CN212175711U - 90 degrees return bend shaft construction platforms of major diameter - Google Patents
90 degrees return bend shaft construction platforms of major diameter Download PDFInfo
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- CN212175711U CN212175711U CN202020720748.XU CN202020720748U CN212175711U CN 212175711 U CN212175711 U CN 212175711U CN 202020720748 U CN202020720748 U CN 202020720748U CN 212175711 U CN212175711 U CN 212175711U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a 90 degrees return bend shaft construction platforms of major diameter. The device comprises a transverse conveying system, a vertical lifting system and a platform system; the platform system comprises an upper truss and a lower truss platform, and the upper truss and the lower truss platform are respectively and independently supported and fixed above the vertical shaft section and on two sides of the concrete structure of the contour line expanding excavation part of the bent pipe section; the transverse conveying system comprises a personnel passage and a material passage which are arranged in parallel in a bottom arch concrete structure in the middle of the horizontal tunnel section and are connected with the upper truss and the lower truss platform. The steel truss of the utility model is fixed on the foundation concrete, the foundation deformation risk is small, the stability is high, and the truss is easy to check and maintain; the upper truss platform and the lower truss platform are mutually independent, are free of connecting upright columns, are not influenced by mutual stress, and are small in construction interference and low in potential safety hazard; the method can be applied to the whole process of shaft construction such as excavation and support, concrete lining, grouting and the like without relocation or transformation; the lining clearance is not occupied, the later period is not required to be dismantled, and the auxiliary vertical formwork reinforcement can be matched with the concrete pouring period.
Description
Technical Field
The utility model belongs to the technical field of the construction of building engineering shaft, especially, relate to hydraulic and hydroelectric engineering shaft construction technical field, in particular to 90 degrees return bend shaft construction platform structures of major diameter.
Background
The vertical shaft construction platform is construction equipment frequently applied to large-scale vertical shaft construction, and is greatly different from a conventional vertical shaft construction platform in the respect of the vertical shaft construction platform with 90-degree bent pipes. The construction platform comprises a lifting system, a steel truss is generally fixed by adopting a top anchor in a conventional shaft lifting system, a top wheel is arranged on the steel truss, an upper platform and a lower platform are connected into a whole by utilizing steel stand columns, personnel and materials are lifted up and down through lifting equipment, appropriate transformation is carried out according to the change of working contents, such as excavation, lining, grouting and the like, and the lifting equipment is detached after use is finished. The arrangement mode faces a plurality of problems, firstly, the reliability of the top anchor fixing truss is poor, and the inspection and maintenance difficulty is high; secondly, under the condition that the upper-layer platform is stressed during operation, the lower-layer platform is also used, so that potential safety hazards caused by cross use are large; thirdly, multiple reconstruction in the construction process has high safety risk, high construction difficulty and waste of construction period; fourthly, need demolish after using the completion, demolish the degree of difficulty very big, and the safety risk is high.
Disclosure of Invention
The utility model discloses a 90 degrees return bend shaft construction platforms of major diameter according to prior art not enough. The utility model provides a be arranged in whole shaft work progress support platform system has solved in the past that the shaft work progress in the relatively poor, safe risk is high, a series of problems such as reform transform and need demolish many times of lifting system reliability, expanded the comprehensive functions of platform, improved and promoted loading capacity, strengthened platform system's commonality, reliability.
The utility model discloses a following technical scheme realizes:
90 degrees return bend shaft construction platform of major diameter, return bend shaft include 90 degrees plain tunnel sections, bend section and the vertical shaft section of hookup, its characterized in that: the construction platform comprises a transverse conveying system, a vertical lifting system and a platform system;
the platform system comprises an upper truss platform and a lower truss platform, wherein the upper truss platform and the lower truss platform are respectively and independently supported and fixed on two sides of a concrete structure above the vertical shaft section and on the expanded excavation part of the outer contour line of the bent pipe section;
the transverse conveying system comprises a personnel channel and a material channel, is arranged in the middle bottom arch concrete structure of the horizontal tunnel section in parallel and is connected with an upper truss platform and a lower truss platform of the platform system;
the vertical lift system includes personnel and material lifting facilities, is disposed on the upper and lower truss platforms of the platform system, and is vertically raised and lowered along the shaft section.
The upper truss platform of the platform system consists of a truss foundation and a steel truss which are independently arranged, is arranged above the bent pipe section right above the vertical shaft and the lower truss platform and is fixedly positioned outside the concrete lining structure line; the lower truss platform of the platform system consists of a truss foundation and a steel truss which are independently arranged, is arranged right above the vertical shaft and below the upper truss platform, and horizontally and fixedly spans two sides outside the concrete lining structure line; the height between the two layers of trusses of the upper truss platform and the lower truss platform is set according to the height of equipment, materials, a manned anti-falling cage and a manned suspension cage between the two layers of trusses.
The truss foundations of the upper truss platform and the lower truss platform of the platform system, which are independently arranged, are poured by reinforced concrete to form a supporting platform, and the steel plates pre-embedded on the concrete surface are fixedly connected with the transverse H-shaped steel of the steel truss in a welding mode.
The steel truss of the upper truss platform of the platform system is a frame structure formed by welding profile steels and I-shaped steels, and a head sheave fixing steel frame is additionally arranged according to the arrangement of personnel and material lifting facilities.
The steel truss of the lower truss platform of the platform system is welded by utilizing section steel and I-shaped steel to form a frame structure, hanging holes are formed according to arrangement of personnel and material lifting facilities, a protective railing is arranged on the adjacent edge, and the top surface of the steel truss is sealed by adopting a stamped rhombic steel plate net.
And further, the personnel channel and the material channel of the transverse conveying system are arranged in parallel at the position of the middle bottom arch of the tunnel section and are arranged in parallel in a combined manner.
The personnel passageway adopts I-steel and joint bar anchor in the excavation cavern bottom plate rock mass, adopts shaped steel as the passageway girder to set up the decorative pattern steel sheet structure and mark time, the passageway both sides set up the protection railing.
The material channel is anchored by adopting I-shaped steel and a joint bar, and a profile steel track is arranged at the top of the excavated chamber bottom plate rock mass and is connected with a steel structure unloading platform at the joint part of a lower truss platform of the platform system; the material can be transported by a transport trolley drawn by a winch on the profile steel track in a movable manner.
The personnel lifting facility of the vertical lifting system consists of a mining winch, an anti-falling winch, a winch head sheave, an anti-falling winch head sheave, a steel wire rope and an anti-falling cage, wherein the distance from the anti-falling cage to the wall of the shaft after the concrete lining of the shaft is not less than 20 cm; the mining winch is arranged on one side in the tunnel section, is staggered with the anti-falling winch in the front and back direction, and is in cross connection with the top of the anti-falling cage through a winch head sheave; the anti-falling winch is connected with the anti-falling cage bottom anti-falling device through the anti-falling winch head sheave.
The material lifting facility of the vertical lifting system consists of a carrying winch, a carrying winch head sheave, a steel wire rope and a carrying cage, and the carrying cage is arranged in the center of the vertical shaft; the object carrying winch is arranged on the other side of the mining winch in the flat tunnel section and is connected with the object carrying cage through an upper wheel of the object carrying winch.
The utility model has the advantages of it is following:
1. the utility model has high safety and reliability, the steel truss is fixed on the foundation concrete, the foundation deformation risk is small, the stability is high, and the truss is easy to check and maintain;
2. the upper truss platform and the lower truss platform of the utility model are mutually independent, no connecting upright post is arranged, the lower truss platform is not influenced when the upper truss platform is stressed, the construction interference is small, and the potential safety hazard is low;
3. the utility model can be applied to the whole process of shaft construction such as excavation supporting, concrete lining, grouting and the like without changing or transforming for many times;
4. the utility model discloses be located outside the concrete lining structure line completely, not encroach on the lining cutting headroom, the later stage need not demolish, can also cooperate the supplementary formwork erection reinforcement during curved section concrete placement.
Drawings
Fig. 1 is a cross-sectional view of a shaft hoist system of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the man way of the present invention;
FIG. 3 is a longitudinal cross-sectional view of the material passage of the present invention;
FIG. 4 is a cross-sectional view of the personnel material passageway of the present invention;
fig. 5 is a cross-sectional view of the truss platform of the present invention;
fig. 6 is a top view of the upper truss platform of the present invention;
fig. 7 is a top view of the lower truss platform of the present invention.
In the figure, A is a flat hole section, B is a bent pipe section, C is a vertical shaft section, D is an inner contour line of an inner side bent pipe lining, E is a center line of the bent pipe section, F is an inner contour line of the outer side bent pipe lining, G is a vertical shaft center line, 1 is a personnel material channel, 2 is an upper truss platform foundation, 3 is a lower truss platform foundation, 4 is an upper truss platform, 5 is a lower truss platform, 6 is a carrying winch head sheave, 7 is an anti-falling winch head sheave, 8 is a mining winch, 9 is a carrying winch, 10 is an anti-falling winch, 11 is a material transportation winch, 12 is an anti-falling cage, 13 is a carrying cage, 14 is a head sheave truss, 15 is a winch head sheave, 16 is a material transportation trolley, 17 is a channel foundation dowel, 18 is channel foundation concrete, 19 is channel I-steel, 20 is a section steel track, 21 is a discharge platform, 22 is an I-steel rail, 23 is a step, 24 is an upper platform H-section steel, 25 is an upper platform transverse I-steel, 26 is an upper platform longitudinal I-steel, 27 is a lower platform transverse I-steel, 28 is a lower platform longitudinal I-steel, and 29 is a connecting steel plate.
Detailed Description
The present invention will be further described with reference to the following embodiments, which are intended to illustrate the principles of the present invention without limiting the present invention in any way, and the present invention is not beyond the scope of the present invention.
90 degrees return bend shaft construction platforms of major diameter contain: a lateral conveying system, a vertical lifting system and a platform system. The transverse conveying system comprises a personnel passage and a material passage, the vertical lifting system comprises a personnel lifting facility and a material lifting facility, and the platform system comprises an upper truss platform and a lower truss platform.
(1) The transverse conveying system consists of a personnel channel and a material channel, wherein the personnel channel and the material channel are arranged in parallel at the position of a bottom arch in the middle of the horizontal tunnel section and are arranged in parallel in a combined manner.
The personnel passageway adopts I-steel and joint bar anchor in the excavation cavern bottom plate rock mass, adopts shaped steel as the passageway girder to set up the decorative pattern steel sheet structure and mark time, the passageway both sides set up the protection railing.
The material channel is anchored by adopting I-shaped steel and a joint bar, and a profile steel track is arranged at the top of the excavated chamber bottom plate rock mass and is connected with a steel structure unloading platform at the lower truss platform combination part of the platform system. The material is transported by a material transporting winch to pull a transporting trolley.
(2) The upper truss platform of the platform system consists of a truss foundation and a steel truss, is arranged above the bent pipe section right above the vertical shaft and the lower truss platform and is positioned outside a concrete lining structure line.
The truss foundation is formed by pouring reinforced concrete to form a supporting platform and is welded and connected with the transverse H-shaped steel of the truss by utilizing steel plates pre-embedded on the surface of the concrete.
The steel truss is formed by welding profile steel and I-shaped steel to form a frame structure, and a head sheave fixing steel frame is additionally arranged according to the arrangement of personnel and material lifting facilities.
The lower truss platform of the platform system consists of a truss foundation and a steel truss, is arranged right above the vertical shaft, is arranged below the bent pipe section and the upper truss platform and is positioned outside a concrete lining structure line.
The truss foundation is formed by pouring reinforced concrete to form a supporting platform, and the steel plate embedded in the concrete surface is welded with the transverse I-shaped steel of the truss.
The steel truss is welded by utilizing section steel and I-shaped steel to form a frame structure, hanging holes are formed according to arrangement of personnel and material lifting facilities, a protective railing is arranged on the adjacent side, and the top surface is sealed by adopting a stamped rhombic steel plate net.
The height between the two layers of trusses of the upper truss platform and the lower truss platform is set according to the height of subsequent equipment, materials and the height of the suspension cage.
(3) The personnel lifting device of the vertical lifting system consists of a mining winch, an anti-falling winch, a winch head sheave, an anti-falling winch head sheave, a steel wire rope and an anti-falling cage, wherein the distance from the anti-falling cage to the wall of the shaft after the concrete lining of the shaft is not less than 20 cm.
The mining winch is arranged on one side in the upper horizontal tunnel, is arranged in a front-back staggered manner with the anti-falling winch and is in cross connection with the top of the anti-falling cage through a winch head sheave.
The anti-falling winch is connected with the anti-falling device at the bottom of the anti-falling cage through the anti-falling winch head sheave.
The material lifting device of the vertical lifting system consists of a loading winch, a loading winch head sheave, a steel wire rope and a loading cage, wherein the cage is arranged in the center of the vertical shaft.
And the loading winch is arranged on the other side (different from the mining winch) in the upper horizontal tunnel and is connected with the loading suspension cage through a head sheave.
With reference to figures 1 to 7.
The utility model discloses before the platform system sets up, at first will carry out technical super digging to bend section B, with profile F in the excavation of flat tunnel section A face extends to shaft outside return bend lining cutting, for reducing super digging super fill-out engineering volume, bend section B extension excavation can set up the slope, and the slope should be 8 ~ 12.
The personnel channel is anchored in the excavated chamber bottom plate rock mass by adopting channel I-steel 19, channel foundation joint bars 17 and channel foundation concrete 18, the channel I-steel 19 is used as a channel main beam, a patterned steel plate structure step 23 is arranged, and protective railings are arranged on two sides of the personnel material channel 1. The depth of the channel foundation joint bar 17 entering rock is not less than 1.0m, the exposed length is not less than 30cm, the channel foundation concrete 18 is marked with the number C25-C35, the I-shaped steel of the upright column and the main beam is not less than I18, the I-shaped steel of the secondary beam and the diagonal bracing is not less than I10, and the protective railing is not less than 1.2 m.
The material channel is anchored in the excavated chamber bottom plate rock mass by adopting channel I-steel 19, channel foundation joint bars 17 and channel foundation concrete 18, the top is provided with a section steel track 20, a steel structure unloading platform 21 and an I-steel car bumper 22 at the joint part of the section steel track and the lower platform. The material is transported by the material transport trolley 16 drawn by the material transport winch 11. The rail section steel 20 is not less than I14, the length of the discharging platform 21 is not less than 2.0m, the width is not less than 4.0m, the section steel of the I-steel car bumper 22 is not less than I18, and the height is not less than 80 cm.
The upper truss platform 4 consists of an upper truss platform foundation 2 and a steel truss, is arranged right above the vertical shaft and above the lower truss platform 5, and is positioned outside a concrete lining structure line. The upper truss platform foundation 2 is formed by pouring reinforced concrete to form a supporting platform, and is welded and connected with the truss upper platform H-shaped steel 24 by using a connecting steel plate 29 pre-embedded on the surface of the concrete. The steel truss is welded by upper platform H-shaped steel 24, upper platform transverse I-shaped steel 25 and upper platform longitudinal I-shaped steel 26 to form a frame structure. The head sheave truss 14 is arranged on top. The number of the truss foundation concrete is not lower than C25, the type of the H-shaped steel is not less than HW300, the lower-layer transverse I-shaped steel is not less than I18, and the longitudinal I-shaped steel, the upper-layer transverse I-shaped steel and the oblique I-shaped steel are not less than I10.
The lower truss platform 5 consists of a lower truss platform foundation 3 and a steel truss, is arranged right above the vertical shaft and below the upper truss platform 4, and is positioned outside a concrete lining structure line. The lower truss platform foundation 3 is formed by pouring reinforced concrete to form a supporting platform, and is welded and connected with the lower platform transverse I-shaped steel 27 by utilizing a connecting steel plate 29 pre-embedded on the surface of the concrete. The steel truss is formed by welding a lower platform transverse I-shaped steel 27 and a lower platform longitudinal I-shaped steel 28 to form a frame, and the top surface is closed by a stamped rhombic steel plate net. The number of the truss foundation concrete is not lower than C25, the lower layer I-shaped steel is not less than I18, and the upper layer I-shaped steel is not less than I10.
The width of the upper truss platform and the width of the lower truss platform are consistent with the actual excavation width of the cavern, the required construction width is reserved on two sides, one end in the length direction is intersected with the excavation face, and the other end does not exceed the center line E of the bent pipe.
The personnel lifting device consists of a mining winch 8, an anti-falling winch 10, a winch head sheave 15, an anti-falling winch head sheave 7, a steel wire rope and an anti-falling cage 12, wherein the distance from the anti-falling cage 12 to the wall of the shaft after the shaft concrete lining is not less than 20 cm.
The material lifting device consists of a loading winch 9, a loading winch head sheave 6, a steel wire rope and a loading suspension cage 13, wherein the loading suspension cage 13 is arranged in the center G of the vertical shaft. The object carrying winch 9 is arranged on the other side in the upper horizontal tunnel A, is different from the mining winch 8, and is connected with the object carrying cage 13 through the object carrying winch head sheave 6.
Engineering example:
a certain power station draws water and contains bend section shaft 382m, and wherein the upper bend section is 90 elbow section, diameter 30m, excavation internal diameter 8.9m, and lining thickness 50cm, compares traditional lift system, does not carry out system transformation and practices thrift the time limit for a project about 2.5 months, practices thrift installation and demolishs the expense about 20 ten thousand yuan. Meanwhile, the system is stable, safe and reliable in operation, has no quality and safety accidents and is commented on consistently.
Claims (10)
1. The utility model provides a 90 degrees return bend shaft construction platform of major diameter, return bend shaft include 90 degrees connected's adit section, bend section and shaft section, its characterized in that: the construction platform comprises a transverse conveying system, a vertical lifting system and a platform system;
the platform system comprises an upper truss platform and a lower truss platform, wherein the upper truss platform and the lower truss platform are respectively and independently supported and fixed on two sides of a concrete structure above the vertical shaft section and on the expanded excavation part of the outer contour line of the bent pipe section;
the transverse conveying system comprises a personnel channel and a material channel, is arranged in the middle bottom arch concrete structure of the horizontal tunnel section in parallel and is connected with an upper truss platform and a lower truss platform of the platform system;
the vertical lift system includes personnel and material lifting facilities, is disposed on the upper and lower truss platforms of the platform system, and is vertically raised and lowered along the shaft section.
2. The large-diameter 90-degree elbow shaft construction platform according to claim 1, wherein: the upper truss platform of the platform system consists of a truss foundation and a steel truss which are independently arranged, is arranged above the bent pipe section right above the vertical shaft and the lower truss platform and is fixedly positioned outside the concrete lining structure line; the lower truss platform of the platform system consists of a truss foundation and a steel truss which are independently arranged, is arranged right above the vertical shaft and below the upper truss platform, and horizontally and fixedly spans two sides outside the concrete lining structure line; the height between the two layers of trusses of the upper truss platform and the lower truss platform is set according to the height of equipment, materials, a manned anti-falling cage and a manned suspension cage between the two layers of trusses.
3. The large-diameter 90-degree elbow shaft construction platform according to claim 2, wherein: the truss foundations of the upper truss platform and the lower truss platform of the platform system, which are independently arranged, are poured by reinforced concrete to form a supporting platform, and the steel plates pre-embedded on the concrete surface are fixedly connected with the transverse H-shaped steel of the steel truss in a welding mode.
4. The large-diameter 90-degree elbow shaft construction platform according to claim 2, wherein: the steel truss of the upper truss platform of the platform system is a frame structure formed by welding profile steels and I-shaped steels, and a head sheave fixing steel frame is additionally arranged according to the arrangement of personnel and material lifting facilities.
5. The large-diameter 90-degree elbow shaft construction platform according to claim 2, wherein: the steel truss of the lower truss platform of the platform system is welded by utilizing section steel and I-shaped steel to form a frame structure, hanging holes are formed according to arrangement of personnel and material lifting facilities, a protective railing is arranged on the adjacent edge, and the top surface of the steel truss is sealed by adopting a stamped rhombic steel plate net.
6. The large-diameter 90-degree elbow shaft construction platform according to any one of claims 1 to 5, wherein: and the personnel passage and the material passage of the transverse conveying system are arranged in parallel at the middle bottom arch position of the horizontal tunnel section and are arranged in parallel in a combined manner.
7. The large-diameter 90-degree elbow shaft construction platform according to claim 6, wherein: the personnel passageway adopts I-steel and joint bar anchor in the excavation cavern bottom plate rock mass, adopts shaped steel as the passageway girder to set up the decorative pattern steel sheet structure and mark time, the passageway both sides set up the protection railing.
8. The large-diameter 90-degree elbow shaft construction platform according to claim 6, wherein: the material channel is anchored by adopting I-shaped steel and a joint bar, and a profile steel track is arranged at the top of the excavated chamber bottom plate rock mass and is connected with a steel structure unloading platform at the joint part of a lower truss platform of the platform system; the material can be transported by a transport trolley drawn by a winch on the profile steel track in a movable manner.
9. The large-diameter 90-degree elbow shaft construction platform according to claim 6, wherein: the personnel lifting facility of the vertical lifting system consists of a mining winch, an anti-falling winch, a winch head sheave, an anti-falling winch head sheave, a steel wire rope and an anti-falling cage, wherein the distance from the anti-falling cage to the wall of the shaft after the concrete lining of the shaft is not less than 20 cm; the mining winch is arranged on one side in the tunnel section, is staggered with the anti-falling winch in the front and back direction, and is in cross connection with the top of the anti-falling cage through a winch head sheave; the anti-falling winch is connected with the anti-falling cage bottom anti-falling device through the anti-falling winch head sheave.
10. The large-diameter 90-degree elbow shaft construction platform according to claim 9, wherein: the material lifting facility of the vertical lifting system consists of a carrying winch, a carrying winch head sheave, a steel wire rope and a carrying cage, and the carrying cage is arranged in the center of the vertical shaft; the object carrying winch is arranged on the other side of the mining winch in the flat tunnel section and is connected with the object carrying cage through an upper wheel of the object carrying winch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020720748.XU CN212175711U (en) | 2020-04-30 | 2020-04-30 | 90 degrees return bend shaft construction platforms of major diameter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020720748.XU CN212175711U (en) | 2020-04-30 | 2020-04-30 | 90 degrees return bend shaft construction platforms of major diameter |
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| CN212175711U true CN212175711U (en) | 2020-12-18 |
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| CN202020720748.XU Active CN212175711U (en) | 2020-04-30 | 2020-04-30 | 90 degrees return bend shaft construction platforms of major diameter |
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