CN214658356U - A prevention of seepage fretwork stair passageway for going up infiltration ground behind reservoir dam - Google Patents
A prevention of seepage fretwork stair passageway for going up infiltration ground behind reservoir dam Download PDFInfo
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- CN214658356U CN214658356U CN202022964177.7U CN202022964177U CN214658356U CN 214658356 U CN214658356 U CN 214658356U CN 202022964177 U CN202022964177 U CN 202022964177U CN 214658356 U CN214658356 U CN 214658356U
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- angle steel
- galvanized angle
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Abstract
An impermeable hollowed-out stair channel for a post-dam infiltration foundation, comprising: the stair sections, the supporting beams, the upright posts and the railings; the stair section comprises a plurality of hollow-out platform stages, two ends of the stair section are respectively provided with a supporting beam which is parallel to each other, the bottom of each supporting beam is provided with a stand column which is symmetrical to each other, and one side of the top of each supporting beam is provided with a handrail; each hollowed-out step section comprises four sections of international galvanized angle steel with equal length, the international galvanized angle steel at the edge of the top of the inner side of the supporting beam is provided with a warning coating, two sections of international galvanized angle steel with the same interval are additionally arranged in the horizontal direction of the international galvanized angle steel with the warning coating, and one section of international galvanized angle steel with the same interval is additionally arranged in the vertical direction of the international galvanized angle steel with the warning coating. The utility model has simple construction, stability and safety; the rain, snow and sundries on the upper part of the stairs can be prevented from being accumulated, the water seepage and the icing of the foundation on the lower part of the stairs can be prevented, and the traffic safety of dam operation and maintenance personnel is improved.
Description
Technical Field
The utility model belongs to the technical field of pumped storage power station dam prevention of seepage, concretely relates to prevention of seepage fretwork stair passageway that is used for upper reservoir dam back infiltration ground.
Background
The pumped storage power station plays important roles of peak regulation, frequency modulation, accident reserve and the like in a power grid and comprises an upper reservoir, a lower reservoir, a water delivery system, an underground workshop, a switch station and the like. The upper reservoir is generally located in a high-altitude mountain area, and the water retaining dam is generally a roller compacted concrete gravity dam, a concrete panel rock-fill dam or a conventional concrete gravity dam. The dam site of the upper reservoir dam is positioned in a mountain top water collecting basin, the lines of peripheral mountain bodies and underground water are higher, and a multistage mortar masonry stair channel is usually built behind the dam for realizing the safe observation of the gravity dam and the operation of a pumping back pump room behind the dam. However, the existing masonry passage generally has the following defects: 1. because of more rain and snow in the reservoir area, the natural water seepage of the mountain is more abundant, and the seepage of the mountain behind the foundation or the dam causes the stair surface to be moist or the existence of open water, so that the dam is frozen in winter, and the traffic safety of dam operation and maintenance personnel is influenced. 2. The local foundation backfill soil is easy to be not compact, and the grouted stone side slope or the stair surface is easy to deform or collapse. 3. It is easy to breed weeds, shrubs and other vegetation.
SUMMERY OF THE UTILITY MODEL
For solving the above problem that prior art exists, the utility model provides a prevention of seepage fretwork stair passageway for going up infiltration ground behind reservoir dam, this passageway have excellent antiskid, prevention of seepage, anti-icing, easy advantage such as maintain, firmly durable.
The utility model discloses specifically adopt following technical scheme:
an impermeable hollowed-out stair channel for a post-dam infiltration foundation, comprising: the stair sections, the supporting beams, the upright posts and the railings;
the stair section comprises a plurality of hollow-out platform stages, two ends of the stair section are respectively provided with a supporting beam which is parallel to each other, the bottom of the supporting beam is provided with stand columns which are symmetrical to each other, and one side of the top of the supporting beam is provided with a handrail;
every fretwork step section includes the national standard galvanized angle steel that four sections length equals, the national standard galvanized angle steel of the inboard top edge of a supporting beam is equipped with the warning coating, still be equipped with the same national standard galvanized angle steel in two sections intervals in addition on the national standard galvanized angle steel horizontal direction that is equipped with the warning coating, still be equipped with the same national standard galvanized angle steel in one section interval in addition on the national standard galvanized angle steel vertical direction that is equipped with the warning coating.
Preferably, the edge of the top of the inner side of the support beam is superposed with the right-angle vertex of the national standard galvanized angle steel provided with the warning coating; and two top corners of the bottom angle of the second section of national standard galvanized angle steel in the horizontal direction of the national standard galvanized angle steel provided with the warning coating coincide with the edge of the bottom of the inner side of the supporting beam.
Preferably, the length of the national standard galvanized angle steel is set to be 120cm, the width is set to be 5cm, and the height is set to be 5 cm; the distance between the national standard galvanized angle steels is set to be 7.5 cm; the length of the hollow step is 120cm, and the width of the hollow step is 30 cm.
Preferably, the stair sections are higher than the primary pulp stone stair with a difference of 30 cm.
Preferably, the height of the support beam made by welding two sections of national standard channel steel is 20 cm; national standard channel-section steel height sets up to 10cm, and the width sets up to 4.8cm, and thickness sets up to 5.3mm, supporting beam's recess outwards sets up.
Preferably, the height of the upright columns made of national standard channel steel is 30cm, and the horizontal distance between every two upright columns is set to be 150 cm.
Preferably, the stand bottom is connected in the crab-bolt of magma stone stair with the anchor, the recess of stand inwards sets up.
Preferably, the handrail made of the national standard hot-dip galvanized steel pipe is provided with a warning coating, and the warning coating comprises a handrail, a handrail cross brace and a handrail upright post; the height of each railing post is 120cm, the horizontal distance between every two railing posts is 150cm, the tops of the two railing posts are fixedly connected by a railing, the middle part of the railing is provided with a warning object, and the middle parts of the two railing posts are fixedly connected by a railing cross arm; the wall thickness of the national standard hot-dip galvanized steel pipe is 3.8 mm.
Preferably, the surfaces of the stair sections, the support beams, the columns and the railings are coated with an anti-corrosion agent.
Preferably, the stair sections, the support beams, the upright posts and the railings are of an integrated structure.
Compared with the prior art, the utility model has the advantages of:
through using all kinds of shaped steel concatenation welding, form fretwork stair surface, both can prevent that stair upper portion sleet and debris from piling up, can prevent again that stair lower part ground infiltration from freezing, can effectively avoid surperficial snow and freezing, effectively avoid the rainy season stair surface wet and slippery, avoid the magma stone stair to maintain in the future, have stronger aesthetic property and practicality, to a great extent has improved important hydraulic structure health level such as upper reservoir dam, has improved dam fortune dimension personnel safety of passing.
The successful case of the anti-seepage hollow stair channel becomes an important supplement of the anti-seepage technology of the pumped storage power station dam, and has good reference significance for similar anti-seepage projects in the future.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a connection diagram of the stage of the hollow-out table of the present invention;
FIG. 3 is a side view of the stage of the hollow-out table of the present invention;
FIG. 4 is a front view of the stage of the hollow-out table of the present invention;
FIG. 5 is a top view of the stage of the hollow-out table of the present invention;
FIG. 6 is a front view of the middle support beam and the vertical column according to the present invention;
FIG. 7 is a side view of the middle support beam and the vertical column according to the present invention;
fig. 8 is a schematic structural view of the middle rail of the present invention.
In the figure:
1-stair sections;
2-a support beam;
3-upright column;
4-a railing;
5-a stage of hollowing out the table;
6-national standard galvanized angle steel;
7-building stone stairs with virgin pulp;
8-handrail;
9-railing cross brace;
10-railing post.
Detailed Description
To further describe the technical features and effects of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments.
In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an anti-seepage hollow stair passage for a seepage foundation behind an upper reservoir dam comprises: stair sections 1, support beams 2, columns 3 and balustrades 4. The surfaces of the stair sections 1, the supporting beams 2, the upright posts 3 and the railings 4 are coated with anti-corrosion agents and are of an integrated structure.
Referring to fig. 2 to 5, the stair section 1 includes a plurality of hollow steps 5, wherein two ends of the stair section 1 are respectively provided with a support beam 2 parallel to each other, the bottom of the support beam 2 is provided with a column 3 symmetrical to each other, one side of the top of the support beam 2 is provided with a handrail 4, and the stair section 1 is higher than the raw stone stair 7 by 30 cm.
Each hollow platform stage 5 comprises national standard galvanized angle steel 6 with four sections of equal length, the national standard galvanized angle steel 6 at the edge of the top of the inner side of the supporting beam 2 is provided with a warning coating, two sections of national standard galvanized angle steel 6 with the same interval are additionally arranged in the horizontal direction of the national standard galvanized angle steel 6 with the warning coating, and one section of national standard galvanized angle steel 6 with the same interval is additionally arranged in the vertical direction of the national standard galvanized angle steel 6 with the warning coating.
The edge of the top of the inner side of the support beam 2 is superposed with the right-angled peak of the national standard galvanized angle steel 6 provided with the warning coating; two vertexes of the base angle of the second section of national standard galvanized angle steel 6 in the horizontal direction of the national standard galvanized angle steel 6 provided with the warning coating coincide with the edge of the bottom of the inner side of the supporting beam 2.
The length of the national standard galvanized angle steel 6 is set to be 120cm, the width is set to be 5cm, and the height is set to be 5 cm; the distance between the national standard galvanized angle steels 6 is set to be 7.5 cm; the hollow stage 5 has a length of 120cm and a width of 30 cm.
Referring to fig. 6 to 7, the support beam 2 made of two sections of national standard channel steel by welding has a height of 20 cm; national standard channel-section steel height sets up to 10cm, and the width sets up to 4.8cm, and thickness sets up to 5.3mm, and a supporting beam 2's recess outwards sets up. The height of the upright post 3 made of national standard channel steel is 30cm, and the horizontal distance between every two upright posts 3 is set to be 150 cm.
The bottom of the upright post 3 is connected with an anchor bolt anchored on the primary pulp stone stair 7, and the groove of the upright post 3 is arranged inwards.
Referring to fig. 8, a handrail 4 made of a national standard hot dip galvanized steel pipe is provided with a warning coating, and comprises a handrail 8, a handrail cross brace 9 and a handrail upright post 10; the height of each railing post 10 is set to be 120cm, the horizontal distance between every two railing posts 10 is set to be 150cm, the tops of the two railing posts 10 are fixedly connected by a railing 8, a warning object is arranged in the middle of the railing 8, and the middle parts of the two railing posts 10 are fixedly connected by a railing cross brace 9; the wall thickness of the national standard hot dip galvanized steel pipe is 3.8 mm.
From the above description and practice, the utility model provides an antiseep fretwork stair passageway for going up infiltration ground behind reservoir dam compares with prior art, has following advantage: use all kinds of shaped steel concatenation welding, form fretwork stair face, both can prevent that stair upper portion sleet and debris from piling up, can prevent again that stair lower part ground infiltration from freezing, can effectively avoid surperficial snow and freezing, effectively avoid the rainy season stair face wet and slippery, avoid the magma stone stair to maintain in the future, have stronger aesthetic property and practicality, to a great extent has improved important hydraulic structure health level such as upper reservoir dam, has improved dam fortune dimension personnel safety of passing.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications or equivalent substitutions without inventive contribution to the present embodiment as required after reading the present specification, but should be protected by patent laws only within the scope of the claims of the present invention.
Claims (10)
1. An impermeable hollowed-out stair channel for a post-dam infiltration foundation, comprising: the stair climbing device comprises a stair section (1), a support beam (2), upright posts (3) and railings (4); the method is characterized in that:
the stair section (1) comprises a plurality of hollow-out platform stages (5), two ends of the stair section (1) are respectively provided with a support beam (2) which are parallel to each other, the bottom of the support beam (2) is provided with stand columns (3) which are symmetrical to each other, and one side of the top of the support beam (2) is provided with a railing (4);
every fretwork platform stage (5) includes the national standard galvanized angle steel (6) that four sections length equals, the national standard galvanized angle steel (6) of the inboard top edge of a supporting beam (2) are equipped with the warning coating, still are equipped with the same national standard galvanized angle steel (6) in two sections intervals in addition on the national standard galvanized angle steel (6) the horizontal direction that is equipped with the warning coating, still be equipped with the same national standard galvanized angle steel (6) in one section interval in addition on the national standard galvanized angle steel (6) the vertical direction that is equipped with the warning coating.
2. The impermeable hollowed-out stair channel of claim 1, wherein:
the edge of the top of the inner side of the supporting beam (2) is superposed with the right-angled peak of the national standard galvanized angle steel (6) provided with the warning coating; and two top points of the bottom angle of the second section of national standard galvanized angle steel (6) in the horizontal direction of the national standard galvanized angle steel (6) with the warning coating coincide with the edge of the bottom of the inner side of the supporting beam (2).
3. The impermeable hollowed-out stair channel of claim 1 or 2, wherein:
the length of the national standard galvanized angle steel (6) is set to be 120cm, the width is set to be 5cm, and the height is set to be 5 cm; the distance between the national standard galvanized angle steels (6) is set to be 7.5 cm; the length of the hollow-out table stage (5) is 120cm, and the width of the hollow-out table stage is 30 cm.
4. The impermeable hollowed-out stair channel of claim 1, wherein:
the stair sections (1) are higher than the primary pulp stone stair (7) by 30 cm.
5. The impermeable hollowed-out stair channel of claim 1 or 2, wherein:
the supporting beam (2) is welded by two sections of national standard channel steel and has the height of 20 cm; national standard channel-section steel height sets up to 10cm, and the width sets up to 4.8cm, and thickness sets up to 5.3mm, the recess of a supporting beam (2) outwards sets up.
6. The impermeable hollowed-out stair channel of claim 5, wherein:
the height of the upright columns (3) made of national standard channel steel is 30cm, and the horizontal distance between every two upright columns (3) is set to be 150 cm.
7. The impermeable hollowed-out stair channel of claim 6, wherein:
the bottom of the stand column (3) is connected with an anchor bolt anchored on the primary pulp stone stair (7), and the groove of the stand column (3) is arranged inwards.
8. The impermeable hollowed-out stair channel of claim 1, wherein:
the guardrail (4) made of national standard hot-dip galvanized steel pipes is provided with a warning coating and comprises a guardrail handrail (8), a guardrail cross brace (9) and a guardrail upright post (10); the height of each railing post (10) is 120cm, the horizontal distance between every two railing posts (10) is 150cm, the tops of the two railing posts (10) are fixedly connected through a railing (8), a warning object is arranged in the middle of the railing (8), and the middles of the two railing posts (10) are fixedly connected through a railing cross brace (9); the wall thickness of the national standard hot-dip galvanized steel pipe is 3.8 mm.
9. The impermeable hollowed-out stair channel of claim 1, wherein:
the surface of the stair sections (1), the support beams (2), the upright posts (3) and the railings (4) is coated with an anticorrosive agent.
10. The impermeable hollowed-out stair channel of claim 1, wherein:
the stair sections (1), the supporting beams (2), the upright posts (3) and the railings (4) are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022964177.7U CN214658356U (en) | 2020-12-12 | 2020-12-12 | A prevention of seepage fretwork stair passageway for going up infiltration ground behind reservoir dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022964177.7U CN214658356U (en) | 2020-12-12 | 2020-12-12 | A prevention of seepage fretwork stair passageway for going up infiltration ground behind reservoir dam |
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| Publication Number | Publication Date |
|---|---|
| CN214658356U true CN214658356U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022964177.7U Active CN214658356U (en) | 2020-12-12 | 2020-12-12 | A prevention of seepage fretwork stair passageway for going up infiltration ground behind reservoir dam |
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| Country | Link |
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| CN (1) | CN214658356U (en) |
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