CN104929047B - A kind of V-type pier outer support construction method - Google Patents
A kind of V-type pier outer support construction method Download PDFInfo
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- CN104929047B CN104929047B CN201510311057.8A CN201510311057A CN104929047B CN 104929047 B CN104929047 B CN 104929047B CN 201510311057 A CN201510311057 A CN 201510311057A CN 104929047 B CN104929047 B CN 104929047B
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- 238000010276 construction Methods 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims description 18
- 244000035744 Hura crepitans Species 0.000 claims description 13
- 238000009415 formwork Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 230000007306 turnover Effects 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
A kind of V-type pier outer support construction method, including preparative work before construction, foundation ditch backfill and process, grade beam truss foundation construction, right angle truss installa-tion, pier reinforcing bar, model sheetinstallat, essence pricks the operations such as coarse thread steel bar installation, V-type pier concreting, V-type pier template, right angle truss dismounting.The present invention uses right angle truss and the finish rolling deformed bar integrated application to drawing two kinds of construction technologies, individual event construction technology is simple, easily operated, compared with conventional construction method, ensure that V-type pier keeps globality not produce extra moment of flexure without bigger turnover component through battered leg self and bottom, more will not produce crack；Less input for circulation material.Ensure construction safety simultaneously, improved construction speed, reduce construction cost.
Description
Technical field
The present invention relates to bridge construction construction technique field, specifically ephemeral stream and overbridge
Beam V-type pier right angle truss outer support construction method.
Background technology
Along with economic great development, the traffic base such as highway, town road builds Fast Construction.
Road construction by river, gully, Lu Yulu intersect etc. be both needed to build bridge, especially municipal administration bridge
Beam is built not only to meet and is used function, considers city look of the city simultaneously.Numerous bridge pier columns are tied
In configuration formula, V-type pier is novel in design light and handy, but during construction, owing to V-type pier root is relatively thin,
During battered leg construction, it is had a negative impact；And when pouring with V-type pier battered leg intersection girder,
V-type pier battered leg root can be produced secondary effect again.This construction method uses purlin, V-type pier right angle
Frame outer support coordinates finish rolling coarse thread steel bar symmetry drawknot right angle truss mode, effectively solves
V-type pier root stress problem, to ensureing construction safety, accelerating construction progress, reduction is constructed into
Originally have great significance.
Summary of the invention
The purpose of the present invention, is to provide a kind of safe and reliable, and speed of application is fast, saves resource
V-type pier stud construction method.
The technical scheme is that
A kind of V-type pier outer support construction method, comprises the steps:
1, foundation ditch backfill and process
In cushion cap foundation ditch, graded gravel is backfilled, by foundation ditch before backfill after bearing platform construction
Eliminating impurities is clean.Back-filling in layers, every layer thickness is not more than 20cm, and compaction in layers rolls,
Compactness reaches more than 98% can fill last layer.It is backfilling into design grade beam (truss basis) end
Surfacing is carried out after absolute altitude.
2, grade beam (truss basis) construction
Grade beam cross dimensions is 750 × 750mm.Cushion cap foundation ditch backfilled after by survey crew
Provide grade beam design and construction position (truss is in place), need before concreting again to survey and set grade beam
After construction location, sandbox reserved location, truss back position are errorless, carry out casting concrete.
Correct embedment truss before concrete initial set, fixing bar built-in fitting.
3, right angle truss installa-tion
After design size segmentation blanking, square steel be connected by welding, weldquality press three grades
Above standard controls.
Right angle truss installa-tion pre-test personnel provide the exact position of truss again, and place sandbox
(regulation height, it is simple to dismounting), sandbox first presses closely through reaction frame before using.By multiple
Right angle truss is respectively placed in the setting position on sandbox.The every side of right angle truss installa-tion order in place by
Outer to interior or from the inside to the outside, first install in place after, uses four points of steel wire ropes connection purlins, right angle
Frame fixes right angle truss with the pre-buried anchor ring on grade beam；After second right angle truss installa-tion is in place,
Installing the connecting rod between two right angle in place truss, connecting rod connects right angle truss and uses bolt,
Fixing right angle Truss Steel cord does not releases；3rd right angle truss, the 4th right angle truss are installed,
Between third and fourth truss, connecting rod is installed and is fully completed, centre once will connect to both sides
The fastening of bar bolt puts in place, then releases steel wire rope.Again check truss installa-tion position, right angle, close
With on space between C20 concreting truss and rear backrest welded truss and grade beam after lattice
Embedded ribs.
4, V-type pier reinforcing bar, model sheetinstallat
Lay horizontal stupefied inside right angle truss, use 16# channel-section steel, carry out subsequently steel form install and
Reinforcing bar binding works, and essence is pricked after completing spiral fastening, carries out concrete after being fully completed
Pour work.
During the construction of V-type pier, in the range of V-type pier, outer erection construction scaffold and up-downgoing construction walk
Road, construction scaffolding uses fastener type steel pipe scaffold, uses platform springboard completely to spread.
V-type pier template uses set shaped steel formwork 1.5 meters × 1.0 meters, and between template, connected mode is adopted
It is connected with, between inner and outer template, uses M14 split bolt to be attached.
Pier foundation and variable cross-section use prefabricated abnormal formwork；Other position uses set shaped steel formwork
1.5 meters × 1.0 meters.
Model sheetinstallat order is: 1, pier foundation model sheetinstallat；2, after right angle truss installa-tion is in place,
Truss is pressed design attitude back cord is installed, then V-type pier battered leg exterior sheathing is installed；3、V
After type pier battered leg reinforcement installation completes, variable-cross-section special shaped template is installed；4, install in V-type pier
Template, template back arris in installing, split bolt M14 fastens.
5, essence pricks coarse thread steel bar installation
Essence is pricked coarse thread steel bar and is used φ 32 essence to prick spiral, and grade is PSB830.
After model sheetinstallat completes in V-type pier, φ 32 essence is pricked coarse thread steel bar in place also by design
The order applying the bundle coarse thread steel bar installation of pretension essence is carried out from the bottom to top along V-type pier height, altogether
Five roads are installed.Direction across bridge every pair right angle truss is respectively mounted essence and pricks coarse thread steel bar.
6, V-type pier concreting
Concrete one-time-concreting to 15cm under pier and beam junction, two battered legs placement layer by layer simultaneously,
Use internal vibration rod to be aided with attached vibrator to vibrate.
7, V-type pier template, right angle truss are removed
Treat that the girder pre-stressed slip casting of upper tank completes to reach 100% purlin, dismountable V-type pier right angle, rear
Frame.First removal finish rolling coarse thread steel bar, abolishes the concrete between truss and rear backrest, then
Removal sandbox, right angle truss and V-type pier battered leg spacing reach to remove exterior sheathing, back cord,
Finally remove right angle truss.
Advantages of the present invention
The present invention is by using V-type pier right angle truss outer support to coordinate finish rolling coarse thread steel bar
Symmetrical drawknot right angle truss mode, effectively solves V-type pier root stress problem, and guarantee is executed
The safety of work, shortens the construction period, has saved construction cost.
Accompanying drawing illustrates:
Fig. 1 is construction technology process schematic diagram.
Detailed description of the invention
A kind of V-type pier outer support construction method, specifically includes the following step:
1, foundation ditch backfill and process
Before backfill, the foreign material (soil block, woven bag, benzene plate etc.) in foundation ditch are removed clean.
Back-filling in layers graded gravel, every layer of backfill thickness≤20cm, compaction in layers rolls, and compactness reaches
More than 98% can fill last layer.Note after being backfilling into design grade beam (truss basis) end absolute altitude
Meaning surfacing.
2, grade beam (truss basis) construction
Cushion cap foundation ditch backfilled after by survey crew be given grade beam (cross dimensions is 750 ×
750mm) design and construction position (truss is in place), reinforcing bar, template and concrete construction perform bridge
Beam foundation construction code requirement.Need before concreting again to survey and set grade beam construction location, sandbox
Can casting concrete after reserved location, truss back position are errorless.Before concrete initial set accurately
Bar built-in fitting fixed by pre-buried truss.
3, right angle truss installa-tion
Right angle truss is entrusted has the unit of Construction of Steel Structure qualification to process.For ease of transport, on-the-spot
With good conditionsi can produce at the scene.After design size segmentation blanking, square steel be connected by weldering
Connecing, weldquality is controlled by standard above grade 3.In construction and transportation, it is to avoid collide with straight
Angle truss is in order to avoid causing the damage of load-bearing rod member or causing carrying disadvantageous deformation etc..
Right angle truss installa-tion pre-test personnel again provide the exact position of truss and place sandbox
(regulation height, it is simple to dismounting), sandbox first presses closely through reaction frame before using.Use 25T
Autocrane makes truss be located on sandbox and and uses hydraulic jack fine setting to design
Position.The every side of right angle truss installa-tion order in place from outside to inside or from the inside to the outside, first installation
After in place, four points of steel wire rope truss frame for connectings are used to fix truss with the pre-buried anchor ring on grade beam；The
After two truss installa-tion are in place, installing the connecting rod between two right angle in place truss, connecting rod is even
Connecing truss uses bolt, fixing Truss Steel cord not to release；Install the 3rd right angle truss,
Four right angle truss, between third and fourth truss connecting rod install be fully completed, by centre to
It (is only bolt to screw half i.e. in installation process that connecting-rod bolt fastening is once put in place by both sides
Can), then release steel wire rope.Again check truss installa-tion position, right angle, qualified after use C20
Space welded truss and the embedded ribs on grade beam between concreting truss and rear backrest.
4, pier reinforcing bar, model sheetinstallat
Lay horizontal stupefied (16# channel-section steel) inside right angle truss, carry out steel form installation and reinforcing bar subsequently
Colligation works, and essence is pricked spiral (to drawing reinforcing bar) in place and fasten after completing, the completeest
Concreting work is carried out after one-tenth.
During the construction of V-type pier, in the range of V-type pier, outer erection construction scaffold and up-downgoing construction walk
Road, construction scaffolding uses fastener type steel pipe scaffold, uses platform springboard completely to spread.
V-type pier pier foundation and variable cross-section use the abnormal formwork of customization；Other position uses customization
Set shaped steel formwork 1.5 meters × 1.0 meters, between template, connected mode is with bolts, inside and outside
M14 split bolt is used to be attached between template.
Model sheetinstallat order is: 1, pier foundation model sheetinstallat；2, after right angle truss installa-tion is in place,
Truss is pressed design attitude back cord is installed, then V-type pier battered leg exterior sheathing is installed；3、V
After type pier battered leg reinforcement installation completes, variable-cross-section special shaped template is installed；4, install in V-type pier
Template, template back arris in installing, split bolt M14 fastens.
Pier model sheetinstallat abnormal formwork is installed by hand fit's crane, and typified form is with manually installed
It is main.
5, essence pricks coarse thread steel bar installation
Essence is pricked coarse thread steel bar and is used φ 32 essence to prick spiral, and grade is PSB830.
After model sheetinstallat completes in V-type pier, φ 32 essence is pricked coarse thread steel bar in place also by design
Applying pretension, after prestretching, the position of truss, the position of V-type pier template all set at design drawing
In meter site error allowed band.
Essence is pricked the order of coarse thread steel bar installation and is carried out from the bottom to top along V-type pier height, installs five altogether
Road.Direction across bridge every pair right angle truss is respectively mounted essence and pricks coarse thread steel bar.
6, V-type pier concreting
Concrete uses concrete mixer one-time-concreting to pier and 15cm under beam junction, and two is oblique
Leg placement layer by layer simultaneously, uses internal vibration rod to be aided with attached vibrator and vibrates.
7, V-type pier template, right angle truss are removed
Treat that the girder pre-stressed slip casting of upper tank completes to reach 100% purlin, dismountable V-type pier right angle, rear
Frame.First removal finish rolling coarse thread steel bar, abolishes the concrete between truss and rear backrest, then
Removal sandbox, right angle truss and V-type pier battered leg spacing reach to remove exterior sheathing, back cord,
Finally remove right angle truss.
Claims (1)
1. a V-type pier outer support construction method, it is characterised in that comprise the steps:
(1) foundation ditch backfill and process
In cushion cap foundation ditch, graded gravel is backfilled, by foundation ditch before backfill after bearing platform construction
Eliminating impurities is clean；Back-filling in layers, every layer thickness is not more than 20cm, and compaction in layers rolls,
Compactness reaches more than 98% can fill last layer；Table is carried out after being backfilling into design ground bottom elevation
Face is smooth；
(2) grade beam construction
Grade beam cross dimensions is 750 × 750mm；Cushion cap foundation ditch backfilled after by survey crew
Provide grade beam design and construction position, need before concreting again to survey and set grade beam construction location, sand
After case reserved location, truss back position are errorless, carry out casting concrete；Before concrete initial set
Correct embedment truss, fixing bar built-in fitting；
(3) right angle truss installa-tion
After design size segmentation blanking, square steel be connected by welding, weldquality press three grades
Above standard controls；
Right angle truss installa-tion pre-test personnel provide the exact position of truss again, and place sand
Case, sandbox first presses closely through reaction frame before using；Multiple right angles truss is respectively placed in sandbox
On setting position；The every side of right angle truss installa-tion order in place from outside to inside or from the inside to the outside,
After one installation is in place, four points of steel wire ropes are used to connect right angle truss and the pre-buried anchor ring on grade beam
Fixing right angle truss；After second right angle truss installa-tion is in place, two right angle in place truss are installed
Between connecting rod, connecting rod connects right angle truss and uses bolt, and fixing right angle Truss Steel cord is not
Release；3rd right angle truss, the 4th right angle truss are installed, between third and fourth truss
Connecting rod is installed and is fully completed, centre once connecting-rod bolt fastening put in place, so to both sides
Rear releasing steel wire rope；Again check truss installa-tion position, right angle, qualified after water with C20 concrete
Build space between truss and rear backrest welded truss and the embedded ribs on grade beam；
(4) V-type pier reinforcing bar, model sheetinstallat
Lay horizontal stupefied inside right angle truss, use 16# channel-section steel, carry out subsequently steel form install and
Reinforcing bar binding works, and essence is pricked after completing spiral fastening, carries out concrete after being fully completed
Pour work；
During the construction of V-type pier, in the range of V-type pier, outer erection construction scaffold and up-downgoing construction walk
Road, construction scaffolding uses fastener type steel pipe scaffold, uses platform springboard completely to spread；
V-type pier template uses set shaped steel formwork 1.5 meters × 1.0 meters, and between template, connected mode is adopted
It is connected with, between inner and outer template, uses M14 split bolt to be attached；
Pier foundation and variable cross-section use prefabricated abnormal formwork；Other position uses set shaped steel formwork
1.5 meters × 1.0 meters；
Model sheetinstallat order is: 1, pier foundation model sheetinstallat；2, after right angle truss installa-tion is in place,
Truss is pressed design attitude back cord is installed, then V-type pier battered leg exterior sheathing is installed；3、V
After type pier battered leg reinforcement installation completes, variable-cross-section special shaped template is installed；4, install in V-type pier
Template, template back arris in installing, split bolt M14 fastens；
(5) essence pricks coarse thread steel bar installation
Essence is pricked coarse thread steel bar and is used φ 32 essence to prick spiral, and grade is PSB830；
After model sheetinstallat completes in V-type pier, φ 32 essence is pricked coarse thread steel bar in place also by design
The order applying the bundle coarse thread steel bar installation of pretension essence is carried out from the bottom to top along V-type pier height, altogether
Five roads are installed；Direction across bridge every pair right angle truss is respectively mounted essence and pricks coarse thread steel bar；
(6) V-type pier concreting
Concrete one-time-concreting to 15cm under pier and beam junction, two battered legs placement layer by layer simultaneously,
Use internal vibration rod to be aided with attached vibrator to vibrate；
(7) V-type pier template, right angle truss are removed
Treat that the girder pre-stressed slip casting of upper tank completes to reach 100% purlin, dismountable V-type pier right angle, rear
Frame；First removal finish rolling coarse thread steel bar, abolishes the concrete between truss and rear backrest, then
Removal sandbox, right angle truss and V-type pier battered leg spacing reach to remove exterior sheathing, back cord,
Finally remove right angle truss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510311057.8A CN104929047B (en) | 2015-06-09 | 2015-06-09 | A kind of V-type pier outer support construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510311057.8A CN104929047B (en) | 2015-06-09 | 2015-06-09 | A kind of V-type pier outer support construction method |
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| CN104929047A CN104929047A (en) | 2015-09-23 |
| CN104929047B true CN104929047B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106437746A (en) * | 2016-10-10 | 2017-02-22 | 中国水利水电第十四工程局有限公司 | Construction method and construction device of underground cavity high-side wall facing concrete |
| CN106677069B (en) * | 2016-12-28 | 2018-04-06 | 杭州江润科技有限公司 | A kind of construction method of bridge pier integral formwork support one-shot forming structure |
| CN107938516B (en) * | 2017-11-16 | 2019-08-23 | 华蓝设计（集团）有限公司 | Shaped pier structure battered leg temporary support installation security method for dismounting |
| CN109024286B (en) * | 2018-07-10 | 2020-09-01 | 中铁大桥局集团第一工程有限公司 | Construction method for cast-in-situ V-shaped pier of concrete support wall |
| CN110029559A (en) * | 2019-05-24 | 2019-07-19 | 中国十七冶集团有限公司 | A kind of gutter slding form operation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006070679A (en) * | 2004-09-01 | 2006-03-16 | Yoshisuke Kamiya | Continuous girder bridge in which triangle structures having damping/supporting devices at lower ends are connected by girder |
| RU2291242C1 (en) * | 2005-08-15 | 2007-01-10 | Юрий Иванович Файко | Bridge structure |
| CN202323772U (en) * | 2011-12-02 | 2012-07-11 | 中国建筑第七工程局有限公司 | Upside-down hanging construction device for steel stranded wires of bridge V-shaped support |
| CN202954299U (en) * | 2012-10-16 | 2013-05-29 | 上海城建市政工程（集团）有限公司 | Template support structure for large-angle V-shaped pier and No.0 block of continuous rigid framework bridge |
| CN104120649B (en) * | 2014-08-13 | 2015-12-16 | 江苏中设集团股份有限公司 | Have the anti-thrust force protection wall of end of the bridge without end carriage V-type rigid frame bridge |
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