CN204690705U - A kind of operator guards of high speed flow-passing surface - Google Patents
A kind of operator guards of high speed flow-passing surface Download PDFInfo
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- CN204690705U CN204690705U CN201520352593.8U CN201520352593U CN204690705U CN 204690705 U CN204690705 U CN 204690705U CN 201520352593 U CN201520352593 U CN 201520352593U CN 204690705 U CN204690705 U CN 204690705U
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Abstract
The utility model discloses a kind of operator guards of high speed flow-passing surface, structure of the present utility model comprises the granite of protection surface layer, the second stage concrete of intermediate layer, and basic unit's fist stage concrete; The end face of described fist stage concrete arranges first phase structural concrete reinforcing bar, and the end face of described second stage concrete arranges second stage concrete surfacing steel bar; Fist stage concrete is connected by U-shaped muscle with second stage concrete, and second stage concrete is connected by elbow dowel or straight dowel with granite; Multiple granite forms array arrangement successively, and multiple granite blind concrete is fixedly connected with.The utility model not only design concept is novel, safe and reliable, easy to operate, and greatly increases flood spillway impact-resisting wear-resisting characteristic.The utility model is applicable to high type dam flood spillway engineering under severe riverbed geological conditions.
Description
Technical field
The utility model relates to the design and construction technical field of dam flood-discharge road high speed flow-passing surface protection, is specially a kind of operator guards of high speed flow-passing surface.
Background technology
Along with the exploitation of Pakistani hydropower technology, in dam is built, there is increasing middle high type dam.Dam is when high water level proposes lock flood discharge, and high-velocity flow, to the erosive wear on flood spillway surface, is the critical consideration of flood-relief channel impact-resisting wear-resisting always.At present, flood spillway generally adopts strong concrete or steel plate structure mask, but in some river, two sides, riverbed, upstream, power station rock crushing, in rainy season, during flood outburst, the rubble carrying a large amount of avalanche enters reservoir area, reservoir water level is made to be in extraordinary high water level, flood-relief channel is once carry lock, high-velocity flow is mingled with block stone and pours in flood-relief channel and absorption basin, thus cause flood-relief channel surface concrete very easily to be damaged by block stone, under the washing away for a long time of current, and then form large area permanent damage, have a strong impact on application life and the engineering safety of engineering permanent building.
In the design of spillway of power station, high speed flow-passing surface generally adopts strong concrete as impact-resisting wear-resisting material, but the riverbed that block stone content is more for some sediment charges are less, the thin layer silt of alluvial in the flood spillway absorption basin of gate downstream and block stone are when lock carried by dam, easily washed away by high-velocity flow, block stone causes direct damage along with high-velocity flow and then to flood spillway base plate.Power station is built in the river that rock fracture is grown very much, block stone clashes into power station flood spillway and causes the phenomenon of high speed flow surface damage more obvious, and strong concrete is difficult to the characteristic requirements reaching impact-resisting wear-resisting and ensure flood spillway safety under water environment severe like this.
Utility model content
For Problems existing in existing flood-relief channel high speed flow-passing surface designing technique, the utility model provides a kind of reasonable in design, safe and reliable, excellent effect, can protect flood-relief channel high speed flow-passing surface structure for a long time.
The utility model is achieved through the following technical solutions:
An operator guards for high speed flow-passing surface, comprises the basic unit's fist stage concrete pouring into a mould connection successively, the second stage concrete of intermediate layer, and the granite of protection surface layer; The end face of described fist stage concrete arranges first phase structural concrete reinforcing bar, and the end face of described second stage concrete arranges second stage concrete surfacing steel bar; Fist stage concrete and second stage concrete inside are socketed by U-shaped muscle, and second stage concrete and granite inside are socketed by elbow dowel or straight dowel.
The granite of protection surface layer becomes array arrangement, blind concrete between adjacent granite, and the granite fissure of displacement of adjacent two row is put.
Preferably, the position in storehouse that described protection surface layer is constructed by point storehouse forms, and arranges constuction joint, the constuction joint squarely dentation cross structure between adjacent position in storehouse between adjacent position in storehouse.
Preferably, described second stage concrete inside also comprises bracing frame, support frame as described above comprises the horizontal steelframe of bracing frame screw-thread steel, bracing frame angle steel and bracing frame band steel composition, and the steelframe supporting leg of supporting leg screw-thread steel and supporting leg screw-thread steel composition, horizontal steelframe and steelframe supporting leg are welded and fixed.
Preferably, support frame as described above forms the supporting surface of convex arc section, concave arc-shaped section and/or horizontal segment.
Preferably, be provided with bolthole bottom described granite, straight peen end or straight dowel one end of elbow dowel are arranged in described bolthole, and fix by injecting the cement grout being added with expansion agent.
Preferably, the intensity C30 of described fist stage concrete; Described second stage concrete and gap concrete are high strength E50 geminal fibers concrete, and described geminal fibers is steel fibre and polypropylene fibre.
A construction method for high speed flow-passing surface operator guards, comprises the following steps:
1) in working face, build basic unit's fist stage concrete and embedded U-shaped muscle, and first phase structural concrete reinforcing bar is installed; Then colligation second stage concrete gluten, at the elevation face welding bracing frame that granite block is installed;
2) on second stage concrete gluten, arrange the granite block that bottom is fixed with elbow dowel successively, the fissure of displacement is put and is reserved concrete warehousing mouth; The cabinet space containing steel mesh reinforcement is formed between fist stage concrete and granite block;
3) adopt perfusion casting method to cabinet space fluid concrete from concrete warehousing mouth, complete intermediate layer second stage concrete;
4), after second stage concrete has been built, the granite that machined through hole is in advance installed at reserved concrete warehousing mouth, then inserts straight dowel along through hole and be in the milk, capping concrete warehousing mouth;
5) when the concrete of perfusion reaches solidifying after date, adopt the gap concrete of abrasive machine to flow-passing surface granite block seam crossing to carry out polishing process, make it to form smooth flow-passing surface.
The granite block preparation method that described bottom is fixed with elbow dowel is that granite block is processed to standard-sized square, and by boring bolthole, slip casting, elbow dowel and granite block are made into as a whole.
Support frame as described above forms the supporting surface of convex arc section, concave arc-shaped section and/or horizontal segment, supports granite block; Bracing frame comprises the horizontal steelframe of bracing frame screw-thread steel, bracing frame angle steel and bracing frame band steel composition, and the steelframe supporting leg of supporting leg screw-thread steel and supporting leg screw-thread steel composition, horizontal steelframe and steelframe supporting leg are welded and fixed.
Second stage concrete adopts high strength E50 geminal fibers concrete, and is arranging temporary construction seam waterstop in face of the second stage concrete surface layer side of water (flow) direction.
Described protection surface layer divides storehouse to construct, and arranges constuction joint between adjacent position in storehouse, the constuction joint squarely dentation cross structure between adjacent position in storehouse.
Compared with prior art, the utility model has following useful technique effect:
The operator guards of a kind of high speed flow-passing surface of the utility model, for high type dam flood spillway engineering middle under severe riverbed geological conditions.By adopting the granite block construction of standard, and processing granite bracing members frame before granite block is installed, conveniently can realize granite face profile and controlling, thus meeting A level flow-passing surface construction requirement.Adopt elbow dowel to increase granite block and the concrete anchored force of flood spillway, and when fist stage concrete is built embedded U-shaped reinforcing bar, the three layer construction making flood spillway relatively independent finally combines together, forms the overall structure of surperficial hard internal stability.Installing U-shaped muscle object is increase and the concrete adhesion of high strength geminal fibers of pouring into afterwards.
The utility model not only design concept is novel, safe and reliable, easy to operate; By being optimized design to the material of flood spillway high speed overcurrent surface layer, greatly strengthen the resistance to impact and abrasion of flood spillway permanent building, improving quality and the appearance effect of dam.
Further, with strong concrete wearing course ratio, avoid the thermal stresses problem of facing concrete, avoid the possibility producing thermal cracking.
Further, granite is processed to the prism that height dimension is greater than other size dimension, can increase the Beneficial Effect of himself stability to overall structure stability.
Further, after the supporting role of bracing frame completes, be just fixed together with second stage concrete, play the effect strengthening intermediate layer intensity.
Further, the constuction joint of square dentation alternative form is set between adjacent position in storehouse, increases the frictional force between adjacent position in storehouse.
Further, protection surface layer divides storehouse to construct, and arranges the constuction joint of square dentation alternative form, increase the frictional force between adjacent position in storehouse between adjacent position in storehouse.
Accompanying drawing illustrates:
Fig. 1 is the operator guards sectional schematic diagram of the utility model high speed flow-passing surface;
Fig. 2 is formed steel construction bracing frame schematic diagram bottom convex arc section granite block;
Fig. 3 is formed steel construction bracing frame schematic diagram bottom concave arc-shaped section and horizontal segment granite block;
Fig. 4 is granite block installation schematic diagram;
Fig. 5 is that the granite block fissure of displacement of single position in storehouse is put and constuction joint schematic diagram;
Fig. 6 is that granite second stage concrete puts in storage and concrete vibrating construction technology figure.
In figure: 1 is granite block; 2 is second stage concrete; 3 is fist stage concrete; 4 is bolthole; 5 is elbow dowel; 6 is gap concrete; 7 is second stage concrete surfacing steel bar; 8 is U-shaped reinforcing bar; 9 is first phase structural concrete reinforcing bar; 10 is large vibrator; 11 is little vibrator; 12 is concrete bucket; 13 is concrete warehousing mouth; 14 is constuction joint; 15 is temporary construction seam waterstop; 16 is small crane; 17 is granite special fixture; 18 is bracing frame screw-thread steel; 19 is bracing frame angle steel; 20 is bracing frame band steel; 21 is supporting leg screw-thread steel.
Specific embodiment
The utility model be flood spillway or similar high speed flow-passing surface one design and constructure scheme, below the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.
As shown in Figure 1; for the operator guards of a kind of high speed flow-passing surface of the utility model; flood spillway base arrangement (high speed flow-passing surface operator guards) as permanent structure is made up of three layer construction; comprise the natural granite 1 of protection surface layer; the second stage of high strength E50 geminal fibers concrete 2 of intermediate layer, and basic unit first phase C30 normal concrete 3.Gap is provided with, gap-fill gap concrete (high strength geminal fibers concrete) 6 between adjacent granite 1.Fist stage concrete 3, when second stage concrete 2 and granite 1 three form flood spillway base plate, by multi-form reinforcing bar 5/8 between every Rotating fields, by different anatomical connectivity together, wherein connect for U-shaped muscle 8 between fist stage concrete 3 and second stage concrete 2, U-shaped muscle 8 is inverted and is arranged, and U-shaped mouth one end is embedded in fist stage concrete 3, and U-shaped end is embedded in second stage concrete 2; Be connected for L-type dowel (elbow dowel) 5 between second stage concrete 2 with granite 1, formed the works of the hard internal stability of appearance by above-mentioned technique.The straight peen end of L-type dowel (elbow dowel) 5 is fixed in granite 1, and elbow end is embedded in second stage concrete 2.The end face of fist stage concrete 3 arranges first phase structural concrete reinforcing bar 9, and the end face of second stage concrete 2 arranges second stage concrete surfacing steel bar 7.
A construction method for high speed flow-passing surface operator guards, comprises the following steps:
1) in working face, build basic unit's fist stage concrete 3 and embedded U-shaped muscle 8, and first phase structural concrete reinforcing bar 9 is installed; Then colligation second stage concrete gluten 7, at the elevation face welding bracing frame that granite block 1 is installed;
2) on second stage concrete gluten 7, arrange the granite block 1 that bottom is fixed with elbow dowel 5 successively, the fissure of displacement is put and is reserved concrete warehousing mouth 13; The cabinet space containing steel mesh reinforcement is formed between fist stage concrete 3 and granite block 1;
3) adopt perfusion casting method to cabinet space fluid concrete from concrete warehousing mouth 13, complete intermediate layer second stage concrete 2;
4) after second stage concrete 2 has been built, the granite 1 that machined through hole is in advance installed at reserved concrete warehousing mouth 13, then inserts straight dowel along through hole and be in the milk, capping concrete warehousing mouth 13;
5) when the concrete 2 of perfusion reaches solidifying after date, adopt the gap concrete 6 of abrasive machine to flow-passing surface granite block seam crossing to carry out polishing process, make it to form smooth flow-passing surface.
Protection surface layer comprises convex arc section, concave arc-shaped section and horizontal segment.Fig. 2 and Fig. 3 to be respectively bottom convex arc section granite block formed steel construction support schematic diagram and concave arc-shaped section and horizontal segment granite block bottom formed steel construction support schematic diagram; Before implementing construction, convex arc section and concave arc-shaped section surface layer granite block 1 all need to arrange temporary construction support 18/19/20/21, temporary construction support adopts welding for steel structure to form, and comprises the horizontal steelframe of Φ 22mm screw-thread steel 18, angle steel 19 and band steel 20 composition and the steelframe supporting leg of Φ 25mm screw-thread steel 21 and Φ 22mm screw-thread steel 18 composition.
Fist stage concrete (structural concrete) 3 and the second stage of strong concrete 2 need layering substage construction.Fist stage concrete 3 major design realizes the structural thickness requirement of flood spillway base plate, and second stage concrete 2 and granite 1 are the requirement of strength of the impact-resisting wear-resisting meeting design.Second stage concrete 2 construction lags behind substructure concrete 3 and top layer granite 1 is constructed.
As shown in Figure 4, granite 1 will be processed to standard-sized square, and monolithic gravity energy meets manual operation requirement.Granite block 1 is as flow-passing surface safeguard measure, and its anchor type, except the concrete adhesive power of routine and deadweight, also comprises the elbow dowel 5 that bottom increases.Elbow dowel 5, at Construction in Preparatory Stage, by boring, slip casting, is made into as a whole with granite block 1, and after second stage concrete has been built, granite block 1 and concrete 2 link together, thus strengthen the adhesion of two kinds of structures.When granite block 1 is installed, need the fissure of displacement to put, to be sling granite 1 by the granite special fixture 17 in small crane 16, arrange successively.
As shown in Figure 5, when granite block 1 is laid, that reserves concrete 2 enters Hatch Opening 13, for the granite block 1 entering Hatch Opening 13 place, installs, and adopt contact grouting process after having built.Second stage concrete adopts high strength geminal fibers (steel fibre and polypropylene fibre) concrete 2, and arranges surfacing steel bar 7 and temporary construction seam waterstop 15; Waterstop 15 is vertical with water (flow) direction arranges for temporary construction seam.
As shown in Figure 6, second stage concrete 2 need adopt perfusion to build mode, and concrete is poured into from concrete warehousing mouth by concrete bucket 12, and size vibrator 10/11 cooperation is vibrated.When the concrete 2 of perfusion reaches solidifying after date, adopt the concrete 6 of Handheld grinding machine to flow-passing surface granite block seam crossing to carry out polishing process, make it to form smooth flow-passing surface.
Design principle of the present utility model:
Granite block 1 is installed and based on certain thickness concrete plate, generally need be directly installed on basement rock.Concrete need be divided into two parts, Part I concrete 3 is the primary structure of base plate, object is the thickness requirement in order to meet back-plane design, when first phase structural concrete reinforcing bar 9 is installed, except ensureing the shockproof requirements in self structure, also need to install U-shaped muscle 8, object increases the adhesion with the high strength geminal fibers concrete 2 poured into afterwards.
Granite block need complete second stage concrete gluten 7 colligation work bottom it before installing.Then at the elevation face weldable steel bracing frame that granite block 1 is installed, bracing frame mainly adopts indented bars 18, and bracing frame end face is angle steel 19 and band steel 20.When granite block is installed, the interior right angle of angle steel 19 is for limiting and fixing the position on one of them direction.When angle steel 19 welds, accurately need put in place, then according to the design attitude of granite block, angle steel 19 mark the putting position of granite.Band steel 20 is mainly used in leveling granite, and the transverse property of band steel is poor, also can replace with round steel.
Second stage concrete 2 position in storehouse rush storehouse and seam face process need to carry out in time after fist stage concrete 3 completes, and when granite 1 starts to install, the second phase need be carried out rinse, mainly remove construction foreign material, because second stage concrete is perfusion operation, after granite 1 is installed, form the cabinet space containing steel mesh reinforcement bottom granite 1, personnel cannot enter cleaning in casing.
Granite block 1 preparation mainly comprises beats bolthole 4, installs elbow dowel 5 and grouting etc.Elbow dowel 5 is installed and is adopted the mode of first inserted link post-grouting and granite to be made into entirety, and grouting agent is mainly added with the cement grout of certain density expansion agent.
When granite block 1 is installed, need the fissure of displacement to put, for ease of concrete discharging, concrete warehousing mouth 13 be reserved.Second stage concrete 2 is entered to the granite at Hatch Opening place, in processing factory, be machined through hole in advance, after second stage concrete 2 has been built, granite has been installed and inserts straight dowel along through hole and be finally in the milk.
Granite block mask divides storehouse to construct, constuction joint 14 between adjacent position in storehouse, due to granite block, no longer arranges seam surface concrete keyway, but will make square dentation alternative form, increase the frictional force between adjacent position in storehouse.
By adopting the granite block construction of standard, and processing granite bracing members frame before granite block is installed, conveniently can realize granite face profile and controlling, thus meeting A level flow-passing surface construction requirement.Construction is simple, and the cycle is short, and cost is low.Consider from the engineering life complete period, invest relatively low.Granite block is processed outside field, and quality guarantee rate is high, saves the duration.
In reality, the natural granite 1 of protection surface layer, the second phase of intermediate layer, and the thickness of basic unit's first phase is designed to 600mm respectively, 800mm, 2600 ~ 6200mm.
Claims (8)
1. an operator guards for high speed flow-passing surface, is characterized in that, comprises the basic unit's fist stage concrete (3) pouring into a mould connection successively, the second stage concrete (2) of intermediate layer, and the granite (1) of protection surface layer; The end face of described fist stage concrete (3) arranges first phase structural concrete reinforcing bar (9), and the end face of described second stage concrete (2) arranges second stage concrete surfacing steel bar (7); Fist stage concrete (3) and second stage concrete (2) inside are socketed by U-shaped muscle (8), and second stage concrete (2) is socketed by elbow dowel (5) or straight dowel with granite (1) is inner.
2. the operator guards of a kind of high speed flow-passing surface according to claim 1; it is characterized in that; the granite (1) of described protection surface layer becomes array arrangement; blind concrete (6) between adjacent granite (1), granite (1) fissure of displacement of adjacent two row is put.
3. the operator guards of a kind of high speed flow-passing surface according to claim 1; it is characterized in that; the position in storehouse that described protection surface layer is constructed by point storehouse forms, and arranges constuction joint (14), constuction joint (14) the squarely dentation cross structure between adjacent position in storehouse between adjacent position in storehouse.
4. the operator guards of a kind of high speed flow-passing surface according to claim 1; it is characterized in that; described second stage concrete (2) inside also comprises bracing frame; support frame as described above comprises the horizontal steelframe that bracing frame screw-thread steel (18), bracing frame angle steel (19) and bracing frame band steel (20) form; the steelframe supporting leg of supporting leg screw-thread steel (21) and supporting leg screw-thread steel composition, horizontal steelframe and steelframe supporting leg are welded and fixed.
5. the operator guards of a kind of high speed flow-passing surface according to claim 4, is characterized in that, support frame as described above forms the supporting surface of convex arc section, concave arc-shaped section and/or horizontal segment.
6. the operator guards of a kind of high speed flow-passing surface according to claim 1; it is characterized in that; described granite (1) bottom is provided with bolthole (4); straight peen end or straight dowel one end of elbow dowel (5) are arranged in described bolthole (4), and fix by injecting the cement grout being added with expansion agent.
7. the operator guards of a kind of high speed flow-passing surface according to claim 1, is characterized in that, the intensity C30 of described fist stage concrete (3).
8. the operator guards of a kind of high speed flow-passing surface according to claim 1; it is characterized in that; described second stage concrete (2) and gap concrete (6) are high strength E50 geminal fibers concrete, and described geminal fibers is steel fibre and polypropylene fibre.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352593.8U CN204690705U (en) | 2015-05-27 | 2015-05-27 | A kind of operator guards of high speed flow-passing surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520352593.8U CN204690705U (en) | 2015-05-27 | 2015-05-27 | A kind of operator guards of high speed flow-passing surface |
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| CN204690705U true CN204690705U (en) | 2015-10-07 |
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| CN201520352593.8U Expired - Fee Related CN204690705U (en) | 2015-05-27 | 2015-05-27 | A kind of operator guards of high speed flow-passing surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929084A (en) * | 2015-05-27 | 2015-09-23 | 中国葛洲坝集团第三工程有限公司 | Protection structure of high-speed overflowing surface and construction method thereof |
| CN110984153A (en) * | 2019-11-02 | 2020-04-10 | 北京京水建设集团有限公司 | Construction method for pouring concrete behind hole-penetrating steel pipe |
-
2015
- 2015-05-27 CN CN201520352593.8U patent/CN204690705U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929084A (en) * | 2015-05-27 | 2015-09-23 | 中国葛洲坝集团第三工程有限公司 | Protection structure of high-speed overflowing surface and construction method thereof |
| CN110984153A (en) * | 2019-11-02 | 2020-04-10 | 北京京水建设集团有限公司 | Construction method for pouring concrete behind hole-penetrating steel pipe |
| CN110984153B (en) * | 2019-11-02 | 2021-04-06 | 北京京水建设集团有限公司 | Construction method for pouring concrete behind hole-penetrating steel pipe |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 |
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| CF01 | Termination of patent right due to non-payment of annual fee |