CN223824025U - A non-ground-mounted formwork support frame for cast-in-place concrete beams - Google Patents
A non-ground-mounted formwork support frame for cast-in-place concrete beamsInfo
- Publication number
- CN223824025U CN223824025U CN202520010534.6U CN202520010534U CN223824025U CN 223824025 U CN223824025 U CN 223824025U CN 202520010534 U CN202520010534 U CN 202520010534U CN 223824025 U CN223824025 U CN 223824025U
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- steel pipe
- pipe column
- top surface
- support frame
- long steel
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Abstract
The utility model discloses a non-floor type formwork support frame for cast-in-situ concrete beams, which is provided with two steel pipe columns with different lengths, namely a through long steel pipe column and a half long steel pipe column, wherein the through long steel pipe column is welded on each bearing platform, a triangular steel truss girder is erected between two adjacent bearing platforms, the half long steel pipe column is erected at the top node of the triangular steel truss girder, the top surface of the half long steel pipe column is at the same height as the top surface of the through long steel pipe column, the top surface of the half long steel pipe column and the top surface of the through long steel pipe column are used as fulcrums, a dump block is arranged, a transverse bridge bearing beam and a parallel bridge bearing beam are sequentially arranged upwards from the dump block, and a distribution beam is arranged on the transverse bridge of the top surface of the bearing beam, so that the non-floor type formwork support frame is formed. The utility model does not need to additionally arrange temporary buttresses or treat bridge site foundation, and is particularly suitable for cast-in-situ construction of concrete beams with poor bridge site foundation and high treatment cost.
Description
Technical Field
The utility model relates to the technical field of construction of a concrete beam with a bridge upper structure, in particular to a non-floor type formwork support frame for cast-in-situ concrete beams.
Background
The cast-in-place construction process of the bridge upper structure concrete beam is common and mature, when the bridge is positioned on a farmland, a swamp land and other soft soil foundations, if the upper structure concrete cast-in-place template support frame adopts a full-hall type support, the soft soil foundations under the bridge are required to be treated, but the treatment difficulty is high, the treatment cost is high, the risk of foundation settlement exists during construction, and if the bridge column type support frame is adopted, when the bridge span exceeds 20m, temporary buttresses are required to be arranged in the bridge span, and the safety risks of high difficulty, high cost and easy settlement exist in the process of arranging the temporary buttresses on the soft soil foundations. Therefore, under the geological condition based on the complex bridge level, the traditional full-hall type template support frame and the beam column type template support frame have certain technical defects and safety risks.
Disclosure of utility model
The utility model provides a non-floor type template support frame for cast-in-situ concrete beams, which is used for avoiding the defects in the prior art, so that the non-floor type template support frame can adapt to cast-in-situ construction of the concrete beams of the upper structure of the bridge under complex geological conditions, save the measure cost of foundation treatment of the template support frame or setting temporary buttresses, and eliminate the safety risk caused by sedimentation.
The utility model adopts the following technical scheme for solving the technical problems:
The utility model relates to a non-floor type formwork support frame for cast-in-situ concrete beams, which is characterized by comprising two steel pipe columns with different lengths, namely a through steel pipe column and a half steel pipe column, wherein the through steel pipe column and the half steel pipe column are fixedly welded on all bearing platforms by utilizing bearing platform embedded parts, a triangular steel truss girder is erected between two adjacent bearing platforms by utilizing the bearing platform embedded parts, the half steel pipe column is supported at the top node of the triangular steel truss girder, the top surface of the half steel pipe column is at the same height as the top surface of the through steel pipe column, the top surface of each half steel pipe column and the top surface of each through steel pipe column are used as fulcrums, a drop block is arranged on each fulcra, a bearing beam is arranged on the top surface transverse bridge of the drop block in the longitudinal direction, a bailey beam is arranged on the top surface of the bearing beam, and a distribution beam is arranged on the top surface transverse bridge of the bailey beam in the longitudinal direction, so that the non-floor type formwork support frame is formed.
The non-floor type formwork support frame for the concrete beam cast-in-situ is also characterized in that a through-hole pull rod is used between the through-length steel pipe upright post and the pier body to form a wall connecting piece for fixing in order to increase the stability of the formwork support frame, and a connecting system is arranged between the adjacent steel pipe upright posts in the forward bridge direction and the transverse bridge direction to enable all the steel pipe upright posts to form a whole.
The non-floor type formwork support frame for the concrete beam cast-in-situ is characterized in that the structural form of the triangular steel truss beam is that an upper chord member and a lower chord member are parallel, web members are welded between the upper chord member and the lower chord member by utilizing node plates, the web members are alternately arranged in different inclined directions to form the triangular steel truss beam which is inverted in whole, stiffening plates are locally welded on steel webs of the upper chord member and the lower chord member to prevent buckling of flange areas, and a scissor brace is arranged between each group of triangular steel truss beams in a transverse bridge to increase transverse connection.
The non-floor type formwork support frame for the concrete beam cast-in-situ is characterized in that the half-length steel tube upright post is welded and fixed with a gusset plate of an upper chord in the triangular steel truss girder.
The non-floor type formwork support frame for the concrete beam cast-in-situ is also characterized in that the punching pull rod adopts finish rolling screw steel and matched fasteners, and is connected and fixed with a through long steel pipe column through a reserved hole in the pier body.
Compared with the prior art, the utility model has the beneficial effects that:
1. The non-floor type template support frame does not need to process a bridge foundation, does not need to arrange temporary piers, saves construction cost, and is suitable for cast-in-situ construction of concrete beams with poor bridge geological foundations.
2. The non-floor type template support frame has novel structure and definite force transmission path, and the characteristics of large spanning capacity and strong node bearing capacity of the triangular steel truss girder are utilized to support all the born load on bearing platforms at two sides without considering the influence of foundation factors on the template support frame, so that the structure is stable and reliable, the sedimentation problem is avoided, and the safety risk caused by sedimentation is eliminated.
Drawings
FIG. 1 is a schematic elevation view of the present utility model;
FIG. 2 is a schematic diagram of a side elevational view of the present utility model;
In the drawing, the reference numerals comprise a bearing platform 1, a bearing platform embedded part 2, a through long steel pipe column 3, a triangular steel truss girder 4, a half long steel pipe column 5, a drop block 6, a bearing girder 7, a bailey girder 8, a distribution girder 9, a through pull rod 10, a connection system 11, a scissor brace 12, a pier body 13, a concrete girder 14, an upper chord 401, a lower chord 402, a web member 403, a node plate 404 and a stiffening plate 405.
Detailed Description
The utility model is that
Referring to fig. 1 and 2, in this embodiment, two steel pipe columns with different lengths are provided for a concrete beam cast-in-situ non-floor type formwork support frame, namely a through steel pipe column 3 and a half steel pipe column 5, the through steel pipe column 3 is fixedly welded on each bearing platform 1 by utilizing a bearing platform embedded part 2, a triangular steel truss girder 4 is erected between two adjacent groups of bearing platforms 1 by utilizing the bearing platform embedded part 2, the half steel pipe column 5 is supported at the top node of the triangular steel truss girder 4, the top surface of the half steel pipe column 5 is at the same height as the top surface of the through steel pipe column 3, the top surface of each half steel pipe column 5 and the top surface of each through steel pipe column 3 are taken as fulcra, a unloading block 6 is arranged on each fulcra, a spandrel beam 7 is arranged on the top surface transverse bridge of the unloading block 6, a beret beam 8 is arranged on the top surface of the spandrel beam 7 along the bridge direction, and a distribution beam 9 is arranged on the top surface transverse bridge direction of the beret beam 8, so as to form the non-floor type formwork support frame.
The bearing platform embedded part 2 shown in fig. 1 is a pi-shaped member formed by welding steel bars and steel plates in a assembling mode, the structure is firm, the through-hole pull rod 10 is made of finish-rolled deformed steel bars and matched fasteners, and the through-hole pull rod 10 shown in fig. 1 is connected with and fixed with the through-long steel pipe stand column 3 through reserved holes in the pier body 13.
In this embodiment, in order to increase the stability of the formwork support frame, a wall connecting member is formed between the through-length steel pipe upright 3 and the pier body 13 by using a through-pull rod 10, a connecting system 11 is arranged between adjacent steel pipe upright in the forward and transverse directions to form a whole, the connecting system 11 is a truss structure formed by welding section steel and steel plates, and the end part of the connecting system 11 is provided with a lacing plate so as to be welded and connected with the through-length steel pipe upright 3 and the half-length steel pipe upright II 5.
The triangular steel truss girder 4 shown in fig. 1 is structurally characterized in that an upper chord member 401 and a lower chord member 402 are parallel members, web members 403 are welded between the upper chord member 401 and the lower chord member 402 by means of node plates 404, the web members 403 are alternately arranged in different inclined directions to form a triangular steel truss girder 4 which is inverted in an inverted W shape as a whole, stiffening plates 405 are locally welded on steel webs of the upper chord member 401 and the lower chord member 402, the stiffening plates 405 correspond to the positions of the node plates 404 to prevent buckling of flange areas, a scissor brace 12 is arranged between each group of triangular steel truss girders 4 in a transverse bridge direction to increase transverse connection, the half-length steel tube upright posts 5 are welded and fixed with the node plates of the upper chord member 401 in the triangular steel truss girder 4, the upper chord member 401, the lower chord member 402 and the web members 403 are welded into box section bars by adopting double-splice channel steel groups, and the node plates 404 are welded into box section bars by adopting steel plate groups to meet welding connection requirements of the bars.
The spandrel girder 7, the distributing beam 9, the beret girder 8, the punching pull rod 10 and the unloading block 6 in the embodiment are all commercial standardized products or shaped products, and are purchased according to the requirements.
In the concrete implementation, before the concrete pouring of a bearing platform 1, a prepared pi-shaped steel bar and a steel plate assembly welding bearing platform embedded part 2 are pre-embedded at a set position of the bearing platform 1, a through long steel pipe column 3 and a triangular steel truss girder 4 are manufactured according to the height and the span of a pier body 13, the through long steel pipe column 3 and the triangular steel truss girder 4 are welded and fixed on the bearing platform embedded part 2 by using lifting equipment, in order to prevent the overturning risk in the erecting process of a formwork support frame, a transverse bridge is installed in place, a transverse bridge connecting system 11 is installed along with and in place, a through-center pull rod 10 is fastened, a scissor support 12 between the triangular steel truss girders 4 is timely installed after each two triangular steel truss girders 4 are installed in place, a half long steel pipe column 5 is installed at a node at the top of the triangular steel truss girders 4, a transverse bridge connecting system 11 of the half long steel pipe column 5 is synchronously installed, a landing block 6 is placed on the top surfaces of the through-long steel pipe column 3 and the half long steel pipe column, a landing block 6 is placed on the top surface of the bridge, a transverse bridge is placed on the top surface of the bridge support frame 7, and a transverse bridge 8 is arranged along with the top surface of the bridge 8, and a vertical bridge 8 is arranged on the top surface of the bridge 8.
After the erection of the non-floor type formwork support frame for the cast-in-situ concrete beam in the embodiment is completed, the bearing capacity of the concrete beam is required to be pre-pressed according to the standard requirement, the concrete beam can be used after being qualified, and before the formwork support frame is dismantled, the unloading block 6 is firstly loosened to separate the spandrel girder 7, the bailey girder 8 and the distributing girder 9 above the unloading block from the bottom surface of the concrete beam 14, and each rod piece of the formwork support frame is dismantled from top to bottom in sequence.
Claims (5)
1. A non-floor type formwork support frame for cast-in-situ concrete beams is characterized in that two steel pipe columns with different lengths are arranged, namely a through long steel pipe column (3) and a half long steel pipe column (5), the through long steel pipe column (3) is fixedly welded on each bearing platform (1) by utilizing a bearing platform embedded part (2), a triangular steel truss beam (4) is erected between two adjacent groups of bearing platforms (1) by utilizing the bearing platform embedded part (2), the half long steel pipe column (5) is supported at a top node of the triangular steel truss beam (4), the top surface of the half long steel pipe column (5) is at the same height as the top surface of the through long steel pipe column (3), a drop block (6) is arranged on each pivot by utilizing the top surface of each half long steel pipe column (5) and the top surface of each through long steel pipe column (3), a bearing girder (7) is placed in the direction of the top surface bridge of each drop block (6), the top surface bridge of each bearing girder (7) is arranged along the bridge, and the top surface of each bearing girder (7) is arranged on the top surface bridge (8), so that a non-floor type formwork support frame (9) is formed.
2. The non-floor type formwork support frame for concrete beam cast-in-situ according to claim 1, wherein a wall connecting piece is formed between the through long steel pipe upright post (3) and the pier body (13) by using a through pull rod (10) for fixation, and a connecting system (11) is arranged between adjacent steel pipe upright posts in the forward bridge direction and the transverse bridge direction so that all the steel pipe upright posts are integrated.
3. The non-floor formwork support frame for concrete beam cast-in-situ is characterized in that the structural form of the triangular steel truss girder (4) is that an upper chord member (401) and a lower chord member (402) are parallel, web members (403) are welded between the upper chord member (401) and the lower chord member (402) by means of node plates (404), the web members (403) are alternately arranged in different oblique directions to form the triangular steel truss girder (4) which is integrally inverted in shape, stiffening plates (405) are locally welded on steel webs of the upper chord member (401) and the lower chord member (402) to prevent buckling of a flange area, and a scissor brace (12) is arranged between each group of triangular steel truss girders (4) in the transverse bridge direction to increase transverse connection.
4. The non-floor type formwork support frame for concrete beam cast-in-situ according to claim 3, wherein the half-length steel pipe upright post (5) is welded and fixed with a node plate of an upper chord (401) in the triangular steel truss beam (4).
5. The non-floor type formwork support frame for concrete beam cast-in-situ is characterized in that the through-core pull rod (10) adopts finish rolling screw steel and matched fasteners, and is connected and fixed with the through-length steel pipe upright post (3) through reserved holes in the pier body (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520010534.6U CN223824025U (en) | 2025-01-03 | 2025-01-03 | A non-ground-mounted formwork support frame for cast-in-place concrete beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520010534.6U CN223824025U (en) | 2025-01-03 | 2025-01-03 | A non-ground-mounted formwork support frame for cast-in-place concrete beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223824025U true CN223824025U (en) | 2026-01-23 |
Family
ID=98450346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520010534.6U Active CN223824025U (en) | 2025-01-03 | 2025-01-03 | A non-ground-mounted formwork support frame for cast-in-place concrete beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223824025U (en) |
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2025
- 2025-01-03 CN CN202520010534.6U patent/CN223824025U/en active Active
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