CN213896816U - Y-shaped support frame - Google Patents
Y-shaped support frame Download PDFInfo
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- CN213896816U CN213896816U CN202022809862.2U CN202022809862U CN213896816U CN 213896816 U CN213896816 U CN 213896816U CN 202022809862 U CN202022809862 U CN 202022809862U CN 213896816 U CN213896816 U CN 213896816U
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Abstract
The utility model discloses a Y-shaped support frame; the steel pipe concrete temporary buttresses on two sides of the main pier of the continuous box girder bridge and the temporary steel pipe supports additionally arranged on two sides of the pier body are welded and connected with the bearing platform, the pier stud embedded parts and the horizontal section steel to form a stable framework system; the support diagonal bracing section steel assembly is connected with the temporary buttress and the pier body embedded steel plate in a welding mode to form a Y-shaped support frame, the plane support area is widened, and conditions are created for continuous box girder 1# block cast-in-place construction. The utility model discloses utilize interim buttress of 0# piece steel pipe concrete and simple and easy shaped steel bracing to constitute Y type support frame, form spacious supporting plane, the construction of continuous box girder bridge 0# and 1# piece festival section is all cast-in-place to be accomplished on Y type support frame plane, for the equipment of hanging the basket provides spacious operation platform, it takes one time to assemble to hang the basket and takes one's place, the complicated ann's piece technology of hanging basket cantilever starting stage has been avoided, the efficiency is improved, the safety risk is reduced, the engineering quality has been ensured.
Description
Technical Field
The utility model relates to a field that construction is relevant, what specifically say relates to is a Y type support frame.
Background
In traffic engineering construction, a basket-hanging cantilever construction process is widely adopted for construction of continuous beam bridges across lines and rivers. Because of the safety needs of the cantilever construction process, before the construction of the cradle cantilever, pier beam temporary consolidation and temporary support measures are often adopted to resist the accidental unbalance loading influence in the cantilever process and achieve the purpose of reducing the safety risk, namely, the 0# block section is temporarily consolidated with the pier body (pouring reinforced concrete), and steel pipe (concrete) buttresses are adopted on two sides of the pier body to be supported on the bottom surface of the 0# block section, so that a temporary consolidation support structure is formed. The assembly of the cradle is generally carried out on the section of the 0# block, but often because the plane size of the 0# block is limited, the installation of the starting cradle usually adopts a stress main truss transverse dislocation (deviation) method or a single stress design main truss (only meeting the requirement of constructing the 1# block) to form the 1# section of the cradle cantilever construction, after the construction of the 1# block section is completed and enough assembly conditions are formed, the accurate and complete installation of the cradle can be completed through the complex processes of forward movement of the cradle, transverse movement of the cradle or the re-assembly of partial stress trusses after the removal of the cradle, and the like, so that the normal use requirement of the cradle is met.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a Y-shaped supporting frame; in construction, a Y-shaped support frame is formed by the 0# steel pipe concrete temporary buttress and the simple steel inclined strut to form a spacious support plane, construction of the 0# and 1# sections of the continuous box girder bridge is finished by casting on the plane of the Y-shaped support frame, a spacious operation platform is provided for assembly of the hanging basket, the hanging basket is assembled in place at one time, a complex assembling process of a hanging basket cantilever starting stage is avoided, the efficiency is improved, the safety risk is reduced, and the engineering quality is ensured.
The utility model is realized in such a way that a Y-shaped support frame is constructed, which is characterized in that; the main pier steel pipe concrete column temporary buttress and the steel pipe temporary supports additionally arranged on two sides of the pier body are welded and connected with the bearing platform, the pier column embedded part and the horizontal section steel to form a stable framework system; the support diagonal bracing section steel assembly is connected with the temporary buttress and the embedded steel plate of the pier body in a welding mode to form a Y-shaped support frame, the plane support area is widened, and conditions are created for construction of the 1# block.
The Y-shaped support frame is characterized in that the support frame is provided with a support frame; the support diagonal bracing steel component is made of 2I40b steel, the upper end of the support diagonal bracing steel component is connected with the transverse distribution beam, and the upper end of the transverse distribution beam is a longitudinal distribution beam.
The Y-shaped support frame is characterized in that the support frame is provided with a support frame; the transverse distribution beam is made of I40b steel, and the longitudinal distribution beam is made of I16 steel.
The Y-shaped support frame is characterized in that the support frame is provided with a support frame; the upper parts of the longitudinal distribution beams are steel pipe brackets with the diameter of 48mm, square wood with the specification of 10 multiplied by 10cm and plywood with the thickness of 18 mm.
The utility model has the advantages of as follows: the utility model provides a Y-shaped support frame through improvement; a No. 0 steel pipe concrete temporary buttress and a simple steel inclined strut (bracket) are welded to form a Y-shaped support frame system, and the support frame structure meets the safe bearing requirement through mechanical checking calculation; the method is characterized in that a main pier steel tube (concrete) column temporary buttress (the design of the embodiment is that a stand column is a phi 810 steel tube, the wall thickness is 20mm, and C50 expansion concrete is poured inside) is used as a bearing main body, a welded steel diagonal brace (corbel) is additionally arranged to form a Y-shaped support frame system, a pier body embedded part and a support frame system are welded to form a stable whole, and then the support frame system is subjected to non-elastic deformation elimination through pre-pressing, so that the quality safety control requirement of cast-in-place concrete is met. The utility model has the characteristics of as follows:
(1) the Y-shaped support frame system is formed by using an originally designed steel pipe concrete temporary buttress as a bearing main body and adding a simple steel inclined strut (bracket) to be welded and combined with the steel pipe concrete temporary buttress.
(2) The Y-shaped support frame system is erected on the bearing platform, the rigidity is high, the deformation is small, and an operating platform formed by the Y-shaped support frame system is wide and suitable for cast-in-place large-volume concrete construction.
(3) The continuous beam 0# block and the continuous beam 1# block are constructed on the Y-shaped support frame system, a spacious operating platform is provided for the subsequent assembly of the cradle, the cradle can be completely assembled in place at one time, the complex assembling step of the starting stage of the cradle cantilever is avoided, and the safety risk of high-altitude operation is reduced.
(4) Compared with the 0# block and the 1# block of the bridge constructed by the full framing method, the material consumption is less, the work efficiency is high, the foundation treatment is not needed, the installation and the disassembly are convenient and safe, the environmental pollution is less, and the like.
Drawings
Fig. 1-3 show the construction structure of the Y-shaped support frame of the present invention.
Wherein: the steel tube-1, the bracket diagonal bracing section steel component-2, the transverse distribution beam-3, the longitudinal distribution beam-4, the steel tube bracket with the diameter of 48 mm-5, the square wood with the thickness of 10 multiplied by 10 cm-6, the plywood-7 with the thickness of 18mm, and the section steel 2[25a-8 (transverse connection (welding) Y-shaped support).
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a Y-shaped support frame through improvement; when the method is implemented, the temporary buttress of the main pier steel pipe concrete column and the temporary support of the steel pipe 1 additionally arranged on two sides of the pier body are welded and connected with the bearing platform, the pier column embedded part and the horizontal section steel to form a stable framework system; the support diagonal bracing type steel assembly 2 is connected with the temporary buttress and the embedded steel plate of the pier body in a welding mode to form a Y-shaped support frame, the plane support area is widened, and conditions are created for construction of the 1# block.
In the implementation, the bracket diagonal bracing type steel assembly 2 is made of 2I40b steel, the upper end of the bracket diagonal bracing type steel assembly is connected with the transverse distribution beam 3, and the upper end of the transverse distribution beam 3 is provided with the longitudinal distribution beam 4; the transverse distribution beam 3 is made of I40b steel, and the longitudinal distribution beam 4 is made of I16 steel.
In implementation, the upper parts of the longitudinal distribution beams 4 are steel pipe brackets 5 with the diameter of 48mm, square timbers 6 with the specification of 10 x 10cm and plywood 7 with the thickness of 18 mm.
The utility model has the following corresponding concrete construction process;
1) welding and connecting 10 steel pipe concrete column temporary buttresses of the main pier and 6 steel pipe 1 temporary supports with the diameter of 630 multiplied by 10mm, which are additionally arranged on two sides of the pier body, with a bearing platform, pier column embedded parts and horizontal section steel to form a stable framework system;
2) the bracket diagonal bracing type steel component 2 (bracket) is welded and connected with the temporary buttress and the embedded steel plate of the pier body by adopting 2I40b to form a Y-shaped support frame, so that the plane support area is widened, and conditions are created for the construction of the 1# block.
Step 2, mounting the distribution beam; the distribution beam is blanked and processed and formed according to the design size on the ground, the distribution beam is installed in place one by using the tower crane, the top of the distribution beam is adjusted to the same horizontal plane by means of measures such as bracing wire and supporting thin steel plate and the like during installation, and balanced stress and conduction of the distribution beam are guaranteed.
Step 3, erecting and laying a bottom die on the steel pipe support; a slope bottom plate support is erected on a longitudinal I16 section steel distribution beam by adopting a phi 48 x 3mm steel pipe with a top (bottom) support, and the elevation of a bottom plate square timber and a bottom die is adjusted by the adjustable top (bottom) support.
Step 4, pre-pressing a bracket and constructing a 0-1# box girder segment; after the bottom die is installed, the Y-shaped support frame system can be pre-pressed according to the loading (sand bag hoisting and other modes) which is 1.1 times of the theoretical bearing capacity so as to verify the safety and stability of the Y-shaped support frame system, eliminate the plastic deformation and obtain the elastic deformation value. And after the prepressing is finished, the construction of the 0# block and the 1# block is completed in sequence according to the working procedures of measurement control, template installation, steel bar installation, concrete pouring, tensioning, grouting and the like.
Step 5, dismantling the temporary support steel pipe and installing the temporary support steel pipe and the hanging basket; after the construction of the 0-1# block is completed, phi 48 x 3mm steel pipes and a bottom template are removed by using the matching of hoisting equipment, an operation space is provided for next procedures such as the installation of a bottom plate of the 2# block hanging basket, and the like, and the components such as the profile steel inclined strut platform and the like can be removed after the construction of the 2# block is completed and the hanging basket moves forwards or can be removed together with a temporary support pier after the side span closure. And (3) dismantling sequence: adjusting a top support to dismantle square timbers and bottom formworks → dismantling steel pipe supports → dismantling longitudinal and transverse distribution beams → cutting off longitudinal steel section assemblies → cutting off steel section inclined legs → cutting off temporary support steel pipes.
The construction method is characterized in that:
(1) the Y-shaped support frame system is formed by using an originally designed steel pipe concrete temporary buttress as a bearing main body and adding a simple steel inclined strut (bracket) to be welded and combined with the steel pipe concrete temporary buttress.
(2) The Y-shaped support frame system is erected on the bearing platform, the rigidity is high, the deformation is small, and an operating platform formed by the Y-shaped support frame system is wide and suitable for cast-in-place large-volume concrete construction.
(3) The continuous beam 0# block and the continuous beam 1# block are constructed on the Y-shaped support frame system, a spacious operating platform is provided for the subsequent assembly of the cradle, the cradle can be completely assembled in place at one time, the complex assembling step of the starting stage of the cradle cantilever is avoided, and the safety risk of high-altitude operation is reduced.
(4) Compared with the 0# block and the 1# block of the bridge constructed by the full framing method, the material consumption is less, the work efficiency is high, the foundation treatment is not needed, the installation and the disassembly are convenient and safe, the environmental pollution is less, and the like.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A Y-shaped support frame is characterized in that; the bridge main pier steel pipe concrete temporary buttress and the steel pipe (1) temporary supports additionally arranged on two sides of the pier body are welded and connected with the bearing platform, the pier stud embedded parts and the horizontal section steel to form a stable framework system; the support inclined strut type steel assembly (2) is connected with the temporary buttress and the embedded steel plate of the pier body in a welding mode to form a Y-shaped support frame.
2. The Y-shaped support frame of claim 1, wherein; the support diagonal bracing type steel assembly (2) is made of 2I40b steel, the upper end of the support diagonal bracing type steel assembly is connected with the transverse distribution beam (3), and the upper end of the transverse distribution beam (3) is provided with the longitudinal distribution beam (4).
3. The Y-shaped support frame of claim 1, wherein; the transverse distribution beam (3) is made of I40b steel, and the longitudinal distribution beam (4) is made of I16 steel.
4. The Y-shaped support frame of claim 1, wherein; the upper parts of the longitudinal distribution beams (4) are steel pipe brackets (5) with the diameter of 48mm, square wood (6) with the specification of 10 multiplied by 10cm and plywood (7) with the thickness of 18 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809862.2U CN213896816U (en) | 2020-11-30 | 2020-11-30 | Y-shaped support frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809862.2U CN213896816U (en) | 2020-11-30 | 2020-11-30 | Y-shaped support frame |
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| CN213896816U true CN213896816U (en) | 2021-08-06 |
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| CN202022809862.2U Active CN213896816U (en) | 2020-11-30 | 2020-11-30 | Y-shaped support frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323917A (en) * | 2022-03-07 | 2022-11-11 | 陕西西建路桥工程有限公司 | Construction method for bridge side span cast-in-place section short cantilever support |
-
2020
- 2020-11-30 CN CN202022809862.2U patent/CN213896816U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323917A (en) * | 2022-03-07 | 2022-11-11 | 陕西西建路桥工程有限公司 | Construction method for bridge side span cast-in-place section short cantilever support |
| CN115323917B (en) * | 2022-03-07 | 2024-06-04 | 陕西西建路桥工程有限公司 | Construction method of bridge side span cast-in-situ section short cantilever bracket |
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