CN211897899U - Main pier tie beam suspension type formwork support system - Google Patents
Main pier tie beam suspension type formwork support system Download PDFInfo
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- CN211897899U CN211897899U CN202020377535.1U CN202020377535U CN211897899U CN 211897899 U CN211897899 U CN 211897899U CN 202020377535 U CN202020377535 U CN 202020377535U CN 211897899 U CN211897899 U CN 211897899U
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Abstract
The utility model discloses a main pier tie beam suspension type formwork support system, which comprises a plurality of Bailey beams arranged between the tops of pier studs on two sides, wherein the Bailey beams are connected with a plurality of downward suspended finish rolling deformed steel bars, and the lower ends of the finish rolling deformed steel bars are connected with suspended formwork supports; the top of the Bailey beam is provided with a shoulder pole beam perpendicular to the length direction of the Bailey beam, the finish-rolled deformed steel bar is connected to the shoulder pole beam through a center-penetrating jack, and a center-penetrating pressure sensor is arranged on the finish-rolled deformed steel bar; and an axial force meter is arranged below the Bailey beam. The utility model has the characteristics of deformation control is convenient with coordinating, and the potential safety hazard is little, and construction quality is high.
Description
Technical Field
The utility model relates to a main mound tie beam formwork support system, especially a main mound tie beam suspension type formwork support system.
Background
When the high pier tie beam is constructed, because the pier stud is too high, the engineering quantity of the floor stand is too large, the danger coefficient is too high, and the construction cost control is not facilitated. Therefore, the corbels are usually embedded in the main piers for construction, but because the number of embedded parts is large, and the embedded steel boxes can cut off the main reinforcements of the piers, the construction potential safety hazard is large.
In the prior art, after corbels are embedded in the pier stud, the common construction is high-altitude operation construction by means of tower cranes and manual cooperation, the construction operation is slow, the utilization rate of machines is low, the danger coefficient of the high-altitude operation is high, the safety cannot be guaranteed, and the corbel embedded parts are arranged to block main ribs of the pier stud and damage the main ribs of the pier stud to a certain extent.
The suspended formwork support is a novel support system, and overcomes the defects of the traditional floor support and the embedded bracket support. However, in the practical application process, there still exist some technical problems, wherein the suspended formwork support is mainly a rigid-flexible system, and the system has a deformation problem in the tie beam casting process, and after the existing suspended formwork support deforms, it is difficult to monitor and deform in coordination, which easily causes a safety hazard and affects the construction quality, so that this is a key reason that hinders the wide application of the suspended formwork support.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to, a main mound straining beam suspension type formwork support system. The utility model has the characteristics of deformation control is convenient with coordinating, and the potential safety hazard is little, and construction quality is high.
The technical scheme of the utility model: a main pier tie beam suspension type template bracket system comprises a plurality of Bailey beams arranged between the tops of pier studs on two sides, wherein the Bailey beams are connected with a plurality of downward-suspended finish-rolled deformed steels, and the lower ends of the finish-rolled deformed steels are connected with suspended template brackets; the top of the Bailey beam is provided with a shoulder pole beam perpendicular to the length direction of the Bailey beam, the finish-rolled deformed steel bar is connected to the shoulder pole beam through a center-penetrating jack, and a center-penetrating pressure sensor is arranged on the finish-rolled deformed steel bar; and an axial force meter is arranged below the Bailey beam.
According to the main pier tie beam suspension type formwork support system, the plurality of bearing beams parallel to the shoulder pole beam are arranged below the formwork support, the finish-rolled deformed steel bar downwards penetrates through the bearing beams and then is connected to the bearing beams, double-nut lifting points are arranged on the finish-rolled deformed steel bar below the bearing beams, and steel base plates are arranged between the double-nut lifting points and the bearing beams.
In the main pier tie beam suspension type formwork support system, the bearing beam is double-spliced I-shaped steel.
In the main pier tie beam suspension type formwork support system, the upper side and the lower side of the bailey beam are respectively provided with the reinforcing chord along the length direction.
In the main pier tie beam suspension type formwork support system, the flat-cushion sleeper beam is arranged between the lower parts of the two ends of the bailey beam and the top of the pier stud.
In the main pier tie beam suspension type formwork support system, the formwork support consists of the lower layer beam and the upper layer beam which are arranged in a groined shape.
The utility model has the advantages that:
the utility model discloses a be connected through the finish rolling screw-thread steel between template support and the bailey roof beam, because the finish rolling screw-thread steel is used as elastic support, consequently, the atress distribution is more even, and in the tie beam pouring process, the support is whole to be forced to downwarp, and not part downwarp, and the atress is more even, and the potential safety hazard is littleer, and tie beam construction quality is higher; and simultaneously, the utility model discloses an install punching pressure sensor and axial force meter on finish rolling screw-thread steel and bailey roof beam respectively, in the work progress, can carry out real-time supervision to the atress size of finish rolling screw-thread steel and entire system's lower deflection deformation volume, unusual back appears in the monitoring, can adjust the elasticity of the finish rolling screw-thread steel that corresponds in real time through the punching jack, perhaps carry out more detailed adjustment through the mode of pause construction, deformation monitoring and the convenient advantage of coordination have, the security of construction has been improved greatly.
The utility model is suitable for a bridge tie beam construction that tie beam height is more than or equal to 30m, tie beam length-width ratio is less than or equal to 3, the seismic fortification intensity is less than or equal to 8 degrees.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a top view of the formwork support.
Description of reference numerals: 1-pier stud, 2-Bailey beam, 3-finish-rolled deformed steel bar, 4-template bracket, 5-shoulder beam, 6-through jack, 7-through pressure sensor, 8-axle dynamometer, 9-bearing beam, 10-double nut hoisting point, 11-steel backing plate, 12-reinforcing chord, 13-flat bolster, 14-lower beam and 15-upper beam.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
The embodiment of the utility model provides a:
the utility model discloses the concrete implementation bridge is plain grand bridge down, is located plain village under the pond town of cupular side county of Guizhou province, and plain gorge under the bridge stridees across, and the highway is four lanes of disconnect-type, and the bridge floor width is 12.25m, and left and right width is 3x 30m + (85 m +160m +85 m) +4 x 30m +5 x 30m prestressed concrete continuous rigid frame respectively, and the biggest mound height is 141.76m (right width 4# mound).
The main pier tie beam of the lower plain super large bridge is a single box and single chamber, the section width is 10 meters, the height is 4 meters, and the transverse bridge at the center line position of the tie beam is 11.25 meters. The tie beam is poured for 3 times, and a bottom plate is poured for 0.5m for the first time. The thickness of the top and bottom plates is 0.5m, and the thickness of the web plate is 0.5 m.
The specific main pier tie beam suspension type formwork support system is shown in attached figures 1-3, and comprises 3 groups of Bailey beams 2 arranged between the tops of pier studs 1 on two sides, wherein the Bailey beams 2 are connected with 18 downward suspended 32# finish rolled deformed steel bars 3, each group of Bailey beams 2 comprises 6 Bailey beams which are evenly distributed on two sides of the Bailey beams 2, the lower ends of the finish rolled deformed steel bars 3 are connected with suspended formwork supports 4, each formwork support 4 comprises lower layer beams 14 and upper layer beams 15 which are arranged in a # -shape, the lower layer beams 14 are 145a I-beams, and the upper layer beams 15 are 125a I-beams; the top of the Bailey beam 2 is provided with a carrying pole beam 5 vertical to the length direction of the Bailey beam 2, the carrying pole beam 5 adopts a double-spliced 25# channel steel, the finish rolling deformed steel bar 3 is connected to the carrying pole beam 5 through a penetrating jack 6, and the finish rolling deformed steel bar 3 is provided with a JMZX-3XXX series penetrating pressure sensor 7; an axial force meter 8 is arranged below the Bailey beam 2.
Preferably, a plurality of bearing beams 9 parallel to the carrying pole beam 5 are arranged below the template support 4, the bearing beams 9 are 45# double-spliced I-shaped steel, the finish-rolled deformed steel bar 3 downwards penetrates through the bearing beams 9 and then is connected to the bearing beams 9, double-nut lifting points 10 are arranged on the finish-rolled deformed steel bar 3 below the bearing beams 9, and a 30mm steel base plate 11 is arranged between the double-nut lifting points 10 and the bearing beams 9.
Preferably, the upper side and the lower side of the beret beam 2 are provided with reinforcing chords 12 along the length direction.
Preferably, a flat bolster beam 13 is arranged between the lower part of the two ends of the Bailey beam 2 and the top of the pier stud 1.
In the construction process, as the whole structure system is a floating system and the bracket is easy to turn over, the bracket must be poured from the middle to two sides in the pouring process to avoid side turning; meanwhile, before pouring, the superposed deflection of the support system is calculated in advance, and the support is improved according to the deflection. The utility model discloses an in the concrete embodiment case, the stack amount of deflection that the calculation obtained is 45.18mm, and bottom plate reinforcing bar protective layer thickness is 30mm, before the tie beam is pour, has carried out the improvement earlier with the template support.
The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. The utility model provides a main mound tie beam suspension type formwork support system which characterized in that: the device comprises a plurality of Bailey beams (2) arranged between the tops of pier studs (1) on two sides, wherein a plurality of downward-suspended finish-rolled deformed steels (3) are connected to the Bailey beams (2), and the lower ends of the finish-rolled deformed steels (3) are connected with suspended template supports (4); a carrying pole beam (5) perpendicular to the length direction of the Bailey beam (2) is arranged at the top of the Bailey beam (2), the finish-rolled deformed steel bar (3) is connected to the carrying pole beam (5) through a center-penetrating jack (6), and a center-penetrating pressure sensor (7) is arranged on the finish-rolled deformed steel bar (3); an axial force meter (8) is arranged below the Bailey beam (2).
2. The main pier tie beam suspended formwork racking system of claim 1, wherein: the special-shaped formwork support is characterized in that a plurality of bearing beams (9) parallel to the carrying pole beam (5) are arranged below the formwork support (4), the finish-rolled deformed steel bar (3) penetrates through the bearing beams (9) downwards and then is connected to the bearing beams (9), double-nut lifting points (10) are arranged on the finish-rolled deformed steel bar (3) below the bearing beams (9), and a steel base plate (11) is arranged between the double-nut lifting points (10) and the bearing beams (9).
3. The main pier tie beam suspended formwork racking system of claim 2, wherein: the bearing beam (9) is double-spliced I-shaped steel.
4. The main pier tie beam suspended formwork racking system of claim 1, wherein: and the upper side and the lower side of the Bailey beam (2) are provided with reinforcing chords (12) along the length direction.
5. The main pier tie beam suspended formwork racking system of claim 1, wherein: and a flat-cushion sleeper beam (13) is arranged between the lower parts of the two ends of the Bailey beam (2) and the top of the pier stud (1).
6. The main pier tie beam suspended formwork racking system of claim 1, wherein: the template bracket (4) is composed of a lower layer beam (14) and an upper layer beam (15) which are arranged in a groined shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020377535.1U CN211897899U (en) | 2020-03-23 | 2020-03-23 | Main pier tie beam suspension type formwork support system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020377535.1U CN211897899U (en) | 2020-03-23 | 2020-03-23 | Main pier tie beam suspension type formwork support system |
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| CN211897899U true CN211897899U (en) | 2020-11-10 |
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| CN202020377535.1U Active CN211897899U (en) | 2020-03-23 | 2020-03-23 | Main pier tie beam suspension type formwork support system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726409A (en) * | 2020-12-29 | 2021-04-30 | 中铁一局集团有限公司 | Hoisting device for bridge water surface pile tie beam and construction method thereof |
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2020
- 2020-03-23 CN CN202020377535.1U patent/CN211897899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726409A (en) * | 2020-12-29 | 2021-04-30 | 中铁一局集团有限公司 | Hoisting device for bridge water surface pile tie beam and construction method thereof |
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