CN114016617A - Jacking in-place conversion construction method for large-span prestressed double-T plate - Google Patents
Jacking in-place conversion construction method for large-span prestressed double-T plate Download PDFInfo
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- CN114016617A CN114016617A CN202110797206.1A CN202110797206A CN114016617A CN 114016617 A CN114016617 A CN 114016617A CN 202110797206 A CN202110797206 A CN 202110797206A CN 114016617 A CN114016617 A CN 114016617A
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- plate
- jacking
- span prestressed
- structural beam
- prestressed double
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3522—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by raising a structure and then adding structural elements under it
- E04B1/3527—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by raising a structure and then adding structural elements under it the structure being a roof
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- Architecture (AREA)
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- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a jacking, positioning and converting construction method of a large-span prestressed double-T plate, which comprises the following steps of: lifting the large-span prestressed double-T plate to the upper side of a structural beam to be fixed; placing the large-span prestressed double-T plate on four sliding assemblies, wherein the sliding assemblies are symmetrically arranged on a track at the top of the structural beam; the large-span prestressed double-T plate moves to a specified position along the length direction of the structural beam through the sliding assembly under the traction of a winch; the large-span prestressed double-T plate is jacked up from the bottom surface of the jacking assembly arranged on the side surface of the structural beam by a jack of the jacking assembly, so that the large-span prestressed double-T plate is separated from the sliding assembly; cutting a track section corresponding to the jacking assembly and removing a sliding assembly on the upper part of the track section; and (3) lowering the large-span prestressed double-T plate to the top surface of the structural beam through a jack of the jacking assembly, dismantling the jacking assembly, and welding the large-span prestressed double-T plate to the embedded plate at the top of the structural beam.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and relates to a jacking, positioning and converting construction method for a large-span prestressed double-T plate.
Background
In the building engineering, the concrete double-T plate is widely applied to large-span building roofs of factory buildings, warehouses, garages, cold storages, various halls and the like. Under some working conditions, the span of the double T-shaped plate is large, so that a lot of inconvenience is brought to transportation and installation, and the safety of operation is influenced to a certain extent; meanwhile, the bearing capacity of the double-T plate web plate position is small, how to select a device for transportation and installation is guaranteed, the safety is guaranteed, the operation efficiency is improved, and the technical problem to be solved by technical personnel in the field is solved urgently.
Therefore, a jacking, positioning and converting construction method for a large-span prestressed double-T plate is needed to be designed to solve the technical problems in the prior art.
Disclosure of Invention
The invention aims to solve at least part of technical problems in the prior art to a certain extent, and provides a jacking, positioning and converting construction method for a large-span prestressed double-T plate, which has a reasonable structure and solves the problems of large span and small bearing capacity of the double-T plate.
In order to solve the technical problem, the invention provides a construction method for jacking, positioning and converting a large-span prestressed double-T plate, which comprises the following steps:
s1, lifting the large-span prestressed double-T plate to the upper side of the structural beam to be fixed;
s2, placing the large-span prestressed double-T plates on four sliding assemblies, wherein the sliding assemblies are symmetrically arranged on a track at the top of the structural beam;
s3, the large-span prestressed double-T plate moves to a specified position along the length direction of the structural beam through the sliding component under the traction of a winch;
s4, jacking the large-span prestressed double-T plate from the bottom surface of the large-span prestressed double-T plate by a jack of a jacking assembly arranged on the side surface of the structural beam, so that the large-span prestressed double-T plate is separated from the sliding assembly;
s5, cutting the rail section corresponding to the jacking assembly and removing the sliding assembly on the upper part of the rail section;
and S6, lowering the large-span prestressed double-T plate to the top surface of the structural beam through a jack of the jacking assembly, dismantling the jacking assembly, and welding the large-span prestressed double-T plate to the embedded plate at the top of the structural beam.
As a preferred embodiment, in step S2, the horizontal position of the long-span prestressed double T-shaped plate is adjusted by the windlasses disposed at both sides of the long-span prestressed double T-shaped plate, and the horizontal position deviation of both sides of the long-span prestressed double T-shaped plate is not more than 50 mm.
As a preferred embodiment, the jacking assembly further comprises a supporting portion, the supporting portion is arranged in the structural beam in pairs, the supporting portion comprises a vertical supporting plate, a back support, a horizontal plate, a pull rod and a flat plate, the vertical supporting plate and the back support are respectively arranged on the inner side and the outer side of the structural beam, the horizontal plate is vertically arranged between the vertical supporting plate and the back support, the pull rod penetrates through the vertical supporting plate, the structural beam and the back support to be fixed, and the flat plate is perpendicular to the vertical supporting plate.
As a preferred embodiment, the jacking assembly further comprises a channel steel and a sleeper, the channel steel and the sleeper are sequentially stacked on the platform plate of the supporting portion, and the jack is located on the sleeper.
As a preferred embodiment, the winch is provided with a variable frequency controller, and the moving speed of the large-span prestressed double-T plate is adjusted through the variable frequency controller.
In a preferred embodiment, the position of the rib beam of the large-span prestressed double-T plate is matched with that of a jack of the jacking assembly, and the jack acts on the bottom surface of the rib beam.
As a preferred embodiment, the pre-embedded plates are arranged at intervals along the length direction of the structural beam, and the large-span prestressed double-T plate and the pre-embedded plates are fixed by full welding.
As a preferred embodiment, the embedded plate is a rectangular plate, which is embedded in the structural beam.
As a preferred embodiment, the spacing distance between adjacent embedded plates is 1200-2000 mm.
As a preferred embodiment, the support portions arranged in pairs are arranged along the length direction of the structural beam, and the distance between adjacent support portions is not more than 300 mm.
The invention has the beneficial effects that:
the jacking, positioning and converting construction method for the large-span prestressed double-T plate provided by the invention is reasonable in structure, solves the problems of large span and small bearing capacity of the double-T plate, adopts the jacking, positioning and converting method, safely and efficiently completes the installation and fixation of the large-span prestressed double-T plate, and has good popularization value.
Drawings
The above advantages of the present invention will become more apparent and more readily appreciated from the detailed description set forth below when taken in conjunction with the drawings, which are intended to be illustrative, not limiting, of the invention and in which:
FIG. 1 is a flow chart of a construction method for jacking, positioning and converting a large-span prestressed double-T plate according to the invention;
FIG. 2 is a schematic view of the large span prestressed double T-slab of the present invention slipping on a structural beam;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a partial top view of the corresponding embodiment of FIG. 2;
FIG. 5 is a schematic view of the jacking assembly of the present invention applied to a large span prestressed double T panel;
FIG. 6 is a top view of the corresponding support portion of FIG. 5;
fig. 7 is a schematic diagram of a rail section corresponding to the jacking assembly of the present invention after cutting.
In the drawings, the reference numerals denote the following components:
10. a large-span prestressed double-T plate; 20. a structural beam; 21. pre-burying a plate; 30. a slipping component; 40. a winch; 50. a jacking assembly; 51. a jack; 52. a support portion; 52a, a vertical supporting plate; back support 52 b; 52c, a horizontal plate; 52d, a pull rod; 52e. a platform plate; 53. channel steel; 54. and (7) sleeper.
Detailed Description
Fig. 1 to 7 are related schematic diagrams of a jacking-up in-place conversion construction method of a large-span prestressed double-T slab according to the present application, and the present invention is described in detail below with reference to specific embodiments and accompanying drawings.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.
The invention relates to a flow chart of a jacking, positioning and converting construction method of a large-span prestressed double-T plate, which is shown in figure 1. The construction method for jacking, positioning and converting the large-span prestressed double-T plate comprises the following steps:
s1, lifting the long-span prestressed double T-slabs 10 to the upper side of the structural beam 20 to be fixed, as shown in fig. 4;
s2, placing the large-span prestressed double-T plate 10 on four slippage assemblies 30 shown in the figure 3, wherein the slippage assemblies 30 are symmetrically arranged on a track at the top of the structural beam 20;
s3, the large-span prestressed double-T plate 10 is pulled by a winch 40 to move to a specified position along the length direction of the structural beam 20 through the sliding assembly 30;
s4, the large-span prestressed double T-plate 10 is jacked up from the bottom surface thereof by the jack 51 shown in fig. 5 of the jacking assembly 50 provided at the side of the structural beam 20, so that the large-span prestressed double T-plate 10 is separated from the slip assembly 30;
s5, cutting the track section corresponding to the jacking assembly 50 and removing the sliding assembly 30 at the upper part of the track section, as shown in FIG. 7; after the track section is cut, welding slag and gravel slag of embedded parts on the upper portion of the structural beam 20 need to be cleaned.
And S6, lowering the large-span prestressed double-T plate 10 to the top surface of the structural beam 20 through the jack 51 of the jacking assembly 50, dismantling the jacking assembly 50, and welding the large-span prestressed double-T plate 10 to the embedded plate 21 on the top of the structural beam 20.
In step S2, the horizontal position of the long-span prestressed double T-shaped plate 10 is adjusted by the windlasses 40 disposed at both sides of the long-span prestressed double T-shaped plate 10, as shown in fig. 2, the horizontal position deviation of both sides of the long-span prestressed double T-shaped plate 10 is not more than 50 mm. Specifically, the winch 40 is connected with the large-span prestressed double-T plate 10 through a steel wire rope and a pulley; the hoist 40 is provided with a variable frequency controller, which adjusts the moving speed of the large-span prestressed double T-plate 10 through the variable frequency controller. The distance between the adjacent structural beams is relatively long as shown in fig. 2, and the double-T plate with the span of 32m needs to be installed in the invention. Because the bearing capacity of the double-T plate web plate position is small, the double-T plate web plate can not be jacked in place, and a novel construction method is adopted, so that the problem of small bearing capacity of the double-T plate web plate is solved.
As an embodiment of the present invention, the jacking assembly 50 further includes a supporting portion 52, as shown in fig. 7, the supporting portion 52 is disposed on the structural beam 20 in pairs, the supporting portion 52 includes a vertical supporting plate 52a, a back support 52b, a horizontal plate 52c, a pull rod 52d and a platform plate 52e, as shown in fig. 5, the vertical supporting plate 52a and the back support 52b are disposed on the inner side and the outer side of the structural beam 20, respectively, the horizontal plate 52c is vertically disposed between the vertical supporting plate 52a and the back support 52b, the pull rod 52d is fixed through the vertical supporting plate 52a, the structural beam 20 and the back support 52b, and the platform plate 52e is disposed perpendicular to the vertical supporting plate 52a.
Further, the jacking assembly 50 further includes a channel 53 and a sleeper 54, as shown in fig. 5, the channel 53 and the sleeper 54 are sequentially stacked on a platform plate 52e of the support portion 52, and the jack 51 is located on the sleeper 54.
In the invention, the vertical supporting plate 52a and the back support 52b are similar in appearance structure and are both made of Q235 steel plates with the thickness of at least 20 mm. The vertical supporting plate 52a and the back support 52b are provided with protruding plates for connecting the horizontal plate 52c and the pull rod 52d.
Further, the support parts 52 arranged in pairs are arranged along the length direction of the structural beam 20, as shown in fig. 6, and the distance between adjacent support parts 52 is not more than 300mm, so as to ensure that the support parts 52 have a sufficient span and ensure the reliability of the jack 51 arranged thereon.
Specifically, the protruding plates of the vertical supporting plates 52a are oppositely arranged, so that the supporting portions 52 are relatively far apart from the corresponding pull rods 52d, thereby ensuring the rigidity of the supporting portions 52 as a whole.
In order to ensure the jacking force of the jack 51 on the large-span prestressed double-T plate 10 and prevent the large-span prestressed double-T plate 10 from being deviated due to improper jacking positions, the rib beam of the large-span prestressed double-T plate 10 is matched with the jack 51 of the jacking assembly 50 in position, and the jack 51 acts on the bottom surface of the rib beam.
In the present invention, the embedded plates 21 are arranged at intervals along the length direction of the structural beam 20, and as shown in fig. 4, the large-span prestressed double T-shaped plate 10 and the embedded plates 21 are fixed by full welding.
As an aspect of the present embodiment, the embedded plate 21 is a rectangular plate, and is embedded in the structural beam 20. The spacing distance between adjacent embedded plates 21 is 1200 mm and 2000 mm.
Compared with the defects and shortcomings of the prior art, the jacking in-place conversion construction method for the large-span prestressed double-T plate provided by the invention is reasonable in structure, solves the problems of large span and small bearing capacity of the double-T plate, safely and efficiently completes the installation and fixation of the large-span prestressed double-T plate by adopting the jacking in-place conversion method, and has good popularization value.
The present invention is not limited to the above embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which are the same as or similar to the technical solutions of the present invention, fall within the protection scope of the present invention.
Claims (10)
1. A jacking, positioning and converting construction method for a large-span prestressed double-T plate is characterized by comprising the following steps:
s1, lifting the large-span prestressed double-T plate to the upper side of the structural beam to be fixed;
s2, placing the large-span prestressed double-T plates on four sliding assemblies, wherein the sliding assemblies are symmetrically arranged on a track at the top of the structural beam;
s3, the large-span prestressed double-T plate moves to a specified position along the length direction of the structural beam through the sliding component under the traction of a winch;
s4, jacking the large-span prestressed double-T plate from the bottom surface of the large-span prestressed double-T plate by a jack of a jacking assembly arranged on the side surface of the structural beam, so that the large-span prestressed double-T plate is separated from the sliding assembly;
s5, cutting the rail section corresponding to the jacking assembly and removing the sliding assembly on the upper part of the rail section;
and S6, lowering the large-span prestressed double-T plate to the top surface of the structural beam through a jack of the jacking assembly, dismantling the jacking assembly, and welding the large-span prestressed double-T plate to the embedded plate at the top of the structural beam.
2. The jacking-in-place conversion construction method according to claim 1, wherein in step S2, the horizontal position of the long-span prestressed double-T slab is adjusted by winches disposed at both sides of the long-span prestressed double-T slab, and the horizontal position deviation at both sides of the long-span prestressed double-T slab is not more than 50 mm.
3. The construction method for jacking, in-place converting according to claim 1, wherein the jacking assembly further comprises supporting parts, the supporting parts are arranged on the structural beam in pairs, the supporting parts comprise vertical supporting plates, back supports, horizontal plates, pull rods and platform plates, the vertical supporting plates and the back supports are respectively arranged on the inner side and the outer side of the structural beam, the horizontal plates are vertically arranged between the vertical supporting plates and the back supports, the pull rods penetrate through the vertical supporting plates, the structural beam and the back supports to be fixed, and the platform plates are arranged perpendicular to the vertical supporting plates.
4. The construction method for jacking, in-place conversion according to claim 3, wherein the jacking assembly further comprises channel steel and sleepers, the channel steel and the sleepers are sequentially stacked on the platform plates of the supporting parts, and the jacks are located on the sleepers.
5. The construction method of jacking to place conversion as claimed in claim 2, wherein the hoist is equipped with a variable frequency controller, and the moving speed of the long-span prestressed double-T plate is adjusted by the variable frequency controller.
6. The jacking-in-place conversion construction method according to claim 1, wherein the position of the rib beam of the large-span prestressed double-T plate is matched with that of a jack of the jacking assembly, and the jack acts on the bottom surface of the rib beam.
7. The construction method for jacking, in-place conversion according to claim 1, wherein the embedded plates are arranged at intervals along the length direction of the structural beam, and the large-span prestressed double-T plate and the embedded plates are fixed in a full-welding manner.
8. The construction method for jacking to place conversion according to claim 7, wherein the pre-buried plate is a rectangular plate pre-buried in the structural beam.
9. The construction method for jacking to place conversion as claimed in claim 8, wherein the distance between adjacent panels is 1200 mm and 2000 mm.
10. The jacking-in-place conversion construction method according to claim 3, wherein the support parts arranged in pairs are arranged along the length direction of the structural beam, and the distance between adjacent support parts is not more than 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110797206.1A CN114016617A (en) | 2021-07-14 | 2021-07-14 | Jacking in-place conversion construction method for large-span prestressed double-T plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110797206.1A CN114016617A (en) | 2021-07-14 | 2021-07-14 | Jacking in-place conversion construction method for large-span prestressed double-T plate |
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| CN114016617A true CN114016617A (en) | 2022-02-08 |
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| CN202110797206.1A Pending CN114016617A (en) | 2021-07-14 | 2021-07-14 | Jacking in-place conversion construction method for large-span prestressed double-T plate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003221875A (en) * | 2002-01-30 | 2003-08-08 | Kajima Corp | Rail-less slide method |
| CN205025072U (en) * | 2015-09-22 | 2016-02-10 | 广西建工集团第三建筑工程有限责任公司 | A construction platform device for high altitude construction |
| CN206971727U (en) * | 2017-06-05 | 2018-02-06 | 中国建筑第八工程局有限公司 | The bearing platform of post mould diagonal brace |
| CN210561784U (en) * | 2019-08-12 | 2020-05-19 | 上海城建道桥工程有限公司 | Plate girder bridge jacking auxiliary steel member |
| CN212153123U (en) * | 2020-03-23 | 2020-12-15 | 中交四公局第三工程有限公司 | Sideslip device is used in construction of T roof beam |
| CN215594999U (en) * | 2021-07-02 | 2022-01-21 | 中国建筑第二工程局有限公司 | Sliding device of large-span double-T plate |
-
2021
- 2021-07-14 CN CN202110797206.1A patent/CN114016617A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003221875A (en) * | 2002-01-30 | 2003-08-08 | Kajima Corp | Rail-less slide method |
| CN205025072U (en) * | 2015-09-22 | 2016-02-10 | 广西建工集团第三建筑工程有限责任公司 | A construction platform device for high altitude construction |
| CN206971727U (en) * | 2017-06-05 | 2018-02-06 | 中国建筑第八工程局有限公司 | The bearing platform of post mould diagonal brace |
| CN210561784U (en) * | 2019-08-12 | 2020-05-19 | 上海城建道桥工程有限公司 | Plate girder bridge jacking auxiliary steel member |
| CN212153123U (en) * | 2020-03-23 | 2020-12-15 | 中交四公局第三工程有限公司 | Sideslip device is used in construction of T roof beam |
| CN215594999U (en) * | 2021-07-02 | 2022-01-21 | 中国建筑第二工程局有限公司 | Sliding device of large-span double-T plate |
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Application publication date: 20220208 |
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