CN214939387U - Wind-resistant temporary buttress for large-span bridge construction process - Google Patents
Wind-resistant temporary buttress for large-span bridge construction process Download PDFInfo
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- CN214939387U CN214939387U CN202121629793.5U CN202121629793U CN214939387U CN 214939387 U CN214939387 U CN 214939387U CN 202121629793 U CN202121629793 U CN 202121629793U CN 214939387 U CN214939387 U CN 214939387U
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Abstract
The utility model provides a wind-resistant interim buttress for large-span bridge work progress belongs to the bridge construction field. This interim buttress of anti-wind includes bracket, attenuator and bearing structure, wherein: one end of the bracket is connected with the damper, and the other end of the bracket is used for being connected with a structure to be supported; the damper is connected with the supporting structure so as to dissipate the wind energy acting on the structure to be supported by the damper; the supporting structure comprises a distribution beam, vertical steel pipe piles and a transverse connection system, the distribution beam is connected with the damper, the upper ends of the vertical steel pipe piles are connected with the distribution beam, the lower ends of the vertical steel pipe piles are used for being fixed in a riverbed, and meanwhile the transverse connection system is connected with the vertical steel pipe piles to improve stability. The utility model discloses a set up the attenuator on the interim buttress of anti-wind to the wind-load of the long-span bridge structures of combined action resistance through attenuator, bracket and distribution roof beam, and utilize the attenuator to dissipate the wind energy, reduce its impact to the bridge, and then reduce the vibration frequency and the amplitude of fluctuation of wind-load effect underbridge.
Description
Technical Field
The utility model belongs to the bridge construction field, more specifically relates to an anti-wind temporary buttress that is used for large-span bridge work progress.
Background
With the vigorous development of the traffic industry in China, the requirement for building a large-span bridge in severe weather areas such as typhoons is more urgent. At present, in the construction of the existing large-span steel truss arch bridge spanning big rivers and big rivers, the prefabricated members in a factory are transported to a construction site for assembly, and the bridge span is large and the engineering quantity is large, so that the construction period is ensured to be generally assembled from two sides of the spanned river to the middle of the span at the same time.
However, in the prior art, the construction period is long, the bridge is in a large cantilever state before closure, and when severe weather such as typhoon occurs, the bridge in the large cantilever state can deform and vibrate greatly under the action of wind load. In order to ensure the safety of the bridge, temporary buttresses are required to be arranged, the existing temporary buttresses are in rigid contact with the bridge, the impact and vibration of strong wind on the bridge cannot be reduced, and the swing amplitude of the bridge is often too large and even resonates under the action of strong wind weather, so that personnel and property loss is caused.
SUMMERY OF THE UTILITY MODEL
To the defect of prior art, the utility model aims to provide an interim buttress of anti-wind for large-span bridge work progress aims at solving among the prior art the problem that interim buttress can't reduce the impact and the vibration of high wind.
In order to achieve the above object, the utility model provides a wind-resistant temporary buttress for large-span bridge work progress, this wind-resistant temporary buttress include bracket, attenuator and bearing structure, wherein:
one end of the bracket is connected with the damper, and the other end of the bracket is used for being connected with a structure to be supported, so that the wind-resistant temporary buttress is connected with the structure to be supported;
the damper is connected with the supporting structure so as to dissipate wind energy acting on the structure to be supported by the damper;
the supporting structure comprises a distribution beam, vertical steel pipe piles and a transverse connecting system, wherein the distribution beam is connected with the damper; the upper end of the vertical steel pipe pile is connected with the distribution beam, the lower end of the vertical steel pipe pile is used for being fixed in a riverbed, and meanwhile, the transverse connection system is connected with the vertical steel pipe pile so as to improve the stability of the supporting structure.
Preferably, the distribution beam comprises a preset number of connecting cross rods and two longitudinal rods, wherein two ends of each connecting cross rod are connected with the two longitudinal rods respectively to form a main structure of the distribution beam, and meanwhile, the connecting cross rods on the outer side are connected with the dampers, and the action points of the dampers and the distribution beam are ensured to be located on the symmetry line of the distribution beam.
Preferably, the distribution beam further comprises a preset number of inclined rods, and the two inclined rods are arranged between the two connecting cross rods in a group and are respectively connected with the connecting cross rods to form an isosceles triangle, so that the stability of the distribution beam is improved.
Preferably, the number of the connecting crossbars in the distribution beam is more than four.
More preferably, the number of the distribution beams is two or more, and the distribution beams are arranged in parallel with each other.
Preferably, two dampers are symmetrically connected to each distribution beam along the transverse bridge direction.
More preferably, the lower part of the vertical steel pipe pile is poured by forming a hole in the steel pipe.
More preferably, the number of the transverse connection systems is 3 to 5.
More preferably, the number of the vertical steel pipe piles is 3 to 5.
Preferably, the wind-resistant temporary buttress used in the construction process of the large-span bridge further comprises oblique steel pipe piles, and the oblique steel pipe piles are arranged on two sides of the wind-resistant temporary buttress along the transverse bridge direction.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
1. the utility model discloses a set up the attenuator on anti-wind interim buttress, and utilize the attenuator to connect bracket and distribution beam to this resists the wind-load of large-span bridge structures through the combined action of attenuator, bracket and distribution beam, and utilize the attenuator to dissipate the wind energy, reduce its impact to the arched bridge, and then reduce the vibration frequency and the swing range of arched bridge under the wind-load effect, avoid the arched bridge to take place resonance;
2. particularly, the utility model discloses an optimize the mounted position of distribution beam structure and attenuator, utilize down tube and connection horizontal pole to connect and constitute isosceles triangle, can effectively improve the stability of distribution beam, set up the action point of attenuator and distribution beam on the symmetry line of distribution beam simultaneously, make the distribution beam atress reasonable, warp harmoniously, can effectively improve the stability and the security of wind-resistant interim buttress;
3. meanwhile, the oblique steel pipe piles are arranged along the transverse direction of the bridge, so that the bending moment borne by the vertical steel pipe column can be reduced due to the axial pressure borne by the oblique steel pipe piles, the material performance is fully utilized, the dead weight is reduced, and the manufacturing cost of the wind-resistant temporary buttress can be effectively saved;
4. furthermore, the utility model provides a vertical steel-pipe pile in wind-resistant interim buttress adopts inside induced hole mode to construct the bored concrete pile in the riverbed rock stratum in order to carry out the anchor, guarantees that vertical steel-pipe pile can resist vertical pulling force and pressure to resist because last pulling force and pressure that the strong wind caused to the stand.
Drawings
Fig. 1 is an elevation view of a wind-resistant temporary buttress for a long-span bridge construction process according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a wind-resistant temporary buttress for use in a large-span bridge construction process according to an embodiment of the present invention;
FIG. 3 is an elevation view of a wind-resistant temporary buttress in an embodiment of the present invention;
FIG. 4 is a side view of a wind-resistant temporary buttress in an embodiment of the present invention;
FIG. 5 is a plan view of a wind-resistant temporary buttress in an embodiment of the present invention;
figure 6 is an elevation view of a distribution beam in an embodiment of the invention;
figure 7 is a plan view of a distributor beam in an embodiment of the invention;
FIG. 8 is a side view of a distributor beam in an embodiment of the present invention;
FIG. 9 is a schematic view of the bracket and damper in the embodiment of the present invention;
fig. 10 is a big picture of the connection of the vertical steel pipe pile and the cast-in-situ bored pile in the embodiment of the utility model.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1. the steel truss arch bridge comprises, by weight, 1-1 parts of a steel truss arch bridge lower cross beam, 2 parts of brackets, 3 parts of dampers, 3-1 parts of hinges, 4 parts of distribution beams, 4-1 parts of connecting cross rods, 4-2 parts of oblique rods, 4-3 parts of longitudinal rods, 5 parts of vertical steel pipe piles, 6 parts of oblique steel pipe piles, 7 parts of transverse connecting systems, 8 parts of bored cast-in-place piles and 9 parts of wind-resistant temporary buttresses.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-6, the embodiment of the utility model provides a temporary buttress of anti-wind for large-span bridge work progress, this temporary buttress of anti-wind 9 includes bracket 2, attenuator 3 and bearing structure, wherein:
one end of the bracket 2 is connected with the damper 3, and the other end of the bracket is used for being connected with a lower beam 1-1 of the steel truss arch bridge, so that the wind-resistant temporary buttress is connected with the steel truss arch bridge 1, and the load of the steel truss arch bridge 1 is transferred to a wind-resistant temporary buttress 9;
as shown in fig. 9, two ends of the damper 3 are hinged to the distribution beam 4 and the bracket 2 through hinges 3-1, so that the distribution beam 4 and the bracket 2 are connected through the damper 3, and the wind energy applied to the steel truss arch bridge 1 is dissipated through the energy consumption principle of the damper 3 during operation, thereby reducing the impact of wind load on the steel truss arch bridge 1, further reducing the vibration frequency and the swing amplitude of the steel truss arch bridge under the action of the wind load, and avoiding the resonance of the steel truss arch bridge;
the supporting structure comprises vertical steel pipe piles 5, transverse connection systems 7 and distribution beams 4, the vertical steel pipe piles 5 are connected with the transverse connection systems 7 in an interconnected mode, the upper ends of the vertical steel pipe piles 5 are connected with the distribution beams 4, the lower ends of the vertical steel pipe piles are used for being fixed in a riverbed, and therefore fixing of the wind-resistant temporary buttress is achieved, wind loads acting on the bridge 1 are jointly resisted by the supporting structure, the bracket 2 and the damper 3, and then safety of the bridge in a large cantilever state under strong wind weather is guaranteed.
Further, as shown in fig. 7, the distribution beam 4 includes a connecting cross bar 4-1, a longitudinal bar 4-3 and an inclined bar 4-2, wherein the connecting cross bar 4-1 and the longitudinal bar 4-3 are connected to form a main structure of the distribution beam 4, and the number of the connecting cross bars 4-1 is more than four; the two inclined rods 4-2 are a group, are arranged between the two connecting cross rods 4-1 and are respectively connected with the connecting cross rods 4-1 to form an isosceles triangle, so that the stability of the distribution beam 4 is improved; the two dampers 3 on each distribution beam 4 are respectively connected with the connecting cross rods 4-1 on the two sides and symmetrically arranged along the transverse bridge direction, and when the distribution beam works, the dampers 3 transmit force to a node of an isosceles triangle formed by the connecting cross rods 4-1 and the inclined rods 4-2, so that each rod piece of the distribution beam 4 is mainly subjected to axial load and is reasonably stressed. Meanwhile, the distribution beam 4 is of a plane symmetrical structure, and the action points of the dampers 3 and the distribution beam 4 are located on the symmetrical line of the distribution beam 4, so that the distribution beam 4 and the vertical steel pipe piles 5 below the distribution beam 4 are stressed reasonably and deform coordinately, and the material characteristics can be fully exerted. As shown in fig. 8, the number of the distribution beams is two or more, and the distribution beams are arranged in parallel along the bridge direction, so that the wind resistance of the wind-resistant temporary buttress is improved.
Further, the wind-resistant temporary buttress for large-span bridge construction further comprises an oblique steel pipe pile 6, the oblique steel pipe pile 6 is arranged on two sides of the wind-resistant temporary buttress along the transverse bridge direction, the oblique steel pipe column 6 bears axial pressure in strong wind weather, bending moment borne by the vertical steel pipe column 5 is reduced, material performance is fully utilized, self weight is reduced, and cost of the wind-resistant temporary buttress is saved. As shown in fig. 10, the vertical steel pipe pile 5 is poured by drilling holes in the steel pipe, and the cast-in-situ bored pile 8 is constructed in the riverbed rock stratum to anchor the vertical steel pipe pile 5 to resist the pressure and uplift force caused by strong wind. The number of the transverse connection systems and the number of the vertical steel pipe piles are respectively 3-5, and specific calculation is carried out according to the load size and the geological condition, so that the strength, the rigidity and the stability of the wind-resistant temporary buttress are guaranteed.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a temporary buttress of anti-wind for large-span bridge work progress which characterized in that, this temporary buttress of anti-wind (9) includes bracket (2), attenuator (3) and bearing structure, wherein:
one end of the bracket (2) is connected with the damper (3), and the other end of the bracket is used for being connected with a structure to be supported, so that the wind-resistant temporary buttress is connected with the structure to be supported;
the damper (3) is connected with the supporting structure so as to dissipate the wind energy acting on the structure to be supported by the damper (3);
the supporting structure comprises a distribution beam (4), vertical steel pipe piles (5) and a transverse connecting system (7), wherein the distribution beam (4) is connected with the damper (3); the upper end of the vertical steel pipe pile (5) is connected with the distribution beam (4), the lower end of the vertical steel pipe pile is used for being fixed in a riverbed, and meanwhile, the transverse connection system (7) is connected with the vertical steel pipe pile (5) to improve the stability of the supporting structure.
2. The wind-resistant temporary buttress for the large-span bridge construction process according to claim 1, characterized in that said distribution beam (4) comprises a predetermined number of connecting cross bars (4-1) and two longitudinal bars (4-3), wherein both ends of said connecting cross bars (4-1) are respectively connected with two said longitudinal bars (4-3) to form the main structure of said distribution beam (4), and said connecting cross bars (4-1) on the outer side are connected with said damper (3) and ensure that the action points of said damper (3) and distribution beam (4) are located on the symmetry line of said distribution beam (4).
3. The wind-resistant temporary buttress for the construction process of a large-span bridge according to claim 2, characterized in that said distribution beam (4) further comprises a predetermined number of diagonal rods (4-2), and two of said diagonal rods (4-2) are grouped, arranged between two connecting cross-bars (4-1), and connected to said connecting cross-bars (4-1) respectively to form an isosceles triangle, so as to improve the stability of said distribution beam (4).
4. The wind-resistant temporary buttress for the construction process of a large-span bridge according to claim 2, characterized in that the number of connecting crossbars (4-1) in said distribution beam (4) is four or more.
5. Wind-resistant temporary pier for long-span bridge construction according to claim 2, characterized in that the number of distribution beams (4) is two or more and arranged parallel to each other.
6. The wind-resistant temporary buttress for the construction process of the large-span bridge according to any one of claims 1 to 5, characterized in that two dampers (3) are symmetrically connected to each distribution beam (4) along the transverse bridge direction.
7. The wind-resistant temporary buttress for the large-span bridge construction process according to claim 6, characterized in that the lower part of the vertical steel pipe pile (5) is poured by means of an internal opening of a steel pipe.
8. Wind-resistant temporary pier for long-span bridge construction processes according to claim 6, characterized in that the number of said transverse connection systems (7) is between 3 and 5.
9. The wind-resistant temporary buttress for the large-span bridge construction process according to claim 6, wherein the number of the vertical steel pipe piles (5) is 3-5.
10. The wind-resistant temporary buttress for the large-span bridge construction process according to any one of claims 7 to 9, wherein the wind-resistant temporary buttress for the large-span bridge construction process further comprises oblique steel pipe piles (6), and the oblique steel pipe piles (6) are arranged on two sides of the wind-resistant temporary buttress (9) along the transverse bridge direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121629793.5U CN214939387U (en) | 2021-07-16 | 2021-07-16 | Wind-resistant temporary buttress for large-span bridge construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121629793.5U CN214939387U (en) | 2021-07-16 | 2021-07-16 | Wind-resistant temporary buttress for large-span bridge construction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214939387U true CN214939387U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121629793.5U Active CN214939387U (en) | 2021-07-16 | 2021-07-16 | Wind-resistant temporary buttress for large-span bridge construction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214939387U (en) |
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2021
- 2021-07-16 CN CN202121629793.5U patent/CN214939387U/en active Active
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