CN107338729A - A kind of prestress pipe anti-blocking device and construction method - Google Patents
A kind of prestress pipe anti-blocking device and construction method Download PDFInfo
- Publication number
- CN107338729A CN107338729A CN201710558822.5A CN201710558822A CN107338729A CN 107338729 A CN107338729 A CN 107338729A CN 201710558822 A CN201710558822 A CN 201710558822A CN 107338729 A CN107338729 A CN 107338729A
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- CN
- China
- Prior art keywords
- air bag
- prestress pipe
- prestress
- draught line
- blocking device
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The present invention relates to a kind of prestress pipe anti-blocking device and construction method, the air compressor machine being connected including air bag, with air bag by pipeline and the draught line being connected with the air bag, during specific works, it is airbag aeration by air compressor machine, air bag can be made to be bonded with prestress pipe closely, for pressure-bearing, closure corrugated pipe pipeline, and air bag is moved to next to be poured section by draught line, complete rear gasbag until whole construction and taken out in sealing off and covering anchorage section.The anti-block apparatus and construction method can improve prestress pipe hole quality and efficiency of construction, have the characteristics of prestress pipe pore-forming effect is good, and air bag is convenient in demoulding fast, strong applicability, high financial profit, and reduce the danger of work high above the ground.
Description
Technical field
The present invention relates to bridge construction engineering field, is specifically related to a kind of prestress pipe anti-blocking device and construction party
Method.
Background technology
In continuous beam construction, prestress pipe uses bellows pore-forming, but during practice of construction, bellows meeting
Burn to form hole because of the welding slag of reinforcement welding, in bellows seaming position sometimes because seam does not sternly cause seaming position to enter
Slurry, causes prestress pipe to block.In post-tensioned construction, bellows is anti-blocking mainly to use internal lining pipe, bellows is played preferably
Inside supporting role, prevent bellows in concreting process because of Pipeline damage and pipe joint imprecision and caused by pipe
Road enters slurry and blocked.
Prevent prestress pipe from blocking using traditional internal lining pipe and following many defects be present：
（1）Internal lining pipe must carry out taking out pipe before concrete strength is not fully achieved, and otherwise internal lining pipe may be caused not take
Go out, need to hold the time in work progress, difficulty is big；
（2）There is gap in internal lining pipe, it is impossible to block prestress pipe completely, cause pipeline to enter slurry, the later stage also needs clearly with bellows
Hole；
（3）Liner thickness of pipe wall is big, from great, constructional difficulties, should not bend, slightly worse for curved section prestressing force practicality；
（4）Internal lining pipe need to repeat to take out pipe and intubation, and the consuming time is more, and economic benefit is low, and dangerous high during work high above the ground.
In existing public technology, such as publication number：CN101435269《Prestress pipe anti-blocking method》Describe and use water bag
Prevent prestress pipe from blocking, the technical method is：Pressurizeed using water pocket before concreting, full of prestress pipe, adopted
Pipeline is full of with water bag pressurization, but the water in water bag is not easy to discharge, and from great, demoulding difficulty, moves to next section difficulty,
And need the time to grow full of pipeline using water bag, applicable elements are harsher, operating difficulties, for high pier, water-deficient area it is pre-
Stress beam body applicability is poor.
The content of the invention
It is an object of the invention to design a kind of prestress pipe anti-blocking device and construction method, improve prestress pipe into
Hole quality and efficiency of construction, good with prestress pipe pore-forming effect, air bag is convenient in demoulding fast, strong applicability, economic benefit
The characteristics of high, and reduce the danger of work high above the ground.
To achieve the above object, the present invention provides following technical scheme：A kind of prestress pipe anti-blocking device, including gas
Capsule, the air compressor machine being connected with air bag by pipeline and the draught line being connected with the air bag, during specific works, pass through air compressor machine
For airbag aeration, air bag can be made to be bonded with prestress pipe closely, pressure-bearing, closure duct, be moved to down air bag by draught line
One to be poured section, air bag need to only take out in sealing off and covering anchorage section in whole bridge construction process.
Further, the prestress pipe uses bellows pore-forming.
Further, air bag external diameter in the case of unaerated is less than the internal diameter of the prestress pipe, by filling
Gas makes air bag be brought into close contact with prestress pipe.
Further, scale is indicated per 0.1m on the draught line.
Further, the air compressor machine is provided with air gauge, can show the air pressure now in air bag at any time.
It is a kind of using the prestress pipe anti-blocking device carry out prestress pipe anti-blocking construction method, specifically include as
Lower step：
（1）Draught line is run through into prestress pipe before concreting, and air bag is drawn to prestress pipe；
（2）Use air compressor machine to be pressurizeed for airbag aeration in air bag front end, air bag is brought into close contact, full of pipe with prestress pipe
Road；
（3）Pour girder segment concrete；
（4）After the completion of concreting, conserved, release airbag gas before treating next section of prestress pipe installation, air bag is received
The contracting demoulding；
（5）Next section beam section prestress pipe installation, reinforcing bar colligation, air bag is drawn to mixed using draught line before concreting
Solidifying soil beam section to be poured；
（6）Repeat step（1）~（4）, and air bag is taken out before prestressed stretch-draw, and steel strand, tensioning anchor seal.
Compared with the prior art, beneficial effects of the present invention are as follows：
1. air bag can be stripped after concrete initial set, lead to not take out without having to worry about because pipeline enters slurry in work progress；
2. air bag is bonded closely with prestress pipe, prestress pipe can be blocked completely, prestress pipe is without borehole cleaning again；
3. air bag deadweight is small, low pressure for curved section prestress pipe, can be passed through by Stress control rigidity in work progress
Curved to the corresponding radian of power, muscle to be positioned apply pressure and ensure to be bonded with prestress pipe closely again after reinforcing；
4. air bag takes out pipe and intubation without repeating, section to be poured is led to by draught line before next section concreting, had
It is efficient high, it is good in economic efficiency, the advantages of work high above the ground time and small risk.
Brief description of the drawings
Fig. 1 is air bag position schematic diagram before section concrete to be poured construction；
Fig. 2 is air bag position schematic diagram when section concrete to be poured is constructed；
Fig. 3 is that air bag is bonded close schematic diagram with prestress pipe；
Wherein：1st, air bag, 2, air compressor machine, 3, draught line, 4, prestress pipe.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to shown in Fig. 1-3, the present invention provides following technical scheme：A kind of prestress pipe anti-blocking device, it is main
Comprising 3 three air bag 1, air compressor machine 2, draught line parts, it is that air bag 1 is inflated by air compressor machine 2, air bag 1 and prestressed pipe can be made
Road 4 is bonded closely, for pressure-bearing, closure duct, air bag 1 is moved into next to be poured section by draught line 3, whole bridge construction mistake
Air bag 1 need to only take out in sealing off and covering anchorage section in journey.
In the present embodiment, the prestress pipe 4 is bellows.
In the present embodiment, the external diameter of air bag 1 is that 90mm is placed in the prestress pipe 4 that internal diameter is 102mm, by gas
Inflation is bonded close, pressure-bearing with prestress pipe 4 in capsule 1, and releasing the gas of air bag 1 makes air bag 1 be separated with prestress pipe 4.
In the present embodiment, air compressor machine 2 is that air bag 1 is inflated, and is provided with air gauge, can observe the air pressure of air bag 1 at any time,
And air pressure in air bag 1 can be controlled, air bag 1 is bonded with prestress pipe 4 closely, pressure-bearing.
In the present embodiment, draught line 3, it is made up of steel wire with plastic plated rope with a scale, and per 0.1m on steel wire with plastic plated rope
Scale is marked, after the completion of beam body concreting, the air bag 1 poured in section is moved to section to be poured by clearance draught line, is passed through
Graduation mark ensures lap of splice control within 0.3 ~ 0.5m.
Present invention also offers a kind of construction method of new prestress pipe anti-blocking, its operating method includes：
（1）Draught line is run through into prestress pipe before concreting, air bag is drawn to prestress pipe；
（2）Use air compressor machine to be forced into 0.03 ~ 0.05MPa for airbag aeration in air bag front end, air bag is cut with prestress pipe
Close closely, full of pipeline；
（3）Pour girder segment concrete；
（4）After the completion of concreting, conserved, release airbag gas before treating next section of prestress pipe installation, air bag is received
The contracting demoulding；
（5）Next section beam section prestress pipe installation, reinforcing bar colligation, is drawn air bag to coagulation using lead before concreting
Soil beam section to be poured；
（6）Repeat step（1）~（4）, until prestressed stretch-draw, the sealing off and covering anchorage of pipeline location.Air bag is taken out before prestressed stretch-draw, is worn
Steel strand wires, tensioning anchor seal.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
- A kind of 1. prestress pipe anti-blocking device, it is characterised in that：The air compressor machine being connected including air bag, with air bag by pipeline with And the draught line being connected with the air bag, during specific works, it is airbag aeration by air compressor machine, air bag and prestress pipe can be made Fitting is close, for pressure-bearing, closure prestress pipe, and air bag is moved into next to be poured section by draught line, applied until entirely Work is completed rear gasbag and taken out in sealing off and covering anchorage section.
- A kind of 2. prestress pipe anti-blocking device according to claim 1, it is characterised in that：The external diameter of the air bag is less than The internal diameter of the prestress pipe, air bag is set to be brought into close contact with prestress pipe by inflation.
- A kind of 3. prestress pipe anti-blocking device according to claim 1, it is characterised in that：Per 0.1m on the draught line Indicate scale.
- A kind of 4. prestress pipe anti-blocking device according to claim 1, it is characterised in that：The air compressor machine is provided with gas Table is pressed, for showing the air pressure now in air bag at any time.
- 5. one kind application prestress pipe anti-blocking device as described in claim 1-4 carries out prestress pipe anti-blocking construction method, Specifically comprise the following steps：（1）Draught line is run through into prestress pipe before concreting, and drawn air bag to prestress pipe by draught line It is interior；（2）Use air compressor machine to be pressurizeed for airbag aeration in air bag front end, air bag is brought into close contact, full of pipe with prestress pipe Road；（3）Pour girder segment concrete；（4）After the completion of concreting, conserved, release airbag gas before treating next section of prestress pipe installation, air bag is received The contracting demoulding；（5）Next section beam section prestress pipe installation, reinforcing bar colligation, air bag is drawn to mixed using draught line before concreting Solidifying soil beam section to be poured；（6）Repeat step（1）~（4）, and air bag is taken out before prestressed stretch-draw, and steel strand, tensioning anchor seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558822.5A CN107338729A (en) | 2017-07-11 | 2017-07-11 | A kind of prestress pipe anti-blocking device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558822.5A CN107338729A (en) | 2017-07-11 | 2017-07-11 | A kind of prestress pipe anti-blocking device and construction method |
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| CN107338729A true CN107338729A (en) | 2017-11-10 |
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| CN201710558822.5A Pending CN107338729A (en) | 2017-07-11 | 2017-07-11 | A kind of prestress pipe anti-blocking device and construction method |
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| CN (1) | CN107338729A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049573A (en) * | 2017-12-11 | 2018-05-18 | 中交公局海威工程建设有限公司 | Prestress pipe deforms prospecting apparatus and its application method |
| CN109736209A (en) * | 2019-03-06 | 2019-05-10 | 甘肃路桥建设集团有限公司 | A kind of bridge pier column construction method applying vertical prestressing |
| CN110512511A (en) * | 2019-09-24 | 2019-11-29 | 中铁十六局集团有限公司 | Beam sections and its beam sections connection structure and casting method |
| CN111926708A (en) * | 2020-07-15 | 2020-11-13 | 中国建筑第七工程局有限公司 | Segment beam wet joint prestress pore-forming device |
| CN114393697A (en) * | 2022-01-27 | 2022-04-26 | 湖南建工交通建设有限公司 | Construction method of inflatable lining pipe of post-tensioned prestressed pipeline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435269A (en) * | 2008-12-22 | 2009-05-20 | 中铁二局股份有限公司 | Prestress pipe anti-blocking method |
| CN105625191A (en) * | 2016-02-02 | 2016-06-01 | 中交一公局第二工程有限公司 | Construction method of segment girder prestressed pipeline |
| CN208136721U (en) * | 2017-07-11 | 2018-11-23 | 中铁四局集团第二工程有限公司 | A kind of prestress pipe anti-blocking device |
-
2017
- 2017-07-11 CN CN201710558822.5A patent/CN107338729A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435269A (en) * | 2008-12-22 | 2009-05-20 | 中铁二局股份有限公司 | Prestress pipe anti-blocking method |
| CN105625191A (en) * | 2016-02-02 | 2016-06-01 | 中交一公局第二工程有限公司 | Construction method of segment girder prestressed pipeline |
| CN208136721U (en) * | 2017-07-11 | 2018-11-23 | 中铁四局集团第二工程有限公司 | A kind of prestress pipe anti-blocking device |
Non-Patent Citations (1)
| Title |
|---|
| 易季爰等: "荆岳长江公路大桥29＃墩索塔上横梁施工新工艺", 《中外公路》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049573A (en) * | 2017-12-11 | 2018-05-18 | 中交公局海威工程建设有限公司 | Prestress pipe deforms prospecting apparatus and its application method |
| CN109736209A (en) * | 2019-03-06 | 2019-05-10 | 甘肃路桥建设集团有限公司 | A kind of bridge pier column construction method applying vertical prestressing |
| CN110512511A (en) * | 2019-09-24 | 2019-11-29 | 中铁十六局集团有限公司 | Beam sections and its beam sections connection structure and casting method |
| CN111926708A (en) * | 2020-07-15 | 2020-11-13 | 中国建筑第七工程局有限公司 | Segment beam wet joint prestress pore-forming device |
| CN114393697A (en) * | 2022-01-27 | 2022-04-26 | 湖南建工交通建设有限公司 | Construction method of inflatable lining pipe of post-tensioned prestressed pipeline |
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