CN117449596A - Construction method for installing steel structure elevator shaft on outer side of hydropower station dam - Google Patents
Construction method for installing steel structure elevator shaft on outer side of hydropower station dam Download PDFInfo
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- CN117449596A CN117449596A CN202311633272.0A CN202311633272A CN117449596A CN 117449596 A CN117449596 A CN 117449596A CN 202311633272 A CN202311633272 A CN 202311633272A CN 117449596 A CN117449596 A CN 117449596A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 238000010276 construction Methods 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000008093 supporting effect Effects 0.000 claims description 5
- 230000009193 crawling Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 description 4
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/12—Arch dams
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/005—Lift shafts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a construction method for installing a steel structure elevator shaft at the outer side of a hydropower station dam, which comprises the following steps: 1. assembling a base section H-shaped assembling piece and a standard section H-shaped assembling piece; 2. installing a foundation section well on a concrete foundation; 3. at least two standard section shafts are sequentially installed at the top end of a base section shaft from bottom to top; 4. and constructing a connecting truss on the auxiliary frame layer at the bottommost part of each standard section well from bottom to top. According to the invention, the connecting trusses are arranged on each standard section well, so that the stability of the whole steel structure elevator well is improved, the hoisting equipment, the self-locking operation platform and the construction hanging basket are combined, the hoisting equipment is alternately recycled to hoist the self-locking operation platform and steel members required by the assembled steel structure elevator well, and the aim of sequentially installing at least two standard section wells from bottom to top at the top end of the base section well along with the lifting of the self-locking operation platform is fulfilled.
Description
Technical Field
The invention belongs to the technical field of steel structure elevator shaft construction, and particularly relates to a construction method for installing a steel structure elevator shaft outside a hydropower station dam.
Background
At present, two new steel structure elevator shafts are mainly arranged on the outer side of a building, wherein the first method is to splice and assemble each part of the steel structure elevator shaft from bottom to top layer by layer, such as upright post parts, beam parts, connecting steel plates, high-strength bolts and the like, but the method needs to set up construction scaffolds around the steel structure elevator shaft, the construction scaffolds need to synchronously ascend along with the assembly of the steel structure elevator shaft, and after the steel structure elevator shaft is assembled, the construction scaffolds need to be dismantled from top to bottom, so that the construction process is complex and the labor intensity is high; firstly, assembling each part of the steel structure elevator shaft into segmented modules, and then hoisting and splicing each module block by using large-scale hoisting equipment, wherein the method requires that the surrounding environment is not limited, the large-scale hoisting equipment can be arranged in place and can normally operate, and construction scaffolds are also required to be erected around the steel structure elevator shaft; when a steel structure elevator shaft is newly built on the outer side of a building such as an existing hydropower station dam, the height of the hydropower station dam is high, the width of the dam is limited, the surrounding environment of the bottom of the dam is complex, and a construction scaffold is inconvenient to set up; accordingly, a construction method for installing a steel structure elevator shaft outside a hydroelectric dam that is convenient for construction should be provided.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a construction method for installing a steel structure elevator shaft outside a hydropower station dam, which has simple structure and reasonable design, and the connection truss is arranged on each standard section shaft, so that the connection between the standard section shaft and a concrete arch dam is realized by using the connection truss, the stability of the whole steel structure elevator shaft is improved, and the lifting equipment, the self-locking operation platform and a construction basket are combined to alternately and circularly use the lifting equipment to lift the self-locking operation platform and steel members required by assembling the steel structure elevator shaft, so that the aim of sequentially installing at least two standard section shafts from bottom to top at the top end of a foundation section shaft is fulfilled along with the lifting of the self-locking operation platform.
In order to solve the technical problems, the invention adopts the following technical scheme: a construction method for installing a steel structure elevator shaft on the outer side of a hydropower station dam is characterized by comprising the following steps of: the steel structure elevator well is positioned on a concrete foundation outside the concrete arch dam and comprises a foundation section well which is positioned at the bottommost part and fixedly connected with the concrete foundation and at least two standard section wells which are sequentially arranged at the top of the foundation section well from bottom to top; the foundation section well comprises a foundation buried plate embedded in the concrete foundation and at least four foundation upright posts vertically arranged on the foundation buried plate, and a foundation ring beam is arranged between two adjacent foundation upright posts; the standard festival well comprises a standard upright post arranged at the top end of the foundation upright post and at least two standard ring beam layers which are distributed at intervals along the height direction of the standard upright post, an auxiliary frame layer is distributed between every two adjacent standard ring beam layers, each standard ring beam layer comprises at least four standard ring beams which are positioned in the same horizontal plane, each auxiliary frame layer comprises at least four auxiliary ring beams which are positioned in the same horizontal plane, a connecting truss which is used for being connected with a concrete arch dam is arranged on the auxiliary frame layer positioned at the bottommost layer, each connecting truss comprises at least two transverse connecting rods which are distributed in parallel and at least two longitudinal connecting rods which are connected with the transverse connecting rods, a diagonal connecting rod is arranged between the transverse connecting rod positioned at the outermost side and the outer side wall of the concrete arch dam, one end of each transverse connecting rod is fixedly connected with the auxiliary ring beam which is distributed transversely, the other end of each transverse connecting rod is connected with the outer side wall of the arch dam, and a truss part which is used for being connected with the transverse connecting rod or the diagonal connecting rod is embedded on the outer side wall of the concrete arch dam;
the construction method comprises the following steps:
step one, assembling a base section H-shaped assembling piece and a standard section H-shaped assembling piece:
assembling two foundation upright posts and one foundation ring beam to form a foundation section H-shaped assembling piece, and assembling two standard upright posts and one standard ring beam to form a standard section H-shaped assembling piece;
step two, installing the foundation section well on a concrete foundation, wherein the concrete process comprises the following steps:
step 201, embedding a foundation buried plate in the concrete foundation;
step 202, hoisting at least two H-shaped spliced members of the foundation sections in sequence by using hoisting equipment positioned at the top end of a concrete arch dam, and vertically and fixedly installing the H-shaped spliced members on a foundation buried plate;
step 203, erecting a scaffold operation platform between at least two H-shaped assembling pieces of the foundation section, and installing the rest foundation ring beams;
step three, sequentially installing at least two standard section shafts from bottom to top at the top end of the base section shaft, wherein the specific process comprises the following steps:
step 301, arranging a self-locking type operation platform at the top end of the foundation section well by using the hoisting equipment, so that the self-locking type operation platform is erected on foundation ring beams of two oppositely arranged foundation section H-shaped assembly pieces;
the self-locking type operation platform comprises a rectangular operation platform matched with the inner cavity of the steel structure elevator shaft and self-locking components arranged at four corners of the rectangular operation platform;
step 302, hoisting two standard-section H-shaped assembled parts, at least two standard ring beams and at least two auxiliary ring beams in sequence by using the hoisting equipment, and assembling a first standard-section well on the self-locking type operation platform by an operator;
step 303, lifting the self-locking type operation platform upwards by using lifting equipment, so that the self-locking type operation platform is erected on two standard ring beams which are oppositely arranged on a first standard joint well which is oppositely arranged;
step 304, hoisting two standard-section H-shaped assembled parts, at least two standard ring beams and at least two auxiliary ring beams in sequence by using the hoisting equipment, and assembling a second standard-section well on the self-locking type operation platform by an operator;
step 305, repeating step 303 and step 304 until all the standard joint shafts are assembled;
step four, constructing a connecting truss on an auxiliary frame layer positioned at the bottommost part of each standard section well from bottom to top in sequence, wherein the construction method of each connecting truss is the same, and the construction process of any connecting truss is as follows:
step 401, hanging a construction hanging basket at the top end of a concrete arch dam to the bottom of any standard section well, and installing truss embedded parts by using the construction hanging basket to punch holes and plant ribs on the outer side wall of the concrete arch dam by constructors;
step 402, arranging a self-locking type operation platform in any one of the standard section shafts by using the hoisting equipment;
step 403, hoisting any one transverse connecting rod of the connecting truss by using the hoisting equipment, and respectively installing and fixing two ends of the transverse connecting rod by using a self-locking type working platform and a construction hanging basket by constructors;
step 404, hoisting the longitudinal connecting rods of any connecting truss by using the hoisting equipment, paving flat plates above the transverse connecting rods by using a self-locking operation platform block by block along the direction from the standard section well to the direction of approaching the concrete arch dam by using the self-locking operation platform to form a temporary operation platform, and installing at least two longitudinal connecting rods by using the temporary operation platform;
step 405, hoisting any one cable-stayed connecting rod of the connecting truss by using the hoisting equipment, and installing the cable-stayed connecting rod by using a temporary working platform and a construction hanging basket by constructors;
step 406, removing the slabs block by block along the direction approaching to the standard section well from the concrete arch dam until the temporary working platform is completely removed.
The construction method for installing the steel structure elevator shaft on the outer side of the hydropower station dam is characterized by comprising the following steps of: the rectangular operation platform comprises a rectangular frame, a back-shaped cover plate fixedly paved in the rectangular frame and a central cover plate hinged on the back-shaped cover plate through a hinge, wherein a plurality of reinforcing rods which are crossed transversely and longitudinally and used for supporting the back-shaped cover plate are arranged in the rectangular frame, and a square manhole is formed between the four reinforcing rods which are crossed transversely and longitudinally.
The construction method for installing the steel structure elevator shaft on the outer side of the hydropower station dam is characterized by comprising the following steps of: the self-locking assembly comprises limiting plates which are rotatably installed at four corners of the rectangular frame through pin shafts, and limiting cushion blocks are arranged below one end, far away from the rectangular frame, of each limiting plate.
The construction method for installing the steel structure elevator shaft on the outer side of the hydropower station dam is characterized by comprising the following steps of: the self-locking type working platform is characterized in that a manned hanging basket is arranged right below the self-locking type working platform, a ladder stand is arranged in the manned hanging basket, and constructors in the manned hanging basket can enter the self-locking type working platform through the ladder stand and the square manhole.
The construction method for installing the steel structure elevator shaft on the outer side of the hydropower station dam is characterized by comprising the following steps of: two lifting lugs which are symmetrically distributed are arranged on the top surface of the back-shaped cover plate.
The construction method for installing the steel structure elevator shaft on the outer side of the hydropower station dam is characterized by comprising the following steps of: and a patterned steel plate is paved on the temporary working platform.
Compared with the prior art, the invention has the following advantages:
1. according to the construction method combining the lifting equipment, the self-locking type working platform and the construction hanging basket, not only is the lifting equipment utilized to carry out on-site lifting of steel components such as the foundation section H-shaped assembly, the standard section H-shaped assembly, the foundation ring beam, the standard ring beam and the auxiliary ring beam, but also the lifting equipment is utilized to carry out lifting of the self-locking type working platform, the lifting equipment is recycled alternately, and along with lifting of the self-locking type working platform, the purpose that at least two standard section shafts are sequentially installed at the top end of a foundation section shaft from bottom to top is achieved.
2. In the first step of the invention, a plurality of basic section H-shaped assembling pieces and a plurality of standard section H-shaped assembling pieces are assembled firstly, the basic section H-shaped assembling pieces and the standard section H-shaped assembling pieces are respectively used as an assembling module, and the basic section H-shaped assembling pieces or the standard section H-shaped assembling pieces are hoisted by hoisting equipment once; the foundation section H-shaped assembly part and the standard section H-shaped assembly part provide stable support for the erection of the self-locking type operation platform, a constructor can assemble a first standard section well on the self-locking type operation platform only by firstly erecting the self-locking type operation platform on two foundation section H-shaped assembly parts which are oppositely arranged, and only by erecting the self-locking type operation platform on two standard section H-shaped assembly parts which are oppositely arranged on the next layer, the constructor can assemble the last layer of standard section well on the self-locking type operation platform.
3. In the second step of the invention, because the structure of the foundation section well is not identical with that of the standard section well, the bottom end of the foundation section well needs to be fixedly arranged in the concrete foundation, the foundation section well needs to have a stable supporting effect on the standard section well above, the foundation section well is positioned at the lowest end, a scaffold operation platform can be erected between at least two H-shaped assembled parts of the foundation section, and the scaffold operation platform is utilized for installing the rest foundation ring beams.
4. According to the invention, the connecting trusses are arranged on the auxiliary frame layer of each standard section well and positioned at the bottommost layer, the connecting trusses are used for realizing the connection between the standard section well and the concrete arch dam, the stability of the whole steel structure elevator well is improved, and when the connecting trusses are constructed, the connecting trusses are connected between the outer side wall of the concrete arch dam and the standard section well by utilizing the construction hanging basket, the lifting equipment, the self-locking operation platform and the temporary operation platform.
In summary, the invention has simple structure and reasonable design, the connection truss is arranged on each standard section well, the connection truss is utilized to realize the connection between the standard section well and the concrete arch dam, the stability of the whole steel structure elevator well is improved, and the lifting equipment is alternately recycled to lift the self-locking operation platform and steel components required by the assembled steel structure elevator well by the construction method combining the lifting equipment, the self-locking operation platform and the construction hanging basket, so that the aim of sequentially installing at least two standard section wells from bottom to top at the top end of the foundation section well is fulfilled along with the lifting of the self-locking operation platform.
The invention is described in further detail below with reference to the drawings and examples.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2 is a schematic view of the construction state of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic diagram of the connection relationship between the self-locking type working platform and the standard hoistway.
Fig. 5 is a top view of fig. 4.
FIG. 6 is a schematic diagram of the connection relationship of the rectangular frame, the reinforcing rods and the self-locking assembly of the present invention.
Reference numerals illustrate:
Detailed Description
The construction method for installing a steel structure elevator shaft outside a hydropower station dam is shown in fig. 1, 2 and 3, wherein the steel structure elevator shaft is positioned on a concrete foundation 2 outside a concrete arch dam 1, and comprises a foundation section shaft which is positioned at the bottommost part and fixedly connected with the concrete foundation 2 and at least two standard section shafts which are sequentially arranged at the top of the foundation section shaft from bottom to top; the foundation section well comprises a foundation buried plate 3-1 pre-buried in the concrete foundation 2 and at least four foundation upright posts 3-2 vertically arranged on the foundation buried plate 3-1, and a foundation ring beam 3-3 is arranged between two adjacent foundation upright posts 3-2; the standard joint well comprises a standard upright post 4-1 arranged at the top end of a foundation upright post 3-1 and at least two standard ring beam layers distributed at intervals along the height direction of the standard upright post 4-1, an auxiliary frame layer is distributed between every two adjacent standard ring beam layers, the standard ring beam layers comprise at least four standard ring beams 4-2 positioned in the same horizontal plane, each auxiliary frame layer comprises at least four auxiliary ring beams 4-3 positioned in the same horizontal plane, a connecting truss used for being connected with a concrete arch dam 1 is arranged on the auxiliary frame layer positioned at the bottommost layer, each connecting truss comprises at least two transverse connecting rods 5-1 distributed in parallel and at least two longitudinal connecting rods 5-2 connected with the transverse connecting rods 5-1, each connecting rod 5-3 is arranged between the transverse connecting rod 5-1 positioned at the outermost side and the outer side wall of the concrete arch dam 1, one end of each transverse connecting rod 5-1 is fixedly connected with the corresponding auxiliary ring beam 4-3 positioned in the same horizontal plane, the other end of each transverse connecting rod 5-1 is connected with the outer side wall of the concrete arch dam 1 or the outer side wall of the concrete arch 1 is connected with the corresponding transverse connecting rod 5-1;
the construction method comprises the following steps:
step one, assembling a base section H-shaped assembling piece and a standard section H-shaped assembling piece:
assembling two foundation upright posts 3-2 and one foundation ring beam 3-3 to form a foundation section H-shaped assembling piece, and assembling two standard upright posts 4-1 and one standard ring beam 4-2 to form a standard section H-shaped assembling piece;
step two, installing the foundation section well on the concrete foundation 2, wherein the concrete process comprises the following steps:
step 201, embedding a foundation buried plate 3-1 in the concrete foundation 2;
step 202, hoisting at least two foundation section H-shaped assembled parts in sequence by using hoisting equipment 6 positioned at the top end of a concrete arch dam 1 and vertically and fixedly installing the foundation section H-shaped assembled parts on a foundation buried plate 3-1;
step 203, erecting a scaffold operation platform between at least two H-shaped assembling pieces of the foundation section, and installing the rest foundation ring beams 3-3;
step three, sequentially installing at least two standard section shafts from bottom to top at the top end of the base section shaft, wherein the specific process comprises the following steps:
step 301, arranging a self-locking type operation platform at the top end of the foundation section well by using the hoisting equipment 6, so that the self-locking type operation platform is erected on the foundation ring beams 3-3 of the two oppositely arranged foundation section H-shaped assembly pieces;
the self-locking type operation platform comprises a rectangular operation platform 8 matched with the inner cavity of the steel structure elevator shaft and self-locking components arranged at four corners of the rectangular operation platform 8;
step 302, hoisting two standard-section H-shaped assembled parts, at least two standard ring beams 4-2 and at least two auxiliary ring beams 4-3 in sequence by using the hoisting equipment 6, and assembling a first standard-section well on the self-locking type operation platform by an operator;
step 303, lifting the self-locking type operation platform upwards by using lifting equipment 6, so that the self-locking type operation platform is erected on two oppositely arranged standard ring beams 4-2 of a first oppositely arranged standard joint well;
step 304, hoisting two standard-section H-shaped assembled parts, at least two standard ring beams 4-2 and at least two auxiliary ring beams 4-3 in sequence by using the hoisting equipment 6, and assembling a second standard-section well on the self-locking type operation platform by an operator;
step 305, repeating step 303 and step 304 until all the standard joint shafts are assembled;
step four, constructing a connecting truss on an auxiliary frame layer positioned at the bottommost part of each standard section well from bottom to top in sequence, wherein the construction method of each connecting truss is the same, and the construction process of any connecting truss is as follows:
step 401, hanging a construction hanging basket from the top end of the concrete arch dam 1 to the bottom of any standard section well, and installing truss embedded parts 5-4 by using the construction hanging basket to punch holes and plant bars on the outer side wall of the concrete arch dam 1 by constructors;
step 402, arranging a self-locking type working platform in any one of the standard section shafts by using the lifting equipment 6;
step 403, hoisting the transverse connecting rod 5-1 of any connecting truss by using the hoisting equipment 6, and respectively installing and fixing two ends of the transverse connecting rod 5-1 by using a self-locking working platform and a construction hanging basket by constructors;
step 404, hoisting the longitudinal connecting rods 5-2 of any connecting truss by using the hoisting equipment 6, paving a flat plate above the transverse connecting rods 5-1 by using a self-locking operation platform block by block along the direction from the standard section well to the concrete arch dam 1 to form a temporary operation platform, and installing at least two longitudinal connecting rods 5-2 by using the temporary operation platform;
step 405, hoisting the cable-stayed connecting rod 5-3 of any one connecting truss by using the hoisting equipment 6, and installing the cable-stayed connecting rod 5-3 by using a temporary working platform and a construction hanging basket by constructors;
step 406, removing the slabs block by block along the direction approaching to the standard section well from the concrete arch dam 1 until the temporary working platform is completely removed.
In this embodiment, in the construction process of installing steel structure elevator shafts outside a hydroelectric dam, because the outside of the hydroelectric dam is close to the existing mountain 7, the space where the concrete foundation 2 is located is narrow, the number of steel structure elevator shafts to be built is two, the net depth of a single steel structure elevator shaft is 2410mm, the net width is 2850mm, under the limited condition, the condition that construction scaffolds are erected around the steel structure elevator shaft is not provided, the condition that the steel structure elevator shaft is assembled and hoisted in sections is not provided, therefore, the construction method of combining the hoisting equipment 6, the self-locking type operation platform and the construction hanging basket is provided by combining the specification model of the hoisting equipment 6 which can operate at the top end of the concrete arch dam 1, not only the field hoisting of steel members such as the foundation section H-shaped assembly, the standard section H-shaped assembly, the foundation ring beam 3-3, the standard ring beam 4-2 and the auxiliary ring beam 4-3 is carried out by the hoisting equipment 6, but also the self-locking type operation platform is carried out by the hoisting equipment 6, and the self-locking type operation platform is alternately circulated, and the self-locking type operation is carried out along with the hoisting equipment 6, and the hoisting equipment 6 is carried out at the hoisting equipment, and the self-locking type operation platform is carried by the hoisting equipment.
In the first embodiment, in the first step, a plurality of base section H-shaped assembled parts and a plurality of standard section H-shaped assembled parts are assembled first, and the advantage thereof is that: firstly, the condition of sectionally assembling and sectionally hoisting a steel structure elevator shaft is not provided, but the condition that two foundation upright posts 3-2 and one foundation ring beam 3-3 required by a foundation section shaft are assembled to form a foundation section H-shaped assembled part, two standard upright posts 4-1 and one standard ring beam 4-2 required by a standard section shaft are assembled to form a standard section H-shaped assembled part, namely the foundation section H-shaped assembled part and the standard section H-shaped assembled part are respectively used as an assembled module, and the condition that the foundation section H-shaped assembled part or the standard section H-shaped assembled part is hoisted by hoisting equipment 6 for one time is provided; the second, basic festival H shape is assembled a and standard festival H shape and is provided stable support for setting up of self-locking type operation platform, only set up the self-locking type operation platform on two basic festival H shape that lay relatively first standard festival well's assembly on self-locking type operation platform earlier, only set up the self-locking type operation platform on two standard festival H shape that lay relatively of next floor and assemble the piece, the constructor just can carry out the assembly of the former layer standard festival well on self-locking type operation platform.
In this embodiment, in the second step, since the structure of the foundation section well is not identical to the structure of the standard section well, the bottom end of the foundation section well needs to be fixedly installed in the concrete foundation 2, the foundation section well needs to have a stable supporting effect on the standard section well above, the foundation section well is located at the lowest end, and the scaffold operation platform can be erected between at least two of the H-shaped assembled parts of the foundation section, so that the scaffold operation platform is used for installing the remaining foundation ring beams 3-3, and since the height of the scaffold operation platform does not exceed the height of the foundation ring beams 3-3 of the foundation section well, and is located between at least two of the H-shaped assembled parts of the foundation section, the volume is small, the erection and the dismantling are convenient, and the construction efficiency of the installation of the foundation section well is improved.
In this embodiment, a connection truss is disposed on an auxiliary frame layer located at the bottommost layer of each standard section shaft, and connection between the standard section shaft and the concrete arch dam 1 is achieved by using the connection truss, so that stability of the whole steel structure elevator shaft is improved.
In this embodiment, the connection truss includes transverse connection pole 5-1, longitudinal connection pole 5-2 and draws connecting rod 5-3 to one side, transverse connection pole 5-1's one end with be transversely laid supplementary collar tie beam 4-3 fixed connection, transverse connection pole 5-1's the other end is connected on the lateral wall of concrete arch dam 1, draw connecting rod 5-3's one end to one side and connect on transverse connection pole 5-1, draw connecting rod 5-3's the other end to one side and connect on the lateral wall of concrete arch dam 1, during actual use, a plurality of connection trusses can share the load that basic festival well bore, and two draw connecting rods 5-3 can widen the connection scope between standard festival well and the concrete arch dam 1, connect reliably, stable in structure.
In the fourth embodiment, in the step, when the connecting truss is constructed, the connecting truss is connected between the outer side wall of the concrete arch dam 1 and the standard section shaft by using the construction basket, the lifting device 6 and the self-locking working platform, and the truss embedded parts 5-4 are embedded on the outer side wall of the concrete arch dam 1, so that the other end of the transverse connecting rod 5-1 or the other end of the inclined pulling connecting rod 5-3 is connected on the truss embedded parts 5-4, and therefore, constructors use the construction basket to punch holes and plant bars to install the truss embedded parts 5-4.
After the installation of the transverse connecting rod 5-1 is completed, a constructor needs to utilize a self-locking operation platform to lay flat plates above the transverse connecting rod 5-1 block by block along the direction from the standard section well to the approach direction of the concrete arch dam 1, so as to form a temporary operation platform, and the temporary operation platform is utilized for installing at least two longitudinal connecting rods 5-2; then, the temporary operation platform and the construction hanging basket are simultaneously utilized to install the cable-stayed connecting rod 5-3; the construction flow is reasonable in design, high in safety and convenient to popularize and apply.
As shown in fig. 4, 5 and 6, in this embodiment, the rectangular working platform 8 includes a rectangular frame 8-1, a back-shaped cover plate 8-4 fixedly laid in the rectangular frame 8-1, and a central cover plate 8-5 hinged on the back-shaped cover plate 8-4 by a hinge 8-6, wherein a plurality of reinforcing rods 8-2 for supporting the back-shaped cover plate 8-4 are arranged in the rectangular frame 8-1 and are crossed horizontally and vertically, and a square manhole 8-3 is formed between the four reinforcing rods 8-2 crossed horizontally and vertically.
When in actual use, the central cover plate 8-5 can be opened upwards around the hinge 8-6, the square manhole 8-3 is positioned right below the central cover plate 8-5, the central cover plate 8-5 is opened, constructors can enter the rectangular working platform 8 through the square manhole 8-3, the central cover plate 8-5 is closed, and the constructors can walk and construct on the rectangular working platform 8.
In this embodiment, the self-locking assembly includes a limiting plate 9-1 rotatably mounted at four corners of the rectangular frame 8-1 through a pin 9-2, and a limiting cushion block 9-3 is disposed below one end of the limiting plate 9-1 far away from the rectangular frame 8-1.
In actual use, when the lifting device 6 is used for lifting the rectangular operation platform 8, and one end of the limiting plate 9-1, which is far away from the limiting cushion block 9-3, touches the standard ring beam 4-2 or the auxiliary ring beam 4-3, and one end of the limiting plate 9-1, which is far away from the limiting cushion block 9-3, rotates downwards around the pin shaft 9-2, so that the rectangular operation platform 8 can move upwards in the standard section shaft, and when the lifting device 6 drives the rectangular operation platform 8 to descend, one end of the limiting plate 9-1, which is far away from the limiting cushion block 9-3, touches the standard ring beam 4-2 or the auxiliary ring beam 4-3, and the limiting cushion block 9-3 can prevent the one end of the limiting plate 9-1, which is far away from the limiting cushion block 9-3, from rotating upwards around the pin shaft 9-2, so that one end of the limiting plate 9-1, which is far away from the limiting cushion block 9-3, can be clamped on the standard ring beam 4-2 or the auxiliary ring beam 4-3, and the rectangular operation platform 8 can be erected on the standard ring beam 4-2 or the auxiliary ring beam 4-3.
In this embodiment, two lifting lugs 8-4-1 which are symmetrically arranged are arranged on the top surface of the zigzag cover plate 8-4.
In actual installation, the steel wire rope 6-1 of the hoisting equipment 6 is connected to the two lifting lugs 8-4-1, so that the rectangular working platform 8 can be kept balanced in the lifting process.
In this embodiment, the patterned steel plate is laid on the temporary working platform, and in actual use, the patterned steel plate is laid on the temporary working platform, so that the safety of the temporary working platform is improved, after the installation of the longitudinal connecting rod 5-2 and the diagonal connecting rod 5-3 is completed, the patterned steel plate can be removed first, and then the flat plate is removed one by one along the direction from the concrete arch dam 1 to the standard section well until the temporary working platform is completely removed.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. A construction method for installing a steel structure elevator shaft on the outer side of a hydropower station dam is characterized by comprising the following steps of: the steel structure elevator well is positioned on a concrete foundation (2) outside the concrete arch dam (1), and comprises a foundation section well which is positioned at the bottommost part and fixedly connected with the concrete foundation (2) and at least two standard section wells which are sequentially arranged at the top of the foundation section well from bottom to top; the foundation section well comprises a foundation buried plate (3-1) embedded in the concrete foundation (2) and at least four foundation upright posts (3-2) vertically arranged on the foundation buried plate (3-1), and a foundation ring beam (3-3) is arranged between two adjacent foundation upright posts (3-2); the standard festival well comprises a standard upright post (4-1) arranged at the top end of the foundation upright post (3-1) and at least two standard ring beam layers distributed at intervals along the height direction of the standard upright post (4-1), an auxiliary frame layer is distributed between every two adjacent standard ring beam layers, the standard ring beam layer comprises at least four standard ring beams (4-2) positioned in the same horizontal plane, the auxiliary frame layer comprises at least four auxiliary ring beams (4-3) positioned in the same horizontal plane, a connecting truss used for being connected with a concrete arch dam (1) is arranged on the auxiliary frame layer positioned at the bottommost layer, the connecting truss comprises at least two transverse connecting rods (5-1) which are distributed in parallel and at least two longitudinal connecting rods (5-2) connected with the transverse connecting rods (5-1), a cable-stayed connecting rod (5-3) is arranged between the transverse connecting rod (5-1) positioned at the outermost side and the outer side wall of the concrete arch dam (1), one end of the transverse connecting rod (5-1) is fixedly connected with the other end of the transverse connecting rod (5-1) on the side wall of the concrete arch dam (4-1), truss embedded parts (5-4) used for being connected with the transverse connecting rods (5-1) or the cable-stayed connecting rods (5-3) are embedded in the outer side wall of the concrete arch dam (1);
the construction method comprises the following steps:
step one, assembling a base section H-shaped assembling piece and a standard section H-shaped assembling piece:
assembling two foundation upright posts (3-2) and one foundation ring beam (3-3) to form a foundation section H-shaped assembling piece, and assembling two standard upright posts (4-1) and one standard ring beam (4-2) to form a standard section H-shaped assembling piece;
step two, installing the foundation section well on a concrete foundation (2), wherein the concrete process comprises the following steps:
step 201, embedding a foundation buried plate (3-1) in the concrete foundation (2);
step 202, hoisting at least two foundation section H-shaped assembled parts in sequence by using hoisting equipment (6) positioned at the top end of a concrete arch dam (1) and vertically and fixedly installing the foundation section H-shaped assembled parts on a foundation buried plate (3-1);
step 203, erecting a scaffold operation platform between at least two H-shaped assembling pieces of the foundation section, and installing the rest foundation ring beams (3-3);
step three, sequentially installing at least two standard section shafts from bottom to top at the top end of the base section shaft, wherein the specific process comprises the following steps:
step 301, arranging a self-locking type operation platform at the top end of the foundation section well by using the hoisting equipment (6), so that the self-locking type operation platform is erected on foundation ring beams (3-3) of two oppositely arranged foundation section H-shaped assembly pieces;
the self-locking type operation platform comprises a rectangular operation platform (8) matched with the inner cavity of the steel structure elevator shaft and self-locking components arranged at four corners of the rectangular operation platform (8);
step 302, hoisting two standard knot H-shaped spliced pieces, at least two standard ring beams (4-2) and at least two auxiliary ring beams (4-3) in sequence by using the hoisting equipment (6), and splicing a first standard knot well on the self-locking type operation platform by an operator;
step 303, lifting the self-locking type operation platform upwards by using lifting equipment (6) to enable the self-locking type operation platform to be erected on two oppositely arranged standard ring beams (4-2) of a first oppositely arranged standard joint well;
step 304, hoisting two standard-section H-shaped assembled parts, at least two standard ring beams (4-2) and at least two auxiliary ring beams (4-3) in sequence by using the hoisting equipment (6), and assembling a second standard-section well on the self-locking type operation platform by an operator;
step 305, repeating step 303 and step 304 until all the standard joint shafts are assembled;
step four, constructing a connecting truss on an auxiliary frame layer positioned at the bottommost part of each standard section well from bottom to top in sequence, wherein the construction method of each connecting truss is the same, and the construction process of any connecting truss is as follows:
step 401, hanging a construction hanging basket at the top end of a concrete arch dam (1) to the bottom of any standard section well, and installing truss embedded parts (5-4) by using the construction hanging basket to punch holes and plant ribs on the outer side wall of the concrete arch dam (1) by constructors;
step 402, arranging a self-locking type working platform in any one of the standard section shafts by using the lifting equipment (6);
step 403, hoisting any transverse connecting rod (5-1) of the connecting truss by using the hoisting equipment (6), and respectively installing and fixing two ends of the transverse connecting rod (5-1) by using a self-locking type working platform and a construction hanging basket by constructors;
step 404, hoisting the longitudinal connecting rods (5-2) of any connecting truss by using the hoisting equipment (6), paving a flat plate above the transverse connecting rods (5-1) by using a self-locking operation platform block by block along the direction from the standard section well to the approach direction of the concrete arch dam (1) by using a constructor to form a temporary operation platform, and installing at least two longitudinal connecting rods (5-2) by using the temporary operation platform;
step 405, hoisting any one cable-stayed connecting rod (5-3) of the connecting truss by using the hoisting equipment (6), and installing the cable-stayed connecting rod (5-3) by using a temporary working platform and a construction hanging basket by constructors;
step 406, removing the slabs block by block along the direction approaching to the standard section well from the concrete arch dam (1) until the temporary working platform is completely removed.
2. A method of installing a steel structure elevator hoistway outside a hydroelectric dam as defined in claim 1, wherein: the rectangular operation platform (8) comprises a rectangular frame (8-1), a rectangular cover plate (8-4) fixedly paved in the rectangular frame (8-1) and a central cover plate (8-5) hinged on the rectangular cover plate (8-4) through a hinge (8-6), wherein a plurality of reinforcing rods (8-2) which are transversely and longitudinally crossed and used for supporting the rectangular cover plate (8-4) are arranged in the rectangular frame (8-1), and a square manhole (8-3) is formed between the four reinforcing rods (8-2) which are transversely and longitudinally crossed.
3. A method of installing a steel structure elevator hoistway outside a hydroelectric dam as defined in claim 2, wherein: the self-locking assembly comprises limiting plates (9-1) rotatably mounted at four corners of the rectangular frame (8-1) through pin shafts (9-2), and limiting cushion blocks (9-3) are arranged below one end, far away from the rectangular frame (8-1), of the limiting plates (9-1).
4. A method of installing a steel structure elevator hoistway outside a hydroelectric dam as defined in claim 2, wherein: the self-locking type operation platform is characterized in that a manned hanging basket (10) is arranged right below the self-locking type operation platform, a crawling ladder is arranged in the manned hanging basket (10), and constructors in the manned hanging basket (10) can enter the self-locking type operation platform through the crawling ladder and the square manhole (8-3).
5. A method of installing a steel structure elevator hoistway outside a hydroelectric dam as defined in claim 2, wherein: two lifting lugs (8-4-1) which are symmetrically distributed are arranged on the top surface of the inverted-U-shaped cover plate (8-4).
6. A method of installing a steel structure elevator hoistway outside a hydroelectric dam as defined in claim 1, wherein: and a patterned steel plate is paved on the temporary working platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311633272.0A CN117449596A (en) | 2023-11-30 | 2023-11-30 | Construction method for installing steel structure elevator shaft on outer side of hydropower station dam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311633272.0A CN117449596A (en) | 2023-11-30 | 2023-11-30 | Construction method for installing steel structure elevator shaft on outer side of hydropower station dam |
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| CN117449596A true CN117449596A (en) | 2024-01-26 |
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| CN202311633272.0A Pending CN117449596A (en) | 2023-11-30 | 2023-11-30 | Construction method for installing steel structure elevator shaft on outer side of hydropower station dam |
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| Country | Link |
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| CN (1) | CN117449596A (en) |
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