CN104878694B - A kind of simple deck paving absolute altitude control method - Google Patents
A kind of simple deck paving absolute altitude control method Download PDFInfo
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- CN104878694B CN104878694B CN201510247911.9A CN201510247911A CN104878694B CN 104878694 B CN104878694 B CN 104878694B CN 201510247911 A CN201510247911 A CN 201510247911A CN 104878694 B CN104878694 B CN 104878694B
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Abstract
The invention belongs to the technical field of bridge on highway Roadway Construction, be specifically related to a kind of simple deck paving absolute altitude control method.The present invention is to solve in former tradition Surfacing Construction, first pour bridge floor twice longitudinal direction construction joint that 1m width absolute altitude band brought, design horizontal wall inscription cannot accurately be made by absolute altitude band, can not be by a difficult problem for design and construction, provide a kind of simple deck paving absolute altitude control method, including being connected, by support bar and collet, the H type bracket formed and being installed on uncovered interior channel-section steel above bracket, channel-section steel end face is as deck paving absolute altitude.Absolute altitude of the present invention will not produce construction joint after deck paving completes, compared with the method for traditional bridge floor both sides cast-in-place absolute altitude band, improve deck paving absolute altitude precision and flatness, shorten the construction period, also can be suitably used for the bridge of horizontal wall inscription, and channel-section steel can act recycling when the face of receipts, construction cost is low.
Description
Technical field
The invention belongs to the technical field of bridge on highway Roadway Construction, be specifically related to a kind of simple deck paving mark
High control method.
Background technology
Along with developing rapidly of highway, science of bridge building is extensively applied in highway, and deck paving quality is bridge
How the pith of construction quality, ensure that the globality of deck paving, the accuracy of construction elevation and speed of application are bridges
The difficult problem faced in the pavement construction of face.Traditional bridge floor form of construction work is first to pour into a mould 1m width absolute altitude band, but which is at bridge
Twice longitudinal direction construction joint can be produced after surface construction, and design horizontal wall inscription cannot accurately be made by this absolute altitude band, it is impossible to by design and construction, lead
Causing to use the bridge having horizontal wall inscription when this absolute altitude band is made flat, designing institute and owner the most clearly prohibit the use of the method
Carry out Roadway Construction.Therefore, how to carry out deck paving absolute altitude and control to be urgent problem in Roadway Construction.
Summary of the invention
The present invention is to solve in former tradition Surfacing Construction, first pour the bridge floor twice that 1m width absolute altitude band brought and indulge
Design horizontal wall inscription cannot be accurately made, it is impossible to by a difficult problem for design and construction, it is provided that a kind of simple bridge floor to construction joint, absolute altitude band
Mat formation absolute altitude control method.
The present invention adopts the following technical scheme that
A kind of simple deck paving absolute altitude control method, described absolute altitude includes being connected, by support bar and collet, the H formed
Type bracket and be installed on H type bracket epimere uncovered in channel-section steel, channel-section steel end face is deck paving absolute altitude, the concrete control of this absolute altitude
Process processed is:
A, section is set: to cleaning out and complete the bridge floor of reinforced mesh, use total powerstation at vertical bridge floor center
The direction of line releases also marking path bridge floor centrage and is respectively a point and the b point of L1, L2, and described a point and b point are relative to bridge floor
Centrage heteropleural, then determines section I to a point and b point by 2 bracing wire methods, then by preceding method along bridge floor length direction
A section is determined every 5m；
B, determine the absolute altitude band strong point: at a point on cross sections and b point along vertical bridge floor centrage direction respectively
Draw two points and two points of distance b point L3 of distance a point L3, as the absolute altitude band strong point on corresponding section, then to respectively
Determined four hookup wires of absolute altitude band, a by bracing wire with the absolute altitude band strong point on the direction of bridge floor centerline parallel on section
The hookup wire of some both sides is for installing an absolute altitude band, and the hookup wire of b point both sides is used for installing another absolute altitude band, then respectively
Along bridge floor length direction, the absolute altitude band strong point is set with the interval encryption of 0.5m on hookup wire；
C, installed height mark band support bar: use impact to bore and the most encrypted good absolute altitude band strong point is holed, and
At each absolute altitude band strong point, support bar is vertically installed；
D, levelling support bar install floor elevation: along the direction with bridge floor centerline parallel, to the bridge installed at support bar
Face is pressed 10m spacing and is arranged and labelling relief, then each relief is carried out levelling；
E, installation collet: utilize collet to will be located on same section and be marked with two support bars connections of relief, institute
State two support bars that cross section perpendicular is connected on bridge floor centrage and each section and be positioned at bridge floor centrage the same side, form two
Bar cross section is the bracket of H type；
F, installed height mark control channel-section steel: be directed downward with notch by channel-section steel and lie against the uncovered interior collet of H type bracket epimere
On, and channel-section steel side is welded with the support bar of this side, channel-section steel lower end and collet gapless after welding, channel-section steel end face is bridge floor paving
Dress absolute altitude；
G, absolute altitude repetition measurement: the most mounted absolute altitude band is carried out snap shot repetition measurement, if error exceedes ± 2mm, use DS-32
Absolute altitude is finely adjusted until qualified by type level gauge；
H, recovery channel-section steel: play channel-section steel when face received by deck paving, recycle.
Described support bar and collet are spiral.
Described unwrapping wire distance L1 that arranges in section step, L2 are the 1/6 to 1/4 of bridge deck width.
Described L3 is 1/2 that the waist of channel-section steel is high.
After described channel-section steel installation, channel-section steel end face is higher than vertical supporting masthead face.
There is advantages that
1, absolute altitude of the present invention will not produce construction joint after deck paving completes, it is ensured that the globality of bridge floor,
After construction, bridge floor is more smooth, effect is more attractive；
2, absolute altitude control method of the present invention also can be suitably used for the bridge of horizontal wall inscription, and simple operation, operation strategies are wide；
3, absolute altitude of the present invention is control realization on the former reinforced mesh completed, be carry out on whole bridge floor close
After collection bracing wire, Construction control determines, after having constructed, measures its flatness, and mean gap is less than 3mm, with traditional bridge floor two
The construction method of the absolute altitude band that the cast-in-place 1m in side is wide is compared, and precision is higher, and the flatness that improve Roadway Construction quality and bridge floor is closed
Lattice rate；
4, compared with the construction method of the absolute altitude band wide with traditional cast-in-place 1m in bridge floor both sides, absolute altitude of the present invention is used
Method can be greatly shortened construction period, by 80 flat be a construction section as a example by, from following table (unit: sky), the duration was by former 7 days
Shorten to 2 days, further shorten construction cost；
| Bar-mat reinforcement is installed | Absolute altitude band makes | Intermittent time | Concreting | |
| Traditional method | 2 | 2 | 2 | 1 |
| The inventive method | 1 | Installing simultaneously with bar-mat reinforcement, having spread can construction elevation band | Nothing | 1 |
5, channel-section steel can also play recycling when face received by deck paving, and the construction cost making the method is lower.
Accompanying drawing explanation
Fig. 1 is the front view of absolute altitude band of the present invention；
Fig. 2 is I sectional drawing in Fig. 1；
In figure: 1-support bar, 2-collet, 3-channel-section steel.
Detailed description of the invention
In conjunction with accompanying drawing, the detailed description of the invention of the present invention is described further:
In deck paving absolute altitude work progress of the present invention, the spiral of preferred a diameter of 12mm is as support bar 1
With collet 2, then it is welded to form H type bracket, selects the channel-section steel (5# channel-section steel) of 5cm to be installed on H type bracket as absolute altitude chain of command
Epimere uncovered in, the concrete control process of this absolute altitude is:
Section is set: to cleaning out and complete the bridge floor of reinforced mesh, use total powerstation at vertical bridge floor centrage
Direction release and marking path bridge floor centrage is respectively a point and the b point of 1.5m, 11m, described a point and b point are positioned in bridge floor
The both sides of heart line, then determine section I to a point and b point by 2 bracing wire methods, then with this stringing method along bridge floor length direction
Arrange every 5m and determine a section, obtain section I, II, III etc. as shown in Figure 1.
Determine the absolute altitude band strong point: at a point on cross sections and b point, the direction along vertical bridge floor centrage is drawn respectively
Go out two points and two points of distance b point 2.5cm of distance a point 2.5cm, as the absolute altitude band strong point on corresponding section, then
To four installations being determined absolute altitude band on each section with the absolute altitude band strong point on the direction of bridge floor centerline parallel by bracing wire
Line (bridge floor centrage both sides are respectively arranged with two hookup wires), two of a point both sides are mounted equidistant line for installing an absolute altitude band, b
Point two of both sides is mounted equidistant line for installing another absolute altitude band, then on each hookup wire along bridge floor length direction with
The interval encryption of 0.5m arranges the absolute altitude band strong point, and the spacing of this strong point selects mainly whether be in vertical curve according to bridge
On, if can suitably encrypt the strong point on vertical curve, with the error of elevation control, the "×" in Fig. 1 is absolute altitude band and supports
Point.
Installed height mark band support bar: use impact to bore and the most encrypted good absolute altitude band strong point is holed, and often
Vertically installing, at the individual absolute altitude band strong point, the support bar 1 that cut is good in advance, support bar 1 uses the spiral of a diameter of 12mm,
The length of support bar 1 is to determine according to Calculation of Thickness of Bridge Deck Pavement and the installing hole degree of depth, such as, if deck paving is 10cm, and installing hole
Deep 2cm, the general value of length of support bar is 11cm, it is ensured that 1cm lower than concrete surface is advisable.
Levelling support bar installs floor elevation: along the direction with bridge floor centerline parallel, to the bridge floor installed at support bar 1
Arrange and labelling relief by 10m spacing, then each relief is carried out levelling.This process is also to use bracing wire method to complete, its
Purpose is that the collet 2 of the follow-up welding of guarantee is the most identical, really in order to make the levelling at each installation support bar 1 the most identical
Protect the precision of the deck paving absolute altitude (channel-section steel end face) finally completed.The spacing of levelling relief is arranged and the absolute altitude band strong point
Arrange according to identical, if also should suitably encrypt on vertical curve.
Collet is installed: utilize collet 2 to will be located on same section and be marked with two support bars 1 of relief and connect, institute
State two support bars 1 that cross section perpendicular is connected on bridge floor centrage and each section and be positioned at bridge floor centrage the same side, formed
The bracket that two cross sections are H type as shown in Figure 2.Collet 2 is also adopted by the spiral of a diameter of 12mm, and the two ends of collet 2 are divided
Do not weld with support bar, it is ensured that stablizing of absolute altitude.
Installed height mark controls channel-section steel: is directed downward with notch by channel-section steel 3 and lies against the uncovered interior collet 2 of H type bracket epimere
On, and channel-section steel 3 side is welded with the support bar 1 of this side, use side welding to tear open when being for the ease of follow-up concrete-face closure
Unload channel-section steel 3, and along at least spot welding 3 of support bar 1 vertical direction during welding, it is ensured that after welding, channel-section steel 3 lower end is with collet 2 continuously
Gap.H type bracket and channel-section steel constitute absolute altitude band, and channel-section steel end face is deck paving absolute altitude.
After channel-section steel installation, channel-section steel end face should be higher than that vertical supporting masthead face, i.e. during welding collet, above cantilevered out collet
The support bar length of part should be less than the lower limb width of selected channel-section steel, and one is to prevent the supporting bar top impact on absolute altitude,
Two is after bridge deck concrete has poured, it is ensured that support bar is embedded in below concrete surface and burying depth not less than 1cm.
In order to ensure the accuracy of absolute altitude, also tackle the absolute altitude installed and carry out snap shot repetition measurement, if the inaccurate (error of absolute altitude
Exceed ± 2mm), DS-32 type level gauge need to be utilized to use the method for level repetition measurement to be finely adjusted.
Channel-section steel rises when face received by deck paving, it is possible to achieve the recycling to channel-section steel, effectively controls construction cost.
Wherein, when arranging section, initial point a and b can select flexibly, takes a point and b point to be positioned at bridge floor centrage
The principle of both sides, a point and b point are not fixed relative to the distance (L1 and L2) of centrage, can adjust according to construction condition, typically
For bridge deck width 1/6 to 1/4；When encrypting the hookup wire of absolute altitude again on the basis of a point and b point, answer with distance L3 of a point, b point
For the waist of selected channel-section steel high 1/2, it is ensured that channel-section steel stablizing on H type bracket, as embodiment is selected 5# channel-section steel, L3 away from
From then corresponding to 2.5cm, the distance between i.e. two support bars is equal with the waist height of channel-section steel, makes two support bars just can be channel-section steel card
Live, it is ensured that it is stable.And the selection of channel-section steel can be various, it is considered to expense and the convenience of installation, its size should be not excessive.
After utilizing absolute altitude band of the present invention that certain bridge is carried out Roadway Construction, sampling observation deck paving flatness data is as follows
Table:
Table 1(1# deck paving flatness monitoring result)
Table 2(2# pavement of bridge deck flatness monitoring result)
Table 3(3# pavement of bridge deck flatness monitoring result)
Table 4(4# bridge deck paving flatness monitoring result)
From table 1 to table 4, the mean gap recorded is less than 3mm, and construction precision is significantly larger than traditional bridge floor both sides
The construction method (mean gap is more than 5mm) of absolute altitude band wide for cast-in-place 1m, improves the flatness of Roadway Construction quality and bridge floor
Qualification rate.
The component or the equipment that do not do specified otherwise in the present invention are prior art.
Claims (5)
1. a simple deck paving absolute altitude control method, connects, including by support bar (1) and collet (2), the H type torr formed
Frame and be installed on H type bracket epimere uncovered in channel-section steel (3), channel-section steel (3) end face is deck paving absolute altitude, it is characterised in that
The concrete control process of this absolute altitude is:
A, section is set: to cleaning out and complete the bridge floor of reinforced mesh, use total powerstation at vertical bridge floor centrage
Direction releases also marking path bridge floor centrage and is respectively a point and the b point of L1, L2, and described a point and b point are relative to bridge floor center
Line heteropleural, then determines section I to a point and b point by 2 bracing wire methods, then by preceding method along bridge floor length direction every
5m determines a section；
B, determine the absolute altitude band strong point: at a point on cross sections and b point, the direction along vertical bridge floor centrage draws respectively
Two points of distance a point L3 and two points of distance b point L3, as the absolute altitude band strong point on corresponding section, then to each section
The absolute altitude band strong point above and on the direction of bridge floor centerline parallel determines four hookup wires of absolute altitude band, a point two by bracing wire
The hookup wire of side is for installing an absolute altitude band, and the hookup wire of b point both sides is used for installing another absolute altitude band, then in each installation
Along bridge floor length direction, the absolute altitude band strong point is set with the interval encryption of 0.5m on line；
C, installed height mark band support bar: use impact to bore and the most encrypted good absolute altitude band strong point is holed, and each
Support bar (1) is vertically installed at the absolute altitude band strong point；
D, levelling support bar install floor elevation: along the direction with bridge floor centerline parallel, to the bridge floor installing support bar (1) place
Arrange and labelling relief by 10m spacing, then each relief is carried out levelling；
E, installation collet: two support bars (1) utilizing collet (2) to will be located on same section and be marked with relief connect,
Two support bars (1) that described cross section perpendicular is connected on bridge floor centrage and each section are positioned at bridge floor centrage the same side,
Form the bracket that two cross sections are H type；
F, installed height mark control channel-section steel: be directed downward with notch by channel-section steel (3) and lie against the uncovered interior collet of H type bracket epimere
(2) on, and channel-section steel (3) side is welded with the support bar (1) of this side, channel-section steel (3) lower end and collet (2) gapless after welding,
Channel-section steel (3) end face is deck paving absolute altitude；
G, absolute altitude repetition measurement: the most mounted absolute altitude band is carried out snap shot repetition measurement, if error exceedes ± 2mm, use DS-32 type water
Absolute altitude is finely adjusted until qualified by quasi-instrument；
H, recovery channel-section steel: play channel-section steel (3) when face received by deck paving, recycle.
Deck paving absolute altitude control method the most according to claim 1, it is characterised in that: described support bar (1) and collet
(2) it is spiral.
Deck paving absolute altitude control method the most according to claim 1, it is characterised in that: described arrange in section step
Unwrapping wire distance L1, L2 are the 1/6 to 1/4 of bridge deck width.
Deck paving absolute altitude control method the most according to claim 1, it is characterised in that: described L3 is the waist of channel-section steel (3)
High 1/2.
Deck paving absolute altitude control method the most according to claim 4, it is characterised in that: described channel-section steel (3) installation
After, channel-section steel (3) end face is higher than vertical supporting bar (1) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510247911.9A CN104878694B (en) | 2015-05-15 | 2015-05-15 | A kind of simple deck paving absolute altitude control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510247911.9A CN104878694B (en) | 2015-05-15 | 2015-05-15 | A kind of simple deck paving absolute altitude control method |
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| CN104878694B true CN104878694B (en) | 2016-10-26 |
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| CN110424266B (en) * | 2019-07-12 | 2021-04-06 | 中国建筑第八工程局有限公司 | Assembled device for controlling bridge deck pavement elevation and elevation control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120029625A (en) * | 2010-09-17 | 2012-03-27 | 변형균 | Construction method of steel composite girder bridge applying precast deck |
| CN202849937U (en) * | 2012-08-20 | 2013-04-03 | 中建七局第一建筑有限公司 | Height marking belt |
| CN104153296A (en) * | 2014-07-29 | 2014-11-19 | 中建四局第五建筑工程有限公司 | Method for increasing bridge deck pavement flatness and comb-shaped form board used by same |
-
2015
- 2015-05-15 CN CN201510247911.9A patent/CN104878694B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120029625A (en) * | 2010-09-17 | 2012-03-27 | 변형균 | Construction method of steel composite girder bridge applying precast deck |
| CN202849937U (en) * | 2012-08-20 | 2013-04-03 | 中建七局第一建筑有限公司 | Height marking belt |
| CN104153296A (en) * | 2014-07-29 | 2014-11-19 | 中建四局第五建筑工程有限公司 | Method for increasing bridge deck pavement flatness and comb-shaped form board used by same |
Non-Patent Citations (3)
| Title |
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| 传统工艺下水泥砼桥面铺装平整度的控制措施;陈国良等;《科技情报开发与经济》;20041231;第14卷(第11期);第288-290页 * |
| 工程质量背景下混凝土桥面铺装施工技术应用;霍本玉;《企业科技与发展》;20131231(第6期);第45-17页 * |
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