CN114645619A - Construction method for integrally drawing Gamma steel bundle stranded wire of containment vessel of nuclear power station - Google Patents
Construction method for integrally drawing Gamma steel bundle stranded wire of containment vessel of nuclear power station Download PDFInfo
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- CN114645619A CN114645619A CN202210331690.3A CN202210331690A CN114645619A CN 114645619 A CN114645619 A CN 114645619A CN 202210331690 A CN202210331690 A CN 202210331690A CN 114645619 A CN114645619 A CN 114645619A
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- steel
- winch
- wire rope
- gamma
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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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G2021/127—Circular prestressing of, e.g. columns, tanks, domes
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a construction method for integrally pulling a Gamma steel strand of a containment vessel of a nuclear power station, which comprises the steps of braiding steel strands, connecting the braided steel strands with a steel wire rope of a winch, and integrally pulling the steel strands into corresponding prestressed pipelines by using the winch as power. The invention solves the problems of steel strand waste and low construction efficiency, and adopts the steel strand integral traction construction method, thereby effectively improving the penetration efficiency of the Gamma steel strand and ensuring the technical quality; the loss of the reinforcing steel bar wires is reduced, the loss of materials is reduced, and the construction cost is reduced; the time of the occupied construction key path of the nuclear island prestress construction is shortened, the overall construction efficiency is improved, and effective guarantee is provided for the subsequent prestress construction.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for integrally drawing a Gamma steel strand of a containment vessel of a nuclear power station.
Background
At present, a three-generation nuclear power station adopts a double-shell structure, an inner containment shell adopts a prestressed reinforced concrete structure, prestressed steel beams comprise horizontal steel beams, vertical steel beams and Gamma steel beams, one end of a Gamma steel beam pipeline is anchored in a containment shell prestressed gallery, the other end of the Gamma steel beam pipeline is anchored in a dome ring beam, and the distribution of the steel beams is similar to a Gamma shape.
Due to the construction characteristics of long length of a Gamma steel strand pipeline, large bending radius of a dome part, large number of steel strands and the like, if a traditional steel strand one-by-one strand penetrating process is adopted, when the steel strands pass through a dome and an equipment gate after penetrating into a pore channel, the strand penetrating machine cannot smoothly penetrate the steel strands into the pore channel during strand penetrating due to factors such as large direction change of the steel strands, irregular arrangement in the pipeline and the like, and the problems of low on-site strand penetrating efficiency, high operation risk, large material loss and the like are caused by the fact that the steel strands cannot be pushed into the Gamma steel strand pipeline by the strand penetrating equipment under full load because the direction of a Gamma steel strand hole at a ring beam part is downward in an oblique angle with a containment shell, the anchorage and clamping pieces are difficult to install and reinforce and have high installation safety risk, and the steel strands cannot be pushed into the Gamma steel strand penetrating equipment to enter the Gamma steel strand pipeline for many times on site.
Therefore, an integral traction construction method is needed to replace the traditional bundle penetrating process, so that the problems of steel strand waste and low construction efficiency caused by low bundle penetrating efficiency and repeated disc returning of the Gamma steel bundle pipeline are effectively solved.
Disclosure of Invention
The invention provides a construction method for integrally drawing a Gamma steel strand of a containment vessel of a nuclear power station aiming at the defects in the prior art, and aims to solve the problems of steel strand waste and low construction efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method for integrally towing a Gamma steel bundle stranded wire of a containment vessel of a nuclear power station is characterized by comprising the following steps:
s1: presetting an inner containment shell, presetting a plurality of prestressed pipelines in a concrete structure of the inner containment shell, presetting a circle of prestressed gallery at the lower end of the inner containment shell, and arranging a second winch in the prestressed gallery, wherein the second winch is positioned at an outlet of the prestressed pipelines; a buttress column is arranged on the outer side of the containment inner shell, a containment outer shell is arranged on the periphery of the buttress column, a circle of mounting platform is erected on the outer side wall of the containment inner shell through the buttress column and the containment outer shell, a guide device is arranged on the mounting platform in a sliding mode, and the output end of the guide device corresponds to the inlet of the prestressed pipeline; arranging a suspension system on the outer wall of the inner shell of the containment above the mounting platform, wherein the suspension system is used for placing steel strands; arranging a first winch on the outer wall of the containment shell;
s2: transporting a plurality of steel strands to a suspension system, and bundling the front ends of the plurality of steel strands and setting the front ends of the plurality of steel strands into a guide head, so as to form a group of steel strands;
s3: leading a first steel wire rope of the first winch into the prestressed pipeline through the guide device, and connecting the first steel wire rope with a second steel wire rope of a second winch; then the second steel wire rope is pulled to the inlet of the prestressed pipeline;
s4: separating the first steel wire rope from the second steel wire rope, and fixedly connecting the second steel wire rope with the guide head after passing through the guide device;
s5: starting a second winch, integrally dragging the steel strand bundle positioned in the suspension system into the prestressed pipeline under the coordination of the traction and guide device of the second steel wire rope, and fixing the steel strand bundle transported into the prestressed pipeline;
s6: and then repeating the steps from s2 to s5 to complete the arrangement of the prestressed pipelines.
In order to optimize the technical scheme, the specific measures adopted further comprise:
further, the S2 includes:
s21: the suspension system comprises a wiring pipe and a roller device, and a plurality of steel strands are transported into the wiring pipe for storage, wherein the wiring pipe is a storage pipeline; the front ends of a plurality of steel strands are bundled and set into a guide head;
s22: the first steel wire rope of the first winding machine is pulled through the guide wheel and the pulley device and fixedly connected with the guide head, the first winding machine is started again, the guide head is pulled, the wiring pipe is integrally pulled out of the plurality of steel strands and is arranged on the roller device, the roller device is arranged below the wiring pipe, rollers are arranged at intervals, and the steel strands are arranged on the rollers.
Further, the roller device is provided with rollers in the vertical direction and the horizontal direction.
Further, in S21: and the steel strand is transported to a wiring pipe through a strand pulling machine for storage.
Further, the S4 includes:
s41: fixedly arranging a reinforcing device at the tail end of the group of steel strand bundles;
s42: and separating the first steel wire rope from the second steel wire rope, fixedly connecting the first steel wire rope with the reinforcing device, and fixedly connecting the second steel wire rope with the guide head after passing through the guide device.
Further, the S5 includes:
s51: starting a second winch, and integrally dragging the steel strand bundle positioned in the suspension system into the prestressed pipeline under the coordination of the traction and guide device of the second steel wire rope;
s52: simultaneously starting the first winch, wherein the first winch is matched with the second winch to release the first steel wire rope, so that the whole steel strand bundle is dragged;
furthermore, the reinforcing device comprises an anchorage device, a hoisting unit, a pull ring and a fixed shell, wherein the anchorage device is provided with a plurality of through holes for placing the steel strands, and the outlet of the channel is provided with a fixing device for fixing the placed steel strands; the anchorage device is fixedly connected with the fixed shell through a reinforcing bolt, and the fixed shell is provided with a hoisting unit and a pull ring which are convenient to be connected with the steel wire rope.
Further, the tail end of the through hole is provided with a flaring, and a clamping piece is arranged in the flaring to serve as a fixing device.
Furthermore, the reinforcing device also comprises a spring, and the spring is arranged at the joint of the anchorage device and the fixed shell.
Further, the first winch adopts an 8T winch, and the second winch adopts a 35T winch; the set of steel strand bundles includes 54 steel strands.
The invention has the beneficial effects that:
the invention adopts the steel strand integral traction construction method, effectively improves the penetration efficiency of the Gamma steel strand and ensures the technical quality; the loss of the reinforcing steel bar wires is reduced, the loss of materials is reduced, and the construction cost is reduced; the time of the occupied construction key path of the nuclear island prestress construction is shortened, the overall construction efficiency is improved, and effective guarantee is provided for the subsequent prestress construction.
Drawings
FIG. 1 is a schematic view of the assembly structure of the present invention;
FIG. 2 is a schematic view of a portion of the present invention in use;
FIG. 3 is a schematic diagram of a wiring structure of the present invention;
FIG. 4 is a schematic diagram of a beam programming flow of the present invention;
fig. 5 is a sectional view of a stiffener structure according to the present invention.
Reference numerals: 1. the safety shell comprises a safety shell, 2 parts of a safety shell inner shell, 3 parts of a prestressed pipeline, 4 parts of a loading platform, 5 parts of a platform support column, 6 parts of a guide device, 7 parts of a first winch, 71 parts of a first steel wire rope, 8 parts of a second winch, 81 parts of a second steel wire rope, 9 parts of a guide wheel, 10 parts of a suspension system, 101 parts of a wiring pipe, 102 parts of a roller device, 103 parts of a clamping groove, 11 parts of a steel strand, 12 parts of a pulley device, 13 parts of a sliding device, 14 parts of a supporting device, 15 parts of a reinforcing device, 151 parts of an anchor device, 152 parts of a reinforcing bolt, 153 parts of a hoisting unit, 154 parts of a pull ring, 155 parts of a clamping piece, 156 parts of a spring, 16 parts of a buttress column and 17 parts of a prestressed corridor.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the essential changes.
Referring to the attached drawings, the construction method for integrally towing the Gamma steel bundle steel strand of the containment vessel of the nuclear power station is characterized by comprising the following steps of:
s1: presetting an inner containment shell 2, wherein a plurality of prestressed pipelines 3 are arranged in a concrete structure of the inner containment shell 2, a circle of prestressed gallery 17 is preset at the lower end of the inner containment shell 2, a second winch 8 is arranged in the prestressed gallery 17, and the second winch 8 is positioned at an outlet of the prestressed pipelines 3; a buttress column 16 is arranged on the outer side of the containment inner shell 2, a containment outer shell 1 is arranged on the periphery of the buttress column 16, a circle of mounting platform 4 is erected on the outer side wall of the containment inner shell 2 through the buttress column 16, the containment outer shell 1 and a platform strut 5, a guide device 6 is arranged on the mounting platform 4 in a sliding mode, and the sliding arrangement can be realized through a sliding chute and other devices; the output end of the guide device 6 corresponds to the inlet of the prestressed pipe 3 through the adjustment of a supporting device, and the supporting device can adopt a jack; a suspension system 10 is arranged on the outer wall of the containment shell 2 above the mounting platform 4, and the suspension system 10 is used for placing a steel strand 11; a first winch 7 is arranged on the outer wall of the containment shell 2;
s2: transporting a plurality of steel strands 11 to a suspension system 10, and then weaving the front ends of the plurality of steel strands 11 and setting the front ends into a guide head, so as to form a group of steel strand bundles;
s3: leading a first steel wire rope 71 of the first winch 7 into the prestressed pipe 3 through the guide device 6, and connecting the first steel wire rope 71 with a second steel wire rope 81 of a second winch 8; then the second steel wire rope 81 is pulled to the inlet of the prestressed pipe 3;
s4: a reinforcing device 15 is fixedly arranged at the tail end of the group of steel strand bundles so as to reinforce the traction stability of the steel strand bundles, the first steel wire rope 71 and the second steel wire rope 81 are separated, the first steel wire rope 71 and the reinforcing device 15 are fixedly connected, and the second steel wire rope 81 is fixedly connected with the guide head after passing through the guide device 6;
s5: starting a second winch 8, and integrally dragging the steel strand bundle positioned in the suspension system 10 into the prestressed pipeline 3 under the coordination of the traction device 6 of the second steel wire rope 81; the first winch 7 is matched with the second winch 8 to release the first steel wire rope 71, and the whole steel strand bundle is dragged, so that the movement of the steel strand bundle is limited, and the steel strand bundle is prevented from rapidly falling in the prestressed pipeline 3; then, fixing the steel strand bundle conveyed into the prestressed pipe 3;
s6: and then, repeating the steps from s2 to s5 to complete the arrangement of the plurality of prestressed pipes 3.
In this embodiment, the S2 includes:
s21: the suspension system 10 comprises a wiring pipe 101 and a roller device 102, and a plurality of steel stranded wires 11 are transported into the wiring pipe 101 for storage, wherein the wiring pipe 101 is a storage pipeline; the front ends of a plurality of steel strands 11 are bundled and set as a guide head, so that a group of steel strand bundles are formed, wherein the wiring pipe 101 is convenient to bundle and place due to the lack of a sliding device;
s22: the first steel wire rope 71 of the first winch 7 is fixedly connected with the guide head through traction of the guide wheel 9 and the pulley device 12, the first winch 7 is started again, the guide head is pulled, the steel strand bundle is integrally pulled out of the wiring pipe 101 and placed on the roller device 102, the roller device 102 is arranged below the wiring pipe 101, rollers are arranged at intervals, and the steel strand bundle is placed on the rollers and is convenient to move along with the guide device 6 according to the position of the prestressed pipeline 3.
In this embodiment, the roller device 102 is provided with rollers in both vertical and horizontal directions to prevent damage during towing.
In this embodiment, in S21: the steel strand 11 is transported to the wiring pipe 101 by a strand pulling machine for storage.
In this embodiment, the reinforcing device 15 includes an anchorage device 151, a lifting unit 153, a pull ring 154, and a fixing housing, where the anchorage device 151 has a plurality of through holes for placing the steel strand 11 therein, and an outlet of the channel is provided with a fixing device for fixing the placed steel strand 11; the anchorage 151 is fixedly connected to a fixed housing through a reinforcing bolt 152, and a lifting unit 153 and a pull ring 154 are provided on the fixed housing for facilitating connection with a wire rope. The tail end of the through hole is arranged to be a flaring, a clamping piece 155 is arranged in the flaring and serves as a fixing device, and the steel strand 11 is fixed through the clamping piece 155 and the flaring. The reinforcing device 15 further includes a spring 156, and the spring 156 is disposed at the joint of the anchor 151 and the fixed housing, so as to prevent the steel strand 11 from being damaged or slipping due to excessive rigidity when being pulled.
In this embodiment, the first winch 7 is an 8T winch, and the second winch 8 is a 35T winch. The set of steel strand bundles comprises 54 steel strands 11.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention may be apparent to those skilled in the relevant art and are intended to be within the scope of the present invention.
Claims (10)
1. A construction method for integrally towing a Gamma steel bundle stranded wire of a containment vessel of a nuclear power station is characterized by comprising the following steps:
s1: the method comprises the steps that an inner containment shell (2) is preset, a plurality of prestressed pipelines (3) are preset in a concrete structure of the inner containment shell (2), a circle of prestressed corridor (17) is preset at the lower end of the inner containment shell (2), a second winch (8) is arranged in the prestressed corridor (17), and the second winch (8) is located at an outlet of the prestressed pipeline (3); a buttress column (16) is arranged on the outer side of the inner containment shell (2), a containment shell (1) is arranged on the periphery of the buttress column (16), a circle of mounting platform (4) is erected on the outer side wall of the inner containment shell (2) through the buttress column (16) and the containment shell (1), a guide device (6) is arranged on the mounting platform (4) in a sliding mode, and the output end of the guide device (6) corresponds to the inlet of the prestressed pipeline (3); a suspension system (10) is arranged on the outer wall of the containment shell (2) above the mounting platform (4), and the suspension system (10) is used for placing steel strands (11); a first winch (7) is arranged on the outer wall of the inner containment shell (2);
s2: conveying a plurality of steel strands (11) to a suspension system (10), and then weaving the front ends of the plurality of steel strands (11) and setting the front ends into a guide head to form a group of steel strand bundles;
s3: leading a first steel wire rope (71) of the first winch (7) into the prestressed pipeline (3) through the guide device (6) and connecting the first steel wire rope with a second steel wire rope (81) of a second winch (8); then drawing the second steel wire rope (81) to the inlet of the prestressed pipe (3);
s4: the first steel wire rope (71) is separated from the second steel wire rope (81), and the second steel wire rope (81) is fixedly connected with the guide head after passing through the guide device (6);
s5: starting a second winch (8), integrally dragging the steel strand bundle positioned in the suspension system (10) into the prestressed pipeline (3) under the coordination of the traction and guide device (6) of the second steel wire rope (81), and fixing the steel strand bundle transported into the prestressed pipeline (3);
s6: and then repeating the steps from s2 to s5 to complete the arrangement of the plurality of prestressed pipelines (3).
2. The construction method for integrally towing the Gamma steel bundle strand of the containment vessel of the nuclear power plant as claimed in claim 1, wherein the S2 comprises:
s21: the suspension system (10) comprises a wiring pipe (101) and a roller device (102), a plurality of steel stranded wires (11) are transported into the wiring pipe (101) for storage, and the wiring pipe (101) is a storage pipeline; the front ends of a plurality of steel stranded wires (11) are bundled and set into a guide head;
s22: with the traction of first wire rope (71) of first winch (7) through leading wheel (9) and pulley gear (12), with direction head fixed connection, restart first winch (7), pull the direction head, will several steel strand wires (11) are whole to be hauled out wire arrangement pipe (101), and place in on roller device (102), roller device (102) set up the below of wire arrangement pipe (101) to the interval sets up the cylinder, steel strand wires (11) are placed in on the cylinder.
3. The construction method for integrally drawing the Gamma steel bundle stranded wire of the containment vessel of the nuclear power plant as claimed in claim 2, wherein the construction method comprises the following steps: the roller device (102) is provided with rollers in the vertical direction and the horizontal direction.
4. The construction method for integrally pulling the Gamma steel bundle strand of the containment vessel of the nuclear power plant as claimed in claim 3, wherein in the step S21: and the steel strand (11) is transported to a wiring pipe (101) through a strand pulling machine for storage.
5. The construction method for integrally drawing the Gamma steel strand of the containment vessel of the nuclear power plant as claimed in claim 1 or 4, wherein the S4 comprises the following steps:
s41: a reinforcing device (15) is fixedly arranged at the tail end of the group of steel strand bundles;
s42: the first steel wire rope (71) is separated from the second steel wire rope (81), the first steel wire rope (71) is fixedly connected with the reinforcing device (15), and the second steel wire rope (81) is fixedly connected with the guide head after passing through the guide device (6).
6. The construction method for integrally pulling the Gamma steel strand of the containment vessel of the nuclear power plant as claimed in claim 5, wherein the S5 comprises:
s51: starting a second winch (8), and integrally dragging the steel strand bundle positioned in the suspension system (10) into the prestressed pipeline (3) under the coordination of the traction and guide device (6) of the second steel wire rope (81);
s52: and simultaneously starting the first winch (7), wherein the first winch (7) is matched with the second winch (8) to release the first steel wire rope (71) to integrally drag the steel strand bundle.
7. The construction method for integrally towing the Gamma steel bundle stranded wire of the containment vessel of the nuclear power plant according to claim 6, characterized in that: the reinforcing device (15) comprises an anchorage device (151), a hoisting unit (153), a pull ring (154) and a fixing shell, wherein the anchorage device (151) is provided with a plurality of through holes for placing the steel stranded wires (11), and the outlet of the channel is provided with a fixing device for fixing the placed steel stranded wires (11); the anchor (151) is fixedly connected with the fixed shell through a reinforcing bolt (152), and a hoisting unit (153) and a pull ring (154) which are convenient to be connected with a steel wire rope are arranged on the fixed shell.
8. The construction method for integrally towing the Gamma steel bundle stranded wire of the containment vessel of the nuclear power plant according to claim 7, characterized in that: the tail end of the through hole is arranged into a flaring, and a clamping piece (155) is arranged in the flaring and serves as a fixing device.
9. The construction method for integrally towing the Gamma steel bundle stranded wire of the containment vessel of the nuclear power plant according to claim 8, characterized in that: the reinforcing device (15) further comprises a spring (156), and the spring (156) is arranged at the joint of the anchorage device (151) and the fixed shell.
10. The construction method for integrally drawing the Gamma steel bundle stranded wire of the containment vessel of the nuclear power plant as claimed in claim 9, wherein the construction method comprises the following steps: the first winch (7) adopts an 8T winch, and the second winch (8) adopts a 35T winch; the group of steel strand bundles comprises 54 steel strands (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210331690.3A CN114645619B (en) | 2022-03-31 | 2022-03-31 | Construction method for integrally pulling Gamma steel strand of containment vessel of nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210331690.3A CN114645619B (en) | 2022-03-31 | 2022-03-31 | Construction method for integrally pulling Gamma steel strand of containment vessel of nuclear power station |
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| CN114645619A true CN114645619A (en) | 2022-06-21 |
| CN114645619B CN114645619B (en) | 2023-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045512A (en) * | 2022-07-20 | 2022-09-13 | 中国核工业二四建设有限公司 | Device and method for integrally penetrating prestressed super-long annular steel bundle in nuclear power station |
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| KR20040069656A (en) * | 2003-01-30 | 2004-08-06 | 노윤근 | Maintenance and reinforcing apparatus for section enlargement for reinforcing bearing power of pier in reinforced concrete bridge and construction method of repairing and reinforcing for section enlargement using the apparatus |
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| CN115045512A (en) * | 2022-07-20 | 2022-09-13 | 中国核工业二四建设有限公司 | Device and method for integrally penetrating prestressed super-long annular steel bundle in nuclear power station |
| CN115045512B (en) * | 2022-07-20 | 2023-08-04 | 中国核工业二四建设有限公司 | Integral beam penetrating device and method for prestressed ultra-long circumferential steel beam of nuclear power station |
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| Publication number | Publication date |
|---|---|
| CN114645619B (en) | 2023-08-11 |
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