CN114856208A - Construction method for installing ultralimit prestressed beam and pipeline based on positioning support - Google Patents
Construction method for installing ultralimit prestressed beam and pipeline based on positioning support Download PDFInfo
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- CN114856208A CN114856208A CN202210593445.XA CN202210593445A CN114856208A CN 114856208 A CN114856208 A CN 114856208A CN 202210593445 A CN202210593445 A CN 202210593445A CN 114856208 A CN114856208 A CN 114856208A
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- supporting
- prestressed
- pipeline
- positioning
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention provides a construction method for installing overrun prestressed beam steel bars and pipelines based on a positioning support, which comprises the steps of manufacturing the positioning support, erecting a beam bottom formwork, paying off and positioning, installing the positioning support, binding the steel bars, dismantling the positioning support and the like. The positioning frame manufactured by the method can be rotated and adjusted, can be well adapted to beams with different sections in the construction process, increases the applicability through various adjustable devices, realizes the rotatable function through a self-disassembling system, reduces the construction cost and increases the construction efficiency.
Description
Technical Field
The invention relates to the technical field of installation of prestressed beam steel bars and pipelines, in particular to a construction method for installing ultralimit prestressed beam steel bars and pipelines based on a positioning support.
Background
In the process of building engineering and infrastructure, the large-span large-section transfinite prestressed beam or the common beam generally adopts angle steel, steel pipes or large-diameter steel bar welding supports to position and support the steel bars because of more, denser and heavier beam steel bars, has higher manufacturing labor cost, cannot be adjusted, has poorer applicability and cannot be rotated, and has more complicated construction process and certain influence on the construction progress.
Disclosure of Invention
Aiming at the prior art, the invention provides a construction method for installing an overrun prestressed beam steel bar and a pipeline based on a positioning bracket.
The invention provides a construction method for installing ultralimit prestressed beam steel bars and pipelines based on a positioning support, which comprises the following steps of:
s1, manufacturing a positioning bracket: a fixed height adjusting device is arranged on one side of the base, and a detachable height adjusting device is arranged on the other side of the base; the two height adjusting devices are respectively provided with a main rib supporting component, a waist rib supporting component and a pipeline supporting component, and the heights of the waist rib supporting component and the pipeline supporting component are adjustable;
s2, supporting a beam bottom template: erecting a beam bottom template according to a design drawing;
s3, positioning the wire releasing: paying off and positioning the prestressed beam and the pipeline according to a design drawing;
s4, mounting a positioning bracket: placing a positioning bracket on the beam bottom template, calculating the heights of the waist rib and the prestressed pipeline after positioning is finished, and adjusting the waist rib supporting assembly and the pipeline supporting assembly to corresponding positions;
s5, binding steel bars: binding a main reinforcement, a waist reinforcement and a prestressed pipeline of the prestressed beam according to a design drawing, binding a stirrup and a draw hook after the prestressed beam is in place, and formally fixing the waist reinforcement and the prestressed pipeline;
s6, removing the positioning support: and hoisting the bound prestressed beam reinforcing steel bars and the prestressed pipeline for a certain distance, placing cushion blocks below the prestressed beam reinforcing steel bars and the prestressed pipeline, and lowering the prestressed beam reinforcing steel bars and the prestressed pipeline to finish the dismantling of the positioning support.
Preferably, in S1, when the positioning bracket is manufactured, a fixed threaded rod is installed on one side of the base, a hole is formed in the other side of the base, a detachable threaded rod is installed, and adjusting pipes are installed on both the fixed threaded rod and the detachable threaded rod.
Preferably, in S1, the positioning bracket is manufactured by installing a supporting beam on top of two height adjusting devices.
Preferably, in S1, when the lumbar muscle supporting component was installed, respectively placed a lumbar muscle support pole setting in both sides, the lumbar muscle supports pole setting and supporting beam adjustable connection install a plurality of lumbar muscle support horizontal poles in the lumbar muscle support pole setting, and the lumbar muscle supports horizontal pole and lumbar muscle support pole setting adjustable connection.
Preferably, in S1, when the pipe supporting component is installed, a pipe supporting cross bar is placed below the supporting cross bar, two ends of the pipe supporting cross bar are respectively provided with a pipe supporting vertical rod, and the pipe supporting vertical rods are adjustably connected with the supporting cross bar.
Preferably, in S1, the positioning bracket is manufactured by installing a reinforcing beam in the middle of the two height adjusting devices.
Preferably, in S2, when the bottom beam formwork is erected, a bottom beam support system is erected at the bottom of the bottom beam formwork.
Compared with the prior art, the invention has the beneficial effects that: the positioning frame manufactured by the method can be rotated and adjusted, can be well adapted to beams with different sections in the construction process, increases the applicability through various adjustable devices, realizes the rotatable function through a self-disassembling system, reduces the construction cost and increases the construction efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. a base; 2. fixing a threaded rod; 3. the threaded rod can be disassembled; 4. an adjusting tube; 5. a support beam; 6. a hoisting ring; 7. a main reinforcement support bar; 8. reinforcing ribs; 9. the waist tendon supports the upright stanchion; 10. the waist tendon supports the horizontal pole; 11. a pipe support rail; 12. a pipeline supporting upright rod; 13. a prestressed pipe; 14. a reinforcing cross beam; 15. a beam bottom template; 16. a main rib; 17. waist tendon; 18. a beam bottom support system; 19. a backing plate.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
The invention provides a construction method for installing an overrun prestressed beam steel bar and a pipeline based on a positioning bracket, which comprises the following steps as shown in figure 1:
s1, manufacturing a positioning bracket: a fixed height adjusting device is arranged on one side of the base 1, and a detachable height adjusting device is arranged on the other side of the base; the main rib supporting component, the waist rib supporting component and the pipeline supporting component are respectively arranged on the two height adjusting devices, and the waist rib supporting component and the pipeline supporting component are height-adjustable.
S2, supporting a beam bottom template: erecting a beam bottom template 15 according to a design drawing; because the linear load of the over-limit prestressed beam is generally large, a special construction scheme needs to be compiled, the construction is carried out according to the scheme, and the over-limit prestressed beam can be put into use after being checked and accepted;
s3, positioning for paying off: paying off and positioning the prestressed beam and the pipeline according to a design drawing; a first support can be arranged at a position 0.5m away from the side line of the column, and a positioning point is arranged at the middle part every 1.2-1.5 m;
s4, mounting a positioning bracket: the general steel bar configuration of the ultralimit prestressed beam is more, the placing interval is determined according to the beam steel bar configuration, the positioning support interval can be 1.2-1.5 m generally, the positioning support is placed on the beam bottom template 15, the heights of the waist rib 17 and the prestressed pipeline 13 are calculated after the positioning is finished, and the waist rib supporting assembly and the pipeline supporting assembly are adjusted to corresponding positions;
s5, binding steel bars: binding a main reinforcement 16, a waist reinforcement 17 and a prestressed pipeline 13 of the prestressed beam according to a design drawing, binding a stirrup and a draw hook after the prestressed pipeline 13 is in place, and formally fixing the waist reinforcement 17 and the prestressed pipeline 13;
s6, removing the positioning support: slowly hoisting the bound prestressed beam reinforcing steel bars and the prestressed pipeline for a certain distance, placing cushion blocks below the prestressed beam reinforcing steel bars and the prestressed pipeline, removing the positioning support from top to bottom, after the positioning support is removed, classifying and stacking the accessories, periodically checking, finding defects such as deformation and cracks, and timely repairing or replacing the accessories so as to be convenient for turnover use.
In some embodiments, the base 1 can be made of a steel plate with the thickness of 15mm, a base plate 19 made of a steel plate with the thickness of 10mm can be arranged on the top of the base 1, the main rib of the ultralimit prestressed beam is generally large, the protective layer is generally larger than or equal to 30mm, and the base plate 19 is arranged to facilitate the base 1 to be detached.
In some embodiments, during the preparation of the locating support, can weld fixed threaded rod 2 in one side of base 1, fixed threaded rod 2 can adopt the preparation of hot 46 lead screw, the entrance to a cave is seted up to the opposite side of base 1, install detachable threaded rod 3, detachable threaded rod 3 can adopt the preparation of hot 42 lead screw, bottom weld nut, adopt nut + gasket to fix on base 1 during the installation, all install the control tube 4 on fixed threaded rod 2 and detachable threaded rod 3, the control tube 4 can adopt the preparation of hot 48 x 3mm steel pipe, so can accomplish the installation of both sides height adjusting device.
In some embodiments, when the positioning bracket is manufactured, the supporting beam 5 can be installed on the top of two height adjusting devices, the supporting beam 5 can be manufactured by adopting a 50 × 50 × 3mm square steel pipe, the two sides of the supporting beam 5 are welded on the steel pipe 42 and are spliced with the lower height adjusting devices, the effect of a fixed support is achieved, and quick mounting and dismounting are achieved through the splicing mode, the supporting beam 5 is provided with 4 threaded round holes for bracings 14 for fixing the wale supporting component and the pipeline supporting component, the bottom of the supporting beam 5 is welded with a hanging ring 6 manufactured by 20 round steel bracings, so that an electric hoist or a manual hoist can be installed, and the electric hoist or the manual hoist can be used for hanging the bound prestressed beam reinforcements and prestressed pipelines.
In some embodiments, when the main bar support assembly is installed, two ends of the main bar support rod 7 are respectively connected with the height adjusting device, the upper part of the height adjusting device can be provided with a fixed point of the main bar support rod 7, the fixing method adopts a splicing mode, the bottom of the fixed point is provided with a reinforcing rib 8, and two sides of the fixed point are welded with steel plates to form a splicing groove.
In some embodiments, when the lumbar muscle support assembly is installed, a lumbar muscle support upright rod 9 can be respectively placed on two sides of the base 1, the lumbar muscle support upright rod 9 is in threaded connection with the support cross beam 5, a plurality of lumbar muscle support cross rods 10 are installed on the lumbar muscle support upright rods 9, and the lumbar muscle support cross rods 10 are in adjustable connection with the lumbar muscle support upright rods 9. The kidney muscle supports pole setting 9 can move 14 lead screw preparation, can set up a plurality of nuts on the kidney muscle supports pole setting 9, welds the stub on the nut, plays the location and the fixed action of kidney muscle.
In some embodiments, when the pipe supporting assembly is installed, a pipe supporting cross bar 11 can be placed below the supporting cross bar 5, two pipe supporting vertical bars 12 are respectively installed at two ends of the pipe supporting cross bar 11, and the pipe supporting vertical bars 12 are in threaded connection with the supporting cross bar 5. The pipeline supports pole setting 12 and can adopt the preparation of the lead screw of hot 14 equally, can weld the nut of hot 14 in pipeline support pole setting 12 middle part both sides, increases pipeline support pole setting quantity through the nut to adapt to the condition of multilayer prestressing force pipeline, the bottom of pipeline support pole setting 12 sets to the ring form, so that pass pipeline support horizontal pole 11, support the altitude mixture control that the pole setting 12 can realize pipeline support horizontal pole 11 through rotating the pipeline, realize the location to prestressing force pipeline 13.
In some embodiments, when the cross-sectional height of the prestressed beam is greater than 1.2m, the reinforcing beam 14 needs to be installed in the middle of the two height adjusting devices, the reinforcing beam 14 can be made of square steel pipes with the thickness of 50 × 50 × 3mm, and the two sides of the reinforcing beam are fixed with the height adjusting devices in a pin-key connection manner.
In some embodiments, the bottom beam support system 18 may be erected at the bottom of the bottom beam template 15 when the bottom beam template is erected.
By adopting the construction method, the raw material cost and the manufacturing labor cost of the common positioning frame can be saved, the applicability of the positioning bracket is increased through the adjustable effect of each part, the turnover use is realized through the disassembly of each part, the green and environment-friendly effect is realized, and the engineering cost is reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.
Claims (7)
1. A construction method for installing overrun prestressed beam steel bars and pipelines based on a positioning bracket is characterized by comprising the following steps:
s1, manufacturing a positioning bracket: a fixed height adjusting device is arranged on one side of the base, and a detachable height adjusting device is arranged on the other side of the base; the two height adjusting devices are respectively provided with a main rib supporting component, a waist rib supporting component and a pipeline supporting component, and the heights of the waist rib supporting component and the pipeline supporting component are adjustable;
s2, supporting a beam bottom template: erecting a beam bottom template according to a design drawing;
s3, positioning the wire releasing: paying off and positioning the prestressed beam and the pipeline according to a design drawing;
s4, mounting a positioning bracket: placing a positioning bracket on the beam bottom template, calculating the heights of the waist rib and the prestressed pipeline after positioning is finished, and adjusting the waist rib supporting assembly and the pipeline supporting assembly to corresponding positions;
s5, binding steel bars: binding a main reinforcement, a waist reinforcement and a prestressed pipeline of the prestressed beam according to a design drawing, binding a stirrup and a draw hook after the prestressed pipeline is in place, and formally fixing the waist reinforcement and the prestressed pipeline;
s6, removing the positioning support: and hoisting the bound prestressed beam reinforcing steel bars and the prestressed pipeline for a certain distance, placing cushion blocks below the prestressed beam reinforcing steel bars and the prestressed pipeline, and lowering the prestressed beam reinforcing steel bars and the prestressed pipeline to finish the dismantling of the positioning support.
2. The construction method according to claim 1, wherein in S1, when the positioning bracket is manufactured, a fixed threaded rod is installed on one side of the base, a hole is formed on the other side of the base, a detachable threaded rod is installed on the other side of the base, and adjusting pipes are installed on both the fixed threaded rod and the detachable threaded rod.
3. The construction method as claimed in claim 1 or 2, wherein in S1, the positioning bracket is fabricated by installing a supporting beam on top of two height adjusting means.
4. The construction method according to claim 3, wherein in S1, when the wale supporting component is installed, a wale supporting vertical rod is respectively placed at two sides, the wale supporting vertical rod is adjustably connected with the supporting cross beam, a plurality of wale supporting cross rods are installed on the wale supporting vertical rod, and the wale supporting cross rods are adjustably connected with the wale supporting vertical rod.
5. The method of claim 3, wherein in step S1, when the pipe supporting assembly is installed, a pipe supporting cross bar is placed under the supporting cross bar, and two ends of the pipe supporting cross bar are respectively provided with a pipe supporting vertical bar, and the pipe supporting vertical bars are adjustably connected with the supporting cross bar.
6. The construction method as claimed in claim 1 or 2, wherein in S1, a reinforcing cross member is installed at the middle of the two height adjusting means when the positioning bracket is manufactured.
7. The construction method according to claim 1 or 2, wherein in S2, when the bottom beam formwork is erected, a bottom beam support system is erected at the bottom of the bottom beam formwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593445.XA CN114856208A (en) | 2022-05-27 | 2022-05-27 | Construction method for installing ultralimit prestressed beam and pipeline based on positioning support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593445.XA CN114856208A (en) | 2022-05-27 | 2022-05-27 | Construction method for installing ultralimit prestressed beam and pipeline based on positioning support |
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| CN114856208A true CN114856208A (en) | 2022-08-05 |
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| CN202210593445.XA Pending CN114856208A (en) | 2022-05-27 | 2022-05-27 | Construction method for installing ultralimit prestressed beam and pipeline based on positioning support |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB728231A (en) * | 1951-07-25 | 1955-04-13 | Lipski Abraham | An improved equipment for bending simultaneously two rigid metal reinforcements |
| JPH0647505U (en) * | 1992-10-16 | 1994-06-28 | 守彦 奥村 | Temporary support for reinforcing bar construction |
| CN109025315A (en) * | 2018-07-31 | 2018-12-18 | 中国十七冶集团有限公司 | A kind of auxiliary device and its construction method of beam steel bar colligation |
| CN111827687A (en) * | 2020-08-05 | 2020-10-27 | 远大住宅工业（天津）有限公司 | Stair reinforcement positioner |
| CN212551518U (en) * | 2020-05-29 | 2021-02-19 | 云南建投第三建设有限公司 | Simple tool type auxiliary supporting device for manufacturing steel reinforcement framework |
| CN214786139U (en) * | 2021-01-29 | 2021-11-19 | 中交第四公路工程局有限公司 | Building conversion layer reinforcing bar positioner |
-
2022
- 2022-05-27 CN CN202210593445.XA patent/CN114856208A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB728231A (en) * | 1951-07-25 | 1955-04-13 | Lipski Abraham | An improved equipment for bending simultaneously two rigid metal reinforcements |
| JPH0647505U (en) * | 1992-10-16 | 1994-06-28 | 守彦 奥村 | Temporary support for reinforcing bar construction |
| CN109025315A (en) * | 2018-07-31 | 2018-12-18 | 中国十七冶集团有限公司 | A kind of auxiliary device and its construction method of beam steel bar colligation |
| CN212551518U (en) * | 2020-05-29 | 2021-02-19 | 云南建投第三建设有限公司 | Simple tool type auxiliary supporting device for manufacturing steel reinforcement framework |
| CN111827687A (en) * | 2020-08-05 | 2020-10-27 | 远大住宅工业（天津）有限公司 | Stair reinforcement positioner |
| CN214786139U (en) * | 2021-01-29 | 2021-11-19 | 中交第四公路工程局有限公司 | Building conversion layer reinforcing bar positioner |
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