CN210194644U - Spiral prestressed rigid steel pipe inner support - Google Patents
Spiral prestressed rigid steel pipe inner support Download PDFInfo
- Publication number
- CN210194644U CN210194644U CN201920675103.6U CN201920675103U CN210194644U CN 210194644 U CN210194644 U CN 210194644U CN 201920675103 U CN201920675103 U CN 201920675103U CN 210194644 U CN210194644 U CN 210194644U
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- steel pipe
- steel
- spiral
- support
- inner support
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 132
- 239000010959 steel Substances 0.000 title claims abstract description 132
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000004567 concrete Substances 0.000 abstract description 9
- 239000011378 shotcrete Substances 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a spiral prestressed rigid steel pipe inner support, belonging to the technical field of deep foundation pit support, which comprises a pre-buried steel plate, steel pipe supports and an adjusting washer arranged between two adjacent steel pipe supports; the embedded steel plate is embedded in the surface of the crown beam; connecting flanges are arranged at two ends of each section of steel pipe support, the connecting flanges of two adjacent sections of steel pipe supports are connected through high-strength bolts, and the connecting flanges of the steel pipe supports at the end parts are connected with the embedded steel plates through high-strength bolts; one of the steel pipe supports is an adjustable steel pipe support; the adjustable steel pipe support comprises two sections of steel pipes and a first spiral sleeve which is in threaded connection with the outside of the two sections of steel pipes; the internal threads at the two ends of the first spiral sleeve are opposite; the outer edge of the adjusting washer is provided with a groove corresponding to the high-strength bolt. The spiral prestressed rigid steel pipe inner support has the advantages of higher overall rigidity, small deformation, safety and reliability, and can be compared with a concrete support to replace the concrete support.
Description
Technical Field
The utility model belongs to the technical field of deep basal pit struts, a support in spiral prestressing force rigidity steel pipe is specifically disclosed.
Background
The steel support has the obvious advantages of small dead weight, convenient installation and removal, capability of supporting along with excavation according to the earth excavation progress, simple and convenient operation, no need of equal strength, repeated use and the like, and is widely applied to the strip foundation pit. However, in recent years, with frequent accidents of foundation pit collapse in a soft soil stratum, the steel support has the defects of small rigidity, poor integrity and the like due to the fact that the support is in a hinged state, and therefore a traditional internal support mode is gradually replaced by a combined support mode of the concrete support and the steel support. However, the concrete support still has the defects of heavy self weight, incapability of reusing materials, difficulty in mounting and dismounting, long time consumption, long time required in the whole construction process from reinforcing steel bars, templates, pouring to maintenance, incapability of supporting along with excavation, no use of wall deformation control and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an in spiral prestressing force rigidity steel pipe support that has great bulk rigidity, warp for a short time, safe and reliable to improve the problem that current steel shotcrete exists, replace the concrete shotcrete.
In order to achieve the purpose, the utility model provides a spiral prestressed rigid steel pipe inner support, which comprises a pre-buried steel plate, steel pipe supports and an adjusting washer arranged between two adjacent steel pipe supports; the embedded steel plate is embedded in the surface of the crown beam; connecting flanges are arranged at two ends of each section of steel pipe support, the connecting flanges of two adjacent sections of steel pipe supports are connected through high-strength bolts, and the connecting flanges of the steel pipe supports at the end parts are connected with the embedded steel plates through high-strength bolts; one of the steel pipe supports is an adjustable steel pipe support; the adjustable steel pipe support comprises two sections of steel pipes and a first spiral sleeve which is in threaded connection with the outside of the two sections of steel pipes; the internal threads at the two ends of the first spiral sleeve are opposite; the outer edge of the adjusting washer is provided with a groove corresponding to the high-strength bolt.
Furthermore, a batten plate is arranged between the connecting flange and the outer wall of the steel pipe support.
Furthermore, bolt holes are reserved in the pre-buried steel plate corresponding to the support positions of the connecting steel pipes, and nuts corresponding to the bolt holes are welded on two sides of the pre-buried steel plate in a spot welding mode.
Further, a protective sleeve is welded outside the nut facing the crown beam.
Furthermore, anchor bars are welded on the side faces, facing the crown beam, of the embedded steel plates; and a cavity is formed when the crown beam is poured, and the anchor bars extend into the cavity.
Furthermore, the spiral prestress rigid steel pipe inner support also comprises rigid inclined struts arranged on two sides of the steel pipe support.
Furthermore, the steel pipe support and the crown beam are provided with ear plates; the two ends of the rigid inclined strut (7) are hinged on the ear plates.
Further, the rigid inclined strut comprises two sections of steel pipes and a second spiral sleeve which is in threaded connection with the outside of the two sections of steel pipes; the internal threads at the two ends of the second spiral sleeve are opposite.
Further, the diameter of the steel pipe support is 800mm, the steel pipe support comprises a standard joint and an adjusting joint, the length of the standard joint is 6m, and the length of the adjusting joint is 3m, 2m, 1m, 0.5m, 0.3m or 0.2 m; the adjusting stroke of the first spiral sleeve does not exceed 300 mm.
The utility model has the advantages that:
the utility model provides a spiral prestressing force rigidity steel pipe internal support, it is little to have current steel shotcrete dead weight, the installation is demolishd conveniently, can be along with digging along with propping according to the earthwork excavation progress, easy operation conveniently need not wait strong and repetitious usage's advantage, and come to finely tune the length that the steel pipe supported through rotatory first spiral casing, exert prestressing force for the steel pipe supports simultaneously, guarantee that overall structure has sufficient holding power, and be non-articulated state when supporting, great bulk stiffness has, it is little to warp, safety and reliability, can compare favourably the concrete shotcrete, replace the concrete shotcrete.
Drawings
Fig. 1 is a front view of an inner support of a spiral prestressed rigid steel pipe according to an embodiment of the present invention;
FIG. 2 is a top view of the inner support of the spiral prestressed rigid steel pipe shown in FIG. 1;
FIG. 3 is a front view of a pre-buried steel plate in the support of the spiral prestressed rigid steel pipe shown in FIG. 1;
FIG. 4 is a side view of the pre-buried steel plate shown in FIG. 3;
FIG. 5 is an enlarged view of a portion C of the pre-buried steel plate shown in FIG. 4;
fig. 6 is a front view of an adjusting washer in the support of the spiral prestressed rigid steel pipe shown in fig. 1.
In the figure: 1, pre-burying a steel plate; 1 a-bolt hole; 1 b-a protective sleeve; 1 c-anchor bar; 2-supporting the steel pipe; 2 a-batten plate; 3-adjusting the washer; 4-a connecting flange; 5-high-strength bolt; 6-a first spiral sleeve; 7-rigid diagonal bracing; 8-ear plate; 9-a second helical sleeve; a-a crown beam; b-building envelope.
Detailed Description
The embodiment provides a spiral prestressed rigid steel pipe inner support, which comprises an embedded steel plate 1, steel pipe supports 2 and an adjusting washer 3, wherein the adjusting washer 3 is arranged between every two adjacent steel pipe supports 2; the embedded steel plate 1 is embedded in the surface of the crown beam A; two ends of each section of the steel pipe support 2 are respectively provided with a connecting flange 4, the connecting flanges 4 of two adjacent sections of the steel pipe supports 2 are connected through high-strength bolts 5, and the connecting flange 4 of the steel pipe support 2 positioned at the end part is connected with the embedded steel plate 1 through the high-strength bolt 5; one section of the multi-section steel pipe support 2 is an adjustable steel pipe support; the adjustable steel pipe support comprises two sections of steel pipes and a first spiral sleeve 6 which is in threaded connection with the outside of the two sections of steel pipes; the internal threads at the two ends of the first spiral sleeve 6 are opposite, and the two sections of steel pipes can extend outwards or retract inwards by rotating the first spiral sleeve 6; the outer edge of the adjusting washer 3 is provided with a groove corresponding to the high-strength bolt 5. When the distance value between the crown beams A is a non-integral multiple of the length value of the steel pipe supports 2 and the allowance is small, the adjusting washer 3 can be added between the two steel pipe supports 2, and the first spiral sleeve 6 is rotated for adjustment.
Above-mentioned spiral prestressing force rigidity steel pipe is supported, it is little to have current steel shotcrete dead weight, it is convenient to install and remove, can be along with digging along with propping according to the earthwork excavation progress, easy operation is convenient need not wait strong and repeatedly usable's advantage many times, and come to finely tune the length of steel shotcrete 2 through rotatory first spiral casing 6, exert prestressing force for steel shotcrete 2 simultaneously, guarantee that overall structure has sufficient holding power, and be non-articulated state when supporting, great bulk stiffness has, it is little to warp, safety and reliability, can compare favourably the concrete shotcrete, replace the concrete shotcrete.
Further, a gusset plate 2a is provided between the connecting flange 4 and the outer wall of the steel pipe support 2 to increase the connecting strength therebetween.
Further, bolt holes 1a are reserved in the positions, corresponding to the connecting steel pipe supports 2, of the embedded steel plates 1, and nuts corresponding to the bolt holes are welded to two sides of the embedded steel plates 1 in a spot mode, so that the high-strength bolts 5 can be screwed into the embedded steel plates 1 conveniently.
Further, the protective sleeve 1b is welded outside the nut facing the crown beam a to prevent jamming of the nut when the crown beam a is poured.
Further, anchor bars 1c are welded on the side faces, facing the crown beam A, of the embedded steel plates 1; and a cavity is formed when the crown beam A is poured, and the anchor bars 1c extend into the cavity to ensure that the embedded steel plate 1 and the crown beam A are connected into a whole.
Further, the spiral prestressed rigid steel pipe inner support further comprises rigid inclined struts 7 arranged on two sides of the steel pipe support 2, so that the connection rigidity of the steel pipe support 2 and the crown beam A is improved.
Specifically, the steel pipe support 2 and the crown beam A are provided with ear plates 8; the two ends of the rigid diagonal brace 7 are hinged on the ear plates 8.
Further, the rigid diagonal brace 7 comprises two sections of steel pipes and a second spiral sleeve 9 which is in threaded connection with the outside of the two sections of steel pipes; the internal threads at the two ends of the second helical sleeve 9 are opposite. The stress of the rigid inclined strut 7 is adjusted by rotating the second spiral sleeve 9, and the rigid connection of the steel pipe support 3 and the crown beam A is ensured.
Further, the diameter of the steel pipe support 2 is 800mm, the steel pipe support comprises a standard joint and an adjusting joint, the length of the standard joint is 6m, the length of the adjusting joint is 3m, 2m, 1m, 0.5m, 0.3m or 0.2m, and when the allowance is smaller than 0.2m, the adjusting joint is adjusted by using an adjusting washer 3; in order to ensure that the steel pipe support 2 is stressed, the adjusting stroke of the first spiral sleeve 6 does not exceed 300 mm.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the present invention, or directly or indirectly applied to other related technical fields, and all included in the same way in the protection scope of the present invention.
Claims (9)
1. A spiral prestressed rigid steel pipe inner support is characterized by comprising an embedded steel plate (1), steel pipe supports (2) and an adjusting washer (3) arranged between every two adjacent steel pipe supports (2);
the embedded steel plate (1) is embedded in the surface of the crown beam (A);
connecting flanges (4) are arranged at two ends of each section of steel pipe support (2), the connecting flanges (4) of two adjacent sections of steel pipe supports (2) are connected through high-strength bolts (5), and the connecting flange (4) of the steel pipe support (2) positioned at the end part is connected with the embedded steel plate (1) through the high-strength bolt (5);
one section of the steel pipe supports (2) is an adjustable steel pipe support;
the adjustable steel pipe support comprises two sections of steel pipes and a first spiral sleeve (6) which is in threaded connection with the outside of the two sections of steel pipes;
the internal threads at the two ends of the first spiral sleeve (6) are opposite;
the outer edge of the adjusting washer (3) is provided with a groove corresponding to the high-strength bolt (5).
2. A helical prestressed rigid steel tube inner support according to claim 1, characterized in that a gusset plate (2 a) is provided between the connecting flange (4) and the outer wall of the steel tube support (2).
3. The spiral prestressed rigid steel pipe inner support according to claim 1, wherein bolt holes (1 a) are reserved in positions of the embedded steel plates (1) corresponding to the steel pipe supports (2), and nuts corresponding to the bolt holes are spot-welded on two sides of the embedded steel plates (1).
4. A helical prestressed rigid steel tube inner support according to claim 3, characterized in that the protective sleeve (1 b) is welded outside the nut towards the crown beam (a).
5. The spiral prestressed rigid steel pipe inner support according to claim 4, characterized in that anchor bars (1 c) are welded to the side of the embedded steel plate (1) facing the crown beam (A);
and a cavity is formed when the crown beam (A) is poured, and the anchor bars (1 c) extend into the cavity.
6. A helical prestressed rigid steel pipe inner support according to claim 1, further comprising rigid diagonal braces (7) disposed at both sides of the steel pipe support (2).
7. A spiral prestressed rigid steel pipe inner support according to claim 6, characterized in that said steel pipe supports (2) and crown beams (A) are provided with ear plates (8);
and two ends of the rigid inclined strut (7) are hinged on the ear plates (8).
8. A helical prestressed rigid steel tube inner support according to claim 7, characterized in that said rigid diagonal brace (7) comprises two steel tubes and a second helical sleeve (9) threaded outside the two steel tubes;
the internal threads of the two ends of the second spiral sleeve (9) are opposite.
9. A helical prestressed rigid steel tube inner support according to claim 1, characterized in that the steel tube support (2) has a diameter of 800mm, including a standard knot having a length of 6m and an adjustment knot having a length of 3m, 2m, 1m, 0.5m, 0.3m or 0.2 m;
the adjusting stroke of the first spiral sleeve (6) is not more than 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920675103.6U CN210194644U (en) | 2019-05-13 | 2019-05-13 | Spiral prestressed rigid steel pipe inner support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920675103.6U CN210194644U (en) | 2019-05-13 | 2019-05-13 | Spiral prestressed rigid steel pipe inner support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210194644U true CN210194644U (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920675103.6U Expired - Fee Related CN210194644U (en) | 2019-05-13 | 2019-05-13 | Spiral prestressed rigid steel pipe inner support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210194644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502160A (en) * | 2020-11-24 | 2021-03-16 | 中铁第四勘察设计院集团有限公司 | Post-tensioning precast concrete supporting member, inner supporting system and construction method |
-
2019
- 2019-05-13 CN CN201920675103.6U patent/CN210194644U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502160A (en) * | 2020-11-24 | 2021-03-16 | 中铁第四勘察设计院集团有限公司 | Post-tensioning precast concrete supporting member, inner supporting system and construction method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200327 |