CN103437288B - Forming method built by the high pier being applied to bridge construction - Google Patents
Forming method built by the high pier being applied to bridge construction Download PDFInfo
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- CN103437288B CN103437288B CN201310297437.1A CN201310297437A CN103437288B CN 103437288 B CN103437288 B CN 103437288B CN 201310297437 A CN201310297437 A CN 201310297437A CN 103437288 B CN103437288 B CN 103437288B
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Abstract
The invention discloses a kind of high pier being applied to bridge construction and build forming method, it is characterized in that, comprise the following steps: (1) builds roof insulating; (2) adopt the superposition of more piece isometric template in roof insulating inside and form shaft of high pier template; (3) based on the shaft of high pier template formed, at the inner primary concreting of roof insulating and the contour shaft of high pier of this shaft of high pier template; (4) remove all templates of below the superiors template, and with this superiors' template be lower joint pier shaft build time model sheetinstallat support; (5) height that often joint shaft of high pier is built later is the form height sum except the superiors' template described in (4), builds shaft of high pier successively, until built; (6) keep shaft of high pier in the maintenance of roof insulating inside holding, until final molding.By such scheme, present invention, avoiding the impact of cold snap on bridge construction, ensure that construction quality, there is very high practical value and promotional value.
Description
Technical field
The present invention relates to a kind of bridge Construction Technology, specifically, relate to a kind of high pier being applied to bridge construction and build forming method.
Background technology
Bridge construction has that the cycle is long, construction environment is poor, technical difficulty high, especially in this just very poor area of geographical environment.As: Shanxi Province's Shuozhou City is domestic, belong to continent monsoon climate, winter is very long, spring and autumn is connected, rain heat same period, solar radiation is strong, light application time is long, the temperature difference is comparatively large, frost-free period is short, drying is windy is the principal character of this regional climate.This area average temperature of the whole year 3.9-7.2 DEG C, Extreme Maximum Temperature 37.9 DEG C, Annual lowest climate temperature-40.4 DEG C, by genus cold district, railway engineering Study on Climate Division.
The bridge construction environment being similar to this cold district of Shuozhou, shanxi Province is a lot, and the people's livelihood of bridge construction relation, very urgent, even if external environment is severe, also must constructs as early as possible, to completing work items early, coming into operation.And under this cold environment, carry out bridge construction, not only require very high to the fitness of constructor, constructor is needed to work in cold environments for a long time, and it is also very high to the every construction process requirement in bridge construction process, conventional construction technology is difficult to make its result reach project acceptance inspection standard, easily occurs potential safety hazard.As: the sub-project constructions such as bridge king-pile, cushion cap, pier stud, beam, all there is temperature requirement to construction environment, if temperature cannot meet, the stake of building out, cushion cap, pier stud, beam etc. are very difficult to conform to quality requirements, cannot use, even if use reluctantly, also there is great potential safety hazard, finally cannot pass through the project acceptance inspection.
Summary of the invention
The object of the present invention is to provide a kind of high pier being applied to bridge construction to build forming method, the Bridge High-pier pier shaft mainly existed in solution prior art is cast in the problem that cold snap construction is difficult to ensure the quality of products.
To achieve these goals, the technical solution used in the present invention is as follows:
Forming method built by the high pier being applied to bridge construction, comprises the following steps:
(1) roof insulating is built;
(2) adopt the superposition of more piece isometric template in roof insulating inside and form shaft of high pier template;
(3) based on the shaft of high pier template formed, at the inner primary concreting of roof insulating and the contour shaft of high pier of this shaft of high pier template;
(4) remove all templates of below the superiors template, and with this superiors' template be lower joint pier shaft build time model sheetinstallat support;
(5) height that often joint shaft of high pier is built later is the form height sum except the superiors' template described in (4), builds shaft of high pier successively, until built;
(6) keep shaft of high pier in the maintenance of roof insulating inside holding, until final molding.
Further, build shaft of high pier for the first time in described (3) after, build the height all promoting once described roof insulating at every turn; The elevated height of cutting described roof insulating is completed by pillar crane.
Again further, form removable time is that the shaft of high pier intensity of building in described (3) reaches after form removal requires in described (4).
Further, described roof insulating inside adopts industrial fan heater heating; Described shaft of high pier inside adopts the heating of anthracite stove.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts the mode of self-built roof insulating to change construction environment, both the impact of external wind on construction had been avoided, in turn ensure that the temperature requirement in construction environment, make Bridge High-pier pier shaft no longer by the restriction of environment temperature, also can ensure that construction quality is up to standard even if construct in cold weather.
(2) the present invention adopts industrial fan heater to be roof insulating heating, and insulation temperature of shed can manual control, regulates at any time, thus makes construction environment temperature remain at the optimum temperature of project demand, and then for ensureing that construction quality lays a solid foundation.
(3) the present invention adopts the heating of anthracite stove to shaft of high pier inside, so both can ensure the temperature of shaft of high pier inside, the air quality of roof insulating can not be affected again, thus provide reliable environment-guarantee for the constructor in roof insulating, significantly reduce the impact that air quality is healthy on constructor.
(4) whole shaft of high pier pouring construction all completes in roof insulating, and the impact that constructor is subject to temperature in roof insulating is very little, even without impact, therefore, constructor can realize uninterrupted break tour operation in 24 hours, thus for farthest shortening the basis that construction period provides realization.
(5) the invention solves the adverse effect of construction environment temperature to project construction, links in work progress is achieved controlled, the temperature retention time of every section of concrete all can reach regulation requirement, therefore, project construction is that efficiency or quality all can reach state-set standard, kills two birds with one stone.
(6) principle of the invention is simple, and it is convenient to implement, and cost is not high, efficiently solves the adverse effect of low temperature environment to bridge construction, for bridge construction opens a new way, has very large innovative significance and very high practicality and promotional value.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
Construct for the shaft of high pier of a section of railway track bridge of cold district below.Suppose to need the high pier height of building to be 106m, for ensure section assembling beam according to schedule the duration assembled, the progress that 25-28# pier needs parallel operations to meet 1.6m ~ 1.9m/ days simultaneously can meet plan time.For accelerating construction progress, reduce the time of the template number of turnover and the insulation of increase pier shaft, 14m/ pier template need be configured, build 12m at every turn.
The construction overall principle: high pier construction takes the scheme of constructing in roof insulating, i.e. constructor's operation, template promote all to be carried out in roof insulating.For ensureing efficiency of construction and concrete temperature retention time, first set up the high roof insulating of 24m in shaft of high pier template outside.Roof insulating adopts self lift type Totally enclosed heat-preserving structure, and this structure is made up of steel pipe column, steel hoop, transverse truss, vertical truss, ceiling, tarpaulin five part.
Wherein, steel pipe column is load-bearing pillar, totally 12, is supported on cushion cap end face.Concrete method to set up is: 12 steel pipe columns surround a coffin, specifically, be rectangle four angles on a steel pipe column is respectively set, then two steel pipe columns are set again between adjacent two angles, and the steel pipe center to center distance of direction across bridge is 6.4m, along bridge to steel pipe center to center distance be 5.2m.Diameter of steel tube is 1000mm, wall thickness 10mm.Steel pipe column height is about than high pier height 4m, and the steel pipe saved by 6m mono-is formed by Bolt Connection, and steel pipe column is affixed by shaped steel every 20m and bridge pier.
Steel hoop is welded by 4 square steel, is welded with 4 supporting legs inside it, in roof insulating jacking process, play guide effect.Every root steel pipe column is all equipped with steel hoop, and between every layer, spacing is 6m.Adopt beret truss to connect as transverse truss between the steel hoop of every layer, between the steel hoop of levels, adopt vertical truss to connect.
Ceiling is supported on the steel hoop of the superiors, is welded by shaped steel.Inside ceiling and truss, tarpaulin is installed, and is connected with bridge pier bottom roof insulating, guarantee the space that roof insulating inside formation one is airtight.
So, roof insulating is just built and is completed.After this, adopt the template of 7 joint 2m to carry out superposition and form shaft of high pier template, to realize turnover.First time builds pier shaft 14m, meets after form removal requirement until pier shaft concrete strength, removes the six joint templates that first time builds below pier shaft top of concrete 2m template, only leaves the 2m template of the superiors, as the support of model sheetinstallat during lower joint pier construction.After this build 12m, until pier shaft height reaches 106m at every turn.Concrete all carries out in roof insulating, and the concrete after form removal is in all the time in canopy and carries out insulated curing, makes it remain at the temperature being applicable to use.And in casting process, utilize pillar crane to increase the height of steel pipe column, thus make the height of roof insulating increase along with pier shaft height and increase, make shaft of high pier be in roof insulating inside all the time.Because shaft of high pier builds beginning from second time, build at every turn and be highly 12m, therefore each also hoisting depth 12m of the steel pipe column of roof insulating.As for the lifting of shaft of high pier template, then the electric block arranged in pier is relied on to complete.
In work progress, the inside and outside employing of pier shaft two kinds of heating modes: pier shaft inside adopts the heating of anthracite stove, pier shaft outside and roof insulating inside adopt industrial fan heater heating.Because warm-air drier is controlled, constructor is constructed in roof insulating very little by inside even from weather, almost can ignore, therefore break tour operation in 24 hours can be carried out, and ensure that the temperature retention time of every section of concrete reaches 12 day time, thus realize controlling to pier shaft concrete quality, make the construction quality of shaft of high pier reach project acceptance inspection standard.
So, the molding construction of building of Bridge High-pier pier shaft just completes.
Above-described embodiment is only a preferred embodiment of the present invention, not limits protection scope of the present invention, as long as adopt design principle of the present invention, and the non-creativeness conversion carried out in this technical foundation, all belong to protection scope of the present invention.
Claims (4)
1. forming method built by the high pier being applied to bridge construction, it is characterized in that, comprises the following steps:
(1) first set up the high roof insulating of 24m in shaft of high pier template outside, roof insulating adopts self lift type Totally enclosed heat-preserving structure, and this structure is made up of steel pipe column, steel hoop, transverse truss, vertical truss, ceiling, tarpaulin five part; Steel pipe column is load-bearing pillar, totally 12, and 12 steel pipe columns surround a coffin, four angles of rectangle respectively arrange a steel pipe column, then two steel pipe columns are set again between adjacent two angles, and the steel pipe column center to center distance of direction across bridge is 6.4m, along bridge to steel pipe column center to center distance be 5.2m; Thickness of steel pipe 10mm; The steel pipe that steel pipe column is saved by 6m mono-is formed by Bolt Connection; Steel hoop is welded by 4 square steel, is welded with 4 supporting legs inside it, in roof insulating jacking process, play guide effect; Every root steel pipe column is all equipped with steel hoop, between the steel hoop with layer, adopts beret truss to connect as transverse truss, between the steel hoop of levels, adopt vertical truss to connect; Ceiling is supported on the steel hoop of the superiors, is welded by shaped steel, and roof insulating inside forms an airtight space;
(2) adopt in roof insulating inside the template of 7 joint 2m to carry out superposition and form shaft of high pier template; First time builds pier shaft 14m, meets after form removal requirement until pier shaft concrete strength, removes the six joint templates that first time builds below pier shaft top of concrete 2m template, only leaves the 2m template of the superiors, as the support of model sheetinstallat during lower joint pier construction; After this build 12m at every turn, build shaft of high pier successively, until built;
(3) keep shaft of high pier in the maintenance of roof insulating inside holding, until final molding.
2. forming method built by the high pier being applied to bridge construction according to claim 1, and it is characterized in that, the elevated height of roof insulating is completed by pillar crane.
3. forming method built by the high pier being applied to bridge construction according to claim 2, it is characterized in that, described roof insulating inside adopts industrial fan heater heating.
4. forming method built by the high pier being applied to bridge construction according to claim 3, it is characterized in that, described shaft of high pier inside adopts the heating of anthracite stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310297437.1A CN103437288B (en) | 2013-07-16 | 2013-07-16 | Forming method built by the high pier being applied to bridge construction |
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| CN201310297437.1A CN103437288B (en) | 2013-07-16 | 2013-07-16 | Forming method built by the high pier being applied to bridge construction |
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| CN103437288A CN103437288A (en) | 2013-12-11 |
| CN103437288B true CN103437288B (en) | 2015-12-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625189B (en) * | 2016-01-25 | 2020-05-15 | 赵立财 | Hollow high pier concrete placement heat preservation maintenance system |
| CN105951599B (en) * | 2016-05-23 | 2018-10-09 | 中交第一航务工程局有限公司 | High column mould bases integrated construction technique |
| CN108385528B (en) * | 2016-09-18 | 2019-06-28 | 山东省交通科学研究院 | A kind of application method of low temperature season pier stud concrete heat-insulating health preserving equipment |
Citations (4)
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|---|---|---|---|---|
| KR20050082024A (en) * | 2004-02-17 | 2005-08-22 | (주)다산컨설턴트 | Heating panel of bridge for winter work |
| CN102108678A (en) * | 2011-01-18 | 2011-06-29 | 龙建路桥股份有限公司 | High-altitude construction complete set device and method in winter |
| CN202194074U (en) * | 2011-09-02 | 2012-04-18 | 中铁上海工程局有限公司 | Pier body heat-insulating template |
| CN202416186U (en) * | 2012-01-16 | 2012-09-05 | 中交第一公路工程局有限公司 | Concrete insulation hood for piers in winter construction |
-
2013
- 2013-07-16 CN CN201310297437.1A patent/CN103437288B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050082024A (en) * | 2004-02-17 | 2005-08-22 | (주)다산컨설턴트 | Heating panel of bridge for winter work |
| CN102108678A (en) * | 2011-01-18 | 2011-06-29 | 龙建路桥股份有限公司 | High-altitude construction complete set device and method in winter |
| CN202194074U (en) * | 2011-09-02 | 2012-04-18 | 中铁上海工程局有限公司 | Pier body heat-insulating template |
| CN202416186U (en) * | 2012-01-16 | 2012-09-05 | 中交第一公路工程局有限公司 | Concrete insulation hood for piers in winter construction |
Non-Patent Citations (1)
| Title |
|---|
| 青藏铁路三岔河特大桥空心薄壁高墩寒季混凝土施工技术;曹玉新;《中国安全科学学报》;20060131;第16卷(第1期);第99页右栏最后一段、第100页右栏最后一段、第101页左栏第1段及图1 * |
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Address after: The eastern section of the town of Xueyuan Road Xindu Xindu District of Chengdu city of Sichuan Province, No. 289 610000 Applicant after: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP OF THE FIFTH ENGINEERING Co.,Ltd. Applicant after: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP Co.,Ltd. Address before: The eastern section of the town of Xueyuan Road Xindu Xindu District of Chengdu city of Sichuan Province, No. 289 610000 Applicant before: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP OF THE FIFTH ENGINEERING Co.,Ltd. Applicant before: China thirteen Railway Construction Bureau Group Co.,Ltd. Address after: The eastern section of the town of Xueyuan Road Xindu Xindu District of Chengdu city of Sichuan Province, No. 289 610000 Applicant after: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP OF THE FIFTH ENGINEERING Co.,Ltd. Applicant after: China thirteen Railway Construction Bureau Group Co.,Ltd. Address before: The eastern section of the town of Xueyuan Road Xindu Xindu District of Chengdu city of Sichuan Province, No. 289 610000 Applicant before: Fifth Engineering Co.,Ltd. of China Railway 13th Bureau Group Applicant before: CHINA RAILWAY 13TH BUREAU GROUP Co.,Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: CHINESE RAILWAY CONSTRUCTION 13TH BUREAU GROUP CO., LTD. TO: CHINESE RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP CO., LTD. Free format text: CORRECT: APPLICANT; FROM: CHINA RAILWAY 13TH BUREAU GROUP CO., LTD. TO: CHINESE RAILWAY CONSTRUCTION 13TH BUREAU GROUP CO., LTD. Free format text: CORRECT: APPLICANT; FROM: CR13BG NO.5 ENGINEERING CO., LTD. TO: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP OF THE FIFTH ENGINEERING CO., LTD. |
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