CN218204403U - Arch dam surface hole radial gate supports girder bearing structure - Google Patents
Arch dam surface hole radial gate supports girder bearing structure Download PDFInfo
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- CN218204403U CN218204403U CN202221880221.9U CN202221880221U CN218204403U CN 218204403 U CN218204403 U CN 218204403U CN 202221880221 U CN202221880221 U CN 202221880221U CN 218204403 U CN218204403 U CN 218204403U
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Abstract
The utility model discloses an arch dam surface hole radial gate support girder supporting structure, which comprises an anchoring system, a supporting system and an operating platform, wherein the anchoring system comprises a support and an anchor bar, and the anchor bar is fixed on the support; the operating platform is arranged at the upper part of the support; the supporting system comprises a base and a steel truss, the steel truss is in a right-angled triangle shape, a first right-angle side steel frame of the steel truss is fixed with the support through the base, a second right-angle side steel frame of the steel truss protrudes out of the first right-angle side steel frame to form an extending part, and the steel truss is welded with the operating platform through the extending part; the bevel edge steel frame of the steel truss is suspended. The utility model discloses simple structure, installation are dismantled conveniently, under the prerequisite of guaranteeing the bearing structure reliability, construction is accelerated, efficiency improves.
Description
Technical Field
The utility model relates to a water conservancy water and electricity construction technical field especially relates to a radial gate supports girder concrete placement bearing structure.
Background
With the rapid development and utilization of water resources in China, hydropower stations providing clean energy for national development begin to be transferred to western complex mountainous areas for construction, more and more water-blocking dams are of a dam type selected from concrete hyperbolic arch dams, flood-discharge buildings of the concrete hyperbolic arch dams generally adopt open overflow meter holes, and the meter holes are provided with arc door supporting girders. The arc door supporting girder concrete pouring inevitably needs to adopt a supporting structure, and the rigidity and the strength of the supporting structure and the firm and stable building are extremely important.
Traditional arch dam surface hole radial gate supports bearing structure construction of girder, for surface hole overflow surface or reservation overflow surface step (support girder pours and accomplishes and demolish the overflow surface second stage concrete construction after the bearing support of demolising) that accomplish from the construction and set up full hall scaffold braced system + template system, have following technical defect: 1. set up full hall scaffold braced system + template system, used parts such as a large amount of steel frame pipes, fasteners, the construction is comparatively loaded down with trivial details, and the resource that drops into is more, and bearing frame demolishs the engineering volume big. 2. The erection height is high, the span is large, the construction is complicated, and the safety risk is prominent; 3. the bearing frame has large installation and dismantling engineering quantity and long construction time, and has great influence on the construction period of adjacent structures such as an overflow surface, a gate pier and the like.
In addition, a Chinese patent publication No. CN 208517906U discloses a formwork structure for supporting a girder of an arch dam in 2019, 2 and 19 months. The arch dam support girder template structure comprises an upstream face template and a downstream face template, wherein the upstream face template is arranged on the upstream side of the downstream face template; the upstream face template comprises a first supporting truss and a second supporting truss; the bottom of the first support truss is embedded in the concrete of the gate piers on two sides; the downstream face template comprises a third supporting truss and a combined prefabricated template; the bottom of the third support truss is fixed on gate piers on two sides, and the top of the third support truss is abutted against the downstream side of the lower part of the support girder through a prefabricated panel. The utility model discloses above-mentioned steel truss preparation is long, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect of above-mentioned prior art, the utility model provides a radial gate supports girder concrete placement bearing structure, bearing structure relies on the gate pier side wall, breaks away from separately the construction with the overflow surface, simple structure, construction safe and reliable, it is convenient fast, the resource drops into fewly, and the work efficiency is high, can accelerate arch dam construction period.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a concrete pouring support structure for an arc door supporting girder comprises an anchoring system, a support system and an operating platform, wherein the anchoring system comprises a support and anchor bars, and the anchor bars are fixed on the support; the operating platform is arranged at the upper part of the support; the supporting system comprises a base and a steel truss, the steel truss is in a right-angled triangle shape, a first right-angle steel frame of the steel truss is fixed with the support through the base, a second right-angle steel frame of the steel truss protrudes out of the first right-angle steel frame to form an extending part, and the steel truss is welded with the operating platform through the extending part; the bevel edge steel frame of the steel truss is suspended. One end of the base and the anchor bars are embedded in the first concrete pouring.
For convenience of construction, the steel trusses are multiple, at least three, and the multiple steel trusses are assembled into a whole at intervals, and the assembled whole is hung on a construction working face. And (4) splicing 7 frames into a whole according to the pre-buried size, hoisting to a bin number to be installed by adopting a cable at 30t after the preparation work of the site bin number has installation conditions, and finally hoisting by adopting a bin surface at 25t for installation.
And H-shaped steel beams are laid on second right-angle side steel frames of the multiple steel trusses, channel steel is laid on the H-shaped steel beams, and a steel template is laid on the channel steel.
Preferably, the I-shaped steel beam and the channel steel are leveled through a wedge.
In order to improve the stability, the concrete anchor also comprises a pull rod ground anchor which is pre-embedded in the concrete, and the pull rod ground anchor is fixedly connected with the extending part through a steel bar. And the second right-angle steel frame is used for bearing the weight of the concrete on the second right-angle steel frame.
In order to improve stability, anchor bars are fixed on the extending parts. And the extending anchor bars and the operating platform are embedded in the second concrete pouring.
Preferably, the anchor bars are pi-shaped.
The utility model has the advantages of it is following:
1. the utility model discloses a structure is simple and easy reliable, easily installation and dismantlement, engineering volume reduce, under the prerequisite of guaranteeing the bearing structure reliability, the construction is accelerated, efficiency improves, is applicable to arch dam arc door and supports girder concrete placement bearing structure.
2. The utility model discloses the shaped steel component and the concrete contact surface who bury the concrete adopt the thick heat preservation of 5cm to be pieced together, paste in the template, and the back is demolishd in the later stage of being convenient for, adopts the pre-shrinkage mortar to handle because of the pre-buried concrete defect that causes of shaped steel.
3. The utility model discloses bearing structure supports the girder concrete through the pre-buried arc door of having solved of table hole side wall and pours and table hole overflow face cross construction problem to and the arc door supports the problem that the girder concrete bearing supported.
4. The utility model discloses the bearing structure installation degree of difficulty is little, and the material drops into fewly, has reduced traditional construction framed bent and has set up the process, has not only practiced thrift material equipment cost, has reduced safe risk, has accelerated concrete construction period simultaneously.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a side view of the triangular steel truss of the present invention;
fig. 4 is a front view of the anchor bar of the present invention.
The mark in the figure is: the method comprises the following steps of 1-a support, 2-a heat preservation quilt, 3-an anchor bar, 4-a base, 5-an operation platform, 6-a steel truss, 6 a-a first right-angle side steel frame, 6 b-a second right-angle side steel frame, 6 c-a stretching part, 7-channel steel, 8-an I-shaped steel beam, 9-a steel template and 10-a pull rod ground anchor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following examples, which are conventional unless otherwise specified, and the materials may be commercially available from the disclosure unless otherwise specified.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a concrete pouring support structure for a curved door support girder comprises an anchoring system, a support system and an operating platform 5, wherein the anchoring system comprises a support 1 and an anchor bar 3, and the anchor bar 3 is fixed on the support 1; the operating platform 5 is arranged at the upper part of the support 1; the supporting system comprises a base 4 and a steel truss 6, the steel truss 6 is in a right-angled triangle shape, a first right-angle steel frame 6a of the steel truss 6 is fixed with the support 1 through the base 4, a second right-angle steel frame 6b of the steel truss 6 protrudes out of the first right-angle steel frame 6a to form a protruding part 6c, and the steel truss 6 is connected with the operating platform 5 through the protruding part 6 c; the bevel steel frame of the steel truss 6 is suspended. The anchor bars 3 are welded on the contact surface of the concrete-embedded section steel member and the concrete, and are spliced on the template by the heat-insulating quilt 2 with the thickness of 5cm, so that after later-stage dismantling is facilitated, concrete defects caused by embedding of the section steel are treated by adopting pre-shrinking mortar; the base 4 is welded to the support 1.
6 many pin of steel truss, the utility model discloses a 7 pin, 7 pin steel truss (6) interval assemble as a whole, and the whole hoist and mount of assembling are in the construction operation face. After the site bin number preparation work is finished and the installation conditions are met, hoisting and transporting the site bin number to a bin number to be installed by adopting a 30t cable, and finally, hoisting and installing the site bin number by adopting a 25t bin surface.
I-shaped steel beams 8 are laid on second right-angle side steel frames 6b of the multiple steel trusses 6, channel steel 7 is laid on the I-shaped steel beams 8, and steel templates 9 are laid on the channel steel 7. The I-shaped steel beam 8 and the channel steel 7 are leveled through the wedges.
In order to improve the stability, the anchor block further comprises a pull rod ground anchor 10 pre-embedded in the concrete, and the pull rod ground anchor 10 is fixedly connected with the extending portion 6c through a steel bar.
The anchor bar 3 is fixed to the extension portion 6 c. The anchor bars 3 are pi-shaped.
The utility model discloses a construction steps as follows:
1. and after the right-angle triangular steel truss 6 is manufactured and accepted, assembling the right-angle triangular steel truss into a whole according to every 7 trusses with the pre-buried size, hoisting and transporting the right-angle triangular steel truss to a bin number to be installed by adopting a 30t cable after the preparation work of the site bin number has installation conditions, and finally hoisting and installing the right-angle triangular steel truss by adopting a 25t bin surface.
2. When the right-angled triangle steel truss 6 is installed, all templates in the previous bin are firstly removed, an I-shaped steel beam 4 with the bottom I20a of the triangle steel truss is installed, a triangle steel truss installation platform 5 is erected in the bin and is checked, after the height and the quality are not problematic, the steel truss 6 which is assembled in advance is hoisted into the bin to be installed, a pull rod ground anchor 10 and anchor bars 3 are adopted to reinforce after the checking is qualified, and gate pier surface layer steel bars and templates are installed after the triangle steel truss 6 is installed. All the profile steel components embedded in the concrete are in contact with the concrete surface, and the heat preservation quilt 2 with the thickness of 5cm is spliced and attached to the template, so that after the later-stage dismantling is facilitated, the concrete defects caused by profile steel embedding are treated by adopting pre-shrinking mortar.
(3) After the steel truss 6 is arranged, when the next bin is constructed, channel steel 7 serving as a leveling support is arranged at the upper part of the truss along the water flow direction, the distance is set to be 0.5m, and the part is encrypted; the upper part of the channel steel 7 adopts an I10 steel beam 8 as a supporting beam (the distance is 0.75m, and the axial lead is consistent with that of a triangular steel truss), and the channel steel 7 is connected with the I steel beam 8 by adopting a super wedge. The components are connected by full welding, and the height of the welding line is 6mm.
The utility model discloses a table hole side wall is pre-buried, installation braced system has solved the arc door and has supported girder concrete placement and the alternately construction problem of table hole overflow face to and the arc door supports the problem that girder concrete bearing supported. The construction of the arc door supporting girder concrete does not influence the construction of an overflow surface, the installation difficulty of the arch dam arc door supporting girder supporting system is small, the material investment is low, the traditional construction bent frame erection procedure is reduced, the material equipment cost is saved, the safety risk is reduced, the construction period of the arch dam is shortened, and the method has important significance for the on-schedule or advanced power generation of the engineering.
Claims (7)
1. The utility model provides an arch dam table hole radial gate supports girder bearing structure which characterized in that: the anchor system comprises an anchoring system, a supporting system and an operating platform (5), wherein the anchoring system comprises a support (1) and an anchor bar (3), and the anchor bar (3) is fixed on the support (1); the operating platform (5) is arranged at the upper part of the support (1); the supporting system comprises a base (4) and a steel truss (6), the steel truss (6) is in a right-angled triangle shape, a first right-angle side steel frame (6 a) of the steel truss (6) is fixed with the support (1) through the base (4), a second right-angle side steel frame (6 b) of the steel truss (6) protrudes out of the first right-angle side steel frame (6 a) to form a protruding part (6 c), and the steel truss (6) is welded with the operating platform (5) through the protruding part (6 c); the bevel edge steel frame of the steel truss (6) is suspended.
2. The arch dam surface opening radial gate support girder support structure according to claim 1, wherein: the steel trusses (6) are multiple, the multiple steel trusses (6) are assembled into a whole at intervals, and the assembled whole is hung on a construction working face.
3. An arch dam surface opening radial gate support girder support structure according to claim 2, wherein: h-shaped steel beams (8) are laid on second right-angle side steel frames (6 b) of the multiple steel trusses (6), channel steel (7) are laid on the H-shaped steel beams (8), and steel templates (9) are laid on the channel steel (7).
4. The arch dam surface opening radial gate support girder support structure of claim 3, wherein: the I-shaped steel beam (8) and the channel steel (7) are leveled through wedges.
5. The arch dam surface opening radial gate support girder support structure of claim 4, wherein: still including pre-buried pull rod earth anchor (10) in the concrete, pull rod earth anchor (10) pass through steel wire and extension (6 c) fixed connection.
6. An arch dam surface opening radial gate support girder support structure according to claim 4, wherein: and anchor bars (3) are fixed on the extending parts (6 c).
7. An arch dam surface opening radial gate support girder support structure according to claim 6, wherein: the anchor bars (3) are shaped like pi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221880221.9U CN218204403U (en) | 2022-07-20 | 2022-07-20 | Arch dam surface hole radial gate supports girder bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221880221.9U CN218204403U (en) | 2022-07-20 | 2022-07-20 | Arch dam surface hole radial gate supports girder bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218204403U true CN218204403U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221880221.9U Active CN218204403U (en) | 2022-07-20 | 2022-07-20 | Arch dam surface hole radial gate supports girder bearing structure |
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| Country | Link |
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| CN (1) | CN218204403U (en) |
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2022
- 2022-07-20 CN CN202221880221.9U patent/CN218204403U/en active Active
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