CN101551049B - A method for reinforcing overhead concrete pipeline - Google Patents
A method for reinforcing overhead concrete pipeline Download PDFInfo
- Publication number
- CN101551049B CN101551049B CN2009101025522A CN200910102552A CN101551049B CN 101551049 B CN101551049 B CN 101551049B CN 2009101025522 A CN2009101025522 A CN 2009101025522A CN 200910102552 A CN200910102552 A CN 200910102552A CN 101551049 B CN101551049 B CN 101551049B
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- pipeline
- steel strand
- reinforcing
- concrete
- crack
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Abstract
The invention discloses a method for reinforcing overhead concrete pipeline, belonging to the building reinforcement method, which is object to provided a method for repairing and reinforcing concretepipeline. Its technical scheme includes: cleaning pipeline surface, sanding pipeline surface, imbedding encapsulating compound mouth, sealing cracks, injecting encapsulating glue, arranging and tense steel strand, setting several pads and using hoop for banding the steel strands, coating surfactant on the pipeline surface, and applying cement mortar on the pipeline surface. The invention not only has a short duration, low cost, no need of large-scale hoisting machinery, and the like advantages, but also can enhance the structural strength, enhance anti-infiltration, anti-freezing and anti-cra cking and other indicators of the pipeline; and can be widely used for repairing and reinforcing a variety of overhead concrete water transfer and pollution discharge pipelines.
Description
Technical field:
The present invention relates to a kind of strengthening method of building, relate in particular to a kind of restoring and fastening method of concrete duct.
Background technique:
Concrete duct is a kind of pipeline that extensively adopts in water delivery and the drainage project, and two kinds are generally buried and maked somebody a mere figurehead to its installation form underground; Overhead concrete pipeline causes aging, cracking, reinforcing bar damage such as to expose because of it exposes for a long time easily.At present, the mode of normally taking thoroughly to change is recovered damaged overhead concrete pipeline, therefore has long in time limit, defectives such as cost is high, lifting trouble, and construction period can influence the normal use of pipeline.
Summary of the invention:
At the above-mentioned defective that exists in the prior art, the present invention aim to provide a kind of construction period pipeline still can normally use and the low method for reinforcing overhead concrete pipeline of cost.
To achieve these goals, the present invention is by the following technical solutions: it comprises surface clean, surface finish, mends a split, and concrete steps are as follows:
1) according to a conventional method pipe surface is cleaned;
2) according to a conventional method pipe surface is polished;
3) bury the encapsulating mouth underground at the place, crack, seal the crack, in the crack, fill with base joint grouting glue, seal the encapsulating mouth then by described encapsulating mouth with epoxy resin daub;
4) arrange some steel strand on the surface of pipeline along generatrix direction, the two ends of each described steel strand are separately fixed on the pipe support, strain steel strand then and reach the stress design requirement, guarantee that the spacing of each steel strand reaches designing requirement;
5) some cushion blocks are set between each steel strand and pipeline, each steel strand banding are fixed, guarantee that the steel strand and the spacing of pipeline and the spacing of each stirrup reach designing requirement with some stirrups;
6) pipe surface brushing interfacial agents;
7) pipe surface is smeared and is stuck with paste slush and reach designing requirement.
In technique scheme, described slush can be common slush, but in order to improve the formulated polymer cement mortar of raw material that strengthening quality preferably adopts water and following weight portion: label is that 325 cement 50, sandstone 100, interfacial agents 25, the granularity that granularity is 2～4mm are silica 18, basalt fibre 0.2, entringite type dilatant 0.04, concrete early strength agent 0.04, the concrete early strength water-reducing agent 0.04 of 2～4mm; Wherein, the ratio of water and above-mentioned each raw material disposes according to a conventional method.
Compared with the prior art, the present invention is owing to adopted technique scheme, so biggest advantage is the normal function of use that does not influence pipeline in construction period; Not only have the duration short, cost is low, need not advantage such as large-scale hoisting machinery, but also can improve the intensity of structure, the impermeabilisation, the anti-freezing that strengthen pipeline frozen and index such as cracking resistance.
Embodiment:
Being that 0.8m, length are 120m with the repairing and reinforcement diameter below, be example across the municipal drain pipe of river surface, and the invention will be further described in conjunction with specific embodiments:
Embodiment 1
1) according to a conventional method pipe surface is cleaned the greasy dirt of removal pipe surface, foreign material etc.;
2) according to a conventional method pipe surface is polished to increase the roughness of pipe surface, remove simultaneously that pipe surface exists peel off, deterioration parts such as honeycomb, corrosion, remove the loose material of fracture faces and the foreign matter in the crack;
3) bury disposable encapsulating mouth underground at crack place, the crack is sealed, in the crack, fill with base joint grouting glue by described encapsulating mouth then, sealing encapsulating mouth with epoxy resin daub by the PVC material; The encapsulating mouth is arranged on or termination or the broad place in crack or the infall in crack in crack as far as possible; If the crack is longer, then every interval 0.8～1m is provided with an encapsulating mouth;
4) arrange some steel strand on the surface of pipeline along generatrix direction, the two ends of each described steel strand are fixed on the pipe support by chemical anchor bolts respectively, strain steel strand then and reach the stress design requirement, and guarantee that the spacing of each steel strand is 6cm; It is that 3.5～4mm, the form of the composition are that 6 * 7+IWS metal thigh core regular-lay right lay, tensile strength are the steel strand of 1770N/mm that steel strand adopt diameter;
5) some cushion blocks are set between each steel strand and pipeline, with some stirrups each steel strand banding are fixed, and guarantee that the spacing of steel strand and pipeline reaches 1.5cm, the spacing that guarantees each stirrup is 25cm;
6) in the external coating interfacial agents of pipeline, to improve the cohesive force of slush and pipeline;
7) smear three layers of slush of paste on the surface of pipeline, controlling every layer thickness is about 1cm.
Embodiment 2
Each step is with embodiment 1; Wherein, described slush is substituted with polymer cement mortar can further improve strengthening quality; Described polymer cement mortar is formulated by the raw material of water and following weight portion: label is 325 50 parts of cement, 25 parts of 100 parts of sandstones, the interfacial agents that granularity is 2～4mm, 0.2 part of 8 parts of silica 1s, basalt fibre, 0.04 part of entringite type dilatant, 0.04 part of concrete early strength agent, 0.04 part of the concrete early strength water-reducing agent that granularity is 2～4mm; It is that 3800～4800MPa, diameter are that 0.02mm, length are that the weak point of 5～6cm is cut basalt fibre that described basalt fibre adopts tensile strength.
Claims (2)
1. a method for reinforcing overhead concrete pipeline comprises surface clean, surface finish, mends a split, and it is characterized in that concrete steps are as follows:
1) according to a conventional method pipe surface is cleaned;
2) according to a conventional method pipe surface is polished;
3) bury the encapsulating mouth underground at the place, crack, seal the crack, in the crack, fill with base joint grouting glue, seal the encapsulating mouth then by described encapsulating mouth with epoxy resin daub;
4) arrange some steel strand on the surface of pipeline along generatrix direction, the two ends of each described steel strand are separately fixed on the pipe support, strain steel strand then and reach the stress design requirement, guarantee that the spacing of each steel strand reaches designing requirement;
5) some cushion blocks are set between each steel strand and pipeline, each steel strand banding are fixed, guarantee that the steel strand and the spacing of pipeline and the spacing of each stirrup reach designing requirement with some stirrups;
6) pipe surface brushing interfacial agents;
7) pipe surface is smeared and is stuck with paste slush and reach designing requirement.
2. method for reinforcing overhead concrete pipeline according to claim 1 is characterized in that described slush is by the formulated polymer cement mortar of the raw material of water and following weight portion: label is that 325 cement 50, sandstone 100, interfacial agents 25, the granularity that granularity is 2～4mm are silica 18, basalt fibre 0.2, entringite type dilatant 0.04, concrete early strength agent 0.04, the concrete early strength water-reducing agent 0.04 of 2～4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101025522A CN101551049B (en) | 2009-05-08 | 2009-05-08 | A method for reinforcing overhead concrete pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101025522A CN101551049B (en) | 2009-05-08 | 2009-05-08 | A method for reinforcing overhead concrete pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101551049A CN101551049A (en) | 2009-10-07 |
| CN101551049B true CN101551049B (en) | 2010-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101025522A Expired - Fee Related CN101551049B (en) | 2009-05-08 | 2009-05-08 | A method for reinforcing overhead concrete pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN101551049B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197129B (en) * | 2014-07-25 | 2017-08-22 | 深圳市清源管道科技发展有限公司 | A kind of novel reinforced concrete drainage pipe and its manufacture method |
| CN105090677B (en) * | 2015-09-30 | 2017-04-19 | 山东钢铁股份有限公司 | Leakage stoppage method for root leakage of storage tank |
| CN109723933A (en) * | 2019-02-16 | 2019-05-07 | 中铝矿业有限公司 | A kind of Rapid leakage repairing method of pipeline leakage point |
| CN110117984A (en) * | 2019-05-09 | 2019-08-13 | 王福州 | Concrete duct settles method for repairing seepage |
-
2009
- 2009-05-08 CN CN2009101025522A patent/CN101551049B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101551049A (en) | 2009-10-07 |
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Granted publication date: 20101110 Termination date: 20120508 |