CN111608083A - T-beam continuous end post-cast strip template installation system and construction method thereof - Google Patents
T-beam continuous end post-cast strip template installation system and construction method thereof Download PDFInfo
- Publication number
- CN111608083A CN111608083A CN202010436074.5A CN202010436074A CN111608083A CN 111608083 A CN111608083 A CN 111608083A CN 202010436074 A CN202010436074 A CN 202010436074A CN 111608083 A CN111608083 A CN 111608083A
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- Prior art keywords
- bottom die
- jack
- cast strip
- jacks
- supporting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
Abstract
The invention discloses a T-beam continuous end post-cast strip template mounting system and a construction method thereof, wherein the T-beam continuous end post-cast strip template mounting system comprises a bottom die supporting component connected to a post-cast strip on a pier, a bottom die connected above the bottom die supporting component, and T-beams and side dies connected to the periphery of the bottom die; the bottom die supporting assembly comprises a group of jacks connected to the pier, top plates connected to each jack, connecting pieces connected to the same row of jacks and supporting reinforcing pieces vertically connected to the connecting pieces and located above the same row of jacks. The bottom die is convenient to mount by arranging the jack, and the jack is small in size and convenient to mount and flexibly arrange; the telescopic rod is connected with the connecting plate, so that the stress area is increased and the supporting height is adjusted conveniently; through the setting of connecting piece and support reinforcement, do benefit to and form the connection wholeness to the jack that is arranged in line, do benefit to again when concreting, the effort passes through connecting piece and support reinforcement homodisperse to every jack.
Description
Technical Field
The invention belongs to the field of T-beam building construction, and particularly relates to a T-beam continuous end post-cast strip template mounting system and a construction method thereof.
Background
Bridge engineering is an important component of highways, wherein T-shaped continuous beams are widely applied in construction. And the post-cast strip at the continuous end of the T-shaped beam is a key construction process. In the construction of the existing post-cast strip, the space is small, the construction operation difficulty of workers is high, and particularly, the bottom die construction needs to consume large manpower and material resources. After the bottom die construction is finished, the bottom die is difficult to disassemble due to the self-weight action of concrete, so that the loss of construction quality and progress is caused.
Disclosure of Invention
The invention provides a T-beam continuous end post-cast strip template mounting system and a construction method thereof, which are used for solving the technical problems of convenient mounting, adaptability adjustment, cyclic utilization and the like of a template, particularly a bottom template, at a T-beam continuous end post-cast strip.
In order to achieve the purpose, the invention adopts the following technical scheme:
a template installation system for a post-cast strip at the continuous end of a T-shaped beam comprises a bottom die supporting assembly, a bottom die, a T-shaped beam and a side die, wherein the bottom die supporting assembly is connected to the post-cast strip on a pier;
the bottom die supporting assembly comprises a group of jacks connected to the pier, a top plate connected to each jack, connecting pieces connected to the same row of jacks and supporting reinforcing pieces vertically connected to the connecting pieces and located above the same row of jacks; and laying a bottom die on the top of the supporting and reinforcing member.
Furthermore, the jacks are uniformly distributed at intervals and at least four in the design installation range of the bottom die, and each jack comprises a lifting device and a telescopic rod connected to the lifting device; the top of the telescopic rod is connected with the top plate.
Furthermore, the lifting devices are oil hydraulic cylinders or hydraulic cylinders, and the adjacent lifting devices are connected in parallel; the base of the lifting device is detachably connected with the bridge pier.
Furthermore, the top of the telescopic rod is in threaded connection, sleeved connection or welded with a top plate.
Furthermore, the top plate is a square plate, and a threaded hole is formed in the top plate in advance corresponding to the threaded connection telescopic rod; or the telescopic rod is correspondingly sleeved and connected with the sleeve in advance on the bottom surface of the top plate.
Furthermore, the connecting piece is an I-shaped piece or an H-shaped piece, wing plates of the connecting piece are connected to the top of the same row of the jack, and the width of each wing plate is smaller than that of the top plate; the length of the connecting piece is greater than the width of the bottom die.
Furthermore, the supporting and reinforcing member is a batten or a steel square bar, and the length of the supporting and reinforcing member is not less than that of the bottom die; the top surface of the supporting and reinforcing part is horizontally arranged
Further, the bottom die is a bamboo plywood, and a release agent is coated on the top surface of the bamboo plywood; the bottom die is in compression joint with the bottom surface of the T-shaped beam.
Further, the construction method of the T-beam continuous end post-cast strip formwork installation system comprises the following specific steps:
step one, selecting a jack and determining an installation position according to the weight of concrete to be poured at a post-cast strip to be poured; reserving a post-cast strip notch at the continuous end of the T-shaped beam, and manufacturing a bottom die; wherein the size of the bottom die is larger than that of the gap, and a release agent is uniformly coated before installation;
determining the stroke of a telescopic rod in the jack according to the height from the designed bottom die mounting position to the top surface of the pier; when the connecting piece and the supporting reinforcing piece are selected, the bearing strength of the connecting piece and the supporting reinforcing piece is verified to be larger than the weight to be borne by the upper part;
thirdly, installing jacks on the top surface of the pier, wherein the short direction is a row and the long direction is a column, each row is ensured to be distributed along a straight line, the bottom of each jack is connected with the top surface of the pier through a bolt, and the top ends of the jacks are connected with a top plate in advance;
fourthly, adjusting the height of a telescopic rod in the jack, and enabling the top plate to be at the same designed elevation; wherein, each jack is connected in parallel, the lifting is controlled by uniform oil pressure or hydraulic pressure, and the jack can be set independently when local adjustment or single adjustment is needed;
after the composite requirement of the installation position of the top plate is detected, the connecting pieces are installed on the connecting plates and located at the positions where the jacks are arranged in rows, the supporting and reinforcing pieces are installed on the connecting pieces and located at the positions where the jacks are arranged in rows, the elevation of the top of the supporting and reinforcing pieces is detected again, and the bottom die is installed after the adjusting value meets the requirement;
after the bottom die is installed, the top surface of the bottom die is in compression joint with the bottom surface of the T-shaped beam at the notch by lifting a telescopic rod in a jack; and (3) mounting side molds at the notches of the T-shaped beams, connecting the side molds through split bolts, pouring concrete, lowering a telescopic rod in the jack after the concrete is cured, and dismantling and recycling the bottom mold.
Furthermore, the jack can be designed to be a hand-operated type, and the height of the top plate connected with the jack can be controlled one by one to meet the design and installation requirements.
The invention has the beneficial effects that:
1) the bottom die is convenient to mount in a narrow space by arranging the jack, and the jack is small in size and convenient to mount and flexibly arrange; the telescopic rod is connected with the connecting plate, so that the stress area is increased and the supporting height is adjusted conveniently;
2) according to the invention, through the arrangement of the connecting piece and the supporting and reinforcing piece, on one hand, the connection integrity of the jacks arranged in rows and columns is favorably formed, and on the other hand, the acting force is favorably and uniformly dispersed to each jack through the connecting piece and the supporting and reinforcing piece when the concrete is poured at the upper part;
3) the jack is arranged in parallel and can be independently adjusted, so that the lifting device is convenient for the same lifting and lowering, and is also convenient for the height adjustment and adaptation of single or local parts, and the individualized adjustment can be carried out according to the connection design requirements of different bottom moulds and templates in the construction;
the connecting nodes of the mounting system are detachably connected, so that the mounting, adjustment and disassembly during construction are convenient, and the used components and equipment are all easily obtained on the construction site, so that the mounting system is suitable for construction at post-cast strips with small space and inconvenient operation of personnel, and can greatly save the construction time and cost; additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic view of a construction process of a bottom formwork installation system of a post-cast strip at a continuous end of a T-shaped beam;
FIG. 2 is a schematic view of the bottom mold and bottom mold support assembly connection;
FIG. 3 is a schematic view of the bottom mold and bottom mold support assembly being connected and disassembled
Fig. 4 is a schematic view of the top plate and jack connection.
Reference numerals: 1-bridge column, 2-bridge pier, 3-T beam, 4-bottom die supporting component, 41-jack, 411-lifting device, 412-telescopic rod, 42-top plate, 43-connecting piece, 44-supporting reinforcing piece and 5-bottom die.
Detailed Description
Taking the pouring of the post-cast strip at the continuous end of a certain T-shaped beam as an example, wherein the post-cast strip to be poured is positioned above the pier 2, and the bridge columns 1 are connected below the two ends of the pier 2. And reserving joint reinforcing steel bars at the positions of the gaps to be cast of the post-cast strip, and installing the template after binding according to the design requirements of the reinforcing steel bars in the post-cast strip. The mounting system of the template during the pouring of the post-pouring strip comprises a bottom die supporting component 4 connected to the post-pouring strip on the pier 2, a bottom die 5 connected above the bottom die supporting component 4, and T-shaped beams 3 and side dies connected to the periphery of the bottom die 5; as shown in FIG. 1, a schematic view of installing and connecting a bottom die 5 at a position where a post-cast strip is reserved for a certain T-shaped beam 3.
As shown in fig. 2 and 3, the bottom die supporting assembly 4 comprises a set of jacks 41 connected to the pier 2, a top plate 42 connected to each jack 41, a connecting member 43 connected to the same row of jacks 41, and a supporting reinforcement 44 vertically connected to the connecting member 43 and located above the same row of jacks 41; the supporting reinforcement 44 is laid on top of the bottom mould 5.
In this embodiment, six jacks 41 are uniformly distributed and arranged at intervals within the designed installation range of the bottom die 5, and each jack 41 includes a lifting device 411 and an expansion rod 412 connected to the lifting device 411; the top of the telescoping rod 412 is connected to the top plate 42. The lifting devices 411 are oil hydraulic cylinders or hydraulic cylinders, and the adjacent lifting devices 411 are connected in parallel; the base of the lifting device 411 is bolted to the pier 2. When the number of the installed jacks 41 is small or the upper part bears small, the hand-operated jacks 41 can also be adopted.
In the present invention, the connecting member 43 is made of a steel section, and is an i-shaped member or an H-shaped member. The wing plates of the connecting piece 43 are connected to the top of the same row of the jack 41, and the width of the wing plates is smaller than that of the top plate 42; the length of the connecting piece 43 is greater than the width of the bottom mold 5.
In the invention, the supporting and reinforcing member 44 is a batten or a steel square bar, the length and width of the side surface is 100mm multiplied by 100mm, and the length of the supporting and reinforcing member 44 is not less than the length of the bottom die 5; the bottom die 5 is horizontally arranged on the top surface of the supporting and reinforcing member 44 and is a bamboo plywood, and a release agent is coated on the top surface of the bamboo plywood; the bottom die 5 is in pressure joint with the bottom surface of the T-shaped beam 3.
As shown in fig. 3, the top of the telescopic rod 412 in the jack 41 is screwed, sleeved or welded with the top plate 42. Wherein, the top plate 42 is a square steel plate with a length and width of 100mm × 100mm and a thickness of 5 mm. When the telescopic rod 412 is correspondingly connected with the thread, a thread hole is arranged on the top plate 42 in advance; or when the telescopic rod 412 is correspondingly sleeved, the sleeve is connected to the bottom surface of the top plate 42 in advance. The strength of the joint is verified to meet the bearing requirement no matter in threaded connection, sleeving connection or welding.
With reference to fig. 1 to 4, a construction method of a T-beam continuous end post-cast strip formwork installation system is further described, which specifically includes the following steps:
step one, selecting a jack 41 and determining an installation position according to the weight of concrete to be poured at a post-cast strip to be poured; reserving a post-cast strip gap at the continuous end of the T-shaped beam, and manufacturing a bottom die 5; wherein the size of the bottom die 5 is larger than that of the gap, and a release agent is uniformly coated before installation;
secondly, determining the stroke of the telescopic rod 412 in the jack 41 according to the height from the installation position of the bottom die 5 to the top surface position of the pier 2; and when the connecting member 43 and the support reinforcing member 44 are selected, it is verified that the load bearing strength is greater than the weight to be borne by the upper portion.
And step three, installing jacks 41 on the top surface of the pier 2, wherein the short direction is a row and the long direction is a column, each row is ensured to be distributed along a straight line, the bottom of each jack 41 is connected with the top surface of the pier 2 through a bolt, and the top end of each jack 41 is connected with a top plate 42 in advance.
Step four, adjusting the height of the telescopic rod 412 in the jack 41, and enabling the top plate 42 to be at the same designed elevation; wherein, the jacks 41 are connected in parallel, the lifting is controlled by uniform oil pressure or hydraulic pressure, and the lifting can be set independently when local adjustment or single adjustment is needed; when the number of the jacks 41 is small or the upper part of the jacks bears small, the jacks are controlled by hand-operated mode, and the jacks are adjusted one by constructors until the top plates 42 are at the same designed elevation.
And step five, after the composite requirements of the installation positions of the top plates 42 are detected, the connecting pieces 43 are installed on the connecting plates and located at the row arrangement positions of the jacks 41, the supporting and reinforcing pieces 44 are installed on the connecting pieces 43 and located at the row arrangement positions of the jacks 41, the top elevations of the supporting and reinforcing pieces 44 are detected again, and the bottom die 5 is installed after the adjusting values meet the requirements.
Sixthly, after the bottom die 5 is installed, the top surface of the bottom die 5 is pressed and connected with the bottom surface of the T-shaped beam 3 at the notch by lifting the telescopic rod 412 in the jack 41; and (3) mounting side molds at the notches of the T-shaped beams 3, connecting the side molds through split bolts, pouring concrete, lowering the telescopic rods 412 in the jacks 41 after the concrete is cured, and then dismantling and recycling the bottom mold 5.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (10)
1. A template installation system for a post-cast strip at the continuous end of a T-shaped beam is characterized by comprising a bottom die supporting component (4) connected to a post-cast strip on a pier (2), a bottom die (5) connected above the bottom die supporting component (4), and T-shaped beams (3) and side dies connected to the periphery of the bottom die (5);
the bottom die supporting assembly (4) comprises a group of jacks (41) connected to the pier (2), a top plate (42) connected to each jack (41), connecting pieces (43) connected to the same row of jacks (41), and supporting reinforcing pieces (44) vertically connected to the connecting pieces (43) and positioned above the same row of jacks (41); laying a bottom mould (5) on top of the supporting and reinforcing members (44).
2. The T-beam continuous end post-cast strip formwork installation system is characterized in that at least four jacks (41) are uniformly distributed at intervals in the design installation range of the bottom formwork (5), and each jack (41) comprises a lifting device (411) and an expansion rod (412) connected to the lifting device (411); the top of the telescopic rod (412) is connected with the top plate (42).
3. The T-beam continuous end post-cast strip formwork mounting system as claimed in claim 2, characterized in that the lifting devices (411) are oil hydraulic cylinders or hydraulic cylinders, and adjacent lifting devices (411) are connected in parallel; the base of the lifting device (411) is detachably connected with the pier (2).
4. A T-beam continuous end post-cast strip formwork mounting system as claimed in claim 3, wherein the top of the telescoping rod (412) is threaded, sleeved or welded with the top plate (42).
5. The T-beam continuous end post-cast strip formwork mounting system as claimed in claim 4, characterized in that the top plate (42) is a square plate, and the corresponding screw connection telescopic rod (412) is provided with a threaded hole on the top plate (42) in advance; or the telescopic rod (412) is correspondingly sleeved and connected with the sleeve in advance on the bottom surface of the top plate (42).
6. A T-beam continuous end post-cast strip formwork mounting system as claimed in claim 1, wherein the connecting member (43) is a i-shaped member or an H-shaped member, the wing plates of the connecting member (43) are connected to the top of the same row of the jack (41), the width of the wing plates is smaller than the width of the top plate (42); the length of the connecting piece (43) is larger than the width of the bottom die (5).
7. The T-beam continuous end post-cast strip formwork mounting system as claimed in claim 1, wherein the supporting reinforcement (44) is a batten or a steel square bar, and the length of the supporting reinforcement (44) is not less than the length of the bottom die (5); the top surface of the supporting and reinforcing member (44) is horizontally arranged.
8. The T-beam continuous end post-cast strip formwork mounting system as claimed in claim 1, wherein the bottom formwork (5) is a bamboo plywood, and a release agent is coated on the top surface of the bamboo plywood; the bottom die (5) is in compression joint with the bottom surface of the T-shaped beam (3).
9. A construction method applying the T-beam continuous end post-cast strip formwork installation system as claimed in any one of claims 1 to 8 is characterized by comprising the following specific steps:
step one, selecting a jack (41) and determining an installation position according to the weight of concrete to be poured at a post-cast strip to be poured; reserving a post-pouring strip notch at the continuous end of the T-shaped beam, and manufacturing a bottom die (5); wherein the size of the bottom die (5) is larger than that of the gap, and a release agent is uniformly coated before installation;
secondly, determining the stroke of a telescopic rod (412) in the jack (41) according to the height from the installation position of the bottom die (5) to the top surface position of the pier (2); when the connecting piece (43) and the supporting reinforcing piece (44) are selected, the bearing strength is proved to be larger than the weight to be borne by the upper part;
thirdly, installing jacks (41) on the top surface of the pier (2), wherein the short direction is a row and the long direction is a column, each row is ensured to be distributed along a straight line, the bottom of each jack (41) is connected with the top surface of the pier (2) through a bolt, and the top end of each jack (41) is connected with a top plate (42) in advance;
fourthly, adjusting the height of a telescopic rod (412) in the jack (41) to enable the top plate (42) to be at the same designed elevation; wherein, the jacks (41) are connected in parallel, the lifting is controlled by uniform oil pressure or hydraulic pressure, and the jacks can be independently set when local adjustment or single adjustment is needed;
step five, after the composite requirements of the installation positions of the top plates (42) are detected, connecting pieces (43) are installed on the connecting plates and located at the positions where the jacks (41) are arranged in rows, supporting reinforcing pieces (44) are installed on the connecting pieces (43) and located at the positions where the jacks (41) are arranged in rows, the top elevations of the supporting reinforcing pieces (44) are detected again, and the bottom die (5) is installed after the adjusting values meet the requirements;
sixthly, after the bottom die (5) is installed, the top surface of the bottom die (5) is pressed and connected with the bottom surface of the T-shaped beam (3) at the gap through the lifting of a telescopic rod (412) in the jack (41); installing side molds at the notches of the T-shaped beams (3), connecting the side molds through tie bolts, then pouring concrete, lowering the telescopic rods (412) in the jacks (41) after the concrete is cured, and then dismantling and recycling the bottom mold (5).
10. The construction method of the T-beam continuous end post-cast strip formwork installation system as claimed in claim 9, characterized in that the jack (41) can be designed to be hand-operated, and the height of the top plate (42) connected thereto is controlled one by one to meet the design installation requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436074.5A CN111608083A (en) | 2020-05-21 | 2020-05-21 | T-beam continuous end post-cast strip template installation system and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436074.5A CN111608083A (en) | 2020-05-21 | 2020-05-21 | T-beam continuous end post-cast strip template installation system and construction method thereof |
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| CN111608083A true CN111608083A (en) | 2020-09-01 |
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| CN202010436074.5A Pending CN111608083A (en) | 2020-05-21 | 2020-05-21 | T-beam continuous end post-cast strip template installation system and construction method thereof |
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| JP5172519B2 (en) * | 2008-07-23 | 2013-03-27 | ダイチメンテナンス株式会社 | Support for formwork retention |
| CN103510721A (en) * | 2012-06-26 | 2014-01-15 | 徐州康腾传动科技发展有限公司 | Novel lifting and jacking structure |
| CN105803946A (en) * | 2016-05-12 | 2016-07-27 | 中铁十局集团第二工程有限公司 | Quickly adjustable bracket for cap beam and construction method of quickly adjustable bracket for cap beam |
| CN205857696U (en) * | 2016-06-01 | 2017-01-04 | 成都建筑工程集团总公司 | A kind of adjustable steel beam support means and system |
| CN107227843A (en) * | 2017-07-28 | 2017-10-03 | 北京城建七建设工程有限公司 | A kind of alter-pouring strips mould plate support system and construction method |
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2020
- 2020-05-21 CN CN202010436074.5A patent/CN111608083A/en active Pending
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| JP5172519B2 (en) * | 2008-07-23 | 2013-03-27 | ダイチメンテナンス株式会社 | Support for formwork retention |
| CN103510721A (en) * | 2012-06-26 | 2014-01-15 | 徐州康腾传动科技发展有限公司 | Novel lifting and jacking structure |
| CN105803946A (en) * | 2016-05-12 | 2016-07-27 | 中铁十局集团第二工程有限公司 | Quickly adjustable bracket for cap beam and construction method of quickly adjustable bracket for cap beam |
| CN205857696U (en) * | 2016-06-01 | 2017-01-04 | 成都建筑工程集团总公司 | A kind of adjustable steel beam support means and system |
| CN107227843A (en) * | 2017-07-28 | 2017-10-03 | 北京城建七建设工程有限公司 | A kind of alter-pouring strips mould plate support system and construction method |
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