CN103276663B - Method for manufacturing assembled integral plate for reinforced concrete slab bridge - Google Patents
Method for manufacturing assembled integral plate for reinforced concrete slab bridge Download PDFInfo
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- CN103276663B CN103276663B CN201310201021.5A CN201310201021A CN103276663B CN 103276663 B CN103276663 B CN 103276663B CN 201310201021 A CN201310201021 A CN 201310201021A CN 103276663 B CN103276663 B CN 103276663B
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Abstract
The invention discloses a method for manufacturing an assembled integral plate for a reinforced concrete slab bridge. The method comprises the following steps that prefabricated reinforced concrete plates are mounted, a construction groove of a wet joint is formed between two adjacent prefabricated reinforced concrete plates, rectangular stirrups and U-shaped connecting reinforcements are bound together, then longitudinal construction reinforcements are inserted into the rectangular stirrups and the U-shaped connecting reinforcements, the longitudinal construction reinforcements, the rectangular stirrups and the U-shaped connecting reinforcements form a reinforcement framework in a binding and connecting mode, UEA shrinkage-compensating concrete is poured into the construction grooves of the wet joints, moisture preservation and maintenance are carried out on the poured UEA shrinkage-compensating concrete for at least 14 days, and therefore the assembled integral plate for the reinforced concrete slab bridge is obtained. The method integrates the advantages of a prefabricating and assembling type construction method which has the advantages of being high in speed, low in cost and excellent in force bearing performance of an overall slab bridge, the manufactured plate is good in overall performance, the situation that a single plate bears force can be effectively avoided, later cost of maintenance and maintenance and reinforcement is saved, and construction quality is guaranteed.
Description
Technical field
The invention belongs to technical field of structural engineering, particularly a kind of preparation method of the assembled integral plate for steel concrete slab bridge, institute's making sheet is applicable to high-grade highway across the board-like structure of steel concrete within the scope of 5 ~ 10 meters, footpath.
Background technology
Over nearly 20 years, high-grade highway construction engineering day by day increases, the key of bridge engineering highway construction and difficult point, accounts for the large percentage of bridge quantity at route total kilometrage Short/Medium Span Bridge (single hole is across 5 ~ 10 meters, footpath).
In bridge on highway, 5 ~ 10 meters of bridges across footpath have 2 kinds of implementation methods usually: one is steel reinforced concrete assembling hinged slab bridge, computational analysis is carried out by the hinged theory of plane bar mechanism, in use procedure, hinge particularly under undesirably heavy loads between ubiquity plate and plate is stitched and is easily damaged phenomenon, causes single slab bearing situation to occur, and have impact on supporting capacity and the safe operation of bridge, costly, effect is general and maintenance and reinforcement construction often affects existing traffic for its maintenance and reinforcement, another kind is cast-in-situ steel reinforced concrete monolithic concrete plate bridge, occur for avoiding single slab bearing situation, have at present some areas speedway 5 ~ 10 meters start to adopt cast-in-situ steel reinforced concrete monolithic concrete plate bridge across footpath bridge, cast-in-situ steel reinforced concrete monolithic concrete plate bridge good mechanical properties, single slab bearing situation is there will not be in use procedure, but because construction adopts cast-in-place method, support, template consumption is large, cost is higher, and top and the bottom parallelism structural construction can not be realized, duration is longer, in addition, in highway engineering, 5 ~ 10 meters of bridge bridge types across footpath are arranged and are usually obeyed route trend, often be arranged to skew bridge, and the width of bridge on highway is generally between 12m ~ 20m at present, width is far longer than span, belong to wide bridge, when the gradient of wide bridge is greater than 30 °, as adopted cast-in-situ concrete monolithic concrete plate bridge, easily occur that end reaction is uneven, acute angle place seat empty, the phenomenons such as soleplate crack, maintenance and renovation is very difficult, affect bridge durability and functional performance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of preparation method of the assembled integral plate for steel concrete slab bridge is provided.
Concrete steps are:
(1) precast rc slab is installed, the structure groove of wet seam is formed between two contiguous prefabricated armored concrete slabs, the height of wet seam is 15 ~ 18 centimetres, the wet top of seam flushes with the top of precast rc slab, the two limb in openend of the part interior embedded U-shaped connecting reinforcement that the side of precast rc slab contacts with wet seam, the closing end that U-shaped connecting reinforcement stretches out precast rc slab extend into wet seam inside, in the closed end position of the U-shaped connecting reinforcement being embedded in adjacent two pieces of precast rc slab inside, rectangle hoop is set, at U-shaped connecting reinforcement and rectangle hoop overlapping region, longitudinal structure reinforcing bar is set, longitudinal structure reinforcing bar inserts rectangle hoop and U-shaped connecting reinforcement.
Described precast rc slab is Filled Rectangle plate, its width depends on the circumstances, when precast rc slab is side plate, its width equals a lane width and adds that anticollision barrier width deducts 1/2nd of a wet joint gap again, when precast rc slab is middle plate, its width equals the width that a lane width deducts wet seam.
Described wet seam is parallel with longitudinal direction and direction of traffic, distance between adjacent two wet seams is a lane width, the width of wet seam is 50 centimetres, wet seam adopts UEA expansive concrete to build, UEA expansive concrete is that UEA expansion agent joins concrete obtained in cement concrete, and wherein UEA expansion agent accounts for 8 ~ 12% of the total cement weight of UEA expansive concrete.
The length of the two limb in openend that described U-shaped connecting reinforcement is embedded in precast rc slab is 30 centimetres, the distance that the closing end that U-shaped connecting reinforcement stretches out precast rc slab extend into wet seam inside is 24 centimetres, the longitudinal direction of U-shaped connecting reinforcement and direction of traffic spacing are 10 centimetres, U-shaped connecting reinforcement is that diameter is 12 millimeters and strength grade is the notched bars of HRB335 or HRB400, and the longitudinal direction of rectangle hoop and direction of traffic spacing equal longitudinal direction and the direction of traffic spacing of U-shaped connecting reinforcement.
Described rectangle hoop and longitudinal structure reinforcing bar are all that diameter is 12 millimeters and strength grade is the notched bars of HRB335.
(2) by rectangle hoop together with the colligation of U-shaped connecting reinforcement, then longitudinal structure reinforcing bar is inserted rectangle hoop and U-shaped connecting reinforcement, and longitudinal structure reinforcing bar and rectangle hoop and U-shaped connecting reinforcement is connected to form cage of reinforcement by colligation; Again UEA expansive concrete is built the structure groove into wet seam, to build into UEA expansive concrete carry out moisture-keeping maintaining and be no less than 14 days, namely obtain the assembled integral plate for steel concrete slab bridge.
Method of the present invention compared with prior art, has the following advantages:
(1) the inventive method combines the advantage that prefabricated assembled construction method speed is fast, cost is low and overall slab bridge stress performance is excellent.
(2) simple structure of the assembled integral plate for steel concrete slab bridge that the inventive method is made, possesses the advantage of cast-in-place integral slab bridge, overall performance is excellent, single slab bearing situation can be effectively avoided to occur, save maintenance and the maintenance and reinforcement expense in later stage, and construction quality is guaranteed.
(3) when being applied to bridges in highway engineering, the advantage that prefabricated slab bridge can be had concurrently and can realize top and the bottom parallelism structural construction, the duration is short and cast-in-place integral formula slab bridge stress performance is superior, there will not be single slab bearing phenomenon.
Accompanying drawing explanation
Fig. 1 is the horizontal namely perpendicular to direction of traffic structural representation of the made assembled integral plate for steel concrete slab bridge of the present invention.
Fig. 2 be in the present invention two pieces of adjacent precast rc slabs install before laterally namely perpendicular to the generalized section of direction of traffic.
Fig. 3 is the steel bar plane structural representation in the wet seam of the made assembled integral plate for steel concrete slab bridge of the present invention.
Fig. 4 is the bar connecting structure close-up schematic view in the wet seam of the made assembled integral plate for steel concrete slab bridge of the present invention.
Fig. 5 is the planar configuration schematic diagram of the made assembled integral plate for steel concrete slab bridge of the present invention.
Mark in figure: 1-precast rc slab; 2-wets seam; 3-U shape connecting reinforcement; 4-rectangle hoop; 5-longitudinal structure reinforcing bar; 6-seat supports line; 7-longitudinal direction and direction of traffic.
Detailed description of the invention
embodiment:
(1) precast rc slab 1 is installed, the structure groove of wet seam 2 is formed between two contiguous prefabricated armored concrete slabs 1, the height of wet seam 2 is 15 centimetres, the top of wet seam 2 flushes with the top of precast rc slab 1, the two limb in openend of the part interior embedded U-shaped connecting reinforcement 3 that the side of precast rc slab 1 contacts with wet seam 2, the closing end that U-shaped connecting reinforcement 3 stretches out precast rc slab 1 extend into wet seam 2 inside, in the closed end position of the U-shaped connecting reinforcement 3 being embedded in adjacent two pieces of precast rc slab 1 inside, rectangle hoop 4 is set, at U-shaped connecting reinforcement 3 and rectangle hoop 4 overlapping region, longitudinal structure reinforcing bar 5 is set, longitudinal structure reinforcing bar 5 inserts rectangle hoop 4 and U-shaped connecting reinforcement 3.
Described precast rc slab 1 is Filled Rectangle plate, and when precast rc slab 1 is side plate, its width is 3.5 meters, and when precast rc slab 1 is middle plate, its width is 3 meters.
Described wet seam 2 is parallel with longitudinal direction and direction of traffic 7, distance between adjacent two wet seams 2 is a lane width, the width of wet seam 2 is 50 centimetres, wet seam 2 adopts UEA expansive concrete to build, UEA expansive concrete is that UEA expansion agent joins concrete obtained in cement concrete, and wherein UEA expansion agent accounts for 10% of the total cement weight of UEA expansive concrete.
The length of the two limb in openend that described U-shaped connecting reinforcement 3 is embedded in precast rc slab 1 is 30 centimetres, the distance that the closing end that U-shaped connecting reinforcement 3 stretches out precast rc slab 1 extend into wet seam 2 inside is 24 centimetres, longitudinal direction and direction of traffic 7 spacing of U-shaped connecting reinforcement 3 are 10 centimetres, U-shaped connecting reinforcement 3 is that diameter is 12 millimeters and strength grade is the notched bars of HRB400, and the longitudinal direction of rectangle hoop 4 and direction of traffic 7 spacing equal longitudinal direction and direction of traffic 7 spacing of U-shaped connecting reinforcement 3.
Described rectangle hoop 4 and longitudinal structure reinforcing bar 5 are all that diameter is 12 millimeters and strength grade is the notched bars of HRB335.
(2) by rectangle hoop 4 together with U-shaped connecting reinforcement 3 colligation, then longitudinal structure reinforcing bar 5 is inserted rectangle hoop 4 and U-shaped connecting reinforcement 3, and longitudinal structure reinforcing bar 5 and rectangle hoop 4 and U-shaped connecting reinforcement 3 are connected to form cage of reinforcement by colligation; Again UEA expansive concrete is built the structure groove into wet seam 2, to build into UEA expansive concrete carry out moisture-keeping maintaining 14 days, namely obtain the assembled integral plate for steel concrete slab bridge.
Specific embodiment described by this detailed description of the invention is only to the explanation for example of the present invention's spirit; those skilled in the art can make described specific embodiment various amendment supplement or adopt similar mode to substitute, but spirit of the present invention can't be departed from or surmount appended claims limit protection domain.
Claims (1)
1., for a preparation method for the assembled integral plate of steel concrete slab bridge, it is characterized in that concrete steps are:
(1) precast rc slab is installed, the structure groove of wet seam is formed between two contiguous prefabricated armored concrete slabs, the height of wet seam is 15 ~ 18 centimetres, the wet top of seam flushes with the top of precast rc slab, the two limb in openend of the pre-buried U-shaped connecting reinforcement of part interior that the side of precast rc slab contacts with wet seam, the closing end that U-shaped connecting reinforcement stretches out precast rc slab extend into wet seam inside, in the closed end position of the U-shaped connecting reinforcement being embedded in adjacent two pieces of precast rc slab inside, rectangle hoop is set, at U-shaped connecting reinforcement and rectangle hoop overlapping region, longitudinal structure reinforcing bar is set, longitudinal structure reinforcing bar inserts the overlapping region of rectangle hoop and U-shaped connecting reinforcement,
Described precast rc slab is Filled Rectangle plate, its width depends on the circumstances, when precast rc slab is side plate, its width equals a lane width and adds that anticollision barrier width deducts 1/2nd wet joint gaps again, when precast rc slab is middle plate, its width equals the width that a lane width deducts wet seam;
Described wet seam is parallel with longitudinal direction and direction of traffic, distance between adjacent two wet seams is a lane width, the width of wet seam is 50 centimetres, wet seam adopts UEA expansive concrete to build, UEA expansive concrete is that UEA expansion agent joins concrete obtained in cement concrete, and wherein UEA expansion agent accounts for 8 ~ 12% of the total cement weight of UEA expansive concrete;
The length of the two limb in openend that described U-shaped connecting reinforcement is embedded in precast rc slab is 30 centimetres, the distance that the closing end that U-shaped connecting reinforcement stretches out precast rc slab extend into wet seam inside is 24 centimetres, the longitudinal direction of U-shaped connecting reinforcement and direction of traffic spacing are 10 centimetres, U-shaped connecting reinforcement is that diameter is 12 millimeters and strength grade is the notched bars of HRB335 or HRB400, and the longitudinal direction of rectangle hoop and direction of traffic spacing equal longitudinal direction and the direction of traffic spacing of U-shaped connecting reinforcement;
Described rectangle hoop and longitudinal structure reinforcing bar are all that diameter is 12 millimeters and strength grade is the notched bars of HRB335;
(2) by rectangle hoop together with the colligation of U-shaped connecting reinforcement, then longitudinal structure reinforcing bar is inserted the overlapping region of rectangle hoop and U-shaped connecting reinforcement, and longitudinal structure reinforcing bar and rectangle hoop and U-shaped connecting reinforcement are connected to form cage of reinforcement by colligation; Again UEA expansive concrete is built the structure groove into wet seam, to build into UEA expansive concrete carry out moisture-keeping maintaining and be no less than 14 days, namely obtain the assembled integral plate for steel concrete slab bridge.
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| CN201310201021.5A CN103276663B (en) | 2013-05-28 | 2013-05-28 | Method for manufacturing assembled integral plate for reinforced concrete slab bridge |
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| CN201310201021.5A CN103276663B (en) | 2013-05-28 | 2013-05-28 | Method for manufacturing assembled integral plate for reinforced concrete slab bridge |
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| CN103276663B true CN103276663B (en) | 2015-07-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104264786B (en) * | 2014-09-29 | 2016-08-17 | 中铁四局集团有限公司 | The bar connecting mode of a kind of prefabricated concrete element and application thereof |
| CN107165038B (en) * | 2017-07-13 | 2018-12-07 | 北京市市政工程设计研究总院有限公司 | A kind of complete prefabricated substructure and construction method of bridge |
| CN107663819B (en) * | 2017-10-26 | 2024-02-23 | 安徽省交通控股集团有限公司 | Prefabricated beam slab segment group for assembled pavement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU541916A1 (en) * | 1974-04-22 | 1977-01-05 | Специальное Конструкторское Бюро Главмостостроя | Precast concrete bridge |
| KR20090046323A (en) * | 2007-11-05 | 2009-05-11 | (주)디엠엔지니어링 | Connecting method of girder with integrated slab and horizontal moving method of girder |
| KR20100137749A (en) * | 2009-06-23 | 2010-12-31 | 정석으뜸기술(주) | Precast concrete girder unified with slab |
| JP2012082622A (en) * | 2010-10-12 | 2012-04-26 | Yokogawa Koji Kk | Construction method of bridge floor slab and joint structure of precast floor slab |
| CN102943431A (en) * | 2012-11-01 | 2013-02-27 | 中交第二公路勘察设计研究院有限公司 | Cast-in-place reinforced concrete plate and fabricated reinforced concrete plate splicing bridge and method |
| JP2013053413A (en) * | 2011-09-01 | 2013-03-21 | Maeda Corp | Construction method for slab, shear reinforcement, and concrete beam structure |
-
2013
- 2013-05-28 CN CN201310201021.5A patent/CN103276663B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU541916A1 (en) * | 1974-04-22 | 1977-01-05 | Специальное Конструкторское Бюро Главмостостроя | Precast concrete bridge |
| KR20090046323A (en) * | 2007-11-05 | 2009-05-11 | (주)디엠엔지니어링 | Connecting method of girder with integrated slab and horizontal moving method of girder |
| KR20100137749A (en) * | 2009-06-23 | 2010-12-31 | 정석으뜸기술(주) | Precast concrete girder unified with slab |
| JP2012082622A (en) * | 2010-10-12 | 2012-04-26 | Yokogawa Koji Kk | Construction method of bridge floor slab and joint structure of precast floor slab |
| JP2013053413A (en) * | 2011-09-01 | 2013-03-21 | Maeda Corp | Construction method for slab, shear reinforcement, and concrete beam structure |
| CN102943431A (en) * | 2012-11-01 | 2013-02-27 | 中交第二公路勘察设计研究院有限公司 | Cast-in-place reinforced concrete plate and fabricated reinforced concrete plate splicing bridge and method |
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Effective date of registration: 20210207 Address after: 215000 room 206, Yuhuayuan shopping plaza, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Sanmu Intellectual Property Service Co.,Ltd. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin Construction Road No. 12 Patentee before: GUILIN University OF TECHNOLOGY |
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