CN104636545B - Curved face type concrete bridge deck node observing and controlling absolute altitude localization method - Google Patents
Curved face type concrete bridge deck node observing and controlling absolute altitude localization method Download PDFInfo
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- CN104636545B CN104636545B CN201510016148.9A CN201510016148A CN104636545B CN 104636545 B CN104636545 B CN 104636545B CN 201510016148 A CN201510016148 A CN 201510016148A CN 104636545 B CN104636545 B CN 104636545B
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Abstract
The invention is related to curved face type concrete bridge deck construction building field, and in particular to curved face type concrete bridge deck node observing and controlling absolute altitude localization method.This method carries out projection localization on measurement and positioning, referring to curved surface of the finite element split plot design to concrete bridge deck, converts calculation formula by coordinate plane, the space absolute altitude at any point on curved surface can be accurately calculated.Absolute altitude progress measuring positioning is calculated by the way that the floor projection of curved surface using axis as foundation, to be divided into the grid of several small dimensions, then by the grid node of these grids, finally connection forms smooth space curved surface.Easy to operate using this method, absolute altitude positioning is very accurate, can substantially reduce measuring difficulty and labor intensity, accelerate construction progress, and create good conditions for formwork, make formwork accurate positioning, so that it is guaranteed that the construction quality of curved face type concrete bridge deck.
Description
Technical field
The invention is related to curved face type concrete bridge deck construction building field, and in particular to one kind is divided based on finite element
The curved face type concrete bridge deck node observing and controlling absolute altitude localization method of method.
Background technique
In recent years, with the development of construction industry, various uniqueness Surface Stylings are more and more, the building of surface modeling because
Its " the advantages that changeful moulding, flexible space application and good drainage performance " and be widely used.Currently, because of song
Difficulty of construction is big for face moulding bridge floor, and the requirement to construction is also higher and higher, common be all using high cost steel construction, and
Using the extremely rarely seen of concrete.Curved face type concrete bridge deck construction technology has filled up the domestic sky in the technical field research
It is white.The construction technology can not only reduce difficulty of construction, improve speed of application, guarantee construction quality and safety, and save labor
The investment of power and material reduces manufacturing cost, has significant economic benefit.Meanwhile compared with customizing punching block, use can be weighed
The common bamboo and wood template used again, reduces lifting energy consumption, also has environment protection significance.
The construction early-stage preparations of curved face type concrete bridge deck, need to carry out the bridge floor of surface modeling absolute altitude, then by absolute altitude
It connects to form a curved surface using the foundation as built and formwork.In the prior art, for curved face type concrete bridge deck
Its difficulty of absolute altitude is larger, and cumbersome, finally the case where also usually will appear position inaccurate on measurement and positioning, causes
Last formwork inaccuracy, to influence the construction quality of curved face type concrete bridge deck.
Summary of the invention
The purpose of the invention be to avoid above-mentioned shortcoming in the prior art and provide it is a kind of easy to operate, fixed
The accurate curved face type concrete bridge deck node observing and controlling absolute altitude localization method based on finite element split plot design in position is accurate to improve absolute altitude
Property simultaneously reduces measuring difficulty and labor intensity.
The purpose of the invention is achieved through the following technical solutions:
Curved face type concrete bridge deck node observing and controlling absolute altitude localization method is provided, includes the following steps content:
A., the projection that curved face type concrete bridge deck is carried out to three directions using finite element analysis software, is along vertical respectively
Direction is by curved face type concrete bridge towards horizontal plane projection, by curved face type concrete bridge deck to rear projected and by curved face type coagulation
Native bridge floor lateral projection to the left；
B. curved face type concrete bridge deck projects to form the first perspective plane in horizontal plane, with the lower right corner endpoint on the first perspective plane
Place establishes horizontal coordinates as origin O, and horizontal coordinates include mutually perpendicular horizontal axis a and longitudinal axis b, curved face type concrete bridge
It projects to form the second perspective plane towards left side, curved face type concrete bridge deck forms third perspective plane, the second projection to rear projected
Face connects the left margin on the first perspective plane, and third perspective plane connects the coboundary on the first perspective plane, to form curved face type coagulation
The three-dimensional perspective plane of native bridge floor, wherein the coboundary on the second perspective plane corresponds to the left-most curve of curved face type concrete bridge deck, third
The coboundary on perspective plane corresponds to the back curve of curved face type concrete bridge deck；
C. respectively along the horizontal axis a of horizontal coordinates and longitudinal axis b between identical on the three-dimensional perspective plane completed in stepb
Away from cut-off rule is drawn, three-dimensional perspective plane is divided into several grids；
D. at the construction field (site) by the cut-off rule distribution bullet line of ink marker in above-mentioned steps C on site underplate concrete surface layer；
E. the vertical elevation Z of any grid node in three-dimensional perspective plane, the horizontal seat which fastens in horizontal coordinate are calculated
It is designated as a, ordinate b, calculates vertical elevation H of the grid node in the projection of left side firstC, calculation formula isR in formula1For the radius of the coboundary on the second perspective plane, b0For the second projection
The ordinate of the point of contact m of the coboundary and its slitter line in face, h1For the vertical elevation of the point of contact m, wherein R1、b0、h1It is
Know constant, then calculate the radius R of the corresponding locating rear projected curve of the grid node, calculation formula is R=(Hc-h0)2+
L2/2(Hc-h0), L is the lateral length on the first perspective plane, h0Relatively vertical mark for coordinate origin relative to third perspective plane
Height, wherein L, h0For known constant, Z is finally calculated, calculation formula isWork as grid
Node takes at the coboundary on the second perspective plane, calculates the vertical mark that gained is the left-most curve of curved face type concrete bridge deck
Height, when grid node takes at the coboundary on third perspective plane, calculating gained is the back curve of curved face type concrete bridge deck
Vertical elevation；
F. the absolute altitude that resulting each grid node will be calculated carries out live pilot measurement mark, as built and formwork according to
According to a smooth curved surface can be formed by linking up all calculated point absolute altitudes.
Wherein, it is 1000mm*1000mm or smaller grid that the grid, which is size,.
The invention the utility model has the advantages that
The curved face type concrete bridge deck node observing and controlling absolute altitude localization method of the invention, on measurement and positioning, reference has
It limits first split plot design and projection localization is carried out to the curved surface of concrete bridge deck, calculation formula is converted by coordinate plane, it can be accurately
Calculate the space absolute altitude at any point on curved surface.By the way that using axis as foundation, the floor projection of curved surface is divided into several
1000mm*1000mm or smaller grid, then these grid nodes are calculated into absolute altitude and carry out measuring positioning, finally connection is formed
Smooth space curved surface.Easy to operate using this method, absolute altitude positioning is very accurate, can substantially reduce measuring difficulty and labour is strong
Degree, accelerates construction progress, and create good conditions for formwork, makes formwork accurate positioning, so that it is guaranteed that curved face type concrete bridge deck
Construction quality, guarantee the linear smoothness of the bridge floor of final pouring molding, meet high-precision requirement.
Detailed description of the invention
Innovation and creation are described further using attached drawing, but the embodiment in attached drawing does not constitute and appoints to the invention
What is limited, for those of ordinary skill in the art, without creative efforts, can also be according to the following drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of curved face type concrete bridge deck.
Fig. 2 is the schematic diagram on the three-dimensional perspective plane of curved face type concrete bridge deck.
Fig. 3 is the schematic diagram for being disposed with the three-dimensional perspective plane of cut-off rule.
Fig. 4 is the schematic diagram on the second perspective plane.
Fig. 5 is the schematic diagram on third perspective plane.
Fig. 6 is the calculating schematic diagram of the vertical elevation Z of any point on the curved surface of curved face type concrete bridge deck.
Fig. 7 is the schematic diagram that vertical elevation is carried out to the grid node in three-dimensional perspective plane.
Fig. 8 be to correspond in three-dimensional perspective plane the curved boundary of left-most curve and back of curved face type concrete bridge deck into
The schematic diagram of row vertical elevation.
Specific embodiment
The invention is further described with the following Examples.
The curved face type concrete bridge deck node observing and controlling absolute altitude localization method of the invention, for rapidly and accurately to curved surface
The curved surface of type concrete bridge deck carries out axis absolute altitude pilot measurement, using coordinate grid measurement and positioning method, space curved surface is carried out horizontal
Projection, specifically includes following steps content:
A. curved face type concrete bridge deck is as shown in Figure 1, by being carried out three directions using finite element analysis software
Projection, be respectively along the vertical direction by curved face type concrete bridge towards horizontal plane projection, by curved face type concrete bridge deck to rear side
Projection and by curved face type concrete bridge deck lateral projection to the left.
B. curved face type concrete bridge deck projects to form the first perspective plane in horizontal plane, with the lower right corner endpoint on the first perspective plane
Place establishes horizontal coordinates as origin O, and horizontal coordinates include mutually perpendicular horizontal axis a and longitudinal axis b, as shown in Fig. 2, curved surface
Lateral projection forms the second perspective plane to type concrete bridge deck to the left, sees on the left of Fig. 2, curved face type concrete bridge deck is formed to rear projected
Third perspective plane sees above Fig. 2 that the second perspective plane connects the left margin on the first perspective plane, the first projection of third perspective plane connection
The coboundary in face, to form the three-dimensional perspective plane of curved face type concrete bridge deck, wherein the coboundary on the second perspective plane is corresponding bent
The left-most curve of face type concrete bridge deck, the coboundary on third perspective plane correspond to the back curve of curved face type concrete bridge deck.
C. respectively along the horizontal axis a of horizontal coordinates and longitudinal axis b between identical on the three-dimensional perspective plane completed in stepb
Away from cut-off rule is drawn, three-dimensional perspective plane is divided into several grids, as shown in figure 3, it is 1000mm*1000mm that the grid, which is size,
Or smaller grid.
D. at the construction field (site) by the cut-off rule distribution bullet line of ink marker in above-mentioned steps C on site underplate concrete surface layer.
E. coordinate plane conversion calculation formula starts to calculate the vertical elevation Z of any grid node in three-dimensional perspective plane: choosing
A grid node is taken, which is a, ordinate b in the abscissa that horizontal coordinate is fastened, and calculates the grid node first on a left side
Vertical elevation H on lateral projection directionC, calculation formula isR in formula1It is second
The radius of the coboundary on perspective plane, b0For the ordinate of the point of contact m of the coboundary and its slitter line on the second perspective plane, h1It is described
The vertical elevation of point of contact m, wherein R1、b0、h1It is known constant, the relationship between each parameter can refer to Fig. 4；Followed by upper
It states and calculates HCThe radius R of rear projected curve corresponding to the grid node is calculated, calculation formula is R=(Hc-h0
)2+L2/2(Hc-h0), L is the lateral length on the first perspective plane, h0Relatively vertical mark for coordinate origin relative to third perspective plane
Height, wherein L, h0For known constant, formula calculated relationship be can refer to shown in Fig. 5；It after obtaining R, finally takes turns to and calculates Z, calculate public
Formula isIt is each to join the geometry of numbers specifically as shown in Figure 6；When grid node takes second
When the coboundary on perspective plane, the vertical elevation that gained is the left-most curve of curved face type concrete bridge deck is calculated, grid node is worked as
It takes at the coboundary on third perspective plane, calculates the vertical elevation that gained is the back curve of curved face type concrete bridge deck.One
As first calculate the vertical elevation of each grid node in three-dimensional perspective plane, the then first scale value in three-dimensional perspective plane, such as Fig. 7 institute
Show, then calculate the left-most curve of curved face type concrete bridge deck and the vertical elevation of back curve respectively again, is thrown respectively in three-dimensional
The left margin and coboundary scale value in shadow face, as shown in Figure 8.
F. after calculating required vertical elevation, the absolute altitude for calculating resulting each grid node is subjected to live pilot measurement mark
Note, using the foundation as built and formwork, all calculated point absolute altitudes, which are linked up, can form a smooth curved surface.
Can be set up with that according to absolute altitude load steel pipe cross bar, put back a tree, used in making timber for boats, paving template fix, reinforce.Template selects matter
It measures preferable bamboo splint and common templates collocation uses, in the preferable bamboo splint of curvature larger part intensity, to be bent.
Back a tree, used in making timber for boats supporting template set up after can be laid on it, assembling reinforcement, last casting concrete, complete curved surface
The construction of type concrete bridge deck.To ensure that concreting is coherent, it is preferred to use heat pump pours, and is arranged in the low of curved plate
Place, so as to cloth from the bottom up.Since the bridge floor gradient is larger, plate vibrator can not play effect, therefore concrete makes
It is vibrated with vibrating spear.Concrete vibrating opportunity and time of vibration must be controlled, every a period of time preferably after cloth, makes to mix
Solidifying soil acquisition is preliminary heavy real, then vibrates.Grasping level glows cement slurry with concrete surface and is advisable when vibrating, and pays attention to seeing
Concrete downslide trickling situation is examined, covering plate face muscle upper layer muscle with the concrete of trickling is advisable.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the invention, rather than to this hair
It is bright create protection scope limitation, although being explained in detail referring to preferred embodiment to the invention, this field it is general
Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the invention, without departing from this
The spirit and scope of innovation and creation technical solution.
Claims (1)
1. curved face type concrete bridge deck node observing and controlling absolute altitude localization method, it is characterised in that include the following steps content:
A., the projection that curved face type concrete bridge deck is carried out to three directions using finite element analysis software, is along the vertical direction respectively
By curved face type concrete bridge towards horizontal plane projection, by curved face type concrete bridge deck to rear projected and by curved face type concrete bridge
It is projected towards left side；
B. curved face type concrete bridge deck projects to form the first perspective plane in horizontal plane, to make at the lower right corner endpoint on the first perspective plane
Establish horizontal coordinates for origin O, horizontal coordinates include mutually perpendicular horizontal axis a and longitudinal axis b, curved face type concrete bridge towards
Left side projects to form the second perspective plane, and curved face type concrete bridge deck forms third perspective plane to rear projected, and the second perspective plane connects
The left margin on the first perspective plane is connect, third perspective plane connects the coboundary on the first perspective plane, to form curved face type concrete bridge
The three-dimensional perspective plane in face, wherein the coboundary on the second perspective plane corresponds to the left-most curve of curved face type concrete bridge deck, third projection
The coboundary in face corresponds to the back curve of curved face type concrete bridge deck；
C. it is drawn respectively along the horizontal axis a of horizontal coordinates and longitudinal axis b with identical spacing on the three-dimensional perspective plane completed in stepb
Three-dimensional perspective plane is divided into several grids by cut-off rule；
D. at the construction field (site) by the cut-off rule distribution bullet line of ink marker in above-mentioned steps C on site underplate concrete surface layer；
E. the vertical elevation Z of any grid node in three-dimensional perspective plane is calculated, which is in the abscissa that horizontal coordinate is fastened
A, ordinate b calculate vertical elevation H of the grid node in the projection of left side firstC, calculation formula isR in formula1For the radius of the coboundary on the second perspective plane, b0For the second perspective plane
Coboundary and its slitter line point of contact m ordinate, h1For the vertical elevation of the point of contact m, wherein R1、b0、h1It is known
Constant, then calculates the radius R of the corresponding locating rear projected curve of the grid node, and calculation formula is R=(Hc-h0)2+L2/
2(Hc-h0), L is the lateral length on the first perspective plane, h0Opposite vertical elevation for coordinate origin relative to third perspective plane,
Middle L, h0For known constant, Z is finally calculated, calculation formula isWhen grid node takes
At the coboundary on the second perspective plane, the vertical elevation that gained is the left-most curve of curved face type concrete bridge deck is calculated, net is worked as
Lattice node takes at the coboundary on third perspective plane, calculates the vertical mark that gained is the back curve of curved face type concrete bridge deck
It is high；
F. the absolute altitude for calculating resulting each grid node is subjected to live pilot measurement mark, it, will as the foundation of built and formwork
All calculated point absolute altitudes, which link up, can form a smooth curved surface；
The grid is the grid that size is 1000mm*1000mm.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538907A (en) * | 2009-03-25 | 2009-09-23 | 中建三局第二建设工程有限责任公司 | Construction method for building concrete superface with surface modeling |
| CN101761134A (en) * | 2009-12-31 | 2010-06-30 | 浙江中成建工集团有限公司 | Construction technology of spatial variable curved surface reinforced concrete irregular barrel group structure |
| CN103761373A (en) * | 2014-01-09 | 2014-04-30 | 中国人民解放军空军工程大学 | System and method for optimally designing thickening layers of airport pavements |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005228260A (en) * | 2004-02-16 | 2005-08-25 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Distortion distribution calculation method for shaping plate material to objective curved surface |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538907A (en) * | 2009-03-25 | 2009-09-23 | 中建三局第二建设工程有限责任公司 | Construction method for building concrete superface with surface modeling |
| CN101761134A (en) * | 2009-12-31 | 2010-06-30 | 浙江中成建工集团有限公司 | Construction technology of spatial variable curved surface reinforced concrete irregular barrel group structure |
| CN103761373A (en) * | 2014-01-09 | 2014-04-30 | 中国人民解放军空军工程大学 | System and method for optimally designing thickening layers of airport pavements |
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