CN217303964U - A levelling point device that is used for linear measurement during cantilever to pour bridge construction - Google Patents
A levelling point device that is used for linear measurement during cantilever to pour bridge construction Download PDFInfo
- Publication number
- CN217303964U CN217303964U CN202221322093.6U CN202221322093U CN217303964U CN 217303964 U CN217303964 U CN 217303964U CN 202221322093 U CN202221322093 U CN 202221322093U CN 217303964 U CN217303964 U CN 217303964U
- Authority
- CN
- China
- Prior art keywords
- screw
- nail
- loop bar
- screw rod
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model discloses a horizontal point device that is used for linear measurement during cantilever beam construction bridge construction, including special system level nail, increase loop bar and screw loop bar, the screw loop bar is through welding the ear welding on the reinforcing bar in the roof beam, it twists soon on screw loop bar surface screw to increase the loop bar, the screw rod of special system level nail passes and increases in the loop bar first screw hole and twist soon in screw loop bar second threaded hole inside. The utility model discloses the device has both solved traditional levelling point and has surveyd the nail and bury the elevation low excessively underground, often is buried the problem of concrete by whole when concreting, has solved traditional levelling point again and has surveyed the nail and bury the elevation too high underground to do not benefit to the problem of long-term storage, this utility model device has sufficient measurement accuracy simultaneously, and engineering using value is higher.
Description
Technical Field
The utility model relates to a level point device that is used for linear measurement during cantilever beam pouring bridge construction belongs to bridge detection technology field.
Background
The cantilever casting construction method is a very important and common construction method for a bridge, the cantilever casting construction is carried out by beam sections, due to the influence of factors such as structural parameters, construction process control and the like, the difference between the actual construction state and the ideal construction state of the bridge structure is inevitably caused along with the continuous increase of the span, so that the condition that the actual linear elevation of a beam body is not consistent with the theory is generated, the linear elevation of the beam body is required to be actually measured in the construction process for carrying out data analysis for adjusting the elevation of the vertical formwork in the next stage, the observation of the linear elevation requires that a leveling point observation nail is arranged at the foremost end of the beam section to be cast in advance, and the arrangement quality of the leveling point observation nail directly influences the accuracy of an actual measurement value.
The following problems often occur when data are collected by using the arranged leveling point observation nails at present:
1. the leveling point observation nail is buried the elevation and is crossed lowly, often can bury the leveling point observation nail whole when concreting, and lead to the data loss after the beam section concrete placement, can't compare with the data before concreting.
2. The leveling point observation nail is too high in buried elevation and not beneficial to long-term storage, and the leveling point observation nail arranged slightly can be worn and deformed, and can be damaged due to the fact that the leveling point observation nail hinders worker construction or the large-scale instrument and equipment is transferred seriously. The level point observes the damage of the nail, and directly influences the adjustment of the vertical mold elevation of the next stage, and finally influences the prediction and analysis of the ideal bridge forming state.
Accordingly, those skilled in the art have provided a leveling point device for line measurement during cast-in-cantilever bridge construction to solve the problems set forth in the background art as described above.
Disclosure of Invention
To the above-mentioned levelling point problem that exists in the linear control of cast-in-cantilever bridge, the utility model aims at providing a levelling point device that is used for linear measurement during the cast-in-cantilever bridge construction.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a leveling point device that is arranged in cantilever to pour bridge linear measurement during construction, a leveling point device that is arranged in cantilever to pour bridge during construction includes purpose-built level nail, increases loop bar and screw loop bar, the screw loop bar is through welding the ear welding on the reinforcing bar in the roof beam, increase the loop bar and twist soon on screw loop bar surface screw thread, increase the internal diameter of first screw hole in the loop bar and adopt clearance fit design with the diameter of screw loop bar, the screw rod of purpose-built level nail passes and increases in the loop bar that first screw hole is twisted inside the second screw hole in the screw loop bar, and the screw rod diameter of purpose-built level nail and second screw hole internal diameter adopt clearance fit design in the screw loop bar.
Preferably, the specially-made level nail comprises a nail cap, a cross groove, a screw and scale marks, wherein the cross groove is carved in the center of the top surface of the nail cap, and the scale marks are carved on the screw of the specially-made level nail.
Preferably, the heightening sleeve rod comprises a first rod body and a first threaded hole, the first threaded hole is a through hole, the upper portion of the heightening sleeve rod is in a circular truncated cone shape, and the lower portion of the heightening sleeve rod is in a cylindrical shape.
As preferred, the screw sleeve pole is including welding ear, the second body of rod, the second screw hole, and the surface upper portion of the second body of rod is carved with the screw thread, weld the ear and weld in the second body of rod surface homonymy, and weld the ear and be located surface screw thread below, and its quantity is 2, the second screw hole is the blind hole, and the degree of depth of second screw hole is greater than the length of screw rod.
The utility model has the beneficial technical effect that the utility model provides a leveling point device for linear measurement during cantilever pouring bridge construction, at each construction measurement stage, make its length that exposes the thread bush through rotating special level nail keep same fixed numerical value, and guarantee that system water level nail top surface standard is higher than roof beam body top surface elevation, carry out linear measurement, the measurement is accomplished the back and is rotated special level nail in the opposite direction and make its top surface and roof beam body top surface coincidence or be less than roof beam body top surface to obtain effective protection to this leveling point device. Through the device, both solved traditional levelling point and observed that the nail buries the elevation underground and hang down excessively, often by the problem of whole buried concrete when concreting, solved again that traditional levelling point observes that the nail buries the elevation underground and too high to do not do benefit to the problem of long-term storage. The utility model discloses the device simple structure, processing preparation is convenient, and the installation of being convenient for does benefit to the protection, has sufficient measurement accuracy, has extremely strong engineering using value.
Drawings
Fig. 1 is a schematic view of the installation of a leveling point device for linear measurement during the construction of a cast-in-place cantilever bridge according to the present invention;
FIG. 2 is a schematic front view of a specially-made leveling pin in a leveling point device for line shape measurement during the construction of a cast-in-cantilever bridge provided by the present invention;
FIG. 3 is a schematic top view of a specially-made leveling pin used in a leveling point device for linear measurement during the construction of a cast-in-cantilever bridge provided by the present invention;
FIG. 4 is a schematic front view of a heightening sleeve in a leveling point device for line shape measurement during the construction of a cast-in-cantilever bridge provided by the present invention;
FIG. 5 is a schematic top view of a leveling device for line measurement during cast-in-cantilever bridge construction;
fig. 6 is a schematic front view of a threaded sleeve rod in a leveling point device for linear measurement during the construction of a cast-in-cantilever bridge provided by the present invention;
fig. 7 is a schematic top view of a threaded rod in a leveling device for line shape measurement during the construction of a cast-in-cantilever bridge according to the present invention;
the labeling matters in the figures are as follows: 1. specially manufacturing a leveling nail; 1-1, a nail cap; 1-2, cross grooves; 1-3, a screw; 1-4, scale mark; 2. heightening the sleeve rod; 2-1, a first rod body; 2-2, a first threaded hole; 3. a screw rod sleeve; 3-1, a second rod body; 3-2, a second threaded hole; 3-3, welding lugs; 4. and reinforcing steel bars in the beam.
Detailed Description
The technical solution of the present invention will be further clearly and completely described below with reference to the accompanying drawings and embodiments.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in figure 1, the utility model provides a pair of a leveling point device for linear measurement during cantilever pouring bridge construction, including purpose-built air nail 1, increase loop bar 2 and screw loop bar 3, screw loop bar 3 welds on reinforcing bar 4 in the roof beam through welding ear 3-3, increase loop bar 2 and twist soon on screw loop bar 3 surface screw, increase the internal diameter of first screw hole 2-2 in loop bar 2 and adopt clearance fit design with the diameter of screw loop bar 3, screw 1-3 of purpose-built air nail 1 passes and increases first screw hole 2-2 in loop bar 2 and twist soon inside second screw hole 3-2 in screw loop bar 3, and screw 1-3 diameter of purpose-built air nail 1 and second screw hole 3-2 internal diameter in screw loop bar 3 adopt clearance fit design.
As shown in figures 2 and 3, the specially-made level nail 1 comprises a nail cap 1-1, a cross groove 1-2, a screw rod 1-3 and scale marks 1-4, wherein the cross groove 1-2 is carved on the center of the top surface of the nail cap 1-1, and the scale marks 1-4 are carved on the screw rod 1-3 of the specially-made level nail 1.
As shown in fig. 4 and 5, the heightening sleeve rod 2 includes a first rod body 2-1 and a first threaded hole 2-2, the first threaded hole 2-2 is a through hole, the upper portion of the heightening sleeve rod 2 is in a shape of a circular truncated cone, and the lower portion of the heightening sleeve rod is in a shape of a cylinder.
As shown in fig. 6 and 7, the threaded sleeve rod 3 includes a second rod body 3-1, a second threaded hole 3-2, and welding lugs 3-3, wherein threads are engraved on the upper portion of the outer surface of the second rod body 3-1, the welding lugs 3-3 are welded on the same side of the outer surface of the second rod body 3-1, and the welding lugs 3-3 are located below the threads on the outer surface, and the number of the welding lugs is 2.
Before concrete of a beam section is poured, according to the requirement of a monitoring scheme, the leveling point device for linear measurement during the construction of the cantilever pouring bridge is arranged at the most front designated position of the beam section to be poured, firstly, the threaded sleeve rod 3 is welded on a steel bar 4 in the beam through the welding lugs 3-3, the threaded sleeve rod 3 is ensured to be vertical during welding, meanwhile, the top surface elevation of the threaded sleeve rod 3 is ensured to be lower than the top surface elevation of the concrete to be poured by the distance of at least one screw cap 1-1, the screw rods 1-3 of the special leveling nail 1 are screwed in the second threaded hole 3-2 in the threaded sleeve rod 3, the top surface elevation of the special leveling nail 1 is kept higher than the top surface elevation of the concrete to be poured, a certain scale value on the scale line 1-4 is kept just flush with the top surface of the threaded sleeve rod 3, the scale value is recorded, linear measurement before concrete pouring is carried out, and the linear measurement is finished, taking off the specially-made leveling nail 1, screwing the heightening sleeve rod 2 on the outer surface screw thread of the screw sleeve rod 3, ensuring that the top surface elevation of the heightening sleeve rod 2 is higher than the top surface elevation of concrete to be poured, screwing the screw rod 1-3 of the specially-made leveling nail 1 in the second screw hole 3-2 of the screw sleeve rod 3 through the first screw hole 2-2 in the heightening sleeve rod 2, after the concrete pouring is finished and before the concrete is finally poured, firstly taking off the specially-made leveling nail 1, then taking off the heightening sleeve rod 2, then screwing the screw rod 1-3 of the specially-made leveling nail 1 in the second screw hole 3-2 in the screw sleeve rod 3, keeping the top surface of the specially-made leveling nail 1 flush with or lower than the top surface of the beam body, in each later construction measurement stage, lifting the specially-made leveling nail 1 by rotating the specially-made leveling nail 1, keeping the length of the specially-made leveling nail 1 exposed out of the screw sleeve rod 3 the same as that in linear measurement before the pouring, at the moment, the scale value on the scale mark 1-4 recorded during linear measurement before pouring is just level with the top surface of the threaded sleeve rod 3, then linear measurement is carried out, and after the measurement is finished, the specially-made leveling nail 1 is rotated in the opposite direction to enable the top of the specially-made leveling nail to be level with the top surface of the beam body or lower than the top surface of the beam body, so that the leveling point device is effectively protected.
The present invention is not limited to the above preferred embodiments, and other various forms of products that can be obtained by anyone under the development of the present invention, and easily conceivable variations or replacements, the same or similar technical solutions as the present application, are within the scope of the present invention.
Claims (4)
1. The utility model provides a linear measuring levelling point device for during cantilever pouring bridge construction which characterized in that: including purpose-built level nail (1), increase loop bar (2) and screw rod (3), screw rod (3) are through welding ear (3-3) welding on reinforcing bar (4) in the roof beam, it revolves soon to increase loop bar (2) and revolves on screw rod (3) surface screw, increases in loop bar (2) the internal diameter of first screw hole (2-2) and the diameter of screw rod (3) and adopts clearance fit design, screw rod (1-3) of purpose-built level nail (1) pass and increase in loop bar (2) first screw hole (2-2) revolve twist in screw rod (3) inside second screw hole (3-2), screw rod (1-3) diameter and screw rod (3) in the screw rod (1-3) of purpose-built level nail (1) adopt clearance fit design with second screw hole (3-2) internal diameter.
2. The leveling point device for linear measurement during cast-in-place cantilever bridge construction of claim 1, wherein: the specially-made level nail (1) comprises a nail cap (1-1), a cross groove (1-2), a screw rod (1-3) and scale marks (1-4), wherein the cross groove (1-2) is carved on the center of the top surface of the nail cap (1-1), and the scale marks (1-4) are carved on the screw rod (1-3) of the specially-made level nail (1).
3. The leveling point device for line shape measurement during cast-in-place cantilever bridge construction of claim 1, wherein: heightening sleeve rod (2) comprises a first rod body (2-1) and a first threaded hole (2-2), the first threaded hole (2-2) is a through hole, the upper portion of heightening sleeve rod (2) is in a circular truncated cone shape, and the lower portion of heightening sleeve rod is in a cylindrical shape.
4. The leveling point device for linear measurement during cast-in-place cantilever bridge construction of claim 1, wherein: the threaded sleeve rod (3) comprises a second rod body (3-1), a second threaded hole (3-2) and welding lugs (3-3), threads are carved on the upper portion of the outer surface of the second rod body (3-1), the welding lugs (3-3) are welded on the same side of the outer surface of the second rod body (3-1), the welding lugs (3-3) are located below the outer surface threads, the number of the welding lugs is 2, the second threaded hole (3-2) is a blind hole, and the depth of the second threaded hole (3-2) is larger than the length of the screw rod (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221322093.6U CN217303964U (en) | 2022-05-30 | 2022-05-30 | A levelling point device that is used for linear measurement during cantilever to pour bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221322093.6U CN217303964U (en) | 2022-05-30 | 2022-05-30 | A levelling point device that is used for linear measurement during cantilever to pour bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217303964U true CN217303964U (en) | 2022-08-26 |
Family
ID=82918097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221322093.6U Active CN217303964U (en) | 2022-05-30 | 2022-05-30 | A levelling point device that is used for linear measurement during cantilever to pour bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217303964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930927A (en) * | 2023-03-09 | 2023-04-07 | 中铁六局集团天津铁路建设有限公司 | Concrete bridge linear control measuring device |
-
2022
- 2022-05-30 CN CN202221322093.6U patent/CN217303964U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930927A (en) * | 2023-03-09 | 2023-04-07 | 中铁六局集团天津铁路建设有限公司 | Concrete bridge linear control measuring device |
| CN115930927B (en) * | 2023-03-09 | 2023-05-16 | 中铁六局集团天津铁路建设有限公司 | Linear control measuring device for concrete bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207003425U (en) | A kind of borehole filling pile cage of reinforcement stopping means | |
| CN105040717B (en) | Foundation bolt fixing support and installation method | |
| CN217303964U (en) | A levelling point device that is used for linear measurement during cantilever to pour bridge construction | |
| CN102493471B (en) | Suspending installation construction process method of structural foot margin anchor bolt | |
| CN109518980B (en) | Device for adjusting hoisting elevation and verticality of fabricated concrete structure column and construction method thereof | |
| CN208187851U (en) | A kind of device for realizing steel tube confined concrete test specimen axis pressure | |
| CN113863166A (en) | Reverse construction method for mounting support after rotating | |
| CN111910696A (en) | Hollow support pile stress meter fixing structure and mounting method thereof | |
| CN109211464B (en) | Osmometer embedding device and method | |
| CN107891131A (en) | A kind of round billet continuous casting machine crystallizer centralising device and its centering method | |
| CN114152242A (en) | Dam horizontal displacement monitoring vertical line protection pipe pre-embedding construction method | |
| CN208201666U (en) | Flexural pivot locating framework accurate positioning device under swivel bridges | |
| CN210829290U (en) | Device for controlling slab staggering amount of shield tunnel capping block | |
| CN207642260U (en) | A kind of round billet continuous casting machine crystallizer centralising device | |
| CN219794029U (en) | Device for measuring embedding depth of underwater pouring concrete conduit | |
| CN206916632U (en) | The T-shaped just structure line style monitoring point mounting structure of cantilever | |
| CN113250465A (en) | A cross scale for pile foundation steel reinforcement cage center location | |
| CN205593438U (en) | Section size detection ruler | |
| CN219694183U (en) | Special prism device for automatic high-speed monitoring of total station | |
| CN216558965U (en) | Install at job site fixed survey observation device | |
| CN218425480U (en) | Device for measuring immersion depth of immersion type water gap | |
| CN108411794A (en) | Flexural pivot locating framework accurate positioning device and localization method under swivel bridges | |
| CN212388621U (en) | Hollow support pile stress meter fixing structure | |
| CN205421871U (en) | On --spot elevation measuring tool of construction | |
| CN202925480U (en) | Reinforced steel truss lower node positioning die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |