CN214656419U - Steel pipe sand filling type ultrahigh support - Google Patents
Steel pipe sand filling type ultrahigh support Download PDFInfo
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- CN214656419U CN214656419U CN202120338386.2U CN202120338386U CN214656419U CN 214656419 U CN214656419 U CN 214656419U CN 202120338386 U CN202120338386 U CN 202120338386U CN 214656419 U CN214656419 U CN 214656419U
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Abstract
The utility model discloses a steel pipe sand filling type ultrahigh support, which comprises a steel pipe truss consisting of a vertical rod component, an inclined rod component and a horizontal rod component, wherein the vertical rod component comprises a vertical column formed by longitudinally connecting steel pipe segments, and sand is densely filled in the vertical column; the size of the cross section of the bracket is small, so that the material consumption can be effectively reduced; the steel pipe is light in weight, so that the construction difficulty is reduced; after sand is filled in the steel pipe, "increase" the cross section of the steel pipe under pressure to restrain the transverse deformation of the steel pipe, reduce the slenderness ratio of the steel pipe under pressure, improve the local stability of the support, thereby strengthen the overall stability and the bearing capacity of the support, reduce the elasticity and the inelastic deformation of the support, thereby reduce the difficulty of the pre-camber of the template and the pre-pressing of the support. The support is convenient to construct, the impact of upper construction vibration on the support can be reduced, the structural safety is improved, and the support is easy to disassemble after construction is completed.
Description
Technical Field
The utility model relates to a bridge construction field, concretely relates to steel pipe in cast-in-place construction of bridge engineering substructure fills sand mould superelevation support.
Background
Due to the influence of the huge size of the bridge structure and high linear mark factors, certain members are higher away from the ground, and difficulty is caused to the cast-in-place construction of concrete, such as a main tower beam of a cable-stayed bridge, a high pier beam of a beam bridge and the like. Under certain conditions, cast-in-place construction of such members requires the use of a floor super high support. The ultrahigh support is generally of a steel structure, the vertical rod is a main stress component, the vertical compression is mainly used, the circular steel tube is generally adopted, and the inclined rod and the horizontal rod assist in stress of the vertical rod, so that the stability of the vertical rod is guaranteed. The ultrahigh support has some problems in practical application: firstly, because the height of the ultrahigh support is very large, the length of the vertical rod is generally more than 40m, and the vertical rod is a compression steel member, so that the stability problem exists, the diameter of the vertical rod is often very large, and the number of inclined rods and horizontal rods is correspondingly large, so that the stability of the vertical rod is improved, but the material consumption and the construction difficulty are increased, the construction period is prolonged, and other adverse conditions are caused; secondly, due to the height, the elastic and inelastic deformation of the ultrahigh support under the load action is larger than that of a common support, and the setting of the pre-camber and the pre-pressing of the support are difficult; finally, the problem of local stability of the stressed vertical bar is not negligible.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses an in order to overcome that traditional super high support material is big, the construction degree of difficulty is big, construction cycle is long, the great problem of construction risk, provides a steel pipe sand filling type super high support, and it is little to have the material quantity, and the construction degree of difficulty is little, and construction cycle is short and overall stability and bearing capacity are strong characteristics.
The utility model discloses a steel pipe sand filling type ultrahigh support, which comprises a steel pipe truss consisting of a vertical rod component, an inclined rod component and a horizontal rod component, wherein the vertical rod component comprises a vertical column formed by the longitudinal connection of steel pipe segments, and sand is densely filled in the vertical column;
furthermore, the upright post is provided with an end cover which is embedded at the top end of the upright post;
further, the end sealing cover comprises a groove cavity and a sealing cover plate, wherein the groove cavity is formed by a side plate and a bottom plate, and concrete is filled in the groove cavity;
further, the groove cavity is in shape fit with the cross section of the upright post, and asphalt is filled between the side plate of the groove cavity and the inner side wall of the upright post;
furthermore, a connecting beam is arranged on the end-sealing cover, a Bailey beam is arranged on the beam, and the connecting beam comprises two horizontal beams, a vertical connecting piece arranged between the horizontal beams and a transverse connecting piece horizontally connected with the adjacent horizontal beams;
further, the steel pipe sections are connected through flanges;
furthermore, a flange plate is arranged on each steel pipe connecting node, a plurality of stiffening plates are uniformly distributed along the circumferential direction of the flange plate, and the stiffening plates longitudinally extend to the outer surface of the steel pipe;
furthermore, the section of the stiffening plate is a straight triangle, and two right-angle sides are respectively connected with the flange plate and the outer surface of the steel pipe.
The utility model has the advantages that: the utility model discloses a steel pipe sand filling type ultrahigh support, which has small cross-sectional size and can effectively reduce the material consumption; the steel pipe is light in weight, so that the construction difficulty is reduced; after sand is filled in the steel pipe, "increase" the cross section of the steel pipe under pressure to restrain the transverse deformation of the steel pipe, reduce the slenderness ratio of the steel pipe under pressure, improve the local stability of the support, thereby strengthen the overall stability and the bearing capacity of the support, reduce the elasticity and the inelastic deformation of the support, thereby reduce the difficulty of the pre-camber of the template and the pre-pressing of the support. The support is convenient to construct, the impact of upper construction vibration on the support can be reduced, the structural safety is improved, and the support is easy to disassemble after construction is completed.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a steel pipe segment;
FIG. 3 is a schematic view of a flange connection structure of a steel pipe segment;
FIG. 4 is a schematic view of a forced structure of the sand-filled steel tube;
FIG. 5 is a schematic illustration of a steel pipe sand pack operation;
FIG. 6 is a schematic illustration of a sand pack operation for a segment of steel pipe.
Detailed Description
Fig. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic structural diagram of a steel pipe segment; FIG. 3 is a schematic view of a flange connection structure of a steel pipe segment; FIG. 4 is a schematic view of a forced structure of the sand-filled steel tube; FIG. 5 is a schematic illustration of a steel pipe sand pack operation; FIG. 6 is a schematic illustration of a sand pack operation for a segment of steel pipe. As shown in the figures, the steel pipe sand filling type ultrahigh support in the embodiment comprises a steel pipe truss consisting of a vertical rod assembly, an inclined rod assembly and a horizontal rod assembly, wherein the vertical rod assembly comprises an upright post 1 formed by longitudinally connecting steel pipe sections, and sand 2 is densely filled in the upright post 1; the steel pipe truss structure adopts the existing structure, and the difference is that sand 2 is filled in a steel pipe upright post 1 serving as the truss, fine sand 2 is preferably adopted, and the stress performance and the safety of the support are improved by utilizing the transverse hoop effect 9 of the steel pipe on the sand 2. The structure can reduce the section size of the bracket and can effectively reduce the material consumption; the steel pipe is light in weight, so that the construction difficulty is reduced; after the steel pipe is filled with sand 2, the section of the pressed steel pipe is enlarged, the transverse deformation of the steel pipe is restrained, the slenderness ratio of the pressed steel pipe is reduced, the local stability of the support is improved, the overall stability and the bearing capacity of the support are enhanced, the elastic deformation and the inelastic deformation of the support can be reduced, and the difficulty of pre-arching of the template and pre-pressing of the support is reduced. The support is convenient to construct and easy to disassemble after construction is completed.
In this embodiment, the upright post 1 is provided with an end cover 3, and the end cover 3 is embedded in the top end of the upright post 1; set up the apron at 1 top of steel pipe stand, prevent that fine sand 2 from upwards "kicking out" because the effect of lateral force for fine sand 2 is in three-dimensional stress state, improves the stability and the bearing capacity of super high support.
In this embodiment, the end cover 3 includes a slot cavity formed by a side plate 31 and a bottom plate 32, and a sealing cover plate 33, and the slot cavity is filled with concrete; concrete is filled in the inner groove cavity of the end sealing cover 3, so that the strength of the end sealing cover 3 is increased, the fine sand 2 is effectively prevented from upwards "overflowing" due to the action of lateral force, and the vertical load 10 on the upper portion is carried.
In the embodiment, the groove cavity conforms to the cross section of the upright post 1, and asphalt 4 is filled between the side plate 31 of the groove cavity and the inner side wall of the upright post 1; by "conformal" is meant that the cross-section of the channel matches the cross-section of the column 1, the cross-section of the steel tube is circular, and the cross-section of the channel is also circular. The end sealing strength of the end sealing cover 3 is improved by filling asphalt 4 between the side plate 31 of the groove cavity and the inner side wall of the upright post 1.
In this embodiment, the end cover 3 is provided with a connecting beam 5, the beam 5 is provided with a bailey beam, and the connecting beam 5 comprises two horizontal beams, a vertical connecting piece arranged between the horizontal beams and a transverse connecting piece horizontally connecting the adjacent horizontal beams; used for supporting and fixing the Bailey beam.
In the embodiment, the steel pipe sections are connected by flanges; a flange plate 6 is arranged on each steel pipe connecting node, a plurality of stiffening plates 7 are uniformly distributed along the circumferential direction of the flange plate 6, the stiffening plates 7 longitudinally extend to the outer surface of the steel pipe, the cross section of each stiffening plate 7 is a straight triangle, and two right-angle sides are respectively connected with the flange plate 6 and the outer surface of the steel pipe; the strength of the connecting part is improved, and the phenomenon of stress concentration of the flange 6 is avoided. The muscle of straight triangle-shaped, its right-angle side is located steel pipe bridge pile and ring flange 6 respectively radially, specifically does, and the right-angle side on the steel pipe stand 1 is longer than the right angle side length on the ring flange 6, and structural strength is higher, and stability is stronger, can avoid the edge of ring flange 6 to damage because of stress concentration.
After the foundation construction is completed, a plurality of sections of the ultrahigh support steel pipes (the upright columns 1) are installed, and fine sand is filled into the steel pipes by adopting mechanical equipment. Meanwhile, the vibrating rod is used for touching the wall of the steel pipe to vibrate, so that fine sand can be filled in the steel pipe. And then, continuously adopting flange connection to install the steel pipe segments, filling sand into the steel pipe, and performing vibration filling. Finally, after the steel pipe is installed, fine sand is filled in a specified range, the top surface of the steel pipe is ensured to be positioned between a minimum sand filling position 8 and a maximum sand filling position 9, the steel pipe end cover 3 is installed, and the construction of the Bailey beam structure is continued
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. The utility model provides a steel pipe sand-packed type superelevation support which characterized in that: the steel pipe truss comprises a steel pipe truss body formed by a vertical rod component, an inclined rod component and a horizontal rod component, wherein the vertical rod component comprises a vertical column formed by longitudinally connecting steel pipe sections and densely filled sand in the vertical column.
2. The steel pipe sand-packed ultrahigh support according to claim 1, characterized in that: the stand is provided with the end cover, the end cover inlays and locates the stand top.
3. The steel pipe sand-packed ultrahigh support according to claim 2, characterized in that: the end cover comprises a groove cavity and a sealing cover plate, wherein the groove cavity is formed by side plates and a bottom plate, and concrete is filled in the groove cavity.
4. The steel pipe sand-packed ultrahigh support according to claim 3, characterized in that: the groove cavity is in shape fit with the cross section of the upright post, and asphalt is filled between the side plate of the groove cavity and the inner side wall of the upright post.
5. The steel pipe sand-packed ultrahigh support according to claim 4, characterized in that: the end-sealing cover is provided with a connecting beam, the beam is provided with a Bailey beam, and the connecting beam comprises two horizontal beams, a vertical connecting piece arranged between the horizontal beams and a transverse connecting piece horizontally connected with the adjacent horizontal beams.
6. The steel pipe sand-packed ultrahigh support according to claim 1, characterized in that: the steel pipe sections are connected through flanges.
7. The steel pipe sand-packed ultrahigh support according to claim 6, characterized in that: each steel pipe connecting node is provided with a flange plate, a plurality of stiffening plates are uniformly distributed along the circumferential direction of the flange plate, and the stiffening plates longitudinally extend to the outer surface of the steel pipe.
8. The steel pipe sand-packed type ultrahigh support frame of claim 7, characterized in that: the section of the stiffening plate is a straight triangle, and two right-angle sides are respectively connected with the flange plate and the outer surface of the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120338386.2U CN214656419U (en) | 2021-02-06 | 2021-02-06 | Steel pipe sand filling type ultrahigh support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120338386.2U CN214656419U (en) | 2021-02-06 | 2021-02-06 | Steel pipe sand filling type ultrahigh support |
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| Publication Number | Publication Date |
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| CN214656419U true CN214656419U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120338386.2U Active CN214656419U (en) | 2021-02-06 | 2021-02-06 | Steel pipe sand filling type ultrahigh support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482567A (en) * | 2022-01-17 | 2022-05-13 | 天元建设集团有限公司 | Reusable assembled steel support connecting device |
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2021
- 2021-02-06 CN CN202120338386.2U patent/CN214656419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482567A (en) * | 2022-01-17 | 2022-05-13 | 天元建设集团有限公司 | Reusable assembled steel support connecting device |
| CN114482567B (en) * | 2022-01-17 | 2023-02-28 | 天元建设集团有限公司 | Reusable assembled steel support connecting device |
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