CN212336072U - 90 degrees return bend shaft construction platform foundation structures of major diameter - Google Patents
90 degrees return bend shaft construction platform foundation structures of major diameter Download PDFInfo
- Publication number
- CN212336072U CN212336072U CN202020718651.5U CN202020718651U CN212336072U CN 212336072 U CN212336072 U CN 212336072U CN 202020718651 U CN202020718651 U CN 202020718651U CN 212336072 U CN212336072 U CN 212336072U
- Authority
- CN
- China
- Prior art keywords
- platform
- foundation
- truss
- concrete
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Foundations (AREA)
Abstract
The utility model discloses a 90 degrees return bend shaft construction platform foundation structures of major diameter. The construction platform comprises a horizontal tunnel section, a bent pipe section and a vertical shaft section which are connected in a 90-degree mode, the construction platform comprises an upper truss platform and a lower truss platform, and truss foundation supports which are respectively and independently arranged on the upper truss platform and the lower truss platform are fixed on two sides of a concrete structure of a portion, above the vertical shaft section, of the bent pipe section, of the curved pipe section, of the extended excavation portion. The utility model improves the strength, rigidity and stability of the platform foundation structure, and effectively avoids the problems of uncontrollable welding quality, difficult inspection, complex stress and the like of the conventional platform truss; the transverse main beam can be directly welded on the working surface at the upper part of the vertical shaft, the welding quality is controllable, the inspection and the maintenance are convenient, and if a problem exists, the problem can be found in time; avoided the platform truss to set up the stand, separated two-layer platform truss completely, construction interference is little, and need not demolish after the construction is accomplished, directly can pour the curved section of later stage and surpass fill in the concrete in the surperficial chisel hair, has reduced construction cost and safe risk.
Description
Technical Field
The utility model belongs to the technical field of hydraulic and hydroelectric, railway, highway, coal mine engineering shaft construction platform truss foundation structural design construction, be particularly useful for containing the shaft construction lift system platform truss foundation structure of 90 sections of bending.
Background
The conventional vertical shaft hoisting system generally adopts a steel truss fixed by a top anchor at the top, and an upper truss platform and a lower truss platform are welded and reinforced by side wall anchor rods and platform I-shaped steel. In addition, because the two layers of trusses are connected by steel structure upright posts, the lower truss platform can be stressed simultaneously under the stress working condition of the upper truss platform, the requirements on the strength and the rigidity of the structure are very high, the stress condition is complex, and the construction interference is large. Shaft construction is used as a major hazard source, and especially the design of a lifting platform system is particularly important, and the traditional truss foundation needs to be improved.
Disclosure of Invention
The utility model discloses a 90 degrees return bend shaft construction platform foundation structures of major diameter according to prior art's not enough. The to-be-solved problem of the utility model is to provide an intensity, rigidity and stability are better, simple structure, and the quality is controllable, does not invade in the construction and accounts for the truss foundation structure that lining cutting structure headroom and later stage exempted from to demolish.
The utility model discloses a following technical scheme realizes:
90 degrees return bend shaft construction platform foundation structures of major diameter, return bend shaft include 90 degrees connected adit section, bend section and shaft section, its characterized in that: the construction platform comprises an upper truss platform and a lower truss platform, and truss foundation supports which are respectively and independently arranged on the upper truss platform and the lower truss platform are fixed on two sides of a concrete structure above the vertical shaft section and on the digging part of the contour line of the bent pipe section.
The upper truss platform consists of a truss foundation and a steel truss which are independently arranged, and is arranged outside a bent pipe section concrete lining structural line right above the vertical shaft and horizontally fixed above the lower truss platform; the lower truss platform consists of truss foundations and steel trusses which are independently arranged, and the lower truss platform is arranged on two sides of a concrete lining structure line of a bent pipe section right above the vertical shaft and is horizontally fixed below the upper truss platform; 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 and the height of the suspension cage between the two layers of trusses.
The truss foundation of the upper truss platform consists of an upper platform concrete foundation, buttress column concrete, a connecting foundation steel plate and a reinforcing anchor rod; excavating side walls along two sides of the bent pipe section on the upper platform concrete foundation, and pouring concrete to form a rock anchor beam structure; a plurality of groups of connecting foundation steel plates are symmetrically arranged on the top surface of the upper platform concrete foundation in parallel along the axis of the hole, and the connecting foundation steel plates are welded and connected with the structural steel bars fixedly connected in the upper platform concrete foundation; three rows of reinforcing anchor rods are arranged on the upper platform concrete foundation from top to bottom, wherein two rows are upper platform reinforcing tensile anchor rods, and one row is upper platform reinforcing compression anchor rods; the inner end of each reinforced anchor rod is welded and connected with the structural steel bars fixedly connected with the concrete foundation of the upper platform in an inner mode, and the outer end of each reinforced anchor rod is fixedly connected with the outer portion of the vertical shaft in an anchoring mode.
The width of the top surface of the rock anchor beam of the concrete foundation of the upper platform of the upper truss platform is not less than 70cm, the height of the top surface of the rock anchor beam is not less than 1.10m, and the corner angle of the rock anchor beam is 115-135 degrees.
The buttress concrete is arranged at the lower part of the upper platform concrete foundation and is simultaneously poured with the upper platform concrete foundation to form the concrete-filled steel plate; the width and the thickness of the buttress concrete structure are not less than 400mm, and the height is not less than 2.5 m.
Furthermore, the truss foundation of the lower truss platform is arranged along the side walls excavated on two sides of the bent pipe section, and concrete is poured to form a lower platform concrete foundation of a rock anchor beam structure; the distance between the lower truss platform and the upper truss platform is not less than 5.0 m; a plurality of groups of connecting foundation steel plates are symmetrically arranged on the upper end surface of the lower platform concrete foundation in parallel along the axis of the hole, and the connecting foundation steel plates are welded and connected with the structural steel bars fixedly connected in the lower platform concrete foundation; and the lower platform concrete foundation is provided with two rows of lower platform reinforcing anchor rods from top to bottom, the inner ends of the lower platform reinforcing anchor rods are welded and connected with the structural steel bars fixedly connected in the lower platform concrete foundation, and the outer ends of the lower platform reinforcing anchor rods are fixedly connected with the outer part of the vertical shaft in an anchoring manner.
The width of the top surface of the lower platform concrete foundation rock anchor beam is not less than 40cm, the height of the lower platform concrete foundation rock anchor beam is not less than 1.0m, and the corner angle of the rock anchor beam is 115-135 degrees.
The width and the thickness of the buttress concrete structure are not less than 400mm, and the height is not less than 2.5 m.
The distance between the connection foundation steel plates is consistent with that between the steel truss main beams, the distance is not less than 500mm and not more than 1.0m, the width of the connection foundation steel plates is consistent with that of the upper platform foundation concrete structure, the length is 400-500 mm, and the thickness is 10 mm.
The arrangement distance of the upper platform reinforcing tension anchor rods is not more than 600mm, the row pitch is 300-500 mm, the length is 5.0-7.0 m, and the upper elevation angle is 15-20 degrees; the arrangement distance between the upper platform reinforced compression anchor rods and the anchor rods of the buttress columns is not more than 600mm, the length is not less than 3.0m, and the declination angle is 15-20 degrees; the arrangement distance of the lower platform reinforcing anchor rods is not more than 600mm, the row pitch is 300-500 mm, the length is 3.0-5.0 m, and the upper elevation angle is 5-10 DEG
The utility model has the advantages that: the utility model provides high platform foundation structure's intensity, rigidity and stability have effectively avoided the complicated scheduling problem of conventional platform truss welded quality uncontrollable, inspection difficulty, atress. The utility model discloses the structure can be directly at the horizontal girder of shaft upper portion working face welding, and welding quality is controllable, and the inspection is maintained conveniently, if there is the problem discovery in time. The utility model discloses avoided the platform truss to set up the stand, separated two-layer platform truss completely, the construction is disturbed for a short time, and need not demolish after the construction is accomplished, directly can pour the curved section of later stage and surpass fill the concrete in the surperficial chisel hair, has avoided the construction cost and the safe risk of demolising.
Drawings
FIG. 1 is a longitudinal section of the structural platform foundation of the present invention;
fig. 2 is a cross-sectional view of the structure platform foundation of the present invention.
In the figure, 1 is an upper platform concrete foundation, 2 is a lower platform concrete foundation, 3 is buttress column concrete, 4 is a connecting base steel plate, 5 is an upper platform reinforcing tension anchor rod, 6 is an upper platform reinforcing compression anchor rod, 7 is a buttress column anchor rod, 8 is a lower platform reinforcing anchor rod, 9 is an upper platform truss, 10 is a lower platform truss, alpha is a platform foundation rock anchor beam corner angle, and L is a cavern excavation width.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the invention and is not intended to limit the invention in any way, but is equivalent or analogous to the present invention without departing from its scope.
With reference to the attached drawings.
The utility model discloses platform truss foundation structure includes upper mounting plate concrete foundation 1 and lower mounting plate concrete foundation 2, buttress post concrete 3, connect basic steel sheet 4 and each stock 5, 6, 7, 8 and constitute, during the construction, at first carry out technical expansion with the vertical shaft upper bend and dig, will go up the tunnel face excavation and extend to shaft outside return bend lining interior contour line, for reducing super-excavation and filling out the engineering volume, the partial extension section excavation of return bend can set up the slope, the slope should be 8 ~ 12, cavern excavation width L generally is unanimous with shaft design excavation diameter. After the expanding excavation is finished, reinforcing anchor rods, mounting reinforcing steel bars and connecting foundation steel plates 4 are additionally arranged at the technical overexcavation part, finally, a reinforced concrete foundation is poured by erecting a mold, and the upper platform truss 9 and the lower platform truss 10 can be mounted after the strength of the reinforced concrete reaches over 75 percent.
The upper platform concrete foundation 1 is arranged along the side walls excavated on two sides of the bent pipe section and is formed by pouring concrete; the rock anchor beam structure is arranged, the width of the top surface is not less than 70cm, the height is not less than 1.10m, and the corner angle a of the rock anchor beam is 115-135 degrees; a plurality of groups of connecting foundation steel plates 4 are symmetrically arranged on the top surface of the concrete foundation in parallel along the axis of the hole, and the connecting foundation steel plates 4 are welded and connected with the structural steel bars fixedly connected in the concrete foundation; the concrete foundation sets up three rows from top to bottom and strengthens the stock, and wherein two rows strengthen tensile stock 5 for the upper mounting plate, and one row strengthens pressurized stock 6 for the upper mounting plate. The inner end of the reinforced anchor rod is welded and connected with the structural steel bars fixedly connected with the inner portion of the upper platform concrete foundation 1, and the outer end of the reinforced anchor rod is fixedly connected with the outer portion of the vertical shaft in an anchoring mode.
The lower platform concrete foundation 2 is arranged along the side walls excavated on two sides of the bent pipe section and formed by pouring concrete, the clear distance from the upper platform concrete foundation 1 is not less than 5.0m, the lower platform concrete foundation is arranged to be a rock anchor beam structure, the width of the top surface is not less than 40cm, the height is not less than 1.0m, and the corner angle a of the rock anchor beam is 115-135 degrees. A plurality of groups of connecting base steel plates 4 are symmetrically arranged on the upper end surface of the lower platform concrete foundation 2 in parallel along the hole axis, and the connecting base steel plates 4 are welded and connected with structural steel bars fixedly connected in the lower platform concrete foundation 2; the lower platform concrete foundation 2 is provided with two rows of lower platform reinforcing anchor rods 8 from top to bottom, the inner ends of the lower platform reinforcing anchor rods 8 are welded and connected with the structural steel bars fixedly connected in the lower platform concrete foundation 2, and the outer ends of the lower platform reinforcing anchor rods are fixedly connected with the outer part of the vertical shaft in an anchoring manner.
The distance between the connecting base steel plates 4 of the upper platform truss 9 is consistent with the calculated distance between the main girders of the truss, generally not less than 500mm, not more than 1.0 m. The width of the connecting base steel plate 4 of the lower upper platform truss 10 is consistent with that of the platform concrete structure, and the length is 400-500 mm.
The reinforcing anchor rod is divided into an upper platform reinforcing tension anchor rod 5, an upper platform reinforcing compression anchor rod 6, a buttress column anchor rod 7 and a lower platform reinforcing anchor rod 8, and the diameter of each anchor rod is 25-28 mm. Wherein the arrangement interval of the upper platform reinforced tension anchor rods 5 is not more than 600mm, the row pitch is 300-500 mm, the length of the anchor rods is 5.0-7.0 m, and the upper elevation angle is 15-20 degrees. The arrangement distance between the upper platform reinforcing anchor rod 6 and the buttress column anchor rod 7 is not more than 600mm, the length of the anchor rod is not less than 3.0m, and the declination angle is 15-20 degrees. The lower platform reinforcing anchor rod 8 is arranged at a distance not greater than 600mm, the row spacing is 300-500 mm, the length of the anchor rod is 3.0-5.0 m, and the upper elevation angle is 5-10 degrees.
The foundation concrete and the buttress concrete are cast by the concrete with the reference number of C25-C30, the reinforcing steel bars are arranged in double layers, the diameter of each reinforcing steel bar is 20-25 mm, the distance between the reinforcing steel bars is 20-25 cm, and the thickness of each protective layer is 5-8 cm.
The steel plate thickness of connecting basic steel sheet 4 is 10mm, arranges that the position is unanimous with the horizontal girder position of truss, and connects 4 lower parts of basic steel sheet and arranges the structural reinforcement welding in connecting reinforcement and the reinforced concrete foundation and be in the same place.
After the concrete foundation is poured and reaches the strength of more than 75%, a truss is installed, firstly, a transverse main beam and an embedded connection foundation steel plate 4 are welded and reinforced, and then other longitudinal and transverse secondary beams, a head sheave, an electrical system, a control system, a measuring device and the like are sequentially installed to complete installation of the truss of the system.
Claims (10)
1. The utility model provides a 90 degrees return bend shaft construction platform foundation structure 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 an upper truss platform and a lower truss platform, wherein the upper truss platform and the lower truss platform are respectively fixed on two sides of a concrete structure of a portion, which is expanded and dug, above the vertical shaft section and on the outer contour line of the bent pipe section through truss foundation supports which are independently arranged.
2. The large-diameter 90-degree elbow shaft construction platform foundation structure according to claim 1, wherein: the upper truss platform consists of a truss foundation and a steel truss which are independently arranged, and is arranged outside a bent pipe section concrete lining structural line right above the vertical shaft and horizontally fixed above the lower truss platform; the lower truss platform consists of truss foundations and steel trusses which are independently arranged, and the lower truss platform is arranged on two sides of a concrete lining structure line of a bent pipe section right above the vertical shaft and is horizontally fixed below the upper truss platform; 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 and the height of the suspension cage between the two layers of trusses.
3. The large-diameter 90-degree elbow shaft construction platform foundation structure according to claim 2, wherein: the truss foundation of the upper truss platform consists of an upper platform concrete foundation, buttress column concrete, a connecting foundation steel plate and a reinforcing anchor rod; excavating side walls along two sides of the bent pipe section on the upper platform concrete foundation, and pouring concrete to form a rock anchor beam structure; a plurality of groups of connecting foundation steel plates are symmetrically arranged on the top surface of the upper platform concrete foundation in parallel along the axis of the hole, and the connecting foundation steel plates are welded and connected with the structural steel bars fixedly connected in the upper platform concrete foundation; three rows of reinforcing anchor rods are arranged on the upper platform concrete foundation from top to bottom, wherein two rows are upper platform reinforcing tensile anchor rods, and one row is upper platform reinforcing compression anchor rods; the inner end of each reinforced anchor rod is welded and connected with the structural steel bars fixedly connected with the concrete foundation of the upper platform in an inner mode, and the outer end of each reinforced anchor rod is fixedly connected with the outer portion of the vertical shaft in an anchoring mode.
4. The large-diameter 90-degree elbow shaft construction platform foundation structure according to claim 3, wherein: the width of the top surface of the rock anchor beam of the concrete foundation of the upper platform of the upper truss platform is not less than 70cm, the height of the top surface of the rock anchor beam is not less than 1.10m, and the corner angle of the rock anchor beam is 115-135 degrees.
5. The large-diameter 90-degree elbow shaft construction platform foundation structure according to claim 3, wherein: the buttress concrete is arranged at the lower part of the upper platform concrete foundation and is simultaneously poured with the upper platform concrete foundation to form the concrete-filled steel plate; the width and the thickness of the buttress concrete structure are not less than 400mm, and the height is not less than 2.5 m.
6. The large-diameter 90-degree elbow shaft construction platform foundation structure according to any one of claims 3 to 5, wherein: the truss foundation of the lower truss platform is arranged along the side walls excavated on two sides of the bent pipe section, and concrete is poured to form a lower platform concrete foundation of a rock anchor beam structure; the distance between the lower truss platform and the upper truss platform is not less than 5.0 m; a plurality of groups of connecting foundation steel plates are symmetrically arranged on the upper end surface of the lower platform concrete foundation in parallel along the axis of the hole, and the connecting foundation steel plates are welded and connected with the structural steel bars fixedly connected in the lower platform concrete foundation; and the lower platform concrete foundation is provided with two rows of lower platform reinforcing anchor rods from top to bottom, the inner ends of the lower platform reinforcing anchor rods are welded and connected with the structural steel bars fixedly connected in the lower platform concrete foundation, and the outer ends of the lower platform reinforcing anchor rods are fixedly connected with the outer part of the vertical shaft in an anchoring manner.
7. The large-diameter 90-degree elbow shaft construction platform foundation structure of claim 6, wherein: the width of the top surface of the concrete foundation of the lower platform is not less than 40cm, the height of the top surface of the concrete foundation of the lower platform is not less than 1.0m, and the corner angle of the rock anchor beam is 115-135 degrees.
8. The large-diameter 90-degree elbow shaft construction platform foundation structure of claim 6, wherein: the width and the thickness of the buttress concrete structure are not less than 400mm, and the height is not less than 2.5 m.
9. The large-diameter 90-degree elbow shaft construction platform foundation structure of claim 6, wherein: the distance between the connection foundation steel plates is consistent with that between the steel truss main beams, the distance is not less than 500mm and not more than 1.0m, the width of the connection foundation steel plates is consistent with that of the upper platform foundation concrete structure, the length is 400-500 mm, and the thickness is 10 mm.
10. The large-diameter 90-degree elbow shaft construction platform foundation structure of claim 6, wherein: the arrangement distance of the upper platform reinforcing tension anchor rods is not more than 600mm, the row pitch is 300-500 mm, the length is 5.0-7.0 m, and the upper elevation angle is 15-20 degrees; the arrangement distance between the upper platform reinforced compression anchor rods and the anchor rods of the buttress columns is not more than 600mm, the length is not less than 3.0m, and the declination angle is 15-20 degrees; the arrangement interval of the lower platform reinforcing anchor rods is not more than 600mm, the row pitch is 300-500 mm, the length is 3.0-5.0 m, and the upper elevation angle is 5-10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020718651.5U CN212336072U (en) | 2020-04-30 | 2020-04-30 | 90 degrees return bend shaft construction platform foundation structures of major diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020718651.5U CN212336072U (en) | 2020-04-30 | 2020-04-30 | 90 degrees return bend shaft construction platform foundation structures of major diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212336072U true CN212336072U (en) | 2021-01-12 |
Family
ID=74079010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020718651.5U Active CN212336072U (en) | 2020-04-30 | 2020-04-30 | 90 degrees return bend shaft construction platform foundation structures of major diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212336072U (en) |
-
2020
- 2020-04-30 CN CN202020718651.5U patent/CN212336072U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111945891B (en) | Ring truss high-altitude in-situ splicing construction method | |
| CN201972237U (en) | Section prefabricated rectangular steel pipe concrete truss | |
| CN111424570A (en) | Assembly type trolley for box culvert construction and construction method thereof | |
| CN101446067B (en) | Construction method for Y-shaped frame of large-span steel box basket arch bridge | |
| CN107246016A (en) | A kind of suspension type inner support system and foundation ditch construction method suitable for base pit engineering | |
| CN109680619A (en) | A kind of steel truss beam sling Arch Bridge Construction method big suitable for environmental restrictions | |
| CN113235608A (en) | Enclosure structure for closely penetrating low-clearance bridge and construction method thereof | |
| CN103233426A (en) | Bailey beam support free of buttress in soft foundation and supporting method thereof | |
| CN212611890U (en) | Steel-concrete combined arch bridge crossing karst cave in tunnel | |
| CN202164621U (en) | Tower crane foundation capable of being arranged and assembled | |
| CN212336072U (en) | 90 degrees return bend shaft construction platform foundation structures of major diameter | |
| CN209703316U (en) | A kind of steel truss girder platform for lining big suitable for environmental restrictions | |
| CN112176879A (en) | Bridge pier foundation underpinning structure and construction method | |
| CN209906222U (en) | A loop wheel machine that descends river for large-span steel pipe encircles segment lift shipment | |
| CN217974413U (en) | Deep and shallow foundation pit supporting construction structure | |
| CN215562651U (en) | Enclosure structure for closely penetrating low-clearance bridge | |
| CN210712576U (en) | Multi-hoop truss supporting bailey bracket for cast-in-situ large-span box girder | |
| CN212316712U (en) | Box culvert construction is with assembled platform truck | |
| CN114320388A (en) | Underground excavation large-span station reserved tunnel underpass structure and construction method thereof | |
| CN114809014A (en) | Construction method of pile-anchor combined supporting structure with unloading pipe shed | |
| CN210597375U (en) | Track traffic underground station track panel well with prestressed concrete beam | |
| CN208219667U (en) | Foundation pit supporting construction based on campshed and inner support | |
| CN213953669U (en) | Steel bar supporting device for coal seam interchange roadway | |
| CN221423202U (en) | Double-deck big-arch shelter with door type supports | |
| CN217378925U (en) | Pile-anchor combined supporting structure with unloading pipe shed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |