CN111731985A - Nuclear power station shielding wall SC structure module hoisting method - Google Patents
Nuclear power station shielding wall SC structure module hoisting method Download PDFInfo
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- CN111731985A CN111731985A CN202010497229.6A CN202010497229A CN111731985A CN 111731985 A CN111731985 A CN 111731985A CN 202010497229 A CN202010497229 A CN 202010497229A CN 111731985 A CN111731985 A CN 111731985A
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- hoisting
- balance beam
- structure module
- module
- sling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a method for hoisting SC structure modules of a shielding wall of a nuclear power station, which comprises the following steps: dividing the SC structure module into four parts, and respectively calculating the lifting point positions of the four parts; hoisting mechanisms are arranged at the four hoisting points; calculating the position of a primary balance beam according to the position of the center of gravity of the module, and calculating the position of a secondary balance beam according to the position of the primary balance beam and the position of a lifting point; the hoisting rigging is utilized to sequentially connect a primary balance beam, a secondary balance beam and a hoisting mechanism from top to bottom, and the primary balance beam is connected with a crane hook through the hoisting rigging. The invention adopts the secondary balance beam for hoisting, so that the steel wire rope and the module are guaranteed to be vertically hoisted, the module is not subjected to horizontal component force, and the deformation of the module in the hoisting process is effectively controlled; the hoisting rigging is prevented from colliding with the CV structure adjacent to the SC structure; the hoisting times are effectively reduced, the safety risk of the hoisting quality is reduced, the construction cost is reduced, and the hoisting quality of the module can be effectively ensured.
Description
Technical Field
The invention belongs to the technical field of nuclear power construction and construction, and particularly relates to a method for hoisting an SC structure module of a shielding wall of a nuclear power station.
Background
The shielding factory building of the CAP1400 nuclear power station is one of the most important structures of the nuclear power station for resisting internal and external accidents, has the main functions of radiation shielding, missile protection, passive cooling, tornado and earthquake event resistance and the like, and is designed to have a steel plate concrete structure, namely an SC structure module, which is adopted for the first time in order to further improve the capacity of the reactor factory building for resisting the internal and external accidents, and the SC structure module has the characteristics of small overall rigidity, large local rigidity and easy deformation in hoisting; meanwhile, the SC structure module has high installation precision requirement: radius, elevation installation tolerance are 3mm, and the high altitude is corrected the difficulty, and the quality control degree of difficulty is big, and SC structure submodule quantity is many moreover, if adopt traditional unit module hoist and mount mode, and the hoist and mount number of times is many, and hoist and mount quality safety risk is big, and is with high costs, the period of construction is long.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for hoisting an SC structure module of a shielding wall of a nuclear power station aiming at the defects of the prior art.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a method for hoisting an SC structure module of a shielding wall of a nuclear power station, wherein the SC structure module is an overlong annular combined module formed by combining a plurality of unit modules with uneven mass distribution and anchoring steel bars, comprises the following steps:
step S1: dividing the SC structure module into four parts, and respectively calculating the lifting point positions of the four parts;
step S2: hoisting mechanisms are arranged at the four hoisting points;
step S3, calculating the position of the primary balance beam according to the position of the center of gravity of the module, and calculating the position of the secondary balance beam according to the position of the primary balance beam and the position of the lifting point;
step S4: the hoisting rigging is utilized to sequentially connect a primary balance beam, a secondary balance beam and a hoisting mechanism from top to bottom, and the primary balance beam is connected with a crane hook through the hoisting rigging.
In order to optimize the technical scheme, the specific measures adopted further comprise:
further, in step 1, the center of gravity position of the SC structure module is calculated, the position of a crane hook is located on the vertical upper portion of the center of gravity position, the SC structure module is divided into two parts, two sub center of gravity positions are obtained, the SC structure module is divided into four parts according to the two sub center of gravity positions, four sub center of gravity positions are obtained, and the four sub center of gravity positions are the positions of the module hoisting points.
Further, in step S2, the hoisting mechanism includes a steel plate tool, a profile steel tool, and a lifting lug, the steel plate tool is welded to the SC structure module, the profile steel tool is connected to the adjacent steel plate tool, and the lifting lug is fixedly mounted on the profile steel tool.
Further, in step S3, the end portions of the primary balance beam and the secondary balance beam are provided with upper hoisting holes and lower hoisting holes.
Further, in step S4, the hoist rigging includes a first-stage hoist rigging, a second-stage hoist rigging, and a third-stage hoist rigging, one end of the first-stage hoist rigging is connected to the crane hook, and the other end is connected to the hoisting hole at the upper portion of the first-stage balance beam through a shackle;
one end of the second-stage sling is connected with a hoisting hole at the lower part of the first-stage balance beam through a shackle, and the other end of the second-stage sling is connected with a hoisting hole at the upper part of the second-stage balance beam through a shackle;
one end of the third-level sling is connected with a hoisting hole at the lower part of the second-level balance beam through a shackle, the other end of the third-level sling is connected with a lifting lug on the SC structure module through a sling screw, and the third-level sling is perpendicular to the SC structure module.
Furthermore, the primary balance beam and the secondary balance beam are of multi-section structures, and all the sections are connected and fixed through high-strength bolts.
The invention has the beneficial effects that:
compared with the traditional hoisting method, the hoisting method of the SC structure module of the shielding wall of the nuclear power station adopts the secondary balance beam for hoisting, so that the steel wire rope and the module are guaranteed to be vertically hoisted, the module is not subjected to horizontal component force, and the deformation in the hoisting process of the module is effectively controlled; the distribution of the suspension rigging is effectively distributed, and the collision of the suspension rigging and the adjacent structure of the SC structure module is avoided; the hoisting times are effectively reduced, the safety risk of hoisting quality is reduced, the construction cost is reduced, and the construction period is shortened. The hoisting method is simple and easy to implement, and can effectively ensure the hoisting quality of the module.
Drawings
FIG. 1 is a schematic view of the hoisting of an SC structure module;
FIG. 2 is a schematic view of a secondary balance beam;
FIG. 3 is a schematic view of a primary equalizer beam;
figure 4 is a schematic view of a lifting lug.
The reference signs are: the device comprises a unit module 1, anchoring steel bars 2, a secondary balance beam 3, a primary balance beam 4, a hoisting mechanism 5, a steel plate tool 5-1, a profile steel tool 5-2, a lifting lug 5-3, a primary hoisting rigging 6, a secondary hoisting rigging 7, a tertiary hoisting rigging 8 and a rigging screw buckle 9.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the invention relates to a method for hoisting an SC structure module of a shielding wall of a nuclear power plant, wherein the SC structure module comprises 5 unit modules and anchoring steel bars, the arc length of the module is 32.2m, the height of the module is 5.65m, the weight of the module is 82t, the mass distribution of the module is uneven, one side of each anchoring steel bar is heavier, and five unit modules comprise four transverse unit modules and one vertical unit module.
Step S1: dividing the SC structure module into four parts, and respectively calculating the lifting point positions of the four parts;
the method specifically comprises the following steps: the method comprises the steps of firstly calculating the gravity center position of an SC structure module, dividing the SC structure module into two parts to obtain two sub gravity center positions, and then dividing the SC structure module into four parts according to the two sub gravity center positions to obtain four sub gravity center positions, wherein the four sub gravity center positions are the module hoisting point positions.
Step S2: hoisting mechanisms are arranged at the four hoisting points;
the method specifically comprises the following steps: the hoisting mechanism 5 comprises a steel plate tool 5-1, a profile steel tool 5-2 and a lifting lug 5-3, wherein the steel plate tool 5-1 is welded with the SC structure module, the profile steel tool 5-2 is connected with the adjacent steel plate tool 5-1, and the lifting lug 5-3 is fixedly installed on the profile steel tool 5-2.
Step S3: calculating the position of the primary balance beam 4 according to the position of the center of gravity of the module, and calculating the position of the secondary balance beam 3 according to the position of the primary balance beam 4 and the position of the lifting point;
the method specifically comprises the following steps: the maximum length of the first-stage balance beam 4 is 16.5m, the maximum length of the second-stage balance beam 3 is 8.5.m, the end parts of the first-stage balance beam 4 and the second-stage balance beam 3 are respectively provided with an upper hoisting hole and a lower hoisting hole, and the rated load of the first-stage balance beam 4 and the second-stage balance beam 3 is 110 t.
Step S4: the method comprises the following steps that a first-stage balance beam 4, a second-stage balance beam 3 and a hoisting mechanism 5 are sequentially connected from top to bottom by using a hoisting rigging, and the first-stage balance beam 4 is connected with a crane hook through the hoisting rigging;
the method specifically comprises the following steps: the suspension cable comprises a primary suspension cable 6, a secondary suspension cable 7 and a tertiary suspension cable 8, wherein one end of the primary suspension cable 6 is connected with a crane hook, and the other end of the primary suspension cable is connected with a hoisting hole in the upper part of the primary balance beam 4 through a shackle;
one end of the second-stage sling 7 is connected with a hoisting hole at the lower part of the first-stage balance beam 4 through a shackle, and the other end of the second-stage sling is connected with a hoisting hole at the upper part of the second-stage balance beam 3 through a shackle;
one end of the third-level sling 8 is connected with a hoisting hole at the lower part of the second-level balance beam 3 through a shackle, the other end of the third-level sling is connected with a lifting lug 5-3 on the SC structure module through a sling screw 9, the third-level sling 8 is vertical to the SC structure module, the first-level balance beam 4 and the second-level balance beam 3 are both of a multi-section structure, and all the sections are connected and fixed through high-strength bolts.
After the connection of the hoisting rigging is completed, a hoisting command issues a hoisting command, the crane slowly lifts the hook to enable the SC structure module to suspend for 5min at a certain distance from the ground, the states of the levelness of the module, the hoisting rigging and the crane are observed, when the levelness is deviated, the module is leveled by adopting a rigging screw buckle, and the module continues to be hoisted until the module is hoisted in place after the leveling is completed.
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 embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (6)
1. The method for hoisting the SC structure module of the shielding wall of the nuclear power station is characterized by comprising the following steps of:
step S1: dividing the SC structure module into four parts, and respectively calculating the lifting point positions of the four parts;
step S2: hoisting mechanisms are arranged at the four hoisting points;
step S3: calculating the position of the primary balance beam (4) according to the gravity center position of the module, and calculating the position of the secondary balance beam (3) according to the position of the primary balance beam (4) and the lifting point position;
step S4: the crane lifting device is characterized in that a first-stage balance beam (4), a second-stage balance beam (3) and a lifting mechanism (5) are sequentially connected from top to bottom by a lifting rigging, and the first-stage balance beam (4) is connected with a crane lifting hook through the lifting rigging.
2. The hoisting method of the SC structure module of the shielding wall of the nuclear power plant as recited in claim 1, wherein the hoisting method comprises the following steps: in the step 1, the gravity center position of the SC structure module is calculated, the crane hook position is located on the vertical upper portion of the gravity center position, the SC structure module is divided into two parts, two sub gravity center positions are obtained, then the SC structure module is divided into four parts according to the two sub gravity center positions, four sub gravity center positions are obtained, and the four sub gravity center positions are the module hanging point positions.
3. The hoisting method of the SC structure module of the shielding wall of the nuclear power plant as recited in claim 2, is characterized in that: in the step S2, the hoisting mechanism (5) comprises a steel plate tool (5-1), a section steel tool (5-2) and a lifting lug (5-3), the steel plate tool (5-1) is connected with the SC structure module in a welding mode, the section steel tool (5-2) is connected with the adjacent steel plate tool (5-1), and the lifting lug (5-3) is fixedly installed on the section steel tool (5-2).
4. The hoisting method of the SC structure module of the shielding wall of the nuclear power plant as recited in claim 3, is characterized in that: in the step S3, the ends of the primary balance beam (4) and the secondary balance beam (3) are provided with upper hoisting holes and lower hoisting holes.
5. The hoisting method of the SC structure module of the shielding wall of the nuclear power plant as recited in claim 4, is characterized in that: in the step S4, the sling comprises a primary sling (6), a secondary sling (7) and a tertiary sling (8), wherein one end of the primary sling (6) is connected with a crane hook, and the other end of the primary sling is connected with a hoisting hole in the upper part of the primary balance beam (4) through a shackle;
one end of the secondary sling (7) is connected with a hoisting hole at the lower part of the primary balance beam (4) through a shackle, and the other end of the secondary sling is connected with a hoisting hole at the upper part of the secondary balance beam (3) through a shackle;
one end of the third-level sling (8) is connected with a hoisting hole at the lower part of the second-level balance beam (3) through a shackle, the other end of the third-level sling is connected with a lifting lug (5-3) on the SC structure module through a sling screw (9), and the third-level sling (8) is vertical to the SC structure module.
6. The hoisting method of the SC structure module of the shielding wall of the nuclear power plant as recited in claim 5, is characterized in that: the primary balance beam (4) and the secondary balance beam (3) are both of a multi-section structure, and the sections are fixedly connected through high-strength bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010497229.6A CN111731985A (en) | 2020-06-03 | 2020-06-03 | Nuclear power station shielding wall SC structure module hoisting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010497229.6A CN111731985A (en) | 2020-06-03 | 2020-06-03 | Nuclear power station shielding wall SC structure module hoisting method |
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| CN111731985A true CN111731985A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010497229.6A Pending CN111731985A (en) | 2020-06-03 | 2020-06-03 | Nuclear power station shielding wall SC structure module hoisting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303927A (en) * | 2021-05-07 | 2022-11-08 | 中国核工业二三建设有限公司 | Layered hoisting method for large-size variable-section thin-shell type hot chamber shell |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU541772A1 (en) * | 1975-09-08 | 1977-01-05 | Центральный научно-исследовательский и проектно-экспериментальный институт организации, механизации и технической помощи строительству Госстроя СССР | Load gripping device |
| JPS5697899A (en) * | 1980-01-07 | 1981-08-06 | Hitachi Ltd | Cask hanger |
| CN201534745U (en) * | 2009-08-14 | 2010-07-28 | 中远船务工程集团有限公司 | Multifunctional hoisting bar |
| CN102009909A (en) * | 2010-11-19 | 2011-04-13 | 太原重工股份有限公司 | Multi-lifting point hanger for lifting nuclear power station module |
| CN106081870A (en) * | 2016-08-12 | 2016-11-09 | 河北省电力建设第工程公司 | A kind of nuclear power station steel dome balance hanging method |
| CN206969995U (en) * | 2017-04-25 | 2018-02-06 | 广东力特工程机械有限公司 | A kind of suspender of nuclear power plant nuclear island main equipment |
| CN110217686A (en) * | 2019-05-18 | 2019-09-10 | 陕西建工第五建设集团有限公司 | A kind of put down based on the flat steel reinforcement cage for hanging equipment of steel reinforcement cage hangs method |
-
2020
- 2020-06-03 CN CN202010497229.6A patent/CN111731985A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU541772A1 (en) * | 1975-09-08 | 1977-01-05 | Центральный научно-исследовательский и проектно-экспериментальный институт организации, механизации и технической помощи строительству Госстроя СССР | Load gripping device |
| JPS5697899A (en) * | 1980-01-07 | 1981-08-06 | Hitachi Ltd | Cask hanger |
| CN201534745U (en) * | 2009-08-14 | 2010-07-28 | 中远船务工程集团有限公司 | Multifunctional hoisting bar |
| CN102009909A (en) * | 2010-11-19 | 2011-04-13 | 太原重工股份有限公司 | Multi-lifting point hanger for lifting nuclear power station module |
| CN106081870A (en) * | 2016-08-12 | 2016-11-09 | 河北省电力建设第工程公司 | A kind of nuclear power station steel dome balance hanging method |
| CN206969995U (en) * | 2017-04-25 | 2018-02-06 | 广东力特工程机械有限公司 | A kind of suspender of nuclear power plant nuclear island main equipment |
| CN110217686A (en) * | 2019-05-18 | 2019-09-10 | 陕西建工第五建设集团有限公司 | A kind of put down based on the flat steel reinforcement cage for hanging equipment of steel reinforcement cage hangs method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303927A (en) * | 2021-05-07 | 2022-11-08 | 中国核工业二三建设有限公司 | Layered hoisting method for large-size variable-section thin-shell type hot chamber shell |
| CN115303927B (en) * | 2021-05-07 | 2023-09-08 | 中国核工业二三建设有限公司 | Layered hoisting method for large-size variable-section thin-shell type hot chamber shell |
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Application publication date: 20201002 |
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