CN117211545A - A construction support device and method for CAP1400 nuclear island heavy-duty shear wall reinforced cage module - Google Patents
A construction support device and method for CAP1400 nuclear island heavy-duty shear wall reinforced cage module Download PDFInfo
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- CN117211545A CN117211545A CN202310876972.6A CN202310876972A CN117211545A CN 117211545 A CN117211545 A CN 117211545A CN 202310876972 A CN202310876972 A CN 202310876972A CN 117211545 A CN117211545 A CN 117211545A
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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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Abstract
The invention discloses a construction supporting device and a construction supporting method for a CAP1400 nuclear island heavy shear wall reinforcement cage module, wherein the construction supporting device comprises lateral stabilizing supports, and the lateral stabilizing supports are arranged on two sides of the reinforcement cage module; the lateral stabilizing support comprises a steel bar clamp, two plane trusses and horizontal connecting rods, wherein the two plane trusses are provided with the horizontal connecting rods, and the steel bar clamp is arranged at the top of each plane truss; the plane truss comprises a first vertical rod, a second vertical rod, an inclined vertical rod, a horizontal web member, an inclined web member and a fixing bolt mounting hole; the first upright rod is positioned at one side close to the reinforcement cage module, and the second upright rod is positioned at one side far away from the reinforcement cage module; the upper portion of second pole setting sets up oblique pole setting, set up horizontal web member and oblique web member between first pole setting, second pole setting and the oblique pole setting. The lateral stability of the reinforcement cage module can be improved, the construction risk is reduced, the occupied time of a crane is shortened, and the overall efficiency and the economical efficiency of the reinforcement cage modular construction are improved.
Description
Technical Field
The invention belongs to the technical field of assembly type and modularized construction of third-generation nuclear power plants, and particularly relates to a construction supporting device and method for a CAP1400 nuclear island heavy shear wall reinforcement cage module.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
CAP1400 is the latest passive large-scale advanced pressurized water reactor nuclear motor unit developed in China. In order to meet the structural safety requirements under the working conditions of earthquakes and extreme accidents, the CAP1400 nuclear island factory building adopts a heavy reinforced concrete shear wall structure to bear huge design loads. Compared with a conventional shear wall (the wall thickness is 200-300 mm, one layer of reinforcing steel bar net is arranged on each side), the structural design parameters of the heavy shear wall are greatly increased, the wall thickness can reach 1000-1200 mm, more than two layers of reinforcing steel bar nets are arranged on each side, and the engineering quantity of the reinforcing steel bar cage of the shear wall is greatly increased.
In order to improve the construction efficiency and quality of the heavy shear wall reinforcement and reduce the labor intensity and construction risk of site constructors, the traditional manual root-by-root positioning and binding mode is gradually replaced by a reinforcement cage modularized construction method. In the modularized construction, firstly, a reinforcement cage module is manufactured in a factory, and after the reinforcement cage module is transported to a construction site, the reinforcement cage module is hung to an installation position by using a crane, and the reinforcement cage main reinforcement is connected with main reinforcements of surrounding constructed walls by using reinforcement sleeves. The inventors found that the following problems exist in the current construction method: because the reinforcement cage module lacks from steady ability before the main muscle is connected and is accomplished, in order to prevent that the reinforcement cage module from taking place unstably, need use the crane to hoist reinforcement cage module for a long time, until the main muscle is accomplished after being connected completely, the side can carry out crane and pluck the operation of colluding. For the heavy reinforcement cage module, because the number of main reinforcements is large and the connecting joints are numerous, the installation time of the reinforcement sleeve is long, so that the occupied time of a crane is long, the service efficiency of a site crane is greatly reduced, other procedures requiring crane auxiliary operation cannot be normally carried out in the same period, and the improvement range of the overall construction efficiency of the reinforcement cage modularized construction method is greatly influenced. In addition, because the crane occupies a long time, the work cost of the crane is greatly increased, and the overall economy of the reinforcement cage modularized construction is deteriorated.
At present, patent research and application on supporting devices and methods in the shear wall reinforcement cage modularization construction process are not yet available. Patent publication number CN 113732216A proposes a dysmorphism steel reinforcement cage strutting arrangement and construction method, and strutting arrangement includes holding ring, actuating mechanism, running gear, lifting mechanism and walking guide rail, mainly used solves the welding problem when there is dysmorphism stirrup in the circular steel reinforcement cage of bored concrete pile. Patent publication number CN 112359836a proposes a major diameter pile foundation reinforcement cage strutting arrangement and construction method, including the support frame that becomes closed state, a plurality of support pieces of array along support frame circumference mainly provide vertical support for the connection of the circular reinforcement cage of major diameter bored concrete pile. The two patents are used for producing and installing the circular reinforcement cage of the cast-in-place pile, and cannot solve the problems that the sheet reinforcement cage module of the heavy shear wall of the nuclear island lacks self-stabilizing capability in the installation process and occupies long crane time.
Disclosure of Invention
Aiming at the problems, the invention provides the construction supporting device and the method for the reinforcement cage module of the CAP1400 nuclear island heavy shear wall, which can increase the lateral stability of the reinforcement cage module, reduce the construction risk, shorten the occupied time of a crane and improve the overall efficiency and the economical efficiency of the reinforcement cage modular construction.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the construction supporting device for the CAP1400 nuclear island heavy shear wall reinforcement cage module comprises lateral stabilizing supports, wherein the lateral stabilizing supports are arranged on two sides of the reinforcement cage module; the lateral stabilizing support comprises a steel bar clamp, two plane trusses and horizontal connecting rods, wherein the two plane trusses are provided with the horizontal connecting rods, and the steel bar clamp is arranged at the top of each plane truss;
the plane truss comprises a first vertical rod, a second vertical rod, an inclined vertical rod, a horizontal web member, an inclined web member and a fixing bolt mounting hole; the first upright rod is positioned at one side close to the reinforcement cage module, and the second upright rod is positioned at one side far away from the reinforcement cage module; the upper portion of second pole setting sets up oblique pole setting, set up horizontal web member and oblique web member between first pole setting, second pole setting and the oblique pole setting.
Further, the fixing bolt mounting holes are arranged on the first vertical rod and the second vertical rod, and the positions of the fixing bolt mounting holes on the first vertical rod and the second vertical rod are aligned; the fixing bolt mounting holes are internally penetrated by the fixing bolts.
Further, the lateral stabilizing support is fixed on the constructed shear wall through fixing bolts, and the fixing bolts penetrate through fixing bolt mounting holes in the lateral stabilizing support and are screwed into embedded bolt sleeves on the constructed shear wall.
Further, threads are arranged at two ends of the fixing bolt, and threads are not arranged in the middle of the fixing bolt; the screw thread setting length of the fixing bolt arranged at one end of the embedded bolt sleeve is smaller than the screw thread setting length of the fixing bolt arranged at one end of the lateral stabilizing support; one end of the fixing bolt in the lateral stabilizing support is provided with a fixing nut.
Further, the reinforcement clamp comprises a first clamping piece, a second clamping piece, a clamp stud, a clamp nut, a clamp stay bar and a clamp perforation.
Further, two ends of the first clamping piece and the second clamping piece are straight sections, and the middle part is an arc section; a clamp perforation is arranged on the straight section of the first clamping piece; and a clamp stay bar is arranged on the arc section of the second clamping piece and is connected with the plane truss.
Further, a clamp bolt is arranged on the inner side of the straight section of the second clamping piece, and the position of the clamp bolt is aligned with the position of the clamp perforation.
Further, the clamp bolt penetrates through the clamp through hole, a clamp nut is arranged at the end portion of the clamp bolt, and the bottom of the clamp nut is in contact with the outer side of the straight section of the first clamping piece.
Further, the second vertical rod and the inclined vertical rod are welded, and the horizontal web member and the inclined web member are alternately arranged among the first vertical rod, the second vertical rod and the inclined vertical rod.
The installation method of the CAP1400 nuclear island heavy shear wall reinforcement cage module construction supporting device comprises the following steps:
s1, installing an embedded bolt sleeve: when the lower layer of shear wall is constructed, the embedded bolt sleeve is installed at a specified position according to the drawing positioning information, and the outer surface of the embedded bolt sleeve is kept level with the outer edge of the shear wall;
s2, installing a lateral stabilizing support: after the concrete strength of the constructed shear wall reaches the design standard, firstly installing a lateral stable bracket on one side of the wall; when each lateral stabilizing support is installed, firstly, the lateral stabilizing support is hung to a designed position, then four fixing bolts penetrate through fixing bolt installation holes in the lateral stabilizing support and are screwed into the embedded bolt sleeve, then fixing nuts are screwed onto the fixing bolts, and clamping force is applied to the lateral stabilizing support by tightening the fixing nuts;
s3, hoisting the reinforcement cage module: hoisting the reinforcement cage module to a designed position by using a crane, and aligning with a reserved reinforcement on a constructed shear wall so as to ensure the installation precision of the reinforcement cage module;
s4, connecting the reinforcement cage module and the reinforcement clamp: the vertical main rib at the position of the steel bar clamp is finely adjusted to an arc section between a first clamping piece and a second clamping piece, the first clamping piece is installed on the second clamping piece, clamp studs on the second clamping piece penetrate through corresponding clamp perforation holes on the first clamping piece, and threads on the clamp studs are exposed out of the first clamping piece; then screwing the clamp nut on the clamp stud, and applying clamping force to the first clamping piece and the second clamping piece by screwing the clamp nut so as to firmly clamp the vertical main rib; sequentially connecting the reinforcement cage module with the reinforcement clamp according to the method;
s5, installing a lateral stabilizing support on the other side: installing a lateral stabilizing bracket on the other side on the constructed shear wall according to the method in S2;
s6, connecting a reinforcing steel bar clamp of the lateral stabilizing support on the other side with a reinforcing steel bar cage module: after the lateral stabilizing support on the other side is firmly installed on the constructed shear wall, connecting a steel bar clamp on the lateral stabilizing support on the other side with a main steel bar in the steel bar cage module according to the method in S4;
s7, hooking and hooking a crane and installing a steel bar connecting sleeve: after all the connections between the lateral stabilizing support and the constructed shear wall and between the steel bar clamp and the steel bar cage module are completed, the crane can carry out unhooking operation from the steel bar cage module; at the moment, the reinforcement cage module is firmly fixed on the constructed shear wall by the lateral stable support; after unhooking, connecting a main reinforcement of the reinforcement cage module and a reserved reinforcement on the constructed shear wall by adopting a reinforcement connecting sleeve; after the connection of the reinforcing steel bars is completed, the next step of installing the template and pouring concrete can be performed.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, the lateral stable bracket is arranged on the constructed wall body, so that the lateral displacement of the heavy shear wall reinforcement cage module can be limited, and the safety risk of lateral dumping instability damage of the heavy shear wall reinforcement cage module is eliminated; the hoist can be directly unhooked after the steel reinforcement cage module is hoisted in place, so that the problems of long occupied time and poor construction economy of the hoist in the existing steel reinforcement cage modular construction are solved.
2. The lateral stabilizing support is of a steel space truss structure, has high lateral rigidity, is small in deformation under the action of the tilting lateral pressure of the reinforcement cage module, and can meet the requirement of supporting safety.
3. The invention is provided with the fixing bolts, and the single lateral stabilizing support is connected with the constructed shear wall through the fixing bolts, so that the self-weight load of the reinforcement cage module can be borne, and the horizontal thrust and the overturning bending moment generated by the lateral dumping load of the reinforcement cage can be borne.
4. The mounting method can be used for rapidly mounting the lateral traversing bracket, is simple to operate, can ensure the stability in the mounting process, improves the mounting efficiency and ensures the safety of personnel; the lateral stabilizing supports are arranged on two sides of the reinforcement cage module and used for limiting lateral displacement of the reinforcement cage module after the crane is unhooked, so that the risk of toppling instability is eliminated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a schematic diagram of a three-dimensional structure of a construction supporting device of a CAP1400 nuclear island heavy shear wall reinforcement cage module;
FIG. 2 is a view in the direction A of the present invention;
FIG. 3 is an enlarged view of the invention at B;
FIG. 4 is a schematic perspective view of a lateral stabilization stent of the present invention;
FIG. 5 is a schematic view of a planar truss of the present invention in a three-dimensional configuration;
FIG. 6 is an enlarged view of the invention at C;
fig. 7 is a schematic structural view of a reinforcement bar clamp according to the present invention;
fig. 8 is a schematic diagram of the connection of the reinforcement bar clamp and the vertical main bar of the reinforcement cage module according to the present invention;
FIG. 9 is a schematic view of a pre-buried bolt sleeve on a constructed shear wall according to the present invention;
FIG. 10 is a schematic view of the structure of the embedded bolt sleeve, the fixing bolt and the fixing nut of the present invention;
in the figure: 1-a constructed shear wall; 2, reserving reinforcing steel bars on the constructed shear wall; 3-reinforcement cage modules; 31-vertical main ribs; 4-a steel bar connecting sleeve; 5-laterally stabilizing the stent; 51-a rebar clip; 511-a first clip; 512-second clip; 513-clamp studs; 514-clamp nut; 515-clamp stay; 516-clip piercing; 52-plane truss; 521-a first upright; 522-a second upright; 523-inclined upright posts; 524-horizontal web members; 525-diagonal web member; 526-fixing bolt mounting holes; 53-horizontal linkage; 6-embedding a bolt sleeve; 7-fixing bolts; 8-fixing the nut.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "upper", "lower", "left" and "right" in the present invention, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present invention and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1:
the invention is described in detail below by referring to the drawings, and the medium-large diameter connecting pipeline aligning device disclosed in the embodiment, as shown in fig. 1, comprises lateral stabilizing supports 5, wherein the lateral stabilizing supports 5 are arranged at two sides of a reinforcement cage module 3; the lateral stabilizing support 5 comprises a steel bar clamp 51, two plane trusses 52 and horizontal connecting rods 53, wherein the two plane trusses 52 are arranged, the horizontal connecting rods 53 are arranged between the two plane trusses 52, and the steel bar clamp 51 is arranged at the top of the plane trusses 52;
the plane truss 52 includes a first upright 521, a second upright 522, an inclined upright 523, a horizontal web 524, an inclined web 525, and a fixing bolt mounting hole 526; the first upright 521 is positioned at one side close to the reinforcement cage module 3, and the second upright 522 is positioned at one side far from the reinforcement cage module 3; an inclined upright post 523 is arranged at the upper part of the second upright post 522, and a horizontal web member 524 and an inclined web member 525 are arranged among the first upright post 521, the second upright post 522 and the inclined upright post 523.
The fixing bolt mounting holes 526 are formed in the first vertical rod 521 and the second vertical rod 522, and the fixing bolt mounting holes 526 in the first vertical rod 521 and the second vertical rod 522 are aligned; the fixing bolt mounting holes 526 are internally penetrated by fixing bolts 7. The lateral stabilizing support 5 is fixed on the constructed shear wall 1 through the fixing bolts 7, and the fixing bolts 7 penetrate through the fixing bolt mounting holes 526 on the lateral stabilizing support 5 and are screwed into the embedded bolt sleeves 6 on the constructed shear wall 1.
Threads are arranged at two ends of the fixing bolt 7, and threads are not arranged in the middle of the fixing bolt; the screw thread setting length of the fixing bolt 7 arranged at one end of the embedded bolt sleeve 6 is smaller than the screw thread setting length arranged at one end of the lateral stabilizing support 5; the fixing bolt 7 is provided with a fixing nut 8 at one end in the lateral stabilizing support 5. The second upright 522 and the diagonal upright 523 are welded, and the horizontal web member 524 and the diagonal web member 525 are alternately disposed between the first upright 521, the second upright 522 and the diagonal upright 523.
The rebar clip 51 includes a first clip 511, a second clip 512, a clip stud 513, a clip nut 514, a clip brace 515, and a clip aperture 516. The two ends of the first clamping piece 511 and the second clamping piece 512 are flat sections, and the middle part is an arc section; the flat section of the first clamping piece 511 is provided with a clamp perforation 516; the arc section of the second clamping piece 512 is provided with a clamp stay bar 515, and the clamp stay bar 515 is connected with the plane truss 52. A clamp bolt 513 is provided inside the flat section of the second clip 512, and the position of the clamp bolt 513 is aligned with the position of the clamp through hole 516. The clamp bolt 513 passes through the clamp through hole 516, the end of the clamp bolt 513 is provided with a clamp nut 514, and the bottom of the clamp nut 514 is contacted with the outer side of the straight section of the first clamping piece 511.
According to the weight and the size of the reinforcement cage module 3, each side is provided with 1-2 lateral stabilizing supports 5. The lateral stabilizing support 5 is of a steel space truss structure, has high lateral rigidity, is small in deformation under the action of the tilting lateral pressure of the reinforcement cage module 3, and can meet the requirement of supporting safety.
As shown in fig. 4, the lateral stabilization bracket 5 includes: rebar clip 51, planar truss 52 and horizontal link 53. Each lateral stabilizing support 5 comprises 2 planar trusses 52. A plurality of horizontal links 53 are disposed between the two planar trusses 52 to form a space truss structure that eliminates the possibility of out-of-plane instability of a single planar truss. The horizontal connecting rod 53 is a round steel pipe with the diameter of 30-50 mm and the wall thickness of 6-10 mm. The two ends of the horizontal link 53 are respectively connected with the plane truss 52 by welding.
As shown in fig. 5, the planar truss 52 includes: the first pole 521, the second pole 522, the diagonal pole 523, the horizontal web member 524, the diagonal web member 525, and the fixing bolt mounting hole 526. The first upright pole 52, the second upright pole 522 and the inclined upright pole 523 are square steel pipes, and the specifications of the first upright pole 52, the second upright pole 522 and the inclined upright pole 523 are the same: the side length is 80-150 mm, and the wall thickness is 6-10 mm; the horizontal web member 524 and the inclined web member 525 are round steel pipes with the diameter of 30-50 mm and the wall thickness of 6-10 mm. The first upright pole 521 is arranged close to the heavy shear wall reinforcement cage module 3, and the height is 4-6 m; the second upright rod 522 is arranged at one side far away from the heavy shear wall reinforcement cage module 3, and the height is 1-2 m; the inclined upright posts 523 are arranged above the second upright posts 522, and the included angle between the inclined upright posts 523 and the second upright posts 522 is 150-170 degrees, so that the inclined upright posts are arranged on the reinforcement cage module 3. The lower end of the inclined upright post 523 is connected with the upper end of the second upright post 522 by adopting split welding. A plurality of horizontal web members 524 and diagonal web members 525 are arranged among the first upright 521, the second upright 522 and the diagonal upright 523 to improve the in-plane rigidity of the planar truss 52. The horizontal web member 524 is a square steel pipe, and has the same specifications as the first upright 521, the second upright 522, and the diagonal upright 523. The inclined web member 525 is a round steel pipe with the diameter of 30-50 mm and the wall thickness of 6-10 mm. The length of the horizontal web member 524 is 50-80 cm, and two ends of the horizontal web member are respectively welded with the first vertical rod 521, the second vertical rod 522 or the inclined vertical rod 523. The two ends of the diagonal web member 525 are respectively welded with the first vertical rod 521, the second vertical rod 522, the diagonal vertical rod 523 or the horizontal web member 524.
As shown in fig. 5-6, 4 fixing bolt mounting holes 526 are provided in total on each of the planar trusses 52, 2 of which are provided on the first upright 521 and the other two of which are provided on the second upright 522. The first upright 521 is in one-to-one correspondence with the fixing bolt mounting holes 526 of the second upright 522, so as to pass through the fixing bolts 7. The fixing bolt mounting hole 526 has a diameter 1.5 to 2.0mm larger than that of the fixing bolt 7 to ensure that the fixing bolt 7 can smoothly pass through the fixing bolt mounting hole 526.
As shown in fig. 4 and 7, a steel bar clamp 51 is arranged at the top of each single plane truss 52, and the central lines of the two steel bar clamps are coincident, so that eccentric load is not generated. The rebar clip 51 includes: the first clip 511, the second clip 512, the clamp stud 513, the clamp nut 514, the clamp stay 515, and the clamp aperture 516. The thickness of the first clamping piece 511 and the second clamping piece 512 is 10-15 mm, and the width is 5-8 cm; the two ends of the clamping piece are flat sections, the middle part is an arc section, the length of the flat section is 5-8 cm, and the diameter of the arc section is 5cm. Circular clamp perforations 516 are symmetrically formed in straight sections at two ends of the first clamping piece 511, and are used for penetrating through the clamp studs 513 during installation, and the diameter of the circular clamp perforations is 1-1.5 mm larger than that of the clamp studs 513. The two flat sections of the second clamping piece 512 are respectively provided with a clamp stud 513 with the diameter of 10-15 mm, and the center positions of the clamp studs are in one-to-one correspondence with the centers of the clamp through holes 516 on the first clamping piece 511. The clamp studs 513 are welded to the second clip 512. A clamp stay 515 is provided at the rear of the second clip 512 to connect the bar clamp 51 to the planar truss 52. The clamp stay bar 515 is made of solid round steel with the diameter of 20-35 mm, and two ends of the clamp stay bar are respectively welded with the second clamping piece 512 and the first upright pole 521 of the plane truss 52. The length of the clamp stay bar 515 needs to be calculated and determined according to the thickness of the protective layer of the shear wall and the diameter specification of the steel bars in the steel bar cage module 3, and when the first upright pole 521 is tightly attached to the outer edge of the shear wall, the circular arc section of the second clamping piece 512 is tightly attached to the vertical main bar 31 of the steel bar cage module 3. The vertical main rib 31 of the reinforcement cage module 3 is clamped by the reinforcement clamp 51 through the first clamping piece and the second clamping piece, the reinforcement cage module 3 can be firmly connected to the lateral stabilizing support 5, and after the crane is unhooked, the load of the reinforcement cage module 3 can be transferred to the lateral stabilizing support 5 and then transferred to the constructed shear wall 1.
As shown in fig. 7 and 8, when the reinforcement bar clamp 51 is used, the first clamping piece 511 and the second clamping piece 512 clamp the vertical main bar therebetween from two directions, the clamp stud 513 on the second clamping piece 512 passes through the corresponding clamp through hole 516 on the first clamping piece 511, and the threads on the clamp stud 513 are exposed outside the first clamping piece 511. The clamp nut 514 is then screwed onto the clamp stud 513, and a clamping force is applied to the first and second clamping pieces 511 and 512 by tightening the clamp nut 514 to firmly clamp the vertical main bar 31 of the reinforcement cage module 3.
As shown in fig. 1, 2, 9 and 10, a single lateral stabilizing support 5 is secured to the constructed shear wall 1 using 4 fixing bolts 7. The diameter of the fixing bolt 7 is 20-35 mm, and 10.9-level high-strength screw rod materials are adopted. During installation, the fixing bolts 7 penetrate through the fixing bolt installation holes 526 on the lateral stabilizing supports 5 and are screwed into the embedded bolt sleeves 6 embedded in the constructed shear wall 1; thereafter, the fixing nut 8 is screwed onto the fixing bolt 7, and a clamping force is applied to the lateral stabilization bracket 5 by tightening the fixing nut 8, so as to fix the lateral stabilization bracket 5 to the constructed shear wall 1. The embedded bolt sleeve 6 is cylindrical and is made of the same material as the fixed bolt 7; the inner side of the fixing bolt is provided with threads which are matched with the fixing bolt 7. The embedded bolt sleeve 6 is embedded in the lower shear wall in advance, and the outer surface of the embedded bolt sleeve is flush with the outer edge of the shear wall. The single lateral stabilizing support 5 is connected with the constructed shear wall 1 through 4 fixing bolts 7, so that not only can the dead weight load of the reinforcement cage module 3 be borne, but also the horizontal thrust and the overturning bending moment generated by the lateral dumping load of the reinforcement cage module 3 can be borne.
Example 2:
the invention also provides a construction supporting method of the CAP1400 nuclear island heavy shear wall reinforcement cage module, which adopts the reinforcement cage module supporting device during supporting and comprises the following specific steps:
s1, installing an embedded bolt sleeve: and when the lower layer of shear wall is constructed, the embedded bolt sleeve 6 is embedded in a specified position in advance according to the drawing positioning information. The outer surface of the embedded bolt sleeve 6 is kept flush with the outer edge of the shear wall;
s2, installing a lateral stabilizing support: and after the concrete strength of the constructed shear wall 1 reaches the design standard, firstly installing a lateral stabilizing support 5 on one side of the wall. When each lateral stabilizing support 5 is installed, firstly, the lateral stabilizing support 5 is hung to a designed position, then 4 fixing bolts 7 pass through fixing bolt installation holes 526 on the lateral stabilizing support 5 and are screwed into the embedded bolt sleeve 6, then a fixing nut 8 is screwed on the fixing bolts 7, and a clamping force is applied to the lateral stabilizing support 5 by screwing the fixing nut 8;
s3, hoisting the reinforcement cage module: hoisting the reinforcement cage module 3 to a designed position by using a crane, and aligning with the reserved reinforcement 2 on the constructed shear wall so as to ensure the installation precision of the reinforcement cage module 3;
s4, connecting the reinforcement cage module and the reinforcement clamp: the vertical main bar at the position of the reinforcing steel bar clamp 51 is finely adjusted to an arc section between the first clamping piece 511 and the second clamping piece 512, and the clamp studs 513 on the second clamping piece 512 pass through the corresponding clamp through holes 516 on the first clamping piece 511, and the threads on the clamp studs 513 are exposed outside the first clamping piece 511. The clamp nut 514 is then screwed onto the clamp stud 513, and a clamping force is applied to the first and second clamping pieces 511 and 512 by tightening the clamp nut 514 to firmly clamp the vertical main bar. Sequentially connecting the heavy shear wall reinforcement cage module 3 with the reinforcement clamps 51 according to the method;
s5, installing a lateral stabilizing support on the other side: installing a lateral stabilizing support 5 on the other side of the shear wall above the constructed shear wall 1 according to the method in S2;
s6, connecting a reinforcing steel bar clamp of the lateral stabilizing support on the other side with a reinforcing steel bar cage module: after the lateral stabilizing support 5 on one side is firmly installed on the constructed shear wall 1, connecting the steel bar clamp 51 on the lateral stabilizing support 5 on the other side of the shear wall with the main steel bar in the heavy shear wall steel bar cage module 3 according to the method in S4;
s7, hooking and hooking a crane and installing a steel bar connecting sleeve: after all the connections between the lateral stabilizing support 5 and the constructed shear wall 1 and between the reinforcement clamps 51 and the reinforcement cage modules 3 are completed, the crane can carry out unhooking operation from the reinforcement cage modules 3; at this time, the reinforcement cage module 3 is firmly fixed on the constructed shear wall 1 by the lateral stabilizing support 5. After unhooking, the steel bar 2 is reserved between the main steel bar of the steel bar cage module 3 and the constructed shear wall, and is connected by adopting a steel bar connecting sleeve 4. After the connection of the reinforcing steel bars is completed, the next step of installing the template and pouring concrete can be performed.
By adopting the construction supporting device and the construction supporting method for the CAP1400 nuclear island heavy shear wall reinforcement cage module, the lateral displacement of the shear wall reinforcement cage module can be limited by installing the lateral stabilizing bracket on the constructed wall, and the safety risk of the shear wall reinforcement cage module that the shear wall reinforcement cage module is laterally toppled over, unstably and damaged is eliminated; the hoist can be directly unhooked after the steel reinforcement cage module is hoisted in place, so that the problems of long occupied time and poor construction economy of the hoist in the existing steel reinforcement cage modular construction are solved.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (10)
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| CN202310876972.6A CN117211545B (en) | 2023-07-17 | 2023-07-17 | A construction support device and method for a CAP1400 nuclear island heavy shear wall steel cage module |
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| CN202310876972.6A CN117211545B (en) | 2023-07-17 | 2023-07-17 | A construction support device and method for a CAP1400 nuclear island heavy shear wall steel cage module |
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