CN219671379U - Prestressed fish belly type internal supporting system anti-collision structure - Google Patents
Prestressed fish belly type internal supporting system anti-collision structure Download PDFInfo
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- CN219671379U CN219671379U CN202321300661.7U CN202321300661U CN219671379U CN 219671379 U CN219671379 U CN 219671379U CN 202321300661 U CN202321300661 U CN 202321300661U CN 219671379 U CN219671379 U CN 219671379U
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- web member
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- straight web
- shaped steel
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- 241000251468 Actinopterygii Species 0.000 title claims description 14
- 210000001015 abdomen Anatomy 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Rod-Shaped Construction Members (AREA)
Abstract
The utility model relates to the technical field of reinforcement of a supporting system in a foundation pit, in particular to an anti-collision structure of a prestressed fish-bellied internal supporting system, which comprises an upper chord beam, a straight web member vertically fixed on the upper chord beam, and inclined web members positioned at two sides of the straight web member and used for supporting, and further comprises: the steel strands penetrate and connect the end parts of the straight web members far away from the upper chord beam and are fixed with the triangular connecting pieces arranged at the two ends of the upper chord beam; the U-shaped steel is covered on the upper part of the steel strand and is movably fixed with the straight web member and the triangular connecting piece; the supporting mechanism comprises a sleeve sleeved on the upright post, an angle steel bracket arranged on at least one side of the sleeve and a supporting rod connected to the angle steel bracket and the end part of the straight web member. The utility model solves the problem that the prestress loss of the steel strand is caused by impact or other external force, and ensures the stability of the whole structure and the reliability of displacement control; and meanwhile, the U-shaped steel is vertically supported through the supporting mechanism, so that the anti-collision performance of the U-shaped steel is improved.
Description
Technical Field
The utility model relates to the technical field of reinforcement of a foundation pit inner support system, in particular to an anti-collision structure of a prestressed fish-bellied inner support system.
Background
The prestressed fish web girder supporting system consists of an upper chord girder, a straight web member, a diagonal web member, a connecting rod, a lower chord steel strand, a bridge frame and the like, and compared with the traditional reinforced concrete supporting or steel supporting system, the prestressed fish web girder supporting system can provide a wide excavation space for a foundation pit, and is greatly convenient for earthwork excavation and transportation; secondly, the fish belly sill system can adjust the vertical and horizontal displacement of surrounding soil layers to control deformation through the application of prestress, meets the requirements of safety and normal use, and is widely applied to multiple important projects in China. Especially, under the condition that sensitive pipelines and other important protection objects are arranged around a soft soil area or a foundation pit, the system deformation control capability and the control effect are good.
However, the system has smaller out-of-plane rigidity and is easy to be unstable, and when a construction site is impacted by construction equipment, an arch or a decline appears, so that the deformation of a foundation pit is obviously increased. In particular, the steel strand of the fish web girder has smaller rigidity, belongs to weak parts of stress, controls the displacement of the foundation pit by applying and adjusting prestress, and easily causes larger prestress loss once impacted by construction equipment or construction materials drop randomly, so that the foundation pit displacement control capability of the fish web girder is greatly reduced, and the stability and construction safety of the whole structure are endangered.
Disclosure of Invention
In order to solve at least one technical problem, the utility model provides an anti-collision structure of a prestress fish belly type internal support system, which is characterized in that a U-shaped steel with a downward opening is covered on a steel strand to protect the steel strand, and a support mechanism is matched to vertically support the U-shaped steel, so that the problem that the whole structure is unstable due to prestress loss caused by collision or other external forces of the steel strand is solved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a prestressing force fish belly formula internal support system anticollision structure, includes the string roof beam, perpendicular being fixed in go up string roof beam's straight web member and be located straight web member both sides are used for supporting the inclined web member, still include:
the steel strands penetrate and connect the end parts of the straight web members far away from the upper chord beam and are fixed with the triangular connecting pieces arranged at the two ends of the upper chord beam;
the U-shaped steel is covered on the upper part of the steel strand and is movably fixed with the straight web member and the triangular connecting piece;
the supporting mechanism comprises a sleeve sleeved on the upright post, an angle steel bracket arranged on at least one side of the sleeve and a supporting rod connected with the angle steel bracket and the end part of the straight web member.
Preferably, the two ends of the U-shaped steel are provided with lap joints.
Preferably, the overlapping portion is a hollow cuboid or a triangular column.
Preferably, stiffening ribs are arranged on the upper end face of the joint of the lap joint part, the straight web member and the triangular connecting piece.
Preferably, a plurality of positioning holes are arranged on the circumference of the sleeve, and are movably fixed with the upright post through positioning bolts
Preferably, the angle steel bracket comprises a bracket plate vertically fixed with the sleeve and used for connecting the supporting rod, a reinforcing plate used for obliquely supporting the bracket plate and a side plate used for laterally supporting the bracket plate.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the U-shaped steel with the downward opening is covered on the steel strand, so that the steel strand is protected, prestress loss caused by impact or other external force of the steel strand is avoided, and the stability of the whole structure and the reliability of displacement control are ensured; and meanwhile, the U-shaped steel is vertically supported through the supporting mechanism, so that the anti-collision performance of the U-shaped steel is improved, and the stability of the whole structure is further ensured.
Drawings
FIG. 1 is a top view of a pre-stressed fish-web internal support system crash structure;
FIG. 2 is an elevation view of a pre-stressed fish-web internal support system crash structure;
FIG. 3 is a bottom view of a pre-stressed fish-web internal support system crash structure;
FIG. 4 is a schematic diagram of the positions of the U-shaped steel and the steel strands in the utility model;
FIG. 5 is a schematic view of the assembly of the U-shaped steel and the triangular connector of the present utility model;
FIG. 6 is a schematic view of the assembly of U-section steel and ends of the web members of the present utility model;
FIG. 7 is a schematic view of a lap joint structure according to the present utility model;
FIG. 8 is a schematic view of a supporting mechanism according to the present utility model;
in the figure: 1. a top chord beam; 2. a straight web member; 3. a diagonal web member; 4. steel strand; 5. u-shaped steel; 6. a triangle connecting piece; 7. a sleeve; 8. angle steel brackets; 9. a support rod; 10. triangular lap joint; 11. square lap joint; 12. stiffening ribs; 13. a bracket plate; 14. a reinforcing plate; 15. and a side plate.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present utility model, the following description will clearly and completely describe the technical solutions of the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model.
Referring to fig. 1-8, an anti-collision structure of a prestressed fish-bellied inner support system includes an upper chord beam 1, a straight web member 2 vertically fixed to the upper chord beam 1, and diagonal web members 3 located at two sides of the straight web member 2 for supporting, and further includes:
the steel stranded wires 4 are penetrated and connected with the end parts of the straight web members 2 far away from the upper chord beam 1 and are fixed with the triangular connecting pieces 6 arranged at the two ends of the upper chord beam 1;
the U-shaped steel 5 is downwards opened, and the U-shaped steel 5 is covered on the upper part of the steel stranded wire 4 and is movably fixed with the straight web member 2 and the triangular connecting piece 6;
the supporting mechanism comprises a sleeve 7 sleeved on the upright post, an angle steel bracket 8 arranged on at least one side of the sleeve 7 and a supporting rod 9 connected with the angle steel bracket 8 and the end part of the straight web member 2.
In the above embodiment, the steel strand 4 is protected by covering the steel strand 4 with the U-shaped steel with the downward opening, so that the prestress loss of the steel strand 4 caused by impact or other external forces is avoided, and the stability of the whole structure and the reliability of displacement control are ensured; and meanwhile, the U-shaped steel 5 is vertically supported through the supporting mechanism, so that the anti-collision performance of the U-shaped steel is improved, and the stability of the whole structure is further ensured.
It should be noted that the triangular connecting piece 6 is an anchoring structure, which is used for providing prestress to two ends of the steel strand 4 to tighten the steel strand 4. The U-shaped steel 5 is only one of the mechanisms that can be covered on the upper portion of the steel strand 4 to protect the steel strand 4 from external impact, and those skilled in the art can fully adopt other similar structures to achieve the above-mentioned purpose.
In order to facilitate the assembly of the U-shaped steel 5 with the straight web member 2 and the triangular connecting piece 6, two ends of the U-shaped steel are provided with overlapping parts, wherein the overlapping parts can be hollow cuboid or triangular columns, namely triangular overlapping pieces 10 and square overlapping pieces 11.
As shown in fig. 5-7, considering that both sides of the straight web member 2 need to be connected with the lap joint part of the U-shaped steel 5 and the upper installation space of the straight web member 2 is limited, the connection between the U-shaped steel 5 and the straight web member 2 is realized through the triangular lap joint part 10 which is in staggered fit; as the triangular connecting piece 6 only needs one side to be connected with the U-shaped steel 5, the square lap joint piece 11 with larger contact area is adopted to realize the fixed connection between the U-shaped steel 5 and the triangular connecting piece 6.
The lap joint part can be formed into a hollow cuboid or triangular column with two open ends by cutting the U-shaped steel and welding a corresponding triangular or square steel plate at the lower part of the upper end face of the cut U-shaped steel. Namely, square-shaped lap pieces 11 or triangular-shaped lap pieces 10. Therefore, the bending strength of the lap joint part can be improved, the lap joint part is prevented from deforming when the bolt is fixed or is impacted by external force, and the stability of the whole structure is improved.
In order to enhance the connection firmness between the U-shaped steel 5 and the straight web member 2 and the triangular connecting piece 6, in the embodiment, the upper end surface of the connection part between the lap joint part and the straight web member 2 and the triangular connecting piece 6 is provided with stiffening ribs 12. The number of the stiffening ribs 12 may be set according to actual needs, and in this embodiment, the stiffening ribs 12 are 3 or 4.
As shown in fig. 8, in order to facilitate the movable fixation of the sleeve 7, a plurality of positioning holes are formed on the circumferential side of the sleeve 7 and are movably fixed with the upright posts by positioning bolts, so that the height of the supporting mechanism can be conveniently adjusted to adapt to the distance between the supporting mechanism and the vertical web member 2.
In one embodiment, the angle bracket 8 comprises a bracket plate 13 fixed perpendicular to the sleeve 7 for connecting the support rods 9, a reinforcing plate 14 for diagonally supporting the bracket plate 13, and a side plate 15 for laterally supporting the bracket plate 13.
It is obvious that the angle bracket 8 is only a better structure, and the person skilled in the art can completely improve the structure on the basis of the structure shown in the implementation to realize the structural support of the U-shaped steel 5 and the straight web member 2.
In order to increase the service life of the whole structure, the U-shaped steel 5 and the supporting mechanism are made of stainless steel.
While the foregoing is directed to embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present utility model, and such modifications and changes should be considered as being within the scope of the present utility model.
Claims (6)
1. The utility model provides a prestressing force fish belly formula internal support system anticollision structure, includes string roof beam (1), perpendicular being fixed in go up straight web member (2) of string roof beam (1) and be located straight web member (2) both sides are used for supporting inclined web member (3), its characterized in that still includes:
the steel strands (4) are penetrated and connected with the end parts of the straight web members (2) far away from the upper chord beam (1) and are fixed with the triangular connecting pieces (6) arranged at the two ends of the upper chord beam (1);
the U-shaped steel (5) is downwards opened, and the U-shaped steel (5) is covered on the upper part of the steel stranded wire (4) and is movably fixed with the straight web member (2) and the triangular connecting piece (6);
the supporting mechanism comprises a sleeve (7) sleeved on the upright post, an angle steel bracket (8) arranged on at least one side of the sleeve (7) and a supporting rod (9) connected between the angle steel bracket (8) and the end part of the straight web member (2).
2. The pre-stressed fish belly type internal support system anti-collision structure according to claim 1, wherein the two ends of the U-shaped steel (5) are provided with lap joints.
3. The pre-stressed fish belly internal support system bump structure of claim 2 wherein the overlap is a hollow cuboid or triangular prism.
4. A pre-stressed fish belly internal support system anti-collision structure according to claim 3, characterized in that the upper end surface of the joint of the lap () with the straight belly member (2) and the triangle connector (6) is provided with stiffening ribs (12).
5. The pre-stressed fish belly type internal support system anti-collision structure according to claim 1, wherein the circumference of the sleeve (7) is provided with a plurality of positioning holes and is movably fixed with the upright post through positioning bolts.
6. Pre-stressed fish-bellied internal support system anti-collision structure according to claim 1, characterized in that the angle bracket (8) comprises a bracket plate (13) fixed perpendicular to the sleeve (7) for connecting the support bar (9), a reinforcing plate (14) for supporting the bracket plate (13) diagonally and side plates (15) for supporting the bracket plate (13) laterally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321300661.7U CN219671379U (en) | 2023-05-26 | 2023-05-26 | Prestressed fish belly type internal supporting system anti-collision structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321300661.7U CN219671379U (en) | 2023-05-26 | 2023-05-26 | Prestressed fish belly type internal supporting system anti-collision structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219671379U true CN219671379U (en) | 2023-09-12 |
Family
ID=87893954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321300661.7U Active CN219671379U (en) | 2023-05-26 | 2023-05-26 | Prestressed fish belly type internal supporting system anti-collision structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219671379U (en) |
-
2023
- 2023-05-26 CN CN202321300661.7U patent/CN219671379U/en active Active
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