CN104695334A - Grouting construction method used for vertical prestressing tendon tubes of bridge and adopting U-shaped connection - Google Patents
Grouting construction method used for vertical prestressing tendon tubes of bridge and adopting U-shaped connection Download PDFInfo
- Publication number
- CN104695334A CN104695334A CN201510013529.1A CN201510013529A CN104695334A CN 104695334 A CN104695334 A CN 104695334A CN 201510013529 A CN201510013529 A CN 201510013529A CN 104695334 A CN104695334 A CN 104695334A
- Authority
- CN
- China
- Prior art keywords
- vertical prestressing
- grouting
- construction method
- construction
- bridge
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 210000002435 tendon Anatomy 0.000 title abstract 8
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 239000011440 grout Substances 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a grouting construction method used for vertical prestressing tendon tubes of a bridge and adopting U-shaped connection. The grouting construction method comprises the following steps: 1, when the vertical prestressing tendons are embedded, two adjacent vertical prestressing tendons are selected and connected through a U-shaped plastic ribbed tube, two ends of the U-shaped plastic ribbed tube are inserted into tubes of the two adjacent vertical prestressing tendons respectively, and the insertion depth is larger than or equal to 20 CM; 2, after concrete placing is finished and the strength meets the design requirement for the tension strength, the prestressing tendons are tensioned vertically, grouting is performed after tensioning is finished for 48 h, one anchor backing plate hole in the top surface of a box girder is selected to serve as a grout inlet for grouting, adjacent vertical prestressing anchor backing plate holes are taken as grout outlets, and the two vertical prestressing tendons are grouted simultaneously according to the operation with a grouting process. According to the grouting construction method, a grouting channel is prevented from being damaged and blocked in a concrete construction process, the construction of the vertical prestressing tendon grouted tubes adopting U-shaped connection is simple and convenient to operate, the construction efficiency is increased, the quality control is guaranteed, and the construction cost is saved.
Description
Technical field
The present invention relates to a kind of bridge vertical prestressing bundle pipeline U-shaped and connect grout construction method, especially a kind of present situation bridge vertical prestressing mud jacking to be constructed the construction method be optimized.
Background technology
Along with science and technology constantly progress, vehicular traffic tonnage increases and the continuous increase of the magnitude of traffic flow, 80 and the bridge built the nineties face reconstruction or newly-built, waterway classification also faces lifting.Large Span Bridges is applied too heavily in engineering design, and prestress system almost runs through whole bridge superstructure; And Long span cast-in-situ box girder also all adopts thee-direction prestressed system, longitudinal and transverse inherent stress mud-jacking operation is routine work, and operation side is all at case back or case beam two ends, and constructing operation is convenient; And vertical prestressing bar stretch-draw mud jacking all need carry out operation in case beam, construction operation area is little, and madjack pipe is stretched out by web chamfering, reinforcing bar, template and concrete construction are all larger on the pipe impact in this section of pre-buried outlet beam, often find during mud jacking operation that this section of built-in pipe is blocked, affects normal mud jacking operation.And not blocked built-in pipe is not fine due to rigidity large temporary blocking device plugging effect, there is slurries overflow, affect vertical prestressing bar mud jacking plumpness, and in mud jacking process, occur that booster phenomenon is seriously polluted to case beam inner surface unavoidably.
Summary of the invention
The present invention will solve the technical problem that existing highway bridge vertical prestressing bundle mud jacking construction quality is unstable, efficiency of construction is low, operation side is little, spillage of material is larger, and provides a kind of bridge vertical prestressing bundle pipeline U-shaped to connect grout construction method.
For achieving the above object, the present invention is achieved by the following technical solutions:
Bridge vertical prestressing bundle pipeline U-shaped connects a construction method for grouting technique, the steps include:
1) select adjacent two vertical prestressing bars when vertical prestressing bundle is pre-buried, adopt a single u-shaped plastics belt tube to connect, U-shaped plastics belt tube two end inserts in the pipeline of adjacent two vertical prestressing bars respectively, and insertion depth >=20CM;
2) concreting completes, after intensity reaches designing requirement stretch-draw intensity, carry out vertical prestressing Shu Zhangla, mud jacking is carried out in 48 hours after stretch-draw completes, select an anchor plate hole as mud jacking slurry-feeding hole at case top surface of the beam, adjacent vertical prestressing anchor plate hole, as slurry outlet, is carried out operating according to mud-jacking technology and is completed two vertical prestressing bar mud jacking simultaneously.
The invention has the beneficial effects as follows:
Mud jacking Job Operations of the present invention all carries out operation at case top surface of the beam, construction operation area is large, conventional mud jacking operation can be prevented from bottom toward top mud jacking simultaneously, press slurry post jacking pipeline to have overflow slurry phenomenon because shutoff is not tight, thus polluted case beam inner chamber and cause vertical prestressing bundle mud jacking not full; Adopting U-shaped connection without the need to stretching out outside template bottom vertical prestressing bundle, can prevent from damaging mud jacking passage in concrete construction and blocking mud jacking passage.
Accompanying drawing explanation
The U-shaped connection of Fig. 1 bridge vertical prestressing bundle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, bridge vertical prestressing bundle pipeline U-shaped of the present invention connects grout construction method, and its construction sequence is:
(1) first and second adjacent vertical prestressing bar 1,2 is selected when vertical prestressing bundle is pre-buried, a single u-shaped plastics belt tube 3 is adopted to connect, U-shaped plastics belt tube 3 two end inserts in the pipeline of first and second vertical prestressing bar 1,2 adjacent respectively, and insertion depth is no less than 20CM.
(2) concreting completes, after intensity reaches designing requirement stretch-draw intensity, carry out vertical prestressing Shu Zhangla, mud jacking is carried out in 48 hours after stretch-draw completes, select an anchor plate hole 4 as mud jacking slurry-feeding hole at case top surface of the beam, adjacent vertical prestressing anchor plate hole, as slurry outlet 5, is carried out operating according to mud-jacking technology and is completed two vertical prestressing bar mud jacking simultaneously.Mud jacking is carried out in 48h after stretch-draw completes.
Claims (1)
1. bridge vertical prestressing bundle pipeline U-shaped connects a grout construction method, it is characterized in that, concrete steps:
1) select adjacent two vertical prestressing bars when vertical prestressing bundle is pre-buried, adopt a single u-shaped plastics belt tube (3) to connect, U-shaped plastics belt tube (3) two end inserts in the pipeline of adjacent two vertical prestressing bars respectively, and insertion depth >=20CM;
2) concreting completes, after intensity reaches designing requirement stretch-draw intensity, carry out vertical prestressing Shu Zhangla, mud jacking is carried out in 48h after stretch-draw completes, select an anchor plate hole (4) as mud jacking slurry-feeding hole at case top surface of the beam, adjacent vertical prestressing anchor plate hole, as slurry outlet (5), is carried out operating according to mud-jacking technology and is completed two vertical prestressing bar mud jacking simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013529.1A CN104695334A (en) | 2015-01-12 | 2015-01-12 | Grouting construction method used for vertical prestressing tendon tubes of bridge and adopting U-shaped connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013529.1A CN104695334A (en) | 2015-01-12 | 2015-01-12 | Grouting construction method used for vertical prestressing tendon tubes of bridge and adopting U-shaped connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104695334A true CN104695334A (en) | 2015-06-10 |
Family
ID=53342850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510013529.1A Pending CN104695334A (en) | 2015-01-12 | 2015-01-12 | Grouting construction method used for vertical prestressing tendon tubes of bridge and adopting U-shaped connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104695334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568855A (en) * | 2015-12-21 | 2016-05-11 | 中铁六局集团天津铁路建设有限公司 | Construction method for vertical prestressed tendons of continuous beam |
| CN109252449A (en) * | 2018-10-16 | 2019-01-22 | 中铁六局集团有限公司 | The two-tube neat note construction of cantilever beam vertical duct mud jacking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100699359B1 (en) * | 2006-08-17 | 2007-03-23 | (주)대경씨앤이 | Underground continuous wall with post tension device and construction method |
| KR20110106642A (en) * | 2010-03-23 | 2011-09-29 | 주식회사 삼우기초기술 | Lower body for removable U-turn anchor |
| CN102392415A (en) * | 2011-10-26 | 2012-03-28 | 柳州欧维姆机械股份有限公司 | Vertical prestressed anchorage system and construction method thereof |
| CN102747690A (en) * | 2012-07-20 | 2012-10-24 | 中交二公局第三工程有限公司 | Grouting construction method for vertical finish-rolling threaded steel U-shaped communicating tube |
-
2015
- 2015-01-12 CN CN201510013529.1A patent/CN104695334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100699359B1 (en) * | 2006-08-17 | 2007-03-23 | (주)대경씨앤이 | Underground continuous wall with post tension device and construction method |
| KR20110106642A (en) * | 2010-03-23 | 2011-09-29 | 주식회사 삼우기초기술 | Lower body for removable U-turn anchor |
| CN102392415A (en) * | 2011-10-26 | 2012-03-28 | 柳州欧维姆机械股份有限公司 | Vertical prestressed anchorage system and construction method thereof |
| CN102747690A (en) * | 2012-07-20 | 2012-10-24 | 中交二公局第三工程有限公司 | Grouting construction method for vertical finish-rolling threaded steel U-shaped communicating tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568855A (en) * | 2015-12-21 | 2016-05-11 | 中铁六局集团天津铁路建设有限公司 | Construction method for vertical prestressed tendons of continuous beam |
| CN109252449A (en) * | 2018-10-16 | 2019-01-22 | 中铁六局集团有限公司 | The two-tube neat note construction of cantilever beam vertical duct mud jacking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112727102B (en) | Concrete pouring flow guiding device and sewage treatment pool construction method | |
| CN108677729A (en) | A kind of interim prestressing apparatus for precast segment spliced girder | |
| CN104727233A (en) | Reinforcing structure of reinforced concrete arch bridge main arch ring | |
| CN204983662U (en) | To drawing screw rod and steel pipe framed bent combination unilateral formwork device | |
| CN110847041A (en) | Temporary anchoring structure and anchoring method for segmental prefabricated and assembled concrete box girder | |
| KR102300113B1 (en) | Pier Reinforcement Formwork System and Pier Reinforcement Method Using The Same | |
| CN104695334A (en) | Grouting construction method used for vertical prestressing tendon tubes of bridge and adopting U-shaped connection | |
| CN212103654U (en) | Bridge expansion joint drainage device | |
| CN103850162A (en) | Bridge type combined-structure road surface system and construction method thereof | |
| CN111962858A (en) | Positioning device and construction technology for wall reinforcement and formwork installation | |
| CN102303351A (en) | Method for manufacturing once pouring-molded T-shaped beam | |
| CN204589831U (en) | A kind of rc beam bridge girder reinforcing construction | |
| CN111206602A (en) | Partially collapsed high slope lattice beam formwork system and construction method | |
| CN110541396B (en) | Underwater construction method for low-roughness mould bag concrete | |
| CN212452148U (en) | An assembled permeable road panel structure | |
| CN209338990U (en) | A prestressed assembled anti-collision wall | |
| CN115538386A (en) | A construction method for the reconstruction of pressure forebay retreat sluice | |
| CN205012317U (en) | Disease treatment template for slip casting at bottom of railway concrete and tunnel | |
| CN208168349U (en) | A kind of profile steel concrete column template reinforcing device | |
| CN221276644U (en) | Slurry stone block fixing device for slope protection | |
| CN222206467U (en) | Prefabricated concrete retaining wall | |
| CN216617578U (en) | Underground drainage device for mine | |
| CN111456442A (en) | Pore grouting auxiliary device and grouting process | |
| CN102322139A (en) | End head formwork for T-shaped beam formed by casting moulding | |
| CN110295536A (en) | Using the prefabricated crossbeam structure and its construction method of complete prefabricated diaphragm plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |