CN102490262A - Steam curing construction method for ballastless track plate - Google Patents
Steam curing construction method for ballastless track plate Download PDFInfo
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- CN102490262A CN102490262A CN2011103895274A CN201110389527A CN102490262A CN 102490262 A CN102490262 A CN 102490262A CN 2011103895274 A CN2011103895274 A CN 2011103895274A CN 201110389527 A CN201110389527 A CN 201110389527A CN 102490262 A CN102490262 A CN 102490262A
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Abstract
The invention discloses a steam curing construction method for a ballastless track plate. After concrete for a track plate (1) is poured, the processes of standing for moisturizing, heating in a sail for steam curing, curing by steam in the sail at constant temperature, cooling in the sail, and demoulding a template (2) are carried out. The steam curing construction method for the ballastless track plate comprises the following specific processes: installing the template (2) on a pedestal base (3); after the track plate (1) is poured, inserting a temperature sensor (4) into the core part of the track plate (1); hanging a temperature sensor (6) on a sail rack; after the concrete stands for 4h, covering a plastic film (5) and sail cloth (7); opening a steam valve (8); introducing steam into a steam pipe (10); automatically controlling heating, keeping constant temperature and cooling by an electromagnetic valve (9) according to the parameters preset in the whole steam curing stage; after the concrete test block of the track plate (1) reaches 40MPa, demoulding; and before the template (2) is demoulded, ensuring that temperature difference between the core part temperature and the surface part of the concrete as well as the temperature difference between the surface temperature and the ambient temperature do not exceed 15DEG C.
Description
Technical field
The present invention relates to a kind of fragment-free track slab steam curing construction method.
Background technology
The ballastless track of high-speed railway with independent intellectual property right that CRTS III type fragment-free track slab is is independently researched and developed as China, utilization also is not very extensive at home at present.Along with becoming to irritate the open-minded of high ferro; The security of its operation, smoothness, comfortableness have obtained expert and insider's favorable comment, but the prefabricated construction scheme of CRTS III type fragment-free track slab and key Quality Control also do not form a whole set of complete data that can reference at home.
Summary of the invention
The technical problem that the present invention will solve is; A kind of fragment-free track slab steam curing construction method is provided; This method can improve concrete intensity at short notice and not crack simultaneously; Do not influence the quality of concrete self, to fill up prior art in the blank aspect the fragment-free track slab steam curing construction.
Technical scheme of the present invention: the track board concrete build leave standstill successively after the completion preserve moisture, the cooling and the template demoulding in the constant temperature steam curing in the intensification steam curing in the paulin, paulin, paulin; Detailed process is: the track plate is built when accomplishing temperature sensor is inserted in the track plate core; Temperature sensor is suspended on the paulin frame; Concrete leaves standstill plastic sheeting and tarpaulin on the 4h bonnet; Open steam valve, steam pipe feeds steam, and the parameter that magnetic valve pre-set according to the whole steam curing stage heats up, constant temperature, cooling are controlled automatically.
Adopt automatic temperature-adjusting control system control core temperature and intensification, rate of temperature fall in the whole steam curing stage, track plate core temperature is no more than 55
OC, intensification, rate of temperature fall are controlled at 15
oIn the C/h.
Time in constant temperature stage is 5h～6h, and the constant temperature phase temperature is set to 40 ℃～45 ℃ usually.
Tarpaulin is evenly opened in the temperature-fall period.
Track board concrete intensity of test block reaches behind the 40MPa can the demoulding, should guarantee before the template demoulding that the temperature difference of concrete core temperature and surface temperature, surface temperature and environment temperature all is no more than 15
OC
This process using auto temperature controlled system, always be divided into quietly stop, intensification, constant temperature, cooling four-stage.
, the track plate behind the quiet 4h of stopping, normally begins after the concrete final set track plate is carried out steam curing after building completion.
In maintenance intensification and the temperature-fall period in order to prevent that concrete receives excessive temperature stress variable effect; The heating-cooling excessive velocities all might cause concrete cracking; Must control programming rate and cooling rate, programming rate and cooling rate all can not surpass 15 ℃/h.Too fast in order to control concrete cooling, but when concrete initial set covered with plastic film and tarpaulin, tarpaulin will be opened evenly cooling time simultaneously, avoids concrete local heating perhaps to catch a cold.Track board concrete intensity of test block reaches behind the 40MPa can the demoulding, should guarantee before the demoulding that the temperature difference of concrete core temperature and surface temperature, surface temperature and environment temperature all is no more than 15
OC
Description of drawings
Fig. 1 is maintenance facility sketch map of the present invention, front view;
Fig. 2 is maintenance facility sketch map of the present invention, plane.
The specific embodiment
Embodiments of the invention: track plate steam curing system, be divided into quietly stop, intensification, constant temperature, cooling four-stage.Mounting template 2 on pedestal basis 3; When 1 concreting of track plate is accomplished temperature sensor 4 is inserted in track plate 1 core, temperature sensor 6 is suspended on the paulin frame, concrete leaves standstill plastic sheeting 5 and tarpaulin 7 on the 4h bonnet; Open steam valve 8; Steam pipe 10 feeds steam, and magnetic valve 9 will heat up according to the parameter that the whole steam curing stage pre-sets, constant temperature, cooling are controlled automatically, so that concrete early strength gets a desired effect.Programming rate and cooling rate all can not surpass 15 ℃/h, are advisable with 12 ℃/h; Plastic sheeting 5 should evenly be opened with tarpaulin 7 in the time of cooling, avoids concrete local heating perhaps to catch a cold.Track plate 1 concrete test block intensity reaches behind the 40MPa can the demoulding, should guarantee before template 2 demouldings that the temperature difference of concrete core temperature and surface temperature, surface temperature and environment temperature all is no more than 15 ℃.
The time in constant temperature stage and temperature will be provided with according to concrete performance.Simultaneously be unlikely to make concrete cracking again in order to reach higher early strength, the time in constant temperature stage is set to 5.5h (can not surpass 6h) usually, and the constant temperature phase temperature is set to 42 ℃ (can not above 45 ℃) usually.
Will control four key temperatures when concrete steam maintenance processes and form removal well: temperature can not be above 45 ℃ in the paulin; Core temperature can not be above 55 ℃; The concrete core temperature and the surface temperature temperature difference can not be above 15 ℃; The concrete surface temperature and the environment temperature temperature difference can not be above 15 ℃ during the demoulding.
Claims (5)
1. fragment-free track slab steam curing construction method is characterized in that: leave standstill successively after track plate (1) concreting is accomplished preserve moisture, the cooling and template (2) demoulding in the constant temperature steam curing in the intensification steam curing in the paulin, paulin, paulin; Detailed process is: go up mounting template (2) on pedestal basis (3); Track plate (1) is built when accomplishing temperature sensor (4) is inserted in track plate (1) core; Temperature sensor (6) is suspended on the paulin frame, and concrete leaves standstill plastic sheeting on the 4h bonnet (5) and tarpaulin (7), opens steam valve (8); Steam pipe (10) feeds steam, and the parameter that magnetic valve (9) pre-set according to the whole steam curing stage heats up, constant temperature, cooling are controlled automatically.
2. according to right 1 described fragment-free track slab steam curing construction method, it is characterized in that: adopt automatic temperature-adjusting control system control core temperature and intensification, rate of temperature fall in the whole steam curing stage, track plate (1) core temperature is no more than 55
OC, intensification, rate of temperature fall are controlled at 15
oIn the C/h.
3. according to right 1 described fragment-free track slab steam curing construction method, it is characterized in that: the time in constant temperature stage is 5h～6h, and the constant temperature phase temperature is set to 40 ℃～45 ℃ usually.
4. according to right 1 described fragment-free track slab steam curing construction method, it is characterized in that: tarpaulin in the temperature-fall period (7) is evenly opened.
5. according to right 1 described fragment-free track slab steam curing construction method; It is characterized in that: track plate (1) concrete test block intensity reaches behind the 40MPa can the demoulding, should guarantee before template (2) demoulding that the temperature difference of concrete core temperature and surface temperature, surface temperature and environment temperature all is no more than 15
OC
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103895274A CN102490262A (en) | 2011-11-30 | 2011-11-30 | Steam curing construction method for ballastless track plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103895274A CN102490262A (en) | 2011-11-30 | 2011-11-30 | Steam curing construction method for ballastless track plate |
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| CN102490262A true CN102490262A (en) | 2012-06-13 |
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| CN2011103895274A Pending CN102490262A (en) | 2011-11-30 | 2011-11-30 | Steam curing construction method for ballastless track plate |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109989A (en) * | 2013-04-18 | 2014-10-22 | 中铁十一局集团第一工程有限公司 | Method for curing double-block ballastless tracks in extreme environments |
| CN104493965A (en) * | 2015-01-26 | 2015-04-08 | 三一汽车制造有限公司 | Precast concrete curing and distribution device, production system and production method |
| CN105330210A (en) * | 2015-11-20 | 2016-02-17 | 中信大锰矿业有限责任公司大新锰矿分公司 | Steam curing method of baking-free manganese slag bricks |
| CN107283600A (en) * | 2017-06-19 | 2017-10-24 | 中交二航局第四工程有限公司安徽分公司 | A kind of prefabricated component preparation facilities |
| CN107283609A (en) * | 2017-06-22 | 2017-10-24 | 中交二航局第四工程有限公司安徽分公司 | Steam canopy is used in concrete prefabricated bridge plate hardening |
| CN107443568A (en) * | 2017-06-22 | 2017-12-08 | 中交二航局第四工程有限公司安徽分公司 | If cable wire rolls up the concrete prefabricated bridge plate producing device of support frame |
| CN107443569A (en) * | 2017-06-22 | 2017-12-08 | 中交二航局第四工程有限公司安徽分公司 | Concrete prefabricated bridge plate production equipment |
| CN108000694A (en) * | 2018-01-05 | 2018-05-08 | 河北益铁机电科技有限公司 | Pretensioning prestressed concrete track board assembly line curing system and its application |
| CN109366708A (en) * | 2018-11-30 | 2019-02-22 | 四川升腾元创机电技术研究有限公司 | The curing means and flowing water unit of unit flowing water method production track plates |
| CN109571735A (en) * | 2019-02-22 | 2019-04-05 | 云南建投第十建设有限公司 | Green bio low-voltage high-temperature steam press maintenance system |
| CN109702878A (en) * | 2019-03-04 | 2019-05-03 | 河间市宝泽龙金属材料有限公司 | Fragment-free track slab curing system |
| CN110434991A (en) * | 2019-08-10 | 2019-11-12 | 江龙 | A kind of precast concrete steam curing process |
| CN110483098A (en) * | 2019-09-27 | 2019-11-22 | 中铁十六局集团北京轨道交通工程建设有限公司 | A kind of method of type concrete steam maintenance in subway work |
| CN110962224A (en) * | 2019-12-31 | 2020-04-07 | 天津中匠建筑科技有限公司 | Test method and device for acquiring steam curing parameters of prefabricated part at low temperature and steam curing method |
| CN112248204A (en) * | 2020-09-28 | 2021-01-22 | 北京星航机电装备有限公司 | One-to-multiple fixed die table concrete precast slab maintenance system and maintenance method |
| CN114482012A (en) * | 2022-01-28 | 2022-05-13 | 中国建筑第八工程局有限公司 | Temperature-controlled maintenance system and method for buttress wall |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109989A (en) * | 2013-04-18 | 2014-10-22 | 中铁十一局集团第一工程有限公司 | Method for curing double-block ballastless tracks in extreme environments |
| CN104493965A (en) * | 2015-01-26 | 2015-04-08 | 三一汽车制造有限公司 | Precast concrete curing and distribution device, production system and production method |
| CN105330210A (en) * | 2015-11-20 | 2016-02-17 | 中信大锰矿业有限责任公司大新锰矿分公司 | Steam curing method of baking-free manganese slag bricks |
| CN107283600A (en) * | 2017-06-19 | 2017-10-24 | 中交二航局第四工程有限公司安徽分公司 | A kind of prefabricated component preparation facilities |
| CN107283600B (en) * | 2017-06-19 | 2019-05-14 | 中交二航局第四工程有限公司安徽分公司 | A kind of prefabricated component preparation facilities |
| CN107443569A (en) * | 2017-06-22 | 2017-12-08 | 中交二航局第四工程有限公司安徽分公司 | Concrete prefabricated bridge plate production equipment |
| CN107443568A (en) * | 2017-06-22 | 2017-12-08 | 中交二航局第四工程有限公司安徽分公司 | If cable wire rolls up the concrete prefabricated bridge plate producing device of support frame |
| CN107443569B (en) * | 2017-06-22 | 2019-05-14 | 中交二航局第四工程有限公司安徽分公司 | Concrete prefabricated bridge plate production equipment |
| CN107443568B (en) * | 2017-06-22 | 2019-05-14 | 中交二航局第四工程有限公司安徽分公司 | If the concrete prefabricated bridge plate producing device of cable wire volume support frame |
| CN107283609B (en) * | 2017-06-22 | 2019-05-14 | 中交二航局第四工程有限公司安徽分公司 | Concrete prefabricated bridge plate hardening steam canopy |
| CN107283609A (en) * | 2017-06-22 | 2017-10-24 | 中交二航局第四工程有限公司安徽分公司 | Steam canopy is used in concrete prefabricated bridge plate hardening |
| CN108000694B (en) * | 2018-01-05 | 2023-10-27 | 河北益铁机电科技有限公司 | Pretensioned prestressed concrete track slab production line maintenance system and application thereof |
| CN108000694A (en) * | 2018-01-05 | 2018-05-08 | 河北益铁机电科技有限公司 | Pretensioning prestressed concrete track board assembly line curing system and its application |
| CN109366708A (en) * | 2018-11-30 | 2019-02-22 | 四川升腾元创机电技术研究有限公司 | The curing means and flowing water unit of unit flowing water method production track plates |
| CN109571735A (en) * | 2019-02-22 | 2019-04-05 | 云南建投第十建设有限公司 | Green bio low-voltage high-temperature steam press maintenance system |
| CN109702878A (en) * | 2019-03-04 | 2019-05-03 | 河间市宝泽龙金属材料有限公司 | Fragment-free track slab curing system |
| CN110434991A (en) * | 2019-08-10 | 2019-11-12 | 江龙 | A kind of precast concrete steam curing process |
| CN110483098A (en) * | 2019-09-27 | 2019-11-22 | 中铁十六局集团北京轨道交通工程建设有限公司 | A kind of method of type concrete steam maintenance in subway work |
| CN110962224A (en) * | 2019-12-31 | 2020-04-07 | 天津中匠建筑科技有限公司 | Test method and device for acquiring steam curing parameters of prefabricated part at low temperature and steam curing method |
| CN112248204A (en) * | 2020-09-28 | 2021-01-22 | 北京星航机电装备有限公司 | One-to-multiple fixed die table concrete precast slab maintenance system and maintenance method |
| CN114482012A (en) * | 2022-01-28 | 2022-05-13 | 中国建筑第八工程局有限公司 | Temperature-controlled maintenance system and method for buttress wall |
| CN114482012B (en) * | 2022-01-28 | 2023-12-01 | 中国建筑第八工程局有限公司 | Temperature control maintenance system and maintenance method for buttress wall |
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Application publication date: 20120613 |