CN105625179A - Method for heating prestressed pipes through electric heating wires - Google Patents
Method for heating prestressed pipes through electric heating wires Download PDFInfo
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- CN105625179A CN105625179A CN201410590560.7A CN201410590560A CN105625179A CN 105625179 A CN105625179 A CN 105625179A CN 201410590560 A CN201410590560 A CN 201410590560A CN 105625179 A CN105625179 A CN 105625179A
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Abstract
The invention provides a method for heating prestressed pipes through electric heating wires. Before beam body concrete is poured, the electric heating wires are wound around corrugated pipes, the electric heating wires need to be tightly attached to the corrugated pipes and connected firmly; in a next stage of construction, it should be noticed that the electric heating wires are connected when the corrugated pipes are connected, and whether a fault is generated in the electric heating wires or not is detected; and when the electric heating wires are arranged, preferably, double-wire arrangement is adopted, and therefore it can be guaranteed that insulation pipes are still heated even though one electric heating wire fails. The method has the beneficial effects that the problem that the temperature of prestressed grouting is difficult to maintain is effectively solved and the grouting quality is guaranteed. The electric heating wires are adopted for heating the prestressed pipes, so that the maintenance temperature of prestressed grouting is effectively guaranteed, the problem existing in maintenance of the measure is solved, and the durability of prestressed steel strands is guaranteed.
Description
Technical field
The present invention relates to a kind of method heating prestress pipe, specifically the method for electric-heating-wire-heating prestress pipe.
Background technology
Being affected by construction period and earth clearance progress, part Construction of continuous beam and closure segment construction concentrate on winter construction, therefore effectively ensure the quality of cement mortar, it is ensured that the durability of steel strand wires is the difficult problem that winter construction needs to solve.
Summary of the invention
For solving the problems referred to above, a kind of method that it is an object of the invention to provide electric-heating-wire-heating prestress pipe.
The present invention for achieving the above object, is achieved through the following technical solutions: the method for electric-heating-wire-heating prestress pipe, before beam body concreting, corrugated tube is wound around heating wire, and heating wire needs closely connected with corrugated tube, and heating wire to be connected firmly; When next stage constructs, connect corrugated tube it is noted that be simultaneously connected with heating wire, and detect and whether go wrong in the middle of heating wire, when arranging heating wire, it is desirable to take two-wire to arrange, accordingly even when one goes wrong, still ensure that insulating tube heats.
For realizing the purpose of the present invention further, it is also possible to by the following technical solutions: after completing concreting, carry out the protection of termination heating wire; Before mud jacking, connecting power supply half an hour in advance, prevent electric leakage and stop heating during mud jacking, mud jacking carries out power supply connection immediately after completing, the power supply Connection Time is 7 hours, stops heating after reaching cement mortar final set.
It is an advantage of the current invention that: the present invention effectively solves an insulation difficult problem for inherent stress mud-jacking, it is ensured that squeezing quality. Adopt electric-heating-wire-heating prestress pipe, be effectively guaranteed the curing temperature of inherent stress mud-jacking, solve a maintenance difficult problem for this measure, it is ensured that the durability of prestress wire.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
The method of electric-heating-wire-heating prestress pipe, before beam body concreting, is wound around heating wire to corrugated tube, and heating wire needs closely connected with corrugated tube, and heating wire to be connected firmly; When next stage constructs, connect corrugated tube it is noted that be simultaneously connected with heating wire, and detect and whether go wrong in the middle of heating wire, when arranging heating wire, it is desirable to take two-wire to arrange, accordingly even when one goes wrong, still ensure that insulating tube heats.
After completing concreting, carry out the protection of termination heating wire; Before mud jacking, connecting power supply half an hour in advance, prevent electric leakage and stop heating during mud jacking, mud jacking carries out power supply connection immediately after completing, the power supply Connection Time is 7 hours, stops heating after reaching cement mortar final set.
Being affected by construction period and earth clearance progress, part Construction of continuous beam and closure segment construction concentrate on winter construction, therefore effectively ensure the quality of cement mortar, it is ensured that the durability of steel strand wires is the difficult problem that winter construction solves.
Usual way: water heating improves the temperature of corrugated tube self in advance, and recycling daytime temperature is constructed time higher.
Conservative way: whole beam body wrapped up, inside arrange steam oven and be heated, makes beam body bulk temperature raise so that it is guaranteed that squeezing quality.
Mentality of designing: at corrugated tube arranged outside heating wire, heating wire is wound according to 20cm, single power of heating wire 2kw, carrying out electrified regulation after mud jacking in time, keeping corrugated tube own temperature, thus reaching the heat insulation effect of cement mortar, it is ensured that squeezing quality.
Concrete measure:
1. before beam body concreting, corrugated tube being wound around heating wire, heating wire needs closely connected with corrugated tube, and heating wire to be connected firmly.
2., when next stage constructs, connect corrugated tube it is noted that be simultaneously connected with heating wire, and detect and whether go wrong in the middle of heating wire, when arranging heating wire, it is desirable to take two-wire to arrange, accordingly even when one goes wrong, still ensure that insulating tube heats.
3. heating wire must adopt outside with the heating wire of insulant, separated in being so not easy.
4., after completing concreting, the protection of termination heating wire is carried out. Before mud jacking, connecting power supply half an hour in advance, prevent electric leakage and stop heating during mud jacking, mud jacking carries out power supply connection immediately after completing, the power supply Connection Time is 7 hours, stops heating after reaching cement mortar final set.
Tried checking, uses the direct-fired method of heating wire to be effectively guaranteed squeezing quality, it is ensured that the durability of steel strand wires, Site Detection, 22 �� of C of the curing temperature of cement mortar.
Arranging according to the whole winter construction of continuous beam, vertical prestressing avoids winter construction as far as possible, does not carry out heating wire setting, and prestress pipe quantity is �� 70:975m; �� 90:3340m; �� 100:910m; Transverse prestress pipeline G=70mm, 4032m.
The heat preserving mode of this prestressing force pressure drop, directly produces economic benefit 15.7 ten thousand yuan, and effectively solves an insulation difficult problem for inherent stress mud-jacking, it is ensured that squeezing quality.
Adopting electric-heating-wire-heating prestress pipe, be effectively guaranteed the curing temperature of inherent stress mud-jacking, solve a maintenance difficult problem for this measure, it is ensured that the durability of prestress wire, test effect is good, has certain dissemination.
Technical scheme is not restricted in the scope of embodiment of the present invention. The technology contents of the not detailed description of the present invention is known technology.
Claims (2)
1. the method for electric-heating-wire-heating prestress pipe, it is characterised in that: before beam body concreting, corrugated tube being wound around heating wire, heating wire needs closely connected with corrugated tube, and heating wire to be connected firmly; When next stage constructs, connect corrugated tube it is noted that be simultaneously connected with heating wire, and detect and whether go wrong in the middle of heating wire, when arranging heating wire, it is desirable to take two-wire to arrange, accordingly even when one goes wrong, still ensure that insulating tube heats.
2. the method for electric-heating-wire-heating prestress pipe according to claim 1, it is characterised in that: after completing concreting, carry out the protection of termination heating wire; Before mud jacking, connecting power supply half an hour in advance, prevent electric leakage and stop heating during mud jacking, mud jacking carries out power supply connection immediately after completing, the power supply Connection Time is 7 hours, stops heating after reaching cement mortar final set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590560.7A CN105625179A (en) | 2014-10-29 | 2014-10-29 | Method for heating prestressed pipes through electric heating wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590560.7A CN105625179A (en) | 2014-10-29 | 2014-10-29 | Method for heating prestressed pipes through electric heating wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105625179A true CN105625179A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410590560.7A Pending CN105625179A (en) | 2014-10-29 | 2014-10-29 | Method for heating prestressed pipes through electric heating wires |
Country Status (1)
| Country | Link |
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| CN (1) | CN105625179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359728A (en) * | 2020-12-04 | 2021-02-12 | 中国十七冶集团有限公司 | Prestressed pipeline grouting heating method |
| CN114717972A (en) * | 2022-06-08 | 2022-07-08 | 山东交通学院 | Concrete box girder bridge temperature control equipment containing heating corrugated pipe and construction method |
| CN114719097A (en) * | 2022-06-08 | 2022-07-08 | 山东交通学院 | Corrugated pipe suitable for winter prestressed pipeline grouting and use method |
-
2014
- 2014-10-29 CN CN201410590560.7A patent/CN105625179A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359728A (en) * | 2020-12-04 | 2021-02-12 | 中国十七冶集团有限公司 | Prestressed pipeline grouting heating method |
| CN114717972A (en) * | 2022-06-08 | 2022-07-08 | 山东交通学院 | Concrete box girder bridge temperature control equipment containing heating corrugated pipe and construction method |
| CN114719097A (en) * | 2022-06-08 | 2022-07-08 | 山东交通学院 | Corrugated pipe suitable for winter prestressed pipeline grouting and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |