CN210288124U - A cast-in-place box girder bottom web steel bar segment prefabricated binding tire - Google Patents
A cast-in-place box girder bottom web steel bar segment prefabricated binding tire Download PDFInfo
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- CN210288124U CN210288124U CN201920699781.6U CN201920699781U CN210288124U CN 210288124 U CN210288124 U CN 210288124U CN 201920699781 U CN201920699781 U CN 201920699781U CN 210288124 U CN210288124 U CN 210288124U
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Abstract
本实用新型属于现浇箱梁技术领域，公开了一种现浇箱梁底腹板钢筋分节段预制绑扎胎具，包括底板支架和侧板支架，所述底板支架和侧板支架组成截面为矩形的框架，底板支架上设有底板绑扎部分，侧板支架上设有腹板绑扎部分，所述底板支架由若干根横梁和纵梁垂直交叉焊接而成，底板支架横梁上表面还设有底板钢筋定位槽，所述定位槽开口向上用于定位底板钢筋，本实用新型具有结构简单，绑扎效率高的优点。
The utility model belongs to the technical field of cast-in-situ box girder, and discloses a segmented prefabricated tie-wrap for the bottom web of a cast-in-place box girder, comprising a bottom plate bracket and a side plate bracket. A rectangular frame, the bottom plate bracket is provided with a bottom plate binding part, and the side plate bracket is provided with a web plate binding part. The steel bar positioning groove is used for positioning the steel bars of the bottom plate with the opening of the positioning groove upward. The utility model has the advantages of simple structure and high binding efficiency.
Description
Technical Field
The utility model belongs to the technical field of cast-in-place box girder, especially, relate to a prefabricated ligature mould of cast-in-place box girder bottom web reinforcing bar segmental type.
Background
A front-paved sea-crossing bridge is an independent sea-crossing bridge project with the largest scale so far in Hainan province, and is a key project of 'one bridge and four ways' in Hainan province, the bridge is located between a front town of paving in Hainan Wenchang and a city village of Haikou Tower, is 3.96 kilometers long and is provided with six bidirectional lanes, wherein a bridge approach at the side of a Haikou is a prestressed concrete box girder with the length of 50 meters, and is constructed by adopting a descending movable formwork, wherein the processing and installation of reinforcing steel bars are one of key processes for ensuring the quality and the progress of a beam slab, a common method for installing the framework reinforcing steel bars of the box girder is that scales are drawn on a formwork by using paint, the reinforcing steel bars are placed along the scales, the construction process has to wait for tensioning, formwork walking, closing and adjusting the formwork after the box girder is poured, the reinforcing steel bar installation operation can be carried out, and the flow operation.
Disclosure of Invention
The utility model aims at providing a prefabricated ligature mould of cast-in-place box girder bottom web reinforcing bar segmentation section ensures promptly that the on-spot ligature installation spacing error of framework of steel reinforcement is controllable, and the time that the reinforcing bar ligature occupy on the die block that has significantly reduced has brought very big convenience for the construction, is applicable to at the construction of the continuous cast in situ concrete bridge of the big footpath of striding in places such as mud flat, gorge, city overpass, cross river, cross sea bridge.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a cast-in-place box girder bottom web plate reinforcing steel bar segmental prefabrication binding method comprises the following steps:
1) manufacturing a box girder bottom web steel bar segmental prefabricated binding mould according to the box girder span, the size of the bottom web steel bar, the steel bar interval and the model;
2) arranging notch grooves at corresponding positions on the clamping fixture for positioning;
3) binding the box girder bottom web plate steel bars on a clamping fixture together in sections;
4) and hoisting the bottom web plate steel bars into a die through a steel reinforcement cage lifting appliance and a gantry crane, hoisting the prefabricated inner film, and finally performing on-site binding and forming on the bridge deck steel bars.
The utility model provides a prefabricated ligature mould of cast-in-place box girder bottom web reinforcing bar segmental, includes bottom plate support and curb plate support, the frame that the cross-section is the rectangle is constituteed to bottom plate support and curb plate support, is equipped with bottom plate ligature part on the bottom plate support, is equipped with web ligature part on the curb plate support, the bottom plate support is formed by the perpendicular cross welding of a plurality of crossbeams and longeron, and bottom plate support crossbeam upper surface still is equipped with bottom plate reinforcing bar constant head tank, the constant head tank opening upwards is used for the positioning bottom plate.
Further, the curb plate support is including locating a plurality of bracket components of bottom plate support left and right sides symmetry, the bracket component evenly sets up along longeron length direction, every bracket component all with crossbeam tip fixed connection, the quantity of bracket component is the same with crossbeam quantity, every bracket component including the vertical welding in the montant of crossbeam tip and with the fixed welded slope web in montant top, still be equipped with between montant and the web many with crossbeam parallel arrangement's horizontal pole, right angled triangle is constituteed in montant, web and horizontal pole cross-section.
Further, a construction platform is further arranged on the upper portion of the outer side of the support component and is fixedly connected with the vertical rods of the support component, a guardrail is further arranged on the construction platform, and the length of the construction platform is the same as that of the longitudinal beam of the bottom plate support.
Furthermore, angle irons which are uniformly distributed are further arranged on the upper surface of the web plate.
Further, the construction platform is 0.5m wide and is made of 5 pieces of phi 20 threaded steel with the distance of 12.5cm, the platform guardrail is 80cm high and is made of 2 pieces of phi 16 threaded steel with the distance of 40 cm.
Further, connect through the strengthening rib between a plurality of bracket components, strengthening rib length is the same with longeron length and with longeron parallel arrangement, the web is formed by down tube and vertical pole welding, vertical pole length is the same with longeron length and with longeron parallel arrangement.
Furthermore, still be equipped with a plurality of support down tube between construction platform bottom and the montant, a plurality of support down tube evenly set up along longeron length direction.
The utility model has the advantages that:
1. the binding method has the advantages that the pre-binding quality of the steel bars is good, the pre-binding position of the steel bars is accurate, the space and the steel bar protection layer meet the design requirements, the error of the on-site binding and installation space of the steel bar framework is ensured to be controllable, and the time occupied by binding the steel bars on the bottom die is greatly reduced;
2. through preparation case roof beam framework of steel reinforcement ligature location bed-jig, adopt the mould location, wholly carry out the merogenesis ligature to bottom web framework of steel reinforcement, wait stretch-draw and die carrier walking, compound die, transfer the mould period to carry out the reinforcement after the case roof beam is pour, become parallel operation from the line production, reduce the nest worker phenomenon that waits for arousing, reach the purpose of accelerating the construction progress.
Drawings
Fig. 1 is a front view structure schematic diagram of a prefabricated binding mould for a cast-in-place box girder bottom web steel bar in a segmental manner.
FIG. 2 is a schematic side view structure diagram of a prefabricated binding mould for a cast-in-place box girder bottom web reinforcing steel bar in sections.
1. A base plate bracket; 11. a cross beam; 111. positioning a groove; 12. a stringer; 2. a side plate bracket; 21. a vertical rod; 22. a web; 3. reinforcing ribs; 4. angle iron; 5. a cross bar; 6. a construction platform; 7. and supporting the diagonal rods.
Detailed Description
A cast-in-place box girder bottom web plate reinforcing steel bar segmental prefabrication binding method comprises the following steps:
1) manufacturing a box girder bottom web steel bar segmental prefabricated binding mould according to the box girder span, the size of the bottom web steel bar, the steel bar interval and the model;
2) arranging notch grooves at corresponding positions on the clamping fixture for positioning;
3) binding the box girder bottom web plate steel bars on a clamping fixture together in sections;
4) and hoisting the bottom web plate steel bars into a die through a steel reinforcement cage lifting appliance and a gantry crane, hoisting the prefabricated inner film, and finally performing on-site binding and forming on the bridge deck steel bars.
A prefabricated binding mould for a cast-in-place box girder bottom web plate steel bar in a segmental manner comprises a bottom plate support 1 and a side plate support 2, wherein the bottom plate support 1 and the side plate support 2 form a frame with a rectangular cross section, a bottom plate binding part is arranged on the bottom plate support 1, a web plate binding part is arranged on the side plate support 2, the bottom plate support 1 is formed by vertically and crossly welding a plurality of cross beams 11 and longitudinal beams 12, a bottom plate steel bar positioning groove 111 is further arranged on the upper surface of the cross beam 11 of the bottom plate support 1, and an opening of the positioning groove 111 is upwards used for positioning a; further, the side plate support 2 comprises a plurality of support components which are arranged on the left side and the right side of the bottom plate support 1 and are symmetrical, the support components are uniformly arranged along the length direction of the longitudinal beam 12, each support component is fixedly connected with the end part of the transverse beam 11, the number of the support components is the same as that of the transverse beam 11, each support component comprises a vertical rod 21 vertically welded on the end part of the transverse beam 11 and an inclined web 22 fixedly welded with the top of the vertical rod 21, the plurality of support components are connected through a reinforcing rib 3, the length of the reinforcing rib 3 is the same as that of the longitudinal beam 12 and is arranged in parallel with the longitudinal beam 12, angle irons 4 uniformly distributed are further arranged on the upper surface of the web 22, the web 22 is formed by welding an inclined rod and a longitudinal rod, the length of the longitudinal rod is the same as that of the longitudinal beam and is arranged, the sections of the vertical rods 21, the web plates 22 and the cross rods 5 form a right-angled triangle; the upper part of the outer side of the support assembly is also provided with a construction platform 6, the construction platform 6 is fixedly connected with a vertical rod 21 of the support assembly, the construction platform 6 is also provided with a guardrail, and the length of the construction platform 6 is the same as that of a longitudinal beam 12 of the bottom plate support; the construction platform 6 is 0.5m wide and is made of 5 pieces of phi 20 threaded steel with the distance of 12.5cm, the platform guardrail is 80cm high and is made of 2 pieces of phi 16 threaded steel with the distance of 40cm, a plurality of supporting inclined rods 7 are further arranged between the bottom of the construction platform 6 and the vertical rods, and the supporting inclined rods 7 are uniformly arranged along the length direction of the longitudinal beam 12.
The cast-in-place box girder bottom web plate reinforcement cage and the prestressed pipeline are bound and formed by manufacturing and positioning moulds in sections, the moulds are arranged on the poured girder sections, the bottom plate and the web plate are bound together in sections, then the bottom web plate reinforcement is hoisted into a mould through a reinforcement cage hoist and a gantry crane, a prefabricated inner membrane is hoisted, and the bridge deck reinforcement is bound additionally; through preparation case roof beam framework of steel reinforcement ligature location bed-jig, adopt the mould location, wholly carry out the merogenesis ligature to bottom web framework of steel reinforcement, wait stretch-draw and die carrier walking, compound die, transfer the mould period to carry out the reinforcement after the case roof beam is pour, become parallel operation from the line production, reduce the nest worker phenomenon that waits for arousing, reach the purpose of accelerating the construction progress.
Claims (6)
1. The utility model provides a prefabricated ligature mould of cast-in-place box girder bottom web reinforcing bar segmentation section which characterized in that: the bottom plate bracket is formed by vertically and crossly welding a plurality of cross beams and longitudinal beams, the upper surface of the cross beam of the bottom plate bracket is also provided with a bottom plate reinforcing steel bar positioning groove, and the opening of the positioning groove is upward used for positioning a bottom plate reinforcing steel bar; the curb plate support is including locating a plurality of bracket components of bottom plate support left and right sides symmetry, the bracket component evenly sets up along longeron length direction, every bracket component all with crossbeam tip fixed connection, the quantity of bracket component is the same with crossbeam quantity, every bracket component including the vertical welding connect in the montant of crossbeam tip and with the fixed welded slope web in montant top, still be equipped with between montant and the web many with crossbeam parallel arrangement's horizontal pole, right angled triangle is constituteed in montant, web and horizontal pole cross-section.
2. The cast-in-place box girder bottom web reinforcing steel bar segmental prefabrication binding mould of claim 1, characterized in that: the upper portion of the outer side of the support component is further provided with a construction platform, the construction platform is fixedly connected with a vertical rod of the support component and is further provided with a guardrail, and the length of the construction platform is the same as that of a longitudinal beam of the bottom plate support.
3. The cast-in-place box girder bottom web reinforcing steel bar segmental prefabrication binding mould of claim 2, characterized in that: the upper surface of the web plate is also provided with angle irons which are uniformly distributed.
4. The cast-in-place box girder bottom web reinforcing steel bar segmental prefabrication binding mould of claim 3, characterized in that: the construction platform is 0.5m wide and is made of 5 pieces of phi 20 threaded steel with the distance of 12.5cm, the platform guardrail is 80cm high and is made of 2 pieces of phi 16 threaded steel with the distance of 40 cm.
5. The cast-in-place box girder bottom web reinforcing steel bar segmental prefabrication binding mould of claim 4, characterized in that: connect through the strengthening rib between a plurality of bracket components, strengthening rib length is the same with longeron length and with longeron parallel arrangement, the web is formed by down tube and vertical pole welding, vertical pole length is the same with longeron length and with longeron parallel arrangement.
6. The cast-in-place box girder bottom web reinforcing steel bar segmental prefabrication binding mould of claim 5, characterized in that: still be equipped with a plurality of support down tube between construction platform bottom and the montant, a plurality of support down tube evenly set up along longeron length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920699781.6U CN210288124U (en) | 2019-05-16 | 2019-05-16 | A cast-in-place box girder bottom web steel bar segment prefabricated binding tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920699781.6U CN210288124U (en) | 2019-05-16 | 2019-05-16 | A cast-in-place box girder bottom web steel bar segment prefabricated binding tire |
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| CN210288124U true CN210288124U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920699781.6U Expired - Fee Related CN210288124U (en) | 2019-05-16 | 2019-05-16 | A cast-in-place box girder bottom web steel bar segment prefabricated binding tire |
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| CN (1) | CN210288124U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158474A (en) * | 2019-05-16 | 2019-08-23 | 中交一公局厦门工程有限公司 | A prefabricated tying mold and tying method for the bottom web reinforcement of a cast-in-place box girder by segment |
| CN113774802A (en) * | 2021-09-17 | 2021-12-10 | 黑龙江省龙建路桥第五工程有限公司 | Cast-in-place box girder edge protection structure and construction method |
-
2019
- 2019-05-16 CN CN201920699781.6U patent/CN210288124U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158474A (en) * | 2019-05-16 | 2019-08-23 | 中交一公局厦门工程有限公司 | A prefabricated tying mold and tying method for the bottom web reinforcement of a cast-in-place box girder by segment |
| CN113774802A (en) * | 2021-09-17 | 2021-12-10 | 黑龙江省龙建路桥第五工程有限公司 | Cast-in-place box girder edge protection structure and construction method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |