CN109306666A - It is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique - Google Patents
It is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique Download PDFInfo
- Publication number
- CN109306666A CN109306666A CN201810941521.5A CN201810941521A CN109306666A CN 109306666 A CN109306666 A CN 109306666A CN 201810941521 A CN201810941521 A CN 201810941521A CN 109306666 A CN109306666 A CN 109306666A
- Authority
- CN
- China
- Prior art keywords
- bridge
- template
- camber
- formula
- end bay
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
Abstract
The invention discloses a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique, is related to field of bridge construction, comprising the following steps: determine the bridge subsection section of template-setup；According to the bridge subsection interval computation of template-setup at this bridge add camber fj；According to additional camber fjThe camber f of bridge to be poured at position is arranged in calculation template；The height H that bracket at construction stage position is calculated according to camber f according to the height H erect bracket of bracket, and completes the setting to template, the present invention can make after the completion of rotator construction bridge construction at bridge it is linear with design it is linear coincide it is consistent.
Description
Technical field
The present invention relates to field of bridge construction, and in particular to it is a kind of for symmetrical three across in Bridge Rotation Construction Technique
Template-setup method.
Background technique
With the rapid development of traffic network and urban construction, various overcrossing railways, highway, river and urban road bridge
Beam is more and more, and according to conventional method for bridge construction, the work progress of cross-line bridge makes the operation of existing railway, highway
At larger impact, cause traffic long-term unsmooth or even paralysis.Bridge is first now parallel to by existing traffic route using rotator construction
It sets up, then by advance in the flexural pivot system that bridge pier bottom is arranged in bridge entirety flat turn to existing traffic route just
Side can greatly reduce the interference to the operation of existing traffic route in this way.For some cross a river roads bridge, this rotator construction can
To avoid a large amount of temporary support structures are built in waters, bridge construction cost is reduced.
Rotator construction bridge generally uses rack construction to build template pouring construction, wherein installation template is completed on bracket
After be difficult to be adjusted template.So during the concreting of girder segment, it is pre- to mould absolute altitude setting-out and bracket
Pressure, the i.e. linear control of main girder construction are particularly important.Using the bridge of rotator construction generally by 1 main span and 2 end bay groups
At three connect Span Continuous steel structure bridges, beam body depth of section consecutive variations are uneven, entire beam body bottom surface be curved surface.In existing skill
In art:
The height H of rack construction segment situation template is arranged according to following rule:
H=H0+fy+fz
Wherein, H0For Theoretical Design height value, fyFor camber, fzFor construction bracket deformation, (deformation of timbering is pre- by bracket
Pressure test obtains).
Camber fyUsually considering construction loads, vehicle in use load, structure both shrinks and creeping etc. influences bring bridge
Beam deformation.The camber f of the prior artyCalculation is as follows:
fy=fsg+fyy+fhz
Wherein, fsgFor construction stage camber, fyyFor operation stage camber, fhzFor mobile load camber.
Construction stage camber (fsg): for the computation model established according to theoretical calculation and the calculating parameter determined, in conjunction with
Construction operating condition, carries out forward-analysis method, and obtained Cheng Qiaohou (deck paving completion) is displaced antiarch value.
Operation stage camber (fyy): it is the displacement antiarch value of main bridge during operation 10 years.
Mobile load camber (fhz): it is carload to 1/2 antiarch value of bottom offset maximum value.
The camber f being arranged according to existing methodyAfter the completion of bridge construction, at bridge it is linear with design that linear there are still one
Fixed deviation, reality is linear to will appear apparent downwarp.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide one kind to be used for symmetrical three bridge
Template-setup method in beam rotator construction, can achieve after the completion of rotator construction bridge construction at bridge it is linear with design it is linear
It coincide consistent effect.
To achieve the above objectives, the technical solution adopted by the present invention is that: one kind is for symmetrical three across bridge rotating
Template-setup method in construction, comprising the following steps:
S1, the bridge subsection section for determining template-setup；
S2, the bridge subsection section according to template-setup, and the template position of setting calculate the additional camber of bridge at this
fj, add camber fjFor camber fyBias correction；
S3, basis add camber fjObtain the practical camber f of bridge to be poured at template-setup position, practical pre- arch
Spend the calculation formula of f are as follows:
F=fy+fj
In formula, camber fy=fsg+fyy+fhz, fsgFor construction stage camber, fyyFor operation stage camber, fhzFor
Mobile load camber；
S4, the height H that bracket at construction stage position is calculated according to practical camber f set up branch according to the height H of bracket
Frame, and complete the setting to template.
Based on the above technical solution, in step S2, as the additional camber f for calculating any position in bridge spanj
When, coordinate system, f are established as coordinate origin using the wherein one end at position both ends in bridge spanjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, x be arranged template to coordinate origin horizontal distance.
Based on the above technical solution, in step S2, as the additional camber f for calculating bridge end bay positionjWhen, with
The wherein one end at bridge end bay position both ends is that coordinate origin establishes coordinate system, fjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, S be bridge end bay in
It is the mould of setting that the horizontal distance that coordinate origin is arrived at the maximum height of bracket, formula S=nLb, and 0 < n < 1, x, which is arranged,
Horizontal distance of the plate to coordinate origin.
Based on the above technical solution, when using one end far from position in bridge span in bridge end bay as coordinate origin
Coordinate system is established, camber f is addedjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, S be bridge end bay in
It is the mould of setting that the horizontal distance that coordinate origin is arrived at the maximum height of bracket, formula S=nLb, and 0 < n < 1, x, which is arranged,
Horizontal distance of the plate to coordinate origin.
Based on the above technical solution, when using one end far from position in bridge span in bridge end bay as coordinate origin
When establishing coordinate system,fjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, x be setting template to seat
Mark the horizontal distance of origin.
Based on the above technical solution, when using one end in bridge end bay close to position in bridge span as coordinate origin
Establish coordinate system, the additional camber f of bridge end bay positionjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, S be bridge end bay in
It is the mould of setting that the horizontal distance that coordinate origin is arrived at the maximum height of bracket, formula S=nLb, and 0 < n < 1, x, which is arranged,
Horizontal distance of the plate to coordinate origin.
Based on the above technical solution, when using one end in bridge end bay close to position in bridge span as coordinate origin
When establishing coordinate system, andThe additional camber f of bridge end bay positionjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, x be setting template to seat
Mark the horizontal distance of origin.
Based on the above technical solution, the additional camber at span centre section support height maximum position is
Based on the above technical solution, the additional camber at end bay support height maximum position is
Based on the above technical solution, in step S4, the calculation formula of support height H at construction stage position are as follows:
H=H0+f+fz
In formula, H0For bracket Theoretical Design height value, fzFor the deflection of bracket in construction.
Compared with the prior art, the advantages of the present invention are as follows:
(1) it is of the invention it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique, pass through meter
Additional camber during bridge erection is calculated, makes linear to coincide one with designing at bridge is linear after the completion of rotator construction bridge construction
It causes.
Detailed description of the invention
Fig. 1 is the curvilinear function schematic diagram that camber is added in the embodiment of the present invention.
In figure: the additional camber curve of 1- bridge end bay, the additional camber curve of position in 2- bridge span.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the embodiment of the present invention provides one kind for symmetrical three across template in Bridge Rotation Construction Technique
Setting method, comprising the following steps:
S1, the bridge subsection section for determining template-setup；
S2, the bridge subsection section according to template-setup, and the template position of setting calculate the additional camber of bridge at this
fj, add camber fjFor camber fyBias correction；
S3, basis add camber fjObtain the practical camber f of bridge to be poured at template-setup position, practical pre- arch
Spend the calculation formula of f are as follows:
F=fy+fj
In formula, camber fy=fsg+fyy+fhz, fsgFor construction stage camber, fyyFor operation stage camber, fhzFor
Mobile load camber, wherein fsg、fyyAnd fhzFor common knowledge, tired state is not added herein；
S4, the height H that bracket at construction stage position is calculated according to practical camber f, bracket is high at construction stage position
Spend the calculation formula of H are as follows:
H=H0+f+fz
In formula, H0For bracket Theoretical Design height value, fzFor the deflection of bracket in construction, set up according to the height H of bracket
Bracket, and complete the setting to template.
Wherein, in order to guarantee falsework measurement height error must not exceed 1mm, it is contemplated that day and night temperature, at night
Subject to 12 points of form heights measured to 4:00 AM；By to camber fyDeviation carry out calculate correct obtain it is additional pre-
Camber carrys out the camber f that completion calculates in the prior artyExisting error, the bridge after capable of making forming are linearly linear with design
It coincide consistent, guarantees that the tangent slope at pier top two sides curve joint and maximum camber is zero, it is smooth to meet structure
It is required that.
Further, in step S2, as the additional camber f for calculating any position in bridge spanjWhen, that is, it calculates in Fig. 1
The additional camber f of curve 2j, coordinate system, f are established as coordinate origin using the wherein one end at position both ends in bridge spanjCalculating
Formula are as follows:
In formula, La is the across footpath of position in bridge span, and x is the template of setting to the horizontal distance of coordinate origin, by upper
It states formula and calculates the additional camber f for being located at the bridge in bridge span at the template position to be set up of positionj, thus completion pair
Camber f in position in bridge spanyExisting error is corrected, the linear and design lines of position in the bridge span after guaranteeing forming
Shape is coincide consistent.
Further, in step S2, as the additional camber f for calculating bridge end bay positionjWhen, that is, calculate curve 1 in Fig. 1
Additional camber fj, coordinate system, f are established as coordinate origin using the wherein one end at bridge end bay position both endsjCalculation formula
Are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, S be bridge end bay in
It is the mould of setting that the horizontal distance that coordinate origin is arrived at the maximum height of bracket, formula S=nLb, and 0 < n < 1, x, which is arranged,
Plate is calculated by above-mentioned formula and is located at the template position to be set up of bridge end bay position to the horizontal distance of coordinate origin
The additional camber f of bridgej, to complete to bridge end bay position camber fyExisting error is corrected, after guaranteeing forming
Bridge end bay position it is linear with design it is linear coincide it is consistent.
When establishing coordinate system as coordinate origin using one end far from position in bridge span in bridge end bay, camber f is addedj
Calculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, S be bridge end bay in
It is the mould of setting that the horizontal distance that coordinate origin is arrived at the maximum height of bracket, formula S=nLb, and 0 < n < 1, x, which is arranged,
Horizontal distance of the plate to coordinate origin.
When establishing coordinate system as coordinate origin using one end far from position in bridge span in bridge end bay,fj
Calculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, x be setting template to seat
Mark the horizontal distance of origin.
When using coordinate system, bridge end bay position are established as coordinate origin in one end of position in the bridge span in bridge end bay
Additional camber fjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, S be bridge end bay in
It is the mould of setting that the horizontal distance that coordinate origin is arrived at the maximum height of bracket, formula S=nLb, and 0 < n < 1, x, which is arranged,
Horizontal distance of the plate to coordinate origin.
When to establish coordinate system as coordinate origin close to one end of position in bridge span in bridge end bay, and
The additional camber f of bridge end bay positionjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, Lb be bridge end bay position across footpath, x be setting template to seat
Mark the horizontal distance of origin, whereinFor the end bay construction of conventional symmetrical three bridges beam.
Wherein, the additional camber at span centre section support height maximum position isEnd bay support height dominant bit
The additional camber at the place of setting is
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. one kind is for symmetrical three across template-setup method in Bridge Rotation Construction Technique, which is characterized in that including following step
It is rapid:
S1, the bridge subsection section for determining template-setup；
S2, the bridge subsection section according to template-setup, and the template position of setting calculate the additional camber f of bridge at thisj, attached
Add camber fjFor camber fyBias correction；
S3, basis add camber fjThe practical camber f of bridge to be poured at template-setup position is obtained, practical camber f's
Calculation formula are as follows:
F=fy+fj
In formula, camber fy=fsg+fyy+fhz, fsgFor construction stage camber, fyyFor operation stage camber, fhzIt is pre- for mobile load
Camber；
S4, the height H that bracket at construction stage position is calculated according to practical camber f, according to the height H erect bracket of bracket,
And setting of the completion to template.
2. it is as described in claim 1 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, in step S2, as the additional camber f for calculating any position in bridge spanjWhen, with position both ends in bridge span
Wherein one end is that coordinate origin establishes coordinate system, fjCalculation formula are as follows:
In formula, La be bridge span in position across footpath, x be arranged template to coordinate origin horizontal distance.
3. it is as described in claim 1 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, in step S2, as the additional camber f for calculating bridge end bay positionjWhen, wherein with bridge end bay position both ends
One end is that coordinate origin establishes coordinate system, fjCalculation formula are as follows:
In formula, La is the across footpath of position in bridge span, and Lb is the across footpath of bridge end bay position, and S is to be placed in bridge end bay
The template that the horizontal distance of coordinate origin, formula S=nLb, and 0 < n < 1, x are setting is arrived at the maximum height of bracket to arrive
The horizontal distance of coordinate origin.
4. it is as claimed in claim 3 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, when establishing coordinate system as coordinate origin using one end far from position in bridge span in bridge end bay, adds camber
fjCalculation formula are as follows:
In formula, La is the across footpath of position in bridge span, and Lb is the across footpath of bridge end bay position, and S is to be placed in bridge end bay
The template that the horizontal distance of coordinate origin, formula S=nLb, and 0 < n < 1, x are setting is arrived at the maximum height of bracket to arrive
The horizontal distance of coordinate origin.
5. it is as claimed in claim 4 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, when establishing coordinate system as coordinate origin using one end far from position in bridge span in bridge end bay,
fjCalculation formula are as follows:
In formula, La is the across footpath of position in bridge span, and Lb is the across footpath of bridge end bay position, and x is that the template of setting is former to coordinate
The horizontal distance of point.
6. it is as claimed in claim 3 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, when using coordinate system, bridge end bay position are established as coordinate origin in one end of position in the bridge span in bridge end bay
The additional camber f setjCalculation formula are as follows:
In formula, La is the across footpath of position in bridge span, and Lb is the across footpath of bridge end bay position, and S is to be placed in bridge end bay
The template that the horizontal distance of coordinate origin, formula S=nLb, and 0 < n < 1, x are setting is arrived at the maximum height of bracket to arrive
The horizontal distance of coordinate origin.
7. it is as claimed in claim 6 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, when to establish coordinate system as coordinate origin close to one end of position in bridge span in bridge end bay, andThe additional camber f of bridge end bay positionjCalculation formula are as follows:
In formula, La is the across footpath of position in bridge span, and Lb is the across footpath of bridge end bay position, and x is that the template of setting is former to coordinate
The horizontal distance of point.
8. it is as described in claim 1 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
Be characterized in that: the additional camber at span centre section support height maximum position is
9. it is as claimed in claim 8 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
Be characterized in that: the additional camber at end bay support height maximum position is
10. it is as described in claim 1 it is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique,
It is characterized in that, in step S4, the calculation formula of support height H at construction stage position are as follows:
H=H0+f+fz
In formula, H0For bracket Theoretical Design height value, fzFor the deflection of bracket in construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810941521.5A CN109306666A (en) | 2018-08-17 | 2018-08-17 | It is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810941521.5A CN109306666A (en) | 2018-08-17 | 2018-08-17 | It is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109306666A true CN109306666A (en) | 2019-02-05 |
Family
ID=65224101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810941521.5A Pending CN109306666A (en) | 2018-08-17 | 2018-08-17 | It is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109306666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820586A (en) * | 2019-11-28 | 2020-02-21 | 上海宝冶市政工程有限公司 | Bridge installation positioning method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942805A (en) * | 2010-09-17 | 2011-01-12 | 广州瀚阳工程咨询有限公司 | Three-dimensional numerical control method for bridge section precasting technology |
| CN104392148A (en) * | 2014-12-15 | 2015-03-04 | 重庆交通大学 | Method for setting pre-camber of special cable-stayed bridge for long-span rail |
-
2018
- 2018-08-17 CN CN201810941521.5A patent/CN109306666A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942805A (en) * | 2010-09-17 | 2011-01-12 | 广州瀚阳工程咨询有限公司 | Three-dimensional numerical control method for bridge section precasting technology |
| CN104392148A (en) * | 2014-12-15 | 2015-03-04 | 重庆交通大学 | Method for setting pre-camber of special cable-stayed bridge for long-span rail |
Non-Patent Citations (2)
| Title |
|---|
| LBPGXX: "曲线 宽箱梁 转体桥 施工控制", 《百度文库》 * |
| 山西省质量技术监督局: "《山西省地方标准》", 31 December 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820586A (en) * | 2019-11-28 | 2020-02-21 | 上海宝冶市政工程有限公司 | Bridge installation positioning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111155383B (en) | Large-span self-anchored steel box girder suspension bridge track lofting and measuring method | |
| CN101280549B (en) | Construction method of mobile type bracket subsection cast-in-situ continuous beam | |
| CN106436592B (en) | A kind of bridge using Z bar plate connector spells wide construction and its construction method | |
| CN106192717B (en) | Bridge steel and concrete mixing section and its installation method | |
| CN104060544A (en) | Construction technology of pipeline suspension cable span bridge body installation | |
| CN106245467A (en) | A kind of paving frame method assembling board-like track structure | |
| CN103046476A (en) | Railway long-span rotator T-shaped bridge construction method | |
| CN102877421B (en) | Construction control method capable of realizing unstressed line shapes of pushing construction beam bodies at high accuracy | |
| CN112323654A (en) | Bridge full-prefabrication widening method | |
| CN206298836U (en) | A kind of bridge of use Z bar plate connector spells construction wide | |
| CN109306666A (en) | It is a kind of for symmetrical three across the template-setup method in Bridge Rotation Construction Technique | |
| CN208456625U (en) | A kind of tunnel lining trolley automatic measurement regulating device | |
| KR102161144B1 (en) | Height-adjustable transporter for bridge construction and bridge construction method using it | |
| CN206289470U (en) | A kind of urban track traffic Prefabricated slab type track | |
| CN111676742B (en) | Deviation rectifying method for CRTS III plate type ballastless track structure | |
| CN108425321A (en) | A kind of installation method of Novel variable-section bridge linear controller | |
| CN110872807A (en) | Construction method of steel temporary bridge and steel temporary bridge | |
| CN113846547A (en) | Existing river-crossing bridge and newly-built embankment connection structure and construction method thereof | |
| CN208777175U (en) | A kind of overlapping constructing device of I-shaped steel reinforced concrete combination beam concrete | |
| CN107119568A (en) | A kind of high-level bridge construction method | |
| CN203530865U (en) | Long-connection bridge widening splicing structure | |
| CN107419833A (en) | A kind of annular two-way double helix prestressing without bondn cored slab track construction method | |
| CN219410569U (en) | Steel-concrete combined truss girder | |
| Barker | Construction Techniques for Segmental Concrete Bridges | |
| CN213772885U (en) | Pedestrian overpass using viaduct bridge pier as support |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190205 |