CN115897906A - Prefabricated wall joint bar positioning auxiliary device and prefabricated shear wall construction method - Google Patents
Prefabricated wall joint bar positioning auxiliary device and prefabricated shear wall construction method Download PDFInfo
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- CN115897906A CN115897906A CN202211566318.7A CN202211566318A CN115897906A CN 115897906 A CN115897906 A CN 115897906A CN 202211566318 A CN202211566318 A CN 202211566318A CN 115897906 A CN115897906 A CN 115897906A
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Abstract
The invention relates to the technical field of building construction, in particular to a prefabricated wall joint bar positioning auxiliary device and a prefabricated shear wall construction method. The prefabricated wall joint bar positioning auxiliary device comprises a positioning template consistent with the bottom surface shape of the prefabricated shear wall, the positioning template is formed by combining a plurality of unit modules in rows, each unit module is formed by splicing a first split block and a second split block, the first split block and the second split block are respectively provided with a limiting split block, two limiting split blocks are combined into a limiting cylinder when the first split block and the second split block are spliced, and the limiting cylinder is arranged corresponding to the distribution position of a reserved joint bar and used for clamping the reserved joint bar. The prefabricated wall joint bar positioning auxiliary device and the prefabricated shear wall construction method adopting the device avoid the problem of deviation of the reserved joint bars, ensure reliable splicing of the shear wall and the joint bars, reduce the construction difficulty, improve the construction safety and the construction quality and meet the acceptance criteria.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a prefabricated wall joint bar positioning auxiliary device and a prefabricated shear wall construction method.
Background
Among the present assembled shear force wall structural design, prefabricated shear force wallboard often meets in the installation and reserves the dowel bar off normal, reserves the local bending of dowel bar, reserves the not enough scheduling problem of dowel bar length, leads to falling behind the precast shear force wallboard hardly aligns the dowel bar, and reserves the not enough meeting of dowel bar length and lead to the reinforcing bar to stretch into length in the sleeve not enough, and the length of stretching into that does not satisfy the standard requirement will cause the structural safety problem, and later stage acceptance check does not give through.
The existing measure for ensuring the position of the reserved joint bar is to adopt a method of positioning a steel plate, namely, according to a joint bar layout, a hole with the size of a corresponding position is formed in the steel plate, and the position of the reserved joint bar is ensured to be accurate by utilizing the positioning steel plate during the binding of the steel bar. However, the method of positioning the steel plate has the following defects: 1) The deviation of the reserved joint bar root position can be ensured only, and the bending deviation of the upper part or the local part of the steel bar cannot be controlled; 2) Each prefabricated shear wall needs to customize and position the steel plate according to the dowel bar diagram, so that the reusability is not high, and materials are wasted; 3) The positioning steel plate can only assist in positioning when the steel bars are bound, and needs to be taken off when the prefabricated shear wall is hoisted, so that the use is inconvenient, and the efficiency is low; 4) The positioning steel plate can not control whether the extension length of the reserved joint bar meets the standard requirement or not, and the problem that the length of the steel bar is insufficient when the steel bar extends into the sleeve is possibly caused after the later installation.
The existing method for installing the prefabricated shear wall is that a tower crane utilizes a lifting point at the top of the prefabricated shear wall to lift the prefabricated shear wall to a preset floor position, a worker manually adjusts the position of the prefabricated shear wall to enable a sleeve hole at the bottom of the prefabricated shear wall to be closed with a reserved joint bar, and as the prefabricated shear wall sleeve is positioned at the bottom of the wall, the sleeve hole at the bottom of the prefabricated shear wall can be seen only when the prefabricated shear wall sleeve is stood on the ground upwards during field lifting. If meet the circumstances such as dowel deviation, local bending, need keep prefabricated shear wall to hang in the air, lie prone simultaneously and beat the reservation dowel with instruments such as hammer subaerial and make it aim at the sleeve entrance to a cave, still hang in the air because prefabricated shear wall this moment, and prefabricated shear wall lateral bracing is not connected yet, has great potential safety hazard during the adjustment reinforcing bar. In addition, when meeting the circumstances of reserving the dowel deviation, bending and leading to prefabricated shear wall installation not high, the field worker can choose to directly cut off the dowel of deviation, does so all cause very big influence to the safety of whole structure, in case find out will not pass the acceptance test.
Therefore, the prefabricated shear wall is difficult to install due to deviation of the reserved joint bars of the prefabricated shear wall in the prior art, and if the deviation is serious and difficult to adjust, the whole structure safety is seriously influenced.
Disclosure of Invention
Based on the above problems, an object of the present invention is to provide an auxiliary device for positioning a joint bar of a prefabricated wall, which solves the problem of deviation of the reserved joint bar, facilitates accurate matching with the prefabricated shear wall, reduces construction difficulty, and improves construction safety.
The invention also aims to provide a construction method of the prefabricated shear wall, which reduces the construction difficulty and meets the acceptance requirements.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a prefabricated wall dowel bar location auxiliary device, it includes the locating template unanimous with prefabricated shear wall bottom surface shape, locating template is formed by the combination of a plurality of unit module in a row, every unit module is formed by first components of a whole that can function independently piece and second components of a whole that can function independently piece, be provided with spacing split piece on first components of a whole that can function independently piece and the second components of a whole that can function independently piece, two spacing split pieces make up into spacing section of thick bamboo when first components of a whole that can function independently piece and second components of a whole that can function independently piece, spacing section of thick bamboo corresponds the distribution position of reserving the dowel bar and arranges for clip the dowel bar of reserving.
Particularly, the limiting split block penetrates out of the upper surface of the first split block or the second split block, a flange located inside the corresponding split block is arranged on the limiting split block, and a spring is arranged between the flange and the lower surface of the corresponding split block in a clamping mode, so that the limiting split block descends under the action of the prefabricated shear wall, and the reserved dowel bars are exposed.
Particularly, limiting angle steel is arranged at four corners of the positioning template and used for enabling the prefabricated shear wall to fall along the limiting angle steel and ensuring that the bottom sleeve of the prefabricated shear wall is aligned with the position of the reserved joint bar.
Particularly, threaded holes are formed in the side surfaces of the unit modules, and adjacent unit modules are fixedly connected with the bolts through connecting steel plates.
Particularly, a plug connector is arranged on either one of the first split block and the second split block, and a plug interface is correspondingly arranged on the other one of the first split block and the second split block, so that the first split block and the second split block are matched and plugged.
Particularly, concrete vibrating windows are formed in the first split block and/or the second split block.
In order to achieve the purpose, on the other hand, the invention adopts the following technical scheme:
the utility model provides a prefabricated shear wall construction method, the bottom sleeve of with prefabricated shear wall and reserve the dowel location grafting to adopt foretell prefabricated wall dowel location auxiliary device, it includes the step:
a) Designing a positioning template with corresponding size according to the bottom surface shape of the prefabricated shear wall and the distribution position of the reserved joint bars, dividing the positioning template into a plurality of unit modules, splicing a first split block and a second split block of each unit module, and wrapping and positioning the reserved joint bars through a combined limiting cylinder;
b) Connecting and fixing each unit module by using a connecting steel plate and a bolt, and installing limit angle steels at four corners of a positioning template;
c) Hoisting the prefabricated shear wall, aligning the edges of the prefabricated shear wall with the limiting angle steel and slowly lowering the prefabricated shear wall, and ensuring the position precision of the reserved joint bars due to the existence of the limiting cylinders so that the sleeves at the bottom of the prefabricated shear wall are accurately connected with the reserved joint bars in an aligned mode;
d) And after the top of the reserved dowel bar extends into the sleeve, suspending the prefabricated shear wall to descend, splitting the first split block and the second split block of each unit module, taking away the positioning template, and then continuing to descend the prefabricated shear wall until the reserved dowel bar is completely inserted.
Particularly, in the step A), whether the top end surface of the reserved joint bar is flush with the top surface of the limiting cylinder is checked, and if so, the length of the reserved joint bar can be confirmed to meet the standard requirement; otherwise, the position of the dowel bar needs to be adjusted.
Particularly, before the step C), when the lower layer concrete is poured, the lower layer concrete is vibrated by using a vibrating rod through a concrete vibrating window arranged on the first split block or the second split block.
Particularly, in the step C), when the edge of the sleeve at the bottom of the prefabricated shear wall touches the limiting cylinder, the limiting cylinder moves downwards along with the prefabricated shear wall due to the existence of the spring, so that the reserved joint bars are exposed and inserted into the prefabricated shear wall.
In summary, compared with the prior art, the precast wall dowel positioning auxiliary device and the precast shear wall construction method have the advantages that the modular structure is adopted, the modules with different moduli are selected for the shear walls with different lengths to be assembled, so that the position of each dowel is correspondingly positioned, the problem of deviation of the reserved dowel is avoided, the shear wall and the dowel are ensured to be reliably spliced, the construction difficulty is reduced, the construction safety and the construction quality are improved, and the acceptance standard is met.
Drawings
FIG. 1 is a schematic structural diagram of a prefabricated wall joint bar positioning auxiliary device provided by an embodiment of the invention;
FIG. 2 is a schematic exploded view of a prefabricated wall joint bar positioning auxiliary device provided by an embodiment of the present invention;
FIG. 3 is a schematic view of a unit module in the prefabricated wall joint bar positioning auxiliary device provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a first split block in the prefabricated wall joint bar positioning auxiliary device according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a second split block in the prefabricated wall dowel positioning auxiliary device provided by the embodiment of the invention.
In the figure:
100-positioning a template; 110-a unit module; 111-first molecular block; 112-second split block; 113-a limit split block; 114-a threaded hole; 115-a spring; 116-a plug-in connector; 117-interface; 118-concrete vibrating window; 200-connecting steel plates; 300-limiting angle steel; and 400-reserving the dowel bars.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless otherwise explicitly stated or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may include, for example, fixed or detachable connections, mechanical or electrical connections, indirect connections through intervening media, communications between two elements, or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 5, the preferred embodiment provides a prefabricated wall dowel positioning auxiliary device, which includes a positioning template 100 consistent with the shape of the bottom surface of a prefabricated shear wall, the positioning template 100 is formed by combining a plurality of unit modules 110 in rows, each unit module 110 is formed by splicing a first split block 111 and a second split block 112, the first split block 111 and the second split block 112 are respectively provided with a limiting split block 113, the two limiting split blocks 113 are combined into a limiting cylinder when the first split block 111 and the second split block 112 are spliced, and the limiting cylinders are arranged corresponding to the distribution positions of reserved dowels 400 and used for clamping the reserved dowels 400.
Wherein, the spacing section of thick bamboo of combination can be with reserving joint bar 400 clamp in the centre to guarantee to reserve joint bar 400 from last to perpendicular all the time down, can not take place off normal and local bending, guaranteed the straightness that hangs down of reinforcing bar, the later stage of being convenient for and telescopic butt joint.
The length of the unit module 110 is selected according to the building module, such as 150, 200, 250, 300, and the like, to match the shear walls with different lengths, and threaded holes 114 are formed at the positions 30mm away from the edges of the two sides of the unit module 110 to connect the different unit modules 110 by using the connecting steel plates 200 and bolts. The connection steel plate 200 preferably adopts a comb-tooth-shaped shape, the bolts do not need to be completely screwed down when the connection steel plate 200 is disassembled in the later period of the mode, the bolts only need to be loosened, the connection steel plate 200 can be pulled out from the upper portion, the site construction is convenient, and the construction efficiency is improved.
According to the position of the reserved steel bar 400 in the thickness direction of the prefabricated shear wall, the unit module 110 is divided into a first split block 111 and a second split block 112 in the thickness direction, wherein the first split block 111 and the second split block 112 are independent bodies, and the peripheries of the first split block 111 and the second split block 112 are welded and enclosed by steel plates.
Further, the limiting split block 113 penetrates through the upper surface of the first split block 111 or the second split block 112, a flange located inside the corresponding split block is arranged on the limiting split block 113, and a spring 115 is clamped between the flange and the lower surface of the corresponding split block, so that the limiting cylinder is movable in the vertical direction, and the limiting split block 113 descends after being acted by the prefabricated shear wall, and the reserved dowel 400 is exposed.
Either one of the first split block 111 and the second split block 112 is provided with a plug 116, and the other one of the first split block 111 and the second split block 112 is correspondingly provided with a plug interface 117, so that the first split block 111 and the second split block 112 are matched and plugged. The connection mode is convenient for the prefabricated shear wall to be hoisted in the later period, the positioning template 100 can be disassembled towards two sides, and the subsequent falling of the prefabricated shear wall to the designated position is not influenced.
And limiting angle steels 300 are arranged at four corners of the positioning template 100, and are used for enabling the prefabricated shear wall to descend along the limiting angle steels 300 and ensuring that the bottom sleeve of the prefabricated shear wall is aligned with the position of the reserved dowel bar 400.
The first or second block 111 or 112 is further provided with a concrete vibrating window 118, and when the lower layer concrete is poured, the vibrating rod can vibrate the lower layer concrete through the concrete vibrating window 118, and the acting radius of the vibrating rod can cover the rest holes which are not reserved. In addition, the concrete vibrating window 118 can be used for vibrating concrete, and can also serve as a handle when the unit modules are pulled away towards two sides to be moved out, so that the moving-out process is simple and convenient.
To this end, the present embodiment further provides a prefabricated shear wall construction method, where a bottom sleeve of the prefabricated shear wall is inserted into the reserved joint bar 400 in an aligned manner, and the prefabricated wall joint bar positioning auxiliary device is adopted, and the method includes the following steps:
step A), designing a positioning template 100 with corresponding size according to the bottom surface shape of the prefabricated shear wall and the distribution position of the reserved joint bars 400, dividing the positioning template 100 into a plurality of unit modules 110, splicing each unit module 110 by a first split block 111 and a second split block 112, and wrapping and positioning the reserved joint bars 400 through a combined limiting cylinder.
It should be noted that, it is required to check whether the top end surface of the reserved joint bar 400 is flush with the top surface of the limiting cylinder, and if so, it can be determined that the length of the reserved joint bar 400 meets the specification requirement; otherwise, the position of the dowel bar needs to be adjusted to ensure that the steel bar extends out of the sleeve of the shear wall by enough length for being inserted into the sleeve of the shear wall, and the function of checking the qualified length of the dowel bar extending out is achieved.
And step B), connecting and fixing each unit module 110 with bolts by using the connecting steel plates 200, and installing limiting angle steels 300 at four corners of the positioning template 100 so that the subsequent prefabricated shear wall can accurately fall down.
In addition, when the lower layer concrete is poured, the lower layer concrete is vibrated by using a vibrating rod through a concrete vibrating window 118 formed in the first split block 111 or the second split block 112.
And C), after the concrete is finally set, hoisting the prefabricated shear wall, aligning the edges and corners of the prefabricated shear wall with the limiting angle steel 300 by using a tower crane and slowly lowering the prefabricated shear wall, ensuring the position precision of the reserved joint bars 400 due to the existence of the limiting cylinders, and accurately aligning and connecting the sleeves at the bottom of the prefabricated shear wall with the reserved joint bars 400.
It is worth mentioning that, when the sleeve edge at the bottom of the precast shear wall touches the limiting barrel, the limiting barrel can move downwards along with the precast shear wall due to the existence of the spring 115, so that the reserved dowel 400 is exposed and inserted into the precast shear wall.
And D), after the top of the reserved joint bar 400 extends into the sleeve, suspending the prefabricated shear wall to descend, splitting the first split block 111 and the second split block 112 of each unit module 110, taking away the positioning template 100, and then continuing to descend the prefabricated shear wall until the reserved joint bar 400 is completely inserted, so that the assembly of the shear wall is completed.
The taken-away equipment can be inserted and assembled on the upper floor again, and is continuously used for limiting the floor dowel, checking the extension length of the dowel and assisting the installation of the prefabricated shear wall, can be disassembled and recycled after being completely used, and is continuously used in other projects, so that resources are saved.
In conclusion, the precast wall dowel positioning auxiliary device and the precast shear wall construction method adopting the precast wall dowel positioning auxiliary device have the following advantages:
(1) The device uses standardized unit modules 110, is assembled in a parameterization mode, has high reuse rate and can utilize resources with maximum efficiency;
(2) When the shear wall is installed, an installer does not need to lie on the ground to observe whether the sleeve hole is aligned with the top of the reserved joint bar 400 or not, and can align the prefabricated shear wall only by descending along the position of the limit angle steel 300, so that the field construction difficulty is greatly reduced, and the construction efficiency is improved;
(3) After the device is installed, whether the length of the reserved joint bar 400 meets the standard requirement can be quickly checked through the limiting cylinder;
(4) The movable limiting cylinder can ensure that the reserved joint bars 400 can be vertically aligned with the openings of the sleeves, and can also descend for a certain distance along with the prefabricated shear wall, so that the tops of all the reserved joint bars 400 can be simultaneously inserted into the openings of the sleeves at the bottom of the prefabricated shear wall;
(5) After the sleeve of the prefabricated shear wall is connected with the reserved dowel 400, the first split block 111 or the second split block 112 can be pulled to two sides in a simple splicing mode to be separated, so that the whole positioning auxiliary device is removed, and the subsequent falling of the prefabricated shear wall to a specified position is not influenced;
(6) The concrete vibrating window 118 on the split block can be used for vibrating concrete and also can be used as a handle, so that the practicability is high;
(7) The unit modules 110 are connected by adopting the comb-tooth-shaped connecting steel plates 200, and the connecting steel plates 200 can be pulled out from the upper part only by loosening bolts, so that the site construction is convenient, and the construction efficiency is improved;
(8) The device has modularization, parameterization and refinement, conforms to standardization and assembly emphasized by an assembly type building, pays attention to quality, safety, efficiency and benefit, and plays an unlimited role in transformation and upgrading of leading the construction of the assembly type building.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a prefabricated wall dowel location auxiliary device, its characterized in that includes the locating template unanimous with prefabricated shear wall bottom surface shape, the locating template is formed by the combination of a plurality of unit module in a row, every the unit module is formed by first split block and second split block amalgamation, first split block with be provided with spacing split block on the second split block respectively, two spacing split blocks are in first split block with make up into spacing section of thick bamboo when the second split block amalgamation, spacing section of thick bamboo corresponds the distribution position of reserving the dowel and arranges for clip reserves the dowel.
2. The precast wall dowel positioning assistance device of claim 1, wherein: the limiting split block penetrates out of the upper surface of the first split block or the upper surface of the second split block, a flange located inside the corresponding split block is arranged on the limiting split block, and a spring is arranged between the flange and the lower surface of the corresponding split block in a clamping mode, so that the limiting split block descends after being acted by the prefabricated shear wall, and reserved inserting ribs are exposed.
3. The precast wall dowel positioning assistance device of claim 1, wherein: and limiting angle steels are arranged at four corners of the positioning template and used for enabling the prefabricated shear wall to descend along the limiting angle steels and ensuring that the bottom sleeve of the prefabricated shear wall is aligned with the position of the reserved joint bar.
4. The precast wall dowel positioning assistance device of claim 1, wherein: threaded holes are formed in the side surfaces of the unit modules, and adjacent unit modules are fixedly connected with the bolts through connecting steel plates.
5. The precast wall dowel positioning assistance device of claim 1, wherein: and either one of the first split block and the second split block is provided with a plug connector, and the other one of the first split block and the second split block is correspondingly provided with a plug interface, so that the first split block and the second split block are matched and plugged.
6. The precast wall dowel positioning assistance device of claim 1, wherein: and a concrete vibrating window is arranged on the first split block and/or the second split block.
7. A precast shear wall construction method is characterized in that a bottom sleeve of a precast shear wall is in contraposition insertion connection with a reserved joint bar, and the precast wall joint bar positioning auxiliary device of any one of claims 1 to 6 is adopted, and the method comprises the following steps:
a) Designing a positioning template with corresponding size according to the bottom surface shape of the prefabricated shear wall and the distribution position of the reserved joint bars, dividing the positioning template into a plurality of unit modules, splicing a first split block and a second split block of each unit module, and wrapping and positioning the reserved joint bars through a combined limiting cylinder;
b) Connecting and fixing each unit module by using a connecting steel plate and a bolt, and installing limit angle steels at four corners of the positioning template;
c) Hoisting the prefabricated shear wall, aligning the edges of the prefabricated shear wall with the limiting angle steel and slowly lowering the prefabricated shear wall, and ensuring the position precision of the reserved joint bars due to the existence of the limiting cylinders so that the sleeves at the bottom of the prefabricated shear wall are accurately connected with the reserved joint bars in an aligned mode;
d) And after the top of the reserved dowel bar extends into the sleeve, suspending the prefabricated shear wall to descend, splitting the first split block and the second split block of each unit module, taking away the positioning template, and then continuing to descend the prefabricated shear wall until the reserved dowel bar is completely inserted.
8. The precast shear wall construction method according to claim 7, wherein: in the step A), whether the top end surface of the reserved joint bar is flush with the top surface of the limiting cylinder is checked, and if so, the length of the reserved joint bar can be confirmed to meet the standard requirement; otherwise, the position of the dowel bar needs to be adjusted.
9. The precast shear wall construction method according to claim 7, wherein: before the step C), when the lower layer concrete is poured, the lower layer concrete is vibrated by using a vibrating rod through a concrete vibrating window arranged on the first split block or the second split block.
10. The precast shear wall construction method according to claim 7, wherein: in the step C), when the edge of the sleeve at the bottom of the prefabricated shear wall touches the limiting cylinder, the limiting cylinder moves downwards along with the prefabricated shear wall due to the existence of the spring, so that the reserved joint bars are exposed and inserted into the prefabricated shear wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211566318.7A CN115897906A (en) | 2022-12-07 | 2022-12-07 | Prefabricated wall joint bar positioning auxiliary device and prefabricated shear wall construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211566318.7A CN115897906A (en) | 2022-12-07 | 2022-12-07 | Prefabricated wall joint bar positioning auxiliary device and prefabricated shear wall construction method |
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| Publication Number | Publication Date |
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| CN115897906A true CN115897906A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211566318.7A Pending CN115897906A (en) | 2022-12-07 | 2022-12-07 | Prefabricated wall joint bar positioning auxiliary device and prefabricated shear wall construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115897906A (en) |
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- 2022-12-07 CN CN202211566318.7A patent/CN115897906A/en active Pending
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