CN109883307A - A method of it is detected for bridge member camber - Google Patents
A method of it is detected for bridge member camber Download PDFInfo
- Publication number
- CN109883307A CN109883307A CN201910187764.9A CN201910187764A CN109883307A CN 109883307 A CN109883307 A CN 109883307A CN 201910187764 A CN201910187764 A CN 201910187764A CN 109883307 A CN109883307 A CN 109883307A
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- camber
- beam section
- measured
- actual measurement
- control line
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a kind of methods for the detection of bridge member camber, and this method includes putting to set SURVEYING CONTROL NETWORK on moulding bed；The beam section that camber is zero is placed on the moulding bed, determines whole across purlin spelling zero curve position；On the basis of the zero curve and the reference line of the SURVEYING CONTROL NETWORK, actual measurement control line is determined；The actual measurement control line is parallel with the zero curve；The distance on surface of the actual measurement control line to beam section to be measured is measured, the camber for obtaining beam section to be measured is calculated.Method provided by the present application, operating method is simple, convenient, practical, convenient for production and installation；Installation, spelling purlin piece operating rate are greatly improved, is avoided because of error caused by setting up total station survey repeated measurement backsight point, hanging plummet；Practical, the assembling of inspection steel part, postwelding finished product are repeated after installing successfully.The spending of saving personnel, machinery and material, effective save the cost simultaneously significantly improve working efficiency.
Description
Technical field
The present invention relates to science of bridge building technical field of buildings, more particularly to a kind of side for the detection of bridge member camber
Method.
Background technique
In recent years, with the General Promotion of material quality, design level, manufacturing process and construction technology, large-scale full welding
Steel truss girder bridge is more and more widely used in the construction of domestic and international railway and road-cum-rail bridge.In bridge construction process,
Piece camber installation positioning in steel truss girder purlin is carried out after loop wheel machine lifting contraposition for the component of large volume, overlength degree, quality weight.
It is how rationally assembled linear before effective control steel truss girder welding, guarantee that steel truss girder postwelding whole geometry size reaches and meets and sets
Meter requires, and becomes the key of large-scale full welding steel truss girder bridge manufacturing technology.When traditional camber measurement method is using total station
Shi Jinhang detects each point camber, needs when installing beam section with total station repeated measurement each point, using prism, hangs plummet cooperation and makes
With, and need whether frequent detecting instrument backsight point deviates, operate loaded down with trivial details and easily generate error, and is time-consuming and laborious.
Summary of the invention
The present invention provides a kind of methods for the detection of bridge member camber.Suitable for large bridges beam section spelling
Camber must measure.On the basis of measuring net reference line, determine that the actual measurement control line an of strong operability, measuring steel wire line arrive
The distance of rod piece calculates each point camber, is quickly and expediently installed.
The present invention provides following schemes:
A method of it is detected for bridge member camber, comprising:
It is put on moulding bed and sets SURVEYING CONTROL NETWORK；
The beam section that camber is zero is placed on the moulding bed, determines whole across purlin spelling zero curve position；
On the basis of the zero curve and the reference line of the SURVEYING CONTROL NETWORK, actual measurement control line is determined；The actual measurement
Control line is parallel with the zero curve；
The distance on surface of the actual measurement control line to beam section to be measured is measured, the camber for obtaining beam section to be measured is calculated.
It is preferred: described to calculate the camber for obtaining beam section to be measured, comprising: determine the actual measurement control line with it is described
Camber is the distance between zero surface of beam section L0, measure the actual measurement control line to the surface of beam section to be measured away from
From L1, camber L=L1-L0 of the beam section to be measured.
Preferred: the L0 is 150-300 millimeters.
It is preferred: erection and the contour at least two independent columns of the moulding bed in the outside of the moulding bed, described
It is connected separately with horizontal connecting rod on separate column, is provided with clamping device in the connecting rod；The actual measurement control
Line is wire, and one end of the wire is fixedly linked with the clamping device in a wherein connecting rod；The wire it is another
One end is connected across the clamping device in another connecting rod with column.
Preferred: the other end of the wire passes through cord holder and column phase across the clamping device in another connecting rod
Even, the cord holder is for tightening the wire.
Preferred: the diameter that the wire is is 1.5 millimeters.
It is preferred: the distance on surface of the actual measurement control line to beam section to be measured is measured using steel ruler.
Preferred: the beam section that the camber is zero is the beam section positioned at both ends.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
By the invention it is possible to realize a kind of method for the detection of bridge member camber, in an implementation mode, this method
It may include putting to set SURVEYING CONTROL NETWORK on moulding bed；The beam section that camber is zero is placed on the moulding bed, determines whole across purlin spelling
Zero curve position；On the basis of the zero curve and the reference line of the SURVEYING CONTROL NETWORK, actual measurement control line is determined；The reality
It is parallel with the zero curve to measure control line；The distance on surface of the actual measurement control line to beam section to be measured is measured, is calculated
Obtain the camber of beam section to be measured.Method provided by the present application, operating method is simple, convenient, practical, convenient for production and installation；
Installation, spelling purlin piece operating rate are greatly improved, caused by avoiding because setting up total station survey repeated measurement backsight point, hanging plummet
Error；Practical, the assembling of inspection steel part, postwelding finished product are repeated after installing successfully.The spending of saving personnel, machinery and material,
Effective save the cost simultaneously significantly improves working efficiency.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow chart of method for the detection of bridge member camber provided in an embodiment of the present invention;
Fig. 2 is control net schematic diagram provided in an embodiment of the present invention；
Fig. 3 is column provided in an embodiment of the present invention and actual measurement control line connection schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
Embodiment
It is a kind of method for the detection of bridge member camber provided in an embodiment of the present invention referring to Fig. 1, as shown in Figure 1,
This method comprises:
S101: it is put on moulding bed and sets SURVEYING CONTROL NETWORK W.
S102: as shown in Figure 2 and Figure 3, the beam section 1 that camber is zero is placed on the moulding bed, determines whole across purlin spelling zero curve
2 positions；The beam section that the camber is zero is the beam section positioned at both ends.
S103: on the basis of the reference line of the zero curve 2 and the SURVEYING CONTROL NETWORK W, actual measurement control line 3 is determined；
The actual measurement control line 3 is parallel with the zero curve 2；At least two contour with the moulding bed are set up in the outside of the moulding bed
The independent column 4 of root is connected separately with horizontal connecting rod 5 on the separate column 4, is provided with card in the connecting rod 5
It is fixedly mounted with and sets 6；The actual measurement control line 3 is wire, and one end of the wire is filled with the fixing in a wherein connecting rod
6 are set to be fixedly linked；The other end of the wire is connected across the clamping device in another connecting rod with column.The wire
The other end be connected with column across the clamping device in another connecting rod by cord holder 7, the cord holder be used for will described in
Wire is tightened.The diameter that the wire is is 1.5 millimeters.
S104: measuring the distance on surface of the actual measurement control line to beam section to be measured, calculates and obtains beam to be measured
The camber of section.It determines that the actual measurement control line and the camber are the distance between zero surface of beam section L0, measures institute
State actual measurement control line to the surface of beam section to be measured distance L1, camber L=L1-L0 of the beam section to be measured.It is described
L0 is 150-300 millimeters.The distance on surface of the actual measurement control line to beam section to be measured is measured using steel ruler.
The application has set up a wire parallel with whole across purlin spelling zero curve in moulding bed side, which collapses apart from whole
The distance of the starting beam section of bridge to be assembled is to be manually set, since the camber of starting beam section can consider to be zero, with
On the basis of this distance, the camber of other beam sections after assembly can be both obtained with survey calculation.Method provided by the present application is in use, put
If SURVEYING CONTROL NETWORK, beam section is lifted, first the linear big lower-chord panel point for being zero is placed on moulding bed, it is big with this after being adjusted in place
By measuring through big instrument on the basis of node system point, whole across purlin spelling zero curve position is determined, then with this zero curve and measurement net benchmark
On the basis of line, the actual measurement control line an of strong operability is determined, it is taut by turnbuckle to be less than 1.5mm finer wire with diameter
Tightly, the distance of holding clamp adjustment steel wire line position, steel ruler measuring steel wire line to rod piece, calculates each point camber.
It is illustrated by taking Bangladesh's Pa Dema bridge as an example below, Pa Dema bridge is by 7 41 hole spans of allying the communists
The all-welded structure steel truss girder of 150m forms, and trusses rod piece is completed to spell through sea-freight transport to Bangladesh by manufacturing in factory, Shan Qiao group
After filling field, the two of progress chord member and node spell a welding first, then carry out the welding of 150 meters of monolithic purlin pieces, finally complete whole
Welding across the big segment 150m.
Pa Dema bridge single span length is 150 meters, and whole collapse is divided into east and west sides purlin piece, and every side purlin piece is divided into 4 sections, every section of purlin
Leaf length counts roughly 38m, and purlin piece spelling, which is all lain on moulding bed, to be completed.It is put on moulding bed before purlin is assembled and sets measuring control point, determined
Line between each measuring control point is zero curve.SURVEYING CONTROL NETWORK is established, guarantees that entire purlin is spelled region and is completely in control net.Beam section
After the completion of spelling on assembled moulding bed, by measuring the camber line style for the distance controlling purlin piece for hanging wire to girder steel chord member,
Until steel truss beam section camber position meets design and drawing code requirement, positioning, welding.
The adjustment of steel truss beam section camber is achieved in that
Purlin piece is before spelling, and levelling to whole secondary moulding bed top surface progress by level, survey sets control point, and control point is located at moulding bed
On contour separate column, column is located on the outside of moulding bed, independently and does not carry load, settles smaller.Column is using long 1.3m's
The H300 fashioned iron top one piece of steel plate group that tiles is welded, and mark signature line and sample dotting punch is stamped on the steel plate, with the control of this positioning measurement
Point Q1, Q2, Q3, Q4.
When spelling, the linear big lower-chord panel point for being 0 is placed on moulding bed first, after being adjusted in place, with this big node system
By measuring through big instrument on the basis of system point, whole across purlin spelling zero curve position is determined, then using this zero curve and measurement net reference line as base
Standard determines the actual measurement control line an of strong operability, is less than 1.5mm finer wire with diameter and is tightened by turnbuckle, raw
For root on spelling moulding bed, this line can set that (steel wire is apart from the side girder steel 150-300mm) at general 0 point apart from steel truss girder any distance
Just practical.
Each node is measured to the distance of wire, calculates the camber of measurement point, measuring linear is steel wire line-spacing girder steel at 0
Surface L 0, L1 of the wire away from steel beam surface at second node, then camber L=L1-L0 at second point, and so on calculate
Each point camber out meets the position of design requirement according to the adjustment of camber result.
It is that 0 beam section combines determining one reality for being parallel to measurement control point using control point in SURVEYING CONTROL NETWORK and camber
Control line is measured, steel ruler measures control line to the distance of mounting rail section surface, calculates the camber of installation beam section.Suitable for needing to be segmented
Align the camber adjustment of big, quality weight the bridge beam section component of volume of installation.Can accurately adjust contraposition and it is easy to operate, keep away
Exempt to cooperate sash weight repeated measurement using total station, improve construction efficiency, reduces difficulty of construction.It is big to can be not only used for detection trusses
Type purlin plate plane spelling, it may also be used for the whole vertical side sway for spelling trusses of the 3D that collapses is examined, it is easy to operate, quick.With the survey being previously set
Controlling net is datum mark setting measurement control wire, and wire is less than 1.5mm finer wire using diameter and passes through turnbuckle
It tightens, holding clamp adjusts the distance of steel wire line position, steel ruler measuring steel wire line to rod piece, calculates camber, and tool is simple, easily grasps
Make.
In short, method provided by the present application, operating method is simple, convenient, practical, convenient for production and installation；It greatly improves
Installation, spelling purlin piece operating rate are avoided because of error caused by setting up total station survey repeated measurement backsight point, hanging plummet；
Practical, the assembling of inspection steel part, postwelding finished product are repeated after installing successfully.The spending of saving personnel, machinery and material, it is effective to save
About cost and significantly improve working efficiency.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. a kind of method for the detection of bridge member camber, which is characterized in that the described method includes:
It is put on moulding bed and sets SURVEYING CONTROL NETWORK；
The beam section that camber is zero is placed on the moulding bed, determines whole across purlin spelling zero curve position；
On the basis of the zero curve and the reference line of the SURVEYING CONTROL NETWORK, actual measurement control line is determined；The actual measurement
Control line is parallel with the zero curve；
The distance on surface of the actual measurement control line to beam section to be measured is measured, the camber for obtaining beam section to be measured is calculated.
2. the method according to claim 1 for the detection of bridge member camber, which is characterized in that calculatings acquisition to
Measure beam section camber, comprising: determine between the surface for the beam section that the actual measurement control line and the camber are zero away from
From L0, the distance L1, the camber L of the beam section to be measured on surface of the actual measurement control line to beam section to be measured are measured
=L1-L0。
3. the method according to claim 2 for the detection of bridge member camber, which is characterized in that the L0 is 150-
300 millimeters.
4. the method according to claim 1 for the detection of bridge member camber, which is characterized in that in the outer of the moulding bed
Side is set up and the contour at least two independent columns of the moulding bed, and horizontal connection is connected separately on the separate column
Bar is provided with clamping device in the connecting rod；The actual measurement control line be wire, one end of the wire and its
In clamping device in a connecting rod be fixedly linked；The other end of the wire across in another connecting rod clamping device with
Column is connected.
5. it is according to claim 4 for bridge member camber detection method, which is characterized in that the wire it is another
One end is connected by cord holder with column across the clamping device in another connecting rod, and the cord holder is used for the wire
It tightens.
6. the method according to claim 5 for the detection of bridge member camber, which is characterized in that the wire
Diameter is 1.5 millimeters.
7. the method according to claim 1 for the detection of bridge member camber, which is characterized in that measure institute using steel ruler
State actual measurement control line to the surface of beam section to be measured distance.
8. the method according to claim 1 for the detection of bridge member camber, which is characterized in that the camber is zero
Beam section is the beam section positioned at both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910187764.9A CN109883307B (en) | 2019-03-13 | 2019-03-13 | Method for detecting camber of bridge member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910187764.9A CN109883307B (en) | 2019-03-13 | 2019-03-13 | Method for detecting camber of bridge member |
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| Publication Number | Publication Date |
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| CN109883307A true CN109883307A (en) | 2019-06-14 |
| CN109883307B CN109883307B (en) | 2021-04-16 |
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| CN201910187764.9A Active CN109883307B (en) | 2019-03-13 | 2019-03-13 | Method for detecting camber of bridge member |
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| CN109883307B (en) | 2021-04-16 |
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