CN112411886A - Device and method for accurately positioning fingerprints on steel bars - Google Patents
Device and method for accurately positioning fingerprints on steel bars Download PDFInfo
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- CN112411886A CN112411886A CN202011344069.8A CN202011344069A CN112411886A CN 112411886 A CN112411886 A CN 112411886A CN 202011344069 A CN202011344069 A CN 202011344069A CN 112411886 A CN112411886 A CN 112411886A
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- fingerprint module
- fingerprint
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
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- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a device and a method for accurately positioning a steel bar in a prefabricated part, which comprises fingerprint module units and a supporting and connecting unit, wherein the fingerprint module units are fixedly connected through the supporting and connecting unit, the fingerprint module unit is formed by enclosing a first fingerprint module and a second fingerprint module, a groove is arranged between the two fingerprint modules, a steel bar channel matched with the steel bar is formed by the groove of the fingerprint module units after buckling, female ribs are arranged in the groove, the steel bar in the prefabricated part is occluded with a plurality of fingerprint module units, the fingerprint module units are relatively fixed through the supporting and connecting unit, so that the relative position of the steel bar in the prefabricated part does not move and does not rotate, the fingerprint module units, the supporting and connecting unit and the steel bar jointly form a stable rigid frame, namely, the steel bar can be accurately positioned, and the accuracy of the position of the steel bar in the prefabricated part is ensured, the strength, the rigidity and the overall performance of the connecting area are not damaged after the components are connected. The application method is simple and convenient, can form the manufacturing construction standardization of the prefabricated reinforced concrete member, and is suitable for large-scale popularization.
Description
Technical Field
The invention relates to the technical field of construction of prefabricated reinforced concrete structures, in particular to a device and a method for accurately positioning a reinforcing steel bar by using fingerprints.
Background
At present, with the progress of industrialization of novel buildings greatly promoted by the nation, lean construction and construction are continuously upgraded, and prefabricated assembled structures are more and more widely applied to the field of buildings. The core of the construction of the prefabricated structural system is the connecting area between the components, and the strength and the rigidity of the connecting area directly determine the overall performance of the structural system. In actual construction, prefabricated components such as prefabricated beams, columns, beam plates, stairs and the like form a reasonable structural stress system through hoisting connection. In a prefabricated reinforced concrete structural system, a connecting area is usually positioned at the core part of a beam-column joint, various stress bars, construction bars, stirrups and the like need to be arranged along the column direction and the beam direction, and the construction of steel bar connection is carried out in the complex stress area, so that the spatial position, the arrangement angle and the like of the steel bars to be connected are required to strictly meet the design requirements.
In actual construction sites, in the construction of cast-in-place reinforced concrete structures, the construction of prefabricated reinforced concrete members and the on-site assembly and connection construction of the prefabricated reinforced concrete members, the steel bar protection layer and the steel bar positioning usually adopt common cuboid concrete cushion blocks, quincunx concrete cushion blocks, plastic cushion blocks, steel bar split heads and the like. When circular ribbed steel bar is placed on the cushion, the contact surface of reinforcing bar and cushion generally is point or line contact, when bearing site operation activity load and operation disturbance, cause the cushion to bear concentrated load and damage or shift, can't guarantee reinforcing bar protective layer thickness more can't guarantee reinforcing bar position accuracy, it is big to lead to reinforcing bar protective layer thickness deviation among the cast-in-place reinforced concrete component, reinforcing bar position error is big among the prefabricated assembled reinforced concrete structure, can't guarantee the accurate connection, cause concrete structure durability problem and prefabricated assembled reinforced concrete structure construction inefficiency problem from this.
Disclosure of Invention
In order to solve the problem of accurate positioning of the steel bars in the reinforced concrete member, the invention provides a device and a method for accurately positioning the steel bars by matching with the rib patterns of the steel bars.
The invention provides a device and a method for accurately positioning fingerprints of steel bars, which comprises a fingerprint module unit and a supporting and connecting unit, wherein the fingerprint module unit comprises a plurality of fingerprint modules which are arranged in N rows and M columns at the same height, the fingerprint modules in adjacent rows and adjacent columns are fixedly connected through the supporting and connecting unit, the fingerprint modules are formed by mutually embedding a first fingerprint module and a second fingerprint module, one surfaces of the first fingerprint module and the second fingerprint module, which are contacted, are respectively provided with a groove which extends from a lower end surface to an upper end surface, the two grooves are mutually butted to form a steel bar channel which penetrates through the upper end surface and the lower end surface of the fingerprint modules, the inner surfaces of the grooves are provided with transverse rib and female rib which are matched with transverse convex ribs of the steel bars and longitudinal rib which are matched with longitudinal convex ribs of the steel bars, the end surfaces of the first fingerprint module and the second fingerprint module, which are contacted, the plug-in components and the slots are respectively arranged on two sides of the groove, the plug-in components on the first fingerprint modules and the slots on the second fingerprint modules are provided with positioning holes capable of aligning with each other, the first fingerprint modules and the second fingerprint modules are locked and fixed through screws inserted into the positioning holes, the supporting and connecting units comprise supporting connecting rods I or supporting connecting rods II, the fingerprint modules in adjacent rows are connected and fixed through the supporting connecting rods I, and the fingerprint modules in adjacent rows are connected and fixed through the supporting connecting rods II.
In the prefabricated part unit of the steel bar accurate positioning fingerprint device, the 1 st row and the Nth row, the 1 st row and the Mth row of fingerprint module units are detachably connected and fixed with a rigid template through fasteners, the rigid template is enclosed to form a rectangular frame, the fingerprint module units, the supporting and connecting units and the modules form a rigid frame, and the reserved exposed connecting steel bars of the adjacent rigid frame are fixedly connected through a sleeve.
The invention has the beneficial effects that:
1. the connecting method is simple and convenient, the steel bars can be tightly occluded in the fingerprint module, the steel bars cannot move longitudinally, the steel bars do not rotate in the fingerprint module device, the steel bars can be accurately positioned, the accuracy of the positions of the steel bars in the prefabricated components is ensured, the accurate force transmission of various stress bars, construction bars and stirrups arranged along the column direction and the beam direction is ensured, the strength, the rigidity and the overall performance of the connecting area after the components are connected are not damaged, the manufacturing and construction standardization of the prefabricated reinforced concrete components can be formed, and the method is suitable for large-scale popularization.
2. The device can also play a role of the cushion block of the steel bar protection layer, so that the thickness of each steel bar protection layer is uniform, the phenomenon of 'exposed bars' can not occur after concrete curing and form removal, and the quality of the prefabricated part is ensured.
Drawings
FIG. 1 is a schematic view of the crescent-shaped reinforcing rib of the present invention;
FIG. 2 is a schematic structural diagram of a rebar fingerprint module of the present invention;
FIG. 3 is a diagram illustrating a groove structure of a fingerprint module according to the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is a schematic view of the fingerprint module of the present invention;
FIG. 6 is a schematic diagram of the fingerprint module of the present invention arranged along the longitudinal direction of the member;
FIG. 7 is a schematic diagram of the precise positioning of a reinforcement bar in a spatial coordinate system according to the present invention;
in the figure: the steel bar comprises 1-steel bar transverse convex rib, 2-steel bar longitudinal convex rib, 12-transverse rib female rib, 13-longitudinal rib female rib, 4-first fingerprint module, 5-second fingerprint module, 43-groove, 41-plug, 42-slot, 6-screw, 61-locating hole, 7-supporting connecting rod I, 8-supporting connecting rod II, 9-rigid template, 10-fastening screw, 101-screw hole, 11-sleeve, 14-longitudinal steel bar, 15-steel bar and 16-rigid frame.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 6, a device and a method for accurately positioning a fingerprint on a steel bar include a fingerprint module unit and a supporting connection unit, wherein the fingerprint module unit includes a plurality of fingerprint modules arranged in N rows and M columns at the same height, and the fingerprint modules in adjacent rows and adjacent columns are fixedly connected through the supporting connection unit.
Each fingerprint module is formed by mutually enclosing a first fingerprint module 4 and a second fingerprint module 5, one surface of the first fingerprint module 4, which is contacted with the second fingerprint module 5, is provided with a groove 43 extending from the lower end surface to the upper end surface, the two grooves 43 are mutually butted to form a steel bar channel penetrating through the upper end surface and the lower end surface of the fingerprint module, the inner surface of the groove 43 is provided with transverse rib female ribs 12 matched with the transverse convex ribs 1 of the steel bar, and the longitudinal rib female rib 13 is matched with the longitudinal rib 2 of the reinforcing steel bar, the end surfaces of the first fingerprint module 4 and the second fingerprint module 5 which are contacted are also provided with a plug-in piece 41 and a slot 42 which can be embedded into each other, the plug-in piece 41 and the slot 42 are respectively arranged at two sides of the groove 43, the plug-in piece 41 on the first fingerprint module 4 and the slot 42 on the second fingerprint module 5 are provided with positioning holes 61 which can be aligned with each other, and the first fingerprint module 4 and the second fingerprint module 5 are locked and fixed through screws 6 inserted into the positioning holes 61.
In the prefabricated component unit that is equipped with reinforcing bar accurate positioning fingerprint device, the fingerprint module is including a plurality of fingerprint modules of arranging such as N row M row height, each fingerprint module passes through fastening screw 10 and can dismantle with rigid template 9 and be connected, rigid template 9 encloses to close and forms rectangular frame, the side arris face of adjacent fingerprint module is connected fixedly through supporting connecting rod one 7 or supporting connecting rod two 8, supporting connecting rod one 7 or supporting connecting rod two 8 mutually perpendicular, the reinforcing bar is fixed by a plurality of fingerprint module interlock centre gripping, concrete is pour in the rectangular frame of rigid template, obtain the prefabricated component unit. The adjacent surfaces of the steel bars are provided with steel bars which penetrate through the rigid template 9, and the adjacent component unit steel bars are connected through the sleeve 11 after being aligned with each other.
It should be further noted that fig. 6 only provides a schematic structural diagram of the fingerprint positioning device longitudinally arranged in the prefabricated component, which is illustrated as a longitudinal steel bar 14, the fingerprint modules mounted on the adjacent longitudinal steel bars 14 are connected and fixed through a second support connecting bar 8, the prefabricated component may further include a transverse steel bar, the device of the present invention may also be applied to the transverse steel bar, and the fingerprint modules on the adjacent transverse steel bars are connected and fixed through a first support connecting bar 7 and a second support connecting bar 8. When the fingerprint module and the first support connecting rod or the second support connecting rod are meshed, the formed integral structure which has the positioning and fixing effects on the steel bar can be regarded as a rigid frame.
Preferably, the prism face that fingerprint module and joint support pole one 7 or two 8 support connecting rods contacted is equipped with the preformed hole, and adjacent row's fingerprint module inserts through support connecting rod one 7 and connects fixedly after corresponding preformed hole, and adjacent row's fingerprint module inserts through support connecting rod two 8 and connects fixedly after its corresponding preformed hole.
Preferably, when the first fingerprint module and the second fingerprint module are buckled, a group of positioning holes are symmetrically arranged on the plug-in units and the slots on two sides of the module and are vertically arranged along the longitudinal direction of the steel bar, and the first fingerprint module and the second fingerprint module are integrated through screws to achieve the effect of fixing the modules.
Preferably, when two liang of mutual lock in groups of first fingerprint module and second fingerprint module, the inseparable interlock of rib female rib line and reinforcing bar cross rib in the fingerprint module recess, the rib interlock is indulged to rib female rib line and reinforcing bar to the recess both sides, and fingerprint module and reinforcing bar form face contact, and the atress is even when making fingerprint module bear the reinforcing bar load, prevents the effect of reinforcing bar rotation, displacement. As shown in fig. 7, in the XOY two-dimensional plane coordinate system, the angle θ between the starting point P of the rib of the transverse rib of the reinforcing steel bar section and the X axis is constant. The reinforcing steel bar section in the prefabricated part is completely fixed, namely, in a three-dimensional space coordinate system, the reinforcing steel bar cannot bend, move and rotate along the X axis, the Y axis and the Z axis.
Preferably, the same interval department sets up the fingerprint module of lock on single reinforcing bar, realizes supporting fixed single reinforcing bar and prevents the effect of reinforcing bar longitudinal movement, prevents reinforcing bar bending and rotation simultaneously.
Preferably, the number of the cross rib female ribs in the grooves of the first fingerprint module and the second fingerprint module is greater than 2, and the distance from the bottom of the groove in the fingerprint module to the bottom of the fingerprint module is greater than the thickness of the protective layer of the steel bar in the concrete member.
Preferably, when the fingerprint module is located in the central area of the prefabricated part, the fingerprint module can be made of PVC plastic, and when the fingerprint module is located in the edge area of the concrete part, the fingerprint module is made of steel, high-performance concrete or aluminum alloy materials. The fingerprint module in the middle area of the member is of a material consumption type, plays the roles of positioning the reinforcing steel bar and protecting the reinforcing steel bar, and can adopt PVC plastics and concrete materials; the fingerprint module located in the edge area of the member must ensure accurate positioning and high durability of the steel bars in the concrete, and can be made of steel, high-performance concrete or aluminum alloy materials. The fingerprint module which is positioned at the edge of the section of the component and is in contact with the rigid template needs to be made of a high-strength concrete material or an aluminum alloy material so as to prevent the occurrence of a corrosion phenomenon.
Examples
In the following, the embodiment will be described with reference to a precast concrete beam, the size of the buckled fingerprint module provided by the precast concrete beam is 80mm by 40mm, and when viewed from fig. 3, the number of the female ribs of the transverse rib provided in the groove of the fingerprint module is determined according to the size of the fingerprint module and the size of the steel bar, and is generally not less than two. The width S of the fingerprint module is not less than 2 times of the diameter R of the steel bar, and the thickness C of the steel bar protective layer at the edge of the component is required to meet the specification. The vertical rib female rib is a square groove surface with a height H and a width L, and when the fingerprint module is buckled, the vertical rib female rib is tightly meshed with the steel bar vertical rib. Its specification and reinforcing bar indulge the rib phase-match, and H is the reinforcing bar indulges half of the rib height, and H, L all sets up to 2mm in this embodiment.
As shown in fig. 6, in the longitudinal section sketch map of the precast concrete roof beam of arranging longitudinal reinforcement, use and predetermine the three-layer reinforcing bar as an example, behind each fingerprint module lock in the component section, through set up corresponding preformed hole in the fingerprint module side, two support connecting rods between the longitudinal reinforcement of adjacent row are fixed with fingerprint module through corresponding preformed hole, two adoption steel of support connecting rod in this embodiment, the diameter of preformed hole, specification and joint support's such as the degree of depth diameter, specification phase-match such as length, the diameter of preformed hole and joint support sets up to 5mm, the preformed hole degree of depth sets up to 10mm, vertical joint support length sets up to 50mm, transverse connection supports and sets up to 100 mm. And at the fingerprint module positioned at the construction edge, the fingerprint module is fixedly connected with a rigid template arranged outside the prefabricated part by adopting a detachable screw. The interval of the rigid frames may be set to 200mm near both end edges of the prefabricated parts; in the middle part of the prefabricated part, the rigid frame can replace part of stirrups, and the distance can be set to 1000 mm. The reserved exposed steel bars in the component connection area are connected through the sleeve, when the connection is carried out, the steel bars distributed in the first part of prefabricated components and the second part of prefabricated components are fixed and accurately positioned by adopting the rigid frame, and the rib pattern starting points P of the reserved exposed steel bar connection section of the first part of components and the rib pattern starting points P' of the reserved exposed steel bar connection section of the second part of components are located at the same position when projected to the horizontal plane, so that the accurate connection of the steel bars can be ensured. When the first part of prefabricated parts and the second part of prefabricated parts are fixedly connected through the reserved exposed connecting sections of the longitudinal steel bars, the ends of the reserved exposed steel bar connecting sections are polished into transverse threads, and the sleeves are rotated to enter the prefabricated part reserved exposed steel bar transverse thread connecting sections. The starting point Q of the transverse thread at the end part of the reserved exposed steel bar connecting section of the first part of component and the starting point Q 'of the transverse thread at the end part of the reserved exposed steel bar connecting section of the first part of component are positioned on the same horizontal line, the distance D between the Q and the Q' is an integral multiple of the distance D between two adjacent threads of the sleeve, and during connection, the sleeve is rotated from the reserved exposed steel bar connecting section of the first part of prefabricated component to enter the reserved exposed steel bar connecting section of the second part of prefabricated component, so that accurate sleeve connection of the reserved steel bars of the two parts of prefabricated.
Claims (2)
1. A fingerprint device and a method for accurately positioning a steel bar comprise a fingerprint module unit and a supporting and connecting unit, and are characterized in that the fingerprint module unit comprises a plurality of fingerprint modules which are arranged in N rows and M columns at the same height, the fingerprint modules in adjacent rows and adjacent columns are fixedly connected through the supporting and connecting unit, the fingerprint modules are formed by mutually embedding a first fingerprint module (4) and a second fingerprint module (5), grooves (43) extending from the lower end surface to the upper end surface are formed in one surface, which is contacted with the first fingerprint module (4) and the second fingerprint module (5), of the two grooves (43) are mutually butted to form a steel bar channel penetrating through the upper end surface and the lower end surface of the fingerprint modules, transverse rib female ribs (12) matched with transverse ribs (1) of the steel bar and longitudinal rib female ribs (13) matched with longitudinal ribs (2) of the steel bar are arranged on the inner surface of the grooves (43), the end face, contacted with the first fingerprint module (4) and the second fingerprint module (5), of the first fingerprint module (4) is further provided with a plug-in (41) and a slot (42) which can be embedded into each other, the plug-in (41) and the slot (42) are respectively arranged on two sides of the groove (43), the plug-in (41) on the first fingerprint module (4) and the slot (42) on the second fingerprint module (5) are provided with positioning holes (61) which can be aligned with each other, and the first fingerprint module (4) and the second fingerprint module (5) are locked and fixed through screws (6) inserted into the positioning holes (61); the supporting and connecting unit comprises a first supporting and connecting rod (7) or a second supporting and connecting rod (8), the fingerprint modules in adjacent rows are fixedly connected through the first supporting and connecting rod (7), and the fingerprint modules in adjacent columns are fixedly connected through the second supporting and connecting rod (8).
2. The device and the method for accurately positioning the fingerprints of the steel bars as claimed in claim 1, wherein the fingerprint module units in the 1 st and nth rows and the 1 st and mth columns are detachably connected and fixed with a rigid template (9) through fasteners, the rigid template (9) encloses and forms a rectangular frame, the fingerprint module units, the supporting and connecting units and the modules form a rigid frame, and the reserved exposed connecting steel bars of the adjacent rigid frames are connected and fixed through sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011344069.8A CN112411886A (en) | 2020-11-26 | 2020-11-26 | Device and method for accurately positioning fingerprints on steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011344069.8A CN112411886A (en) | 2020-11-26 | 2020-11-26 | Device and method for accurately positioning fingerprints on steel bars |
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| Publication Number | Publication Date |
|---|---|
| CN112411886A true CN112411886A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011344069.8A Pending CN112411886A (en) | 2020-11-26 | 2020-11-26 | Device and method for accurately positioning fingerprints on steel bars |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116464220A (en) * | 2023-05-22 | 2023-07-21 | 领航建工(杭州)有限公司 | High-strength steel bar and installation and construction method thereof |
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| KR100754275B1 (en) * | 2007-05-10 | 2007-09-03 | (주)한터인종합건축사사무소 | Structure of steel framed reinforced concrete construction for builing |
| CN100339543C (en) * | 2006-03-07 | 2007-09-26 | 朱秦江 | Precise positioning system for steel bars of composite thermal-insulation concrete building and construction method thereof |
| CN205276695U (en) * | 2016-01-08 | 2016-06-01 | 金陵科技学院 | Reinforcing bar quick -connect machanism |
| CN205558046U (en) * | 2015-12-25 | 2016-09-07 | 中民筑友有限公司 | Bar reinforcement positioning device |
| CN208072780U (en) * | 2018-01-26 | 2018-11-09 | 中国建筑第七工程局有限公司 | The cast-in-place articulamentum reserved steel bar positioning device of assembled architecture |
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2020
- 2020-11-26 CN CN202011344069.8A patent/CN112411886A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339543C (en) * | 2006-03-07 | 2007-09-26 | 朱秦江 | Precise positioning system for steel bars of composite thermal-insulation concrete building and construction method thereof |
| KR100754275B1 (en) * | 2007-05-10 | 2007-09-03 | (주)한터인종합건축사사무소 | Structure of steel framed reinforced concrete construction for builing |
| CN205558046U (en) * | 2015-12-25 | 2016-09-07 | 中民筑友有限公司 | Bar reinforcement positioning device |
| CN205276695U (en) * | 2016-01-08 | 2016-06-01 | 金陵科技学院 | Reinforcing bar quick -connect machanism |
| CN208072780U (en) * | 2018-01-26 | 2018-11-09 | 中国建筑第七工程局有限公司 | The cast-in-place articulamentum reserved steel bar positioning device of assembled architecture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116464220A (en) * | 2023-05-22 | 2023-07-21 | 领航建工(杭州)有限公司 | High-strength steel bar and installation and construction method thereof |
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