the present invention being provided has been carried out in detail
Thin introduction, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, in specific embodiment and application model
Place and all will change, in sum, this specification content should not be construed as limitation of the present invention, all set according to the present invention
Any change that meter thought is made is all within protection scope of the present invention.
Claims (3)
1. a kind of automatic design method of concrete viaduct is it is characterised in that it comprises the steps：
1) determine cantilever line：First road structure sideline and road are drawn in computer aided drawing system according to design parameter
Centrage, and judge the linear direction of road structure sideline, road axis, and the length in road structure sideline, road axis
Degree；Determine beginning crossbeam and whole crossbeam further according to road structure sideline, road axis；Road structure sideline is divided into equidistant
Segment, and division points are marked on road structure sideline, tangential angle, the normal angle of each division points is obtained using derived function definition
Degree, obtains the jib-length at each division points using interpolation, generates cantilever line；
2) determine middle cross beam position：According to span distribution, determine the point of middle cross beam on heart line in the road, and obtain cutting of this point
Line angle degree, normal angle, obtain normal and road structure sideline, the intersection point of cantilever line of this point, and obtain at each middle cross beam
Road structure sideline is to cantilever line apart from Bxi and bridge width Bi；
3) determine chamber quantity：Tentatively suppose that chamber number is Nc first, and set the spacing of web centrage to be Dwmax to the maximum,
Then web centrage is tentatively obtained apart from Bxi, bridge width Bi according to road structure sideline at middle cross beam to cantilever line
Spacing is Dw=(Bi-Bxi)/Nc, if the Dw obtaining is more than Dwmax, increases Nc value, till Dw is less than Dwmax,
Determine eventually Nc value, and obtain web centrage apart from d=(Bi-Bxi)/Nc；
4) determine the position of web centrage：Determine each crossbeam and the intersection point of cantilever line and each point of each web centrage, connect
The each point of each web centrage determines web centrage；
5) according to web thickness, end floor beam, middle cross beam thickness forms chamber by web disalignment, ultimately forms roof construction
Figure.
2. concrete viaduct according to claim 1 automatic design method it is characterised in that：In step 1)
In, it is 50cm that road structure sideline is divided into the length of equidistant segment in proportion.
3. concrete viaduct according to claim 1 automatic design method it is characterised in that：In step 1)
In, after generating cantilever line, should judge whether the cantilever line generating is intersected with whole crossbeam, beginning crossbeam, such as non-intersect, should extend outstanding
Arm line makes it intersect with whole crossbeam, beginning crossbeam.
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| CN103174090B true CN103174090B (en) | 2017-02-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111046479A (en) * | 2019-12-27 | 2020-04-21 | 苏州桥友信息科技有限公司 | Automatic design method of steel box girder bridge |
| CN112001015B (en) * | 2020-08-24 | 2022-03-01 | 上海市城市建设设计研究总院（集团）有限公司 | Computer-based beam distribution number measuring and calculating method for multi-beam type precast beam bridge |
| CN113089496A (en) * | 2021-05-06 | 2021-07-09 | 山东省路桥工程设计咨询有限公司 | Calculation method for upper structure design of variable-width prefabricated bridge |
| CN113605214B (en) * | 2021-08-23 | 2022-11-18 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
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Effective date of registration: 20190507 Address after: 215011 Zhuyuan Road 209, Huqiu District, Suzhou City, Jiangsu Province Patentee after: Suzhou Qiaoyou Information Technology Co., Ltd. Address before: 215129 Lily Blossom Apartment 7-604, Shishan Road, Suzhou High-tech District, Jiangsu Province Patentee before: Cui Yi |
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