CN209741771U - Top cover die of dam overflow weir - Google Patents
Top cover die of dam overflow weir Download PDFInfo
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- CN209741771U CN209741771U CN201821929286.1U CN201821929286U CN209741771U CN 209741771 U CN209741771 U CN 209741771U CN 201821929286 U CN201821929286 U CN 201821929286U CN 209741771 U CN209741771 U CN 209741771U
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- outer keel
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- steel pipe
- keel structure
- overflow weir
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Abstract
The utility model provides a dam overflow weir top cover mould, including steel pipe and the steel form that from top to bottom sets up by layers, the steel form is assembled by the unit mould of a plurality of pieces for curved surface structure and steel form, and the steel pipe upside arranges a plurality of outer keel structures to first with the steel pipe is perpendicular, interval evenly distributed, every pair of first outer keel structure is in the same place to the spot welding on the back of the body, and every pair of first outer keel structure and steel pipe welding, a plurality of outer keel structures of second are arranged rather than crossing perpendicularly in first outer keel structure upper strata, the outer keel structure interval evenly distributed of second and with the welding of first outer keel structure. The utility model discloses can effectively solve the problem that dam overflow table hole crest concrete droops and roughness is difficult to control. And the cover die can be made into a standard knot, so that the turnover is convenient and the operation is simple.
Description
Technical Field
The utility model belongs to hydraulic and hydroelectric engineering field especially relates to a dam overflow weir top cover mould.
Background
In the hydraulic concrete gravity dam construction field, the construction degree of difficulty of dam surface hole overflow surface is great, belongs to the construction at dam special construction position, and this position all adopts open WES practical weir type generally, specifically can divide into weir top section and weir face section, and the weir face section divide into the construction of slope smooth section, horizontal segment and anti-arc section again.
The conventional construction method of the dam surface hole is to separately construct a weir crest section and a weir surface section, wherein the weir crest section generally adopts a keel sample frame die surface method, the slope smooth section generally adopts a die drawing method or a template overturning and lifting method, the horizontal section generally adopts a keel sample frame die surface method, and the reverse arc section generally adopts a tool type combined steel template method.
The weir top section is constructed by adopting a keel sample frame surface touching method, and generally has some defects, the part is of a smooth curved surface structure, in the pouring construction, surface concrete can drop, the flatness is difficult to control, and the concrete quality defect of uneven or bulging is easily caused. Therefore, the utility model discloses a cover mould method is under construction, can overcome the problem of the concrete construction unevenness of dam overflow weir top section.
Disclosure of Invention
In order to overcome the above-mentioned not enough, the utility model provides a dam overflow weir top cover mould, including steel pipe and the steel form that from top to bottom the layering set up, the steel form is assembled by the unit mould of a plurality of pieces for curved surface structure and steel form and forms, a plurality of outer keel structure to first is arranged perpendicularly to the steel pipe upside and steel pipe, interval evenly distributed, every to welding together to the point-to-point of first outer keel structure, and every to first outer keel structure and steel pipe welding, a plurality of outer keel structure of second are arranged rather than crossing perpendicularly to first outer keel structure upper strata, second outer keel structure interval evenly distributed and with first outer keel structure welding.
Further, the unit mold is a P1515 steel mold.
Further, the steel template is formed by splicing 28 unit dies and is spliced into 2 transverse rows, each row of 14 unit dies, and the length and the width of the spliced curved surface expanded plate surface are 3 multiplied by 2.1 m.
Further, the steel pipe is specifically a steel pipe with a curve phi of 48mm, the back edges of the steel pipe are arranged in 4 rows, and each row of unit molds are provided with 2 steel pipes; the steel pipe upper strata is arranged 3 pairs of first outer keel structures perpendicularly.
Further, the first outer keel structure is specifically [12 channel steel, and 3 second outer keel structures are perpendicularly arranged on the upper layer of the first outer keel structure in an intersecting manner.
Further, the second outer keel structure is specifically I14I-steel.
Further, the inner side of the steel template is provided with a drawing rib inner support with the specification of phi 20mm and a supporting rib inner support with the specification of phi 25 mm.
Further, the outer layer of the second outer keel structure is provided with an attached vibrator for assisting in vibrating when concrete pouring is carried out.
The utility model has the advantages that:
The problems that the concrete at the top of the overflow surface hole of the dam falls down and the flatness is difficult to control can be effectively solved. And the cover die can be made into a standard knot, so that the turnover is convenient and the operation is simple.
Description of the drawings:
fig. 1 is a sectional structure view of the present invention.
Fig. 2 is a top view structural diagram of the present invention.
In the figure, 1 steel template, 2 steel pipes, 3 first outer keel structures and 4 second outer keel structures.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
As shown in fig. 1-2, dam overflow weir top cover mould, including steel pipe 2 and steel form 1 from top to bottom layer setting, steel form 1 is the curved surface structure and steel form 1 is assembled by the unit mould of a plurality of pieces and forms, 2 upsides of steel pipe and steel pipe 2 are arranged a plurality ofly to first outer keel structure 3 perpendicularly, interval evenly distributed, every pair of first outer keel structure 3 is back to back point welding together, and every pair of first outer keel structure 3 and steel pipe 2 welding, a plurality of second outer keel structures 4 are arranged rather than crossing perpendicularly in first outer keel structure 3 upper strata, 4 interval evenly distributed of second outer keel structure and with first outer keel structure 3 welding.
In specific implementation, the unit mold is a P1515 steel mold.
In specific implementation, the steel form 1 is formed by splicing 28 unit dies, the unit dies are spliced into 2 transverse rows, each row of 14 unit dies, and the length and the width of the spliced curved surface expanded plate surface are 3 multiplied by 2.1 m.
In specific implementation, the steel pipe 2 is a steel pipe with a curve phi of 48mm, the back edges of the steel pipe 2 are arranged in 4 rows, and each row of unit molds are provided with 2 steel pipes; the upper layer of the steel pipe 2 is vertically provided with 3 pairs of first outer keel structures 3.
In specific implementation, the first outer keel structure 3 is specifically a [12 channel steel, and 3 second outer keel structures 4 are vertically arranged on the upper layer of the first outer keel structure 3 in an intersecting manner.
In a specific implementation, the second outer keel structure 4 is specifically I14I-steel.
In specific implementation, the inner side of the steel template 1 is provided with a drawing rib inner support with the specification of phi 20mm and a supporting rib inner support with the specification of phi 25 mm.
In specific implementation, the attached vibrator is arranged on the outer layer of the second outer keel structure 4 for assisting in vibrating when concrete pouring is carried out.
The present application is not limited to the above-described embodiments, and any obvious modifications or alterations to the above-described embodiments may be made by those skilled in the art without departing from the spirit of the present application and the scope of the appended claims.
Through the utility model discloses successful application in the construction of Chongqing Pengshui hydropower station dam overflow surface barricade top concrete can effectively solve the problem that dam overflow table hole barricade top concrete tenesmus and roughness are difficult to control, has ensured the appearance quality of concrete.
9 meter holes are designed in the Chongqing Peng hydropower station dam, the number of the meter holes is 1-9 from left to right, meter hole drainage grooves are radially arranged, the included angle between the central lines of the adjacent meter holes is 2.6 degrees, and the crest elevation is 268.5 m. The gauge hole adopts an open WES practical weir shape, the weir crest elevation is 268.5m, the weir hole width is 14m, the gauge hole adopts trajectory jet energy dissipation, wherein the # 1 hole, the # 2 hole, the # 8 hole and the # 9 hole have the radius of reverse arc of 43.98m, the height of the nose sill is 253m, the trajectory jet angle is 25 degrees, and short piers with the length of 51m are arranged between the # 1 hole and the # 2 hole and between the # 8 hole and the # 9 hole; the reverse arc radius of the other 5 holes is 39.75m, the height of the nose ridge is 254m, the cantilever angle is 30 degrees, and long piers with the length of 81.18m are arranged among the holes.
In a specific implementation, the flow method of the construction comprises the following steps: s1, preprocessing, S2, steel bar erection and construction cover die covering, S3, concrete transportation and warehousing, S4, vibrating operation, S5 and maintenance work; wherein, in the step S1, in the pretreatment, the contact surface of the dam body roller compacted concrete is washed clean by high-pressure water and is fully roughened, so that the close combination of the dam crest concrete and the dam body roller compacted concrete is ensured; and S2, during steel bar erection and construction cover die covering, measuring the side line of the structure according to the construction detail drawing, and then binding the structural steel bars and erecting the construction cover die.
And S3, conveying and warehousing concrete, wherein the concrete is horizontally conveyed into a dump truck, and the vertical conveying is 30t of translational cable crane matched with 6 cubic vertical tanks, and then the chute is warehoused and poured.
And S4, in the vibrating operation, manually leveling and vibrating the concrete after being put into the bin, and manually finishing and calendaring the surface of the concrete.
And S5, in the maintenance work, immediately maintaining the concrete in a spraying mode after the concrete is poured and plastered to prevent plastic cracks from being generated due to too fast early dehydration, covering the concrete by two layers of gunny bags after 1-2 days, and watering for maintenance, wherein the maintenance period is not less than 28 days.
In the step S2, in the erection construction cover die, a die drawing rib inner drawing with the specification of phi 20mm is arranged on the inner side of the steel template, and a supporting rib inner support with the specification of phi 25mm is arranged.
In step S4, in order to ensure the appearance quality of the concrete, an attached vibrator is installed outside the construction cover mold to assist in vibrating.
Claims (8)
1. The utility model provides a dam overflow weir top cover mould, including steel pipe and the steel form that from top to bottom the layering set up, a serial communication port, the steel form is assembled by the unit mould of a plurality of pieces for curved surface structure and steel form, the steel pipe upside is arranged a plurality ofly with the steel pipe is perpendicular to first outer keel structure, interval evenly distributed, every pair of first outer keel structure is back to the point and is welded together, and every pair of first outer keel structure and steel pipe welding, a plurality of second outer keel structures are arranged rather than crossing perpendicularly to first outer keel structure upper strata, second outer keel structure interval evenly distributed and with first outer keel structure welding.
2. The dam overflow weir top cover mold of claim 1, wherein the unit molds are P1515 steel molds.
3. The dam overflow weir top cover die according to claim 1, wherein the steel die plate is formed by assembling 28 unit dies into 2 transverse rows of 14 unit dies, and the length and width of the assembled curved surface expanded plate surface is 3 x 2.1 m.
4. The dam overflow weir top cover mold according to claim 1, wherein the steel pipe is specifically a curved phi 48mm steel pipe, the steel pipe back ridges are arranged in 4 rows, and each row of unit molds is provided with 2; the steel pipe upper strata is arranged 3 pairs of first outer keel structures perpendicularly.
5. A dam overflow weir crest mould according to claim 1, wherein the first outer keel structure is in particular a [12 channel steel, and 3 second outer keel structures are arranged vertically intersecting the upper layer of the first outer keel structure.
6. A dam overflow weir capping form according to claim 1, wherein the second outer keel structure is in particular I14I-section steel.
7. The dam overflow weir top cover mold according to claim 1, wherein the inner side of the steel molding plate is provided with drawing ribs with the specification of phi 20mm and internally supported supporting ribs with the specification of phi 25 mm.
8. A dam overflow weir crest form as claimed in claim 1, wherein the second outer keel structure outer layer is provided with attachment vibrators to assist in vibrating during concrete pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929286.1U CN209741771U (en) | 2018-11-22 | 2018-11-22 | Top cover die of dam overflow weir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821929286.1U CN209741771U (en) | 2018-11-22 | 2018-11-22 | Top cover die of dam overflow weir |
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| Publication Number | Publication Date |
|---|---|
| CN209741771U true CN209741771U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821929286.1U Active CN209741771U (en) | 2018-11-22 | 2018-11-22 | Top cover die of dam overflow weir |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322287A (en) * | 2018-11-22 | 2019-02-12 | 中水电第十工程局（郑州）有限公司 | Dam overflow weir top cover form and construction method |
-
2018
- 2018-11-22 CN CN201821929286.1U patent/CN209741771U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322287A (en) * | 2018-11-22 | 2019-02-12 | 中水电第十工程局（郑州）有限公司 | Dam overflow weir top cover form and construction method |
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